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[交流] 关于turtle的使用问题

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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:& y! a" l; C( D
to do-business
$ |7 m4 }; d+ v rt random 360# |% o/ q4 P& E
fd 1
8 z3 N4 F8 B8 B- d0 Z ifelse(other turtles-here != nobody)[3 p" q- C* m7 d5 w$ z
   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.
# X: R" ^' p. g# J6 y" I' K   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
& K0 b: M; ]2 R& w* k/ P' r   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer) u, J. l* v6 x
   set [trade-record-one-len] of self length [trade-record-one] of self
0 ], K7 P0 `6 P0 L   set trade-record-current( list (timer) (random money-upper-limit))! J2 z& n& v' k* @; J
: y- ~5 {- W+ A8 P& z
问题的提示如下:
/ ]- U! [( \, T4 `  J- c. p+ d
2 B5 z4 d. f! d: |error while turtle 50 running OF in procedure DO-BUSINESS$ n; W8 z: n3 ^; ], I. n
  called by procedure GO4 k- F- E/ N  s% _+ ^
OF expected input to be a turtle agentset or turtle but got NOBODY instead.4 W5 r( J6 a, m8 N; g8 `8 N3 y
(halted running of go)
- M  `" F( \: c' g9 T3 r5 \+ G$ v+ e5 t# |; S- G( y& K
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~~3 Y" P3 w, N# N3 a" w% j: f
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.

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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
/ a) O8 k, X; i- c, Gglobals[* d5 l: n: \! ]6 O. h& t# B
xmax
) w& y3 O5 C8 S3 r5 `# yymax+ b* b( D8 q2 A, t, n
global-reputation-list6 B7 W+ A: O# q% k+ h0 h0 A% e

0 i' r# w: n3 Y; X  w7 S;;
每一个turtle的全局声誉都存在此LIST# ^. N$ P  v' `0 n7 o$ e
credibility-list$ C: P% {2 a& i, ?# s  G: v
;;
每一个turtle的评价可信度
, M. k! Q/ a* H1 V( ^honest-service
4 d' y9 ~: \4 e) Sunhonest-service
+ `, c9 t" E6 _. E8 h. l& U8 }/ _oscillation( _4 E' V0 [$ E2 c' p* u
rand-dynamic3 k! l7 m7 a/ b$ A) U) v* f
]
0 H' }- b% L; ?( P4 a5 X3 V) }; M' T0 m0 y, [$ C9 k
turtles-own[+ K1 N5 d7 {9 c! k1 U
trade-record-all
; `$ s; A7 }% v# d6 C1 u;;a list of lists,
trade-record-one组成8 Y* M4 x/ P# S& A- i
trade-record-one) H2 r" w2 U, n5 _  n4 R
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录; t* `! R  C  m' M
+ v' j/ v6 k& W( B5 ]- p
;;[
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]]
0 t; K- @5 v. T  k0 H0 C" Btrade-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]
" G6 M! v5 P$ q+ \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list7 k4 A/ G1 _# v# J
neighbor-total3 P5 V7 H. B) `
;;
记录该turtle的邻居节点的数目1 W: O6 N+ `5 Q+ R; r2 t  I6 q
trade-time
, F2 D+ e1 i4 O% f;;
当前发生交易的turtle的交易时间
7 Q8 b* `3 v! i5 A4 Tappraise-give
9 p1 B+ u3 K5 [4 y& e* ^4 H;;
当前发生交易时给出的评价
0 y- q1 ?! |1 Y/ bappraise-receive6 c$ }/ }/ f' h/ o; n0 O' ^
;;
当前发生交易时收到的评价
* Q8 d: D& a- q( `8 Nappraise-time
( \7 J, e8 H1 t( P;;
当前发生交易时的评价时间. x' @5 t# L$ a& [; r: r
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
2 A/ o& J- d7 j9 ^2 ?9 ptrade-times-total
& m  }: h. ?& G/ K;;
与当前turtle的交易总次数
4 T- J5 {' o) Y, }: e( {trade-money-total
. i1 z( p0 y& o) T3 T& ^. @;;
与当前turtle的交易总金额; V, \$ Y$ Y2 A1 K  I
local-reputation
" C/ H+ i$ k8 V8 v6 fglobal-reputation% M$ {) E9 i4 ~3 P0 j* i7 f
credibility, L' O  f, n8 Z4 z, o7 w  ?- }1 M
;;
评价可信度,每次交易后都需要更新! ?7 J2 r/ N: A9 i: _5 \" S0 R
credibility-all0 R. q! p# a8 ^" u
;;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" b! l+ B7 V  J6 n; I% ]
2 u/ n# C' j- D* B9 z
;;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
4 ]' O0 d1 u& f) b2 Acredibility-one
4 V. C, Z  @6 U& d  I;;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& w1 p, z- d7 q5 M- }
global-proportion. k3 \8 U, M6 }
customer+ ]* Z& s: e* ~: z3 ]/ d
customer-no% a* e6 G, T  t, A- Y% A0 w) q& }! F
trust-ok
. f- E. q. e0 gtrade-record-one-len;;trade-record-one的长度
* e! W/ h0 K; p7 ~$ \7 |, u]5 h# ?7 |  ?9 c( g. {

