Re: getting NPE from CrossValidator in 1.6

[Jörn Kottmann]

Hello,

can you post the entire output you get from OpenNLP?
Are you using the command line interface?

Jörn

On 05/13/2014 02:25 AM, Walrus theCat wrote:

This is with plenty of data, by the way.


On Thu, May 8, 2014 at 2:30 PM, Walrus theCat <walrusthe...@gmail.com>wrote:

Hi,

The CrossValidator is hitting a NPE in a pretty standard use case.  I
traced it through, and, when cross-validating, DataIndexer.getContexts is
returning null (and thus, the call to contexts.length is throwing the
exception.)  What can I do here?

Thanks,

Walrus theCat

Exception in thread "main" java.lang.NullPointerException
     at opennlp.tools.ml.maxent.GISTrainer.trainModel(GISTrainer.java:264)
     at opennlp.tools.ml.maxent.GIS.trainModel(GIS.java:298)
     at opennlp.tools.ml.maxent.GIS.doTrain(GIS.java:83)
     at opennlp.tools.ml.maxent.GIS.doTrain(GIS.java:36)
     at
opennlp.tools.ml.AbstractEventTrainer.train(AbstractEventTrainer.java:93)
     at opennlp.tools.namefind.NameFinderME.train(NameFinderME.java:410)
     at opennlp.tools.namefind.NameFinderME.train(NameFinderME.java:472)
     at
opennlp.tools.namefind.TokenNameFinderCrossValidator.evaluate(TokenNameFinderCrossValidator.java:225)
     at precyse.ml.ner.TrainNERModels$.getResults(TrainNERModels.scala:153)
     at
precyse.ml.ner.TrainNERModels$$anonfun$main$3.apply(TrainNERModels.scala:58)
     at
precyse.ml.ner.TrainNERModels$$anonfun$main$3.apply(TrainNERModels.scala:53)
     at
scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:60)
     at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:47)
     at initech.ml.ner.TrainNERModels$.main(TrainNERModels.scala:53)
     at initech.ml.ner.TrainNERModels.main(TrainNERModels.scala)