edu.columbia.cs.cg.prdualrank.inference.ranking.impl
Class FScoreBasedRankFunction<T>

java.lang.Object
  edu.columbia.cs.cg.prdualrank.inference.ranking.RankFunction<T>
      edu.columbia.cs.cg.prdualrank.inference.ranking.impl.FScoreBasedRankFunction<T>

public class FScoreBasedRankFunction<T>
extends RankFunction<T>

This class is used for our implementation of: "Searching Patterns for Relation Extraction over the Web: Rediscovering the Pattern-Relation Duality" . Y. Fang and K. C.-C. Chang. In WSDM, pages 825-834, 2011. For further information, WSDM 2011 Conference Website .

Description

Ranks objects based on their f-measure. Precision and recall values are already calculated. For more information about ranking, see Section 6 of the mentioned paper.

Since:

2011-10-07

Version:

0.1

Author:

Pablo Barrio, Goncalo Simoes

See Also:

WSDM 2011 Conference Website

Constructor Summary

FScoreBasedRankFunction(double beta)
Instantiates a new f score based rank function.

Method Summary

boolean	requiresPrecision() The ranking function has to inform if precision is required in its ranking function.
boolean	requiresRecall() The ranking function has to inform if recall is required in its ranking function.

Methods inherited from class edu.columbia.cs.cg.prdualrank.inference.ranking.RankFunction

rank, setPrecision, setRecall

Methods inherited from class java.lang.Object

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

Constructor Detail

FScoreBasedRankFunction

public FScoreBasedRankFunction(double beta)

Instantiates a new f score based rank function.

Parameters:

beta - the beta

Method Detail

requiresPrecision

public boolean requiresPrecision()

Description copied from class: RankFunction

The ranking function has to inform if precision is required in its ranking function.

Overrides:

requiresPrecision in class RankFunction<T>

Returns:

if the ranking function is based in precision

requiresRecall

public boolean requiresRecall()

Description copied from class: RankFunction

The ranking function has to inform if recall is required in its ranking function.

Overrides:

requiresRecall in class RankFunction<T>

Returns:

if the ranking function is based in recall