edu.stanford.nlp.scenegraph

Class SemanticGraphEnhancer

java.lang.Object

edu.stanford.nlp.scenegraph.SemanticGraphEnhancer

public class SemanticGraphEnhancer
extends java.lang.Object

Performs several enhancements of semantic graphs to make them a better semantic representation. Assumes that the graph contains Universal English relations.

Author:

Sebastian Schuster

Field Summary

Fields

Modifier and Type	Field and Description
static SemgrexPattern	QUANT_MOD_PATTERN
static SemgrexPattern	QUANT_MOD_PATTERN2
static SemgrexPattern	QUANT_MOD_PATTERN3

Constructor Summary

Constructors

Constructor and Description
SemanticGraphEnhancer()

Method Summary

Modifier and Type	Method and Description
static void	collapseCompounds(SemanticGraph sg)
static void	collapseParticles(SemanticGraph sg) Collapses verbs with verbal particles.
static void	enhance(SemanticGraph sg) Performs all the enhancements in the following order: Process quantificational modifiers Collapse verbs with particles, and compound nouns. Resolve pronouns. Resolve plural nouns.
static void	main(java.lang.String[] args)
static void	processQuanftificationModifiers(SemanticGraph sg) Turns quantifier-like expressions such as "a lot of" into multi-word expressions and promotes the original nominal modifier to the head of phrase.
static void	resolvePlurals(SemanticGraph sg) Creates copies of plural nodes which match any of the above defined patterns.
static void	resolvePronouns(SemanticGraph sg) Resolves pronouns in the semantic graph and replaces the pronominal node in the semantic graph with the node of its antecedent.

Methods inherited from class java.lang.Object

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

Field Detail

QUANT_MOD_PATTERN

public static final SemgrexPattern QUANT_MOD_PATTERN

QUANT_MOD_PATTERN2

public static final SemgrexPattern QUANT_MOD_PATTERN2

QUANT_MOD_PATTERN3

public static final SemgrexPattern QUANT_MOD_PATTERN3

Constructor Detail

SemanticGraphEnhancer

public SemanticGraphEnhancer()

Method Detail

processQuanftificationModifiers

public static void processQuanftificationModifiers(SemanticGraph sg)

Turns quantifier-like expressions such as "a lot of" into multi-word expressions and promotes the original nominal modifier to the head of phrase.

resolvePlurals

public static void resolvePlurals(SemanticGraph sg)

Creates copies of plural nodes which match any of the above defined patterns. For cases where both the subject and the object are plural it assumes a distributive reading.

Parameters:

sg -

collapseCompounds

public static void collapseCompounds(SemanticGraph sg)

collapseParticles

public static void collapseParticles(SemanticGraph sg)

Collapses verbs with verbal particles.

Parameters:

sg -

resolvePronouns

public static void resolvePronouns(SemanticGraph sg)

Resolves pronouns in the semantic graph and replaces the pronominal node in the semantic graph with the node of its antecedent.

Parameters:

sg - A SemanticGraph.

enhance

public static void enhance(SemanticGraph sg)

Performs all the enhancements in the following order:

1. Process quantificational modifiers
2. Collapse verbs with particles, and compound nouns.
3. Resolve pronouns.
4. Resolve plural nouns.

Parameters:

sg -

main

public static void main(java.lang.String[] args)
                 throws java.io.IOException

Parameters:

args -

Throws:

java.io.IOException