数学建模社区-数学中国
标题:
模拟退火算法代码
[打印本页]
作者:
下沙小僧
时间:
2014-8-21 23:45
标题:
模拟退火算法代码
[p=185, null, left]
T_max=input('please input the start temprature');
[p=185, null, left]
T_min=input('please input the end temprature');
[p=185, null, left]
iter_max=input('please input the most interp steps on the fit temp');
[p=140, null, left]
*
8 m/ p$ o; q* m
0 k+ _* ~* k3 A) G& T4 F- n: t
: v# m2 n# f/ |
' B0 G1 {, R) L( Y1 {' m$ \
2 J* z5 u6 t: Q @" a9 |9 t+ x
# K" m t# f* v
+ \ z/ g0 w7 f! u) m/ w' A9 P, Y
% p3 U; Q! r0 V3 i! E& ~0 i
/ `$ `1 J _: ?2 @# w: x
" E% j- v3 `! a. i1 T- p& q
7 ]$ M1 }% C- {8 t0 F2 i% ?
[p=185, null, left]
s_max=input('please input the most steady steps ont the fit temp');
[p=185, null, left]
T=T_max;
[p=185, null, left]
load d:\address.txt;
[p=185, null, left]
order1=randperm(size(address,1))';%
[p=185, null, left]
[size=174px]生成初始解。
! o5 F( Z* M+ n5 a7 f
[p=185, null, left]
plot(address(order1,1),address(order1,2),'*r-')
[p=185, null, left]
totaldis1=distance(address,order1);
[p=185, null, left]
while T>=T_min
# W; m. B% |% b* X2 o1 Y
! B8 T5 T( |6 o6 l. m2 d% A' p
2 E/ L7 F3 }$ W3 L' v
1 ~3 @1 z7 u& E3 B& \7 }
[p=185, null, left]
iter_num=1;
& T* r4 E5 _0 m$ a
/ }$ B' u- P" \ f! ~
# y: v% N5 e/ w. O- D
+ I0 r6 |7 P9 Y! V) H8 @8 ?
[p=185, null, left]
s_num=1;
: n# s" v1 i2 ?7 M' D( P
/ e6 Z( o. Q2 c2 x' W6 c" t) `4 m
8 z( Z4 p5 J! t( J% ^
2 F( M9 o( W ~7 z' O" S5 E5 T
' Z/ ~) {2 _. u2 f
" {' y7 H; k. \0 a6 w6 G/ a
[p=185, null, left]
plot(T,totaldis1)
+ o; [3 ^7 v e; i1 [3 u$ z9 O
5 j# r, |9 N$ n+ w
( l5 O& x: I0 j% N2 r7 i5 Q& Z, P
7 A, }/ W3 E: J& ^" U, l
[p=185, null, left]
hold on
" r* x0 j1 A3 U( a
* d+ M9 l5 O( g% e* M
5 b2 L& S) A- \8 C1 H
( b8 W! C- P& }, @: o' J
[p=185, null, left]
while iter_num<iter_max&s_num<s_max;
) s: P0 T; S1 N. Q$ i% g0 i' P
* D! J/ a9 c: n9 n" ~
" q" ~& H: G( `
8 S" p& R) s8 k
; P# Q/ C" V) z ~. w( Q6 ]
; F& F* Q8 z4 W! _$ E5 g: `
2 Z+ P- z- @$ ^& |7 t4 n! W! t9 r+ e
" i& c( u( c6 u- g
[p=185, null, left]
order2=exhgpath(order1);
- V7 f: e* d2 N) L9 a/ F
2 W9 o9 Q: v- Z o
: T6 [/ T2 y0 ]' l: y& |/ u
( g$ g( F% X* A( C6 L
5 X2 s3 x' l$ l7 ^- P; G# F
6 V1 @, o. `0 I, w. L
+ {; e' }0 W$ _( t$ Z9 X
/ B( X" [; X' L0 [/ ]! d
[p=185, null, left]
totaldis2=distance(address,order2);
* O/ {. c# R, I/ F& v+ f3 {+ J5 V: O
; \5 ]5 [, u. O. k: u5 e
- p% m: \ |' A, e! A5 d
% y9 P+ x3 t8 u$ H. r1 ?
