Rupert Westenthaler created STANBOL-1422:
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Summary: Add support for ixa-nerc NER models
Key: STANBOL-1422
URL: https://issues.apache.org/jira/browse/STANBOL-1422
Project: Stanbol
Issue Type: Bug
Reporter: Rupert Westenthaler
Assignee: Rupert Westenthaler
The ixa-pipe-nec [1] provides good quality Named Entity Recognition models for
English, Spanish, Dutch, German and Italian. However to use those models one
needs
* OpenNLP 1.6.0
* OpenNLP extensions provided by the ixa-pipe-nec module.
OpenNLP 1.6.0 is not yet released so we will need to go with a SNAPSHOT version
for now. The ixa-pipe-nec module does not support OSGI. So we will need to
embed the required classes into a bundle and provide a bundle activator that
registers the extensions as OSGI services (with the metadata expected by
OpenNLP).
NOTE: This issue will only cover extensions to Apache Stanbol so that one cane
use the provided models. To use the models Users will need to download the
~700Mbyte archive linked on [1] get the OpenNLP modles (*.bin files) and put
them into datafiles folder of Apache Stanbol.
The models use PER, ORG, LOC and MISC as types. So using a configuration for
the CustomNERModelEnhancementEngine should do the trick:
{code}
# Configuration of
org.apache.stanbol.enhancer.engines.opennlp.impl.CustomNERModelEnhancementEngine-ixa_nec.config
stanbol.engines.opennlp-ner.typeMappings=["PER\ >\
http://dbpedia.org/ontology/Person","ORG\ >\
http://dbpedia.org/ontology/Organisation","LOC\ >\
http://dbpedia.org/ontology/Place","MISC\ >\ skos:Concept"]
stanbol.enhancer.engine.name="ixa-nerc"
stanbol.engines.opennlp-ner.nameFinderModels=["de-clusters-dictlbj-conll03.bin","en-91-18-4-class-muc7-conll03-ontonotes-4.0.bin","es-clusters-dictlbj-conll02.bin","it-clusters-evalita09.bin","nl-clusters-dictlbj-conll02.bin","eu-clusters-egunkaria.bin"]
{code}
The names of the OpenNLP model files are the values of the
{{stanbol.engines.opennlp-ner.nameFinderModels}} property. You will find those
files in the NERC-Models 1.5.0 file. See the documentation on [1] for more
details and other options.
[1] https://github.com/ixa-ehu/ixa-pipe-nerc/
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