Running the POSTaggerCrossValidator with -ngram argument causes an exception
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                 Key: OPENNLP-452
                 URL: https://issues.apache.org/jira/browse/OPENNLP-452
             Project: OpenNLP
          Issue Type: Bug
          Components: POS Tagger
    Affects Versions: tools-1.5.3
            Reporter: William Colen
            Assignee: William Colen
             Fix For: tools-1.5.3


I tried to execute POSTaggerCrossValidator with the -ngram parameter and it 
caused a UnsupportedOperationException.

Sometimes it is interesting for some training tools to pre-process the corpus 
to artifacts before training, for example dictionaries.
CrossValidationPartitioner.TrainingSampleStream should support the reset 
operation to allow this functionality.

Does anybody know why it does not support resetting?

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