设为首页收藏本站

最大的系统仿真与系统优化公益交流社区

 找回密码
 注册

QQ登录

只需一步,快速开始

查看: 12444|回复: 10

[交流] 关于turtle的使用问题

  [复制链接]
发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:* R* u; x5 G# _$ p
to do-business / X8 H7 ~: ?5 n) C7 I
rt random 360
- o, t% R; \. E- F" [ fd 1$ [" x+ E0 l" W
ifelse(other turtles-here != nobody)[4 |8 h/ ^* \; ]4 f6 w! s7 e
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.' p( R) a- F  e- W" k9 I
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    & \: f/ I2 I' J0 @1 {
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
" G: V# |) {9 E& `& n4 g   set [trade-record-one-len] of self length [trade-record-one] of self
6 x6 y* `/ X  e" R. K1 s5 t+ a   set trade-record-current( list (timer) (random money-upper-limit))
( R+ |* G+ ]& g. j" m, Z1 v, a8 W' N! W  k/ Z
问题的提示如下:6 v! J2 @$ c5 O0 I5 a
2 l( T! L3 ~5 l! E
error while turtle 50 running OF in procedure DO-BUSINESS) X& A  G+ d! A) ~
  called by procedure GO
0 h) o# ^* I% P+ p/ MOF expected input to be a turtle agentset or turtle but got NOBODY instead.+ A0 @  P* \: i' P' h& ~# ^  w
(halted running of go)+ e' U9 Z! M/ v" A
. Y! x! t2 X7 A: S: |, |
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~7 _1 ^% H" D1 R' g; k# }
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

本帖子中包含更多资源

您需要 登录 才可以下载或查看,没有帐号?注册

x

评分

参与人数 1仿真币 +30 +2 收起 理由
booblu + 30 + 2

查看全部评分

发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教- }0 f6 u+ o% C" d* ^- `$ N$ N/ u! d# E
globals[$ m/ w4 m" q& `! e6 y
xmax
% d3 D0 S' W6 \, P8 j. C0 `ymax
8 H. a, n( @* `6 K$ Cglobal-reputation-list
& Q; {! p3 E" f( A  J" U, r. S
$ [# X3 O* y+ b1 y;;
每一个turtle的全局声誉都存在此LIST
8 V9 O; Y& g. [9 ]& p! \credibility-list
4 `3 |0 p  b4 R: s7 e* t;;
每一个turtle的评价可信度
8 y9 U3 u( Y/ _5 e* e4 }honest-service' X" @% O/ O# t9 y
unhonest-service5 N/ c0 q: Z4 U% z2 L; W! v* E
oscillation
( W6 h/ d* G0 d, j4 k% Y4 e( {rand-dynamic
5 }0 I4 [6 ]1 T" p' h! a]
4 P, o2 t2 |# _8 G
: I2 y  ~/ Q8 q4 {5 fturtles-own[+ G  x. _: @: d% {/ c
trade-record-all
$ Q+ U' U: Y) P) Z' i;;a list of lists,
trade-record-one组成" U' `1 L$ g+ b6 G( W1 K
trade-record-one
& h  W# ^+ f% V& \: e;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录' Y4 G4 B& y; n" [7 \& M. h- }' e

