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Java Log类代码示例

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

本文整理汇总了Java中org.apache.commons.math3.analysis.function.Log的典型用法代码示例。如果您正苦于以下问题:Java Log类的具体用法?Java Log怎么用?Java Log使用的例子?那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。



Log类属于org.apache.commons.math3.analysis.function包,在下文中一共展示了Log类的8个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于我们的系统推荐出更棒的Java代码示例。

示例1: testComposeDifferentiable

import org.apache.commons.math3.analysis.function.Log; //导入依赖的package包/类
@Test
public void testComposeDifferentiable() {
    UnivariateDifferentiableFunction id = new Identity();
    Assert.assertEquals(1, FunctionUtils.compose(id, id, id).value(new DerivativeStructure(1, 1, 0, 3)).getPartialDerivative(1), EPS);

    UnivariateDifferentiableFunction c = new Constant(4);
    Assert.assertEquals(0, FunctionUtils.compose(id, c).value(new DerivativeStructure(1, 1, 0, 3)).getPartialDerivative(1), EPS);
    Assert.assertEquals(0, FunctionUtils.compose(c, id).value(new DerivativeStructure(1, 1, 0, 3)).getPartialDerivative(1), EPS);

    UnivariateDifferentiableFunction m = new Minus();
    Assert.assertEquals(-1, FunctionUtils.compose(m).value(new DerivativeStructure(1, 1, 0, 3)).getPartialDerivative(1), EPS);
    Assert.assertEquals(1, FunctionUtils.compose(m, m).value(new DerivativeStructure(1, 1, 0, 3)).getPartialDerivative(1), EPS);

    UnivariateDifferentiableFunction inv = new Inverse();
    Assert.assertEquals(0.25, FunctionUtils.compose(inv, m, id).value(new DerivativeStructure(1, 1, 0, 2)).getPartialDerivative(1), EPS);

    UnivariateDifferentiableFunction pow = new Power(2);
    Assert.assertEquals(108, FunctionUtils.compose(pow, pow).value(new DerivativeStructure(1, 1, 0, 3)).getPartialDerivative(1), EPS);

    UnivariateDifferentiableFunction log = new Log();
    double a = 9876.54321;
    Assert.assertEquals(pow.value(new DerivativeStructure(1, 1, 0, a)).getPartialDerivative(1) / pow.value(a),
                        FunctionUtils.compose(log, pow).value(new DerivativeStructure(1, 1, 0, a)).getPartialDerivative(1), EPS);
}
 
开发者ID:Quanticol,项目名称:CARMA,代码行数:25,代码来源:FunctionUtilsTest.java


示例2: log

import org.apache.commons.math3.analysis.function.Log; //导入依赖的package包/类
public Variable log(Transform transform, Variable numericVariable, Map<String, TransformOption> options) throws Exception {

        double[] rawData = numericVariable.getData();// check of <= 0
        if (numericVariable.calculateUnivariateStats().get(UnivariateStat.getStats().get("min")).get(0)[0] <= 0) {
            Transform scaleTransform = new Transform("scale", null, numericVariable, getStatLib());
            numericVariable = scaleTransform.transform();
            VariableDAO.getInstance().createVariableRow(numericVariable);
        }

        UnivariateDifferentiableFunction function = new Log();
        double[] logData = new double[rawData.length];
        for (int i = 0; i < rawData.length; i++) {
            logData[i] = function.value(rawData[i]);
        }

        Instances weka = new Util().createWekaData(logData, transform.toString());

        return new Variable(numericVariable, transform, transform.toString(), numericVariable.getLab(), logData, weka, numericVariable.getDateFormat(), VariableType.NUMERIC);
    }
 
