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	<title>sparql &amp;laquo; WordPress.com Tag Feed</title>
	<link>http://wordpress.com/tag/sparql/</link>
	<description>Feed of posts on WordPress.com tagged "sparql"</description>
	<pubDate>Sat, 26 Jul 2008 21:55:10 +0000</pubDate>

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<title><![CDATA[Vlog Peninsula 2: Airport Thoughts]]></title>
<link>http://gamaludy.wordpress.com/2008/07/26/vlog-peninsula-2-airport-thoughts/</link>
<pubDate>Sat, 26 Jul 2008 11:53:53 +0000</pubDate>
<dc:creator>gamaludy</dc:creator>
<guid>http://gamaludy.wordpress.com/2008/07/26/vlog-peninsula-2-airport-thoughts/</guid>
<description><![CDATA[[Tribe Your Tell the truth Video» incorporating the Ipswich Camcorder Tie in with] Abaft the flat ne]]></description>
<content:encoded><![CDATA[<p>[Tribe Your Tell the truth Video» incorporating the Ipswich Camcorder Tie in with] Abaft the flat nervousness and on the double roads make a pilgrimage, Breath did reply to the airport, at the last&#8221;¦   (WMV 0:54 2.1MB)...</br>Magisterial of the blood posts barring Technorati and Google.</br></br></br></br></br>[Genre Your In store Video» incorporating the Ipswich Camcorder Steelie] Vlog Landmass 3: Far out Emergence:  She pack away&#146;t prefigure yourself. This is my parallel octaves videoblog everywhere VlogEurope 2005 and Me house&#146;t flatten got there though  IMG:)       IMG   (WMV 2:19 6MB)    </br></br></br></br></br></br>[Dltq.blogs.com] DLTQ.vlog: politicalvideoblogging: Firstly, Anima hope step till videoblog during the assister in order to Belarus. Swish Friday the thirteenth  blog-posts noted the caste"politicalvideoblogging"  </br></br></br></br> [Ourmedia.org] Flickr &#124; Ourmedia: There is a inferior alone swelling mold in relation to vloggers who say that videoblogging transforms the Internet into a brush open arms which homefolks disemploy communicate with audiovisually upon inmost video posts and globally meshes next to ancestry precisely as things go in consideration of conceptualize ancillary alien programming and constituents not controlled after subject circumfusion networks canary WATS outlets. These practices rise up online convection.  Video prison still come uploaded up to a moblog. </br>Reflected tags herewith Technorati: Blog, Videoblog, Raptorial Video Communique</p>
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<title><![CDATA[Buzzwords of semantic web]]></title>
<link>http://ndotnanda.wordpress.com/?p=3</link>
<pubDate>Thu, 26 Jun 2008 12:28:02 +0000</pubDate>
<dc:creator>ndotnanda</dc:creator>
<guid>http://ndotnanda.wordpress.com/?p=3</guid>
<description><![CDATA[Since 2000, people are talking much about semantic web, web 2, web 3 .. what are the buzzwords behin]]></description>
<content:encoded><![CDATA[<p>Since 2000, people are talking much about semantic web, web 2, web 3 .. what are the buzzwords behind the semantic web ?</p>
<p><strong>semantic web</strong> - a meaning of web by the web itself. Making the web understandable by machines.</p>
<p><strong>RDF </strong>-Â  Resource Description Framework - W3C Standards to descripe anything in semantic web - it is an <strong>XML </strong>- RDF is a directed, labeled graph data format for representing information      in the Web</p>
<p><strong>FOAF </strong>- Friend Of A Friend - W3C standards to describe people &#38; networks, the links between them and the things they create and do</p>
<p><strong>SIOC </strong>- Semantically interconnected Online Communities -Â   a Semantic Web <a href="http://rdfs.org/sioc/spec/">ontology</a> for representing rich data from the Social Web in RDF</p>
<p><strong>OWL </strong>- Web Ontology Language (Ontology - representation of a set of concepts within a domain and the relationships between them) - it is a family of ontologies to describe semantic web - OWL ontologies are most commonly serialized using RDF/XML syntax</p>
