http://www.openlinksw.com/weblog/public/search.vspx?blogid=127&q=umbel&type=text&output=html
Kingsley Idehen's Blog Data Space
2024-03-29T02:18:41Z
Kingsley Uyi Idehen
kidehen@openlinksw.com
About umbel
16
1
10
http://www.openlinksw.com/dataspace/kidehen@openlinksw.com/weblog/kidehen@openlinksw.com%27s%20BLOG%20%5B127%5D/1343
<p>Typo cleansed edition :-)</p> <h2>Objectives</h2> <ul> <li>Meet <a href="http://community.linkeddata.org/dataspace/organization/lod#this" id="link-id12c52e40">LOD</a> Community Members</li> <li>Participate in Workshop </li> </ul> <h3>Meeting <a href="http://community.linkeddata.org/dataspace/organization/lod#this" id="link-id10456058">LOD</a> Community Members</h3> <p>Although the <a href="http://dbpedia.org/resource/World_Wide_Web">Web</a> continues to shrink the planet by removing the restrictions of geopgrahic location, meeting people face-to-face remains invaluable (*priceless in Mastercard AD speak*). Naturally, meeting and chatting with as many <a href="http://community.linkeddata.org/dataspace/organization/lod#this" id="link-id1382d4f8">LOD</a> community members as possible was high up on my agenda.</p> <h3>Participate in Workshop </h3> <p>As one of the co-chairs of the Linking Open <a href="http://dbpedia.org/resource/Data" id="link-id143a8c30">Data</a> Workshop (<a href="http://events.linkeddata.org/ldow2008/" id="link-id10621d70">LODW</a>), I had a 5 minute workshop opening slot during which I spoke about the following:</p> <h4>Where we are today: </h4> <p>We have <a href="http://dbpedia.org/resource/DBpedia" id="link-id109b40a0">DBpedia</a> as a major hub on the burgeoning <a href="http://dbpedia.org/resource/Linked_Data" id="link-id1074f248">Linked Data</a> <a href="http://dbpedia.org/resource/Giant_Global_Graph" id="link-id101ed948">Web</a>. When OpenLink offered to host <a href="http://dbpedia.org/resource/DBpedia" id="link-id10cd1b20">DBpedia</a> (a combination of <a href="http://virtuoso.openlinksw.com" id="link-id13d19880">Virtuoso</a> DBMS Software and sizable backend Hardware infrastructure), it did so knowing that such an effort would emphatically address the "chicken and egg" conundrum that, prior to this undertaking, stifled the ability to demonstrate practical utility of <a href="http://dbpedia.org/resource/Hypertext_Transfer_Protocol" id="link-id13835980">HTTP</a> based <a href="http://dbpedia.org/resource/Linked_Data" id="link-id14a89c28">Linked Data</a>.<br /> <br /> Today, the <a href="http://dbpedia.org/resource/Linked_Data" id="link-id10aa9fe0">Linked Data</a> bootstrap mission has been accomplished.</p> <h4>Where we go next:</h4> <p>Although <a href="http://dbpedia.org/resource/DBpedia" id="link-id12fe5d98">DBpedia</a> is a hub (ground zero of <a href="http://dbpedia.org/resource/Linked_Data" id="link-id14aca9b8">Linked Data</a>), we have to put it into perspective in relation to a new set of needs and expectations moving forward. Today, <a href="http://dbpedia.org/resource/DBpedia" id="link-id1027f098">DBpedia</a> is a Sun at the heart of a Solar System within the <a href="http://dbpedia.org/resource/Linked_Data" id="link-id14a6adf8">Linked Data</a> Galaxy. But unlike Space as we know it, in <a href="http://dbpedia.org/resource/Cyberspace" id="link-id14a80398">Cyberspace</a> we can have connectivity and collaboration across Solar Systems -- life exists elsewhere and we are part of a collaborative collective unimpeded by constraints of space travel etc. Thus, expect to see the emergence of other Solar Systems accessible to <a href="http://dbpedia.org/resource/DBpedia" id="link-id14904998">DBpedia</a> and its collections of planets (see. <a href="http://community.linkeddata.org/dataspace/organization/lod#this" id="link-id1097d200">LOD</a> <a href="http://richard.cyganiak.de/2007/10/lod/" id="link-id14acecf0">diagram</a>). Examples underway include <a href="http://umbel.org/about/" id="link-idfe92c08">UMBEL</a> which will serve the <a href="http://dbpedia.org/resource/Linked_Data" id="link-id107fac40">Linked Data</a> planets from <a href="http://dbpedia.org/resource/Cyc" id="link-id12fb9e88">OpenCyc</a> (Subject Matter Concepts), <a href="http://www.mpi-inf.mpg.de/~suchanek/downloads/yago/" id="link-id147ea790">Yago</a> (<a href="http://dbpedia.org/resource/Named_entity_recognition" id="link-id14ae83a8">Named Entities</a>), and <a href="http://www.bio2rdf.org/" id="link-id10890640">Bio2RDF</a> (which provides powerful Bio Informatics based <a href="http://dbpedia.org/resource/Linked_Data" id="link-id1439a858">Linked Data</a> planet).</p> <p>I urged the community to veer more aggressively towards developing and demonstrating practical <a href="http://dbpedia.org/resource/Linked_Data" id="link-id11f8e188">Linked Data</a> driven solutions that are aligned to well known problems. Of course, I encouraged all presenters to make this an integral part of their presentations :-) </p> <h4>Workshop Summary: </h4> <p>The workshop was well attended and I found all the presentations engaging and full of enthusiasm. </p> <p>As the sessions progressed, it became clear during a number of accompanying Q&A sessions that a new <a href="http://dbpedia.org/resource/Linked_Data" id="link-idff249b0">Linked Data</a> exploitation frontier is emerging. The frontier in question takes the form of a <a href="http://dbpedia.org/resource/Linked_Data" id="link-id10f73b50">Linked Data</a> substrate capable of addressing the taxonomic needs of solutions aimed at automated <a href="http://dbpedia.org/resource/Named_entity_recognition" id="link-id10d16e00">Named Entity Extraction</a>, Disambiguation, Subject matter Concept alignment, transparently integrated with existing Web Content. Thus, we are moving beyond the minting and deployment of of dereferencable URIs and <a href="http://dbpedia.org/resource/Resource_Description_Framework" id="link-id10419210">RDF</a> <a href="http://dbpedia.org/resource/Data" id="link-id151520d0">data</a> sets to automagically associating existing Web Content with <a href="http://dbpedia.org/resource/Named_entity_recognition" id="link-id105573b0">Named Entities</a> (People, Organizations, Places, Events etc..) and Subject matter Concepts (Politics, Music, Sports, and others) while remaining true to the <a href="http://community.linkeddata.org/dataspace/organization/lod#this" id="link-id14579108">Linking Open Data Community</a> creed i.e. ensuring the Named <a href="http://dbpedia.org/resource/Entity" id="link-id147d31e8">Entity</a> and Subject matter Concept URIs are available to user agents or users seeking to produce alternative <a href="http://dbpedia.org/resource/Data" id="link-id14ae41f0">data</a> views (i.e. Mesh-ups).</p> <p>I will get to part 2 of this report once the actual workshop sessions slides go live (*these are different from the <a href="http://events.linkeddata.org/ldow2008/" id="link-id1034eee8">pre-event PDFs links</a>*).</p>
Linked Data Trip Report - Part 1 (Update 2)
2008-04-29T15:07:43Z
2008-04-29T11:07:43.000002-04:00
Kingsley Uyi Idehen
kidehen@openlinksw.com
http://www.openlinksw.com/dataspace/kidehen@openlinksw.com/weblog/kidehen@openlinksw.com%27s%20BLOG%20%5B127%5D/1599
<p> We have just released an Amazon EC2 based public Snapshot of <a href="http://dbpedia.org/resource/DBpedia" id="link-id18e899b8">DBpedia</a> 3.4. Thus, you can now instantiate a personal and/or service specific variant of the DBpedia 3.4 <a href="http://dbpedia.org/resource/Linked_Data" id="link-id168dec90">Linked Data</a> <a href="http://en.wikipedia.org/wiki/Data_Spaces" id="link-id18911268">Space</a>. Basically, you can replicate what we host, within minutes (as opposed to days). In addition, you no longer need to squabble --on an unpredictable basis with others-- for the infrastructure resources behind DBpedia's public instance, when using the <a href="http://dbpedia.org/resource/SPARQL" id="link-id18d5bd78">SPARQL</a> Endpoint, Faceted Search & Find Services, or HTML Browser Pages etc.</p> <h3>How Does It work?</h3> <ol> <li> <a href="http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VirtInstallationEC2" id="link-id115932b8">Instantiate a Virtuoso EC2 AMI</a> (paid variety, which is aggressively priced at $49.99 for setup and $19.99 per month thereafter)</li> <li> <a href="http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VirtAWSDBpedia34S" id="link-id182dc800"> Mount the shared DBpedia 3.4 public snapshot</a> </li> <li> Start Virtuoso Server</li> <li> Start exploiting the DBpedia Linked Data Space.</li> </ol> <h3>What Interfaces are exposed?</h3> <ol> <li> SPARQL Endpoint</li> <li> Linked Data Viewer Pages (as you see in the public DBpedia instance)</li> <li> <a href="http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VirtFacetBrowserInstallConfig" id="link-id117f6e80">Faceted Search & Find UI and Web Services</a> (REST or SOAP)</li> <li> All the inference rules for <a href="http://umbel.org/about/" id="link-id144b84a8">UMBEL</a>, SUMO, YAGO, <a href="http://dbpedia.org/resource/Cyc" id="link-id16b69da8">OpenCYC</a>, and DBpedia-OWL <a href="http://dbpedia.org/resource/Data">data</a> dictionaries</li> <li>Type Correlations Between DBpedia and Freebase</li> </ol> <p>Enjoy!</p>
Personal and/or Service Specific Linked Data Spaces in the Cloud: DBpedia 3.4
2010-02-01T13:58:14Z
2010-02-01T08:58:14-05:00
Kingsley Uyi Idehen
kidehen@openlinksw.com
http://www.openlinksw.com/dataspace/kidehen@openlinksw.com/weblog/kidehen@openlinksw.com%27s%20BLOG%20%5B127%5D/1594
