Java examples for java.lang:Math Trigonometric Function
Gets the gaussian pdf value constant term.
/**//from www .jav a 2s. com * Copyright 2004-2006 DFKI GmbH. * All Rights Reserved. Use is subject to license terms. * * Permission is hereby granted, free of charge, to use and distribute * this software and its documentation without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of this work, and to * permit persons to whom this work is furnished to do so, subject to * the following conditions: * * 1. The code must retain the above copyright notice, this list of * conditions and the following disclaimer. * 2. Any modifications must be clearly marked as such. * 3. Original authors' names are not deleted. * 4. The authors' names are not used to endorse or promote products * derived from this software without specific prior written * permission. * * DFKI GMBH AND THE CONTRIBUTORS TO THIS WORK DISCLAIM ALL WARRANTIES WITH * REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL DFKI GMBH NOR THE * CONTRIBUTORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF * THIS SOFTWARE. */ //package com.java2s; public class Main { /** * Gets the gaussian pdf value constant term. * * @param featureDimension the feature dimension * @param detCovarianceMatrix the det covariance matrix * @return the gaussian pdf value constant term */ public static double getGaussianPdfValueConstantTerm( int featureDimension, double detCovarianceMatrix) { double constantTerm = Math.pow(2 * Math.PI, 0.5 * featureDimension); constantTerm *= Math.sqrt(detCovarianceMatrix); constantTerm = 1.0 / constantTerm; return constantTerm; } }