<p><strong>SPARQL </strong>- SPARQL Protocol and RDF Query Language , is an RDF query language</p>
<p>Linked Open Data - is a community lead effort to create openly accessible, and interlinked, RDF Data on the Web</p>
<p><strong>APML </strong>- allows users to share their own personal Attention Profile</p>
<p><strong>Attention Profile</strong> - A profile that have build with a combination of your Semantic data</p>
<p><strong>Open ID </strong>- open decentralized ID system that provides single access to the web</p>
<p><strong>OAuth </strong>- OAuth is a simple way to publish and interact with protected data. It's also a safer and more secure way for people to give you access.</p>
<p><strong>Single Sign ON (SS0)</strong> -Â  a secured authentication for over the web.</p>
<p><strong>Data Portability</strong> - a mixing of open standars inclucing RDF,OPML,Micro formats,APML,OpenID ..</p>
<p><strong>Microformats </strong>- Designed for humans first and machines second, microformats are a set of simple, open data formats built upon existing and widely adopted standards</p>
<p><strong>NLP</strong> - Natural Language Processing -Â  handling human languages</p>
<p><span style="text-decoration:underline;"><strong>Some Buzz Applications :</strong></span></p>
<p>know3 - http://www.know3.com</p>
<p>Twine - http://www.twine.com</p>
<p>powerset - http://www.powerset.com</p>
<p>Yahoo Search Monkey</p>
<p>DBpedia</p>
<p>freebase</p>
<p>radarnetworks</p>
<p>trueknowledge.com</p>
<p>talis platform</p>
<p>opencalais</p>
<p>Data Portability.org</p>
<p>zemanta.com</p>
<p>Add more applications &#38; buzzwords &#38; comments to make this a library for beginners .. thanks for reading this..</p>
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<title><![CDATA[Consulta DBPedia]]></title>
<link>http://sheilamendez.wordpress.com/?p=6</link>
<pubDate>Sun, 22 Jun 2008 11:05:45 +0000</pubDate>
<dc:creator>sheilamendez</dc:creator>
<guid>http://sheilamendez.wordpress.com/?p=6</guid>
<description><![CDATA[He realizado una pequeÃ±a consulta SPARQL a la DBPedia, donde se encuentran gran parte de los conten]]></description>
<content:encoded><![CDATA[<p>He realizado una pequeÃ±a consulta SPARQL a la <a title="DBPedia" href="http://dbpedia.org" target="_blank">DBPedia</a>, donde se encuentran gran parte de los contenidos de la <a title="Wikipedia" href="http://es.wikipedia.org/wiki/Portada" target="_blank">Wikipedia</a> etiquetados en RDF, como ejercicio para la asignatura <a title="Asignatura Nuebos Avances en Web SemÃ¡ntica" href="http://www.di.uniovi.es/~labra/cursos/MIW/WebSemantica/" target="_blank">Nuevos Avances en Web SemÃ¡ntica</a>. SPARQL es un lenguaje de consulta para RDF que funciona por encaje de patrones (sujeto, predicado y objeto). Hay una <a title="Guï¿½a de referencia SPARQL" href="http://www.dajobe.org/2005/04-sparql/SPARQLreference-1.8.pdf" target="_blank">guÃ­a de referencia de SPARQL</a> tanto de sintaxis, patrones, etc.</p>
<p>La consulta realizada sobre <a title="DBPedia" href="http://dbpedia.org" target="_blank">DBPedia</a>, selecciona escritores espaÃ±oles, su lugar de nacimiento, sus obras, su pÃ¡gina web y una fotografÃ­a. El cÃ³digo es el siguiente (puede probarse con <a title="SNORQL" href="http://dbpedia.org/snorql/" target="_blank">SNORQL</a>, un editor SPARQL):</p>
<p class="MsoNormal" style="line-height:normal;margin:0 0 0.0001pt 18pt;"><span style="font-size:8pt;">SELECT DISTINCT ?escritor ?nombre ?lugar ?obra ?website ?foto </span></p>
<p class="MsoNormal" style="line-height:normal;margin:0 0 0.0001pt 18pt;"><span style="font-size:8pt;">WHERE {</span></p>
<p class="MsoNormal" style="line-height:normal;margin:0 0 0.0001pt 18pt;"><span style="font-size:8pt;"> </span></p>
<p class="MsoNormal" style="line-height:normal;margin:0 0 0.0001pt 18pt;"><span style="font-size:8pt;"><span> </span>?escritor skos:subject &#60;http://dbpedia.org/resource/Category:Spanish_writers&#62; .</span></p>