<p>The recent <a href="http://en.wikipedia.org/wiki/Talk:DBpedia" id="link-id1120a260">Wikipedia imbroglio</a> centered around <a href="http://dbpedia.org/resource/DBpedia" id="link-id14a5e588">DBpedia</a> is the fundamental driver for this particular <a href="http://dbpedia.org/resource/Blog" id="link-id113ddc10">blog</a> post. At time of writing this blog post, the <a href="http://en.wikipedia.org/wiki/DBpedia" id="link-id158edec0">DBpedia project definition in Wikipedia</a> remains unsatisfactory due to the following shortcomings:</p> <ol> <li>inaccurate and incomplete definition of the Project's What, Why, Who, Where, When, and How</li> <li>inaccurate reflection of project essence, by skewing focus towards <a href="http://dbpedia.org/resource/Data" id="link-id0x1bc892d0">data</a> extraction and data set dump production, which is at best a quarter of the project.</li> </ol> <p>Here are some insights on DBpedia, from the perspective of someone intimately involved with the other three-quarters of the project.</p> <h3>What is DBpedia?</h3> <p>A live <a href="http://dbpedia.org/resource/World_Wide_Web" id="link-id0x1c0c0cc0">Web</a> accessible RDF model database (Quad Store) derived from Wikipedia content snapshots, taken periodically. The RDF database underlies a <a href="http://dbpedia.org/resource/Linked_Data" id="link-id11ba0ad0">Linked Data</a> <a href="http://en.wikipedia.org/wiki/Data_Spaces" id="link-id1183c978">Space</a> comprised of: HTML (and most recently HTML+<a href="http://dbpedia.org/resource/RDFa" id="link-id602eab8">RDFa</a>) based data browser pages and a <a href="http://dbpedia.org/resource/SPARQL" id="link-id11af5400">SPARQL</a> endpoint.</p> <p>Note: <a href="http://blog.dbpedia.org/2009/11/11/dbpedia-34-released/" id="link-id110b8248">DBpedia 3.4</a> now exists in snapshot (warehouse) and <a href="http://dbpedia-live.openlinksw.com/stats/" id="link-id6473258">Live Editions</a> (currently being hot-staged). This post is about the snapshot (warehouse) edition, I'll drop a different post about the DBpedia Live Edition where a new Delta-Engine covers both extraction and database record replacement, in realtime.</p> <h3>When was it Created?</h3> <p>As an idea under the moniker "DBpedia" it was conceptualized in late 2006 by researchers at University of Leipzig (lead by Soren Auer) and Freie University, Berlin (lead by <a href="http://www.wiwiss.fu-berlin.de/en/institute/pwo/bizer/" id="link-id14982c78">Chris Bizer</a>). The first public instance of DBpedia (as described above) was released in February 2007. The official DBpedia coming out party occurred at <a href="http://www2007.org/" id="link-id1497c788">WWW2007</a>, Banff, during the <a href="http://esw.w3.org/topic/SweoIG/TaskForces/CommunityProjects/LinkingOpenData/BanffGathering" id="link-id1448b9e8">inaugural Linked Data gathering</a>, where it showcased the virtues and immense potential of <a href="http://www.w3.org/People/Berners-Lee/card#i" id="link-id152257e0">TimBL</a>'s <a href="http://www.w3.org/DesignIssues/LinkedData.html" id="link-id111759a8">Linked Data meme</a>.</p> <h3>Who's Behind It?</h3> <p> <a href="http://www.openlinksw.com/dataspace/organization/openlink#this" id="link-id110e70f8">OpenLink Software</a> (developers of OpenLink <a href="http://virtuoso.openlinksw.com" id="link-id14462f60">Virtuoso</a> and providers of Web Hosting infrastructure), University of Leipzig, and Freie Univerity, Berlin. In addition, there is a burgeoning community of collaborators and contributors responsible DBpedia based applications, cross-linked data sets, ontologies (<a href="http://dbpedia.org/resource/Cyc" id="link-id11244aa0">OpenCyc</a>, <a href="http://www.ontologyportal.org/" id="link-id110e4a40">SUMO</a>, <a href="http://umbel.org/about/" id="link-id11109e48">UMBEL</a>, and <a href="http://www.mpi-inf.mpg.de/yago-naga/yago/" id="link-id10fb4218">YAGO</a>) and other utilities. Finally, DBpedia wouldn't be possible without the global content contribution and curation efforts of Wikipedians, a point typically overlooked (albeit inadvertently).</p> <h3>How is it Constructed?</h3> <p>The steps are as follows:</p> <ol> <li> RDF data set dump preparation via Wikipedia content extraction and transformation to RDF model data, using the N3 data representation format - Java and <a href="http://dbpedia.org/resource/PHP" id="link-id111c93b8">PHP</a> extraction code produced and maintained by the teams at Leipzig and Berlin </li> <li> Deployment of Linked Data that enables Data browsing and exploration using any HTTP aware user agent (e.g. basic Web Browsers) - handled by OpenLink Virtuoso (handled by Berlin via the Pubby Linked Data Server during the early months of the DBpedia project) </li> <li> SPARQL compliant Quad Store, enabling direct access to database records via SPARQL (Query language, REST or SOAP Web Service, plus a variety of query results serialization formats) - OpenLink Virtuoso since first public release of DBpedia </li> </ol> <p> In a nutshell, there are four distinct and vital components to DBpedia. Thus, DBpedia doesn't exist if all the project offered was a collection of RDF data dumps. Likewise, it doesn't exist if you have a SPARQL compliant Quad Store without loaded data sets, and of course it doesn't exist if you have a fully loaded SPARQL compliant Quad Store is up to the cocktail of challenges presented by live Web accessibility.</p> <h3>Why is it Important?</h3> <p> It remains a live exemplar for any individual or organization seeking to publishing or exploit HTTP based Linked Data on the <a href="http://dbpedia.org/resource/World_Wide_Web" id="link-id118e6388">World Wide Web</a>. Its existence continues to stimulate growth in both density and quality of the burgeoning Web of Linked Data.</p> <h3>How Do I Use it?</h3> <p> In the most basic sense, simply browse the HTML pages en route to discovery erstwhile relationships that exist across <a href="http://dbpedia.org/resource/Named_entity_recognition" id="link-id112def88">named entities</a> and <a href="http://dbpedia.org/resource/Topic" id="link-id1591c5f8">subject matter concepts</a> / headings. Beyond that, simply look at DBpedia as a master lookup table in a Web hosted <a href="http://dbpedia.org/resource/federated_database_system" id="link-id11762618">distributed database</a> setup; enabling you to mesh your local domain specific details with DBpedia records via structured relations (triples or 3-tuples records) comprised of HTTP URIs from both realms e.g., owl:sameAs relations.</p> <h3>What Can I Use it For?</h3> <p> Expanding on the Master-Details point above, you can use its rich <a href="http://dbpedia.org/resource/Uniform_Resource_Identifier" id="link-id1170c000">URI</a> corpus to alleviate tedium associated with activities such as: </p> <ol> <li>List maintenance - e.g., Countries, States, Companies, Units of Measurement, Subject Headings etc.</li> <li>Tagging - as a compliment to existing practices</li> <li>Analytical Research - you're only a LINK (URI) away from erstwhile difficult to attain research data spread across a broad range of topics</li> <li>Closed Vocabulary Construction - rather than commence the futile quest of building your own closed vocabulary, simply leverage Wikipedia's human curated vocabulary as our common base. </li> </ol> <h3>Related</h3> <ul> <li> <a href="http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VirtAWSDBpedia34S" id="link-id14a2e698">Pre-loaded and Pre-configured instances of DBpedia 3.4</a> - via publicly shared <a href="http://aws.amazon.com/ebs/" id="link-id1147fcf0">Amazon Elastic Block Storage</a> Snapshots</li> <li> <a href="http://docs.openlinksw.com/virtuoso/rdfperformancetuning.html#rdfperfgeneraldbpedia" id="link-id149ab528">Virtuoso & DBpedia Tunning Guide</a> </li> <li> <a href="http://dowhatimean.net/2009/11/whats-in-a-name-and-the-linked-data-police" id="link-id110cba10">What's In a Name & The Linked Data Police</a>. </li> </ul>
What is the DBpedia Project? (Updated)
2010-01-31T22:46:10Z
2010-01-31T17:46:10.000002-05:00
Kingsley Uyi Idehen
kidehen@openlinksw.com
http://www.openlinksw.com/dataspace/kidehen@openlinksw.com/weblog/kidehen@openlinksw.com%27s%20BLOG%20%5B127%5D/1592
<p> The recent <a href="http://en.wikipedia.org/wiki/Talk:DBpedia" id="link-id1120a260">Wikipedia imbroglio</a> centered around <a href="http://dbpedia.org/resource/DBpedia" id="link-id14a5e588">DBpedia</a> is the fundamental driver for this particular <a href="http://dbpedia.org/resource/Blog" id="link-id113ddc10">blog</a> post. At time of writing this blog post, the <a href="http://en.wikipedia.org/wiki/DBpedia" id="link-id158edec0">DBpedia project definition in Wikipedia</a> remains unsatisfactory due to the following shortcomings:</p> <ol> <li> inaccurate and incomplete definition of the Project's What, Why, Who, Where, When, and How</li> <li> inaccurate reflection of project essence, by skewing focus towards <a href="http://dbpedia.org/resource/Data">data</a> extraction and data set dump production, which is at best a quarter of the project.</li> </ol> <p> Here are some insights on DBpedia, from the perspective of someone intimately involved with the other three-quarters of the project.</p> <h3> What is DBpedia?</h3> <p> A live <a href="http://dbpedia.org/resource/World_Wide_Web">Web</a> accessible RDF model database (Quad Store) derived from Wikipedia content snapshots, taken periodically. The RDF database underlies a <a href="http://dbpedia.org/resource/Linked_Data" id="link-id11ba0ad0">Linked Data</a> <a href="http://en.wikipedia.org/wiki/Data_Spaces" id="link-id1183c978">Space</a> comprised of: HTML (and most recently HTML+<a href="http://dbpedia.org/resource/RDFa" id="link-id602eab8">RDFa</a>) based data browser pages and a <a href="http://dbpedia.org/resource/SPARQL" id="link-id11af5400">SPARQL</a> endpoint.</p> <p> Note: <a href="http://blog.dbpedia.org/2009/11/11/dbpedia-34-released/" id="link-id110b8248">DBpedia 3.4</a> now exists in snapshot (warehouse) and <a href="http://dbpedia-live.openlinksw.com/stats/" id="link-id6473258">Live Editions</a> (currently being hot-staged). This post is about the snapshot (warehouse) edition, I'll drop a different post about the DBpedia Live Edition where a new Delta-Engine covers both extraction and database record replacement, in realtime.</p> <h3> When was it Created?</h3> <p> As an idea under the moniker "DBpedia" it was conceptualized in late 2006 by researchers at University of Leipzig (lead by Soren Auer) and Freie University, Berlin (lead by <a href="http://www.wiwiss.fu-berlin.de/en/institute/pwo/bizer/" id="link-id14982c78">Chris Bizer</a>). The first public instance of DBpedia (as described above) was released in February 2007. The official DBpedia coming out party occurred at <a href="http://www2007.org/" id="link-id1497c788">WWW2007</a>, Banff, during the <a href="http://esw.w3.org/topic/SweoIG/TaskForces/CommunityProjects/LinkingOpenData/BanffGathering" id="link-id1448b9e8">inaugural Linked Data gathering</a>, where it showcased the virtues and immense potential of <a href="http://www.w3.org/People/Berners-Lee/card#i" id="link-id152257e0">TimBL</a>'s <a href="http://www.w3.org/DesignIssues/LinkedData.html" id="link-id111759a8">Linked Data meme</a>.