Model training error

[Ninaad Joshi]

Hi,

i am trying to train a job title model with a training data file. But, when
i try to train, i get the following error:

Exception in thread "main" java.lang.IllegalArgumentException: Model not
compatible with name finder!
    at
opennlp.tools.namefind.TokenNameFinderModel.<init>(TokenNameFinderModel.java:50)
    at opennlp.tools.namefind.NameFinderME.train(NameFinderME.java:350)
    at opennlp.tools.namefind.NameFinderME.train(NameFinderME.java:356)
    at App.Train(App.java:49)
    at App.main(App.java:33)

My training code looks like this:

    public void Train() throws IOException
    {
        String trainFilename = "training\\Designation-train.txt";
        String modelFile = "models\\en-ner-designation.bin";

        ObjectStream<String> lineStream = new PlainTextByLineStream(new
FileInputStream(trainFilename), "UTF-8");
        ObjectStream<NameSample> sampleStream = new
NameSampleDataStream(lineStream);

        TokenNameFinderModel model = NameFinderME.train("en", "designation",
sampleStream, Collections.<String, Object>emptyMap(), 10, 5);
        BufferedOutputStream modelOut = null;

        try {
          modelOut = new BufferedOutputStream(new
FileOutputStream(modelFile));
          model.serialize(modelOut);
        } finally {
          if (modelOut != null)
             modelOut.close();
        }
    }


My training file looks like this. I have set cutoff to 5 and hence including
the token 5 times.

<START:designation>Chief Operating Officer<END>
<START:designation>Chief Operating Officer<END>
<START:designation>Chief Operating Officer<END>
<START:designation>Chief Operating Officer<END>
<START:designation>Chief Operating Officer<END>
<START:designation>COO<END>
<START:designation>COO<END>
<START:designation>COO<END>
<START:designation>COO<END>
<START:designation>COO<END>

I tried putting some text before and after the tokens but same result. I
even tried adding more tokens but same result. Would appreciate if someone
can help me out. Thanks in advance for your help.

regards,
Ninaad