<p class="MsoNormal" style="line-height:normal;margin:0 0 0.0001pt 18pt;"><span style="font-size:8pt;"><span> </span>?escritor rdfs:label ?nombre .</span></p>
<p class="MsoNormal" style="line-height:normal;margin:0 0 0.0001pt 18pt;"><span style="font-size:8pt;"><span> </span>?escritor foaf:depiction ?foto .</span></p>
<p class="MsoNormal" style="line-height:normal;margin:0 0 0.0001pt 18pt;"><span style="font-size:8pt;"><span> </span>?escritor &#60;http://dbpedia.org/property/birthPlace&#62; ?lugar .</span></p>
<p class="MsoNormal" style="line-height:normal;margin:0 0 0.0001pt 18pt;"><span style="font-size:8pt;"><span> </span></span></p>
<p class="MsoNormal" style="line-height:normal;margin:0 0 0.0001pt 18pt;"><span style="font-size:8pt;">OPTIONAL{</span></p>
<p class="MsoNormal" style="line-height:normal;margin:0 0 0.0001pt 18pt;"><span style="font-size:8pt;"><span> </span>?escritor foaf:homepage ?website .</span></p>
<p class="MsoNormal" style="line-height:normal;margin:0 0 0.0001pt 18pt;"><span style="font-size:8pt;">}</span></p>
<p class="MsoNormal" style="line-height:normal;margin:0 0 0.0001pt 18pt;"><span style="font-size:8pt;">OPTIONAL{</span></p>
<p class="MsoNormal" style="line-height:normal;margin:0 0 0.0001pt 18pt;"><span style="font-size:8pt;"><span> </span>?obra dbpedia2:writer ?escritor .</span></p>
<p class="MsoNormal" style="line-height:normal;margin:0 0 0.0001pt 18pt;"><span style="font-size:8pt;">}</span></p>
<p class="MsoNormal" style="line-height:normal;margin:0 0 0.0001pt 18pt;"><span style="font-size:8pt;">FILTER (LANG(?nombre) = 'es') .</span></p>
<p class="MsoNormal" style="line-height:normal;margin:0 0 0.0001pt 18pt;"><span style="font-size:8pt;">}</span></p>
<p class="MsoNormal" style="line-height:normal;margin:0 0 0.0001pt 18pt;">
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<item>
<title><![CDATA[L'absence de preuves n'est pas la preuve de l'absence]]></title>
<link>http://mondeca.wordpress.com/?p=95</link>
<pubDate>Sat, 24 May 2008 12:30:39 +0000</pubDate>
<dc:creator>Thomas Francart</dc:creator>
<guid>http://mondeca.wordpress.com/?p=95</guid>
<description><![CDATA[Qu&#8217;on en commun la recherche de la vie extra-terrestre et la recherche des armes de destructio]]></description>
<content:encoded><![CDATA[<p>Qu'on en commun la recherche de la vie extra-terrestre et la recherche des armes de destruction massive en Irak ?</p>
<p>Elles supposent toutes les deux que le monde est ouvert, et que ce n'est pas parce qu'on n'a rien trouvÃ© qu'il n'y a rien; dans l'un et l'autre cas, l'absence de preuve n'est pas la preuve de l'absence(*).</p>
<p>Dans le monde ouvert des recherches sur le "web of data", hÃ© bien c'est pareil.</p>
<p><!--more--></p>
<p>Si vous travaillez sur un ensemble de donnÃ©es sur un domaine, rien ne vous dit que quelqu'un, quelque part, n'a pas publiÃ© des donnÃ©es qui complÃ¨tent, voire contredisent, les vÃ´tres.<br />
Le cas d'utilisation que nous avons est le suivant : nous avons les donnÃ©es de jour de fermeture des Ã©quipements touristiques (musÃ©es, attractions, etc.), par exemple :</p>
<pre>:WidgetMuseumÂ Â  :openingPeriodÂ Â  _:p1
_:p1Â Â Â Â Â  :beginsÂ Â Â Â  2008-03-01
_:p1Â Â Â Â Â  :endsÂ Â Â Â Â Â Â  2008-10-31
_:p1Â Â Â Â Â  :closingDayÂ Â Â Â Â  :Tuesday
_:p1Â Â Â Â Â  :closingDayÂ Â Â Â Â  :Sunday</pre>
<p>Pouvons-nous en dÃ©duire, dans un monde ouvert, que les jours d'ouverture sont lundi, mercredi, jeudi, vendredi et samedi ?<br />
Non. Pour cela il faut lever cette assomption, en dÃ©clarant dans l'ontologie que tous les jours qui ne sont pas fermÃ©s sont ouverts. Ou alors, cette dÃ©duction peut se faire par une nÃ©gation en SPARQL, en utilisant <a href="http://www.w3.org/TR/rdf-sparql-query/#func-bound" target="_blank">cette astuce</a> :</p>
<pre>CONSTRUCT { ?s :openingDay ?dayofweek }
WHERE
Â  {
Â Â Â  :WidgetMuseumÂ Â  :openingPeriod ?s
Â Â Â  ?s :begins 2008-03-01 .
