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<DIV class=HtmlCode>
<

>// Genetic.cpp: implementation of the CGenetic class.
//
//////////////////////////////////////////////////////////////////////
<

>#include "stdafx.h"
<

>#include "Genetic.h"
#include"math.h"
#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif
/////张纯禹 2001年 <a href="mailtchunyu79@hotmail.com" target="_blank" >chunyu79@hotmail.com</A>
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
<

>CGenetic::CGenetic()
{pmutation=0.01;//变异概率
pcross=0.9;//交叉概率
maxgen=5000;//最大进化代数
iVarNo=0;//染色体数目
sumfitness=0.0;
gen=0;
IsSetScope=false;//还未设定个变量范围
IsStoped=false;
for(int i=0;i<MAXBESTNUM;i++)
bestchrom.fitness=0;; X+ s4 _! u( v
iBestNum=0;- @% L$ v9 {7 {, U; S
dblCre=0.0;+ i( |) }- G* r' B, ]. B; i
dblDifference=0.15;4 N; o5 d+ l7 e7 L% U9 i
best.fitness=0.0;/ x6 A# I0 i* }5 ~1 ~+ }# J m

* L4 j2 R$ [3 |( l+ ~, P initM(MATCOM_VERSION);% G5 ~, w7 }7 |* U3 F/ V! r9 q
}
9 P! A3 a: X1 n+ X9 g5 k* L: w<>CGenetic::~CGenetic()) _& ~; @5 j" C1 m
{exitM();
9 C3 d2 L! V3 m7 |* B}6 t* K, B" q6 N/ [7 P
<>int CGenetic::rselect()
- n- U0 `: R% j, C' ?{double rand1,partsum;! R, J; U2 i0 [6 c/ ]' J
int j=0;8 m" z* j( f1 N3 Z. T
partsum=0;' J& O* r& m- o3 P
rand1=rand()*sumfitness;' u9 x% q, v+ P: |
do{3 H( Y1 Z/ x7 n
 partsum=partsum+newpop[j].fitness;; ^2 Y9 n$ v+ h( S: Z
 j++;* m: ^. \" k2 m' Y
}while((partsum<rand1)&&(j&ltOPSIZE));
( l9 F" K* } u& G9 @" q return (j-1);8 G/ R5 }9 x! |4 v& D
}+ L/ O( r1 J" z: @5 O
<>void CGenetic::generation()
 l# f% O4 S# Q2 k{int i,r1,r2;) H& r& ?& H8 A3 c: L. {$ t9 l
CHROM tempChrom;
( D& O! ?% D% ?. \! x //进行统计，计算newpop单个染色体的适应度，选出最优染色体
/ U4 f) c8 Z9 o1 _( @& p statistic(newpop);( d1 r& y$ d$ ~- b H2 l) D) J! Y
//从1到POPSIZE循环，根据适应度选择，进行交叉，组成oldpop
! S! `& s. J. K$ ~) W for(i=0;i&ltOPSIZE;i+=2){
. p5 X. M0 H4 s) H r1=rselect();# J2 ^9 Z& c, E# ~
 r2=rselect();# C) W1 w& M6 N) H% T! n
 cross(newpop[r1],newpop[r2],i);6 e" E8 F! c& Z) G8 o/ {$ |
}" V$ e: M" F! F1 b; f
<> // oldpop,newpop进行调换: @; G2 |; k+ W" u! H; v
for(i=0;i&ltOPSIZE;i++){
( R% B- o- d1 J tempChrom=newpop;
: A: ]( G% Y( H ~ newpop=oldpop;/ S$ f; x7 a. b2 d2 U
