Question

我正在尝试在UIMA管道中制作一个POSTagger（词性）。我已经下载了stanford POSTagger jar并将其附加到项目中并将模型复制到英语中但它引发了一些异常。

我的代码：

package com.gauge.ie.uimaproject;

import java.io.IOException;

import org.apache.uima.UIMAException;
import org.apache.uima.analysis_component.JCasAnnotator_ImplBase;
import org.apache.uima.analysis_engine.AnalysisEngine;
import org.apache.uima.analysis_engine.AnalysisEngineProcessException;
import org.apache.uima.cas.CASException;
import org.apache.uima.fit.descriptor.ConfigurationParameter;
import org.apache.uima.fit.factory.AnalysisEngineFactory;
import org.apache.uima.fit.factory.JCasFactory;
import org.apache.uima.jcas.JCas;

import edu.stanford.nlp.tagger.maxent.MaxentTagger;

public class POSTagger extends JCasAnnotator_ImplBase
{
    public static String SOFA_NAME="";
    MaxentTagger tagger = new MaxentTagger("tagger/bidirectional-distsim-wsj-0-18.tagger");

    @Override
    public void process(JCas jcas)throws AnalysisEngineProcessException
    {

    try
    {
            String text="";
            JCas newJCas=jcas.createView(SOFA_NAME);

            System.out.println("getting doc text.......");

            String docText = jcas.getDocumentText();
            String tagged=tagger.tagString(docText);
            System.out.println(tagged);
            newJCas.setDocumentText(tagged);
    }
        catch(CASException cae)
        {
            System.out.println(cae);
        }
    }
}

异常：

Reading POS tagger model from tagger/bidirectional-distsim-wsj-0-18.tagger ... org.apache.uima.resource.ResourceInitializationException: Could not instantiate Annotator class "com.gauge.ie.uimaproject.POSTagger". Check that your annotator class is not abstract and has a zero-argument constructor.  (Descriptor: <unknown>)
    at org.apache.uima.analysis_engine.impl.PrimitiveAnalysisEngine_impl.initializeAnalysisComponent(PrimitiveAnalysisEngine_impl.java:250)
    at org.apache.uima.analysis_engine.impl.PrimitiveAnalysisEngine_impl.initialize(PrimitiveAnalysisEngine_impl.java:170)
    at org.apache.uima.impl.AnalysisEngineFactory_impl.produceResource(AnalysisEngineFactory_impl.java:94)
    at org.apache.uima.impl.CompositeResourceFactory_impl.produceResource(CompositeResourceFactory_impl.java:62)
    at org.apache.uima.UIMAFramework.produceResource(UIMAFramework.java:279)
    at org.apache.uima.UIMAFramework.produceAnalysisEngine(UIMAFramework.java:407)
    at org.apache.uima.analysis_engine.asb.impl.ASB_impl.setup(ASB_impl.java:256)
    at org.apache.uima.analysis_engine.impl.AggregateAnalysisEngine_impl.initASB(AggregateAnalysisEngine_impl.java:430)
    at org.apache.uima.analysis_engine.impl.AggregateAnalysisEngine_impl.initializeAggregateAnalysisEngine(AggregateAnalysisEngine_impl.java:374)
    at org.apache.uima.analysis_engine.impl.AggregateAnalysisEngine_impl.initialize(AggregateAnalysisEngine_impl.java:187)
    at org.apache.uima.impl.AnalysisEngineFactory_impl.produceResource(AnalysisEngineFactory_impl.java:94)
    at org.apache.uima.impl.CompositeResourceFactory_impl.produceResource(CompositeResourceFactory_impl.java:62)
    at org.apache.uima.UIMAFramework.produceResource(UIMAFramework.java:279)
    at org.apache.uima.UIMAFramework.produceResource(UIMAFramework.java:331)
    at org.apache.uima.UIMAFramework.produceAnalysisEngine(UIMAFramework.java:448)
    at org.apache.uima.fit.pipeline.SimplePipeline.runPipeline(SimplePipeline.java:140)
    at com.gauge.ie.uimaproject.pipeline.main(pipeline.java:27)
Caused by: edu.stanford.nlp.io.RuntimeIOException: Unrecoverable error while loading a tagger model
    at edu.stanford.nlp.tagger.maxent.MaxentTagger.readModelAndInit(MaxentTagger.java:869)
    at edu.stanford.nlp.tagger.maxent.MaxentTagger.readModelAndInit(MaxentTagger.java:767)
    at edu.stanford.nlp.tagger.maxent.MaxentTagger.<init>(MaxentTagger.java:298)
    at edu.stanford.nlp.tagger.maxent.MaxentTagger.<init>(MaxentTagger.java:263)
    at com.gauge.ie.uimaproject.POSTagger.<init>(POSTagger.java:20)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:422)
    at java.lang.Class.newInstance(Class.java:442)
    at org.apache.uima.analysis_engine.impl.PrimitiveAnalysisEngine_impl.initializeAnalysisComponent(PrimitiveAnalysisEngine_impl.java:240)
    ... 16 more
Caused by: java.io.InvalidClassException: edu.stanford.nlp.tagger.maxent.ExtractorDistsim; local class incompatible: stream classdesc serialVersionUID = 1, local class serialVersionUID = 2
    at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:621)
    at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1623)
    at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1518)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1774)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371)
    at java.util.HashMap.readObject(HashMap.java:1396)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1896)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1993)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1918)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371)
    at edu.stanford.nlp.tagger.maxent.MaxentTagger.readExtractors(MaxentTagger.java:595)
    at edu.stanford.nlp.tagger.maxent.MaxentTagger.readModelAndInit(MaxentTagger.java:820)
    ... 26 more
org.apache.uima.resource.ResourceInitializationException: Could not instantiate Annotator class "com.gauge.ie.uimaproject.POSTagger". Check that your annotator class is not abstract and has a zero-argument constructor.  (Descriptor: <unknown>)

