http://myopenlink.net/weblog/kidehen/
Kingsley Uyi Idehen's Weblog
Kingsley Idehen
kidehen@openlinksw.com
2008-07-27T09:12:24Z
Virtuoso Universal Server 05.07.3032
http://myopenlink.net/weblog/public/images/vbloglogo.gif
CrunchBase gets hooked up with the Linked Data Web!
http://myopenlink.net/weblog/kidehen/?id=1749
2008-07-25T14:01:01Z
<p>It's getting really hot in <a href="http://dbpedia.org/resource/Linked_Data" id="link-id15eea8f8">Linked Data</a> land! Two days ago <a href="http://bnode.org/about" id="link-id107e2f70">Benjamin Nowack</a> pinged the <a href="http://community.linkeddata.org/dataspace/organization/lod#this" id="link-id11b93670">LOD</a> community about his <a href="http://lists.w3.org/Archives/Public/public-lod/2008Jul/0110.html" id="link-id1022a270">RDFization of Crunchbase</a> (sample (X)HTML view: http://cb.semsol.org/company/opera-software) courtesy of Crounchbase releasing an API. As you know, I've always equated Web Service API to Database CLIs (<a href="http://dbpedia.org/resource/Open_Database_Connectivity" id="link-id16327528">ODBC</a>, <a href="http://dbpedia.org/resource/Java_Database_Connectivity" id="link-id1027f410">JDBC</a>, <a href="http://dbpedia.org/resource/ADO.NET" id="link-id10683850">ADO</a>.<a href="http://dbpedia.org/resource/ADO.NET" id="link-id13beb9b8">NET</a> etc.) as both offer code level hooks into Data Spaces.</p> <p></p> <p></p> <p>Naturally, we've decided to join the Crunchbase RDFization party, and have just completed a <a href="http://virtuoso.openlinksw.com" id="link-id10282208">Virtuoso</a> <a href="http://virtuoso.openlinksw.com/Whitepapers/html/VirtSpongerWhitePaper.html" id="link-id10acf0f8">Sponger</a> Cartridge (an RDFizer) for Crouncbase. What we add in our particular cartridge is add meshing with <a href="http://dbpedia.org/resource/DBpedia" id="link-id115e2a98">DBpedia</a> and Wikicompany <a href="http://dbpedia.org/resource/Linked_Data" id="link-id132f0568">Linked Data</a> Spaces, plus RDFizaton of the Crunchbase (X)HTML pages :-)</p> <p></p> <p></p> <p>As I've postulated for a while, <a href="http://dbpedia.org/resource/Linked_Data" id="link-id13304010">Linked Data</a> is about data "Meshing" and "Meshups". This isn't a buzzword play. I am pointing out an important distinction between "Mashups" and "Meshpus". Which goes as follows: "Mashups" are about code level joining devoid of structured modelling, hence the revelation of code as opposed to data when you look behind a "Mashup". "Meshups" on the other hand, are about joining disparate structured data sources across the Web. And when you look behind a "Meshup" you see structured data (preferably <a href="http://dbpedia.org/resource/Linked_Data" id="link-id143bdb68">Linked Data</a>) that enables further "Meshing".</p> <p></p> <p></p> <p>I truly believe that we are now inches away from critical mass re. <a href="http://dbpedia.org/resource/Linked_Data" id="link-id0x11e3c6e0">Linked Data</a>, and because we are dealing with data, the network-effect will be sky-high! I shudder to think about the state of the Linked Data <a href="http://dbpedia.org/resource/Giant_Global_Graph" id="link-id133364e8">Web</a> in 12 months time. Yes, I am giving the explosion 12 months (or less). These are very exciting times.</p> <p></p> <p></p> <p>Demo Links:</p> <p></p> <p></p> <ul> <li> <a href="http://demo.openlinksw.com/ode/?uri%5B%5D=http%3A%2F%2Fcb.semsol.org%2Fcompany%2Fopera-software&" id="link-id12fe1dc8">Opera Software via Benjee's Linked Data Space for Cunchbase</a> </li> <li> <a href="http://demo.openlinksw.com/ode/?uri=http%3A%2F%2Fwww.crunchbase.com%2Fcompany%2Fopera-software" id="link-id10739a18">Opera Software via our Linked Data Space for Crunchbas</a> </li> </ul> <p></p> <p></p> <p>For best experience I encourage you to look at the <a href="https://addons.mozilla.org/en-US/firefox/addon/8062" id="link-id1499a0f8">OpenLink Data Explorer extension</a> for Firefox (2.x - 3.x). This enables you to go to Crunchbase (X)HTML pages (and other sites on the Web of course), and then simply use the "View | Linked Data Sources" main or <a href="http://dbpedia.org/resource/Context_%28language_use%29" id="link-id10051b50">context</a> menu sequence to unveil the Linked Data Sources associated with any Web Page.</p> <p></p> <p>Of course there is much more to come!</p>
Kingsley Idehen
kidehen@openlinksw.com
2008-07-25T21:26:05.000-04:00
Twine Opens Up Linked Data Style!