</p> <h3> Who's Behind It?</h3> <p> <a href="http://www.openlinksw.com/dataspace/organization/openlink#this" id="link-id110e70f8">OpenLink Software</a> (developers of OpenLink <a href="http://virtuoso.openlinksw.com" id="link-id14462f60">Virtuoso</a> and providers of Web Hosting infrastructure), University of Leipzig, and Freie Univerity, Berlin. In addition, there is a burgeoning community of collaborators and contributors responsible DBpedia based applications, cross-linked data sets, ontologies (<a href="http://dbpedia.org/resource/Cyc" id="link-id11244aa0">OpenCyc</a>, <a href="http://www.ontologyportal.org/" id="link-id110e4a40">SUMO</a>, <a href="http://umbel.org/about/" id="link-id11109e48">UMBEL</a>, and <a href="http://www.mpi-inf.mpg.de/yago-naga/yago/" id="link-id10fb4218">YAGO</a>) and other utilities. Finally, DBpedia wouldn't be possible without the global content contribution and curation efforts of Wikipedians, a point typically overlooked (albeit inadvertently).</p> <h3> How is it Constructed?</h3> <p> The steps are as follows:</p> <ol> <li> RDF data set dump preparation via Wikipedia content extraction and transformation to RDF model data, using the N3 data representation format - Java and <a href="http://dbpedia.org/resource/PHP" id="link-id111c93b8">PHP</a> extraction code produced and maintained by the teams at Leipzig and Berlin</li> <li> Deployment of Linked Data that enables Data browsing and exploration using any HTTP aware user agent (e.g. basic Web Browsers) - handled by OpenLink Virtuoso (handled by Berlin via the Pubby Linked Data Server during the early months of the DBpedia project)</li> <li> SPARQL compliant Quad Store, enabling direct access to database records via SPARQL (Query language, REST or SOAP Web Service, plus a variety of query results serialization formats) - OpenLink Virtuoso since first public release of DBpedia</li> </ol> <p> In a nutshell, there are four distinct and vital components to DBpedia. Thus, DBpedia doesn't exist if all the project offered was a collection of RDF data dumps. Likewise, it doesn't exist without a fully populated SPARQL compliant Quad Store. Last but not least, it doesn't exist if you have a fully loaded SPARQL compliant Quad Store isn't up to the cocktail of challenges (query load and complexity) presented by live Web database accessibility.</p> <h3> Why is it Important?</h3> <p> It remains a live exemplar for any individual or organization seeking to publishing or exploit HTTP based Linked Data on the <a href="http://dbpedia.org/resource/World_Wide_Web" id="link-id118e6388">World Wide Web</a>. Its existence continues to stimulate growth in both density and quality of the burgeoning Web of Linked Data.</p> <h3> How Do I Use it?</h3> <p> In the most basic sense, simply browse the HTML based resource decriptor pages en route to discovering erstwhile undiscovered relationships that exist across <a href="http://dbpedia.org/resource/Named_entity_recognition" id="link-id112def88">named entities</a> and <a href="http://dbpedia.org/resource/Topic" id="link-id1591c5f8">subject matter concepts</a> / headings. Beyond that, simply look at DBpedia as a master lookup table in a Web hosted <a href="http://dbpedia.org/resource/federated_database_system" id="link-id11762618">distributed database</a> setup; enabling you to mesh your local domain specific details with DBpedia records via structured relations (triples or 3-tuples records), comprised of HTTP URIs from both realms e.g., via owl:sameAs relations.</p> <h3> What Can I Use it For?</h3> <p> Expanding on the Master-Details point above, you can use its rich <a href="http://dbpedia.org/resource/Uniform_Resource_Identifier" id="link-id1170c000">URI</a> corpus to alleviate tedium associated with activities such as:</p> <ol> <li> List maintenance - e.g., Countries, States, Companies, Units of Measurement, Subject Headings etc.</li> <li> Tagging - as a compliment to existing practices</li> <li> Analytical Research - you're only a LINK (URI) away from erstwhile difficult to attain research data spread across a broad range of topics</li> <li> Closed Vocabulary Construction - rather than commence the futile quest of building your own closed vocabulary, simply leverage Wikipedia's human curated vocabulary as our common base.</li> </ol> <h3> Related</h3> <ul> <li> <a href="http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VirtAWSDBpedia34S" id="link-id14a2e698">Pre-loaded and Pre-configured instances of DBpedia 3.4</a> - via publicly shared <a href="http://aws.amazon.com/ebs/" id="link-id1147fcf0">Amazon Elastic Block Storage</a> Snapshots</li> <li> <a href="http://docs.openlinksw.com/virtuoso/rdfperformancetuning.html#rdfperfgeneraldbpedia" id="link-id149ab528">Virtuoso & DBpedia Tunning Guide</a> </li> <li> <a href="http://dowhatimean.net/2009/11/whats-in-a-name-and-the-linked-data-police" id="link-id110cba10">What's In a Name & The Linked Data Police</a>.</li> </ul>
What is the DBpedia Project? (Updated)
2010-09-15T22:10:51Z
2010-09-15T18:10:51.000002-04:00
Kingsley Uyi Idehen
kidehen@openlinksw.com
http://www.openlinksw.com/dataspace/kidehen@openlinksw.com/weblog/kidehen@openlinksw.com%27s%20BLOG%20%5B127%5D/1589
<p> We have just released an Amazon EC2 based public Snapshot of <a href="http://dbpedia.org/resource/DBpedia" id="link-id18e899b8">DBpedia</a> 3.4. Thus, you can now instantiate a personal and/or service specific variant of the DBpedia 3.4 <a href="http://dbpedia.org/resource/Linked_Data" id="link-id168dec90">Linked Data</a> <a href="http://en.wikipedia.org/wiki/Data_Spaces" id="link-id18911268">Space</a>. Basically, you can replicate what we host, within minutes (as opposed to days). In addition, you no longer need to squabble --on an unpredictable basis with others-- for the infrastructure resources behind DBpedia's public instance, when using the <a href="http://dbpedia.org/resource/SPARQL" id="link-id18d5bd78">SPARQL</a> Endpoint, Faceted Search & Find Services, or HTML Browser Pages etc.</p> <h3>How Does It work?</h3> <ol> <li> <a href="http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VirtInstallationEC2" id="link-id115932b8">Instantiate a Virtuoso EC2 AMI</a> (paid variety, which is aggressively priced at $49.99 for setup and $19.99 per month thereafter)</li> <li> <a href="http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VirtAWSDBpedia34S" id="link-id182dc800"> Mount the shared DBpedia 3.4 public snapshot</a> </li> <li> Start Virtuoso Server</li> <li> Start exploiting the DBpedia Linked Data Space.</li> </ol> <h3>What Interfaces are exposed?</h3> <ol> <li> SPARQL Endpoint</li> <li> Linked Data Viewer Pages (as you see in the public DBpedia instance)</li> <li> <a href="http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VirtFacetBrowserInstallConfig" id="link-id117f6e80">Faceted Search & Find UI and Web Services</a> (REST or SOAP)</li> <li> All the inference rules for <a href="http://umbel.org/about/" id="link-id144b84a8">UMBEL</a>, SUMO, YAGO, <a href="http://dbpedia.org/resource/Cyc" id="link-id16b69da8">OpenCYC</a>, and DBpedia-OWL <a href="http://dbpedia.org/resource/Data">data</a> dictionaries</li> <li>Type Correlations Between DBpedia and Freebase</li> </ol> <p>Enjoy!</p>
Personal and/or Service Specific Linked Data Spaces in the Cloud: DBpedia 3.4
2009-11-16T18:30:20Z
2009-11-16T13:30:20-05:00
Kingsley Uyi Idehen
kidehen@openlinksw.com
http://www.openlinksw.com/dataspace/kidehen@openlinksw.com/weblog/kidehen@openlinksw.com%27s%20BLOG%20%5B127%5D/1517
<p>The first salvo of what we've been hinting about re. server side faceted browsing over Unlimited <a href="http://dbpedia.org/resource/Data">Data</a> within configurable Interactive Time-frames is now available for experimentation at: <a href="http://b3s.openlinksw.com/fct/facet.vsp" id="link-ide41d210">http://b3s.openlinksw.com/fct/facet.vsp</a>.</p> <h3>Simple example / demo:</h3> <p>Enter search pattern: Microsoft</p> <p>You will get the usual result from a full text pattern search i.e., hits and text excerpts with matching patterns in boldface. This first step is akin to throwing your net out to sea while fishing.</p> <p> Now you have your catch, what next? Basically, this is where traditional text search value ends since <a href="http://dbpedia.org/resource/regular_expression" id="link-id113b6840">regex</a> or <a href="http://dbpedia.org/resource/XPath" id="link-id1151c140">xpath</a>/<a href="http://dbpedia.org/resource/XQuery" id="link-id14565db8">xquery</a> offer little when the structure of literal text is the key to filtering or categorization based analysis of real-world entities. Naturally, this is where the value of structured querying of <a href="http://dbpedia.org/resource/Linked_Data" id="link-id11bc8208">linked data</a> starts, as you seek to use <a href="http://dbpedia.org/resource/Entity" id="link-id150e7298">entity</a> descriptions (combination of attribute and relationship properties) to "Find relevant things".</p> <p>Continuing with the demo.</p> <p>Click on "Properties" link within the Navigation section of the browser page which results in a distillation and aggregation of the properties of the entities associated with the search results. Then use the "Next" link to page through the properties until to find the properties that best match what you seek. Note, this particular step is akin to using the properties of the catch (using fishing analogy) for query filtering, with each subsequent property link click narrowing your selection further.