// BPLayer.h: interface for the CBPLayer class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_BPLAYER_H__A1AD2505_132E_11D5_92B2_E4EDA6A40E5F__INCLUDED_)
#define AFX_BPLAYER_H__A1AD2505_132E_11D5_92B2_E4EDA6A40E5F__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#include "Matrix.h"

class CBPLayer  
{
protected:
	void F(void);	//Y=F(V)
	CMatrix DeltaF();	//F'()
public:
	
	void ForWard(CMatrix & P1);//正向傳遞信息
	CMatrix BackWard(CMatrix & E);//誤差反向傳遞，返回前層誤差
	
	void initiate(unsigned int NumIn, unsigned int NumOut,unsigned int Mode, double l);
	
	double lr;//學習速度
	CMatrix *P;//輸入矩陣
	CMatrix W;//權系數矩陣
	CMatrix B;//偏差矩陣
	CMatrix V;//V=W*P+B
	CMatrix Y;//Y=F(V)
	//CMatrix dw;//dw=D*P'*lr
	//CMatrix db;//db=D*ones()*lr
	CMatrix D;//D=F'().*E

	enum FunctionMode
	{
		purelin=0x0,
		logsig=0x1,
		tansig=0x2
	}FunctionType;

	CBPLayer();
	virtual ~CBPLayer();

};


class CBPNet  
{
public:
	CEdit * m_message;
	void Train();
	void BackWard();
	void ForWard();
	void init(CEdit * edit_message,double m_lr,int m_num);
	CBPNet();
	virtual ~CBPNet();
	CMatrix P, T, Y, E;//輸入矩陣，期望輸出，實際輸出
	CBPLayer l1,l2;//兩層
	double sse;//輸出誤差
	double err_goal;//期望誤差
	double lr;//學習速率
	unsigned int max_epoch;//最大循環次數

};

#endif // !defined(AFX_BPLAYER_H__A1AD2505_132E_11D5_92B2_E4EDA6A40E5F__INCLUDED_)