Answer 1

在编写自己的集成之前，我建议您查看DKPro及其与Stanford PoS标记器的集成。这可能会为您节省一些时间：

https://code.google.com/p/dkpro-core-asl/wiki/ComponentList_1_6_2#POS_Tagging

http://dkpro-core-gpl.googlecode.com/svn/de.tudarmstadt.ukp.dkpro.core-gpl/tags/de.tudarmstadt.ukp.dkpro.core-gpl-1.6.2/apidocs/index.html?de/tudarmstadt/ukp/dkpro/core/stanfordnlp/StanfordPosTagger.html

如果您真的想自己编写代码，可以查看它们的来源：

https://github.com/dkpro/dkpro-core/blob/master/de.tudarmstadt.ukp.dkpro.core.stanfordnlp-gpl/src/main/java/de/tudarmstadt/ukp/dkpro/core/stanfordnlp/StanfordPosTagger.java

据我所知，他们使用不同的构造函数实例化标记器：

String modelFile = aUrl.toString();
            MaxentTagger tagger = new MaxentTagger(modelFile,
                    StringUtils.argsToProperties(new String[] { "-model", modelFile }), false);

Answer 2

您正在尝试加载与您正在使用的POS标记器版本不兼容的模型POS标签模型

public void insertStocuri(Integer rucsaci,Integer kituri, Integer sticle)
    {
        ContentValues newValues = new ContentValues();

                newValues.put("Rucsaci", rucsaci);
                newValues.put("Kit",kituri);
                newValues.put("Sticle",sticle);


        Cursor query =db.query("STOCURI", null, null, null, null, null, null);

        if(query.getCount()<1)


        {

        //db.replace("STOCURI", null, newValues);
        db.insert("STOCURI", null, newValues);
        ///Toast.makeText(context, "Reminder Is Successfully Saved", Toast.LENGTH_LONG).show();

        }

        else {
            db.update("STOCURI",newValues, null, null);

        }
        }

因此，POS标记符无法反序列化模型。确保您使用的是兼容型号。

斯坦福大学与UIMA合作

2 个答案: