dragon.nlp.extract

Class AbstractTripleExtractor

java.lang.Object

dragon.nlp.extract.AbstractTripleExtractor

All Implemented Interfaces:

TripleExtractor

Direct Known Subclasses:

BasicTripleExtractor

public abstract class AbstractTripleExtractor
extends Object
implements TripleExtractor

Abstract class for triple extraction

Copyright: Copyright (c) 2005

Company: IST, Drexel University

Version:

1.0

Author:

Davis Zhou

Field Summary

Fields

Modifier and Type	Field and Description
protected ConceptFilter	cf
protected ClauseFinder	clauseFinder
protected boolean	clauseIdentify_enabled
protected ConceptExtractor	conceptExtractor
protected boolean	conceptFilter_enabled
protected ArrayList	conceptList
protected boolean	coordinatingCheck_enabled
protected CoordinatingChecker	coordinatingChecker
protected CoReference	coReference
protected boolean	coReference_enabled
protected boolean	relationCheck_enabled
protected boolean	semanticCheck_enabled
protected ArrayList	tripleList

Constructor Summary

Constructors

Constructor and Description
AbstractTripleExtractor(ConceptExtractor te)

Method Summary

Modifier and Type	Method and Description
protected boolean	checkCoordinateTerms(Concept first, Concept second)
boolean	extractFromDoc(Document doc) Extracts triples from a parsed document.
boolean	extractFromDoc(String doc) Extracts triples from a raw document.
boolean	getClauseIdentifyOption() Gets the option of extracting triples within a clause window.
ConceptExtractor	getConceptExtractor() Gets the concept extractor used for triple extraction
ConceptFilter	getConceptFilter() Gets the concept filter used for this extractor.
ArrayList	getConceptList() Gets concept list
boolean	getCoordinatingCheckOption()
boolean	getCoReferenceOption()
boolean	getFilteringOption() Tests if the extractor applies concept filtering.
boolean	getRelationCheckOption() Gets the option of checking the existance of the relationship between two semantic types.
boolean	getSemanticCheckOption() Gets the option of checking the semantic type of the relationship
ArrayList	getTripleList() Gets triple list
void	initDocExtraction() It is required to call this method before calling the extractFromDoc method.
SortedArray	mergeTriples(SortedArray mergedConceptList, ArrayList tripleList) Merge duplicated triples.
void	print(PrintWriter out) Prints out extracted concepts and triples to the specified print writer.
void	print(PrintWriter out, ArrayList conceptList, ArrayList tripleList) Prints out the specified concepts and triples to the print writer.
void	setClauseIdentifyOption(boolean option) Sets the option of extracting triples within a clause window.
void	setConceptFilter(ConceptFilter cf) Sets the concept filter for the concept extatractor
void	setCoordinatingCheckOption(boolean option)
void	setCoReferenceOption(boolean option)
void	setFilteringOption(boolean option) Sets the option of concept filtering
void	setRelationCheckOption(boolean option) Sets the option of checking the existance of the relationship between two semantic types.
void	setSemanticCheckOption(boolean option) Sets the option of checking the semantic type of the relationship

Methods inherited from class java.lang.Object

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

Methods inherited from interface dragon.nlp.extract.TripleExtractor

extractFromSentence

Field Detail

conceptExtractor

protected ConceptExtractor conceptExtractor

cf

protected ConceptFilter cf

coReference

protected CoReference coReference

clauseFinder

protected ClauseFinder clauseFinder

coordinatingChecker

protected CoordinatingChecker coordinatingChecker

conceptList

protected ArrayList conceptList

tripleList

protected ArrayList tripleList

coReference_enabled

protected boolean coReference_enabled

semanticCheck_enabled

protected boolean semanticCheck_enabled

relationCheck_enabled

protected boolean relationCheck_enabled

clauseIdentify_enabled

protected boolean clauseIdentify_enabled

coordinatingCheck_enabled

protected boolean coordinatingCheck_enabled

conceptFilter_enabled

protected boolean conceptFilter_enabled

Constructor Detail

AbstractTripleExtractor

public AbstractTripleExtractor(ConceptExtractor te)

Method Detail

initDocExtraction

public void initDocExtraction()

Description copied from interface: TripleExtractor

It is required to call this method before calling the extractFromDoc method.

Specified by:

initDocExtraction in interface TripleExtractor

getConceptList

public ArrayList getConceptList()

Description copied from interface: TripleExtractor

Gets concept list

Specified by:

getConceptList in interface TripleExtractor

Returns:

a list of concepts extracted before

getTripleList

public ArrayList getTripleList()

Description copied from interface: TripleExtractor

Gets triple list

Specified by:

getTripleList in interface TripleExtractor

Returns:

a list of triples extracted before.

getConceptExtractor

public ConceptExtractor getConceptExtractor()

Description copied from interface: TripleExtractor

Gets the concept extractor used for triple extraction

Specified by:

getConceptExtractor in interface TripleExtractor

Returns:

the concept extractor

getFilteringOption

public boolean getFilteringOption()

Description copied from interface: TripleExtractor

Tests if the extractor applies concept filtering.