7 N# A( s# E1 s( v6 D# C0 k) v# v1 \
; R" ]& I0 m, ~1 H* K
$ l! M$ a; `. S: E5 H& l2 |
3 |, I$ N. H" a5 x
[p=185, null, left]
R=rand;
4 R& I; U/ m- e/ Q
" z8 r- p$ W$ i; `# Q
3 D; `: x4 C: w# q
# C, O- |- r: a4 J; S0 |
' W# c% b6 x& E7 t
5 ? v' \9 n4 ^7 j
7 E) |+ o" S/ \# f* S
6 o+ w: C0 N! X# [3 \2 i+ V
[p=185, null, left]
DeltaDis=totaldis2-totaldis1;
1 Y# g+ u1 d9 I/ _
- x. b$ H: P4 n9 E8 F8 U) r4 V" \
+ D8 ?1 K5 k0 X6 { N1 z3 }
% L3 B2 I7 Q7 s& v% ?) m( O! m
6 U, t& x7 @+ ?- Q
8 z' F! R& }/ L- q) H8 t1 C8 I0 e
! Y# z q* X$ C7 c. r4 y
1 w7 }3 @& @/ U8 |
[p=185, null, left]
if DeltaDis<0;
4 Y# g/ t0 e& O- h# }* a
. S+ A$ n2 G3 J: D% B
; Y. e! A N% w) V d* l
9 ?+ S) K- U- j0 \' R
% e" C$ J% u- Y% Y
" ^3 |" `, |' f' S
( X; b* l8 q* I9 y1 }7 H# Q+ t: ?
$ ^6 F. ~8 O. r7 k# P4 n9 w
% S+ U( k) O0 ^ \, A3 B. q/ @
a+ A# h6 K4 i$ S7 A, h1 |
7 z( v# N, n" I4 Y2 n
! x6 O: H5 q& R& T
[p=185, null, left]
order1=order2;
. c9 Z2 h m/ n- J5 h/ R4 ]
8 g. E1 u. J4 U1 ~- g- l
4 g' }/ a8 c- u3 R& d3 N
* r( D6 e" d8 Z
, w4 C) }8 N. C4 w% }2 x
/ F8 ]- y" [4 n. q
+ E+ D: m0 n- H# z q. s
" h I! J- o# m1 R
+ ?5 k9 E2 M: l8 P6 N- l
4 K) ^1 J1 ]! W- L6 z
: P9 G" T2 L- N' W: _
: @. F5 O5 S2 L" _# \; f
5 W/ Y" h; h* H) t
[p=185, null, left]
totaldis1=totaldis2;
( K& Q3 z/ A" k+ b0 o& O* f8 ?
/ Y: Z5 z' n& \( [' e7 K; |
# E& q, G9 t; N1 m
9 O1 [$ ]4 R. E4 W7 E
. R' r( m- ~" `4 T$ u* D
9 {+ u! v# V5 U" q' h1 x
F2 T# B! Z0 ^( ] w f9 _
& X- p! v- E5 p
[p=185, null, left]
elseif (exp((totaldis1-totaldis2)/(T))>R)
8 U) `' I# @# G/ ?9 I6 m% c: E
: i3 u" K/ h9 W* n& n9 D
5 C. ?' }/ k) M4 y* {, T9 s! y
0 ]4 i$ P* z* G/ z
3 H6 J% M6 d& _5 N; m' i
! N9 s) Y: {1 e0 L1 y6 x' {
& C3 n$ X: ?) D- b; w
; G) m6 ^/ C. M+ T
7 L. r4 N" c& Z$ h+ G/ e) C. ]
" C- I: M- ?8 v8 t4 @
2 u+ X; k0 f2 ~6 S T- P: X* Q
. s1 B7 F1 a; ^: V# C
[p=185, null, left]
order1=order2;
& l( d+ x; m3 m
. P6 C4 n5 S) J/ w( ]. w$ A
% V2 Y& ?8 j8 x" C
( I3 q! w4 @, V
9 x1 P2 K% G8 H* b: [
4 M5 V, \. Y8 h$ h6 Q; X
- B& z& ? e9 t& T3 K6 v$ f
2 P5 ?4 K/ l+ |( l' H
& G3 C3 X9 T; w
8 Y# ]: e4 p1 G3 r
