//?recommand.cpp?:?定義控制臺應用程序的入口點。
//

#include?“stdafx.h“
#include?
#include?
#include?
#include?“bmuav.c“
#include?“brmul.c“
#define?max（ab）????????????（（（a）?>?（b））???（a）?:?（b））

typedef?double?（*func）（double?*dataMatint?*overLap?int?n?int?count?int?item?int?j）;
typedef?double?（*Est）（double?*dataMat?int?user?func?simMeas?int?item?int?m?int?n）;

extern?void?brmul（double?*adouble?*bint?mint?nint?kdouble?*c）;
extern?int?bmuav（double?*aint?mint?ndouble?*udouble?*vdouble?epsint?ka）;
extern?void?matrix_reverse（double?*srcdouble?*destint?rowint?col）;

double?standEst（double?*dataMat?int?user?func?simMeas?int?item?int?m?int?n）;
double?svdEst（double?*dataMat?int?user?func?simMeas?int?item?int?m?int?n）;
double?cosSim（double?*dataMatint?*overLap?int?n?int?count?int?item?int?j）;
double?cosSim2（int?*dataMatint?*overLap?int?n?int?scale?int?item?int?j）;
double?ecludSim（double?*dataMatint?*overLap?int?n?int?count?int?item?int?j）;
double?ecludSim2（double?*dataMatint?*overLap?int?n?int?count?int?item?int?j）;
double?recommend（double?*dataMatint?n?int?m?int?user?func?simMeas=cosSim?Est?estMethod=standEst）;

int?_tmain（int?argc?_TCHAR*?argv[]）
{
	int?user;
	double?data[7][5]?=?{{4?4?0?2?2}
					{4?0?0?3?3}
					{4?0?0?1?1}
					{1?1?1?2?0}
					{2?2?2?0?0}
					{5?5?5?0?0}
					{1?1?1?0?0}};
	double?data_2[11][11]?=?{{2?0?0?4?4?0?0?0?0?0?0}
						{0?0?0?0?0?0?0?0?0?0?5}
						{0?0?0?0?4?0?0?1?0?4?0}
						{3?3?4?0?3?0?0?2?2?0?0}
						{5?5?5?0?0?0?0?0?0?0?0}
						{0?0?0?0?0?0?5?0?0?5?0}
						{4?0?4?0?0?0?0?0?0?0?5}
						{0?0?0?0?0?4?0?0?0?0?4}
						{0?0?0?0?0?0?5?0?0?5?0}
						{0?0?0?3?0?0?0?0?4?5?0}
						{1?1?2?1?1?2?1?0?4?5?0}};
	
	
	user?=?2;

????//recommend（&data[0][0]?5?7?user?cosSim?standEst）;
	//recommend（&data[0][0]?5?7?user?ecludSim?standEst）;
	//recommend（&data_2[0][0]?11?11?user?ecludSim2?svdEst）;
	recommend（&data_2[0][0]?11?11?user?cosSim2?svdEst）;
	return?0;
}

double?recommend（double?*dataMatint?n?int?m?int?user?func?simMeas?Est?estMethod）
{
	int?icount?itemj;
	int?*record=0;
	double?*temp_vote=0;
	double?temp=0?temp2=0;

	record?=?（int?*）malloc（sizeof（int）*n）;
	memset（record?0?sizeof（int）*n）;
	count?=?0;

	//尋找user用戶未評價物品
	for（i?=?0;i?	{
		if（dataMat[user*n+i]?==?0）
		{
			record[count++]?=?i;
		}
	}
	if?（count?==?0）
	{
		printf（“該用戶評價了所有的物品\n“）;
		return?-1;?//用戶評價了所有的物品
	}

	temp_vote?=?（double?*）malloc（sizeof（double）*count）;
	memset（temp_vote0sizeof（double）*count）;

	for（i=0;i	{
		item?=?record[i];
		temp_vote[i]?=?estMethod（dataMat?user?simMeas?item?m?n）;
	}

	//排序
	for（i=0;i	{
		for（j=0;j		{
			if（temp_vote[j]