Hi all, I recently started to extract temporal information from dbpedia (with the help of Dimitris). In particular I looked at basketball players [1] and the time periods they played for a certain team and politicians [2] who led a country or an office for a time period. The problem with this extraction now is, that I don't know how to model fact's that express an ongoing relationship with e.g. a (basketball) player and a team:
Tim Duncan 1997–present San Antonio Spurs // note that sometimes "present" is used and sometimes "--" represents an open interval Arjen Robben 2009-- Bayern Munich A typical extraction now would look like this [3]: <tim_duncan> <termPeriod> <tim_duncan_1> <tim_duncan_1> <starts> "1997" <tim_duncan_1> <ends> "2000" (let's pretend this is true) <tim_duncan_1> <san_antonio_spurs> Now I could infer that a relationship is ongoing if it has no end date. But some wikipedia pages use only one year as start as end date, like: Tim Duncan 1997 San Antonio Spurs (1997 start as well as end date) So the question remains on how do I know if this is ongoing. Is there already a time concept for NOW/PRESENT? Could we add a triple like: <tim_duncan_1> <isOngoing> "true/false" Any ideas are kindly appreciated! Cheers, Daniel [1] http://mappings.dbpedia.org/index.php/Mapping_en:Infobox_basketball_biography [2] http://mappings.dbpedia.org/index.php/Mapping_en:Infobox_officeholder [3] http://mappings.dbpedia.org/server/mappings/en/extractionSamples/Mapping_en:Infobox_basketball_biography ------------------------------------------------------------------------------ See everything from the browser to the database with AppDynamics Get end-to-end visibility with application monitoring from AppDynamics Isolate bottlenecks and diagnose root cause in seconds. Start your free trial of AppDynamics Pro today! http://pubads.g.doubleclick.net/gampad/clk?id=48808831&iu=/4140/ostg.clktrk _______________________________________________ Dbpedia-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/dbpedia-developers