http://myopenlink.net/weblog/kidehen/?id=1748
2008-07-25T02:18:00Z
<p>Note to Nova: big time welcome to the <a href="http://dbpedia.org/resource/Linked_Data" id="link-id10a424f0">Linked Data</a> <a href="http://dbpedia.org/resource/Giant_Global_Graph" id="link-id13351960">Web</a>!</p> <p>I've just digested <a href="http://www.twine.com/item/1w3ckhq8-997" id="link-id103a38b0">Nova</a>'s post <a href="http://novaspivack.typepad.com/nova_spivacks_weblog/2008/07/subscribe-to-my.html" id="link-id105be838">announcing the opening up of Twine</a>. My test was simple, I opened up his Twine page using Firefox (with the new <a href="https://addons.mozilla.org/en-US/firefox/addon/8062" id="link-id103d2148">OpenLink Data Explorer extension</a> in place), and then simply executed the following browser menu sequence:</p> <ol> <li>View</li> <li> <a href="http://dbpedia.org/resource/Linked_Data" id="link-id102b7880">Linked Data</a> Sources</li> </ol> <p>And voila! The Twine page morphs into a <a href="http://dbpedia.org/resource/Linked_Data" id="link-id137b5cd0">Linked Data</a> <a href="http://en.wikipedia.org/wiki/Data_Spaces" id="link-id10467260">Space</a> where each <a href="http://dbpedia.org/resource/Entity" id="link-id16296328">entity</a> presented is endowed with <a href="http://intranet.usnet.private:8893/RPC2" id="link-id1053b2f0">dereferencable URIs</a>; enabling me to traverse and/or <a href="http://demo.openlinksw.com/ode/?uri%5B%5D=http%3A%2F%2Fwww.twine.com%2Ftwine%2F1p2dqhdx-1jg%2Fnova-spivack-my-public-twine&uri%5B%5D=http%3A%2F%2Fwww.twine.com%2Fitem%2F1w3ckhq8-997&uri%5B%5D=http%3A%2F%2Fmyopenlink.net%2Fdataspace%2Fperson%2Fkidehen&" id="link-id106eb2a0">Mesh</a> his data with other <a href="http://dbpedia.org/resource/Linked_Data" id="link-id0x10d08bf0">Linked Data</a> Spaces such as <a href="http://myopenlink.net/dataspace/person/kidehen" id="link-id12e51748">mine</a>, for instance.</p> <p>This is what Linked Data is all about! The fun has only just begun :-)</p>
Kingsley Idehen
kidehen@openlinksw.com
2008-07-25T21:26:00.000-04:00
Response to: Where's the Killer Semantic Web Application (Update #2)
http://myopenlink.net/weblog/kidehen/?id=1745
2008-06-26T18:28:14Z
<p>As is often the case these days, it's much easier to drop a <a href="http://dbpedia.org/resource/Blog" id="link-id13519b98">blog</a> post than it is to make a simple comment in an "old media" style<a href="http://en.wikipedia.org/wiki/Data_Spaces" id="link-id134e92c8"> data space </a>:-(</p> <blockquote> <p> <cite>My use of "old media" implies: a place that still seeks subscriber data (no OpenID etc..), for the umpteenth time, as the toll fee for discourse development and participation on the Web.</cite> </p> </blockquote> <p>Anyway, here is what I attempted to post as a comment to Dan Grigorovici's post titled: <a href="http://www.semanticweb.com/article.php/12160_3753806_2" id="link-id134dfb80">Where is the Semantic Web Killer App?</a> </p> <p>Dan,</p> <p>An intriguing post to say the least :-) </p> <p>"<a href="http://dbpedia.org/resource/Linked_Data" id="link-id134265c0">Linked Data</a>" and "<a href="http://dbpedia.org/resource/Semantic_Web" id="link-id133d7048">Semantic Web</a>" aren't synonymous, they are simply connected, infrastructure DNA-wise. You can have "<a href="http://dbpedia.org/resource/Semantic_Web" id="link-id1096cb70">Semantic Web</a>" style graphs (i.e RDF Data) and not have "<a href="http://dbpedia.org/resource/Linked_Data" id="link-id133f0f48">Linked Data</a>" as per <a href="http://dbpedia.org/resource/Linked_Data" id="link-id134fc7c0">Linked Data</a> deployment tenets and best practices, a very important point.</p> <p>I've stated repeatedly, the "<a href="http://dbpedia.org/resource/Linked_Data" id="link-id134f03e8">Linked Data</a>" emphasis has more to do with focusing on a point of crystallization within the larger "<a href="http://dbpedia.org/resource/Semantic_Web" id="link-id134104f0">Semantic Web</a>" vision, so here is a quick recap:</p> <h3>What is <a href="http://dbpedia.org/resource/Linked_Data" id="link-id133decd0">Linked Data</a>?</h3> <p>A term coined by <a href="http://www.w3.org/People/Berners-Lee/card#i" id="link-id1340dd28">TimBL</a> that describes an application of HTTP to the time-tested process of "<a href="http://dbpedia.org/resource/Reference_(computer_science)" id="link-id0x9933e068">Data Access by Reference</a>". "<a href="http://dbpedia.org/resource/Linked_Data" id="link-id10695c20">Linked Data</a>" adds vital items to the "Data Access by Reference" pattern that have been erstwhile unattainable:</p> <ul> <li> The use of a Data Source Naming scoped to Database / Data Container Records as opposed to Tables, Views, Stored Procedures, Databases, and other Record Container tuple collections. Example: in <a href="http://dbpedia.org/resource/Open_Database_Connectivity" id="link-idd9c8af8">ODBC</a> / <a href="http://dbpedia.org/resource/Java_Database_Connectivity" id="link-id130b0df0">JDBC</a>, a Data Source Name's scope stops at the Table / View level. In the <a href="http://dbpedia.org/resource/Linked_Data" id="link-id0x118be488">Linked Data</a> realm you get an added layer of granularity due to record level name scope</li> <li>Incorporation of HTTP into the Data Source Naming scheme, which injects the expanse of the Web into the Data Access Range of the Data Source Name (i.e. a Named Record); so you can reference a record's description directly via HTTP which is simply a major deal (to put things mildly).</li> </ul> <p>So we have HTTP based URIs as the Data Sources Names for a "Linked Data <a href="http://dbpedia.org/resource/Giant_Global_Graph" id="link-id1044a2d8">Web</a>" i.e a Web of inter-connected Data Source Names that de-emphasize the importance of their host containers (Compound Documents / <a href="http://dbpedia.org/resource/Information" id="link-id134e0d38">Information</a> Resources).