& F% _/ z- @" u1 ~7 d/ _% B2 G;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
* Q5 k% F0 n" @7 M6 d- g4 P& Strade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]( ~8 ~3 ]: u* {1 U( u/ a
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list" q- G, Q8 h0 d% {+ H$ i9 A9 X
neighbor-total: j5 A- @' p" D& n
;;
记录该turtle的邻居节点的数目6 s0 _5 \3 s8 q+ [9 U# r' _7 Y6 g
trade-time" W$ J4 j9 L# \* c. g
;;
当前发生交易的turtle的交易时间( e# O1 [* ^7 B7 L3 t) o
appraise-give
% ?6 ^1 u4 m: N+ `9 V6 z3 p;;
当前发生交易时给出的评价: i& S/ c3 F3 o
appraise-receive
9 }1 L7 a4 h4 C;;
当前发生交易时收到的评价
& Q$ Z. e1 r$ I, F6 f. k1 wappraise-time
2 t7 a  ?2 o+ M1 K7 R3 E;;
当前发生交易时的评价时间
  {  A# |  C2 Q* V/ Dlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉  ]6 N, M0 }5 e/ {3 P
trade-times-total; E; M3 Z+ d/ O  f0 N: o$ B
;;
与当前turtle的交易总次数
- A+ y1 _/ |9 O. Xtrade-money-total- A. B3 g; q( [( t5 g0 d
;;
与当前turtle的交易总金额+ K' m; H: f% U% Y3 m! c
local-reputation/ X- v4 I& U9 R) n$ l9 Z- Y- k& ^4 I
global-reputation9 X' {! D3 c8 h2 v; Q: T
credibility
3 V  X% f4 l: {. d;;
评价可信度,每次交易后都需要更新
8 m% w" D" l- c& Zcredibility-all8 n( l3 f. [, Q: M
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据
+ X* ~+ k' I& e6 d! l4 J
3 a" Z9 [& S9 {2 I;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5! X9 N$ K, D5 B' J* z0 }: y
credibility-one" W! r! o) j. A) ^' n0 ~
;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
2 H) u( h0 k  R+ rglobal-proportion- S& M- v, _  E4 D& T
customer# h) s; o8 ^1 y" Q" z; l* Y# j
customer-no% ~7 L6 S% i" v: q
trust-ok
+ o8 b4 \6 w" K' [) [5 E8 @4 atrade-record-one-len;;trade-record-one的长度
# f; V1 l7 X/ K5 ]# c9 C]
- d% _- j: u3 X; w$ c. O) F! M6 h9 h* X3 [9 x
;;setup procedure, I# w' G4 G& G: }

0 ]( m& n& E. \6 t$ l/ e4 uto setup0 Y. h& k) n* \% ?) Z& b- m5 X

, S9 ~7 h: K: X; R4 [+ Dca

+ W5 B8 e2 Q1 U3 D
. j* ?8 \- E6 j: d3 Winitialize-settings
& Q0 y+ g% p$ u: z7 V8 o% z$ `
1 R% T  g8 C) X/ D: C
crt people [setup-turtles]

( s3 y0 N" z- h% u  H+ E# F
# ~9 t% q8 c0 g+ g  }) yreset-timer

1 H1 U' b# l  h$ X' s$ d: b! I- N4 r  R- E7 B) X, a5 ~4 ~
poll-class

/ N+ s4 f5 n- E
) H; O/ H) K. ?setup-plots
5 I7 L. `" W  Z

. r/ D0 |5 x; u5 Xdo-plots

) o3 v" w: c; C- k; Oend9 h' n. Z! }+ s, ?: R& C" }1 r* w% I

/ ~  y9 e- X/ _& ato initialize-settings
1 ^$ x& ?$ H+ E$ j1 v! I" w# x$ s: R( o7 D
set global-reputation-list []

* }2 S- d4 Z: V4 Q& A" p
/ Q6 n1 l$ o7 S: _7 T+ a4 ^3 Vset credibility-list n-values people [0.5]
1 M/ h6 p) @/ A& L' T
; a/ P' P: p/ H
set honest-service 0
: H% E/ |* p' G) s& x
1 q8 _) V7 T0 q6 P
set unhonest-service 0

  W0 u. T$ q- f  k
: A- e  D# f5 hset oscillation 0
1 N, B7 ]7 o( }9 l" l2 c
6 y: r! h3 N, d" h2 @: G
set rand-dynamic 0
& E) e+ p5 ?9 @* ?0 r
end6 [4 ?* Y. K0 F1 @1 V7 U, q7 [/ L
: `$ V# a1 \: g( Y4 C! u9 p
to setup-turtles
" q8 k8 Z* ?8 x% S( y6 e6 k1 eset shape "person"
! J! S9 m: k8 e  }setxy random-xcor random-ycor4 c8 e) L; x8 N  ~8 Z. U9 A/ n
set trade-record-one []
3 ?7 G# L" k$ P9 D* V

