Here you can find the source of gaussianPDF(double mean, double variance, double x)
public static double gaussianPDF(double mean, double variance, double x)
//package com.java2s; /**//from ww w. j av a2 s . c o m * Copyright 2014-2015 maochen.org * Author: Maochen.G contact@maochen.org * For the detail information about license, check the LICENSE.txt * <p> * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 3 of the License, or * (at your option) any later version. * <p> * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * <p> * You should have received a copy of the GNU General Public License * along with this program ; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA * <p> * Created by Maochen on 12/3/14. */ public class Main { public static double gaussianPDF(double mean, double variance, double x) { double twoVariance = 2 * variance; double probability = 1 / Math.sqrt(Math.PI * twoVariance); probability = probability * Math.exp(-Math.pow((x - mean), 2) / twoVariance); return probability; } }