</p> <p>The business case or value proposition of "Linked Data" is synonymous with the value proposition of data access technologies such as <a href="http://dbpedia.org/resource/Open_Database_Connectivity" id="link-id13400500">ODBC</a>, <a href="http://dbpedia.org/resource/Java_Database_Connectivity" id="link-id134f0250">JDBC</a>. <a href="http://dbpedia.org/resource/ADO.NET" id="link-id10923840">ADO</a>.<a href="http://dbpedia.org/resource/ADO.NET" id="link-id134ef878">NET</a>, OLE-DB, XMLA, and others (enterprise or consumer) in relation to the Individual and Enterprise pursuit of agility; in a realm where data is growing exponentially, and the maximum processing time in a single day remains 24 hrs. Data Access & Data Integration are timeless challenges due to the following constants:</p> <ul> <li> Structured Data Schema Heterogeneity - we will always model the same things differently</li> <li>Dirtiness of Data within Structured Data Containers - we are error prone due to laziness / sloppiness, time constraints, and the inherent limitation of our DNA based CPUs when dealing with large volumes of data.</li> </ul> <p> Note: The line between the Enterprise & Individuals continue to blur by the second, this is something I covered during my <a href="http://virtuoso.openlinksw.com/presentations/Creating_Deploying_Exploiting_Linked_Data2/Creating_Deploying_Exploiting_Linked_Data2.html" id="link-id13479488">Linked Data Planet keynote</a>, which is like most things I put on the Web (via this <a href="http://dbpedia.org/resource/Blog" id="link-id130ac870">blog</a> <a href="http://en.wikipedia.org/wiki/Data_Spaces" id="link-id10923ba8">data space</a>), is a live and practical demonstration of the virtues of Linked Data courtesy of <a href="http://dbpedia.org/resource/RDFa" id="link-id133fd270">RDFa</a>, the <a href="http://bibliontology.com/" id="link-id134248d8">Bibliographic Ontology</a>, and dereferencable URIs (i.e. HTTP based Data Source Names for Documents and the Entities they host).</p> <h3>Related</h3> <ul> <li> <a href="http://zitgist.com/labs/linked_data.html" id="link-id104778a8">Linked Data FAQ</a> - by <a href="http://community.linkeddata.org/dataspace/person/mkbergman#this" id="link-idd8e71b0">Mike Bergman</a> </li> <li> <a href="http://www.wired.com/special_multimedia/2008/st_infoporn_1607" id="link-id134c1e80">The Planetary Computer</a> from <a href="http://www.wired.com" id="link-id13416518">Wired Magazine</a> - which is basically the effect of Linked Data under a different label (note to Wired: "Tired of old Media repetitive Registrations" when seeking to make comments in the OpenID era!).</li> </ul>
Kingsley Idehen
kidehen@openlinksw.com
2008-07-19T16:13:16.2000-04:00
Metcalfe, Einstein, and Linked Data
http://myopenlink.net/weblog/kidehen/?id=1744
2008-06-23T20:48:30Z
<p>Metcalfe’s law states that the value of a telecommunications network is proportional to the square of the number of users of the system (n²), where the linkages between users (nodes) exist by definition. For <a href="http://dbpedia.org/resource/Information" id="link-id106b0c10">information</a> bases, the data objects are the nodes. <a href="http://dbpedia.org/resource/Linked_Data" id="link-id13fc5940">Linked Data</a> works to add the connections between the nodes.</p> <p>I would tweak of the law modification expressed in <a href="http://community.linkeddata.org/dataspace/person/mkbergman#this" id="link-id1401cce0">Mike Bergman</a>'s <a href="http://feeds.feedburner.com/~r/AI3_AdaptiveInformation/~3/318146056/" id="link-id104fc870">post</a> which states:</p> <blockquote> <cite>the value of a <a href="http://dbpedia.org/resource/Linked_Data" id="link-id0x50c38d30">Linked Data</a> network is proportional to the square of the number of links between the data objects.</cite> </blockquote> By simply injecting "<a href="http://dbpedia.org/resource/Context_%28language_use%29" id="link-id10ca1eb8">Context</a>" which is what a high fidelity linked data mesh facilitates i.e. a mesh of weighted links endowed with specifically typed links (as opposed to a single ambiguous type unspecific link), you end up with an even more insight into the power of a Linked Data <a href="http://dbpedia.org/resource/Giant_Global_Graph" id="link-id10cebfc8">Web</a>. <h3>Channeling Einstein</h3> <p>How about <a href="http://dbpedia.org/resource/Albert_Einstein" id="link-id1115dd38">Einstein</a>'s E=mc<sup>2</sup>? I am talking Energy (vitality) and Network Mesh equivalence, where "E" is for Energy, "m" for Mesh (i.e. Network Mesh where each node contains sub-particles that are themselves network meshes all endowed with typed links and weightings), and "<a href="http://dbpedia.org/resource/C_(programming_language)" id="link-id10b632c0">c</a>" is for computer processing speed (processing speed is growing exponentially!). When you beam queries down a <a href="http://dbpedia.org/resource/Context_%28language_use%29" id="link-id0x5d6c0dc0">context</a> rich mesh (a <a href="http://dbpedia.org/resource/Giant_Global_Graph" id="link-id10acf280">giant global graph</a> comprised of named and dereferencable data sources), especially a mesh to which we are all connected, what do you get? Infrastructure for generating an unbelievable amount of intellectual energy (the result of exploding the sub-data-graphs within graph nodes) that is much better equipped to handle current and future challenges. Even better, we end up making constructive use of Einstein's findings (remember, we built a bomb the first time around!). <a href="http://www.w3.org/People/Berners-Lee/" id="link-id10ece0b8">TimBL</a> articulates this fundamental value of the Web in slightly different language, but at the core, this is the essence of the Web as I believe he envisioned; the ability to connect us all in such a way that we exploit our collective manpower and <a href="http://dbpedia.org/resource/Knowledge" id="link-id1300bf58">knowledge</a> constructively and unobtrusively, en route to making the world a much better place :-)</p> <p>Note: None of this in incongruent with being compensated (i.e. making money) for contributing tangible value into, or around, the Mesh we know as the Web :-)</p> <h3>Related</h3> <ul> <li> <a href="http://dbpedia.org/resource/Business_@_the_Speed_of_Thought" id="link-id1095d330">Business at the Speed of Thought</a> - by <a href="http://dbpedia.org/resource/Bill_Gates" id="link-id14043c50">Bill Gates</a> </li> <li> <a href="http://www.gladwell.com/blink/index.html" id="link-id1043a4d0">Blink</a> - by <a href="http://dbpedia.org/resource/Malcolm_Gladwell" id="link-id13825918">Malcolm Gladwell</a> </li> </ul>
