Java 基于给定数组x和必须介于（0和x.length）之间的索引，生成介于0和1之间的双精度值

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//package com.nowjava;

/** 时代Java - N o w  J a v a . c o m 提 供 **/

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public class Main {

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    public static void main(String[] argv) throws Exception {

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        int index = 2;

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        double[] x = new double[] { 34.45, 35.45, 36.67, 37.78, 37.0000,

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                37.1234, 67.2344, 68.34534, 69.87700 };

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        System.out.println(softmax(index, x));

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    }

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    /**

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     * produces a double between 0 and 1 based on the given array x

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     * and the index that must be between (0 and x.length)

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     * For further information see also:

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     * http://www-ccs.ucsd.edu/matlab/toolbox/nnet/softmax.html

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     */

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    public static double softmax(int index, double[] x) {

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        double sum = 0;

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        for (int i = 0; i < x.length; i++) {

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