: ]9 m/ l! q& q6 Z9 @( Q0 };;setup procedure8 J7 L% t* f, m

8 M' V9 H. |' Q4 g  Tto setup
, s, W2 O: F  D6 \$ K  B! j( E5 `9 Y. J% s( u' x; N
ca
. J% E# Z% n" P+ A7 N5 w- o. w# G
8 e) D" Q# M  P; q" C
initialize-settings

3 `- j$ w# a5 }# M, e9 D
6 |, i" r2 ~4 h& N. j8 hcrt people [setup-turtles]
4 y$ f+ c1 T" V5 X

' e& z: @7 X) Freset-timer
/ P  c9 P( X* g  m4 ^" h
% c, m6 [& w" y; u0 l* I4 A
poll-class

  |: R0 S. o5 {4 X0 H, K6 D5 L: ^
setup-plots
* @; x+ u$ J6 |: W3 i* k- J' B

4 Z- Y/ @$ p8 \& A1 sdo-plots

% e2 t) z! V0 H. Z5 N0 O6 F$ v: }end
0 u" f% K% x3 z5 z# b
5 q1 E- {0 L$ x. yto initialize-settings( @; w( e# F& l/ u9 ?
2 ?6 o9 K; U, u. w& m3 x. x
set global-reputation-list []
/ y7 @( }# p  D# B

% |1 u, l; k+ t2 v- Y# Mset credibility-list n-values people [0.5]
: ?$ }7 f9 Z9 P3 M3 p/ g
/ N7 K! T+ ]. v& x7 ^3 _1 _% A
set honest-service 0

9 n& D* O* D$ {* }0 J3 g4 R
7 }: r/ P5 R0 P5 Bset unhonest-service 0

8 f+ D: s& {% S6 _' Y# `. R) ?9 b- ^% J: x; B( A$ Z
set oscillation 0

0 O$ e" N+ A- Z: }$ r5 T+ J9 r! ]5 k3 Z0 g
set rand-dynamic 0
* V6 i( G1 M0 R+ D" f
end" \- y; x! I  g. r$ k4 M! x

% B& U1 G$ }# O( u2 g/ i* g9 nto setup-turtles 3 H$ C9 I; b! e3 d6 g' j) W6 Y
set shape "person"1 G% c: ?7 z& W9 k4 _
setxy random-xcor random-ycor
5 d; Y4 J* `. X  U( @set trade-record-one []- [2 T8 j, t% b

; S3 O) X5 C( K) u( Vset trade-record-all n-values people [(list (? + 1) 0 0)] 6 K# C" b+ {# d! X( k

