edu.northwestern.at.morphadorner.tools.taggertrainer

Class AbstractTaggerRule

java.lang.Object

edu.northwestern.at.morphadorner.tools.taggertrainer.AbstractTaggerRule

All Implemented Interfaces:

TaggerRule

public class AbstractTaggerRule
extends java.lang.Object
implements TaggerRule

Abstract Part of Speech Tagger rule.

This defines an interface for rule-based part of speech tag replacment in a tagged corpus. Each rule locates all the words in a corpus tagged with a specific original part of speech tag and satisfying a specific condition. When the condition is satisfied, the rule replaces the original tag with a replacement tag.

Field Summary

Fields

Modifier and Type	Field and Description
protected java.lang.String	originalTag The original tag which this rule may change.
protected java.lang.String	replacementTag The replacement tag which this rule may emit.

Constructor Summary

Constructors

Constructor and Description
AbstractTaggerRule()

Method Summary

Methods

Modifier and Type	Method and Description
int	applies(int site, java.util.List trainingData) See if this rule applies to a training site.
int	apply(int[] sites, java.util.List trainingData) Apply this rule to a a list of training sites.
boolean	apply(int site, java.util.List trainingData) Apply this rule to a specific training site.
int	apply(java.util.List trainingData) Apply this rule to all training data.
java.lang.String	getOriginalTag() Return original tag.
java.lang.String	getReplacementTag() Return replacement tag.

Methods inherited from class java.lang.Object

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

Field Detail

originalTag

protected java.lang.String originalTag

The original tag which this rule may change.

replacementTag

protected java.lang.String replacementTag

The replacement tag which this rule may emit.

Constructor Detail

AbstractTaggerRule

public AbstractTaggerRule()

Method Detail

apply

public int apply(java.util.List trainingData)

Apply this rule to all training data.

Specified by:

apply in interface TaggerRule

Parameters:

trainingData - Training data as a list.

Returns:

int count of sites to which rule was successfully applied.

apply

public boolean apply(int site,
            java.util.List trainingData)

Apply this rule to a specific training site.

Specified by:

apply in interface TaggerRule

Parameters:

site - Index (0-based) of training site at which to apply rule.

trainingData - Training data as a list.

Returns:

true if rule was successfully applied.

apply

public int apply(int[] sites,
        java.util.List trainingData)

Apply this rule to a a list of training sites.

Specified by:

apply in interface TaggerRule

Parameters:

sites - Indices (0-based) of training sites at which to apply rule.

trainingData - Training data as a list.

Returns:

count of sites to which rule was successfully applied.

applies

public int applies(int site,
          java.util.List trainingData)

See if this rule applies to a training site.

Specified by:

applies in interface TaggerRule

Parameters:

site - Index (0-based) of training site at which to check that rule applies.

trainingData - Training data.

Returns:

= -1: rule changes correct tag to incorrect. = 0: rule leaves correct tag alone, or rule does not apply to specified site. = 1: rule changes incorrect tag to correct.

getOriginalTag

public java.lang.String getOriginalTag()

Return original tag.

Specified by:

getOriginalTag in interface TaggerRule

Returns:

The tag which this rule may replace.

getReplacementTag

public java.lang.String getReplacementTag()

Return replacement tag.

Specified by:

getReplacementTag in interface TaggerRule

Returns:

The tag with which this rule replace the existing tag.