0 Z7 ?8 r* c1 t) N: N- i+ Vset trade-record-all n-values people [(list (? + 1) 0 0)]
. L  W; N: ~% e; X# j

. {. h8 E3 ~1 G7 |set trade-record-current []
6 W6 B, X1 Q+ G9 H0 P4 e# W) eset credibility-receive []- K) P* u1 q' r4 K; ]; H. B
set local-reputation 0.5
! Y! d  q2 b+ ?. wset neighbor-total 0, O7 N8 W! G2 D+ g& S
set trade-times-total 0: J$ J' R/ H9 G# E
set trade-money-total 08 d& b9 J6 ~0 \9 m. }) t
set customer nobody
( k8 e$ I. i* i0 W8 M! ~# ?set credibility-all n-values people [creat-credibility]
3 ~  H% r' p! Nset credibility n-values people [-1]6 x- y: ^6 t# O6 u
get-color
3 U8 E; D, ], m+ L- e

4 q1 ]/ G) Z( dend7 a/ h) V! Z3 b0 p
% |) c) T- M3 c. t8 U
to-report creat-credibility
$ p; x5 ?, c; L" B! |: ~report n-values people [0.5]# l8 _* [% _- v
end: v- J: \& c5 M1 X' R
, E) j  b1 r3 L3 W" w% q
to setup-plots- d9 H7 O( I0 y$ C2 n3 p
4 v. _4 A5 [& B
set xmax 30

- \# u% [$ J& R# x- i
- p- e/ p/ j9 q! C7 J" Rset ymax 1.0

# {/ y& l$ R6 D6 l5 G& z) J! d# D3 p8 {
clear-all-plots
8 T  q+ ?( E# ^% u# G
9 N) ^, g: }. c# U7 \4 K1 b4 Q& B
setup-plot1
3 K& g  k! j% W! ?% }
: ~! ?$ {/ |8 d" V' O1 o& o
setup-plot2

5 c! V) ]5 x4 R0 o" s' n# i0 L1 F4 F& P1 J+ k3 }, ^/ D: x( Y/ R
setup-plot3

6 b- m* s- ^! J. R# X. }end
# w1 [: `. U8 {& b- Y9 [. |
; E8 j; Q. {6 z: r;;run time procedures8 Y4 E  {6 i3 B7 A  p5 ?2 t/ J

% L9 m0 C- H1 c: J9 Gto go; A( J9 m# {, `& ?$ \

# X- W7 T4 c# N, A$ a' ~ask turtles [do-business]

; ~: {2 x2 k; Rend3 ]0 U( u" H& n8 A  h5 E. _

7 i; C- Z* D+ |5 sto do-business 2 N) u) e6 _/ }' h' c6 K0 P

2 E3 a* ^- B" r2 v5 y  N4 t+ M. a# s3 q5 }- r; Z
rt random 360

4 m4 q% {1 H9 t3 b( `
2 c* S1 q. m. v4 i" Sfd 1
% E& s% ~; t5 A; D# Y

5 t0 S$ h6 J+ ^! ]3 `9 _0 Qifelse(other turtles-here != nobody)[
+ B  R5 M2 v0 C  J8 P
$ i, A% h' Z# B! F3 G2 V- }
set customer one-of other turtles-here

6 [7 P+ R# j% X5 U0 n2 y1 V) I  r, {$ d! D  e
;; set [customer] of customer myself

( g9 y) d6 p% p2 b' g! T/ r
- S& x: C9 y; @( T* c) qset [trade-record-one] of self item (([who] of customer) - 1)' V/ d/ M/ ]+ a: C8 ~
[trade-record-all]of self
: H0 ?" W% f5 ?1 a8 f6 _+ _;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

/ ]7 O, f* M9 p1 c1 C+ M: ?0 ^8 d* g7 M- W; q) P
set [trade-record-one] of customer item (([who] of self) - 1)9 }4 W' R4 k/ L$ G3 M: G
[trade-record-all]of customer