5 s& z$ y& p. `0 }  B8 H8 zset trade-record-current []
+ e5 S" N3 \; M; Eset credibility-receive []
; |" N0 ?% `+ Vset local-reputation 0.5
0 x& |4 q0 Z: I3 \3 @8 W9 Eset neighbor-total 0$ t9 W6 A' R+ O  p% H
set trade-times-total 0! p/ r- e8 j' D5 c( d$ g
set trade-money-total 0
( P. ~, L5 u/ t7 fset customer nobody
6 v; u0 J1 X7 z) ?4 ~6 yset credibility-all n-values people [creat-credibility]
1 \6 Q' m* T9 r. }6 kset credibility n-values people [-1]( k4 [' {+ j9 Y$ ^4 V
get-color
3 V, `# \" L3 G$ ]
/ E4 X/ y  Y& E6 H
end; `/ J' ]& E4 n# }9 D

9 o. h# T9 g1 p, c6 ^0 T  ^to-report creat-credibility- }) h2 m' M6 G" K; }
report n-values people [0.5], ^" r; t5 H& y9 o
end3 r  x' J% }* L7 D  W2 |% V0 G: D

" }7 \" K0 g/ _% V. U+ @* |+ Mto setup-plots- b% \! [1 g( _7 J

  U7 w, _: H: N9 P: G9 C, Tset xmax 30

9 r1 O$ i1 r) t7 Q4 Y* G2 {3 C& _0 c5 \, p! K* ]1 ?- g) w
set ymax 1.0

% I; l* E1 c; P
! z" Z0 X# q. Iclear-all-plots

- |# f8 Z1 X3 Z  u) J. V  j, [/ p) [
9 m4 L5 v2 Z* l* s/ U; [setup-plot1

* B) {- \% e6 W( p9 E+ R( E  ^( ^
setup-plot2
* A& R+ m* o% B! [; `9 O
4 i$ y% r2 Y3 Z% q0 T$ O9 e2 A. C3 @1 Q
setup-plot3
4 y" c9 F( @* K* G1 h
end  X1 p$ ]; }! \/ m" |6 o2 W

6 U& g" K4 \8 l  a;;run time procedures
: ~" q* {; C+ M3 P9 N
' E# y! i: u& I4 U) J- E) Gto go
2 I' Z! b3 W2 n  }+ a: R; U' F# g6 u- ]" {4 u, v5 D" q" h
ask turtles [do-business]

% \) j, n* c: {: T, Q  g+ eend  j/ }( E* C. ^# E

( @$ b# F' a& ^- ]' t4 i( j  G  Hto do-business
/ u6 i& Q0 `* r, ?# O; t; Q
) R: z9 R- q2 C( c

: e: }5 `% o7 h4 O1 i- z3 Crt random 360
6 N6 r. p( H# f, M; T# S( \4 i
. r) T8 {  Q0 z9 [4 t# F
fd 1
+ P# J) V5 p* F3 E
& E2 e, g+ {' ~6 _, I
ifelse(other turtles-here != nobody)[

2 F( c! _  a$ J3 ~: ~5 h  S, E6 I! m3 a, X) v
set customer one-of other turtles-here

0 W; y( R* U3 m2 B
+ c$ U9 f( a' J7 ~, S5 O, F;; set [customer] of customer myself

' o" ^0 ]" \: ^  A+ [
; r, f! P( [: Oset [trade-record-one] of self item (([who] of customer) - 1)) S( b! [& a# ]9 v- c; n+ w  D
[trade-record-all]of self
0 R' e9 O* \8 h) d6 S4 d+ `6 b$ h' t;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
9 o+ Q+ z3 H% A, P/ Y) c) l9 n
, E! Y7 J" `& ~( l
set [trade-record-one] of customer item (([who] of self) - 1)! x* m  O; X: \& y: ^
[trade-record-all]of customer

& o( p, Z: j3 \6 \9 q5 z* e
  q& s; L' M/ e0 X7 D$ Wset [trade-record-one-len] of self length [trade-record-one] of self
9 G$ R# C1 W- V( ?! A