Kingsley Idehen
kidehen@openlinksw.com
2008-06-23T16:54:34.5000-04:00
A Simple Linked Data Guide for the Enterprise
http://myopenlink.net/weblog/kidehen/?id=1743
2008-06-23T19:29:16Z
<p> <a href="http://community.linkeddata.org/dataspace/person/mkbergman#this" id="link-id12dd9d88">Mike Bergman</a> has just published a nice <a href="http://feeds.feedburner.com/~r/AI3_AdaptiveInformation/~3/318146056/" id="link-id10b96a98">Linked Data FAQ</a> aimed at Enterprise audiences. His post draws on a collection of questions collated from a plethora of interactions with Enterprise oriented folks during last week's <a href="http://www.linkeddataplanet.com" id="link-id12276c00">Linked Data Planet conference</a>.</p> <p>Enjoy!</p>
Kingsley Idehen
kidehen@openlinksw.com
2008-06-23T16:54:33.000-04:00
What do people have against URLs or URIs? (Updated)
http://myopenlink.net/weblog/kidehen/?id=1742
2008-06-22T22:36:14Z
<p>Stumbled across a nice post titled: <a href="http://derivadow.com/2008/06/22/what-do-people-have-against-urls" id="link-id10c035c8">What do people have against URLs</a>?. My answer: Everything, if they don't understand the inherent power of URLs when incorporated into the "Data Source Naming" mechanism of the Web called: URIs :-)</p> <p>URIs are simple to use i.e you simply click on them via a user agents UI. However, URLs when incorporated into Data Source Naming en route to constructing HTTP based Identifiers, that deliver HTTP based pointers to the location / address of a Resource Descriptions, another matter.</p> <p>I touched on this issue in my <a href="http://virtuoso.openlinksw.com/presentations/Creating_Deploying_Exploiting_Linked_Data2/Creating_Deploying_Exploiting_Linked_Data2.html" id="link-id1076e998">Linked Data Planet keynote</a> last week, and I must say, it did set off a light.</p> <p>I believe, we can only get the broader Web community to comprehend the utility of URIs (Web Data Source Names) by exposing said utility via the Web's Universal Client (Web Browser). For instance, how do URN based Identity / Naming schemes help in a world dominated by Web Browsers that only grok "http://"? From my vantage point, the practical solution is for data providers who already have "doi", "lsid" and other Handle based Identifiers in place, to embark upon http-to-native-naming-scheme-proxying.</p> <p>In my usual "dog-fooding" and "practice what you preach" fashion, this is exactly what we do in the new <a href="http://myopenlink.net:8890/~kidehen/Public/rdfb.xpi" id="link-id13038bb0">Linked Data Web extension</a> that we've decided to reveal to the public (albeit late beta). Thus, when you use an existing browser to view pages with "lsid" or "doi" URNs, you still enjoy the utility of getting at the "Raw <a href="http://dbpedia.org/resource/Linked_Data" id="link-id1090f2a0">Linked Data</a> Sources" that these names expose.</p>
Kingsley Idehen
kidehen@openlinksw.com
2008-06-23T09:43:37.000-04:00
My Linked Data Planet Keynote (Updated with missing link)
http://myopenlink.net/weblog/kidehen/?id=1741
2008-06-19T01:25:43Z
<p>I've finally found a second to drop a note about my keynote.</p> <p>The keynote: <a href="http://virtuoso.openlinksw.com/presentations/Creating_Deploying_Exploiting_Linked_Data2/Creating_Deploying_Exploiting_Linked_Data2.html" id="link-id103acfb8">Creating, Deploying, and Exploiting Linked Data</a>, sought to achieve the fundamental goal of: Demystify the concept of "<a href="http://dbpedia.org/resource/Linked_Data" id="link-id107134e8">Linked Data</a>" using anecdotal material that resonates with enterprise decision makers.</p> <p>To my pleasure, 90% of the audience members confirmed familiarization with the "Data Source Name" concept of <a href="http://dbpedia.org/resource/Open_Database_Connectivity" id="link-id106d97a8">Open Database Connectivity</a> (<a href="http://dbpedia.org/resource/Open_Database_Connectivity" id="link-id10956268">ODBC</a>). Thus, all I had to do was map "<a href="http://dbpedia.org/resource/Linked_Data" id="link-id10a55728">Linked Data</a>" to <a href="http://dbpedia.org/resource/Open_Database_Connectivity" id="link-id10e77210">ODBC</a>, and then unveil the fundamental add-ons that "<a href="http://dbpedia.org/resource/Linked_Data" id="link-id10d1d290">Linked Data</a>" delivers:</p> <ul> <li>The ability to give database records names (Identifiers)</li> <li>The use of HTTP in the database record naming mechanism - which expands a named database record's reference scope via the expanse of the Web (i.e HTTP based Identifiers called URIs).</li> </ul> <p>I believe a majority of attendees came to realize that the combination above injects a new Web interaction dynamic: access to "<a href="http://dbpedia.org/resource/Topic" id="link-id110978d0">Subject matter Concepts</a>" and <a href="http://dbpedia.org/resource/Named_entity_recognition" id="link-id10ea5160">Named Entities</a> contained within a page via HTTP base Data Source Names (URIs).</p> <p>BTW - My presentation is a <a href="http://dbpedia.org/resource/Linked_Data" id="link-id109e5e30">Linked Data Space</a> in it's own right courtesy of the <a href="http://bibliontology.com/" id="link-id10e76d90">Bibliographic Ontology</a> (which provides slide show modeling) and <a href="http://dbpedia.org/resource/RDFa" id="link-id10d48e40">RDFa</a> that allows me to embed annotations into my <a href="http://www.w3.org/Talks/Tools/Slidy/" id="link-id104be488">Slidy</a> based presentation :-)</p> <h3>Related</h3> <ul> <li> <a href="http://virtuoso.openlinksw.com/presentations/Creating_Deploying_Exploiting_Linked_Data2/Linked_Data_2008_keynote.ppt" id="link-id10a63640">PowerPoint</a> version of Presentation</li> <li> <a href="http://www.slideshare.net/rumito/linked-data-planet-key-note/" id="link-id103aaff8">Slideshare hosted </a>version</li> <li> <a href="http://www.authorstream.com/Presentation/rumito-72460-linked-data-planet-key-note-2008-keynote-science-technology-ppt-powerpoint/" id="link-id10b97c68">Authorstream hosted </a>version</li> <li> <a href="http://docs.google.com/Presentation?id=dc7jvc6m_1061gz888hdb" id="link-id10e01640">Google Docs hosted </a>version</li> </ul>