' b% {6 t% C5 e5 k3 b4 a9 y" d! d' ]* W0 P9 D) W9 i; [
set [trade-record-one-len] of self length [trade-record-one] of self
, u6 H* |% @# g2 ^2 y( a$ J( q
) o* J' L; O$ Y$ R. _
set trade-record-current( list (timer) (random money-upper-limit))
: g9 `* o- [" I  X6 N( k5 P+ R
+ Z8 ~) W+ K0 D8 m" c
ask self [do-trust]: d- e8 q( a, K2 E( q- q) F& e5 ?
;;
先求ij的信任度0 l# P' l  y+ U# @
& N$ I( f! P2 Q* X2 p4 D
if ([trust-ok] of self)
! r+ G2 j% w9 [4 v9 Z& L;;
根据ij的信任度来决定是否与j进行交易[2 \, ^( ?; s* Q7 o$ H6 C- s
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself0 D$ n2 _' s% {0 a

4 T) |, Y6 T6 v$ a0 Q  I: n9 J[
# m( n) q" m) B+ m' Q# Y

! \& b$ c0 Q) p8 t" d# g3 T" }do-trade

8 ?& y( o( V5 s# r; q# L& s; i% d- M7 Y* J% z  r) E' r; q
update-credibility-ijl
. s1 \, u" a; D- W- l0 D; S
9 M# @8 Z4 m3 H. b
update-credibility-list
' f* B, x) j1 q0 D) L0 y* N7 ]+ D

9 Z# B) x- {) L8 [* w/ r! X7 l' z6 B( Z
update-global-reputation-list
/ a* C% J* S/ \# r/ }- y, x% a

6 z4 o9 y8 p* k) f' }poll-class

+ w* t5 F3 Y+ Y: `! ?. c) m: v5 f- j: W5 b9 |" ?- F
get-color
" X, y% C2 z% z* @% X# z6 s8 ^

% ?) D: K3 G% j( a]]7 g/ Z/ J+ I# v
$ U7 B- ]4 w6 p
;;
如果所得的信任度满足条件,则进行交易5 g+ @1 [  o3 h$ c  a6 E

4 d% N+ v7 H) r3 z( S2 G3 P[
/ X) x: M& P* J  s( v' _8 F

* s3 }, ~  W; o- A5 r$ w- rrt random 360
# m* P4 b0 E3 z  f, X

# ?, v4 G/ o+ L8 n6 d" I& F# e: nfd 1
3 E1 N: P: A8 f- n3 |
0 E" v8 d, B7 h% X" Q
]

: h2 g/ z! G! }2 I. z. u7 _
3 n! O" g( W/ w6 jend

; L: \1 T8 n! p1 T& {& H4 }0 V6 `5 ]" z& I7 ?
to do-trust
! u1 s8 c4 D9 v, E% A7 E# a) @; {set trust-ok False) @# A, p6 E$ @
  L  L4 m/ r6 s( m
1 X8 z1 E. W) G" H7 f& Q) h
let max-trade-times 0
+ y$ {; E# W- n  H/ j6 w2 Pforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
6 N0 K. F; a+ z  r- G  Llet max-trade-money 0! b8 w- Z+ v, B% t/ `
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]7 t' T5 b% C" j5 @
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))& _9 f" F. o% U

% i  A2 p. M$ Y% _2 W  B: v
1 q' f) @; w8 E1 z. t& b
get-global-proportion) N1 n. U! v/ A7 x3 n
let trust-value
* h: g; f4 C3 ]) _local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

4 g" M; Q- X5 y7 z" N( Jif(trust-value > trade-trust-value)0 I0 @$ p; c' f- d
[set trust-ok true]
( O$ F( o. R/ ]# Fend2 h* `* d- D' i* O9 p

