edu.uci.jforests.eval.ranking

Class MAPEval

java.lang.Object

edu.uci.jforests.eval.EvaluationMetric

edu.uci.jforests.eval.ranking.RankingEvaluationMetric

edu.uci.jforests.eval.ranking.MAPEval

public class MAPEval
extends RankingEvaluationMetric

Nested Class Summary

Nested classes/interfaces inherited from class edu.uci.jforests.eval.ranking.RankingEvaluationMetric

RankingEvaluationMetric.SwapScorer

Constructor Summary

Constructors

Constructor and Description
MAPEval(int maxDocsPerQuery)

Method Summary

Modifier and Type	Method and Description
double[]	getMAP(double[] predictions, Sample sample, ScoreBasedComparator.TieBreaker tieBreaker)
RankingEvaluationMetric.SwapScorer	getSwapScorer(double[] targets, int[] boundaries, int trunc, int[][] labelCounts)
double[]	measureByQuery(double[] predictions, Sample sample)

Methods inherited from class edu.uci.jforests.eval.ranking.RankingEvaluationMetric

computeNaturalOrderScores, getParentMetric, measure

Methods inherited from class edu.uci.jforests.eval.EvaluationMetric

isFirstBetter, largerIsBetter

Methods inherited from class java.lang.Object

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

Constructor Detail

MAPEval

public MAPEval(int maxDocsPerQuery)
        throws java.lang.Exception

Throws:

java.lang.Exception

Method Detail

getMAP

public double[] getMAP(double[] predictions,
                       Sample sample,
                       ScoreBasedComparator.TieBreaker tieBreaker)
                throws java.lang.Exception

Throws:

java.lang.Exception

measureByQuery

public double[] measureByQuery(double[] predictions,
                               Sample sample)
                        throws java.lang.Exception

Specified by:

measureByQuery in class RankingEvaluationMetric

Throws:

java.lang.Exception

getSwapScorer

public RankingEvaluationMetric.SwapScorer getSwapScorer(double[] targets,
                                                        int[] boundaries,
                                                        int trunc,
                                                        int[][] labelCounts)
                                                 throws java.lang.Exception

Specified by:

getSwapScorer in class RankingEvaluationMetric

Parameters:

targets - Targets of all documents in dataset. Equals Dataset.*.length

boundaries - Start and end indices of each query within the dataset.

trunc - Truncation level for evaluation measure

labelCounts - How many of each label value

Throws:

java.lang.Exception - if things go pear shaped