Kingsley Idehen
kidehen@openlinksw.com
2008-06-19T10:07:44.000-04:00
Internet.com Interviews Jim Hendler & I
http://myopenlink.net/weblog/kidehen/?id=1740
2008-06-12T00:40:19Z
<p>The build up to <a href="http://www.linkeddataplanet.com" id="link-id110a2350">Linked Data Planet</a> continues... Here is <a href="http://www.semanticweb.com" id="link-id11083a68">semanticweb.com</a>'s interview with <a href="http://www.cs.rpi.edu/~hendler/" id="link-id10c4e560">Jim Hendler</a> and *<a href="http://community.linkeddata.org/dataspace/person/kidehen2#this" id="link-id10e71dc8">I</a>* titled: <a href="http://www.semanticweb.com//article.php/3751731" id="link-id1071c688">Linked Data Leaders - The Semantic Web is Here</a>.</p>
Kingsley Idehen
kidehen@openlinksw.com
2008-06-11T21:15:29.4000-04:00
Linked Data in Action: Library of Congress
http://myopenlink.net/weblog/kidehen/?id=1739
2008-06-11T16:36:40Z
<p>As I start my countdown to the upcoming <a href="http://www.linkeddataplanet.com" id="link-id106a81b8">Linked Data Planet conference</a>, here is the first of a series of posts geared towards showcasing practical use of the burgeoning <a href="http://dbpedia.org/resource/Giant_Global_Graph" id="link-id109470d0">Linked Data Web</a>.</p> <p>First up, the Library of Congress, take a look at the following pages which are "Human" and machine based "User Agent" friendly:</p> <ul> <li> <a href="http://lcsh.info/sh85118553#concept" id="link-id102927f8">Science</a> </li> <li> <a href="http://lcsh.info/sh85062913#concept" id="link-id10f13820">Humanities</a> </li> <li> <a href="http://lcsh.info/sh85082139#concept" id="link-id10ca5c58">Mathematics</a> </li> <li> <a href="http://lcsh.info/sh85020816#concept" id="link-id1230aef8">Cataloging</a> </li> <li> <a href="http://lcsh.info/sh95000541#concept" id="link-id1110e140">World Wide Web</a> </li> </ul> <p>You can see a tabulated view of all of the above, with associated links to RDF Browser views, at the <a href="http://lcsh.info/" id="link-id12ea18f0">Library of Congress Subject Headings home page</a>. This neat of piece of <a href="http://dbpedia.org/resource/Linked_Data" id="link-id0x98cc1ef8">Linked Data</a> artistry has be put together by <a href="http://www.inkdroid.org/" id="link-id1059c6e0">Ed Summers</a>.</p> <p>Note: The pages above are served up in line with <a href="http://dbpedia.org/resource/Linked_Data" id="link-id102f96a8">Linked Data</a> deployment and publishing tenets espoused by the <a href="http://community.linkeddata.org/dataspace/organization/lod#this" id="link-id10685ed8">Linking Open Data Community</a> (<a href="http://community.linkeddata.org/dataspace/organization/lod#this" id="link-id103915b0">LOD</a>) which include (in my preferred terminology):</p> <ul> <li>Giving "Names" to things you observe (aka Data Source Names or "DSNs" for short)</li> <li>Use HTTP URLs in your data source naming scheme so that "access by reference" to your data sources exploits the expanse of the HTTP driven Web i.e make your DSNs "<a href="http://dbpedia.org/resource/Linked_Data" id="link-id1071cb88">Linked Data Source Names</a>" (LDNS)</li> <li>Remember that Documents / Pages are compound in nature, and they aren't the only data sources we would want to name; a document's LDSN must be distinct from the LDSNs used for the <a href="http://dbpedia.org/resource/Topic" id="link-id10c020d0">subject matter concepts</a> and/or <a href="http://dbpedia.org/resource/Named_entity_recognition" id="link-ide7a0a58">named entities</a> associated with a document </li> <li> Use the RDF Data Model to express structure within your data source(s)</li> <li>Use LDSNs when constructing statements/claims/assertions/records (triples) inside your structured data sources</li> <li> When publishing Web Pages related to your data sources; use at least one of the following to methods to guide user agents to data sources associated with your published page; the HTML <a href="http://blogs.usnet.private:8893/RPC2" id="link-id12326c48">LINK tag</a>, <a href="http://dbpedia.org/resource/RDFa" id="link-id10751788">RDFa</a>, <a href="http://dbpedia.org/resource/GRDDL" id="link-id1050e290">GRDDL</a>, or <a href="http://dbpedia.org/resource/Content_negotiation" id="link-id12e930b0">Content Negotiation</a>. </li> </ul> <p>The items above are features that users and decision makers should start to hone into when seeking, and evaluating, platforms that facilitate cost-effective exploitation of the <a href="http://dbpedia.org/resource/Linked_Data" id="link-id11eca568">Linked Data</a> <a href="http://dbpedia.org/resource/Giant_Global_Graph" id="link-id109571c0">Web</a>.</p>
Kingsley Idehen
kidehen@openlinksw.com
2008-06-11T21:15:29.000-04:00
Reasoning Matters Contd
http://myopenlink.net/weblog/kidehen/?id=1738
2008-06-06T18:29:02Z