Specified by:

getFilteringOption in interface TripleExtractor

Returns:

true if the extractor applies concept filtering

setFilteringOption

public void setFilteringOption(boolean option)

Description copied from interface: TripleExtractor

Sets the option of concept filtering

Specified by:

setFilteringOption in interface TripleExtractor

Parameters:

option - the option of concept filtering

setConceptFilter

public void setConceptFilter(ConceptFilter cf)

Description copied from interface: TripleExtractor

Sets the concept filter for the concept extatractor

Specified by:

setConceptFilter in interface TripleExtractor

Parameters:

cf - the concept filter

getConceptFilter

public ConceptFilter getConceptFilter()

Description copied from interface: TripleExtractor

Gets the concept filter used for this extractor.

Specified by:

getConceptFilter in interface TripleExtractor

Returns:

the concept filter used.

setCoordinatingCheckOption

public void setCoordinatingCheckOption(boolean option)

Specified by:

setCoordinatingCheckOption in interface TripleExtractor

getCoordinatingCheckOption

public boolean getCoordinatingCheckOption()

Specified by:

getCoordinatingCheckOption in interface TripleExtractor

setCoReferenceOption

public void setCoReferenceOption(boolean option)

Specified by:

setCoReferenceOption in interface TripleExtractor

getCoReferenceOption

public boolean getCoReferenceOption()

Specified by:

getCoReferenceOption in interface TripleExtractor

getSemanticCheckOption

public boolean getSemanticCheckOption()

Description copied from interface: TripleExtractor

Gets the option of checking the semantic type of the relationship

Specified by:

getSemanticCheckOption in interface TripleExtractor

Returns:

true if the extractor checks the semantic type of the relationship

setSemanticCheckOption

public void setSemanticCheckOption(boolean option)

Description copied from interface: TripleExtractor

Sets the option of checking the semantic type of the relationship

Specified by:

setSemanticCheckOption in interface TripleExtractor

Parameters:

option - the option of checking the semantic type of the relationship

getRelationCheckOption

public boolean getRelationCheckOption()

Description copied from interface: TripleExtractor

Gets the option of checking the existance of the relationship between two semantic types.

Specified by:

getRelationCheckOption in interface TripleExtractor

Returns:

true if the extractor checks the existance of the relationship between two semantic types.

setRelationCheckOption

public void setRelationCheckOption(boolean option)

Description copied from interface: TripleExtractor

Sets the option of checking the existance of the relationship between two semantic types.

Specified by:

setRelationCheckOption in interface TripleExtractor

Parameters:

option - the option of checking the existance of the relationship between two semantic types.

getClauseIdentifyOption

public boolean getClauseIdentifyOption()

Description copied from interface: TripleExtractor

Gets the option of extracting triples within a clause window.

Specified by:

getClauseIdentifyOption in interface TripleExtractor

Returns:

true if the extractor extracts triples within a clause window.

setClauseIdentifyOption

public void setClauseIdentifyOption(boolean option)

Description copied from interface: TripleExtractor

Sets the option of extracting triples within a clause window.

Specified by:

setClauseIdentifyOption in interface TripleExtractor

Parameters:

option - the option of extracting triples within a clause window.

print

public void print(PrintWriter out)

Description copied from interface: TripleExtractor

Prints out extracted concepts and triples to the specified print writer.

Specified by:

print in interface TripleExtractor

Parameters:

out - the print writer

print

public void print(PrintWriter out,
                  ArrayList conceptList,
                  ArrayList tripleList)

Description copied from interface: TripleExtractor

Prints out the specified concepts and triples to the print writer.

Specified by:

print in interface TripleExtractor

Parameters:

out - the print writer

conceptList - the concept list for print

tripleList - the triple list for print

extractFromDoc

public boolean extractFromDoc(String doc)

Description copied from interface: TripleExtractor

Extracts triples from a raw document.

Specified by:

extractFromDoc in interface TripleExtractor

Parameters:

doc - the raw document for extraction

Returns:

true if extracted successfully.

extractFromDoc

public boolean extractFromDoc(Document doc)

Description copied from interface: TripleExtractor

Extracts triples from a parsed document.

Specified by:

extractFromDoc in interface TripleExtractor

Parameters:

doc - the parsed document for extraction

Returns:

true if extracted successfully.

mergeTriples

public SortedArray mergeTriples(SortedArray mergedConceptList,
                                ArrayList tripleList)

Description copied from interface: TripleExtractor

Merge duplicated triples.

Specified by:

mergeTriples in interface TripleExtractor

Parameters:

mergedConceptList - a merged and sorted concept list

tripleList - a list of triples for merging

Returns:

a list of merged and sorted triples

checkCoordinateTerms

protected boolean checkCoordinateTerms(Concept first,
                                       Concept second)