 oldpop=tempChrom;7 e1 Y5 R- P+ q5 P! F1 a
}
; w6 n' E- e5 W5 X) X //从1到POPSIZE循环，对newpop进行变异
2 k' |4 p4 X- y2 ~ o2 x for(i=0;i&ltOPSIZE;i++)
4 ]$ _' o4 k! P) K& O5 C mutation(&newpop);' M# }1 Q2 K5 F# _; l) W* { Z7 x
}6 b" n6 I8 n6 C; S" _
<>bool CGenetic::begin()9 R6 `( \9 |6 e
{MSG msg;
 z) e- I, j6 q1 h0 n2 h mData=zeros(1,bpnet->iInput);0 K& j' r8 L F! j+ B* ^
mResult=zeros(1,bpnet->iOutput);
! ~8 {# G; k1 ?$ Z+ k8 Rfor(int i=gen;i<maxgen;i++)
, [6 }* [; ^; |+ H6 E& H{if(IsStoped)
% ~# C5 J, c+ V8 E+ x; i break;
( g& U9 ^3 w3 }0 P# w if(bpnet->iOutput>1){+ ?- e- W6 Z# N* t
::MessageBox(NULL,"目前只支持一个输出量!","错误",MB_OK);
# w, N2 n, O" t' ?" n2 e! t6 G3 d3 d return(false);8 D j8 ~+ v) B8 \& g+ j5 f
}
7 F# X, M* G0 y' m9 V0 \# D if(gen==0)
5 }3 M" M) @% a& `% @1 w$ T init();//如果刚开始运算，初始化5 w2 s, N! V, x9 d' s: k
generation();1 S% `; I" H" c4 G( Q% ~& N
gen++;
5 w" a9 T' {) s- Y0 H //防止假死机2 m/ P1 v5 B- R# ]: i7 L$ V6 I# m
:eekMessage(&msg,NULL,0,0,PM_REMOVE);
, X% w" `5 \9 h1 x :ispatchMessage(&msg);
% B0 Y, ]$ R/ }0 W+ T8 { msg.message=-1;" {' o6 @, Q/ [5 r; i3 U1 f
:ispatchMessage(&msg);//这样可以消除屏闪8 ^% V M" {' Z6 O& A$ c
}
. u9 j, ]8 u4 ~<>return(true);
+ {# p2 t, ]6 \}
. B& w0 C; o- E6 d" `<>
+ s# F* e6 u3 svoid CGenetic::cross(CHROM chrom1, CHROM chrom2, int iPlace)
{double c;; p! \) J8 n3 ?. A: C4 l" F# J
int i=0;/ d4 b5 ]# N, V, ?( C* N
//以交叉概率进行交叉，并对交叉后的新染色体进行判别' v; k. J0 d" P( D" V) I
//循环，直到产生合法的新染色体
, n/ A+ h- r' B; ~( r do{if(flip(pcross)){//交叉概率( ]/ I; U. |! h/ }7 X D
c=rand();
# {) X9 {& n0 \) Y for(i=0;i<iVarNo;i++){
 {. R" ~" }$ t {& | oldpop[iPlace].chrom=c*chrom1.chrom+(1-c)*chrom2.chrom;
8 b6 B! `+ \9 u% p+ Y- J; @/ w oldpop[iPlace+1].chrom=(1-c)*chrom1.chrom+c*chrom2.chrom;
% B) F% u1 W& I$ n" d9 p" ] }' s* b9 y8 N- Y
}
else//直接赋值，不再交叉
( m% i0 j0 o8 H! A0 I {oldpop[iPlace]=chrom1;* Y" j' z; L# P9 T: o1 V
 oldpop[iPlace+1]=chrom2;
$ X6 p; ~3 C; i+ S {$ R0 f }
& K5 _9 y$ U; l- g0 r; }" J}while(!identify(oldpop[iPlace])||!identify(oldpop[iPlace+1]));! C9 q, o" q, r
<>}
! }7 h; q6 i# b<>bool CGenetic::flip(double possibility)
% S6 q: Y8 |" G{double ppp;
$ a9 r4 Q, @+ z3 kppp=rand();$ h8 E* e5 X( m8 }
if(ppp<=possibility)0 {1 z3 C9 Y& I; c! [