开发者ID:williamClanton,项目名称:jbossBA,代码行数:20,代码来源:WekaApacheEngine.java


示例3: testInverse

import org.apache.commons.math3.analysis.function.Log; //导入依赖的package包/类
@Test
public void testInverse() {
    final UnivariateFunction inv = new Inverse();
    final UnivariateFunction log = new Log();

    final double lo = 12.34;
    final double hi = 456.78;

    final GaussIntegrator integrator = factory.legendre(60, lo, hi);
    final double s = integrator.integrate(inv);
    final double expected = log.value(hi) - log.value(lo);
    // System.out.println("s=" + s + " e=" + expected);
    Assert.assertEquals(expected, s, 1e-14);
}
 
开发者ID:Quanticol,项目名称:CARMA,代码行数:15,代码来源:LegendreTest.java


示例4: testInverse

import org.apache.commons.math3.analysis.function.Log; //导入依赖的package包/类
@Test
public void testInverse() {
    final UnivariateFunction inv = new Inverse();
    final UnivariateFunction log = new Log();

    final double lo = 12.34;
    final double hi = 456.78;

    final GaussIntegrator integrator = factory.legendreHighPrecision(60, lo, hi);
    final double s = integrator.integrate(inv);
    final double expected = log.value(hi) - log.value(lo);
    // System.out.println("s=" + s + " e=" + expected);
    Assert.assertEquals(expected, s, 1e-15);
}
 
开发者ID:Quanticol,项目名称:CARMA,代码行数:15,代码来源:LegendreHighPrecisionTest.java


示例5: createFunctions

import org.apache.commons.math3.analysis.function.Log; //导入依赖的package包/类
protected UnivariateFunction[] createFunctions() {
    return new UnivariateFunction[] {
        new Power(2.0), new Exp(), new Expm1(), new Log(), new Log10(),
        new Log1p(), new Cosh(), new Sinh(), new Tanh(), new Cos(),
        new Sin(), new Tan(), new Acos(), new Asin(), new Atan(),
        new Inverse(), new Abs(), new Sqrt(), new Cbrt(), new Ceil(),
        new Floor(), new Rint(), new Signum(), new Ulp()
    };
}
 
开发者ID:Quanticol,项目名称:CARMA,代码行数:10,代码来源:RealVectorAbstractTest.java


示例6: createFunctions

import org.apache.commons.math3.analysis.function.Log; //导入依赖的package包/类
private UnivariateFunction[] createFunctions() {
    return new UnivariateFunction[] {
        new Power(2.0), new Exp(), new Expm1(), new Log(), new Log10(),
        new Log1p(), new Cosh(), new Sinh(), new Tanh(), new Cos(),
        new Sin(), new Tan(), new Acos(), new Asin(), new Atan(),
        new Inverse(), new Abs(), new Sqrt(), new Cbrt(), new Ceil(),
        new Floor(), new Rint(), new Signum(), new Ulp()
    };
}
 
开发者ID:SpoonLabs,项目名称:astor,代码行数:10,代码来源:RealVectorAbstractTest.java


示例7: getTestStatistic

import org.apache.commons.math3.analysis.function.Log; //导入依赖的package包/类
/**
 * Get the Fisher test statistic X^2
 * @return The test statistic
 */
public double getTestStatistic() {
	Log log = new Log();
	double rtrn = 0;
	for(Double pval : individualPvals) {
		rtrn += log.value(pval.doubleValue());
	}
	return -2 * rtrn;
}
 
开发者ID:mgarber,项目名称:scriptureV2,代码行数:13,代码来源:FisherCombinedProbabilityTest.java


示例8: calculateC

import org.apache.commons.math3.analysis.function.Log; //导入依赖的package包/类
/**
 * Calculates c_n
 * @param n
 * @param epsilon
 * @param beta
 * @return
 */
private double calculateC(int n, double epsilon, double beta) {
    double gamma = calculateGamma(epsilon, beta);
    return (new Exp()).value(-1.0d * n * (gamma * (new Log()).value(gamma / beta) - (gamma - beta)));
}
 
开发者ID:arx-deidentifier,项目名称:arx,代码行数:12,代码来源:EDDifferentialPrivacy.java



注:本文中的org.apache.commons.math3.analysis.function.Log类示例整理自Github/MSDocs等源码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。


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