org.apache.stanbol.enhancer.engines.poschunker

Class PhraseTypeDefinition

java.lang.Object

org.apache.stanbol.enhancer.engines.poschunker.PhraseTypeDefinition

public class PhraseTypeDefinition
extends Object

Definition of a phrase type

Phrases are defined by a set of POS tags that can

• required Tokens - typically noun for noun phrases, verbs for verb phrases.
• start types - types that can start a new phrase
• prefix types - types that can continue a phrase not yet containing a required token
• continuation types - types that can continue a phrase already containing a required token
• end types - types that can end a phrase. Used to remove tailing tokens from a phrase (typically punctations).

TODO: Add support for Pos and String tags in addition to LexicalCategory.

Author:

Rupert Westenthaler

Field Summary

Fields

Modifier and Type	Field and Description
protected org.apache.stanbol.enhancer.nlp.pos.LexicalCategory	phraseType
protected Set<org.apache.stanbol.enhancer.nlp.pos.LexicalCategory>	readOnlyContinuationTypes
protected Set<org.apache.stanbol.enhancer.nlp.pos.LexicalCategory>	readOnlyEndTypes
protected Set<org.apache.stanbol.enhancer.nlp.pos.LexicalCategory>	readOnlyPrefixTypes
protected Set<org.apache.stanbol.enhancer.nlp.pos.LexicalCategory>	readOnlyRequiredTypes
protected Set<org.apache.stanbol.enhancer.nlp.pos.LexicalCategory>	readOnlyStartTypes

Constructor Summary

Constructors

Constructor and Description
PhraseTypeDefinition(org.apache.stanbol.enhancer.nlp.pos.LexicalCategory phraseType)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	addContinuationType(org.apache.stanbol.enhancer.nlp.pos.LexicalCategory... types)
boolean	addEndType(org.apache.stanbol.enhancer.nlp.pos.LexicalCategory... types)
boolean	addPrefixType(org.apache.stanbol.enhancer.nlp.pos.LexicalCategory... types)
boolean	addRequiredType(org.apache.stanbol.enhancer.nlp.pos.LexicalCategory... types)
boolean	addStartType(org.apache.stanbol.enhancer.nlp.pos.LexicalCategory... types)
Set<org.apache.stanbol.enhancer.nlp.pos.LexicalCategory>	getContinuationType() Getter for the read only set with the continuation types
Set<org.apache.stanbol.enhancer.nlp.pos.LexicalCategory>	getEndType() Getter for the read only set with the end types.
org.apache.stanbol.enhancer.nlp.pos.LexicalCategory	getPhraseType() Getter for the type of this phrase definition
Set<org.apache.stanbol.enhancer.nlp.pos.LexicalCategory>	getPrefixType() Getter for the read only set with the prefix types
Set<org.apache.stanbol.enhancer.nlp.pos.LexicalCategory>	getRequiredType() Getter for the read only set with the required types
Set<org.apache.stanbol.enhancer.nlp.pos.LexicalCategory>	getStartType() Getter for the read only set with the start types.
boolean	removeContinuationType(org.apache.stanbol.enhancer.nlp.pos.LexicalCategory... types)
boolean	removeEndType(org.apache.stanbol.enhancer.nlp.pos.LexicalCategory... types)
boolean	removePrefixType(org.apache.stanbol.enhancer.nlp.pos.LexicalCategory... types)
boolean	removeRequiredType(org.apache.stanbol.enhancer.nlp.pos.LexicalCategory... types)
boolean	removeStartType(org.apache.stanbol.enhancer.nlp.pos.LexicalCategory... types)
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

phraseType

protected final org.apache.stanbol.enhancer.nlp.pos.LexicalCategory phraseType

readOnlyStartTypes

protected final Set<org.apache.stanbol.enhancer.nlp.pos.LexicalCategory> readOnlyStartTypes

readOnlyPrefixTypes

protected final Set<org.apache.stanbol.enhancer.nlp.pos.LexicalCategory> readOnlyPrefixTypes

readOnlyContinuationTypes

protected final Set<org.apache.stanbol.enhancer.nlp.pos.LexicalCategory> readOnlyContinuationTypes

readOnlyRequiredTypes

protected final Set<org.apache.stanbol.enhancer.nlp.pos.LexicalCategory> readOnlyRequiredTypes

readOnlyEndTypes

protected final Set<org.apache.stanbol.enhancer.nlp.pos.LexicalCategory> readOnlyEndTypes

Constructor Detail

PhraseTypeDefinition

public PhraseTypeDefinition(org.apache.stanbol.enhancer.nlp.pos.LexicalCategory phraseType)

Method Detail

addStartType

public boolean addStartType(org.apache.stanbol.enhancer.nlp.pos.LexicalCategory... types)

addPrefixType

public boolean addPrefixType(org.apache.stanbol.enhancer.nlp.pos.LexicalCategory... types)

addContinuationType

public boolean addContinuationType(org.apache.stanbol.enhancer.nlp.pos.LexicalCategory... types)

addRequiredType

public boolean addRequiredType(org.apache.stanbol.enhancer.nlp.pos.LexicalCategory... types)

addEndType

public boolean addEndType(org.apache.stanbol.enhancer.nlp.pos.LexicalCategory... types)

removeStartType

public boolean removeStartType(org.apache.stanbol.enhancer.nlp.pos.LexicalCategory... types)

removePrefixType

public boolean removePrefixType(org.apache.stanbol.enhancer.nlp.pos.LexicalCategory... types)

removeContinuationType

public boolean removeContinuationType(org.apache.stanbol.enhancer.nlp.pos.LexicalCategory... types)

removeRequiredType

public boolean removeRequiredType(org.apache.stanbol.enhancer.nlp.pos.LexicalCategory... types)

removeEndType

public boolean removeEndType(org.apache.stanbol.enhancer.nlp.pos.LexicalCategory... types)

getPhraseType

public org.apache.stanbol.enhancer.nlp.pos.LexicalCategory getPhraseType()

Getter for the type of this phrase definition

Returns:

getStartType

public Set<org.apache.stanbol.enhancer.nlp.pos.LexicalCategory> getStartType()

Getter for the read only set with the start types.

Returns:

the read only set with LexicalCategories that can start a phrase of that type

getPrefixType

public Set<org.apache.stanbol.enhancer.nlp.pos.LexicalCategory> getPrefixType()

Getter for the read only set with the prefix types

Returns:

the read only set with LexicalCategories that can continue a phrase that does not yet include a token classified with a required type. A typical Example are LexicalCategory.Adjective in Noun Phrases that need to be considered in prefixes (e.g. "A nice weekend") but excluded after the first noun (e.g. "the trip last week").

getContinuationType

public Set<org.apache.stanbol.enhancer.nlp.pos.LexicalCategory> getContinuationType()

Getter for the read only set with the continuation types

Returns:

the read only set with LexicalCategories that can continue a phrase that does already include a token classified with a required type. A typical Example are LexicalCategory.Adjective in Noun Phrases that need to be considered in prefixes (e.g. "A nice weekend") but excluded after the first noun (e.g. "the trip last week").

getRequiredType

public Set<org.apache.stanbol.enhancer.nlp.pos.LexicalCategory> getRequiredType()

Getter for the read only set with the required types

Returns:

the read only set with LexicalCategories that MUST occur within a phrase of that type

getEndType

public Set<org.apache.stanbol.enhancer.nlp.pos.LexicalCategory> getEndType()

Getter for the read only set with the end types.

Returns:

the read only set with LexicalCategories that can end a phrase of that type

toString

public String toString()

Overrides:

toString in class Object