edu.illinois.cs.cogcomp.nlp.pmi

Class PMIHelper

java.lang.Object

edu.illinois.cs.cogcomp.nlp.pmi.PMIHelper

public class PMIHelper
extends Object

Constructor Summary

Constructors

Constructor and Description
PMIHelper(CachedNgramCounter ngrams)

Method Summary

Modifier and Type	Method and Description
double	getNPMI(String[] leftRight, String[] left, String[] right)
double	getNPMI(String leftRight, String left, String right)
double	getPMI(String[] leftRight, String[] left, String[] right) Use this funtion to include variants into the same bucket.
double	getPMI(String leftRight, String left, String right)
static void	main(String[] args)

Methods inherited from class java.lang.Object

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

Constructor Detail

PMIHelper

public PMIHelper(CachedNgramCounter ngrams)

Method Detail

getNPMI

public double getNPMI(String[] leftRight,
                      String[] left,
                      String[] right)

getNPMI

public double getNPMI(String leftRight,
                      String left,
                      String right)

getPMI

public double getPMI(String[] leftRight,
                     String[] left,
                     String[] right)

Use this funtion to include variants into the same bucket.

For example, say you want to PMI for "hair of girl" and want to include {"hair", "the hair"} to get counts for the left part, and {"girl", "the girl", "a girl"} for the right and all combinations for leftRight, you need to call

String[] leftRight = {"hair of girl", "hair of the girl", ..., "the hair of girl",...}; String[] right = {"girl", "the girl", "a girl"}; String[] left = {"the hair", "hair"} double pmi = getPMI(leftRight, left, right);

getPMI

public double getPMI(String leftRight,
                     String left,
                     String right)

main

public static void main(String[] args)