Example usage for java.lang StrictMath log

Introduction

In this page you can find the example usage for java.lang StrictMath log.

Prototype

public static native double log(double a);

Source Link

Document

Returns the natural logarithm (base e) of a double value.

Usage

From source file:ubic.gemma.ontology.GoMetric.java

/**
 * @return Jiang semantic similarity measure between two terms
 *///from   ww  w .j a  va  2 s . c  o m
private Double calcJiang(Double pmin, Double probM, Double probC) {

    double scoreJiang = 1
            / ((-1 * StrictMath.log(probM)) + (-1 * StrictMath.log(probC)) - (-2 * StrictMath.log(pmin)) + 1);

    return scoreJiang;
}

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From source file:ubic.gemma.ontology.GoMetric.java

/**
 * @return Lin semantic similarity measure between two terms
 *///w  w w  .  j a v a 2 s  .c o m
private Double calcLin(Double pmin, Double probM, Double probC) {

    double scoreLin = (2 * (StrictMath.log(pmin))) / ((StrictMath.log(probM)) + (StrictMath.log(probC)));

    return scoreLin;
}

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From source file:ubic.gemma.ontology.GoMetric.java

/**
 * @return Resnik semantic similarity measure between two terms
 *//*from ww w. j a v  a  2 s  .  com*/
private Double calcResnik(Double pmin) {

    double scoreResnik = -1 * (StrictMath.log(pmin));

    return scoreResnik;
}

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