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: 9486|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:+ @2 J- x# z8 f5 |8 C% \
to do-business " v# G9 H$ l1 Y* [/ N
rt random 360
% K6 u9 J5 y3 G/ b6 W, V fd 1; P; h* I1 n3 Z  v5 E
ifelse(other turtles-here != nobody)[4 ]4 T9 G* L, q% S; p' D$ y
   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.
/ @0 u2 C* R4 g( c+ j   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    # X# O! k! }1 h4 e4 V) v
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer3 Y5 W$ G, x8 C. Z
   set [trade-record-one-len] of self length [trade-record-one] of self( x( j! E8 _" m$ I; q, A) d5 c
   set trade-record-current( list (timer) (random money-upper-limit))9 h; t$ B+ T" C* p; Z

2 v% ^: Z: x# D0 n) j" N4 E问题的提示如下:
& X% ]1 B5 w7 N; ]/ y% ~
) \8 a/ }0 Z& d) f- w+ perror while turtle 50 running OF in procedure DO-BUSINESS$ k3 ^& q  I5 S4 A1 z7 ^
  called by procedure GO& ]* c$ U' k5 W, L9 e* c
OF expected input to be a turtle agentset or turtle but got NOBODY instead.6 h) P& c$ H$ R1 s( Q' u8 P* D
(halted running of go)" D5 w1 Y; D/ P! H' N! i

( Y. E4 z9 W  Q! C. W; I' A7 p, C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~~
+ e8 _, j2 }! G" D1 ?' }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( Q3 D) h9 }: @. O5 k
globals[
9 }8 F( d9 e  Y* R9 sxmax
1 D9 i2 X& }# T! Vymax
! n2 i! j2 b# i7 Pglobal-reputation-list
# P- r9 l. ?; c
- T1 S% v% H: C- {  e2 Q/ `;;
每一个turtle的全局声誉都存在此LIST
+ W/ K  v8 E; j- I6 @# ~credibility-list
0 D. m1 P: N/ u9 ^% e" M) W;;
每一个turtle的评价可信度9 G+ y* `1 M* i4 [% B
honest-service5 y4 l* ?5 r2 H+ T7 t5 |
unhonest-service
, h. T" S3 R2 B; I6 J3 Qoscillation6 p) }7 D; b4 g) c5 R% G# r% X
rand-dynamic6 ~3 ~4 ?7 ~  g  v" w' o2 i- l
]
* E, l1 w, R* v  R! D
3 ~0 _; ~" Y  y* T, P$ ]turtles-own[; @. [; F+ A- Z$ w3 F
trade-record-all
: O' r# W' k" A. j8 r+ {;;a list of lists,
trade-record-one组成
' @+ R9 o) k' N3 F/ t8 @9 _trade-record-one
2 l& A. [/ }/ Y: W; r* M;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录% u- L) B" f8 g% K% W# {2 c( }6 K
3 W; L3 s2 k& x! \. v0 @$ B* Y
;;[
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]]* k$ T& i" f4 j* i9 _, m5 p
trade-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]
& B% A6 d7 ~5 Z$ j6 i0 b0 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
. {6 M( j" i, A; kneighbor-total
! o$ m6 f$ V. c! @+ v+ m+ n;;
记录该turtle的邻居节点的数目
1 B+ }9 K1 o" a( l; ?trade-time
% L0 P7 F7 t) j! `  E;;
当前发生交易的turtle的交易时间) n8 D+ ~: F5 G6 p0 o% ]- ~( O
appraise-give8 a& Q1 c  @& A7 j$ N
;;
当前发生交易时给出的评价
2 V! z) o* @8 p& F) m: N; K0 yappraise-receive
  Y; y8 p4 h. R;;
当前发生交易时收到的评价; J( t) Q/ e; N+ t
appraise-time  e* A( c  S& L4 W7 E: h) |! q/ j, P" v
;;
当前发生交易时的评价时间+ |0 B' ?8 N/ U4 l  e1 g  `
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
9 o$ D) r( b: J2 C% G7 w" |trade-times-total7 a5 v. T3 ~0 F" `. F' g+ {
;;
与当前turtle的交易总次数
$ Y9 p9 l9 `: Ctrade-money-total
: i! F  d! k. @( \;;
与当前turtle的交易总金额
) O2 K3 ?. u% K3 {$ W2 ulocal-reputation
6 q3 n6 |5 V, Bglobal-reputation
6 N; [+ @  U' f( A6 Ecredibility8 _2 F. Y" s; D
;;
评价可信度,每次交易后都需要更新2 w4 q/ \# t+ R$ P
credibility-all
8 |  ?4 i% b0 `;;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
% C; F2 B: n4 P
+ Y, M7 B+ a! Z0 y, N;;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
8 b  f* }3 x7 J2 ?0 A; j' a7 acredibility-one
+ D# b4 \1 j  U# X: z) d* X, z! x9 R$ o;;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! Y3 O. G7 z# |8 g: T% U
global-proportion
3 k+ t. Y8 K. u; \customer
3 D& |- E/ J, Z4 vcustomer-no0 ?% a: L) [) ~/ J+ q
trust-ok
, E# Y1 p- U7 L  ?5 A# d1 w, }* ^trade-record-one-len;;trade-record-one的长度. f; y3 P5 O; h" ?3 o  `; W
]5 {7 a7 Q  l' F) i
0 ~2 N. D6 o2 w6 T0 b& h$ _
;;setup procedure
4 G3 i( u* u, c! r2 o5 ^; R5 F$ g% ^* M+ B" q) f
to setup
: q( H' \# Z' }  D+ z
- S* b) }9 V6 u' C- Z+ S! mca
  b9 h" F# Y4 D! k% Q

