susff/main.cpp

#include <stdio.h>
#include <math.h>
#include <stdlib.h>
#include <time.h>


#define INNODE 2 // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ԫ<EFBFBD><D4AA><EFBFBD><EFBFBD>
#define HIDENODE 10 // <20><><EFBFBD>ز<EFBFBD><D8B2><EFBFBD><EFBFBD><EFBFBD>Ԫ<EFBFBD><D4AA><EFBFBD><EFBFBD>
#define OUTNODE 1 // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ԫ<EFBFBD><D4AA><EFBFBD><EFBFBD>


/**
 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѧϰ<EFBFBD>ʣ<EFBFBD>
 */
double StudyRate = 1.6;

/**
 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 */
double threshold = 1e-4;

/**
 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 */
int mostTimes = 1e6;

/**
 * ѵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С
 */
int trainSize = 0;

/**
 * <EFBFBD><EFBFBD><EFBFBD>Լ<EFBFBD><EFBFBD><EFBFBD>С
 */
int testSize = 0;

/**
 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 */
typedef struct Sample{
    double out[30][OUTNODE]; // <20><><EFBFBD><EFBFBD>
    double in[30][INNODE]; // <20><><EFBFBD><EFBFBD>
}Sample;


/**
 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ԫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 */
typedef struct Node{
    double value; // <20><>ǰ<EFBFBD><C7B0><EFBFBD><EFBFBD>Ԫ<EFBFBD><D4AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ
    double bias; // <20><>ǰ<EFBFBD><C7B0><EFBFBD><EFBFBD>Ԫ<EFBFBD><D4AA><EFBFBD><EFBFBD>ƫƫ<C6AB><C6AB>ֵ
    double bias_delta; // <20><>ǰ<EFBFBD><C7B0><EFBFBD><EFBFBD>Ԫ<EFBFBD><D4AA><EFBFBD><EFBFBD>ƫ<EFBFBD><C6AB>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ
    double *weight; // <20><>ǰ<EFBFBD><C7B0><EFBFBD><EFBFBD>Ԫ<EFBFBD><D4AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD>㴫<EFBFBD><E3B4AB><EFBFBD><EFBFBD>Ȩֵ
    double *weight_delta; // <20><>ǰ<EFBFBD><C7B0><EFBFBD><EFBFBD>Ԫ<EFBFBD><D4AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD>㴫<EFBFBD><E3B4AB><EFBFBD><EFBFBD>Ȩֵ<C8A8><D6B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ
}Node;

/**
 *  <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 */
Node inputLayer[INNODE];
/**
 * <EFBFBD><EFBFBD><EFBFBD>ز<EFBFBD>
 */
Node hideLayer[HIDENODE];
/**
 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 */
Node outLayer[OUTNODE];



double Max(double a, double b){
    return a > b ? a : b;
}

/**
 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>sigmoid
 * @param x <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ
 * @return <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ
 */
double sigmoid(double x){
    //<2F>벹ȫsigmod<6F><64><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    return 1 / (1 + exp(-x));
}


/**
 * <EFBFBD><EFBFBD>ȡѵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 * @param filename <EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD>
 * @return ѵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 */
Sample * getTrainData(const char * filename){
    Sample * result = (Sample*)malloc(sizeof (Sample));
    FILE * file = fopen(filename, "r");
    if(file != NULL){
        int count = 0;
        while (fscanf(file, "%lf %lf %lf", &result->in[count][0], &result->in[count][1], &result->out[count][0]) != EOF){
            ++count;
        }
        trainSize = count;
        printf("%s The file has been successfully read!\n", filename);
        fclose(file);
        return result;
    } else{
        fclose(file);
        printf("%s Encountered an error while opening the file!\n\a", filename);
        return NULL;
    }
}

/**
 * <EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD>Լ<EFBFBD>
 * @param filename <EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD>
 * @return <EFBFBD><EFBFBD><EFBFBD>Լ<EFBFBD>
 */
Sample * getTestData(const char * filename){
    Sample* result = (Sample*)malloc(sizeof(Sample));
    /*<2A><><EFBFBD>ڴ<EFBFBD><DAB4>з<EFBFBD><D0B7><EFBFBD><EFBFBD>㹻<EFBFBD>Ŀռ<C4BF><D5BC><EFBFBD><EFBFBD>洢һ<E6B4A2><D2BB>Sample<6C>ṹ<EFBFBD><E1B9B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8><EFBFBD>洢<EFBFBD><E6B4A2>result<6C><74><EFBFBD><EFBFBD><EFBFBD><EFBFBD>*/

   FILE * file = fopen(filename, "r");//<2F><><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>
   if(file != NULL){
    // <20><>ʼ<EFBFBD><CABC>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>count<6E><74><EFBFBD><EFBFBD><EFBFBD>ڸ<EFBFBD><DAB8>ٶ<EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
       int count = 0;
    /*<2A><><EFBFBD><EFBFBD>whileѭ<65><D1AD><EFBFBD>Ӳ<EFBFBD><D3B2>Լ<EFBFBD><D4BC>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֱ<EFBFBD><D6B1><EFBFBD><EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD>ļ<EFBFBD>ĩβ<C4A9><CEB2>
    ÿ<EFBFBD>γɹ<EFBFBD><EFBFBD><EFBFBD>ȡһ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݺ󣬵<EFBFBD><EFBFBD><EFBFBD>count<EFBFBD><EFBFBD>*/
       while (fscanf(file, "%lf %lf", &result->in[count][0], &result->in[count][1]) != EOF) {
           ++count;
       }
    //<2F><><EFBFBD><EFBFBD><EFBFBD>յ<EFBFBD>count<6E><74>ֵ<EFBFBD>洢<EFBFBD><E6B4A2><EFBFBD><EFBFBD>ΪtestSize<7A><65>ȫ<EFBFBD>ֱ<EFBFBD><D6B1><EFBFBD><EFBFBD>У<EFBFBD><D0A3>Ա<EFBFBD><D4B1><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9>
       testSize = count;
    printf("%s The file has been successfully read!\n", filename);
    fclose(file);
    //<2F><><EFBFBD><EFBFBD>result
    return result;
    
   }else{
        fclose(file);
        printf("%s Encountered an error while opening the file!\n\a", filename);
        return NULL;
    }
}

/**
 * <EFBFBD><EFBFBD>ӡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 * @param data Ҫ<EFBFBD><EFBFBD>ӡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 * @param size <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С
 */
void printData(Sample * data, int size){
    /*<2A>벹ȫ<EBB2B9><C8AB><EFBFBD><EFBFBD>*/
    for (int i = 0; i < size; i++) {
        printf("%lf %lf %lf\n", data->in[i][0], data->in[i][1], data->out[i][0]);
    }

}

/**
 * <EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 */
void init(){
    // <20><><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>е<EFBFBD><D0B5><EFBFBD><EFBFBD><EFBFBD>
    srand(time(NULL));
    
    // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD>ʼ<EFBFBD><CABC>
    for (int i = 0; i < INNODE; ++i) {
        inputLayer[i].weight = (double *)malloc(sizeof (double ) * HIDENODE);
        inputLayer[i].weight_delta = (double *) malloc(sizeof (double ) * HIDENODE);
        inputLayer[i].bias = 0.0;
        inputLayer[i].bias_delta = 0.0;
    }

    // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ȩֵ<C8A8><D6B5>ʼ<EFBFBD><CABC>
    for (int i = 0; i < INNODE; ++i) {
        for (int j = 0; j < HIDENODE; ++j) {
            inputLayer[i].weight[j] = rand() % 10000 / (double )10000 * 2 - 1.0;
            inputLayer[i].weight_delta[j] = 0.0;
        }
    }


    // <20><>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD>ز<EFBFBD><D8B2><EFBFBD><EFBFBD><EFBFBD>
    for (int i = 0; i < HIDENODE; ++i) {
        /*Ϊ<><CEAA><EFBFBD>ز<EFBFBD><D8B2>ڵ<EFBFBD> i <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB> double <20><><EFBFBD>͵<EFBFBD><CDB5><EFBFBD><EFBFBD>飬<EFBFBD><E9A3AC><EFBFBD>ڴ洢<DAB4>ýڵ<C3BD><DAB5><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ڵ㴫<DAB5><E3B4AB><EFBFBD><EFBFBD>Ȩ<EFBFBD>ء<EFBFBD>
        ʹ<EFBFBD><EFBFBD>malloc <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڶ<EFBFBD><EFBFBD>ڴ<EFBFBD><EFBFBD>з<EFBFBD><EFBFBD><EFBFBD><EFBFBD>㹻<EFBFBD>Ŀռ䣬<EFBFBD>Դ洢 OUTNODE <EFBFBD><EFBFBD> double <EFBFBD><EFBFBD><EFBFBD>͵<EFBFBD>Ȩ<EFBFBD><EFBFBD>ֵ<EFBFBD><EFBFBD>
        */
        hideLayer[i].weight = (double*)malloc(sizeof(double)*OUTNODE);
        /*Ϊ<><CEAA><EFBFBD>ز<EFBFBD><D8B2>ڵ<EFBFBD> i <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD>ڴ洢Ȩ<E6B4A2><C8A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD><EFBFBD>顣<EFBFBD><E9A1A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>齫<EFBFBD><E9BDAB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѵ<EFBFBD><D1B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ洢Ȩ<E6B4A2>صĸ<D8B5><C4B8><EFBFBD>ֵ<EFBFBD><D6B5>
        ʹ<EFBFBD><EFBFBD>malloc <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڶ<EFBFBD><EFBFBD>ڴ<EFBFBD><EFBFBD>з<EFBFBD><EFBFBD><EFBFBD><EFBFBD>㹻<EFBFBD>Ŀռ䣬<EFBFBD>Դ洢 OUTNODE <EFBFBD><EFBFBD> double <EFBFBD><EFBFBD><EFBFBD>͵<EFBFBD>Ȩ<EFBFBD><EFBFBD>ֵ<EFBFBD><EFBFBD>
        */
        hideLayer[i].weight_delta = (double*)malloc(sizeof(double) * OUTNODE);
        /*Ϊ<><CEAA><EFBFBD>ز<EFBFBD><D8B2>ڵ<EFBFBD> i <20><>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƫ<EFBFBD><C6AB>ֵ<EFBFBD><D6B5>
        <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵͨ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD> -1.0 <EFBFBD><EFBFBD> 1.0 ֮<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ýڵ<EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><EFBFBD>
        */
        hideLayer[i].bias = 0;
        /*<2A><>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ز<EFBFBD><D8B2>ڵ<EFBFBD> i <20><>ƫ<EFBFBD><C6AB>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD>ʼֵΪ0.0<EFBFBD><EFBFBD>*/
        hideLayer[i].bias_delta = 0.0;
    }

    // <20><>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD>ز<EFBFBD>Ȩֵ
    for (int i = 0; i < HIDENODE; ++i) {
        for (int j = 0; j < OUTNODE; ++j) {
            hideLayer[i].weight[j] = rand() % 10000 / (double )10000 * 2 - 1.0;
            hideLayer[i].weight_delta[j] = 0.0;
        }
    }

    for (int i = 0; i < OUTNODE; ++i) {
        outLayer[i].bias = rand() % 10000 / (double )10000 * 2 - 1.0;
        outLayer[i].bias_delta = 0.0;
    }
}

/**
 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ
 */
void resetDelta(){
    for (int i = 0; i < INNODE; ++i) {
        for (int j = 0; j < HIDENODE; ++j) {
            inputLayer[i].weight_delta[j] = 0.0;
        }
    }

    for (int i = 0; i < HIDENODE; ++i) {
        hideLayer[i].bias_delta = 0.0;
        for (int j = 0; j < OUTNODE; ++j) {
            hideLayer[i].weight_delta[j] = 0.0;
        }
    }

    for (int i = 0; i < OUTNODE; ++i) {
        outLayer[i].bias_delta = 0.0;
    }
}


int main() {
    // <20><>ʼ<EFBFBD><CABC>
    init();
    // <20><>ȡѵ<C8A1><D1B5><EFBFBD><EFBFBD>
    Sample * trainSample = getTrainData("TrainData.txt");
//    printData(trainSample, trainSize);


    for (int trainTime = 0; trainTime < mostTimes; ++trainTime) {
        // <20><><EFBFBD><EFBFBD><EFBFBD>ݶ<EFBFBD><DDB6><EFBFBD>Ϣ
        resetDelta();

        // <20><>ǰѵ<C7B0><D1B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
        double error_max = 0.0;

        // <20><>ʼѵ<CABC><D1B5><EFBFBD><EFBFBD><EFBFBD>ۼ<EFBFBD>bp<62><70>
        for (int currentTrainSample_Pos = 0; currentTrainSample_Pos < trainSize; ++currentTrainSample_Pos) {

            // <20><><EFBFBD><EFBFBD><EFBFBD>Ա<EFBFBD><D4B1><EFBFBD>
            for (int inputLayer_Pos = 0; inputLayer_Pos < INNODE; ++inputLayer_Pos) {
                inputLayer[inputLayer_Pos].value = trainSample->in[currentTrainSample_Pos][inputLayer_Pos];
            }