<p>I just stumbled across a post titled: <a href="http://clarkparsia.com/weblog/2008/06/06/why-reasoning-matters-consistency-checking/" id="link-id11003f00">Why Reasoning Matters: Consistency Checking</a> from <a href="http://clarkparsia.com/about" id="link-id137e8bc0">Clark and Parsia</a> </p> <p>As you can see from my recent post about how we've started the process of <a href="http://www.openlinksw.com/dataspace/kidehen@openlinksw.com/weblog/kidehen@openlinksw.com%27s%20BLOG%20%5B127%5D/1372" id="link-id100b7d20">inoculating DBpedia against the potential dangers of "contextual incoherence"</a>, we are entering a newer era in the <a href="http://dbpedia.org/resource/Semantic_Web" id="link-id106c35e0">Semantic Web</a>'s evolution. My post and the one from Clark & Parsia both touch different aspects of the "Data Dictionary" for the <a href="http://dbpedia.org/resource/Semantic_Web" id="link-id0x6e02e748">Semantic Web</a> issue.</p> <p>Note: in my universe of discourse, a Data Dictionary manifests when the constraints and class hierarchies defined in an ontology (e.g. a web accessible shared ontology) are functionally bound to a data manager. Interestingly the binding can take the following forms:</p> <ul> <li>Engine Hosted - which is what you get with <a href="http://docs.openlinksw.com:80/virtuoso/rdfsparqlrule.html#rdfsparqlruleintro" id="link-id105c4408">Virtuoso's in-built Inference Engine</a> </li> <li>External - which is what you get when the Inference Engine is a distinct component from the data manager (example: <a href="http://pellet.owldl.org/owlgres" id="link-id13fa37f8">Owlgres</a> which can sit in front of 3rd party <a href="http://dbpedia.org/resource/SPARQL" id="link-id107127e8">SPARQL</a> endpoints via ARQ)</li> </ul> <p>The classification terminology I use above is very much off-the-cuff, its sole purpose is architectural distinction.</p> <p>Anyway, it's really nice to see that we are entering an era re. the Semantic Web vision, where the virtues of reasoning are getting simpler to demonstrate and articulate.</p> <p>In a nutshell, the point-point data integration era is coming to an end! The era of intelligent ontology based enterprise data integration is nigh!</p> <p>Of course, there is much more to come on the practical utility front, so stay tuned as we work our way through the <a href="http://dbpedia.org/resource/DBpedia" id="link-id10424078">DBpedia</a> inoculation program.</p>
Kingsley Idehen
kidehen@openlinksw.com
2008-06-06T15:55:09.000-04:00
DBpedia receives shot #1 of CLASSiness vaccine
http://myopenlink.net/weblog/kidehen/?id=1737
2008-06-05T17:11:34Z
<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 data 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>define input:inference 'http://<a href="http://dbpedia.org/resource/DBpedia" id="link-id1022a158">dbpedia</a>.org/resource/inference/rules/yago#'<br /> PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#><br /> PREFIX <a href="http://dbpedia.org/resource/DBpedia" id="link-id0x19ee4c58">dbpedia</a>: <http://dbpedia.org/property/><br /> PREFIX yago: <http://dbpedia.org/class/yago/></p> <p>SELECT ?s<br /> FROM <http://dbpedia.org><br /> WHERE {<br /> ?s a yago:Publication106589574 .<br /> ?s dbpedia:name "The Lord of the Rings"@en .<br /> }</p> <p>-- Variant of query with <a href="http://virtuoso.openlinksw.com" id="link-id10870920">Virtuoso</a>'s Full Text Index extension: bif:contains</p> <p>define input:inference 'http://dbpedia.org/resource/inference/rules/yago#'<br /> PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#><br /> PREFIX dbpedia: <http://dbpedia.org/property/><br /> PREFIX yago: <http://dbpedia.org/class/yago/></p> <p>SELECT ?s ?n<br /> FROM <http://dbpedia.org><br /> WHERE {<br /> ?s a yago:Publication106589574 .<br /> ?s dbpedia:name ?n .<br /> ?n bif:contains 'Lord and Rings'<br /> }</p> <p>-- Retrieve all individuals instances of the Book Class<br /> PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#><br /> PREFIX dbpedia: <http://dbpedia.org/property/><br /> PREFIX yago: <http://dbpedia.org/class/yago/></p> <p>SELECT ?s ?n<br /> FROM <http://dbpedia.org><br /> WHERE {<br /> ?s a yago:Book106410904 .<br /> ?s dbpedia:name ?n .<br /> }</p> <p>-- Retrieve all individuals instances of Publication Class which should include all Books.<br /> define input:inference 'http://dbpedia.org/resource/inference/rules/yago#'<br /> PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#><br /> PREFIX dbpedia: <http://dbpedia.org/property/><br /> PREFIX yago: <http://dbpedia.org/class/yago/></p> <p>SELECT ?s ?n<br /> FROM <http://dbpedia.org><br /> WHERE {<br /> ?s a yago:Publication106589574 .<br /> ?s dbpedia:name ?n .<br /> }</p> <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>
Kingsley Idehen
kidehen@openlinksw.com
2008-06-05T23:25:18.000-04:00
1995
http://myopenlink.net/weblog/kidehen/?id=1736
2008-06-04T21:05:17Z
<p> <a href="http://vanirsystems.com/danielsblog/2008/06/04/1995/#comments" id="link-id10422580">1995</a>: "</p> <p>1995 (and the early 90’s) must have been a visionaries time of dreaming… most of their dreams are happening today.</p> <p>Watch <a href="http://dbpedia.org/resource/Steve_Jobs" id="link-id102d3868">Steve Jobs</a> (then of <a href="http://dbpedia.org/resource/NeXT" id="link-id13fa5140">NeXT</a>) discuss what he thinks will be popular in 1996 and beyond at <a href="http://dbpedia.org/resource/OpenStep" id="link-id10df20e0">OpenStep</a> Days 1995:</p> <ul> <li> <a href="http://uk.youtube.com/watch?v=odqojmB6C_Y" id="link-id103534a0">‘The Future of Objects, 3/5″ by Steve Jobs (YouTube Video)</a> </li> <li> <a href="http://uk.youtube.com/watch?v=j7WpcRReDlo" id="link-id13f31910">‘The Future of Objects, 4/5″ by Steve Jobs (YouTube Video)</a> </li> </ul> <p>Heres a spoiler:</p> <ul> <li>There is static web document publishing</li> <li>There is dynamic web document publishing</li> <li>People will want to buy things off the web: e-commerce</li> </ul> <p>The thing that OpenStep propose is:</p> <ul> <li> <a href="http://dbpedia.org/resource/WebObjects" id="link-id10762ed8">WebObjects</a>: an <a href="http://dbpedia.org/resource/Object-oriented_programming" id="link-id1107f680">Object Oriented</a> representation of Data available in distributed form over the web</li> </ul> <p>What Steve was suggesting was one of the beginnings of the <a href="http://dbpedia.org/resource/Data_Web" id="link-id1047b568">Data Web</a>! Yep, <a href="http://dbpedia.org/resource/Portable_Distributed_Objects" id="link-id105c5330">Portable Distributed Objects</a> and <a href="http://dbpedia.org/resource/Enterprise_Objects_Framework" id="link-id1006c850">Enterprise Objects Framework</a> was one of the influences of the <a href="http://dbpedia.org/resource/Semantic_Web" id="link-id143cf598">Semantic Web</a> / <a href="http://dbpedia.org/resource/Linked_Data" id="link-id1075c898">Linked Data</a> <a href="http://dbpedia.org/resource/Giant_Global_Graph" id="link-id0x5bd28ed0">Web</a>…. not surprising as <a href="http://www.w3.org/People/Berners-Lee/card#i" id="link-id10b56c80">Tim Berners-Lee</a> designed the initial web stack on a <a href="http://dbpedia.org/resource/NeXT" id="link-id105edcb0">NeXT</a> computer!