4 n- K+ X' ], Q( D- T5 _initialize-settings
% H. F( l9 `% V( G% M
8 {' V6 k- _+ r0 x' N- A) P
crt people [setup-turtles]
. {! u0 Y; E6 H# j' `/ E3 u* ]

1 {% X6 Z9 a3 o8 Nreset-timer

) K; E) _$ Y" n$ C
* l3 C, t7 R  Zpoll-class
( a$ ~6 L0 ~2 b7 N

: N% t8 l6 S3 T) A% I; G- ksetup-plots
" i" E* R! c/ R# f& a

! b# o0 h5 [% a7 I" h  Ido-plots

% o5 q9 r; i/ c+ c, Dend; k) f( O) R; w( X( }- ^4 X7 f) _

* x3 i* Y! U/ _( C5 o( T+ Gto initialize-settings
; u2 [3 q. z% ?" _+ U  H; N* ~) ^9 a. o* V$ c/ r5 U, Y
set global-reputation-list []

2 V$ A- J+ c; X% l# _; f1 R1 ?- \' _5 E! l
set credibility-list n-values people [0.5]

5 ~9 E. |& d+ {$ ]$ ]
$ I) x# m2 K$ k/ x7 lset honest-service 0

' p5 w& G4 A" M! b, [7 E% q; I* Q, S9 W
set unhonest-service 0

% O6 \7 P, N5 X4 ~* c; K8 J% P" h. j1 U* D+ ~/ o. o
set oscillation 0
) r1 \; w% c: ~: ~* W) P$ A

