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<http://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out of date though so it could be I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<http://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<http://extractors.nl> (analoguous to other
languages):
extractors.nl<http://extractors.nl>=MappingExtractor,org.dbpedia.extraction.mappings.DisambiguationExtractor,HomepageExtractor,ImageExtractor,\
InterLanguageLinksExtractor
I get error messages mentioned above.
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