) t+ \% @. k4 @set trade-record-current( list (timer) (random money-upper-limit))

9 F: f1 C& u& }( U9 Y8 F% n$ f7 P5 m' P8 Q, k& E, E
ask self [do-trust]
7 E; _# |# X) o! h3 x;;
先求ij的信任度
+ D4 o: S6 A+ u  I7 a4 ?8 k
8 S& V/ `" F  ?% |if ([trust-ok] of self)
7 H" }% Q) z4 ~7 x2 q" P3 ~;;
根据ij的信任度来决定是否与j进行交易[# S( {4 f% h$ q5 j
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
6 g/ [" A; p1 _! Z, ]2 D( w5 r. y* e
" j2 z8 N& }7 n2 i& k3 @[

% Z' ]0 B' E1 C% S
& J. Y5 Y0 m+ ^: [do-trade

% N& w# v- K+ i" _8 X' Z
) \! q! k; Y# Q* N. J% g8 xupdate-credibility-ijl

5 f+ x5 h3 e% L- F! H: h, f; O/ t3 a( g3 o
update-credibility-list  s1 s5 D. J; z, Q( a

5 A* [, G* V9 f* C$ t" \+ m* }- F* {' f# }+ X
update-global-reputation-list
6 `. r! Y% d) o2 W& J4 y

9 J/ }& Q- n* i; K: F2 Mpoll-class
0 Q0 V0 T5 B2 j3 i* V# _7 b
4 [$ E  U& o7 x5 D5 ^" J
get-color
0 Z* X! ]* z# d6 G" E# Z; w4 |
1 A7 N9 w. v" N0 |5 A& W2 l
]], [$ X# p5 R5 J( g" `
5 u/ X) I) s' E* v% O2 a) g
;;
如果所得的信任度满足条件,则进行交易, y8 a' F8 O5 Y
3 r5 Y( \: I8 U  v
[

. C% f+ S  O: |: M- I. ~1 _2 S7 E* F7 d$ Z+ T
rt random 360
) G1 C- U; Z. i' z9 T$ n; m
+ u$ [. w& }+ W4 o) b9 w. k
fd 1
1 t6 I! p( d( z# C$ N
, o2 D( q7 N, {# {$ f
]