Â Â Â  ?s :endsÂ Â Â Â Â Â Â  2008-10-31 .
Â Â Â  ?dayofwee a somedictionary:dayOfWeek .
<span style="color:#0000ff;">Â Â Â  OPTIONAL { ?s2 :closingDay ?dayofweek . FILTER (?s2 = ?s) }</span>
<span style="color:#0000ff;">Â Â Â  FILTER (!bound (?s2))</span>
Â  }</pre>
<p>Je construis "s est un jour d'ouverture" si je ne trouve aucun s2 tel que s2 est un jour de fermeture et s2 = s (le truc difficile Ã  apprÃ©hender ici est le fait d'utiliser une variable s2 diffÃ©rente de s, mais en disant que s2 = s. Si on utilisait directement s, s serait toujours "bindÃ©e", puisque les statements qui sont avant la clause optionnelle peuvent trÃ¨s bien renvoyer une rÃ©ponse Ã  eux tout seul).</p>
<p>Maintenant, serait-il possible d'Ã©liminer l'assomption que quelqu'un, quelque part, ait pu publier de la donnÃ©e complÃ©mentaire/contradictoire avec la mienne ? pourquoi ne pas imaginer un systÃ¨me qui serait capable d'interroger l'intÃ©gralitÃ© des donnÃ©es publiÃ©es sur le web ? si un tel systÃ¨me existait, cela Ã©liminerait du coup l'assomption du monde ouvert; quel serait alors l'architecture d'un tel systÃ¨me ? grosso modo, cela pourrait Ãªtre soit :</p>
<ul>
<li>Un "google du web of data", un super index de toutes les donnÃ©es RDF publiÃ©es sur le web; une super base de connaissances planÃ©taire, en somme;</li>
<li>Une architecture dÃ©centralisÃ©e, Ã  base d'agents dÃ©tenant chacun un bout de rÃ©seau de connaissances, Ã©tant capables de discuter entre eux, de savoir quel agent dÃ©tient quel type de donnÃ©e, Ã  base d'annuaires, de rediriger les requÃªtes vers tel autre agent, etc.</li>
</ul>
<p>Si la premiÃ¨re solution semble d'un point de vue ingÃ©nierie la plus directe, sa centralisation (logique) pose tout de mÃªme question; la seconde solution se rapprocherait plus de la philosophie du web, et si elle est plus floue en terme de mise en Å“uvre, elle n'en reste sans doute pas moins valable.<br />
(autre chose un peu annexe : une fois l'ensemble des donnÃ©es publiÃ©es interrogeables, quid du "data-rank", un algorithme de classement des rÃ©sultats d'une recherche inspirÃ© du "page-rank" ?)<br />
Et vous, qu'en pensez-vous ?</p>
<p>______<br />
(*) : Pour la formidable citation de Rumsfeld sur la justification de la guerre en Irak, voir <a href="http://www.unabstract.net/concept.php?id=10387" target="_blank">ici</a>. Et pour la recherche de la vie extra-terrestre, voir <a href="http://fr.wikipedia.org/wiki/Paradoxe_de_Fermi" target="_blank">lÃ </a>.</p>
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<title><![CDATA[DAWG testcases]]></title>
<link>http://nunoalexandrelopes.wordpress.com/?p=19</link>
<pubDate>Thu, 22 May 2008 19:50:32 +0000</pubDate>
<dc:creator>Nuno Lopes</dc:creator>
<guid>http://nunoalexandrelopes.wordpress.com/?p=19</guid>
<description><![CDATA[The Data Access Working Group Testecases contain 440 SPARQL queries that can be used to test SPARQL ]]></description>
<content:encoded><![CDATA[<p>The <a href="http://www.w3.org/2001/sw/DataAccess/tests/r2">Data Access Working Group Testecases</a> contain 440 SPARQL queries that can be used to test <a href="http://www.w3.org/TR/rdf-sparql-query/">SPARQL</a> implementations.  The DLVHEX SPARQL plugin got 216 wrong!  I wonder how many the SPARQL XPTO parser would get right. :-D</p>
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