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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:
# s" A6 V; P/ x, G% i2 k6 gto do-business ( O. A3 C. J1 X2 v( a
rt random 360$ ~& S' E- M9 C" ], L  k
fd 1$ w( Y/ [) {9 `! o/ X) f
ifelse(other turtles-here != nobody)[
- ]( E$ n9 r3 ?   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.5 j5 E6 p2 R" C" E5 [
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    8 q& I. `( h0 V4 Z! h% {
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
; q3 e1 H; B. N& W   set [trade-record-one-len] of self length [trade-record-one] of self# ~$ ]4 m9 L! y0 v, G
   set trade-record-current( list (timer) (random money-upper-limit))5 p9 }; ^! `: K  D# Z5 s. g1 {

! I0 ?6 f# a! W6 e问题的提示如下:6 r1 k. t; p, \

: U8 H6 ]7 [, t& _! X1 z7 merror while turtle 50 running OF in procedure DO-BUSINESS
. z9 ~' ^0 w4 I. `8 m  called by procedure GO* G8 Y8 U& E: v3 ?% j3 y* E' m
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
! L6 A. B& m; o& P" T
(halted running of go)* V0 @% t" h, N
  w( m7 E2 p2 N7 i* z' M
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~~" o6 ^$ V& Q/ B& p8 J) F9 d. p
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! C9 ~5 o. Q3 `7 d& x
globals[. X5 d3 y/ G- j" B" x# e
xmax* O2 s1 A: o# k9 l6 @8 k" ]3 d7 J$ B
ymax
  {  l& N" a8 v' A3 X, Gglobal-reputation-list# c9 q8 Q. x& t/ }
% j6 B! ]. h7 E, c/ n& |
;;
每一个turtle的全局声誉都存在此LIST6 g  N3 Z+ K- \" y
credibility-list
9 r: O$ h/ S+ Q% o7 M7 G. };;
每一个turtle的评价可信度6 B) C7 |( I0 E6 F& D4 _
honest-service6 \$ f/ l7 J# P/ y1 Y+ E# x; a
unhonest-service- c1 U! P) G6 ]; i
oscillation
4 @0 ]3 l4 \; ]* k* _rand-dynamic
# Y. n4 f  j. C* j/ C0 n; D$ g], |9 Z0 u& H0 @  p& k, u* P

$ W# k5 M. W+ @: b5 R. H8 \turtles-own[6 N& A: ?9 Q% Y0 e5 ~! P
trade-record-all
. h' ~6 L" U0 K4 ?4 j& G5 j;;a list of lists,
trade-record-one组成" C) x/ V, s- ?1 t- \1 x
trade-record-one9 h5 R7 h- N/ S
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
7 X; a! _7 Z) s7 Y* `5 H' @5 N+ q) _
;;[
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]]) Z& d# T- _4 u/ |2 }
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]$ ]: _, P6 v# r8 @; s
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
, @& h- \1 }, O+ r7 p/ Cneighbor-total
* s6 j# x# Y. R  R6 C;;
记录该turtle的邻居节点的数目
- r* |/ @) Q5 a3 t3 ?6 H. dtrade-time. a/ e1 }. K4 _6 o- ^: r; H# i
;;
当前发生交易的turtle的交易时间1 V$ X# z+ `6 V! w6 H, W( Q
appraise-give  C# `4 w- B7 I" \
;;
当前发生交易时给出的评价6 v1 U2 U( d" M& |
appraise-receive4 G% f  \7 ?# I" g3 p# o. R
;;
当前发生交易时收到的评价  ~% v$ w" O6 |6 e# C
appraise-time
7 i  d  [% p, W1 T8 y;;
当前发生交易时的评价时间. x' K. D, m: y: ^7 B, \" Y
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
3 K' n8 I3 L: Z3 t9 ~trade-times-total5 \0 o8 ~. U, E5 h
;;
与当前turtle的交易总次数1 q' W; M& Y5 d/ ^0 e# d! y8 [6 t
trade-money-total
$ \$ z! @0 n+ C' B2 [! p;;
与当前turtle的交易总金额
5 N- L! H! ?/ ]; e6 p% |2 |3 Slocal-reputation
, |) @( r& P2 Tglobal-reputation. t% l( V$ o/ `
credibility
% J5 v/ j9 Y' q;;
评价可信度,每次交易后都需要更新1 }! x+ i4 }2 M3 b0 B# d
credibility-all0 J* g( o- Y3 k+ 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
) D9 B# j( P# i- i, f0 R" f- r' T/ v9 w# A8 n2 y6 u
;;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
, t, I$ a3 z( c2 ~2 }$ w) x7 }credibility-one
* p) P+ K2 O; n+ e$ Q5 E1 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+ B1 Y" v% A* s. D4 ]% k6 h5 u% r
global-proportion& V( o; Q% b6 Y9 n4 N, C- }
customer$ f( @! A9 m) v
customer-no
7 w+ F* j- l& y' Z  ]# m+ @9 i" i, ntrust-ok1 Z0 [$ }. S! o) k
trade-record-one-len;;trade-record-one的长度
6 ~7 |1 H/ p, ]$ q/ {]/ z% p! Y8 F+ G3 n5 P
8 d3 j% N) A# _4 P7 N7 S& v/ |
;;setup procedure
+ B+ @, i7 Q2 q6 I  p% S/ f
8 B* {: h5 j9 ~) Z& @+ mto setup
" k7 }( J( k) Q4 j
6 J7 R' }1 s: t& P# E/ m6 Y: sca
' [- o- @# _$ ^
  E; ?" Q" v) M% o: I6 z
initialize-settings
1 C1 t9 s$ Q- p. S' S  N8 l( b
$ ^+ C6 O% B+ |1 K) x" y- p# z
crt people [setup-turtles]
8 e0 G( ]& _! `( J3 E8 Z6 d8 f
9 e( i8 N& E7 z, r* ~7 A  r
reset-timer
* v# S3 F( V0 z- m- ~, r& ]4 ]( z