</p> <p>Using property based filtering is just one perspective on the data corpus associated with the text search pattern; thus, you can alter perspectives by clicking on the "Class" link so that you can filter you search results by entity type. Of course, in a number of scenarios you would use a combination of entity types and entity properties filters to locate the entities of interest to you. </p> <h3>A Few Notes about this demo instance of <a href="http://virtuoso.openlinksw.com" id="link-id14453088">Virtuoso</a>:</h3> <ul> <li> Lookup Data Size (Local Linked Data Corpus): 2 Billion+ Triples (<a href="http://dbpedia.org/page/Entity-attribute-value_model" id="link-id13447558">entity-attribute-value</a> tuples)</li> <li> This is a *temporary* teaser / precursor to the <a href="http://community.linkeddata.org/dataspace/organization/lod#this" id="link-id14e3bfc8">LOD</a> (Linking Open Data Cloud) variant of our Linked Data driven "Search" & "Find" service; we decided to implement this functionality prior to commissioning a larger and more up to date instance based on the entire LOD Cloud</li> <li> The browser is simply using a <a href="http://virtuoso.openlinksw.com" id="link-id138b5688">Virtuoso</a> PL function that also exists in <a href="http://dbpedia.org/resource/World_Wide_Web">Web</a> Service form for loose binding by 3rd parties that have a UI orientation and focus (our UI is deliberately bare boned).</li> <li>The properties and entity types (classes) links expose formal definitions and dictionary provenance <a href="http://dbpedia.org/resource/Information" id="link-id10ecc8e0">information</a> materialized in an HTML page (of course your browser or any other HTTP user agent can negotiation alternative representations of this descriptive information)</li> <li> <a href="http://umbel.org/about/" id="link-id117b95e0">UMBEL</a> based inference rules are enabled, giving you a live and simple demonstration of the virtues of Linked Data Dictionaries for example: click on the description link of any property or class from the <a href="http://dbpedia.org/resource/Friend_of_a_friend" id="link-id1595dd88">foaf</a> (friend-of-a-friend vocabulary), <a href="http://dbpedia.org/resource/SIOC" id="link-id151315e8">sioc</a> (semantically-interlinked-online-communities ontology), <a href="http://musicontology.com/" id="link-id15b9d6e8">mo</a> (music ontology), <a href="http://bibliontology.com/" id="link-id114257e8">bibo</a> (bibliographic data ontology) namespaces to see how the data between these lower level vocabularies or ontologies are meshed with <a href="http://dbpedia.org/resource/Cyc" id="link-id15b9be80">OpenCyc</a>'s upper level ontology. </li> </ul> <h3>Related</h3> <ul> <li> <a href="http://www.openlinksw.com/dataspace/oerling/weblog/Orri%20Erling%27s%20Blog/1515" id="link-id14694eb8">Faceted Search: Unlimited Data in Interactive Time</a> </li> <li> <a href="http://blogs.usnet.private:8893/Virtuoso Anytime: No Query Is Too Complex (updated)" id="link-id1356c630">Virtuoso Anytime: No Query Is Too Complex</a> </li> </ul>
A Linked Data Web Approach To Semantic "Search" & "Find" (Updated)
2009-01-10T18:55:56Z
2009-01-10T13:55:56.000001-05:00
Kingsley Uyi Idehen
kidehen@openlinksw.com
http://www.openlinksw.com/dataspace/kidehen@openlinksw.com/weblog/kidehen@openlinksw.com%27s%20BLOG%20%5B127%5D/1513
<p>As indicated in posts from Fred Giasson and <a href="http://community.linkeddata.org/dataspace/person/mkbergman#this" id="link-id152486c0">Mike Bergman</a>, the <a href="http://zitgist.com/about/" id="link-id1163fb28">Zitgist</a> incubation effort that contributed to the delivery of vital <a href="http://dbpedia.org/resource/Linked_Data" id="link-id1163ff68">Linked Data</a> <a href="http://dbpedia.org/resource/Giant_Global_Graph" id="link-id112a1338">Web</a> infrastructure components such as <a href="http://www.talkdigger.com/" id="link-id11938fe8">TalkDigger</a> (discourse discovery and participation), <a href="http://www.pingthesemanticweb.com/about/" id="link-id15da46f0">PingTheSemanticWeb</a> (ground-zero <a href="http://dbpedia.org/resource/Data">data</a> source for most <a href="http://dbpedia.org/resource/Semantic_Web" id="link-id15ff68f0">Semantic Web</a> search engines), <a href="http://umbel.org/about/" id="link-id112fddb0">UMBEL</a> (binding layer for Upper and Lower Ontologies amongst other things), <a href="http://musicontology.com" id="link-id157ff9e0">Music Ontology</a> (enabling meaningful description of Music), and <a href="http://bibliontology.com/" id="link-id11459180">Bibliographic Ontology</a> (enabling meaningful description of Bibliographic content), is now ready to continue its business development and technology growth as a going concern known as <a href="http://www.structureddynamics.com/" id="link-id110c3b50">Structured Dynamics</a>.</p> <p>With great joy and pride, I wish Structured Dynamics all the success they deserve. Naturally, the collaborations and close relationship between <a href="http://www.openlinksw.com/dataspace/organization/openlink#this" id="link-id11849528">OpenLink Software</a> and its latest technology partner will continue -- especially as we collectively work towards a more comprehendible and pragmatic Web of Linked Data for developers (across Web 1.0, 2.0, 3.0, and beyond), end-users (<a href="http://dbpedia.org/resource/Information" id="link-id15246af8">information</a>- and <a href="http://dbpedia.org/resource/Knowledge" id="link-id15d27888">knowledge</a>-workers), and entrepreneurs (driven by quality and tangible value contribution).</p> <h3>Related</h3> <ul> <li> <a href="http://fgiasson.com/blog/index.php/2009/01/02/structured-dynamics-for-the-new-year/" id="link-id13bf7fd0">Structured Dynamics for the New Year</a> </li> <li> <a href="http://www.mkbergman.com/?p=468" id="link-id111e9e88">A New Year, a New Beginning and a New Venture</a> </li> </ul>
Linked Data Web Collaborators: Introducing Structured Dynamics
2009-01-03T04:27:26Z
2009-01-02T23:27:26-05:00
Kingsley Uyi Idehen
kidehen@openlinksw.com
http://www.openlinksw.com/dataspace/kidehen@openlinksw.com/weblog/kidehen@openlinksw.com%27s%20BLOG%20%5B127%5D/1486
<p>We are just about done with an end-to-end workflow pattern that enables reconstitution of <a href="http://dbpedia.org/resource/DBpedia" id="link-id112a4aa0">DBpedia</a> 3.2 instances in the Clouds courtesy of <a href="http://virtuoso.openlinksw.com" id="link-id11969f70">Virtuoso</a> and EC2.</p> <p>Basically this is how it works.</p> <ol> <li>Instantiate a Virtuoso EC2 AMI (paid variety)</li> <li>Install the special EC2 extensions (ec2ext_dav.vad) VAD via the Conductor UI or iSQL</li> <li>Restore the Virtuoso+DBpedia backup from our S3 bucket</li> <li>After approx. 1 hr, you will have a complete DBpedia replica in your own <a href="http://en.wikipedia.org/wiki/Data_Spaces" id="link-id1169c358">data space</a> on the <a href="http://dbpedia.org/resource/Linked_Data" id="link-id10fd39a8">Linked Data</a> <a href="http://dbpedia.org/resource/Giant_Global_Graph" id="link-id141d0c80">Web</a>.</li> </ol> <p>DBpedia replica implies:</p> <ol> <li> <a href="http://dbpedia.org/resource/SPARQL" id="link-id116dfd78">SPARQL</a> Endpoint</li> <li>Linked Data Viewer Pages (as you see in the public DBpedia instance)</li> <li>All requisite re-write rules for <a href="http://dbpedia.org/resource/Uniform_Resource_Identifier" id="link-id114ab148">URI</a> de-referencing and attribution (i.e., low cost triples that links back to main DBpedia using terms from our little Attribution Ontology) </li> <li>All the inference rules for <a href="http://umbel.org/about/" id="link-id112d4860">UMBEL</a>, YAGO, <a href="http://dbpedia.org/resource/Cyc" id="link-id14612e80">OpenCYC</a>, and DBpedia-OWL data dictionaries </li> <li>All Full Text Indexes</li> <li>All Bitmap Indexes.</li> </ol> <p>Tomorrow is the official go live day (due to last minute price changes), but you can instantiate a paid <a href="https://aws-portal.amazon.com/gp/aws/user/subscription/index.html?ie=UTF8&offeringCode=6CB89F71" id="link-id115da1a8">Virtuoso AMI</a> starting now :-)</p> <p>To be continued...</p>
Your Personal Edition of DBpedia in the Clouds
2008-11-25T23:55:55Z
2008-11-25T18:55:55-05:00
Kingsley Uyi Idehen
kidehen@openlinksw.com
http://www.openlinksw.com/dataspace/kidehen@openlinksw.com/weblog/kidehen@openlinksw.com%27s%20BLOG%20%5B127%5D/1455
<p> The evolution of the <a href="http://dbpedia.org/resource/World_Wide_Web">Web</a> into a <a href="http://dbpedia.org/resource/federated_database_system" id="link-id13d825f8">federated database</a>, <a href="http://dbpedia.org/resource/Information" id="link-id11821e18">information</a> space, and <a href="http://dbpedia.org/resource/Knowledge" id="link-id147f5d20">knowledge</a>-base hybrid continues at frenetic pace.</p> <p> As more <a href="http://dbpedia.org/resource/Linked_Data" id="link-id14a805a8">Linked Data</a> is injected into the Web from the <a href="http://community.linkeddata.org/dataspace/organization/lod#this" id="link-id114ebeb8">Linking Open Data community</a> and other initiatives, it's important to note that "Linked Data" is available in a variety of forms such as:</p> <ul> <li> <a href="http://dbpedia.org/resource/Data">Data</a> Model Definition oriented Linked Data (aka. Data Dictionary)</li> <li> Data Model Instance Data (aka. Instance Data)</li> <li> Linked Data oriented solutions that leverage the smart data substrate that Models and Instance Data meshes deliver.</li> </ul> <p> Note: The common glue across the different types of Linked Data remains the commitment to data object (<a href="http://dbpedia.org/resource/Entity" id="link-id1103afe8">entity</a>) identification and access via de-referencable URIs (aka. record / entity level data source names).</p> <p> As stated in my recent post titled: <a href="http://dbpedia.org/resource/Semantic_Web" id="link-id11743278">Semantic Web</a>: <a href="http://www.openlinksw.com/dataspace/kidehen@openlinksw.com/weblog/kidehen@openlinksw.com%27s%20BLOG%20%5B127%5D/1444" id="link-id10f44ce0">Travails to Harmony Illustrated</a>. Harmonious intersections of instance data, data dictionaries (schemas, ontologies, rules etc.) provide a powerful substrate (smart data) for the development and deployment of "People" and/or "Machine" oriented solutions. Of course, others have commented on these matters and expressed similar views (see related section below).</p> <p> The clickable venn diagram below, provides a simple exploration path that exposes the linkage that already exists, across the different Linked Data types, within the burgeoning <a href="http://dbpedia.org/resource/Giant_Global_Graph" id="link-id1132fe60">Linked Data Web</a>.</p> <div> <map name="LiveCloud"> <area coords="356,136,120" href="http://umbel.org/images/lod_constellation.html" shape="circle" /> <area coords="140,136,120" href="http://www4.wiwiss.fu-berlin.de/bizer/pub/lod-datasets_2008-09-18.html" shape="circle" /> <area coords="248,280,120" href="http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/ClickableVirtSpongerCloud" shape="circle" /> </map> <img border="0" src="http://virtuoso.openlinksw.com/ldp_presentation/images/linked_data_people_schems_venn.png" usemap="#LiveCloud" /> </div> <h3> Related</h3> <ul> <li> <a href="http://jhingran.typepad.com/" id="link-id14aeb438">Anant Jingran</a>'s insightful <a href="http://intranet.usnet.private:8893/anant_jhingrans_musings/2008/08/future-of-database-research-is-excellent-but-what-is-the-future-of-data.html" id="link-id1158ca98">LDP Conference Trip report</a> </li> <li> Anant's recent post about the <a href="http://jhingran.typepad.com/anant_jhingrans_musings/2008/08/future-of-database-research-is-excellent-but-what-is-the-future-of-data.html" id="link-id1128fd78">future of Data</a> </li> <li> <a href="http://www.mkbergman.com/me/" id="link-id1114d330">Mike Bergman</a> - <a href="http://www.mkbergman.com/457/a-new-constellation-in-the-linking-open-data-lod-sky/" id="link-id114780f8">A New Constellation in the Linking Open Data (LOD) Sky</a> </li> <li> <a href="http://fgiasson.com/me/" id="link-id14aedaf0">Frederick Giasson</a> - <a href="http://fgiasson.com/blog/index.php/2008/09/04/exploding-dbpedias-domain-using-umbel" id="link-id12daa6d0">Exploding DBpedia Domain using UMBEL</a> </li> </ul>