return (true);
' i, w; s5 `9 E Relse
: B4 ?: y& P. o4 B% P3 v; z. r return (false);( C5 h+ B% W/ d7 R) E! ]* K! s
}
- x% r: Q4 P; m( J8 q+ K7 V<>void CGenetic::mutation(CHROM *chrome)) ]; [4 `' ]* l* [2 ` s7 W+ S# K
{double m=10;
: I6 b6 ~; H( {" W$ W. G* v int i=0;- k) N* L B" M+ n1 F( {0 f- L9 m
CHROM temp1,temp2;
9 x2 G2 [! z w ~4 T2 t9 _ if(flip(pmutation)){ //以变异概率进行变异) h" H! I. z: R* g
 do{ for(i=0;i<iVarNo;i++)- t5 j' V* H6 {! C- @6 x
 temp2.chrom=chrome->chrom;
' N5 z/ s" z" J$ {/ C% l for(i=0;i<iVarNo;i++): Q% e1 g2 }: b n. A
temp1.chrom=randxy(varminmax[0]-varminmax[1],varminmax[1]-varminmax[0])/10;
! h" p- X0 v0 ^# h3 S. f for(i=0;i<iVarNo;i++)
( z4 @ r8 u Q4 {' `% t2 n! V7 p temp2.chrom+=m*temp1.chrom;
* o/ g* H0 ]1 T' `: E& n) B% a if(!identify(temp2))
: w4 g7 D* _* i- G; [ m=(double)m/(double)(2.0);
$ S# ^) k. ]8 k }while(!identify(temp2));
# C* \4 E2 v; |5 s2 } }
 a1 x) Q5 S# i; l& U else{
, U$ f( C! b9 L% s3 \; d5 U for(i=0;i<iVarNo;i++)* ^. }: X6 j& _- z: |3 B+ v5 q) K
 temp2.chrom=chrome->chrom;/ w! j9 n$ }2 g0 @( u- Z
}
1 o O0 w' U) F0 p for(i=0;i<iVarNo;i++)6 {( b6 ~ v$ z! F; J+ @2 r$ W) z
 chrome->chrom=temp2.chrom;7 `! h8 e) a) r( `: F; c
}" O: t* ^6 P" u% U$ m Q8 s
<>void CGenetic::statistic(CHROM pop[])9 S! A" D, }0 d" T; H8 t0 ~
{int i;
* P5 Z5 Z4 h! ? sumfitness=0;& A! v# i: q. o3 N+ v$ L' h
//循环，计算单个染色体的适应度,以及sumfitness; l0 K0 J. b( A \: \; u
for(i=0;i&ltOPSIZE;i++){$ m5 B& |. U$ v! ~ e2 ^, t& s
pop.fitness=CalFitness(pop);
 m6 S Q% x0 F j8 l5 Z" K sumfitness+=pop.fitness;}: h/ g/ ?6 L* W& E0 B( f l
//选出符合条件的染色体
 [1 w5 B6 ?- n& C: p for(i=0;i&ltOPSIZE;i++){
+ q/ l9 X0 B- j if(pop.fitness>=dblCre&&IsNew(pop))% s) D, G- p4 y; @. A6 V
 bestchrom[iBestNum++]=pop;
% _( Q+ h6 D- L( A- C if(pop.fitness>best.fitness)9 G6 p5 J0 ]2 ~
 best=pop;//纪录最佳染色体
" ]" H1 F1 G/ Y5 ~. S}
3 A4 z1 ?1 s" r' k4 j/ A) `; W# U<>}% n1 M0 z8 ]' P R
<>void CGenetic::init()* T5 `+ L3 q! d/ \" c% y
{//对种群进行随机初始化$ k+ W, ~" M2 T5 k+ l
int i,j;
- z/ b2 c% ^2 Q, l* B. |srand( (unsigned)time( NULL ) );6 b* P' r2 ~; `& p1 x: G6 `0 c
<>if(iVarNo!=0&&IsSetScope)
2 y4 B, ~0 F8 ^. ?! ^/ h{for(i=0;i&ltOPSIZE;i++){5 `% C$ l3 M) i J& q: ?
for(j=0;j<iVarNo;j++){//在最值间随机赋值
: ]$ a- x$ J; ^1 V* o: b ~( H newpop.chrom[j]=randxy(varminmax[j][0],varminmax[j][1]);
2 i3 N0 {& @2 O; b, m; { oldpop.chrom[j]=newpop.chrom[j];" b! _) a5 V' K; V
}
* W7 ^/ M+ S; X3 |! U5 b$ n}& Y/ ~) I) r5 b3 z/ t# b/ k
}
& Z" K6 k0 w7 O% t: b7 s else
/ l( r4 W) E9 p$ r' N {if(iVarNo==0)::MessageBox(NULL,"变量数不能为0!","错误...",MB_OK);
3 j, c% ?# r" B! n+ l! E9 W2 S. B else if(!IsSetScope) ::MessageBox(NULL,"还未设置变量范围","错误...",MB_OK);
* ~& |! |8 z Q0 r/ ` }
+ X0 f# o2 G) F}2 M1 D7 p% Y1 Y y- Y" G2 ?# u* u

2 S$ v2 r3 c0 J( d8 ^<>double CGenetic::randxy(double x, double y), t b( W* t- h( a. O
{ return (x+(y-x)*rand());
: A; ?7 f* @8 k7 \+ ?<>}
- A9 T# f/ O/ z8 i; D<>void CGenetic::setscope(double scope[MAXVARNO][2], int iNo), W" F( E' l5 p) ?) `2 Z' w. p; F, B
{int i;
5 s: \! @5 R2 @" Rfor(i=0;i<iNo;i++)+ w2 m* s& b# \" N" M
{varminmax[0]=scope[0];//最小值
! e2 l& y- W v& _" h6 ?2 `) \ varminmax[1]=scope[1];//最大值: `+ ~0 d9 X4 g" U' z3 C
}
* m s; w' ^, T& l T mIsSetScope=true; " o( R2 W8 b7 W9 W. I
<>}/ L2 e8 Y7 r% L, r
<>double CGenetic::CalFitness(CHROM chrome)
! o2 G: V9 O7 a* b! E{ double dblResult;
) R! y& Z$ s+ }6 b int i;+ C3 U9 m* c( B
for(i=0;i<iVarNo;i++)
3 S2 z0 R. [" } mData.r(i+1)=chrome.chrom;
8 T. Q* M. u& {- p9 V u8 J! e mResult=bpnet->simulate(mData);
& b! n0 j, \8 c2 t. h dblResult=mResult.r(1);
- }$ M. L9 F s5 f return(dblResult);
) N0 k( s6 X0 ?% [6 M8 k}
1 c9 Y5 N7 T" M5 x
+ I9 O1 `" R. Jbool CGenetic::identify(CHROM chrome)
4 f& p8 q% m& D: y$ O{int i=0;
% |4 _0 U C$ G6 E3 ?& S8 u7 L- H( s bool IsOk=true;;
* @) v9 i7 Q3 v! @" ?2 a+ r1 ?% o: o for(i=0;i<iVarNo;i++){' ~6 {' O- O: l+ \' U6 K9 e( [
 if(chrome.chrom>varminmax[1]||chrome.chrom<varminmax[0])
( Z4 d) D% P$ s% c {IsOk=false;3 l6 M6 f# W* y
 break;}
: o: O; r) v. X6 E Y3 I }: r) B) P3 r; t. v" K4 |( J' L
return (IsOk);
# m+ R) c' K. [% {}
0 m/ {$ }9 m J+ {8 k$ V, F
4 l- ^1 A9 K$ m; Y" R' odouble CGenetic::difference(CHROM ch1, CHROM ch2)
: W0 c% D% U) l7 x" B! N{double differ,temp1=0.0,temp2=0.0,temp3=0.0,dblTemp1,dblTemp2;& z7 `' I8 P0 N' J. K
int i;
4 n& r" `9 v% `% d, w% ~7 q for(i=0;i<iVarNo;i++){
' y6 ]( g5 D- Y r% s dblTemp1=ch1.chrom/(varminmax[1]-varminmax[0]);( j' \/ H9 v' `
 dblTemp2=ch2.chrom/(varminmax[1]-varminmax[0]);1 ?* k# f( T2 W
 temp1=temp1+fabs(dblTemp1-dblTemp2)*fabs(dblTemp1-dblTemp2);" i j7 h" f4 P" B! V/ v/ N
 temp2+=dblTemp1*dblTemp1;8 l1 M3 j* w9 Z P( i! i
 temp3+=dblTemp2*dblTemp2;
$ [% x7 `2 Q2 I }
/ q' O# ~7 Y+ Z( F# b; K temp2=(temp2>temp3)?temp2:temp3;//取较大者. F9 Y" u' z5 t, w# [, d; G' @& K
differ=sqrt(temp1)/sqrt(temp2);
, \2 I9 J ?5 {: A7 J& o return (differ);
+ q- j8 M0 S3 ?( `9 H2 m, A}
$ _! T, z& v9 k$ Z; pbool CGenetic::IsNew(CHROM ch)
! W1 G. n) K5 x* R: j1 H{int i;3 G3 f& H; V9 Y2 J/ s6 T; h
bool IsDifferent;
* e6 j! O7 |) _( L* {2 I3 ? IsDifferent=true;
& @+ ]- U- o" N$ c1 j1 l2 U" P for(i=0;i<iBestNum;i++)0 [' C+ U( ]% d7 E4 l1 f
 if((difference(ch,bestchrom)<dblDifference)&&(angle(ch,bestchrom)<dblAngle))
- {1 q0 J0 @0 I/ [4 ]/ W# \ {IsDifferent=false;
6 t4 j% _- d; M/ y break;& W o9 f2 Z7 l, l: }( b
 }
) L- Y0 S6 f. yreturn (IsDifferent);
9 |1 K: v& ^! n% _}3 Q9 o$ L. b- t W( u2 K, ?