8 r! F7 D/ J: T' `: ~* y+ V' R* [
; x5 @* a6 ~/ a7 x" Jend

, j2 M- m5 l- Y+ M* {% |. V; h1 f* J, c
, `9 x  w0 ~5 s) S: Zto do-trust   |- m2 U9 s( Z) w
set trust-ok False
/ M, W2 h! V& ?9 b! u9 o: F3 s* l
0 m$ ~0 |  A7 Q& F
  f$ x$ s# z6 M. f* P; {
let max-trade-times 0
% j1 o. X& W3 }& E4 eforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]6 b# H- B5 q2 o6 v3 E
let max-trade-money 0
: C" ~* h/ v8 X: H$ o) R8 I/ hforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]" G6 l% ?& R$ l, i% g) h
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))5 |  I7 d( X* \, a' G
+ Q2 z" s+ c# q
  @+ Y# {1 L# P; W  l+ W# F2 k( y
get-global-proportion2 ]' X; }) C. `0 }7 }' Q
let trust-value
- H% T0 [7 d6 b, ^; A8 wlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
' P. l+ R+ _$ t: A4 O, |3 p5 g
if(trust-value > trade-trust-value)3 x+ ~4 `4 C$ j  B) `
[set trust-ok true]
( M4 {; K. j7 v: s' _( D; cend
* ]7 d% I4 L0 D8 O7 Q2 q4 c8 z0 x6 p* h/ [; }
to get-global-proportion
* m9 [! @2 L( _3 |: K- K8 M# [ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)2 k1 q  l) c4 @6 e2 i
[set global-proportion 0]
) c; H; x! w  J2 [8 j/ _& y) E" Y[let i 0
0 ~* d. N7 t" b) u! Elet sum-money 0+ v( {: l, k0 q  s
while[ i < people]0 L4 e1 O& n% j! x8 ?" O
[
' b0 f: y" f" U+ E+ Wif( length (item i! l) S# t. p1 z  Z# X, T- N
[trade-record-all] of customer) > 3 )
+ {7 ^4 n! S  F6 S4 K! W+ |: C
[6 P- i( F: h" L" ?9 ?" y$ r/ N( y# [
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
7 ^+ O8 P6 Y. G( c6 X]8 x  I1 X/ Q! o
]
7 n- I  U; `  Hlet j 08 S) d' v9 V1 T, w
let note 0
$ N/ u3 p6 B! k. s5 nwhile[ j < people], j* `3 ^3 p9 o/ X4 V; Z
[) W, x! N2 a) v' w6 b
if( length (item i
& V2 m; R% ~# @5 N, t[trade-record-all] of customer) > 3 )
: z- n* J' x1 ]% e9 b$ H
[9 O" A( R# N4 Y) F
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)! n8 Q4 }* G! H% ^& \( q# w! C
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
) P9 f! O* E3 G1 }; W) i[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
. _, ^, y0 q6 D7 H]9 V9 q; i3 d, {# A
]( d: E3 X3 |" ?; t
set global-proportion note4 v3 B% X# Q. e3 B; }
]- u+ i! r+ d6 O  D9 f4 P7 t, G# W
end
+ k$ \7 K2 r, h  G7 h# t$ x  N% Z! D8 Z, r
9 R/ R$ H0 ?! J+ o+ ~to do-trade$ X0 e8 _* x, v* c1 Y3 m4 y  ?
;;
这个过程实际上是给双方作出评价的过程% ^6 F# x) l) K3 x! d" y4 w
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价! B$ p' e+ }. z* k2 X% _% C
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价: @$ S0 }& t5 d+ \3 o
set trade-record-current lput(timer) trade-record-current9 P3 i) K7 j9 E- D, o& Q
;;
评价时间
3 z' f0 v( u& A# O- yask myself [
# a' P- z4 s: J4 i; s9 hupdate-local-reputation
! _* J( M6 w# V. y+ I) }set trade-record-current lput([local-reputation] of myself) trade-record-current
$ f, j  w8 u) B! ]' _]4 {$ e$ d3 I! [% K: j
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself6 ?& K8 b' e* G; {
;;
将此次交易的记录加入到trade-record-one
! c3 C( R. c- L3 W/ {set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
' [' E6 K/ _4 }let note (item 2 trade-record-current )% `# V5 S/ U" D. Y# \1 f
set trade-record-current
5 U% O* ]- e: Q# ~* B1 X(replace-item 2 trade-record-current (item 3 trade-record-current))
# T; m6 i: N$ U1 F0 V! d) S
set trade-record-current
8 c) i' W, p: x(replace-item 3 trade-record-current note)
4 o& U! x, W4 c( ]( ^5 D( b+ G7 f4 F

6 T5 [3 D$ N9 [/ d( S2 a2 xask customer [  C7 V- o8 j) i9 v' S8 X+ V
update-local-reputation2 y2 L. I6 D4 H8 O3 ~  E
set trade-record-current+ k% V4 ]$ v5 n  w& \, H; c3 u9 `
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

, }  Q& r, T* Z]
8 [; i% a! ^2 v% s( I4 `0 ~0 R  W
; m1 |& H7 t  \1 k/ g
3 a& G9 k' S% L1 Q5 b& A2 v
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- q. }5 K7 D+ P' N

/ b! I1 p- ^$ Y& mset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))' |- ~  e& R$ Z7 b6 u9 F
;;
将此次交易的记录加入到customertrade-record-all) z( c9 K) O0 h, A: e
end
. k, \( k9 L/ G# s: M  B, ~/ @3 S! d4 r& [+ @
to update-local-reputation3 w! _  Q  |! _6 e8 `' M
set [trade-record-one-len] of myself length [trade-record-one] of myself
7 O; f. y6 X0 K5 Q6 }
) E8 f4 \+ ?5 o. [  k: _; j) Y( T$ Y* F5 w: a( T
;;if [trade-record-one-len] of myself > 3