</p> <p>I’m going to spend a little time this evening figuring out how much ‘distributed objects’ stuff has been taken from the OpenStep stuff into the Objective-<a href="http://dbpedia.org/resource/C_(programming_language)" id="link-id0x5da0e9b0">C</a> + Cocoa environment. (<- I guess I must be quite geeky ;-))</p>" <p>(Via <a href="http://vanirsystems.com/danielsblog" id="link-id1092ed90">Daniel Lewis</a>.)</p>
Kingsley Idehen
kidehen@openlinksw.com
2008-06-04T17:30:13.36000-04:00
Nice Presentation about Semantic Web by Nova Spivack
http://myopenlink.net/weblog/kidehen/?id=1735
2008-06-03T18:53:47Z
<p> <a href="http://thenextweb.org/2008/06/03/video-nova-spivack-making-sense-of-the-semantic-web/" id="link-id1046bfc8">Nova Spivack delivers a nice Semantic Web presentation</a> at <a href="http://2008.thenextweb.org/" id="link-idff1b7d8">NextWeb</a>. My only differences with Nova are:</p> <ul>-- Timeframe - I believe we are closer to 2020 than he envisages</ul> <ul>-- Business models - there are going to be new business models courtesy of the <a href="http://dbpedia.org/resource/Semantic_Web" id="link-id0x73aa8d90">Semantic Web</a> effect.</ul> <p>Anyway, enjoy!</p> <p>BTW - The only reason why the Semantic Web is perceived as complex relative to the original Document Web is simple this: The Semantic Web was designed in public view by the W3C and many collaborators, whereas the Document Web simply came into public view and consciousness as a somewhat finished solution.</p>
Kingsley Idehen
kidehen@openlinksw.com
2008-06-03T15:06:35.000-04:00
Web Evolution
http://myopenlink.net/weblog/kidehen/?id=1734
2008-05-26T14:51:59Z
<a href="http://yihongs-research.blogspot.com" id="link-id109b5500">Yihong Ding</a> has posted an interesting series of posts under the banner: <a href="http://feeds.feedburner.com/~r/ThinkingSpace/~3/297992608/revision-of-web-evolution-series.html" id="link-id130cb6e8">Web Evolution</a>. Post number 4 in the series covers: <a href="http://yihongs-research.blogspot.com/2007/08/mapping-between-web-evolution-and-human.html" id="link-id10275ec0">Web Evolution and Human Growth</a>. This particular post is orthogonal (related but independent) to some of my <a href="http://www.openlinksw.com/weblog/public/search.vspx?blogid=127&q=data%20web%20evolution&type=text&output=html" id="link-id10b1cf18">earlier posts about Web Evolution</a>.
Kingsley Idehen
kidehen@openlinksw.com
2008-05-26T20:04:29.000-04:00
Semantic Web Patterns: A Guide to Semantic Technologies (Update 1)
http://myopenlink.net/weblog/kidehen/?id=1732
2008-05-22T20:38:28Z
<p> <a href="http://www.readwriteweb.com" id="link-id11846528">ReadWriteWeb</a> via <a href="http://alexiskold.wordpress.com/" id="link-id154ae848">Alex Iskold</a> have delivered another iteration of their "Guide to Semantic Technologies". </p> <p>If you look at the title of this post (and <a href="http://feeds.feedburner.com/%7Er/readwriteweb/%7E3/257943334/semantic_web_patterns.php" id="link-id10a9a900">their article</a>) they seem to be accurately providing a guide to Semantic Technologies, so no qualms there. If on the other hand, this is supposed to he a guide to the "<a href="http://dbpedia.org/resource/Semantic_Web" id="link-id0x9276c438">Semantic Web</a>" as prescribed by <a href="http://www.w3.org/People/Berners-Lee/card#i" id="link-id0x44778ab8">TimBL</a> then they are completely missing the essence of the whole subject, and demonstrably so I may add, since the entities: "<a href="http://www.readwriteweb.com" id="link-id0x477a0f70">ReadWriteWeb</a>" and "<a href="http://www.linkedin.com/in/iskold" id="link-id0x42cb5900">Alex Iskold</a>" are only describable today via the attributes of the documents they publish i.e their respective blogs and hosted <a href="http://dbpedia.org/resource/Blog" id="link-id0x12e3c020">blog</a> posts. </p> <blockquote> <p>Preoccupation with Literal objects as describe above, implies we can only take what "ReadWriteWeb" and "Alex Iskold" say "Literally" (<a href="http://dbpedia/resource/Grep" id="link-id0x9a6b82e8">grep</a>, <a href="http://dbpedia.org/resource/regular_expression" id="link-id0x127fc818">regex</a>, and <a href="http://dbpedia.org/resource/XPath" id="link-id0x4603cef0">XPath</a>/<a href="http://dbpedia.org/resource/XQuery" id="link-id0x13cd7e20">Xquery</a> are the only tools for searching deeper in this Literal realm), we have no sense of what makes them tick or where they come from, no history (bar "About Page" blurb), no data connections beyond anchored text (more pointers to opaque data sources) in post and blogrolls. The only connection between this post and them is the my deliberate use of the same literal text in the Title of this post.</p> </blockquote> <p>TimBL's vision as espoused via the "Semantic Web" vision is about the production, consumption, and sharing of Data Objects via HTTP based Identifiers called URIs/IRIs (<a href="http://dbpedia.org/resource/Linked_Data" id="link-id0x12263ff0">Hyperdata</a> Links / <a href="http://dbpedia.org/resource/Linked_Data" id="link-id0x44dbc7b8">Linked Data</a>). It's how we use the Web as a <a href="http://dbpedia.org/resource/federated_database_system" id="link-id0x49f52aa8">Distributed Database</a> where (as <a href="http://www.cs.umd.edu/~hendler/2003/foaf.rdf#jhendler" id="link-id0x4e3aed58">Jim Hendler</a> once stated with immense clarity): I can point to records (<a href="http://dbpedia.org/resource/Entity" id="link-id0x1151c118">entity</a> instances) in your database (aka <a href="http://en.wikipedia.org/wiki/Data_Spaces" id="link-id0x54362618">Data Space</a>) from mine. Which is to say that if we can all point to data entities/objects (not just data entities of type "Document") using these Location, Value, and Structure independent Object Identifiers (courtesy of HTTP) we end up with a much more powerful Web, and one that is closer to the "Federated and Open" nature of the Web.