Error while loading a tagger model (probably missing model file)

Question

I am trying to implement the below code:

import java.util.Properties;
import edu.stanford.nlp.coref.CorefCoreAnnotations;
import edu.stanford.nlp.coref.CorefCoreAnnotations;
import edu.stanford.nlp.coref.data.CorefChain;
import edu.stanford.nlp.coref.data.Mention;
import edu.stanford.nlp.ling.CoreAnnotations;
import edu.stanford.nlp.pipeline.Annotation;
import edu.stanford.nlp.pipeline.StanfordCoreNLP;
import edu.stanford.nlp.util.CoreMap;

public class CorefResolver {
  public static void main(String[] args) throws Exception {
  Annotation document = new Annotation("Barack Obama was born in Hawaii.  He is the president. Obama was elected in 2008.");
  Properties props = new Properties();
  props.setProperty("annotators", "tokenize,ssplit,pos,lemma,ner,parse,mention,coref");
  StanfordCoreNLP pipeline = new StanfordCoreNLP(props);
  pipeline.annotate(document);
  System.out.println("---");
  System.out.println("coref chains");
  for (CorefChain cc : document.get(CorefCoreAnnotations.CorefChainAnnotation.class).values()) {
  System.out.println("\t" + cc);
  }
  for (CoreMap sentence : document.get(CoreAnnotations.SentencesAnnotation.class)) {
  System.out.println("---");
  System.out.println("mentions");
  for (Mention m : sentence.get(CorefCoreAnnotations.CorefMentionsAnnotation.class)) {
    System.out.println("\t" + m);
    }
  }
 }
}

This is a code from stanford corenlp. I have used eclipse as framework. Below image shows the view in eclipse.

While running the code, I am getting the below error. I have tried including models taggers etc. Still showing the same error.

Adding annotator tokenize
No tokenizer type provided. Defaulting to PTBTokenizer.
Adding annotator ssplit
Adding annotator pos
Exception in thread "main" java.lang.RuntimeException: edu.stanford.nlp.io.RuntimeIOException: Error while loading a tagger model (probably missing model file)
at edu.stanford.nlp.pipeline.AnnotatorFactories$4.create(AnnotatorFactories.java:245)
at edu.stanford.nlp.pipeline.AnnotatorPool.get(AnnotatorPool.java:152)
at edu.stanford.nlp.pipeline.StanfordCoreNLP.construct(StanfordCoreNLP.java:451)
at edu.stanford.nlp.pipeline.StanfordCoreNLP.<init>(StanfordCoreNLP.java:154)
at edu.stanford.nlp.pipeline.StanfordCoreNLP.<init>(StanfordCoreNLP.java:150)
at edu.stanford.nlp.pipeline.StanfordCoreNLP.<init>(StanfordCoreNLP.java:137)
at CorefResolver.main(CorefResolver.java:16)
Caused by: edu.stanford.nlp.io.RuntimeIOException: Error while loading a tagger model (probably missing model file)
at edu.stanford.nlp.tagger.maxent.MaxentTagger.readModelAndInit(MaxentTagger.java:791)
at edu.stanford.nlp.tagger.maxent.MaxentTagger.<init>(MaxentTagger.java:312)
at edu.stanford.nlp.tagger.maxent.MaxentTagger.<init>(MaxentTagger.java:265)
at edu.stanford.nlp.pipeline.POSTaggerAnnotator.loadModel(POSTaggerAnnotator.java:85)
at edu.stanford.nlp.pipeline.POSTaggerAnnotator.<init>(POSTaggerAnnotator.java:73)
at edu.stanford.nlp.pipeline.AnnotatorImplementations.posTagger(AnnotatorImplementations.java:63)
at edu.stanford.nlp.pipeline.AnnotatorFactories$4.create(AnnotatorFactories.java:243)
... 6 more
Caused by: java.io.IOException: Unable to open "edu/stanford/nlp/models/pos-tagger/english-left3words/english-left3words-distsim.tagger" as class path, filename or URL
at edu.stanford.nlp.io.IOUtils.getInputStreamFromURLOrClasspathOrFileSystem(IOUtils.java:470)
at edu.stanford.nlp.tagger.maxent.MaxentTagger.readModelAndInit(MaxentTagger.java:789)
... 12 more

Could anyone help me to solve this issue?

score 3 · Answer 1 · answered Aug 16 '21 at 03:21

I found adding the models classifier dependency worked.

        <dependency>
            <groupId>edu.stanford.nlp</groupId>
            <artifactId>stanford-corenlp</artifactId>
            <version>4.2.2</version>
        </dependency>

        <dependency>
            <groupId>edu.stanford.nlp</groupId>
            <artifactId>stanford-corenlp</artifactId>
            <version>4.2.2</version>
            <classifier>models</classifier>
        </dependency>

score 3 · Answer 2 · answered Aug 20 '21 at 08:20

3

Using Kotlin Gradle dsl (build.gradle.kts) this worked for me:

val corenlp_version = "4.2.2"

If you don't want to use the previous variable, you can substitute the value:

implementation("edu.stanford.nlp:stanford-corenlp:$corenlp_version")
implementation("edu.stanford.nlp:stanford-corenlp:$corenlp_version:models")
implementation("edu.stanford.nlp:stanford-corenlp:$corenlp_version:models-english")
implementation("edu.stanford.nlp:stanford-corenlp:$corenlp_version:models-english-kbp")

answered Aug 20 '21 at 08:20

Jako

2,489
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I have implemented this solution for my backend Java application and it works. I removed the variable and added directly the version in the gradle file. Thanks so much. – Eder Armando Anillo Lora Jan 10 '23 at 19:01

score 2 · Answer 3 · answered Jan 31 '18 at 05:36

2

Included Stanford corenlp 3.8 jar and Stanford corenlp 3.8 models. Now the coreference resolution is working

jar

answered Jan 31 '18 at 05:36

user3251664

441
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Error while loading a tagger model (probably missing model file)

3 Answers3