double CGenetic::angle(CHROM ch1, CHROM ch2)' u( o! I3 E' j( D
{double pi,temp1=0.0,temp2=0.0,temp3=0.0,dblCos=0.0,angle;
+ E* f% ^- B& D& K, S$ P int i=0;
8 W% l# d2 X; v# w8 `7 R double dblTemp1,dblTemp2;1 a6 j; L4 O, X& c4 G3 e! Y- k
for(i=0;i<iVarNo;i++)
0 F2 v( ]0 T' Z6 N3 b/ x! R+ ~ {dblTemp1=ch1.chrom/(varminmax[1]-varminmax[0]);
4 x, a. @ Q8 ?5 k dblTemp2=ch2.chrom/(varminmax[1]-varminmax[0]);, V, {- R- {) \' y, ~, {
 temp1+=dblTemp1*dblTemp2;
$ g: g9 r$ S% G7 x8 d8 D temp2+=dblTemp1*dblTemp1;
1 k* e& F- `) q2 H3 J; g- Z temp3+=dblTemp2*dblTemp2;. C- V( {0 n5 Q' B
}
4 T3 n8 g0 l2 n temp2=sqrt(temp2);
: ~6 j' `7 e$ [( E& K# u$ ] temp3=sqrt(temp3);
9 Y3 H3 {$ M2 {+ p# |8 I: N dblCos=temp1/(temp2*temp3);7 R/ S, h" y j1 G( W0 ]
pi=acos(-1.0);1 s! j( w; D6 D1 {! L2 ?
angle=acos(dblCos);
) I6 M7 e( L/ b( ^& }5 o5 E; y angle=(angle/pi)*180.0;//转化为角度
) y& M( {- l# @+ t return (angle);3 u7 K3 h @# e3 o j' M1 N
}</DIV>4 {' p& W @6 ?' d6 P. D
<DIV class=HtmlCode>! a; K9 P# I1 ]- H4 P# P# ~" ?
// Genetic.h: interface for the CGenetic class.