v7 `# A1 f/ J) V* y; M
- z1 `2 ~) J2 w0 `8 \, v: L* ?& K
[p=185, null, left]
totaldis1=totaldis2;
2 O4 X) ?5 J5 J# r% J) C/ H2 C8 J
, N" J1 L2 U* X, i* J9 f4 j, {7 U
' m& `( j; U7 Z# U/ C' L
! |( W4 K! @ T9 M" q
* {9 O$ r. h- K: a; n3 b
4 {/ R- n( M. Z [) A6 K& G
2 A) D8 ?& ]% t
& p- G# e z) Y% j1 m7 s* O! R
, G$ e2 `4 L( n+ V0 u
2 ~; n$ S& G$ x: H) d* u% |7 U4 i
8 B/ L) I' n0 w h( @, j, u
% }* P7 _* R: \' \& B$ C; A
) B- n; W% V0 q' k A
* F9 V$ O1 v+ k0 L: I$ T
& ~+ Z U! w$ U) S' ^9 T" @
$ |) _/ r- _2 }) {! o) G
& ?! h: t- f1 Q" R0 P/ m
5 q$ M. ]/ ~7 _( B; e% |
8 B. X$ h6 K& }, A& U' f. V
[p=185, null, left]
[size=174px]else s_num=s_num+1;
- u# B3 Q3 l" ?5 ~
* i9 Q0 w. o" J J! R, Q
6 d9 s+ x" E5 E" B$ i: X4 T
" W+ K& _) ^2 s% ]6 U
1 j' L/ Z( `) E& j' q3 S4 F ]
: P- T. | @% w+ W& d4 P$ _
8 }9 [' j! u0 w% T4 l
q8 r; L: B$ K% N; o6 u
[p=185, null, left]
[size=174px]end
5 z, C6 | s4 O9 x5 } t
7 I# L, v$ Q1 O/ G9 e" a
* O4 g: V5 x7 {9 p/ z; T
% A* U6 q8 ?/ F% t! V6 k
2 O* o8 b% \+ A# B# N* l
- B- u. U" U) Q2 X" \7 C
2 B' I3 Q% _0 S3 N9 s3 c1 c
6 T! v" b3 A8 E
[p=185, null, left]
[size=174px]iter_num=iter_num+1;
: @' R. j. y. _( j! t
$ ?0 T h+ V3 b* x
! |7 ^. `" c, T/ u
4 ~+ O3 c: q$ v* a6 j5 X
[p=185, null, left]
[size=174px]end
1 j$ r) ~2 S" M+ z) s
8 U$ `; G% Y! u; G
9 x1 j) Y( v: d
7 Q$ O2 u. B" |8 `! {8 M- [
[p=185, null, left]
[size=174px]T=T*0.99;
[p=185, null, left]
[size=174px]end
[p=185, null, left]
[size=174px]order1
[p=185, null, left]
[size=174px]totaldis1
[p=185, null, left]
[size=174px]figure(2)
[p=185, null, left]
[size=174px]plot(address(order1,1),address(order1,2),'*r-')
% M" a. G9 w8 Y- g0 Q( g9 ~$ |
# \6 s* L9 B3 u; s5 U
) T ]8 W7 I Y9 V# r3 \
; L: o# f9 E. k) B) o/ b2 l
% t; g7 p2 ?/ C3 T' g1 u: @
% Z, y7 V: D7 [9 G6 c- V N: u! I
3 q( X& D$ l# H4 c: v0 R
' X. B% \: c7 r3 V# I
$ k- j% ^, w$ S* z3 H
作者:
yuzhenbo1995
时间:
2014-8-23 10:34
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~·
作者:
戴上耳机
时间:
2014-9-1 09:11
水仙花他要看见人
欢迎光临 数学建模社区-数学中国 (http://www.madio.net/)
Powered by Discuz! X2.5