( ^* Y6 u! M; x" l9 Zupdate-neighbor-total. _' U5 R) X: q. r' ^' s
;;
更新邻居节点的数目,在此进行
  J# k5 R* L( Jlet i 32 e, h. q9 C$ f' z& S* b1 K; t
let sum-time 0
. B/ _+ X4 Q. k* |. B7 uwhile[i < [trade-record-one-len] of myself]9 A) K$ j' z% _
[
- N1 M9 ~; A2 \& cset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )) d- P5 _3 v! |1 G
set i
( `* n: R; w" @  p: {( I( i + 1)

9 l2 p) s% m5 }- u  [- D]+ N: w# Z2 Q: k- `
let j 3
) o$ \; Z7 s/ E' X4 klet sum-money 0
3 a/ {/ q) ?7 e  g$ j: b! B3 w& ~while[j < [trade-record-one-len] of myself]9 c6 R: f2 \7 I" w& z
[
$ n5 u  f7 V7 k  aset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)4 j/ A+ _; ~2 F: l5 s
set j3 l1 {+ r- P1 ^  l. _3 w
( j + 1)

; J' N$ r- n- y: c]
9 U( Z, ?1 P+ D) a3 w/ g. Slet k 3+ |# l. {! H8 L2 F) P
let power 00 G3 g4 s3 L6 v$ ?" k, I
let local 0
, f8 g6 g" k9 I" h6 s' Ywhile [k <[trade-record-one-len] of myself]
- W9 f9 P' t! R& G4 b3 O[
& w  H& `' R2 ?% `' m7 g4 u$ Kset 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)
8 g: @( Z9 O3 C# A( S6 pset k (k + 1)
7 L9 j2 ?4 [# @]& e: R9 J) y/ \
set [local-reputation] of myself (local)
- ?$ O+ z# W! h' kend
2 [. C, F5 S, s- h6 I7 x
' H2 }) H7 V9 l0 _- Uto update-neighbor-total4 J- T1 R/ T* b6 K

9 R: T! H- Q" |  I$ Iif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
. [9 t( m) ?, y9 H/ u8 s' O# I
. K+ Y% ?( q& M

) i2 j& F0 x& a( a# Cend; }  J; j+ a, {# y. M" v, w! F
  L% e0 T3 G. U! j4 Y+ e
to update-credibility-ijl
( _- U0 T5 `) q, F. o5 A
: `5 k7 i5 N# X/ T; D7 |5 V;;
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。6 \; p. `* g% Z8 U, v
let l 0
  \& [3 q+ S1 b$ C, Kwhile[ l < people ]
; ]2 {/ M6 w2 y;;
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$ e$ |7 K1 K4 {
[
# l9 H: a+ C' `& S" j+ Vlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)& c' z! `6 W+ c% N, K  g0 Z
if (trade-record-one-j-l-len > 3)
/ e9 ~* B! V0 h4 D4 Y9 T3 `[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  f! _1 g9 N% O1 E  q2 N  ~
let i 3. e9 \* b" {  c; [( M* o: I
let sum-time 0
% _5 M+ e7 G$ S4 H0 x6 ^& @9 L' [. Kwhile[i < trade-record-one-len]+ x# H* f3 N. g7 r, z- x8 I3 M
[2 J+ W0 @6 o  R  l7 V+ ~% n
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
- r, I& _3 _) L6 W- x# D4 ^$ Sset i  P/ N6 L1 `# l8 y& P# z
( i + 1)
% p) d$ r7 c8 Y" F$ B
]5 K8 H1 _& R9 E0 t3 j
let credibility-i-j-l 00 B1 J5 }& s$ _" }; V
;;i
评价(jjl的评价)
9 ?' P1 x3 {4 \7 y! ^2 q0 olet j 3& K% I- s7 X2 t7 P
let k 44 j7 j. h1 t0 f
while[j < trade-record-one-len]. _7 |3 H5 w' I8 {9 V) G5 [  N. Z
[7 G% G. D4 X' Z! g- l1 P+ Y  i6 H
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1 A% R- E5 D( T+ U2 B; ]
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)- C3 F. ~7 U+ `. b6 N
set j
3 o. d4 I8 @% n" u* h+ U; K1 Y( j + 1)