State of the Linked Data Web
2010-03-28T22:25:19Z
2010-03-28T18:25:19-04:00
Kingsley Uyi Idehen
kidehen@openlinksw.com
http://www.openlinksw.com/dataspace/kidehen@openlinksw.com/weblog/kidehen@openlinksw.com%27s%20BLOG%20%5B127%5D/1454
<p>Now that the virtues of dynamic generation of RDF based <a href="http://dbpedia.org/resource/Linked_Data" id="link-id14c429a0">Linked Data</a> are becoming clearer, I guess it's time to unveil the <a href="http://virtuoso.openlinksw.com" id="link-id13d7c7e0">Virtuoso</a> <a href="http://virtuoso.openlinksw.com/Whitepapers/html/VirtSpongerWhitePaper.html" id="link-id115d0c20">Sponger</a> driven Dynamic Linked Data constellation diagram.</p> <p>Our diagram depicts the myriad of <a href="http://dbpedia.org/resource/Data">data</a> sources from which RDF Linked Data is generated "on the fly" via our data source specific RDF-zation cartridges/drivers. It also unveils how the sponger leverages the Linked Data constellations of <a href="http://umbel.org/" id="link-id14bd5700">UMBEL</a>, <a href="http://dbpedia.org/resource/DBpedia" id="link-id110f5a48">DBpedia</a>, <a href="http://www.bio2rdf.org/" id="link-id11494bc0">Bio2Rdf</a>, and others for lookups.</p> <map name="GraffleExport"> <area shape="circle" coords="723,292,36" href="http://linkeddata.uriburner.com/about/html/http://xbel.sourceforge.net/bookmarks/xbel.xbel" /> <area shape="circle" coords="423,309,36" href="http://linkeddata.uriburner.com/about/html/http://www.w3.org/2001/sw/grddl-wg/doc29/hotel-data.html" /> <area shape="circle" coords="592,285,36" href="http://linkeddata.uriburner.com/about/html/http://farm4.static.flickr.com/3067/2590298570_304a594899_t.jpg" /> <area shape="circle" coords="685,220,36" href="http://linkeddata.uriburner.com/about/html/http://microformats.org/feed/" /> <area shape="circle" coords="817,182,36" 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Dynamic Linked Data Constellation
2008-10-17T14:45:53Z
2008-10-17T10:45:53.000004-04:00
Kingsley Uyi Idehen
kidehen@openlinksw.com
http://www.openlinksw.com/dataspace/kidehen@openlinksw.com/weblog/kidehen@openlinksw.com%27s%20BLOG%20%5B127%5D/1453
<p>RDF-ization is a term used by the <a href="http://dbpedia.org/resource/Semantic_Web" id="link-id14b4ebd0">Semantic Web</a> community to describe the process of generating RDF from non RDF <a href="http://dbpedia.org/resource/Data">Data</a> Sources such as (X)HTML, Weblogs, Shared Bookmark Collections, Photo Galleries, Calendars, Contact Managers, Feed Subscriptions, Wikis, and other <a href="http://dbpedia.org/resource/Information" id="link-id13f2a2e0">information</a> resource collections. </p> <p>If the RDF generated, results in an <a href="http://dbpedia.org/resource/Entity" id="link-id11281278">entity</a>-to-entity level network (graph) in which each entity is endowed with a de-referencable HTTP based ID (a <a href="http://dbpedia.org/resource/Uniform_Resource_Identifier" id="link-id148200f0">URI</a>), we end up with an enhancement to the <a href="http://dbpedia.org/resource/World_Wide_Web">Web</a> that adds <a href="http://dbpedia.org/resource/Linked_Data" id="link-id112a5980">Hyperdata</a> linking across extracted entities, to the existing Hypertext based Web of linked documents (pages, images, and other information resource types). Thus, I can use the same <a href="http://dbpedia.org/resource/Uniform_Resource_Locator" id="link-id10ebc630">URL</a> linking mechanism to reference a broader range of "Things" i.e., documents, things that documents are about, or things loosely associated with documents.</p> <p>The <a href="http://virtuoso.openlinksw.com" id="link-id144304a8">Virtuoso</a> <a href="http://virtuoso.openlinksw.com/Whitepapers/html/VirtSpongerWhitePaper.html" id="link-id14a96400">Sponger</a> is an example of an <a href="http://www.openlinksw.com/weblog/public/search.vspx?blogid=127&q=rdf%20middleware&type=text&output=html" id="link-id14d36938">RDF Middleware</a> solution from <a href="http://www.openlinksw.com/dataspace/organization/openlink#this" id="link-id117e5c50">OpenLink Software</a>. It's an in-built component of the Virtuoso <a href="http://dbpedia.org/resource/Virtuoso_Universal_Server" id="link-id14b4d0e0">Universal Server</a>, and deployable in many forms e.g., Software as Service (SaaS) or traditional software installation. It delivers RDF-ization services via a collection of Web information resource specific Cartridges/Providers/Drivers covering Wikipedia, Freebase, CrunchBase, WikiCompany, OpenLibrary, Digg, eBay, Amazon, RSS/Atom/OPML feed sources, XBRL, and many more.</p> <p>RDF-ization alone doesn't ensure valuable RDF based <a href="http://dbpedia.org/resource/Linked_Data" id="link-id14a75b48">Linked Data</a> on the Web. The process of producing RDF Linked Data is ultimately about the art of effectively describing resources with an eye for <a href="http://dbpedia.org/resource/Context_%28language_use%29" id="link-id1442fea0">context</a>. </p> <h3>RDF-ization Processing Steps</h3> <ol> <li> Entity Extraction</li> <li> Vocabulary/Schema/Ontology (Data Dictionary) mapping</li> <li> HTTP based Proxy URI generation</li> <li>Linked Data Cloud Lookups (e.g., perform <a href="http://umbel.org/about/" id="link-id14432f00">UMBEL</a> lookup to add "isAbout" fidelity to graph and then lookup <a href="http://dbpedia.org/resource/DBpedia" id="link-id14485f40">DBpedia</a> and other <a href="http://community.linkeddata.org/dataspace/organization/lod#this" id="link-id115ea410">LOD</a> instance data enclaves for Identical individuals and connect via "owl:sameAs")</li> <li> RDF <a href="http://dbpedia.org/resource/Resource_Description_Framework" id="link-id14ae31c0">Linked Data Graph</a> projection that uses the description of the container information resource to expose the URIs of the distilled entities.</li> </ol> <p>The animation that follows illustrates the process (5,000 feet view), from grabbing resources via HTTP GET, to injecting RDF Linked Data back into the Web cloud:</p> <div> <object> <embed src="http://virtuoso.openlinksw.com/screencasts/virtuoso-rdf-middleware.swf" type="application/x-shockwave-flash" width="800" height="600"></embed> </object> </div> <p>Note: the Shredder is a Generic Cartridge, so you would have one of these per data source type (information resource type).</p>
What is Linked Data oriented RDF-ization?
2008-10-07T21:35:24Z
2008-10-07T17:35:24-04:00
Kingsley Uyi Idehen
kidehen@openlinksw.com
http://www.openlinksw.com/dataspace/kidehen@openlinksw.com/weblog/kidehen@openlinksw.com%27s%20BLOG%20%5B127%5D/1447
<p> In response to the "<a href="http://dbpedia.org/resource/Semantic_Web" id="link-id15971040">Semantic Web</a> Technology" application classification scheme espoused by <a href="http://www.readwriteweb.com" id="link-id16391540">ReadWriteWeb</a> (RWW), emphasized in the post titled: <a href="http://www.readwriteweb.com/archives/rdf_semantic_web_apps.php" id="link-id1157eaa0">Where are all the RDF-based Semantic Web Apps?</a>, here is my attempt to clarify and reintroduce what <a href="http://www.openlinksw.com/dataspace/organization/openlink#this" id="link-id15a43758">OpenLink Software</a> offers (today) in relation to Semantic Web technology. </p> <p> From the RWW Top-Down category, which I interpret as: technologies that produce RDF from non RDF <a href="http://dbpedia.org/resource/Data">data</a> sources. Our product portfolio is comprised of the following; <a href="http://virtuoso.openlinksw.com" id="link-id14f05818">Virtuoso Universal Server</a>, <a href="http://dbpedia.org/resource/OpenLink_Data_Spaces" id="link-id162c8630">OpenLink Data Spaces</a>, <a href="http://oat.openlinksw.com" id="link-id134e1a00">OpenLink Ajax Toolkit</a>, and <a href="http://ode.openlinksw.com" id="link-id160b3bf8">OpenLink Data Explorer</a> (which includes ubiquity commands).</p> <h3>Virtuoso Universal Server functionality summary:</h3> <ol> <li>Generation of RDF <a href="http://dbpedia.org/resource/Linked_Data" id="link-id161d5f50">Linked Data</a> Views of <a href="http://dbpedia.org/resource/SQL" id="link-id161d5978">SQL</a>, XML, and <a href="http://dbpedia.org/resource/World_Wide_Web">Web</a> Services in general </li> <li>Deployment of RDF Linked Data </li> <li>"On the Fly" generation of RDF Linked Data from Document Web <a href="http://www.w3.org/TR/webarch/" id="link-id178bbc08">information resources</a> (i.e. distillation of entities from their containers e.g. Web pages) via Cartridges / Drivers</li> <li> <a href="http://dbpedia.org/resource/SPARQL" id="link-id162c2118">SPARQL</a> query language support </li> <li>SPARQL extensions that bring SPARQL closer to SQL e.g Aggregates, Update, Insert, Delete Named Graph support (i.e. use of logical names to partition RDF data within Virtuoso's multi-model dbms engine) </li> <li>Inference Engine (currently in use re. <a href="http://dbpedia.org/resource/DBpedia" id="link-id14f563c0">DBpedia</a> via Yago and <a href="http://umbel.org/about/" id="link-id113273b8">UMBEL</a>)</li> <li>Host and exposes data from <a href="http://dbpedia.org/resource/Drupal" id="link-id123d3bd8">Drupal</a>, <a href="http://dbpedia.org/resource/WordPress" id="link-id141adf40">Wordpress</a>, <a href="http://dbpedia.org/resource/MediaWiki" id="link-id1604b450">MediaWiki</a>, <a href="http://dbpedia.org/resource/PhpBB" id="link-id141013a8">phpBB3</a> as RDF Linked Data via in-built support for <a href="http://dbpedia.org/resource/PHP" id="link-id14661e58">PHP</a> runtime</li> <li> <a href="http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/ODSInstallationEC2" id="link-id146c84d0">Available as an EC2 AMI</a> </li> <li>etc..