Package org.carrot2.text.preprocessing.filter

Class SingleLabelFilterBase

java.lang.Object

org.carrot2.attrs.AttrComposite

org.carrot2.text.preprocessing.filter.SingleLabelFilterBase

All Implemented Interfaces:

AcceptingVisitor, LabelFilter

Direct Known Subclasses:

GenitiveLabelFilter, MinLengthLabelFilter, NumericLabelFilter, QueryLabelFilter, StopLabelFilter, StopWordLabelFilter

public abstract class SingleLabelFilterBase
extends AttrComposite
implements LabelFilter

A base for LabelFilter implementations that handle each label independently.

Field Summary

Fields inherited from class org.carrot2.attrs.AttrComposite

attributes

Constructor Summary

Constructors

Constructor	Description
SingleLabelFilterBase()

Method Summary

Modifier and Type	Method	Description
abstract boolean	acceptPhrase(PreprocessingContext context, int phraseIndex)	Should return true if the phrase located at phraseIndex is to be accepted, false otherwise.
abstract boolean	acceptWord(PreprocessingContext context, int wordIndex)	Should return true if the word located at wordIndex is to be accepted, false otherwise.
void	filter(PreprocessingContext context, boolean[] acceptedStems, boolean[] acceptedPhrases)	Called to perform label filtering.

Methods inherited from class org.carrot2.attrs.AttrComposite

accept

Methods inherited from class java.lang.Object

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

Constructor Details

SingleLabelFilterBase

public SingleLabelFilterBase()

Method Details

filter

public void filter(PreprocessingContext context, boolean[] acceptedStems, boolean[] acceptedPhrases)

Description copied from interface: LabelFilter

Called to perform label filtering.

Specified by:

filter in interface LabelFilter

Parameters:

context - contains words and phrases to be filtered

acceptedStems - the filter should set to false those elements that correspond to the stems to be filtered out

acceptedPhrases - the filter should set to false those elements that correspond to the phrases to be filtered out

acceptWord

public abstract boolean acceptWord(PreprocessingContext context, int wordIndex)

Should return true if the word located at wordIndex is to be accepted, false otherwise.

Parameters:

context - provides access to all information about the word

wordIndex - index of the word for which decision is to be made

acceptPhrase

public abstract boolean acceptPhrase(PreprocessingContext context, int phraseIndex)

Should return true if the phrase located at phraseIndex is to be accepted, false otherwise.

Parameters:

context - provides access to all information about the phrase

phraseIndex - index of the phrase for which decision is to be made