4 p8 F- O; u/ G- p& [to get-global-proportion  O% ^4 t1 Y5 G4 q& {
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
; z# c: W2 F' N5 J( |[set global-proportion 0]
, X( j; D8 E4 G[let i 0
9 j) r; L/ w3 tlet sum-money 0
1 n% N- |: H+ l8 i! s' V/ [$ xwhile[ i < people]& f3 o! g3 j2 e: A! I! d$ J2 `3 E
[% a$ A9 q" {. |0 {
if( length (item i9 I! j! C/ q. l% o$ U
[trade-record-all] of customer) > 3 )
, E3 a; e& B( O) o1 X+ n
[
5 I4 h6 C: r2 }* W& S9 \set sum-money (sum-money + item 2(item i [trade-record-all] of myself)); S+ D0 r5 u( X) H" G' v
]6 a" m" M) ~# f
]# B& G7 W, i( U7 o, M& E2 L' x
let j 0
/ E1 @/ J7 r2 i  C: Ulet note 0- I( h. }3 Y: [$ K6 M$ N: q- w
while[ j < people]; Q' F/ \; K" |( B
[7 [" T+ G: M6 h% Z  W! R
if( length (item i
# S7 a( I. t" K* _4 k7 L[trade-record-all] of customer) > 3 )
0 M. ]6 b' Q) Q$ d
[0 h" E4 H/ j. {8 e
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
6 g( o: u6 p8 ?3 \/ d[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]7 J8 j# [( Q- z$ I4 x- T8 O0 m$ o
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
+ F0 d# P  B& B0 i! x- `]
) b7 G* x8 H+ i6 \/ }]
& v. b* d6 [/ o- ]8 E$ W7 j. @set global-proportion note
% p  H  z1 i4 s]
0 p3 V6 I% f6 m* L1 o& T/ Kend
: U" v0 t0 ]4 y" i
6 D& m" w2 {; E% B( L& a" Bto do-trade
% c- W2 p. ]0 x- H% p;;
这个过程实际上是给双方作出评价的过程/ s# s$ ]- T6 ]! n
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价; [  ?& E$ v1 g, P% _3 O. `# }
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价9 u, H3 `% N9 x& Y# N
set trade-record-current lput(timer) trade-record-current
  b9 x$ q* s4 m9 }% I* D;;
评价时间; Q5 v. C  }4 r
ask myself [$ `; ]) `- c& [; c: a8 ^! K1 I
update-local-reputation0 ]+ }  T; ?4 ]3 h) M
set trade-record-current lput([local-reputation] of myself) trade-record-current. c; j7 `/ O- P( j
]  P! _( Z( u+ C2 E+ y( I" l6 r% n
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself! C/ t/ i" ]  @
;;
将此次交易的记录加入到trade-record-one: k# v  s- H5 ~7 [. r- C8 s2 B1 z
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
$ B: O# }8 i0 G. J$ {let note (item 2 trade-record-current )
$ W% L( w4 o$ v9 {% {set trade-record-current5 G0 D1 l" M% n& [  e8 H3 o9 p* m
(replace-item 2 trade-record-current (item 3 trade-record-current))
" V1 ?7 @4 R, r6 Q& O
set trade-record-current
" z" z  w4 {) E- H& {' j- j(replace-item 3 trade-record-current note)5 i+ `( F% H4 F4 D) v) h. H
  b; X5 m' U: f" S3 P& O: O9 A
* {( v4 I+ x2 V/ q
ask customer [' P/ B9 F; A* ]+ M0 d6 G6 p6 g
update-local-reputation
" I: L+ l) o: G; n7 h. |3 uset trade-record-current
' ?# [3 R) ?' }. {1 I(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

% S8 H4 Z$ k+ j. A! F' L8 ~/ N( H]/ d) U: |+ x5 G" l

6 j) H% B) P% k+ G

7 a9 u3 h' x. xset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
4 y# d) @! D& j* ~' G$ b0 N6 \2 H. ]
3 Z+ |* g  f- K8 f$ I0 N% d
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))5 ~/ n4 e+ S7 `
;;
将此次交易的记录加入到customertrade-record-all% [9 a4 l# z; g# X
end
1 ~" l. q1 U# j# e3 ~5 ]
7 X0 u: q% p. x) q/ M7 J) Z5 p- p9 i/ \( dto update-local-reputation1 U: M% _3 g+ |( u3 Z: t
set [trade-record-one-len] of myself length [trade-record-one] of myself* q! A; x0 N  @, C6 t$ D  N
+ V; Z! v* G0 j5 O, \9 y
$ l, b/ X# u8 v! {; S
;;if [trade-record-one-len] of myself > 3
, X/ a" n  `. E: F2 \/ n) I
update-neighbor-total( ?8 w1 m6 @% h$ x5 |9 i+ h+ D- G
;;
更新邻居节点的数目,在此进行- {8 Z6 n  E3 L; R  k' [( j
let i 3
4 ]- p" G/ T7 Flet sum-time 06 x+ B# B' X& t  n' W
while[i < [trade-record-one-len] of myself]
+ @5 R" ^0 g6 A' ~$ _[
; t; V. z- B' [4 D" iset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
# Z* k4 |0 ?: N5 ~1 O. X' Jset i* ^- Q  I) k) S7 s; b  _
( i + 1)