4 @3 t! G4 W/ D. U, Q, h' Eset rand-dynamic 0

5 ?! M9 V3 ^: X+ ?( T" H7 s2 send! l% p7 F- \6 y. [& r
  ~+ H% \& y6 h/ m7 u5 z
to setup-turtles 9 k2 j. T  `8 i% s
set shape "person"* G# h( w, d7 y% g+ s  P3 \
setxy random-xcor random-ycor
% l' Q( W3 L0 {set trade-record-one []
" p; g- ?2 g  e3 m5 @9 n
& E' Y. K9 ^! B+ U7 M
set trade-record-all n-values people [(list (? + 1) 0 0)]
! x! _5 o0 r6 ^6 D; b0 n$ Q! ~
& I6 r9 E* l/ e
set trade-record-current []
* p6 i% l7 O% I! jset credibility-receive []* ~% C) `+ X/ ^2 N
set local-reputation 0.5. Q# u/ t2 p" o. e
set neighbor-total 0
/ V; J4 L+ T# X4 k& V1 Vset trade-times-total 0! O: w/ C1 W: ]. }/ p3 [1 h( a' |
set trade-money-total 0
. P# }. Z1 \* l; A/ Hset customer nobody5 [* H# y5 n+ K" p* f: @
set credibility-all n-values people [creat-credibility]4 u5 E8 L; u2 ?  G' w
set credibility n-values people [-1]
7 ^4 n) u4 ?4 M! }: z& Sget-color) S& j% a7 G% C; B: X

/ c/ |4 ~7 u- X. yend  m) y7 x1 c/ n+ |5 A% c
8 @0 `) s5 U! g
to-report creat-credibility
' P% l# Z: v! [9 @7 Preport n-values people [0.5]" ^" x. Q; S3 l( [& H; B/ }
end
* _( C; h" o& @' F7 m' A0 F$ _4 W1 v, _4 P" S
to setup-plots
: \8 }+ S1 j' H( p. `7 I3 L
. X+ m! Q8 k$ s1 _' D1 T; x2 M! S/ Mset xmax 30

. p' ~0 I: O2 X, s9 k9 _+ A5 b" E
set ymax 1.0
8 l# q( @8 e) |8 A& f  _$ [& _

( x: {* j) ?* h2 h) I* h7 r. _clear-all-plots

: V9 c% I: B$ \) s0 V. g' |7 b; y  b% F% J; t% K
setup-plot1
! J1 n' ~/ f1 h* v' F% a4 h

# M# i/ j' ]. e* asetup-plot2

# v( k6 s/ G/ {- X, g# n) z! F7 A" g9 [! w+ P
setup-plot3
. @) `# \9 _1 Z9 U! l1 e
end
; |3 T+ ^7 `4 [7 z( v# e5 X, G  H& `9 ?; s" A
;;run time procedures! j5 |# v% V# b. Y- Q% I
! \" |0 t; T2 _5 O% j" {& v2 k& b' c
to go3 {5 w2 N* x& V6 s. R

3 h: f9 _1 v8 L" Z2 g) o7 w9 v9 N% d' Bask turtles [do-business]
* P% V$ @* e! p& q3 t
end
) n2 V$ A- \; \. `1 x/ v! {- A3 D+ \& F; p* c0 U4 k0 P
to do-business 0 }, |! Y; Y* T+ D3 M

, ]# k# D& X0 Q, t: o/ Z: h6 [( a, a, F5 P; h+ z
rt random 360
$ u0 S5 {. M# m/ n

; \  K! B  N, r! jfd 1
. ^+ ?: c/ g+ f" T7 m
& I' F0 x( x" C& B8 t: @
ifelse(other turtles-here != nobody)[
8 i( x! f, B1 A5 H+ R

% z1 Q7 `  a4 B. D" }1 tset customer one-of other turtles-here

' D* y0 j( O! N" n3 }
1 W* z: a! }6 o% b;; set [customer] of customer myself

+ H, @4 K+ i2 J8 [, A) H1 D! y, |; R. u$ V  o' ]
set [trade-record-one] of self item (([who] of customer) - 1)
' Z, {+ ?2 E( N4 s% }- V5 ?' O[trade-record-all]of self
; _% d7 I7 n4 |7 Q2 [;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
2 D% X2 [/ M0 x! {( J  W  o

  y1 T- |* a. H* w. iset [trade-record-one] of customer item (([who] of self) - 1)3 }4 {; `* W7 I+ A+ F
[trade-record-all]of customer

: J! `4 z% E5 m/ T& W9 H% ^% T0 R8 j6 b- d  K- G. P
set [trade-record-one-len] of self length [trade-record-one] of self

