org.dkpro.core.lancaster

Class LancasterStemmer

java.lang.Object

org.apache.uima.analysis_component.AnalysisComponent_ImplBase

org.apache.uima.analysis_component.Annotator_ImplBase

org.apache.uima.analysis_component.JCasAnnotator_ImplBase

org.apache.uima.fit.component.JCasAnnotator_ImplBase

de.tudarmstadt.ukp.dkpro.core.api.featurepath.FeaturePathAnnotatorBase

org.dkpro.core.lancaster.LancasterStemmer

All Implemented Interfaces:

org.apache.uima.analysis_component.AnalysisComponent

public class LancasterStemmer
extends FeaturePathAnnotatorBase

This Paice/Husk Lancaster stemmer implementation only works with the English language so far.

Field Summary

Fields

Modifier and Type	Field and Description
protected String	language
static String	PARAM_LANGUAGE Specifies the language supported by the stemming model.
static String	PARAM_MODEL_LOCATION Specifies an URL that should resolve to a location from where to load custom rules.
static String	PARAM_STRIP_PREFIXES True if the stemmer will strip prefix such as kilo, micro, milli, intra, ultra, mega, nano, pico, pseudo.

Fields inherited from class de.tudarmstadt.ukp.dkpro.core.api.featurepath.FeaturePathAnnotatorBase

filterCondition, filterConditionOperator, filterConditionValue, filterFeaturePath, filterFeaturePathInfo, fp, PARAM_FILTER_CONDITION_OPERATOR, PARAM_FILTER_CONDITION_VALUE, PARAM_FILTER_FEATUREPATH, PARAM_PATHS, paths

Constructor Summary

Constructors

Constructor and Description
LancasterStemmer()

Method Summary

Modifier and Type	Method and Description
protected void	generateAnnotations(org.apache.uima.jcas.JCas jcas) Method to create annotations.
protected Set<String>	getDefaultPaths()
void	initialize(org.apache.uima.UimaContext aContext)

Methods inherited from class de.tudarmstadt.ukp.dkpro.core.api.featurepath.FeaturePathAnnotatorBase

initializeFeaturePathInfoFrom, process

Methods inherited from class org.apache.uima.fit.component.JCasAnnotator_ImplBase

getLogger

Methods inherited from class org.apache.uima.analysis_component.JCasAnnotator_ImplBase

getRequiredCasInterface, process

Methods inherited from class org.apache.uima.analysis_component.Annotator_ImplBase

getCasInstancesRequired, hasNext, next

Methods inherited from class org.apache.uima.analysis_component.AnalysisComponent_ImplBase

batchProcessComplete, collectionProcessComplete, destroy, getContext, getResultSpecification, reconfigure, setResultSpecification

Methods inherited from class java.lang.Object

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

Field Detail

PARAM_STRIP_PREFIXES

public static final String PARAM_STRIP_PREFIXES

True if the stemmer will strip prefix such as kilo, micro, milli, intra, ultra, mega, nano, pico, pseudo.

See Also:

Constant Field Values

PARAM_MODEL_LOCATION

public static final String PARAM_MODEL_LOCATION

Specifies an URL that should resolve to a location from where to load custom rules. If the location starts with classpath: the location is interpreted as a classpath location, e.g. "classpath:my/path/to/the/rules". Otherwise it is tried as an URL, file and at last UIMA resource.

See Also:

ResourceUtils, Constant Field Values

PARAM_LANGUAGE

public static final String PARAM_LANGUAGE

Specifies the language supported by the stemming model. Default value is "en" (English).

See Also:

Constant Field Values

language

protected String language

Constructor Detail

LancasterStemmer

public LancasterStemmer()

Method Detail

getDefaultPaths

protected Set<String> getDefaultPaths()

Overrides:

getDefaultPaths in class FeaturePathAnnotatorBase

initialize

public void initialize(org.apache.uima.UimaContext aContext)
                throws org.apache.uima.resource.ResourceInitializationException

Specified by:

initialize in interface org.apache.uima.analysis_component.AnalysisComponent

Overrides:

initialize in class FeaturePathAnnotatorBase

Throws:

org.apache.uima.resource.ResourceInitializationException

generateAnnotations

protected void generateAnnotations(org.apache.uima.jcas.JCas jcas)
                            throws FeaturePathException,
                                   org.apache.uima.analysis_engine.AnalysisEngineProcessException

Description copied from class: FeaturePathAnnotatorBase

Method to create annotations.

Specified by:

generateAnnotations in class FeaturePathAnnotatorBase

Parameters:

jcas - the JCas.

Throws:

FeaturePathException - if an error occurs during initialization of the FeaturePathInfo object

org.apache.uima.analysis_engine.AnalysisEngineProcessException - if another error occurs.