ws.palladian.extraction.entity.tagger

Class StanfordNer

java.lang.Object

ws.palladian.extraction.entity.NamedEntityRecognizer

ws.palladian.extraction.entity.TrainableNamedEntityRecognizer

ws.palladian.extraction.entity.tagger.StanfordNer

All Implemented Interfaces:

Tagger

public class StanfordNer
extends TrainableNamedEntityRecognizer

This class wraps the Stanford Named Entity Recognizer which is based on conditional random fields (CRF).

The NER has been described in: Jenny Rose Finkel, Trond Grenager, and Christopher Manning; "Incorporating Non-local Information into Information Extraction Systems"; Proceedings of the 43nd Annual Meeting of the Association for Computational Linguistics (ACL 2005), pp. 363-370.

The following models exist already for this recognizer:

• Person
• Location
• Organization

Author:

David Urbansky

See Also:

Stanford NER CRF FAQ

Constructor Summary

Constructors

Constructor and Description
StanfordNer()

Method Summary

Modifier and Type	Method and Description
List<Annotation>	getAnnotations(String inputText)
String	getModelFileEnding()
String	getName()
boolean	loadModel(String configModelFilePath)
static void	main(String[] args)
boolean	setsModelFileEndingAutomatically()
boolean	train(String trainingFilePath, String modelFilePath)

Methods inherited from class ws.palladian.extraction.entity.TrainableNamedEntityRecognizer

getModelFileEndingIfNotSetAutomatically, oneModelPerConcept, train, train

Methods inherited from class ws.palladian.extraction.entity.NamedEntityRecognizer

evaluate, evaluate, evaluate, evaluate, getTaggingFormat, setTaggingFormat, tag

Methods inherited from class java.lang.Object

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

Constructor Detail

StanfordNer

public StanfordNer()

Method Detail

getModelFileEnding

public String getModelFileEnding()

Specified by:

getModelFileEnding in class TrainableNamedEntityRecognizer

setsModelFileEndingAutomatically

public boolean setsModelFileEndingAutomatically()

Specified by:

setsModelFileEndingAutomatically in class TrainableNamedEntityRecognizer

train

public boolean train(String trainingFilePath,
                     String modelFilePath)

Specified by:

train in class TrainableNamedEntityRecognizer

loadModel

public boolean loadModel(String configModelFilePath)

Specified by:

loadModel in class TrainableNamedEntityRecognizer

getAnnotations

public List<Annotation> getAnnotations(String inputText)

Specified by:

getAnnotations in interface Tagger

Specified by:

getAnnotations in class NamedEntityRecognizer

getName

public String getName()

Specified by:

getName in class NamedEntityRecognizer

main

public static void main(String[] args)
                 throws Exception

Parameters:

args -

Throws:

Exception