This is with plenty of data, by the way.
On Thu, May 8, 2014 at 2:30 PM, Walrus theCat <[email protected]>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) >