</p> <p>As I stated in a prior post, if you or your platform of choice aren't producing de-referencable URIs for your data objects, you may be Semantic (this data model predates the Web), but there is no "<a href="http://dbpedia.org/resource/World_Wide_Web" id="link-id0x40c66ff8">World Wide Web</a>" in what you are doing.</p> <h2>What are the Benefits of the Semantic Web?</h2> <ul> <strong>Consumer</strong> - "Discovery of relevant things" and be being "Discovered by relevant things" (people, places, events, and other things)</ul> <ul> <strong>Enterprise</strong> - ditto plus the addition of enterprise domain specific things such as market opportunities, product portfolios, human resources, partners, customers, competitors, co-opetitors, acquisition targets, new regulation etc..)</ul> <h2>Simple demo:</h2> <blockquote> <p>I am a <a href="http://myopenlink.net/dataspace/person/kidehen#this" id="link-id0x43281bb8">Kingsley Idehen</a>, a Person who authors <a href="http://www.openlinksw.com/blog/~kidehen" id="link-id0xa166e098">this weblog</a>. I also share bookmarks gathered over the years across an array of subjects via <a href="http://myopenlink.net/dataspace/kidehen/bookmark/KingsleyBookmarks" id="link-id0x46357778">my bookmark data space</a>. I also subscribe to a number of RSS/Atom/RDF feeds, which I share via my feeds subscription data space. Of course, all of these data sources have Tags which are collectively exposed via my <a href="http://myopenlink.net/dataspace/kidehen/weblog/MyBlogDataSpace/tagcloud" id="link-id0x4e49e8c0">weblog tag-cloud</a>, feeds subscriptions <a href="http://dbpedia.org/resource/Tag" id="link-id0x11d6ade8">tag</a>-cloud, and <a href="http://myopenlink.net/dataspace/kidehen/bookmark/KingsleyBookmarks/tagcloud" id="link-id0x43a21998">bookmarks tag-cloud</a> data spaces.</p> <p>As I don't like repeating myself, and I hate wasting my time or the time of others, I simply share <a href="http://myopenlink.net/dataspace/kidehen" id="link-id0x53db17e8">my Data Space</a> (a collection of all of my purpose specific data spaces) via the Web so that others (friends, family, employees, partners, customers, project collaborators, competitors, co-opetitors etc.) can can intentionally or serendipitously discover relevant data en route to creating new <a href="http://dbpedia.org/resource/Information" id="link-id0x10f5be40">information</a> (perspectives) that is hopefully exposed others via the Web.</p> </blockquote> <p>Bottom-line, the Semantic Web is about adding the missing "Open Data Access & Connectivity" feature to the current Document Web (we have to beyond regex, grep, xpath, xquery, <a href="http://dbpedia.org/resource/Full_text_search" id="link-id0xf5667b0">full text search</a>, and other literal scrapping approaches). The Linked Data <a href="http://dbpedia.org/resource/Giant_Global_Graph" id="link-id0x477a9e00">Web</a> of de-referencable data object URIs is the critical foundation layer that makes this feasible.</p> <p> Remember, It's not about "Applications" it's about Data and actually freeing Data from the "tyranny of Applications". Unfortunately, application inadvertently always create silos (esp. on the Web) since entity data modeling, open data access, and other database technology realm matters, remain of secondary interest to many application developers.</p> <p>Final comment, RDF facilitates Linked Data on the Web, but all RDF isn't endowed with de-referencable URIs (a major source of confusion and misunderstanding). Thus, you can have RDF Data Source Providers that simply project RDF data silos via Web Services APIs if RDF output emanating from a Web Service doesn't provide out-bound pathways to other data via de-referencable URIs. Of course the same also applies to Widgets that present you with all the things they've discovered without exposing de-referencable URIs for each item.</p> <p>BTW - my final comments above aren't in anyway incongruent with devising successful business models for the Web. As you may or may not know, OpenLink is not only a major platform provider for the Semantic Web (expressed in our UDA, <a href="http://virtuoso.openlinksw.com" id="link-id0x92fe2ad8">Virtuoso</a>, <a href="http://dbpedia.org/resource/OpenLink_Data_Spaces" id="link-id0x4320d7b0">OpenLink Data Spaces</a>, and OAT products), we are also actively seeding Semantic Web (tribe: Linked Data of course) startups. For instance, <a href="http://zitgist.com/about/" id="link-id0x4997a5a0">Zitgist</a>, which now has <a href="http://community.linkeddata.org/dataspace/person/mkbergman#this" id="link-id0x546feaa8">Mike Bergman</a> as it's CEO alongside <a href="http://fgiasson.com/me/" id="link-id0x541487d8">Frederick Giasson</a> as CTO. Of course, I cannot do Zitgist justice via a footnote in a blog post, so I will expand further in a separate post.</p> <h2>Additional information about this blog post:</h2> <ol> <li> I didn't spent hours looking for URIs used in my hyperlinks </li> <li> The post is best viewed via an RDF Linked Data aware user agents (<a href="http://demo.openlinksw.com/rdfbrowser" id="link-id0x8d15bb70">OpenLink RDF Browser</a>, Zitgist <a href="http://dataviewer.zitgist.com" id="link-id0x4d0aa320">Data Viewer</a>, <a href="http://www4.wiwiss.fu-berlin.de/rdf_browser" id="link-id0x472c4568">DISCO Hyperdata Browser</a>, <a href="http://dig.csail.mit.edu/2005/ajar/release/tabulator/0.8/tab.html" id="link-id0x43aaa2e0">Tabulator</a>).</li> </ol>
Kingsley Idehen
kidehen@openlinksw.com
2008-07-16T22:02:33.000-04:00