edu.stanford.nlp.semgraph.semgrex.ssurgeon

Class CollapseSubtree

java.lang.Object

edu.stanford.nlp.semgraph.semgrex.ssurgeon.SsurgeonEdit

edu.stanford.nlp.semgraph.semgrex.ssurgeon.CollapseSubtree

public class CollapseSubtree
extends SsurgeonEdit

Collapses a subtree into a single node. The new node has the POS tag and index of the root node and the value and the lemma of the concatenation of the subnodes. One intended use is to collapse multi-word expressions into one node to facilitate relation extraction and related tasks.

Author:

Sebastian Schuster

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	LABEL
protected java.lang.String	rootName

Constructor Summary

Constructors

Constructor and Description
CollapseSubtree(java.lang.String rootNodeName)

Method Summary

Modifier and Type	Method and Description
boolean	evaluate(SemanticGraph sg, SemgrexMatcher sm) Given a matching instance (via the SemgrexMatcher), performs an in-place modification on the given SemanticGraph.
java.lang.String	toEditString()

Methods inherited from class edu.stanford.nlp.semgraph.semgrex.ssurgeon.SsurgeonEdit

addNamedNode, equals, getNamedNode, getOwningPattern, setOwningPattern, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

LABEL

public static final java.lang.String LABEL

See Also:

Constant Field Values

rootName

protected java.lang.String rootName

Constructor Detail

CollapseSubtree

public CollapseSubtree(java.lang.String rootNodeName)

Method Detail

evaluate

public boolean evaluate(SemanticGraph sg,
                        SemgrexMatcher sm)

Description copied from class: SsurgeonEdit

Given a matching instance (via the SemgrexMatcher), performs an in-place modification on the given SemanticGraph.

Specified by:

evaluate in class SsurgeonEdit

Returns:

whether or not there was an edit

toEditString

public java.lang.String toEditString()

Specified by:

toEditString in class SsurgeonEdit