</li> </ol> <h3>OpenLink Data Spaces functionality summary:</h3> <ol> <li>Simple mechanism for Linked Data <a href="http://dbpedia.org/resource/Giant_Global_Graph" id="link-id15473770">Web</a> enabling yourself by giving you an <a href="http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/GetAPersonalURIIn5MinutesOrLess" id="link-id15f6d278">HTTP based User ID</a> (a de-referencable <a href="http://dbpedia.org/resource/Uniform_Resource_Identifier" id="link-id15aaeb68">URI</a>) that is linked to a <a href="http://myopenlink.net/dataspace/person/kidehen" id="link-id15a7a840">FOAF based Profile page</a> and OpenID</li> <li>Binds all your data sources (blogs, wikis, bookmarks, photos, calendar items etc. ) to your URI so can "Find" things by only remembering your URI</li> <li>Makes your profile page and personal URI the focal point of Linked Data Web presence</li> <li>Delivers Data Portability (using data access by value or <a href="http://dbpedia.org/resource/Reference_(computer_science)" id="link-id16212838">data access by reference</a>) across data silos (e.g. Web 2.0 style social networks)</li> <li>Allows you make annotations about anything in your own <a href="http://en.wikipedia.org/wiki/Data_Spaces" id="link-id14668010">Data Space</a>(s) on the Web without exposure to RDF markup</li> <li>A Briefcase feature that provides a WebDAV driven RDF Linked Data variant of functionality seen in Mac OS X Spotlight and WinFS with the addition of SPARQL compliance</li> <li>Automatically generates <a href="http://dbpedia.org/resource/RDFa" id="link-id14691440">RDFa</a> in its (X)HTML pages</li> <li> <a href="http://dbpedia.org/resource/Blog" id="link-id14fae7b8">Blog</a>, Wiki, WebDAV File Server, Shared Bookmarks, Calendar, and other applications that look and feel like Web 2.0 counterparts but emitt RDF Linked Data amongst a plethora of data exchange formats</li> <li>Available as an EC2 AMI</li> <li>etc..</li> </ol> <h3>OpenLink Ajax Toolkit functionality summary:</h3> <ol> <li>Provides binding to SQL, RDF, XML, and Web Services via Ajax Database Connectivity Layer (you only need an <a href="http://dbpedia.org/resource/Open_Database_Connectivity" id="link-id11550548">ODBC</a>, <a href="http://dbpedia.org/resource/Java_Database_Connectivity" id="link-id13ae5f68">JDBC</a>, OLE-DB, <a href="http://dbpedia.org/resource/ADO.NET" id="link-id162803e8">ADO</a>.NET, XMLA Driver, or Web Service on the backend for dynamic data access from Javascript)</li> <li>All controls are Ajax Database Connectivity bound (widgets get their data from Ajax Database Connectivity data sources)</li> <li>Bundled with Virtuoso and <a href="http://dbpedia.org/resource/OpenLink_Data_Spaces" id="link-id161dfe90">ODS</a> installations.</li> <li>etc.</li> </ol> <h3>OpenLink Data Explorer functionality summary</h3> <ol> <li>Distills entities associated with information resource style containers (e.g. Web Pages or files) as RDF Linked Data</li> <li>Exposes the RDF based <a href="http://dbpedia.org/resource/Resource_Description_Framework" id="link-id12a42ed8">Linked Data graph</a> associated with information resources (see the Linked Data behind Web pages)</li> <li>Ubiquity commands for invoking the above</li> <li>Available as a <a href="http://linkeddata.uriburner.com/ode" id="link-id15a0d2b0">Hosted Service</a> or <a href="http://ode.openlinksw.com" id="link-id138b9fa8">Firefox Extension</a> </li> <li>Bundled with Virtuoso and ODS installations</li> <li>etc.</li> </ol> <h3>Note:</h3> <p>Of course you could have simply looked up <a href="http://www.openlinksw.com/dataspace/organization/openlink" id="link-id14ef2c10">OpenLink Software's FOAF based Profile page</a> (*note the Linked Data Explorer tab*), or simply passed the <a href="http://dbpedia.org/resource/Friend_of_a_friend" id="link-id14cbf5c8">FOAF</a> profile page <a href="http://dbpedia.org/resource/Uniform_Resource_Locator" id="link-id16453e28">URL</a> to a Linked Data aware client application such as: <a href="http://linkeddata.uriburner.com/ode" id="link-id15a80500">OpenLink Data Explorer</a>, <a href="http://zitgist.com/about/" id="link-id1586a360">Zitgist</a> <a href="http://dataviewer.zitgist.com" id="link-id16249f60">Data Viewer</a>, <a href="http://beckr.org/marbles" id="link-id15993fb0">Marbles</a>, and <a href="http://dig.csail.mit.edu/2005/ajar/release/tabulator/0.8/tab.html" id="link-id14d63048">Tabulator</a>, and obtained information. Remember, <a href="http://www.openlinksw.com/dataspace/organization/openlink#this" id="link-id138ba838">OpenLink Software</a> is an <a href="http://dbpedia.org/resource/Entity" id="link-id1173e120">Entity</a> of Type: <a href="http://xmlns.com/foaf/0.1/Organization" id="link-id138b87b8">foaf:Organization</a>, on the burgeoning Linked Data Web :-)</p> <h3>Related</h3> <ul> <li> <a href="http://virtuoso.openlinksw.com/presentations/Creating_Deploying_Exploiting_Linked_Data2/Creating_Deploying_Exploiting_Linked_Data2_TimBL_v3.html" id="link-id163a0c88">Linked Data Planet Keynote</a> (RDFa based remix edition)</li> <li> <a href="http://semanticbusiness.blogspot.com/2008/09/report-on-cusp-global-review-of.html" id="link-id11471a40">On The Cusp: A Global Review of the Semantic Web Industry.</a> </li> </ul>
Where Are All the RDF-based Semantic Web Applications?
2008-10-02T19:27:41Z
2008-10-02T15:27:41-04:00
Kingsley Uyi Idehen
kidehen@openlinksw.com
http://www.openlinksw.com/dataspace/kidehen@openlinksw.com/weblog/kidehen@openlinksw.com%27s%20BLOG%20%5B127%5D/1427
<p>Here are some demonstrations of (X)HTML based representations of resource descriptions from <a href="http://www.freebase.com" id="link-id12275470">Freebase</a>, <a href="http://dbpedia.org/resource/DBpedia" id="link-id168abcc0">DBpedia</a>, <a href="http://www.bbc.co.uk/music/artists" id="link-id107c75c8">BBC Music Beta</a>, <a href="http://crunchbase.com" id="link-id1322e9a0">CrunchBase</a>, <a href="http://sw.opencyc.org" id="link-id16e09ea8">OpenCyc</a>, and <a href="http://umbel.org/about/" id="link-id188687c0">UMBEL</a> etc. What is really being demonstrated here is the use of Proxy / Wrapper URIs to expose powerful links across entities distilled from their container documents (or <a href="http://dbpedia.org/resource/Information" id="link-id13e117b0">information</a> resources). Of course, you see exactly the same technique in action whenever you visit <a href="http://dbpedia.org/resource/DBpedia" id="link-id10afe178">DBpedia</a> pages. Again, we are moving the concept of Linking from the document to document level, down to the document-<a href="http://dbpedia.org/resource/Entity" id="link-id16032730">entity</a> to document-<a href="http://dbpedia.org/resource/Entity" id="link-id13eef3d8">entity</a> level. The evolution of network link focal points is illustrated in slides <a href="http://virtuoso.openlinksw.com/presentations/Creating_Deploying_Exploiting_Linked_Data2/Creating_Deploying_Exploiting_Linked_Data2_TimBL_v3.html#(15)" id="link-id183523a8">15</a> to <a href="http://virtuoso.openlinksw.com/presentations/Creating_Deploying_Exploiting_Linked_Data2/Creating_Deploying_Exploiting_Linked_Data2_TimBL_v3.html#(22)" id="link-id18270200">22</a> of my <a href="http://virtuoso.openlinksw.com/presentations/Creating_Deploying_Exploiting_Linked_Data2/Creating_Deploying_Exploiting_Linked_Data2_TimBL_v3.html" id="link-id16f0a7c8">Linked Data Planet presentation</a> remix.</p> <h3>Live Examples</h3> <ol> <li> <a href="http://demo.openlinksw.com/proxy/html/http://www.freebase.com/view/en/abraham_lincoln" id="link-id11cf00b8">Abraham Lincoln</a> - Freebase (note: link from Freebase to <a href="http://dbpedia.org/resource/DBpedia" id="link-id17db1620">DBpedia</a> via Wikipedia)</li> <li> <a href="http://demo.openlinksw.com/proxy/html/http://www.crunchbase.com/company/amazon" id="link-id171d9930">Amazon</a> - CrunchBase (note: links from CruncBase to <a href="http://dbpedia.org/resource/DBpedia" id="link-id0x1ed41510">DBpedia</a>)</li> <li> <a href="http://demo.openlinksw.com/proxy/html/http://www.bbc.co.uk/music/artists/cc197bad-dc9c-440d-a5b5-d52ba2e14234" id="link-id10a01dc0">Cold Play</a> - <a href="http://dbpedia.org/resource/BBC" id="link-id12fa5648">BBC</a> Music Beta (note: links to <a href="http://musicbrainz.org/" id="link-id126f71c8">Musicbrainz</a>)</li> <li> <a href="http://demo.openlinksw.com/proxy/html/http://virtuoso.openlinksw.com/presentations/Creating_Deploying_Exploiting_Linked_Data2/Creating_Deploying_Exploiting_Linked_Data2_TimBL_v3.html" id="link-id1732e820">Linked Data Planet Presentation</a> - Also a Slidy, Bibo Ontology, and <a href="http://dbpedia.org/resource/RDFa" id="link-id104869a8">RDFa</a> usage example</li> <li> <a href="http://demo.openlinksw.com/proxy/html/http://sw.opencyc.org/2008/06/10/concept/en/Music" id="link-id1699d628">Music</a> - <a href="http://dbpedia.org/resource/Cyc" id="link-id126c74f0">OpenCyc</a> Concept which exposes a <a href="http://dbpedia.org/resource/Linked_Data" id="link-id15687380">Hyperdata</a> link to its equivalent <a href="http://demo.openlinksw.com/proxy/html/http://umbel.org/ns/sc/Music" id="link-id13ebbac0">UMBEL Subject Concept</a> and back</li> </ol> <h4> <a href="http://virtuoso.openlinksw.com" id="link-id10537a28">Virtuoso</a>'s RDFization Middleware & <a href="http://dbpedia.org/resource/Linked_Data" id="link-id10869440">Linked Data</a> Deployment Architecture Diagram</h4> <div> <table border="1"> <tr> <td><br /> <br /> <img src="http://virtuoso.openlinksw.com/ldp_presentation/images/linked_data_gen_opts3.png" /> <br /> <br /> </td> </tr> </table> </div> <p>Note: You can substitute my examples using any <a href="http://dbpedia.org/resource/World_Wide_Web">Web</a> resource <a href="http://dbpedia.org/resource/Uniform_Resource_Locator" id="link-id105a3e20">URL</a>. The underlying RDFization and <a href="http://dbpedia.org/resource/Linked_Data" id="link-id18155cd0">Linked Data</a> deployment functionality of the <a href="http://virtuoso.openlinksw.com" id="link-id13f56ed0">Virtuoso</a> demo instance takes care of everything else. Also note that the HTML based resource description page capability is now deployed as part of the <a href="http://virtuoso.openlinksw.com" id="link-id17db1128">Virtuoso</a> <a href="http://virtuoso.openlinksw.com/Whitepapers/html/VirtSpongerWhitePaper.html" id="link-id100a7630">Sponger</a> component of every <a href="http://virtuoso.openlinksw.com" id="link-id109eed20">Virtuoso</a> installation starting with from version <a href="http://sourceforge.net/project/shownotes.php?group_id=161622&release_id=622380" id="link-id1441f530">5.0.8.</a> </p>
