Cleartk:初始化错误[类org.cleartk.classifier.jar.DefaultSequenceDataWriterFactory]字段'dataWriterClassName‘是必需的

Question

我的主程序看起来像是：

    public static void main(String args[]) throws UIMAException, IOException{
    //TypeSystemDescription tsd = TypeSystemDescriptionFactory.createTypeSystemDescription(Question.class);

    AggregateBuilder builder = new AggregateBuilder();
    //builder.add(SentenceAnnotator.getDescription());
    builder.add(AnalysisEngineFactory.createPrimitiveDescription(POSAnnotator1.class,
            ExampleComponents.TYPE_SYSTEM_DESCRIPTION,
            GenericJarClassifierFactory.PARAM_CLASSIFIER_JAR_PATH, outputDirectory + File.separator + "model.jar",
            CleartkAnnotator.PARAM_IS_TRAINING, true,
            DefaultDataWriterFactory.PARAM_DATA_WRITER_CLASS_NAME, InstanceDataWriter.class.getName(),
            DirectoryDataWriterFactory.PARAM_OUTPUT_DIRECTORY, new File(outputDirectory)));

    JCas jcas = JCasFactory.createJCas();
    jcas.setDocumentText(testData);

    SimplePipeline.runPipeline(jcas, builder.createAggregateDescription());

}

有人能解释这个错误吗？

由:java.lang.IllegalArgumentException引起:初始化类java.lang.IllegalArgumentException字段'dataWriterClassName‘的错误是必需的

我试图用其他数据编写器代替InstanceDataWriter，但它们不起作用。

Answer 1

POS注解器使用序列数据写入器来编写示例。从DefaultDataWriterFactory.PARAM_DATA_WRITER_CLASS_NAME.设置DataWriter类名参数对于序列数据编写器来说，应该是DefaultSequenceDataWriterFactory.PARAM_DATA_WRITER_CLASS_NAME。Sequence意味着cas (许多POS标记)中有多个标签，而“普通”分类器只为整个文档提供一个标签。

http://cleartk.googlecode.com/svn-history/r4142/tags/cleartk-release-1.2.0/apidocs/org/cleartk/classifier/jar/DefaultSequenceDataWriterFactory.html