+ p8 o' X+ ^% K* x8 a+ h9 f( _9 l0 N$ p& [$ d
set trade-record-current( list (timer) (random money-upper-limit))
$ ?. {4 `. p) E" V, ?
: V9 ~2 f3 @" }. f
ask self [do-trust]1 Y& O- k! L1 o) n- m6 W3 ^0 c
;;
先求ij的信任度
7 J9 n7 h  D3 l9 Q
8 {* ~) `8 X( sif ([trust-ok] of self), ?2 f9 s( b0 X+ E7 C' `
;;
根据ij的信任度来决定是否与j进行交易[
0 A1 ^; x! f) d, b; b0 S' E* Gask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
3 f+ f. f4 \" v5 f
" ~( I3 N: }6 y8 r; D  i[
! J; T& H. U) ?
+ n! ]' A% X& J' h
do-trade
; B$ Q, a5 Z6 Y; u6 f* l9 R/ z

6 O7 n5 M$ P& R' @0 qupdate-credibility-ijl

7 T1 t  j! V2 z% n5 Q; M5 H" c% i0 c7 C  |! e2 L
update-credibility-list
, ~6 A6 S" D: R  v+ S1 X: S/ c2 {* k
* K& l7 }* V( |. g' G

- X! F7 V- _7 q" E; f$ dupdate-global-reputation-list
( K! T6 C5 ~8 o! e
& U: V5 p0 W, X2 o
poll-class
9 @8 t6 R6 h* W/ e

0 x+ L! S' r1 o! xget-color
$ w( t. D- I1 d1 Q4 H
2 K: @9 ?6 s' W
]]
: l/ o  Y' h! Q$ |) o! r: H6 p
6 g2 V; ^0 |6 R) ?+ [" d/ ?" }9 o;;
如果所得的信任度满足条件,则进行交易
! R+ B: r$ q7 m
- p7 F8 V! ?* P  k6 Y9 b# @/ o- \[

# U) Q' R: d2 @/ p9 D  y
! j7 W! B9 M1 S. [  o1 g0 G  I4 Grt random 360
/ X( o) c% X/ X  X' t

) j, g: @& ]* p* _fd 1

; n! W3 _. w. R8 w( ?' S3 ]" r9 S5 o0 m$ T
]
) a9 Z4 F2 ]! A
6 r$ l& f3 \; o- W
end
7 o4 u7 d- p4 `" `; ]0 ?6 c

6 G3 N! f$ d/ Q5 |. K* d: l' X9 ^to do-trust
( x4 b1 b( U& z  V/ G+ zset trust-ok False
( d, J" [( U* |7 O/ s: l( E" i
  N8 l; t" i# y$ i
! G$ s0 P! _; W
let max-trade-times 0
8 h/ C3 e& g* H* c. aforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]0 a$ \5 i7 G' ^  T5 j8 {2 ]$ |
let max-trade-money 0
9 G' {5 D# x* W. Fforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]' M" x2 Z1 K: r, t: G, T
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
. G2 H' x* U: c. u6 c5 E- U0 ?& P* F5 Z. d  d. F

9 u# M0 W% m6 P- J9 kget-global-proportion
7 f! L0 K+ \3 |; e; Y+ n3 Z: k  I0 s9 B/ Glet trust-value
4 m. ~# t# Q! J; G+ z7 g, b6 llocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