( S* u+ X* a) U, J/ ]7 xpoll-class
5 _9 h. B8 b+ h4 @0 u$ y
0 I' `$ a$ z8 Z3 E* _
setup-plots

3 Z) R6 K! l/ q- x
! M  {  n' j0 p5 Ado-plots

! G( i! r2 r2 }2 bend& j0 }( y4 K4 c& k# d8 H% R. H

( A2 H1 q- E  M! @' V4 @to initialize-settings
4 u' I4 E6 I4 p# |: J6 j1 `: c/ A! J+ V
set global-reputation-list []

  Q- _( _5 c, K: ~# `
6 T5 S( y1 a! p& S. P5 M# s5 K3 rset credibility-list n-values people [0.5]

* K8 y) Y# y: V% H' s+ [5 `) `3 |( ]1 c- I2 m# A4 J
set honest-service 0

- K9 t1 q0 H7 F8 g4 S2 w: N8 H: u% V% V# Q& v# r1 ~
set unhonest-service 0

- d$ ]; ~% M0 L( [7 X: ^. D0 j: A/ w! ?, N6 T8 M
set oscillation 0
/ N. ]0 Z# G7 Q( e/ i7 q' D: V

% N# X0 `& i6 z- xset rand-dynamic 0

. a, f& T1 O$ u7 Vend9 L( B) s0 U/ h1 d% r- q1 E+ L
* U. M8 ?; x8 j* I) z. D$ z
to setup-turtles
5 A, O* b! O* u# R1 W8 ?set shape "person"
6 Z: A: L1 }: a# h7 D$ G4 ]setxy random-xcor random-ycor% ?& s+ c$ A* ^8 D
set trade-record-one []
* K3 ~: d2 M4 I8 D. I8 w, y

- H) P' f: n1 y# B/ g& U( ^' `) a1 Eset trade-record-all n-values people [(list (? + 1) 0 0)]
9 J% ?' {. E# \/ n
2 s% ]/ g" D' l6 C' Y; Z
set trade-record-current []
0 S6 \  O/ X* Xset credibility-receive []
5 @; ]+ z  Q, G( q) X' eset local-reputation 0.52 c, }# b# `8 _& `, S
set neighbor-total 0& x+ Z# f  u$ q- E( u" s
set trade-times-total 01 F! o) g/ O# w) n$ h9 Q0 U8 X2 w% G
set trade-money-total 0- j0 Z8 L4 a& o. I$ o/ Q5 K! [
set customer nobody
, \8 H3 V4 n" p, l2 ^" f: \set credibility-all n-values people [creat-credibility]
6 x5 r: ~" r  \5 G- qset credibility n-values people [-1]
, v. Z( P0 A1 rget-color
$ H. I; l' G  ]' L  j1 z& `

! ?- p- N. _6 ^0 z# P" {! ^! p) Xend
5 g5 E" p* U! V/ _3 ]+ ^* y' x0 T. [. a! v/ `0 J
to-report creat-credibility3 r% x- \' B+ D* s  c$ W
report n-values people [0.5]
2 Z4 C- Y, k! x5 j5 Aend2 a/ E: e& d) m/ Y( G5 \
. Z* p* q: `1 y3 s$ {( y% c  X! ~2 V
to setup-plots1 o- [. v/ ?0 D9 l

0 o) Z& W: E8 N9 V: ]+ }5 Qset xmax 30
2 A, q& q0 c, [* G6 @
& L, A# ~7 y% q6 T' E; K$ F
set ymax 1.0

# |3 v6 M; S( z( e" L% P
% b! Z% F9 j" H) cclear-all-plots
0 \( [' A  i) w- N9 [+ e: P, q

* d$ Z8 [" s3 l% u9 ~1 u* ssetup-plot1
( w2 ?- C& N5 u$ w/ O
; [: R& X2 ]! U0 A; ^$ C  x
setup-plot2
8 F5 J: O# x2 \7 \% P8 D
5 K/ p5 J, X; a
setup-plot3

