Hi all, One year later I am hitting this issue again (see quoted email below for reference).
Since last time it is now possible to improve the mappings using http://mappings.dbpedia.org . However I could not find how SKOS category information is extracted from there. Maybe the SKOS mapping logic is hardcoded in the extractor? To recap, the piece of data I am looking for is the link between a SKOS topic such as http://dbpedia.org/resource/Category:Arts and the DBpedia resource that is matching the primary Wikipedia article of the category, in that case http://dbpedia.org/resource/The_arts . The Wikipedia makes this information explicitly available by the use of the template "Cat_main". For instance, the source of http:/en.wikipedia.org/wiki/Category:Arts includes the following snippet (generally at the beginning): {{Cat main|The arts}} It seems to be widely used for any category that has a real world semantic interpretation (not just for the sake of Wikipedia housekeeping): http://en.wikipedia.org/w/index.php?title=Special:WhatLinksHere/Template:Cat_main&limit=500 So my question is: is it possible to write a mapping for this using http://mappings.dbpedia.org ? If so which directive should I use and which target property should I map the relation too? Best, 2010/4/16 Olivier Grisel <[email protected]>: > Hello, > > I am planning to train topic models to recognize text content and find > the most related skos:Concept from DBpedia. > However most of the time the dbpedia nodes for categories / > skos:Concept are less informative than the resource assiocated with > the main article of the afore mentionned category in wikipedia. > > Let's take an example, the category "History" is available as a > skos:Concept in dbpedia as: > > - http://dbpedia.org/resource/Category:History > > It matches the following category page in wikipedia: > > - http://en.wikipedia.org/wiki/Category:History > > On that page you can see the text: > > The main article for this category is History. > > Which is a link to the following wikipedia page: > > - http://en.wikipedia.org/wiki/History > > Which has the following RDF resource in DBpedia: > > - http://dbpedia.org/resource/History > > However the relationship: > > http://dbpedia.org/resource/History [is the main resource for concept] > http://dbpedia.org/resource/Category:History > > is not directly available in the DBpedia graph. > > So my questions are: > > 1- Is it safe to assume that for any > http://dbpedia.org/page/Category:XXX skos:Concept I can find more data > in the matching http://dbpedia.org/resource/XXX resource? > > 2- Is there a plan to make that relationship more explicit? > > Regards, > > -- > Olivier > http://twitter.com/ogrisel - http://code.oliviergrisel.name > -- Olivier http://twitter.com/ogrisel - http://github.com/ogrisel ------------------------------------------------------------------------------ Magic Quadrant for Content-Aware Data Loss Prevention Research study explores the data loss prevention market. Includes in-depth analysis on the changes within the DLP market, and the criteria used to evaluate the strengths and weaknesses of these DLP solutions. http://www.accelacomm.com/jaw/sfnl/114/51385063/ _______________________________________________ Dbpedia-discussion mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion
