datafu.pig.text.opennlp

Class TokenizeME

java.lang.Object

org.apache.pig.EvalFunc<org.apache.pig.data.DataBag>

datafu.pig.text.opennlp.TokenizeME

public class TokenizeME
extends org.apache.pig.EvalFunc<org.apache.pig.data.DataBag>

The OpenNLP Tokenizers segment an input character sequence into tokens using the OpenNLP TokenizeME class, which is a probabilistic, 'maximum entropy' classifier.

Example:

 
 define TokenizeME datafu.pig.text.opennlp.TokenizeME('data/en-token.bin');

 -- input:
 -- ("I believe the Masons have infiltrated the Apache PMC.")
 infoo = LOAD 'input' AS (text:chararray);

 -- output:
 -- ({(I),(believe),(the),(Masons),(have),(infiltrated),(the),(Apache),(PMC),(.)})
 outfoo = FOREACH infoo GENERATE TokenizeME(text) as tokens;
 
 

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.pig.EvalFunc

org.apache.pig.EvalFunc.SchemaType

Field Summary

Fields inherited from class org.apache.pig.EvalFunc

log, pigLogger, reporter, returnType

Constructor Summary

Constructors

Constructor and Description
TokenizeME(java.lang.String modelPath)

Method Summary

Modifier and Type	Method and Description
org.apache.pig.data.DataBag	exec(org.apache.pig.data.Tuple input)
java.util.List<java.lang.String>	getCacheFiles()
org.apache.pig.impl.logicalLayer.schema.Schema	outputSchema(org.apache.pig.impl.logicalLayer.schema.Schema input)

Methods inherited from class org.apache.pig.EvalFunc

allowCompileTimeCalculation, finish, getArgToFuncMapping, getInputSchema, getLogger, getPigLogger, getReporter, getReturnType, getSchemaName, getSchemaType, getShipFiles, isAsynchronous, progress, setInputSchema, setPigLogger, setReporter, setUDFContextSignature, warn

Methods inherited from class java.lang.Object

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

Constructor Detail

TokenizeME

public TokenizeME(java.lang.String modelPath)

Method Detail

getCacheFiles

public java.util.List<java.lang.String> getCacheFiles()

Overrides:

getCacheFiles in class org.apache.pig.EvalFunc<org.apache.pig.data.DataBag>

exec

public org.apache.pig.data.DataBag exec(org.apache.pig.data.Tuple input)
                                 throws java.io.IOException

Specified by:

exec in class org.apache.pig.EvalFunc<org.apache.pig.data.DataBag>

Throws:

java.io.IOException

outputSchema

public org.apache.pig.impl.logicalLayer.schema.Schema outputSchema(org.apache.pig.impl.logicalLayer.schema.Schema input)

Overrides:

outputSchema in class org.apache.pig.EvalFunc<org.apache.pig.data.DataBag>