Get the weighted average of the scores computed. - Java java.lang

Java examples for java.lang:float

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Description

Get the weighted average of the scores computed.

Demo Code


import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;

public class Main{
    /**//from w  w  w .java  2 s  .co m
     * Get the weighted average of the scores computed.
     */
    public static double getWeightedScore(List<Double> scores,
            List<Double> scoreWeights) {
        double fscore = 0.0;
        if (scores == null || scores.size() == 0) {
            return fscore;
        }
        int nScores = scores.size();

        if (scoreWeights == null || scoreWeights.size() == 0
                || nScores != scoreWeights.size()) {
            return ((double) VectorUtils.sum(scores)) / nScores;
        }
        double tScoreWt = VectorUtils.sum(scoreWeights);
        for (int i = 0; i < nScores; i++) {
            fscore += (((double) scoreWeights.get(i)) / tScoreWt)
                    * scores.get(i);
        }

        return fscore;
    }
}

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