Connecting Freebase, Wikipedia, DBpedia, and other Linked Data Spaces (Update 1)
2008-08-29T18:57:02Z
2008-08-29T14:57:02.000001-04:00
Kingsley Uyi Idehen
kidehen@openlinksw.com
http://www.openlinksw.com/dataspace/kidehen@openlinksw.com/weblog/kidehen@openlinksw.com%27s%20BLOG%20%5B127%5D/1372
<p> The current live instance of <a href="http://dbpedia.org/resource/DBpedia" id="link-id107c7b60">DBpedia</a> has just received dose #1 of a series of planned "<a href="http://dbpedia.org/resource/Context_%28language_use%29" id="link-id10d3ec78">Context</a>" oriented booster shots. These shots seek to to protect <a href="http://dbpedia.org/resource/DBpedia" id="link-id143648f0">DBpedia</a> from contextual incoherence as it grows in <a href="http://dbpedia.org/resource/Data">data</a> set expanse and popularity. Dose #1 (vaccine label: <a href="http://www.mpi-inf.mpg.de/~suchanek/downloads/yago/" id="link-id16d497d0">Yago</a>) equips <a href="http://dbpedia.org/resource/DBpedia" id="link-id13f90120">DBpedia</a> with a functional (albeit non exclusive) Data Dictionary component courtesy of the <a href="http://www.mpi-inf.mpg.de/~suchanek/downloads/yago/" id="link-id10509a08">Yago</a> Class Hierarchy .</p> <p> When the <a href="http://dbpedia.org/resource/DBpedia" id="link-id10a1b378">DBpedia</a> & <a href="http://www.mpi-inf.mpg.de/~suchanek/downloads/yago/" id="link-id10934068">Yago</a> integration took place last year (around WWW2007, Banff) there was a little, but costly omission that occurred: nobody sought to load the <a href="http://www.mpi-inf.mpg.de/~suchanek/downloads/yago/" id="link-id106e47f0">Yago</a> Class Hierarchy into the <a href="http://virtuoso.openlinksw.com" id="link-id13f90890">Virtuoso</a>'s Inference Engine :-(</p> <p> Anyway, the Class Hierarchy has now been loaded into the <a href="http://virtuoso.openlinksw.com" id="link-id100004f8">Virtuoso</a>'s inference engine (as <a href="http://virtuoso.openlinksw.com" id="link-id139900e8">Virtuoso</a> Inference Rules) and the following queries are now feasible using the live <a href="http://virtuoso.openlinksw.com" id="link-id109b02c8">Virtuoso</a> based <a href="http://dbpedia.org/resource/DBpedia" id="link-id143624d8">DBpedia</a> instance hosted by <a href="http://www.openlinksw.com/dataspace/organization/openlink#this" id="link-id12f918c0">OpenLink Software</a>:</p> <p> -- Find all Fiction Books associated with a property "dbpedia:name" that has literal value: "The Lord of the Rings" .</p> <p> <span _fck_bookmark="1" style="display: none; "> </span> </p> <p> <span style="font-size:16px;"><span style="font-family:courier new,courier,monospace;">DEFINE input:inference "http://dbpedia.org/resource/inference/rules/yago#"<br /> </span></span> </p> <p> <span style="font-size:16px;"> <span style="font-family:courier new,courier,monospace;"><span class="Apple-style-span">PREFIX rdf: &lt;http://www.w3.org/1999/02/22-rdf-syntax-ns#&gt;</span> </span></span> </p> <p> <span style="font-size:16px;"><span style="font-family:courier new,courier,monospace;">PREFIX dbpedia: &lt;http://dbpedia.org/property&gt;</span></span> </p> <p> <span style="font-size:16px;"><span style="font-family:courier new,courier,monospace;">PREFIX yago: &lt;http://dbpedia.org/class/yago&gt;&nbsp;</span></span> </p> <div> <span style="font-size:16px;"><span style="font-family:courier new,courier,monospace;"><br /> </span></span> </div> <div> <span style="font-size:16px;"><span style="font-family:courier new,courier,monospace;">SELECT DISTINCT ?s</span></span> </div> <div> <span style="font-size:16px;"><span style="font-family:courier new,courier,monospace;">FROM < xmlns="http" dbpedia.org="dbpedia.org">//dbpedia.org></span></span> </div> <div> <span style="font-size:16px;"><span style="font-family:courier new,courier,monospace;">WHERE {</span></span> </div> <div> <span style="font-size:16px;"><span style="font-family:courier new,courier,monospace;">?s a yago:Fiction106367107 .</span></span> </div> <div> <span style="font-size:16px;"><span style="font-family:courier new,courier,monospace;">?s dbpedia:name "The Lord of the Rings"@en .</span></span> </div> <div> <span style="font-size:16px;"><span style="font-family:courier new,courier,monospace;">}</span></span> </div> <p> -- Variant of query with <a href="http://virtuoso.openlinksw.com" id="link-id10870920">Virtuoso</a>'s Full Text Index extension via the bif:contains function/magic predicate</p> <p> <span style="font-size:14px;"><span style="font-family:courier new,courier,monospace;">DEFINE input:inference "http://dbpedia.org/resource/inference/rules/yago#"</span></span> </p> <p> <span style="font-size:14px;"><span style="font-family:courier new,courier,monospace;">PREFIX rdf: &lt;http://www.w3.org/1999/02/22-rdf-syntax-ns#&gt;</span></span> </p> <p> <span style="font-size:16px;"><span style="font-family:courier new,courier,monospace;">PREFIX dbpedia: &lt;http://dbpedia.org/property&gt;</span></span> </p> <p> <span style="font-size:16px;"><span style="font-family:courier new,courier,monospace;">PREFIX yago: &lt;http://dbpedia.org/class/yago&gt;&nbsp;</span></span> </p> <p> <span style="font-size:16px;"><span style="font-family:courier new,courier,monospace;">SELECT DISTINCT ?s ?n</span></span> </p> <p> <span style="font-size:16px;"><span style="font-family:courier new,courier,monospace;">FROM < xmlns="http" dbpedia.org="dbpedia.org">//dbpedia.org></span></span> </p> <p> <span style="font-size:16px;"><span style="font-family:courier new,courier,monospace;">WHERE {</span></span> </p> <p> <span style="font-size:16px;"><span style="font-family:courier new,courier,monospace;">?s a yago:Fiction106367107 .</span></span> </p> <p> <span style="font-size:16px;"><span style="font-family:courier new,courier,monospace;">?s dbpedia:name ?n .</span></span> </p> <p> <span style="font-size:16px;"><span style="font-family:courier new,courier,monospace;">?n bif:contains 'Lord and Rings'</span></span> </p> <p> <span style="font-size:16px;"><span style="font-family:courier new,courier,monospace;">}</span></span> </p> <p> -- Retrieve all individuals instances of Fiction Class which should include all Books.</p> <p> <span style="font-family:courier new,courier,monospace;"><span style="font-size:16px;">DEFINE input:inference "http://dbpedia.org/resource/inference/rules/yago#"<br /> </span></span> </p> <p> <span style="font-family:courier new,courier,monospace;"> <span style="font-size:16px;"><span class="Apple-style-span">PREFIX rdf: &lt;http://www.w3.org/1999/02/22-rdf-syntax-ns#&gt;</span> </span></span> </p> <p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica"> <span style="font-family:courier new,courier,monospace;"><span style="font-size:16px;">PREFIX dbpedia: &lt;http://dbpedia.org/property&gt;<br /> </span></span> </p> <p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica"> <span style="font-family:courier new,courier,monospace;"><br /> </span> </p> <p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica"> <span style="font-family:courier new,courier,monospace;"><span style="font-size:16px;">PREFIX yago: &lt;http://dbpedia.org/class/yago&gt;&nbsp;</span></span> </p> <div> <span style="font-family:courier new,courier,monospace;"><br /> </span> </div> <div> <span style="font-family:courier new,courier,monospace;">SELECT DISTINCT ?s</span> </div> <div> <span style="font-family:courier new,courier,monospace;">FROM < xmlns="http" dbpedia.org="dbpedia.org">//dbpedia.org></span> </div> <div> <span style="font-family:courier new,courier,monospace;">WHERE {</span> </div> <div> <span style="font-family:courier new,courier,monospace;">?s a yago:Fiction106367107 .</span> </div> <div> <span style="font-family:courier new,courier,monospace;">} LIMIT 50</span> </div> <p> Note: you can also move the inference pragmas to the <a href="http://virtuoso.openlinksw.com" id="link-id13dd0d20">Virtuoso</a> Sever side i.e place the inference rules in a server instance config file, thereby negating the need to place "define input:inference 'http://dbpedia.org/resource/inference/rules/yago#'" pragmas directly in your <a href="http://dbpedia.org/resource/SPARQL" id="link-id10dddd08">SPARQL</a> queries.</p> <h3> Related</h3> <ul> <li> Mike's <a href="http://www.mkbergman.com/?p=431" id="link-id13f2f318">UMBEL: Making Linked Data Classy</a>post</li> <li> Fred's announcement about the <a href="http://fgiasson.com/blog/index.php/2007/12/20/second-version-of-yago-more-facts-and-entities/" id="link-id10a1b178">Yago revamp en route to UMBEL</a> </li> <li> <uo> <a href="http://fgiasson.com/blog/index.php/2008/04/20/exploding-the-domain-umbel-web-services-by-zitgist/" id="link-id14363358">Expanding Data Object Domains via UMBEL</a> </uo> </li> <li> My <a href="http://www.openlinksw.com/weblog/public/search.vspx?blogid=127&q=umbel&type=text&output=html" id="link-id1101ca98">Prior posts about UMBEL</a> </li> </ul>
DBpedia receives shot #1 of CLASSiness vaccine
2010-07-13T14:45:40Z
2010-07-13T10:45:40-04:00
Kingsley Uyi Idehen
kidehen@openlinksw.com
http://www.openlinksw.com/dataspace/kidehen@openlinksw.com/weblog/kidehen@openlinksw.com%27s%20BLOG%20%5B127%5D/1366
