Can you show us your extraction.properties? I suspect you forgot the line
below?
languages=nl
I am also not sure if you should have fully qualified
(org.dbpedia.extraction.mappings.DisambiguationExtractor) or just the class
name (DisambiguationExtractor).
Cheers,
Pablo
On Fri, Jun 15, 2012 at 1:43 PM, Meij, L.K. van der
<[email protected]>wrote:
>
> I am trying to set up dbpedia-spotlight for the Dutch language. There are
> some datasets available for Dutch (nl),
> but I expect to at least need the dbpedia "disambiguation" dataset, which
> is not available for download.
>
> After setting up extraction_framework for "nl" and doing :
> editing extraction.properties: reoving all extractors.** except:
> extractors.nl
> =MappingExtractor,org.dbpedia.extraction.mappings.DisambiguationExtractor,HomepageExtractor,ImageExtractor,\
> InterLanguageLinksExtractor)
>
> $ cd dump;mvn scala:run
> I get an error message:
> ..
> INFO: Mappings loaded (nl)
> java.lang.reflect.InvocationTargetException
> ..
> Caused by: java.util.NoSuchElementException: key not found: nl
> at scala.collection.MapLike$class.default(MapLike.scala:225)
> at scala.collection.immutable.HashMap.default(HashMap.scala:38)
> at scala.collection.MapLike$class.apply(MapLike.scala:135)
> at scala.collection.immutable.HashMap.apply(HashMap.scala:38)
> at
> org.dbpedia.extraction.mappings.DisambiguationExtractor.<init>(DisambiguationExtractor.scala:22)
>
> I assume this means that some classes have not been implemented for "nl"?
>
> If so, I would like to know if such an effort is on the way or whether
> it would be feasible for me to give it a try?
> Is there some pointer/documentation on how to get started?
>
> Thanks,
>
> Lourens
>
>
> ==================
> DETAILS OF WHAT I DID
>
>
> I managed to install the extraction_framework. The documentation seems a
> bit out of date though so it could be I
> did things wrong.
> I managed to download the "nl" wikipedia input by editing dump.properties
> and doing
> $ cd dump; mvn scala:run -Dlauncher=download
> *
> *
> *Extraction started when* commenting out all
> other "extraction.**=" entries in dump/extraction.properties leaving only
>
> extractors.nl=MappingExtractor
>
> and running
>
> $ mvn scala:run
> The output indicates that extraction proceeds nicely.
>
> But I expect that in the result the "disambiguation" result will be
> missing.
>
> When I replace extractors.nl (analoguous to other languages):
>
> extractors.nl
> =MappingExtractor,org.dbpedia.extraction.mappings.DisambiguationExtractor,HomepageExtractor,ImageExtractor,\
> InterLanguageLinksExtractor
>
> I get error messages mentioned above.
>
>
>
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