            /** ----- <20><>ʼ<EFBFBD><CABC><EFBFBD>򴫲<EFBFBD> ----- */
            for (int hideLayer_Pos = 0; hideLayer_Pos < HIDENODE; ++hideLayer_Pos) {
                double sum = 0.0;
                for (int inputLayer_Pos = 0; inputLayer_Pos < INNODE; ++inputLayer_Pos) {
                    sum += inputLayer[inputLayer_Pos].value * inputLayer[inputLayer_Pos].weight[hideLayer_Pos];
                }

                sum -= hideLayer[hideLayer_Pos].bias;
                hideLayer[hideLayer_Pos].value = sigmoid(sum);
            }

            for (int outLayer_Pos = 0;  outLayer_Pos < OUTNODE ; ++outLayer_Pos) {
                double sum = 0.0;
                for (int hideLayer_Pos = 0; hideLayer_Pos < HIDENODE; ++hideLayer_Pos) {
                    /*<2A><><EFBFBD><EFBFBD>ÿһ<C3BF><D2BB><EFBFBD><EFBFBD><EFBFBD>ز<EFBFBD><D8B2>ڵ<EFBFBD><DAB5><EFBFBD>value<75><65>Ȩֵ<C8A8>ij˻<C4B3><CBBB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӵõ<D3B5>sum*/
                    sum += hideLayer[hideLayer_Pos].value * hideLayer[hideLayer_Pos].weight[outLayer_Pos];
                }
                /*<2A><><EFBFBD><EFBFBD>sum<75><6D>ʹsum<75><6D>ȥƫ<C8A5><C6AB>ֵ; */
                sum -= hideLayer->bias;
                /*<2A><><EFBFBD><EFBFBD>sigmod<6F><64><EFBFBD><EFBFBD><EFBFBD>Եõ<D4B5><C3B5><EFBFBD>sum<75><6D><EFBFBD>м<EFBFBD><D0BC><EFBFBD>Ѽ<EFBFBD><D1BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ľ<EFBFBD><C4BD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD>Ӧ<EFBFBD><D3A6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڵ<EFBFBD>value(outLayer[outLayer_Pos].value)<29><>*/
                outLayer[outLayer_Pos].value = sigmoid(sum);
            }


            /** ----- <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ----- */
            double error = 0.0;
            for (int outLayer_Pos = 0; outLayer_Pos < OUTNODE; ++outLayer_Pos) {
                double temp = fabs(outLayer[outLayer_Pos].value - trainSample->out[currentTrainSample_Pos][outLayer_Pos]);
                // <20><>ʧ<EFBFBD><CAA7><EFBFBD><EFBFBD>
                error += temp * temp / 2.0;
            }
            
            error_max = Max(error_max, error);
            
            
            /** ----- <20><><EFBFBD>򴫲<EFBFBD> ----- */
            for (int outLayer_Pos = 0; outLayer_Pos < OUTNODE; ++outLayer_Pos) {
                double bias_delta = -(trainSample->out[currentTrainSample_Pos][outLayer_Pos] - outLayer[outLayer_Pos].value)
                        * outLayer[outLayer_Pos].value * (1.0 - outLayer[outLayer_Pos].value);
                outLayer[outLayer_Pos].bias_delta += bias_delta;
            }

            for (int hideLayer_Pos = 0; hideLayer_Pos < HIDENODE; ++hideLayer_Pos) {
                for (int outLayer_Pos = 0; outLayer_Pos < OUTNODE; ++outLayer_Pos) {
                    double weight_delta = (trainSample->out[currentTrainSample_Pos][outLayer_Pos] - outLayer[outLayer_Pos].value)
                                          * outLayer[outLayer_Pos].value * (1.0 - outLayer[outLayer_Pos].value)
                                          * hideLayer[hideLayer_Pos].value;
                    hideLayer[hideLayer_Pos].weight_delta[outLayer_Pos] += weight_delta;
                }
            }

            //
            for (int hideLayer_Pos = 0; hideLayer_Pos < HIDENODE; ++hideLayer_Pos) {
                double sum = 0.0;
                for (int outLayer_Pos = 0; outLayer_Pos < OUTNODE; ++outLayer_Pos) {
                    sum += -(trainSample->out[currentTrainSample_Pos][outLayer_Pos] - outLayer[outLayer_Pos].value)
                           * outLayer[outLayer_Pos].value * (1.0 - outLayer[outLayer_Pos].value)
                           * hideLayer[hideLayer_Pos].weight[outLayer_Pos];
                }
                hideLayer[hideLayer_Pos].bias_delta += sum * hideLayer[hideLayer_Pos].value * (1.0 - hideLayer[hideLayer_Pos].value);
            }