3 p9 d1 ]' v( @if(trust-value > trade-trust-value)# x3 I" R; n" K. A+ c3 R2 o- [
[set trust-ok true]! \' q' }  B+ }. B2 k
end
2 Z  i1 t$ X  s; B' C
6 W# E( N9 [2 [8 ]to get-global-proportion% `3 }7 _5 u7 M. E6 ^
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)+ A9 z  l' F  @
[set global-proportion 0]
- s: w6 K7 Z( C3 F8 ^[let i 0
& T7 z4 H1 w3 T9 u0 {) M$ i- \let sum-money 0
* O3 [3 ]" ]% [+ L4 Lwhile[ i < people]
+ Q4 L$ x+ q1 [5 e[
  h) b' H. |  Y. Xif( length (item i
8 V4 @6 t+ D) B- r% R[trade-record-all] of customer) > 3 )
) @, [$ G0 d+ y3 [' K" d4 c2 T
[! |  p+ X/ U6 r( c7 B
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
" L, V5 g( K( W" }/ P$ K]1 F8 {) X, N' l
]& B5 ~6 x4 o) G  [6 b' I
let j 0' R8 s# U" z8 c1 S- `/ D
let note 0& a7 |9 ^4 D/ }0 h( l: M
while[ j < people]" [; @" K) k" e4 A# A
[
* l$ p/ J8 b9 n. jif( length (item i
5 q8 M! H0 E3 }$ F. C8 f! c( U. Q9 t[trade-record-all] of customer) > 3 )
$ J  F& `- ~5 H& @( A* f
[( m9 v5 D# o+ c7 B% v# k
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)3 h: X# |( T. L1 h' Q
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]. r+ f  ^: g5 q  b* c4 ?  _
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]( A( I/ C' V( \5 l3 t, o
]" g# [4 k6 r* e' Q2 l: W! [5 ?
]
4 g- {1 P$ d$ E3 B6 {2 ^6 _* K  Sset global-proportion note
% D3 _  k. D% G* V% x( g$ \]% r, p7 {: P  `: I
end
1 N7 v% [; Q5 c* Q( Y. [# ^" f' ^
7 n% `+ q, ^9 j$ }7 Q0 Oto do-trade
: _7 c$ K6 W8 Z3 T; U4 E;;
这个过程实际上是给双方作出评价的过程6 U% c6 D% r9 B4 b3 e! K
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
7 A0 \% ~7 K  B" W% Y/ Vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
  x5 t! i" M" S* W) y# aset trade-record-current lput(timer) trade-record-current
0 s* K9 O& R) l;;
评价时间
: a. Z- Q8 z7 ]+ g  ^2 z2 X) S3 dask myself [0 Q! C. N2 N  B( m7 i
update-local-reputation% k* Q1 o8 T% \% \0 `/ {" ?
set trade-record-current lput([local-reputation] of myself) trade-record-current0 M. w: z; ?* E/ g, h1 [* c0 X
]
2 H7 ^1 V1 Y- Q& o3 G& [+ Gset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself$ D  J1 z5 Y1 M! o3 A1 A
;;
将此次交易的记录加入到trade-record-one& @" X3 _8 P2 ^. d+ ^: d
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
0 P, Q* d- Y7 j/ [$ H) flet note (item 2 trade-record-current )
  n' I- [' M5 z1 j- a; y# P* _9 eset trade-record-current
6 P! |% _/ p5 V; z  }3 W(replace-item 2 trade-record-current (item 3 trade-record-current))

* U3 I  g! l4 n5 L% `set trade-record-current7 W% _! v; a$ [* r, {5 B" Z
(replace-item 3 trade-record-current note)
4 A3 e! N, {7 J" K9 L8 Z6 H
0 z. {; q" x' x
# Q2 ^5 A2 {' m5 H
ask customer [/ P, b8 i. m* Y& |. F( Z$ p
update-local-reputation& {# h; C0 a4 C) f( `8 x( p, f
set trade-record-current
) u/ V: i/ |. |( X(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
  i8 u( |$ }, k+ R0 J# N2 _9 O; u
]0 _2 S: I$ L; ?; r
* G5 p5 i. Y; [2 W1 L0 S

% l, N0 U, \! @set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
. {8 g& N) W' w8 @. [! r6 g& ^) B, g* F
" ~( T. J4 K. C& T1 X( Y& I
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))9 l2 a: R! `# p- s
;;
将此次交易的记录加入到customertrade-record-all. W4 Z; v! Y1 ]4 v: K# p8 h3 c3 S4 j, h
end
2 q0 ?# N! g5 Z% i% l# c
; w& q" T+ L( y* M' Pto update-local-reputation
$ y/ p. K2 D9 oset [trade-record-one-len] of myself length [trade-record-one] of myself
, ~) M' x6 J0 H$ C* ^( t0 v
6 O9 y1 d8 {0 e3 q  F' P2 `1 T6 }# L; q/ X! q7 r- @% C
;;if [trade-record-one-len] of myself > 3