3 C& J) O& m8 J8 v1 R4 _]5 E& E# M! Q4 J
let j 3. B3 m1 e, [6 K( X4 t* k
let sum-money 0
2 G8 z- d9 |- mwhile[j < [trade-record-one-len] of myself]' e8 {- ?; m( v( e
[
# K) U3 e# H! W1 Zset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
- |; w/ L9 r5 K9 a9 @set j
6 j' }/ D' `9 @: ?/ Z9 l( j + 1)
7 C. u- d5 i+ @# w& ]( I
]1 b' p& Y) i+ ?3 o8 T
let k 38 W: J4 P+ T* Y1 e5 Q; R% E) x
let power 04 p" {3 ?6 |& {7 x5 m5 L0 T! Y% M
let local 0
6 f4 O4 C- Z  r2 I, |/ pwhile [k <[trade-record-one-len] of myself]) d# X! p( q, O& h2 v
[% E: P! i  L5 }
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) ; z' p+ v# o! G
set k (k + 1)3 U9 l/ R4 V2 ^+ f) L3 y. r+ _
]
9 Y, `, ^* H$ u7 J0 e; kset [local-reputation] of myself (local)
5 ?' `9 N+ o: S9 {' a2 @4 Fend
' L; Z& h, t/ [( X. O1 h$ E' b/ ^% p6 _) m8 n* P) P
to update-neighbor-total+ O0 ~4 o8 T* G; D0 s

2 }! G6 d& U: m$ G/ ]) G: C- tif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]0 r: M; b# @7 `% E1 W. C6 Q
- o6 ?0 E( d& }6 F

