Hi all
I worked on this with Daniel for a while and the framework cannot handle
such fine-grained information in all cases.
My idea was to add an optional property in the dateInterval mapping with a
boolean range.
It will produce an extra triple that will be true if "present" exists or
false otherwise.
This will handle the one year ranges too since it will produce a false
statement. I am not sure about the - - ones we'll have to check the regex
What do you think?
On Mon, Jul 22, 2013 at 12:43 PM, Daniel Gerber <
[email protected]> wrote:
> 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
>
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Kontokostas Dimitris
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