2 C0 C7 v/ I8 f], H1 J' E: u0 m
set [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 ))
4 g- R# J6 ]& w; V* P* ]6 f2 w* r) z$ E7 c/ W8 E5 [

% U- r$ Y5 u$ ~  Slet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))' g& p; n. Q% w: A
;;
及时更新il的评价质量的评价
' g3 R, G  ]9 c1 }2 Cset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
0 R  I- k* }# U( tset l (l + 1)6 v' n5 D" i2 k. @, d# G
]* j: ~+ D1 V' W, ~
end' y* N1 C+ h) {+ \6 E

& u0 y+ k# Z2 m( Mto update-credibility-list
2 j/ i8 j" ]  ?9 ^+ H) {let i 0& I3 U2 g+ ]$ `" x
while[i < people], {# A- x0 X" U0 \/ \* U
[& r: S( i8 z- v
let j 00 }7 h" q" w3 q. Z8 j' U( x. D
let note 0: y5 Z  A9 U* ^4 ?; l. f, t# Z4 z
let k 0
" T( m% G, B! b6 `;;
计作出过评价的邻居节点的数目
: {& v: m+ X7 t$ d. ~) D5 }4 Owhile[j < people]' h3 i  N& l1 c% V5 i0 \0 \
[
& ~: g0 Q% j" M/ }7 sif (item j( [credibility] of turtle (i + 1)) != -1)
& c! f: Z$ i7 d9 u6 w;;
判断是否给本turtle的评价质量做出过评价的节点
# l+ P* n( V+ I. y[set note (note + item j ([credibility]of turtle (i + 1)))
1 X( s) o5 t" ^$ n9 X6 y;;*(exp (-(people - 2)))/(people - 2))]
6 e5 L, p' n1 k+ }0 I. k
set k (k + 1)9 B6 x1 z' |- }* O- C+ ~$ e1 J
]: M  _% k, D# m/ S
set j (j + 1)
8 [/ F/ L! @* {]
4 r$ y6 ^& ?3 Y2 f8 S6 Hset note (note *(exp (- (1 / k)))/ k)
: _0 V; N& Q) Z# f  _2 m9 w! L5 ]set credibility-list (replace-item i credibility-list note)3 ]" M* `. B- K! }" X
set i (i + 1)
" r! ]* S# K& y3 A: e0 \2 {]
& p; I! ]; F% q% cend8 {. Y4 W" O) |' Z