* X4 J! E9 C) q, c# qend
( k  u, L& L6 h" y. a
; [8 I( `8 m% ^2 w  [# [& ^to update-credibility-ijl
6 r# y- v4 s; Q3 s7 r5 l- }" d1 {
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。; U1 \7 _6 S8 o2 T# ^
let l 08 P, i( f  K+ S& B- o3 |" F) {
while[ l < people ]$ X* y$ B# F$ }" b( O$ D9 [  {
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
$ |2 O7 \! h1 U/ g% V  K! m[
5 L- ?+ q- y+ @let trade-record-one-j-l-len length item l ([trade-record-all] of customer)5 a' N0 E! t; ]
if (trade-record-one-j-l-len > 3)
! F  a2 u. o% a8 D9 |$ Q& h[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one! ~5 e& Y! }+ y$ |6 |' k, u
let i 34 {; G0 ?& B* q5 C# L) Q0 @
let sum-time 0
- H6 B: J2 a( f. {' L+ K& \- Mwhile[i < trade-record-one-len]9 K5 A5 R3 ]2 @# J1 Z: a
[
1 n- i* m7 H8 G0 F3 lset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )( @* e4 A- X8 U1 Q0 |
set i0 d$ p! j3 _& x9 U, G
( i + 1)
+ h1 I2 t8 j0 v3 U$ o; y. x
]
' \+ r3 B  C& ulet credibility-i-j-l 0
" x/ R# G4 P5 h;;i
评价(jjl的评价)4 p: w# G1 w9 z8 y$ H* Z
let j 30 X4 F2 v5 M2 Q4 O3 ]; P
let k 4
3 Y  K: i  A: U+ P7 ]while[j < trade-record-one-len]
& M9 e" U  I2 w9 B7 x[
' S4 S( @$ \8 o% T3 pwhile [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉0 G6 y* o3 L( X' v% F' h+ @* r
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)4 S+ @, B8 [) f' G. p3 v1 x
set j$ P: ^- f. A) r  A$ n; X
( j + 1)
* T# _2 {+ c4 |; w2 h6 q3 E  p
]
( U( q- b, t- j) V) Jset [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))) T( K3 n: d/ q  s' }
2 w! M. a5 h  b% L' {5 i& t/ n
: y. v7 `2 N7 K2 V7 w8 o  s1 a
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
( n, o/ S+ _: @* _3 q/ M+ n;;
及时更新il的评价质量的评价
4 q  r, `! H, p  X) a2 wset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]9 ^. o: e% J' I/ p( O- F$ a, L" Z
set l (l + 1)$ @+ c) U+ P7 U. G# Z& ?
]- V- @  C% a) i3 b! Q, ]2 Z: K
end4 [' ?; o0 f& z! X
7 z8 A" r! ?. B) G
to update-credibility-list
7 \1 z( I+ R1 F% |7 q* xlet i 0& I  O; e0 B# @6 m! j! T# s3 _
while[i < people]
# P* t; u6 n% ^$ {* f9 ?$ @[
8 |( I- X+ [4 [" qlet j 0
) l) O0 c8 {# T) I( }- ]/ Xlet note 0" b' g: w# h* f9 G: U8 e# @2 d: d; C
let k 09 k7 X6 p3 o" f1 e+ y6 [2 ~
;;
计作出过评价的邻居节点的数目
. J: W( z% g! i* q9 ^while[j < people]
2 l0 K8 g7 ~) w- `[
1 m  L( U% _: Hif (item j( [credibility] of turtle (i + 1)) != -1)
; m% e; @5 L% }; n0 n6 Z) t- S;;
判断是否给本turtle的评价质量做出过评价的节点6 s9 P9 C( \* f# m: o6 b- C4 W
[set note (note + item j ([credibility]of turtle (i + 1)))" `9 P% ^6 D, O! ]6 C2 x) o
;;*(exp (-(people - 2)))/(people - 2))]
4 v4 F2 V% {/ P2 v3 e: q
set k (k + 1)
" ?' W2 s  I0 C. Y/ v, j]
8 O7 [6 b4 c( Vset j (j + 1); M/ j. ~8 f( V
]
% e( p1 v4 K! E6 p6 z- Gset note (note *(exp (- (1 / k)))/ k)' L  e6 l. u$ \# u
set credibility-list (replace-item i credibility-list note)( [2 T# E# m) R0 R. ?% ]. a
set i (i + 1)( {+ y: J; ]0 W3 C6 w* R8 H
]
% p* ^8 n5 }# t7 Q% t3 h: r2 {. h( U7 Qend+ m( K9 H) I& n& e
1 K1 u3 s: d8 L; g8 K3 `/ z) p5 U
to update-global-reputation-list. Q) c0 k. v' E4 {
let j 0
* C! z/ }. x! H5 m7 F" U- `% \while[j < people]
$ E  k4 H& [5 O[4 N% }' |+ x/ R7 \2 J5 E
let new 08 K5 \. q" i+ ]) x# y- c2 E
;;
暂存新的一个全局声誉
6 P6 r3 g( Z/ a  G, Mlet i 0! z1 t" [8 Q9 L; |) X8 R5 j
let sum-money 0( N; s8 b9 X1 t  K2 Z& A+ m
let credibility-money 0" ~' G- E$ D! S, A
while [i < people]- l# B9 x* M; O) K+ P
[6 b8 _, |9 F* z( R# ?: D0 h
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))- r6 M* z9 i: Z
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
* ], F; Z  b. N: G) t8 F3 Lset i (i + 1)) p# F( g  |+ q$ C% c: U
]9 D  J& I  |# b' k6 d5 L
let k 0
6 u; U+ H1 S% K9 @" `0 D' Tlet new1 0
2 w! B+ D0 S; g. F2 {while [k < people]2 h7 N* Y: }$ x  o4 S# G
[
4 z& ~& d7 d7 N2 N$ y! I) _0 B0 {5 l/ `0 ]set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money), K6 D( ^. G0 \% b
set k (k + 1)
( \1 i3 ?2 w' d6 M9 A0 B( s]: |- T- V) _: T! B
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 3 D- W4 Z! s' o; S/ i# V
set global-reputation-list (replace-item j global-reputation-list new)
( d' K- x1 [! Uset j (j + 1)
; Q& k; Z' M0 }]* E6 }6 T" H3 r/ }, w+ c8 ?* P
end
: x( [+ c  Z, f9 t- C6 f6 E' F6 i) n* O3 i! s; p
  }9 X( j. w3 ]5 P
) o$ T" g- k/ Q% e9 R4 }1 }  O
to get-color
, m6 p( h1 r# w  ^
5 P3 B0 ?" I+ |5 V" x6 w% ~5 l4 Mset color blue