            for (int inputLayer_Pos = 0; inputLayer_Pos < INNODE; ++inputLayer_Pos) {
                for (int hideLayer_Pos = 0; hideLayer_Pos < HIDENODE; ++hideLayer_Pos) {
                    double sum  = 0.0;
                    for (int outLayer_Pos = 0; outLayer_Pos < OUTNODE; ++outLayer_Pos) {
                        sum += (trainSample->out[currentTrainSample_Pos][outLayer_Pos] - outLayer[outLayer_Pos].value)
                               * outLayer[outLayer_Pos].value * (1.0 - outLayer[outLayer_Pos].value)
                               * hideLayer[hideLayer_Pos].weight[outLayer_Pos];
                    }
                    inputLayer[inputLayer_Pos].weight_delta[hideLayer_Pos] += sum * hideLayer[hideLayer_Pos].value * (1.0 - hideLayer[hideLayer_Pos].value)
                                                                              * inputLayer[inputLayer_Pos].value;
                }
            }

        }


        // <20>ж<EFBFBD><D0B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><C7B7>ﵽ<EFBFBD><EFB5BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Χ
        if(error_max < threshold){
            printf("\a Training completed!Total training count:%d,  maximum error is:%f\n", trainTime + 1, error_max);
            break;
        }

        // <20><><EFBFBD><EFBFBD><EFBFBD>޷<EFBFBD><DEB7><EFBFBD><EFBFBD>ܣ<EFBFBD><DCA3><EFBFBD>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD>

        for (int inputLayer_Pos = 0; inputLayer_Pos < INNODE; ++inputLayer_Pos) {
            for (int hideLayer_Pos = 0; hideLayer_Pos < HIDENODE; ++hideLayer_Pos) {
                inputLayer[inputLayer_Pos].weight[hideLayer_Pos] += StudyRate
                                                                    * inputLayer[inputLayer_Pos].weight_delta[hideLayer_Pos] /
                                                                    (double) trainSize;
            }
        }

        for (int hideLayer_Pos = 0; hideLayer_Pos < HIDENODE; ++hideLayer_Pos) {
            hideLayer[hideLayer_Pos].bias += StudyRate
                    * hideLayer[hideLayer_Pos].bias_delta / (double )trainSize;
            for (int outLayer_Pos = 0; outLayer_Pos < OUTNODE; ++outLayer_Pos) {
                hideLayer[hideLayer_Pos].weight[outLayer_Pos] += StudyRate
                        * hideLayer[hideLayer_Pos].weight_delta[outLayer_Pos] / (double )trainSize;
            }
        }

        for (int outLayer_Pos = 0; outLayer_Pos < OUTNODE; ++outLayer_Pos) {
            outLayer[outLayer_Pos].bias += StudyRate
                    * outLayer[outLayer_Pos].bias_delta / (double )trainSize;
        }
    }

    // ѵ<><D1B5><EFBFBD><EFBFBD><EFBFBD>ɣ<EFBFBD><C9A3><EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD>Լ<EFBFBD>
    Sample * testSample = getTestData("TestData.txt");
    printf("The predicted results are as follows:\n");
    for (int currentTestSample_Pos = 0; currentTestSample_Pos < testSize; ++currentTestSample_Pos) {
        for (int inputLayer_Pos = 0; inputLayer_Pos < INNODE; ++inputLayer_Pos) {
            inputLayer[inputLayer_Pos].value = testSample->in[currentTestSample_Pos][inputLayer_Pos];
        }

        for (int hideLayer_Pos = 0; hideLayer_Pos < HIDENODE; ++hideLayer_Pos) {
            double sum = 0.0;
            for (int inputLayer_Pos = 0; inputLayer_Pos < INNODE; ++inputLayer_Pos) {
                sum += inputLayer[inputLayer_Pos].value * inputLayer[inputLayer_Pos].weight[hideLayer_Pos];
            }
            sum -= hideLayer[hideLayer_Pos].bias;
            hideLayer[hideLayer_Pos].value = sigmoid(sum);
        }

        for (int outLayer_Pos = 0; outLayer_Pos < OUTNODE; ++outLayer_Pos) {
            double sum = 0.0;
            for (int hideLayer_Pos = 0; hideLayer_Pos < HIDENODE; ++hideLayer_Pos) {
                sum += hideLayer[hideLayer_Pos].value * hideLayer[hideLayer_Pos].weight[outLayer_Pos];
            }
            sum -= outLayer[outLayer_Pos].bias;
            outLayer[outLayer_Pos].value = sigmoid(sum);
        }

        for (int outLayer_Pos = 0; outLayer_Pos < OUTNODE; ++outLayer_Pos) {
            testSample->out[currentTestSample_Pos][outLayer_Pos] = outLayer[outLayer_Pos].value;
        }
    }

    printData(testSample, testSize);
    
    return 0;
}