, E( z( |7 b! T! p% Lupdate-neighbor-total
, Q) G, j, s; f/ q" a, G;;
更新邻居节点的数目,在此进行) z$ h* e& S+ R9 m- B: ]
let i 36 H0 J. I- x/ Q" f* e4 Z
let sum-time 09 R7 t: Q1 O+ |' S. n. O+ _
while[i < [trade-record-one-len] of myself]
1 a6 W- Q: [* z+ d9 l[$ h4 X7 g3 I0 v) T4 J, ~
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )! s+ g: F3 _$ U) m3 `$ K& j2 H1 ?% L
set i1 c, W/ ]( {' B
( i + 1)
3 S1 g% N( `# o
]" ]* c2 r( W4 y3 o& }% X% s) G
let j 3* ^7 |* k% I* {; B
let sum-money 06 f7 j. a4 j  V. f! H
while[j < [trade-record-one-len] of myself]
- n' X" v4 q7 B; Z9 k' P[4 X, v% q! W) K9 u5 l
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
# |! I9 ~) I; `& v6 B. \8 pset j3 a, w( Q9 l& h0 J. ~8 E* v
( j + 1)

! w& H! S% q) @' Z( F. R4 j]) g1 R* p- \* H2 w5 R3 g
let k 3
8 ?" A5 z: o& w2 W6 `  G  flet power 0" R* j3 c! H9 S+ z' }- K
let local 0
4 n% S$ A$ T! ^7 m3 {while [k <[trade-record-one-len] of myself]8 w  S: F: @3 w" A* |0 t
[* S+ a8 G4 E0 Z* r$ @
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)
4 ~& M) S) J/ `6 \/ p: cset k (k + 1)0 q- L; F0 H9 K: f1 q* n# W
]" d7 ?. p: J! S
set [local-reputation] of myself (local)
0 [, s; W1 m# z9 E0 G7 }7 nend
. c9 ]4 P  P& Q: F( i4 A- ?. F( ~7 L& f( Z: d$ \! V. l# x2 ]% s7 s
to update-neighbor-total/ j! S/ p& S7 n" ?4 F0 V! L
4 K- q0 D0 S: A5 `+ u
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]6 G7 m! a& h0 ?1 ~

  D! s2 w( g' q$ o4 {
) z  i" D5 w& I/ n% r0 ?
end
9 _( y, s0 l, G8 V5 q; m3 E6 {! C1 [% ]# N- B" d
to update-credibility-ijl 2 P; t8 Z. Q! n' B" l% J

& l( H! F0 T2 i;;
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。, C' D+ d) [- g/ d) V" {2 Y
let l 01 I5 t6 |0 H! F
while[ l < people ]3 s0 o1 s8 `" n
;;
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3 Z0 O& \8 s' @- J: g
[) d0 e! Z3 \; r8 ~7 k; r& m' m
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)7 h2 d* u" a  [& u  o, k1 T
if (trade-record-one-j-l-len > 3)# p9 I$ Q8 n1 q1 q
[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-one5 j/ H* `6 d: |& n: w# K2 H7 U
let i 3
. E3 K% j! K4 I8 R5 ?let sum-time 0( i6 q! n+ _) Z  M% {
while[i < trade-record-one-len]; z" `* U) I# B: f4 i! L. `7 e6 n( _1 V
[# P* [2 H7 h3 t( a6 u+ }8 J: \! M
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ). h/ G8 i. Z) e$ J) ]
set i* k% ^8 v' I9 t3 t5 Y2 D! U9 N
( i + 1)
' B; S9 U* S$ `% V) o
]
; T% }) Y) d( ^1 Elet credibility-i-j-l 0! J  l1 O* ?) d! T) l
;;i
评价(jjl的评价)
/ Q$ B& @1 w' N0 w- rlet j 3. y7 Q0 {9 f5 s' [% ~8 Y' `
let k 4, l. b$ b! O$ x: d
while[j < trade-record-one-len]% f5 R$ A, A$ n
[, o6 M% w) y, j* [% f1 u) U
while [((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
& s4 d# }! S9 Z4 ?# ~. Fset 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)
9 f$ j+ }# U; d5 V7 J4 Rset j  y' h* d( [& w1 M1 T2 _( {$ Q5 s  z
( j + 1)