  B0 g: n% o8 W/ h" Q. i9 Eend* X. u6 f- K8 i3 U) J

6 V. y* T' R" Xto poll-class
5 k7 v$ m8 Q" w& h$ |4 p6 wend
& S0 f, a$ _' L: Q- W0 j5 z' c  N5 P$ |! ?1 E" D
to setup-plot1
+ ^+ E2 L  `$ r9 R2 _0 W$ k8 C0 R9 D* l. l
set-current-plot "Trends-of-Local-reputation"
' h( c$ d% n& {! Y# ]. f% M+ M
; o' K) N2 r. Q# I
set-plot-x-range 0 xmax
" V1 N6 m' C2 ~5 C9 r

$ T0 x4 e; ^0 n  o# s( N  y! @" @+ x2 l( tset-plot-y-range 0.0 ymax

9 M5 j* `' M9 U. \0 D! w- oend" c/ ^. ^: }( ^2 H5 l/ Z, l
4 c  F% u8 l9 z/ q
to setup-plot2
3 _6 B5 V  C+ B+ q- f, m  x
% T( U0 ]4 U: _5 D- _; r! ~set-current-plot "Trends-of-global-reputation"
- V0 k. F7 t) K6 F$ A
% K& G# }5 |& a0 I0 K8 ~; M6 n; S
set-plot-x-range 0 xmax

" K3 d9 k( C  f  |, H( L/ _$ D1 t* s* _8 p! v3 C
set-plot-y-range 0.0 ymax

- b( u9 b; ^- I  Rend
& g. h- x+ T6 S6 ]% s6 F/ b( g* l% X; j4 m; D9 a. ]( n
to setup-plot34 w& |4 [- |9 ~$ i/ B% B# H

7 @/ Z, O, I; A# X! Z; x' j: z. tset-current-plot "Trends-of-credibility"

* Z+ j2 ?! G# L& }( }' G; N' f# Z0 Y% Q0 z
set-plot-x-range 0 xmax

* c" ~& F6 m, r- T. v: X0 c& g
9 u; o+ N9 c2 `set-plot-y-range 0.0 ymax

0 K; q1 ?8 l/ p% d4 Vend
, P  n+ n5 P' J: s$ K6 Y: n* Y- F4 A: `6 \: o# v" W( ?
to do-plots2 [9 w, Q0 k- m
set-current-plot "Trends-of-Local-reputation"
- Y* d2 K4 o: H/ n/ }. q& L# E* Zset-current-plot-pen "Honest service"
3 k8 M2 c- V% F* d, Tend
3 d8 e1 z8 @$ g0 g2 Y
0 r! S6 u, }2 z3 T& f[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

本帖子中包含更多资源

您需要 登录 才可以下载或查看,没有帐号?注册

x
发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.- \7 G2 O2 {8 y
+ y8 O& E9 N) f) N- V* L
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
您需要登录后才可以回帖 登录 | 注册

本版积分规则

QQ|Archiver|手机版|SimulWay 道于仿真   

GMT+8, 2026-2-25 02:40 , Processed in 0.021559 second(s), 17 queries .

Powered by Discuz! X3.4 Licensed

© 2001-2017 Comsenz Inc.

快速回复 返回顶部 返回列表