9 ^5 O7 e. ^" L/ c1 _3 n. B" ^to update-global-reputation-list! P1 {& T0 I9 Y. E  O9 |
let j 0
6 A2 q+ Q. x$ f% a; z2 ?  k8 Bwhile[j < people]
4 h$ d3 p/ u' u' B1 |' N* p$ a0 t[
# V* Z3 j6 `- \+ N) I% zlet new 0
3 L& e! W0 ~* y% o;;
暂存新的一个全局声誉& J; d- ]+ m3 z2 v9 S$ ]
let i 0
7 ~4 d( u. L. l" r5 x# @let sum-money 0
$ k5 ^& F8 W4 u: v1 u. nlet credibility-money 0% m6 j. a, R) p9 C  y$ L  X" d
while [i < people]+ }) L/ e. X; S1 y3 g& `0 l0 d$ y! u
[
" h3 ?, \+ K- c) W8 |: g/ uset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))/ |! M* o4 L+ d# _: D6 y
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) o" |& |8 `5 O$ W. K8 ~% t
set i (i + 1)4 {" r) l" C. T# \
]
! A  P1 g; v; o* }, c, r) Rlet k 08 u. R5 y2 ^! Q) @
let new1 0: d$ c6 g) A3 H. v9 I
while [k < people]
4 R! W% \8 c' U* M) c" Q, w[" f& J* k6 }+ X* I5 p' `
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)
: q3 \* h- A) q+ ?+ [set k (k + 1)
5 u) V# T  I" p/ A4 h( \1 C]
4 f: u4 \% I+ n3 i) Hset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 6 z0 n2 J* J7 m& }
set global-reputation-list (replace-item j global-reputation-list new)$ l: r8 x, ~" w; B" o* T3 a
set j (j + 1)5 R9 {9 k$ J/ F% |) l$ V& U
]1 s* Z4 P6 A: j  {  L
end
# M; Y$ D1 M8 ^, O8 U" M% y* a6 l4 b/ a. c8 E2 {4 i

0 g6 j5 n* F2 W9 b9 J3 O9 e
) v) e2 _; a9 K1 N9 B, J* u7 Nto get-color; f- U" S( }6 L* t( B& `3 Q
! d. v! o: N2 x" h2 k- g/ ?
set color blue
! i1 h# |; n8 N+ m: _& Q, S
end
; P6 ]% H) A9 J0 d" v9 L
0 y2 w1 J6 U9 \# x7 dto poll-class6 R! q' b8 n2 u8 h, C
end
5 L, ?* L0 @! G8 G! `
5 v; e, P" j+ |to setup-plot1
/ a) a- \+ {' ~4 m. _* r
4 A1 S) N4 ?  }- oset-current-plot "Trends-of-Local-reputation"
/ A6 t& ?' w" U* u- A! p

! q4 V6 a( @; k, e. rset-plot-x-range 0 xmax
7 |* S6 x2 k7 w/ b; z0 R

: l' g3 h; B& rset-plot-y-range 0.0 ymax
2 m, W- e# p& j6 r
end
/ {9 h& d& o, y' x& D* W
$ U) s/ j, e' e6 U4 Fto setup-plot20 c5 E' ~9 n  K3 o" H( K
3 n+ O" r" S, l" ^/ O9 B
set-current-plot "Trends-of-global-reputation"
# {1 E' h0 ^8 B, i

! t% t: u1 H6 V# u# xset-plot-x-range 0 xmax
9 _, C& l5 I; n7 k

' ^  r* i+ @: _1 I! T3 ~set-plot-y-range 0.0 ymax
6 E# ^* ]( R0 T. Q
end
) G+ d0 v9 H, n$ ^$ [9 K4 d  q$ a" V7 l5 ~9 T& ], n7 k/ |5 V7 |" {5 F
to setup-plot3" h0 X3 m  a/ x7 N2 B. c

$ h- \2 F: A% ?+ `: Fset-current-plot "Trends-of-credibility"
0 Y7 E4 [4 f# M% t. I
( K1 W9 P5 O: ~8 H9 V6 E$ P. a
set-plot-x-range 0 xmax

" Q' D3 R% z- A# n) s9 o+ {- _9 l9 C. ]& l$ D" D
set-plot-y-range 0.0 ymax
% c" D! W' Z% Q7 H4 L
end
, V" U) R3 {. K) \3 B) `) S0 l% k% v: F  K
to do-plots5 V" G5 @5 `  I7 F" Z
set-current-plot "Trends-of-Local-reputation"
1 N" f- O+ L# B0 u, O1 eset-current-plot-pen "Honest service"( m4 x* B; ]  F& R' p& @
end+ y( `8 ?! T5 K
0 t4 o2 y, d  P  x/ b2 h: ]
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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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.) v0 y0 a: t& I2 J
9 g+ o9 j, {! V" X; c1 ?
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?
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