3 g9 t( Y, ~( o) `]
! b. G( `0 C" Qset [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 ))
. w! i+ I: c! [# i
" b7 |0 o3 c/ [- p+ Q" M

$ q- `2 Q7 v' F$ i6 B' k; D) G, tlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
4 B' G: n6 v" W- O3 W0 k;;
及时更新il的评价质量的评价- Z1 n3 {6 `' ?0 Y# m2 r% E
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]1 b: o. I  e( _6 E( I* m7 N6 B
set l (l + 1)' ^1 t7 t' N& _! I" ^5 s7 K" i9 e
]
% ^2 W$ v9 f& G# B4 }end
% e. u( D3 q. P! I, U4 D, G, F: a  E- _) n) U
to update-credibility-list
" `4 a1 y9 z4 l3 @let i 04 m& c/ q' T2 F
while[i < people]6 d6 V& ?5 O5 q2 N0 y
[
+ E( C* m5 j/ M) I$ plet j 0. D  [0 p: A$ d! h. R% P8 j# T$ P
let note 0$ j: F5 N* O9 G1 n; y  V
let k 0+ j; L0 X+ P' f9 j6 t" B
;;
计作出过评价的邻居节点的数目+ o( [3 k5 [8 k( C# Q5 @6 k$ l
while[j < people]% G; o0 G+ U! v" L9 N) \
[
& R- f& M! f0 Y5 f' H( o: T' Q' s( mif (item j( [credibility] of turtle (i + 1)) != -1)
5 A2 `) c( b; G;;
判断是否给本turtle的评价质量做出过评价的节点
* |. ~3 h# f( I* M' _( F+ A0 E[set note (note + item j ([credibility]of turtle (i + 1)))
* T1 M+ F' y  }7 Y' S;;*(exp (-(people - 2)))/(people - 2))]

0 ^, t( w) k/ B% s& x" x+ ]1 Yset k (k + 1)1 a6 S# E0 z0 A3 d; |& |
]
* i% ~5 K! J8 `, Q$ T- L/ zset j (j + 1); s% T( E. U. A4 k* t9 n
]
9 Y1 _& [5 S! o- ^1 z, kset note (note *(exp (- (1 / k)))/ k)& d/ z& a; c& ?
set credibility-list (replace-item i credibility-list note)
% k) N" m  E  Q: }  b+ X! Hset i (i + 1), S" m/ M6 Q* F) P3 u' L0 f
]8 V, T  l( j& M
end
3 d3 A* w% |/ n1 K+ Q& z2 o" }) j' v5 p
to update-global-reputation-list
8 ]1 q& |' r3 M! f+ L4 U& vlet j 0* D: U. |& {0 _. g2 R
while[j < people]4 n7 V8 V  Q  C/ }4 f- g
[
1 r5 l) J$ a: b  s; xlet new 06 W. h$ Y/ A" G0 c5 o% J, w8 \
;;
暂存新的一个全局声誉1 F; [5 F" e, O8 }
let i 08 R$ ?5 `( h7 s  w1 P' A; f
let sum-money 0
/ f3 I1 h8 J9 J" E  M& Ylet credibility-money 04 K5 x9 v" ^" Z0 H; F! M% }) R" n
while [i < people]! S7 o7 O  [1 _# K  M* h7 b5 y* B
[
: J" @  ~5 R* H* u3 @/ Fset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))( j  l1 `- X2 I9 ^" i
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))& W- o6 r0 `! d# p! h1 r5 d
set i (i + 1)/ U1 I, `9 P  w# |: |0 A: p' c
], g1 c0 D; _9 O
let k 0' z; \- G7 f/ j. S
let new1 0
! D0 ^. y) p! A3 P; h$ i9 Owhile [k < people]
9 V7 h; l! B/ m5 i$ B. r9 C1 D* @8 l" U[4 b2 `1 f  b! ^& K. i" A
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)
) q* o" l0 @8 Y8 f2 M1 V1 uset k (k + 1)* d. g- L4 _+ V8 i' L7 k% ~$ p
]
$ D+ A, b( ^. d% D, |& Dset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
6 q2 G$ P# q- ]$ p- j. V4 L5 Y, Sset global-reputation-list (replace-item j global-reputation-list new)3 Q; ^3 q) i# w& B8 F0 K, w7 m2 Q
set j (j + 1)- h& D5 X5 r' ?% ?+ N
]0 B, [+ Y$ R  v# a1 w1 ]
end" F3 C9 Z6 y4 F7 |  b
2 G0 S8 Y+ _( L% Q  Q