, z9 D+ m3 H2 K' ^) x$ T//
2 b: g* x8 V+ A" Y" z//////////////////////////////////////////////////////////////////////
" B5 M) u) h Z& J3 r5 Y7 ]#if !defined(AFX_GENETIC_H__72C36058_C073_487F_BD99_D8BD4A59EFF0__INCLUDED_)
- @% B8 m0 g0 N9 [8 Q$ M* R2 B#define AFX_GENETIC_H__72C36058_C073_487F_BD99_D8BD4A59EFF0__INCLUDED_
% }3 V: b9 L3 Z o#if _MSC_VER > 1000
# `4 ^/ L0 y1 l0 Q: |# E+ F4 a#pragma once% k% i4 Q5 j) H0 n3 ^
#endif // _MSC_VER > 1000* J) R2 H# g3 }9 N
#include"definition.h"5 w: n, d+ t+ F* A4 H; d, I5 b
typedef struct mychrom{
3 q" V1 e( }% m# o5 r+ Idouble chrom[MAXVARNO];
4 f* |! P |' {double fitness;//适应度0 i/ Y- d; x" C4 F# x- U
}CHROM;
' Y! Y- f& _' @' c9 C#include "BpNet.h"
1 v; i- L4 P; {; ^////////张纯禹 2001年 <a href="mailtchunyu79@hotmail.com" target="_blank" >chunyu79@hotmail.com</A>, z& B* J. o0 l h
class CGenetic
" z9 S7 O. H# F( }+ ^) d* E, j{5 {% b8 H* ~! E. O( n0 E! ?( t
public:
( J5 g/ w2 d/ C( i, t bool IsStoped;) l1 l( A$ x) ~9 x+ y
double dblAngle;
3 S7 {* a" R l" @& X/ U! s CHROM best;0 j% h! I: G- m L4 Q5 u
Mm mData,mResult;+ B3 ^& f! C) U0 p% @
double dblDifference;//差异〉改值的染色体视为不同
4 v* ~) j( T9 L" C, e/ h! r double dblCre;//适应度>改值的染色体符合条件
% o# v8 I9 F8 U) C2 U int iBestNum;//符合条件的染色体数目 l+ h: m2 w' Y# ]" z/ ?9 `
CBpNet * bpnet;
2 Q+ e, g' {: [! I //double (* obj_fun)();
4 j7 C/ G* B$ O0 v3 F# u" B) |$ K double CalFitness(CHROM chrome);//计算适应度函数* N ]- d( m' F! i! z" I
long gen;//当前进化代数& D0 }+ B0 ~5 B. ?" }* q
void setscope(double scope[MAXVARNO][2],int iNo);//设置染色体取值范围 T% a) @/ p3 n9 q3 ~3 z
double randxy(double x,double y);//产生x,y之间的随机数6 N3 r& S& H( J V
void statistic(CHROM pop[]);
& b- y w: g$ H$ R {& I CHROM bestchrom[MAXBESTNUM];//最优染色体
; ^: Q& @! b, H- ~ bool begin();//主函数: p# |! N: j% W7 O' K
void generation();//一次进化. R! ]) Y4 {3 N, E, G
int rselect();//轮盘赌选择 o8 ^; i \7 b8 k5 s" x
CHROM newpop[POPSIZE];//种群! [6 ^$ C1 F l! X! n' t: R
CHROM oldpop[POPSIZE];//种群5 T e9 m- g F) i; b, V
double pmutation;//变异概率6 W4 I( E# { |( ?0 c1 u! w
double pcross;//交叉概率. N7 d( ?* [( P( j" Y) q% Y8 d! V
long maxgen;//最大进化代数
, s+ w8 Y7 ~3 p7 A0 F5 Y int iVarNo;//染色体数目8 ~8 P4 i) T/ Q, Q8 c
double sumfitness;
$ }, i( w- L4 w CGenetic();" c% p& i% x, n# K4 r9 c4 Y7 T3 u
virtual ~CGenetic();
! f! O* |4 ~2 n2 }: Wprivate:
' |0 ] M6 ^0 y$ R4 } double angle(CHROM ch1,CHROM ch2);% E7 @/ x. |6 [: y
bool IsNew(CHROM ch);//判断是否为符合条件的新染色体
- a N/ y0 e1 i- }+ A double difference(CHROM ch1,CHROM ch2);//量个染色体之间的差异,用以区别. C" y l+ W: v; S8 z
 bool identify(CHROM chrome);//验证是否为合法的染色体$ L/ Z: {2 T; s/ J2 r9 f' B; O
double varminmax[MAXVARNO][2];* v& ~9 @/ }* s _' f
void init();//初始化，设置初始染色体8 V$ l# m2 e) c* ]: s: W1 n, V( t
void mutation(CHROM *chrome);//对新染色体进行变异
4 o; n0 _& P, `- V- A bool flip(double possibility);//测试
* P* S4 h3 X8 U5 J$ \; ^% A //交叉操作，iPlace指明新染色体位置6 x# q- b3 `" W) b/ I. n' X
void cross(CHROM chrom1,CHROM chrom2,int iPlace);
! y$ S. a, D3 r, z# [7 W bool IsSetScope;
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};
3 ?% S1 g: e- C3 s5 L2 m$ ^* | S9 y#endif // !defined(AFX_GENETIC_H__72C36058_C073_487F_BD99_D8BD4A59EFF0__INCLUDED_)
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