<p>Courtesy of <a href="http://novaspivack.typepad.com/about.html" id="link-id101d8750">Nova Spivack</a>'s post titled: <a href="http://feeds.feedburner.com/~r/typepad/MindingThePlanet/~3/295624567/tagging-and-the.html" id="link-id11067248">Tagging and the Semantic Web: Tags as Objects</a>, I stumbled across a related post by <a href="http://www.designmills.com/" id="link-idffb9a38">John Clarke</a> titled: <a href="http://feeds.feedburner.com/~r/DesignMills/~3/294554634/" id="link-id101d6138">Tagging and the Semantic Web</a>. Both of these posts use the common practice of tagging to shed light on the increasing realization that "<a href="http://dbpedia.org/resource/Context_%28language_use%29" id="link-id11011f98"><a href="http://www.openlinksw.com/dataspace/kidehen@openlinksw.com/weblog/kidehen@openlinksw.com%27s%20BLOG%20%5B127%5D/1356" id="link-id1003f248">The Pursuit of Context</a></a>" is the fusion point between the current <a href="http://dbpedia.org/resource/World_Wide_Web">Web</a> and its evolution into a structured Web of <a href="http://dbpedia.org/resource/Linked_Data" id="link-id101d6788">Linked Data</a>.</p> <h3>How Semantic Tagging Works (from a 1000 feet)</h3> <p>When tagging a document, the semantic tagging service passes the content of a target document through a processing pipeline (a distillation process of sorts) that results in automagic extraction of the following:</p> <ul> -- <a href="http://dbpedia.org/resource/Named_entity_recognition" id="link-id1015fdd0">Named Entities</a> </ul> <ul>-- <a href="http://dbpedia.org/resource/Topic" id="link-id100ccff8">Subject matter Entities</a> (<a href="http://dbpedia.org/resource/Topic" id="link-idfe9a898">Subject matter Concepts</a> reflecting topics covered by the document</ul> <p>Once the extraction phase is completed, a user is presented with a list of "suggested tags" using a variety of user interaction techniques. The literal values of elected Tags are then associated with one or more <a href="http://dbpedia.org/resource/Tag" id="link-idfed5eb0">Tag</a> and <a href="http://dbpedia.org/resource/Tag" id="link-id101ae0c8">Tag</a> Meaning <a href="http://dbpedia.org/resource/Data">Data</a> Objects, with each Object type endowed with a unique Identifier.</p> <h3>Issues to Note</h3> <p>Broad acceptance that: "<a href="http://dbpedia.org/resource/Context_%28language_use%29" id="link-id100b9010">Context</a> is king", is gradually taking shape. That said, "<a href="http://dbpedia.org/resource/Context_%28language_use%29" id="link-id101d2670">Context</a>" landlocked within Literal values offers little over what we have right now (e.g. at <a href="http://del.icio.us" id="link-id1004be08">Del.icio.us</a> or <a href="http://www.technorati.com" id="link-id100421c8">Technorati</a>), long term. By this I mean: if the end product of semantically enhanced tagging leaves us with: Literal <a href="http://dbpedia.org/resource/Tag" id="link-id101e5730">Tag</a> values only, Tags associated with <a href="http://dbpedia.org/resource/Tag" id="link-id1004a890">Tag</a> Data Objects endowed with platform specific Identifiers, or <a href="http://dbpedia.org/resource/Tag" id="link-id100364f8">Tag</a> Data Objects with any other Identity scheme that excludes <a href="http://dbpedia.org/resource/Hypertext_Transfer_Protocol" id="link-id101e6630">HTTP</a>, the ability of Web users to discern or derive multiple perspectives from the base <a href="http://dbpedia.org/resource/Context_%28language_use%29" id="link-id10180868">Context</a> (exposed by semantically enhanced Tags) will be lost, or severely impeded at best.</p> <p>The shape, form, and quality of the lookup substrate that underlies semantic tagging services, ultimately affects "<a href="http://dbpedia.org/resource/Context_%28language_use%29" id="link-id10160f28">context</a> fidelity" matters such as <a href="http://dbpedia.org/resource/Entity" id="link-id100f2618">Entity</a> Disambiguation. The importance of quality lookup infrastructure on the burgeoning <a href="http://dbpedia.org/resource/Giant_Global_Graph" id="link-id10044b10">Linked Data Web</a> is the reason why <a href="http://www.openlinksw.com/dataspace/organization/openlink#this" id="link-id10102360">OpenLink Software</a> is intimately involved with the <a href="http://dbpedia.org/resource/DBpedia" id="link-id110760f8">DBpedia</a> and <a href="http://umbel.org/about/" id="link-id1015fc68">UMBEL</a> projects. </p> <h3>Conclusions</h3> <p>I am immensely happy to see that the Web 2.0 and <a href="http://dbpedia.org/resource/Semantic_Web" id="link-idffb8ca8">Semantic Web</a> communities are beginning to coalesce around the issue of "<a href="http://dbpedia.org/resource/Context_%28language_use%29" id="link-id101656b0">Context</a>". This was the case at the <a href="http://events.linkeddata.org/ldow2008/" id="link-id1017b878">WWW2008 Linked Data Workshop</a>, I am feeling a similar vibe emerging from the <a href="http://www.semantic-conference.com/" id="link-idffb9978">Semantic Web Technologies</a> conference currently nearing completion in San Jose. Of course, I will be talking about, and demonstrating practical utility of all of this, at the upcoming <a href="http://www.linkeddataplanet.com" id="link-id10042168">Linked Data Planet</a> conference.</p> <h3>Related</h3> <ul> <a href="http://www.openlinksw.com/dataspace/kidehen@openlinksw.com/weblog/kidehen@openlinksw.com%27s%20BLOG%20%5B127%5D/tagcloud" id="link-id147a1848">My Data Space Tag Cloud</a> (*a <a href="http://dbpedia.org/resource/Linked_Data" id="link-id0x24756e98">Linked Data</a> <a href="http://en.wikipedia.org/wiki/Data_Spaces" id="link-id0x24c2bd20">Space</a>*) </ul> <ul> <a href="http://www.faviki.com/" id="link-id101ac668">Faviki</a> (note: this service needs to expose <a href="http://dbpedia.org/resource/Linked_Data" id="link-id1042cdc0">Linked Data</a> compliant <a href="http://dbpedia.org/resource/Tag" id="link-id1038c2e0">Tag</a> URIs) </ul> <ul> <a href="http://moat-project.org/ontology" id="link-id10199770">MOAT Ontology</a> </ul>
Context, Tagging, Semantic Web, and Linked Data (Updated)
2008-05-27T22:36:37Z
2008-05-27T18:36:37-04:00
Kingsley Uyi Idehen
kidehen@openlinksw.com
http://www.openlinksw.com/dataspace/kidehen@openlinksw.com/weblog/kidehen@openlinksw.com%27s%20BLOG%20%5B127%5D/1356
<p>I've always been of the opinion that concise value proposition articulation shouldn't be the achilles of the <a href="http://dbpedia.org/resource/Semantic_Web" id="link-id158efe90">Semantic Web</a>. As the <a href="http://dbpedia.org/resource/Linked_Data" id="link-id13a2db40">Linked Data</a> wave climbs up the "value Appreciation and Comprehension chain", it's getting clearer by the second that "<a href="http://dbpedia.org/resource/Context_%28language_use%29" id="link-id109316f0">Context</a>" is a point of confluence for <a href="http://dbpedia.org/resource/Semantic_Web" id="link-id108daa60">Semantic Web</a> Technologies and easy to comprehend value, from the perspectives of those outside the core community.</p> <p>In today's primarily Document centric <a href="http://dbpedia.org/resource/World_Wide_Web">Web</a>, the pursuit of <a href="http://dbpedia.org/resource/Context_%28language_use%29" id="link-id14edadd0">Context</a> is akin to pursuing a mirage in a desert of user generated content. The quest is labor intensive, and you ultimaely end up without water at the end of the pursuit :-)</p> <p>Listening to the <a href="http://blogs.talis.com/nodalities/2008/05/christine-connors-talks-about-semantic-technologies-at-dow-jones.php" id="link-id12d5e1c0">Christine Connor's podcast interview with Talis</a> simply reinforces my strong belief that "<a href="http://dbpedia.org/resource/Context_%28language_use%29" id="link-id0x1ec69518">Context</a>, Context, Context" is the <a href="http://dbpedia.org/resource/Semantic_Web" id="link-id0xa279438">Semantic Web</a>'s equivalent of Real Estate's "Location, Location, Location" (ignore the <a href="http://dbpedia.org/resource/Subprime_lending" id="link-id140b8098">subprime</a> loans mess for now). The critical thing to note is that you cannot unravel "Context" from existing Web content without incorporating powerful disambiguation technology into an "<a href="http://dbpedia.org/resource/Entity" id="link-id15a2f380">Entity</a> Extraction" process. Of course, you cannot even consider seriously pursing any <a href="http://dbpedia.org/resource/Entity" id="link-id10868a18">entity</a> extraction and disambiguation endeavor without a lookup backbone that exposes "<a href="http://dbpedia.org/resource/Named_entity_recognition" id="link-id168dc230">Named Entities</a>" and their relationships to "<a href="http://dbpedia.org/resource/Topic" id="link-id17cb1950">Subject matter Concepts</a>" (BTW - this is what <a href="http://umbel.org/about/" id="link-id14f406a0">UMBEL</a> is all about). Thus, when looking at the broad subject of the <a href="http://dbpedia.org/resource/Semantic_Web">Semantic Web</a>, we can also look at "Context" as the vital point of confluence for the <a href="http://dbpedia.org/resource/Data" id="link-id12d67e38">Data</a> oriented (<a href="http://dbpedia.org/resource/Linked_Data" id="link-id14f8daf0">Linked Data</a>) and the "Linguistic Meaning" oriented perspectives.</p> <p>I am even inclined to state publicly that "Context" may ultimately be the foundation for <a href="http://www.openlinksw.com/weblog/public/search.vspx?blogid=127&q=dimension%20web%204.0%20&type=text&output=html" id="link-id17cb0708">4th "Web Interaction Dimension"</a> where practical use of <a href="http://dbpedia.org/resource/Artificial_intelligence" id="link-id10b15088">AI</a> leverages a <a href="http://dbpedia.org/resource/Linked_Data" id="link-id0x1ebf9310">Linked Data</a> <a href="http://dbpedia.org/resource/Giant_Global_Graph" id="link-id10b27018">Web</a> substrate en route to exposing new kinds of value :-)</p> <p>"Context" may also be the focal point of concise value proposition articulation to <a href="http://dbpedia.org/resource/Venture_Capital" id="link-id10837578">VCs</a> as in: "My solution offers the ability to discover and exploit "Context" iteratively, at the rate of $X.XX per iteration, across a variety of market segments :-)</p>
In Perpetual Pursuit of Context
2008-05-03T19:07:32Z
2008-05-03T15:07:32-04:00
Kingsley Uyi Idehen
kidehen@openlinksw.com