$ E/ a+ O) B- a( W# d- b
* }% N0 j; d# w/ k& v: [# {to get-color% ]0 M" \( P/ V: h0 y( D

9 o6 A* j8 g5 Iset color blue

5 t4 l4 h7 p3 @/ U! r: r' qend
- P  f+ {& d1 n# R& `  _* w* y/ g; A5 R6 p% w3 Z) b2 r  `8 C
to poll-class- u* b/ I3 a; z1 J
end
3 X& Y7 X; X6 J" i3 E8 I6 E/ f- ^- Q4 S- ]) R
to setup-plot12 c# n% Z# K: t2 s1 G' ^, U# E

- n: g  _0 b- h9 p2 Zset-current-plot "Trends-of-Local-reputation"
7 a% L2 i7 P+ e

9 A4 @4 @% |5 J. Vset-plot-x-range 0 xmax

. _; m6 o0 P8 }) n9 g$ [
3 B# S$ ~! q: Z/ @& q7 n/ _% yset-plot-y-range 0.0 ymax

- y) z: k6 r; H0 l& mend
5 e% \# h* Z) F3 h
/ f8 _$ x- r1 T' i/ r' c- Ato setup-plot2
/ ~$ d: Z6 }; r9 @$ w1 w. g4 e/ v0 Z+ p! B4 r+ n
set-current-plot "Trends-of-global-reputation"
9 o+ d" D. y7 B$ o& m5 h
8 T; U- U& I5 @) J# e: ~
set-plot-x-range 0 xmax
6 T6 b8 Z( L: O% X8 v2 A; m0 W* t
; E! M4 `' [: ^. X( u2 w
set-plot-y-range 0.0 ymax

2 i4 J3 n* O  p  {0 lend
2 M( }2 k3 ^) |  h
$ Y: C7 M+ f2 Y2 [/ ?5 ?to setup-plot3
3 k- _: X0 e3 @% N1 L" b- P9 F: k3 d$ {
set-current-plot "Trends-of-credibility"
2 `# g4 U, k5 f0 w8 G; _% F
2 [1 c# z$ _/ g% R2 `6 h
set-plot-x-range 0 xmax

3 G+ W5 U0 E* @: u
) s: r4 ^7 v7 R/ F8 yset-plot-y-range 0.0 ymax
, U! l  H7 F8 T
end
& O! D# w7 a* w: M: |  e: _! D; o( A4 c- Z  e& M
to do-plots6 a5 [, {/ C; p* k: L
set-current-plot "Trends-of-Local-reputation"
+ {+ S! u! U, [. v0 Gset-current-plot-pen "Honest service"' j8 `9 J+ b9 G1 \# _: H6 Z
end
! L$ L4 u+ d7 n# o. N: E8 |: |. P) U3 Z6 @& _5 R5 L$ ^
[ 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.$ n9 ~& K* Y% I/ Q8 r" U9 |
: r. s0 F* L; ~! `; H# o" J7 L4 g* e
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, 2025-7-19 07:23 , Processed in 0.016730 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