org.apache.mahout.math.hadoop.similarity.cooccurrence.measures.CooccurrenceCountSimilarity Maven / Gradle / Ivy
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
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* See the License for the specific language governing permissions and
* limitations under the License.
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package org.apache.mahout.math.hadoop.similarity.cooccurrence.measures;
public class CooccurrenceCountSimilarity extends CountbasedMeasure {
@Override
public double similarity(double dots, double normA, double normB, int numberOfColumns) {
return dots;
}
@Override
public boolean consider(int numNonZeroEntriesA, int numNonZeroEntriesB, double maxValueA, double maxValueB,
double threshold) {
return numNonZeroEntriesA >= threshold && numNonZeroEntriesB >= threshold;
}
}