CODEWITHSUNDEEP
parsingnlpstanford-nlp
pokeRex110
pokeRex110

Reputation: 855

Malt parser, iterate over parsed tree in java

I am trying to extract the tree dependencies from a Malt ConcurrentMaltParserModel. I iterate over the edges like: 

SortedSet<ConcurrentDependencyEdge> edges = graph.getEdges();
for (ConcurrentDependencyEdge e : edges) {
      //here I would need to extract the dependency type
}

I thought I could extract the dependency type in a similar way as StanfordParser, but unfortunately I cant figure out how to do that.

Upvotes: 0

Views: 156

Answers (1)

Jon Gauthier
Jon Gauthier

Reputation: 25592

First obtain a SemanticGraph object (e.g. by retrieving the value of a BasicDependenciesAnnotation in the CoreNLP pipeline, or by parsing directly with Stanford Parser). I can elaborate on this more if necessary.

The SemanticGraph provides a simple edge iterable for processing independent graph edges. (See the SemanticGraphEdge class. Also, note that SemanticGraphEdge.getRelation returns a GrammaticalRelation instance.)

SemanticGraph sg = ....
for (SemanticGraphEdge edge : sg.getEdgesIterable()) {
  int headIndex = edge.getGovernor().index();
  int depIndex = edge.getDependent().index();
  String label = edge.getRelation().getShortName();

  System.out.printf("%d %d %s%n", headIndex, depIndex, label);
}

Upvotes: 1

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