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Error Opening Stanford's Open Information

I am trying to run openIE given by stanford nlp using the command specified on the official website: http://nlp.stanford.edu/software/openie.shtml

java -mx1g -cp stanford-openie.jar:stanford-openie-models.jar edu.stanford.nlp.naturalli.OpenIE mytextfile.txt

but I get the following error:

 Exception in thread "main" java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory at edu.stanford.nlp.pipeline.StanfordCoreNLP.<clinit>(StanfordCoreNLP.java:99) at edu.stanford.nlp.naturalli.OpenIE.main(OpenIE.java:679) Caused by: java.lang.ClassNotFoundException: org.slf4j.LoggerFactory at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 2 more

Again, when I run java code:

 package edu.stanford.nlp.naturalli; import edu.stanford.nlp.ie.util.RelationTriple; import edu.stanford.nlp.ling.CoreAnnotations; import edu.stanford.nlp.pipeline.Annotation; import edu.stanford.nlp.pipeline.StanfordCoreNLP; import edu.stanford.nlp.util.CoreMap; import java.util.Collection; import java.util.List; import java.util.Properties; public class OpenIEDemo { public static void main(String[] args) throws Exception { // Create the Stanford CoreNLP pipeline Properties props = new Properties(); props.setProperty("annotators", "tokenize,ssplit,pos,depparse,natlog,openie"); StanfordCoreNLP pipeline = new StanfordCoreNLP(props); // Annotate an example document. Annotation doc = new Annotation("Obama was born in Hawaii. He is our president."); pipeline.annotate(doc); // Loop over sentences in the document for (CoreMap sentence : doc.get(CoreAnnotations.SentencesAnnotation.class)) { // Get the OpenIE triples for the sentence Collection<RelationTriple> triples = sentence.get(NaturalLogicAnnotations.RelationTriplesAnnotation.class); // Print the triples for (RelationTriple triple : triples) { System.out.println(triple.confidence + "\t" + triple.subjectLemmaGloss() + "\t" + triple.relationLemmaGloss() + "\t" + triple.objectLemmaGloss()); } // Alternately, to only run eg, the clause splitter: List<SentenceFragment> clauses = new OpenIE(props).clausesInSentence(sentence); for (SentenceFragment clause : clauses) { System.out.println(clause.parseTree); } } } }

I get the following error:

 Adding annotator tokenize TokenizerAnnotator: No tokenizer type provided. Defaulting to PTBTokenizer. Adding annotator ssplit Adding annotator pos Reading POS tagger model from edu/stanford/nlp/models/pos-tagger/english-left3words/english-left3words-distsim.tagger ... done [0,7 sec]. Adding annotator depparse Loading depparse model file: edu/stanford/nlp/models/parser/nndep/english_UD.gz ... PreComputed 100000, Elapsed Time: 1.159 (s) Initializing dependency parser done [3,5 sec]. Adding annotator natlog Exception in thread "main" java.lang.IllegalArgumentException: annotator "natlog" requires annotator "parse" at edu.stanford.nlp.pipeline.StanfordCoreNLP.construct(StanfordCoreNLP.java:297) at edu.stanford.nlp.pipeline.StanfordCoreNLP.<init>(StanfordCoreNLP.java:126) at edu.stanford.nlp.pipeline.StanfordCoreNLP.<init>(StanfordCoreNLP.java:122) at stnfrd.OpenIEDemo.main(OpenIEDemo.java:33) /home/ue/.cache/netbeans/8.1/executor-snippets/run.xml:53: Java returned: 1 BUILD FAILED (total time: 4 seconds)

Any help would be appreciated.

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1 answer

  • First mistake: you don't have the slf4j jar that is currently included in the latest version of GitHub: https://github.com/stanfordnlp/CoreNLP , or you can find a specific jar here: http://www.slf4j.org/download .html

  • The second error is caused by "natlog" requiring "parsing". Change "depparse" to "parse":

     props.setProperty("annotators", "tokenize,ssplit,pos,parse,natlog,openie");
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