6 x; o* A8 `' u$ `( H0 d+ {end
" R0 @. E5 r0 t4 P' ~2 e) }3 S
5 p& _% h) o" G# K* Z;;run time procedures8 G+ F, `2 I! M3 x) P" j* L
: K2 ?# w: B. n1 N6 L% @- n
to go
7 E! H% z  K3 a' j6 j0 q5 u
; U3 ^' ]7 C4 `ask turtles [do-business]
6 [+ e& E7 L% L; `( T5 v
end. }4 N0 F) y# ?) L# e" G

& d' w7 ]1 }! }& z8 b; M9 ?to do-business
# v. w! s; j) k3 {0 z
/ v. o# {% E7 e! ^/ D- w. x1 m
# y% {) o" |# ?: E7 T4 `
rt random 360
+ p, f4 _! |: a( k: B% N$ |6 B
# R. m, X/ V' r5 o
fd 1

( M1 S6 [% y* a# H) J# O
- v7 I& V" ?$ m: l" R1 difelse(other turtles-here != nobody)[

; G& w6 M6 _3 P  p' _. ~
/ i5 T* c; j: K7 m: Q9 Sset customer one-of other turtles-here
/ e# e: Z" N! b) }5 v3 w
4 w; S$ z. ]* [2 X  }8 i2 ^" Q
;; set [customer] of customer myself
) g+ t: s8 O& S
8 f5 S3 ]- c6 `) M' i3 I; P
set [trade-record-one] of self item (([who] of customer) - 1)$ R* @9 U: R3 y* H. l: f& `6 @. D
[trade-record-all]of self
+ X# w$ s3 \0 F3 y: E1 r2 |& W;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
: p, |- S, @6 ~4 ^8 d+ O

6 B4 T0 O: ]( Z6 b! @3 y# G6 Qset [trade-record-one] of customer item (([who] of self) - 1)
# f6 i0 n' S3 G: G[trade-record-all]of customer

1 C+ k! I, k* y& T  X9 `' R7 X; Y, R% I5 X# J
set [trade-record-one-len] of self length [trade-record-one] of self
# j( M% f" Y0 l0 `% h3 U6 v( [

1 s2 [; r2 E; M/ T& q. oset trade-record-current( list (timer) (random money-upper-limit))

$ G1 U* r2 m4 h4 R- ]5 G
! A% Q8 G3 J$ a/ l& |  Kask self [do-trust]
6 r$ S, b' V; h* o;;
先求ij的信任度
. r: k8 U: }; S% m) Y7 ]+ F3 q8 o  O# A0 f' W& n
if ([trust-ok] of self)8 \' G5 x4 f0 m5 k
;;
根据ij的信任度来决定是否与j进行交易[9 l) K. K1 t7 ?5 w( C8 q& t
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
# I  w9 H3 |; C; _* \3 L3 r4 h9 q) Z& z( J# L3 C* ?/ b
[
9 [9 W7 z  T# F1 u9 p& k1 e/ n
$ x5 o. Q5 B" N9 j& M* o: P* x
do-trade

( s/ N# @3 b5 ]  E  D+ _5 x5 B$ v7 {
, O9 K' B- X& g# g0 }; V5 ~, wupdate-credibility-ijl
% M7 p) z; {" B
( f2 q5 L* m7 q5 u
update-credibility-list
: \0 M9 }9 {9 i/ c: z

7 j! B. Q) Y1 Q# n& U5 W5 j. O) K0 q8 N; |
update-global-reputation-list
+ b! `% |) G, |6 ?6 c+ Y) B
" O1 Z( A" C/ a
poll-class

& ^' Q! V0 J9 g4 y( ?4 W
' W! [: l# M4 Wget-color

7 e5 a$ w8 j; `4 j2 U# \3 F+ y0 B1 S  E
]]8 L& M& |9 `) S' u' l" B! E
9 |( G- @- q' q
;;
如果所得的信任度满足条件,则进行交易
, H9 \) Q% J: r3 u/ J* B/ ?& t# x3 {
[
: a' C$ e6 s4 N1 i$ v, [
0 b& u, E5 J) P+ k1 `" a6 {' f. x; e
rt random 360
" i6 b3 u: e; f
$ t/ \1 X: n0 v  G7 O
fd 1

, q6 H, T, N0 o
7 r* y6 C/ r0 m( R. F]
) l- V" e" c" [
1 K+ m, A5 c* g3 V1 Y1 G
end

) J; c" k" Z% R+ ~/ T2 {7 ~  u, A: V$ b- r6 ?8 v/ U, l/ @
to do-trust
0 N; L7 I% F  ~. N. [/ @& [# Xset trust-ok False
0 v/ E: g6 T. y4 o+ e2 a( [: F3 c  a( N& ?" O

& W. N& n' ?4 [$ V( j9 n( ], @, M% glet max-trade-times 0
3 r+ M5 I' `2 p9 cforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
, L" z) t5 q" e3 H8 h+ Dlet max-trade-money 0
  S/ G3 b% u1 ]0 D& ]- m  Lforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]! g3 Z3 s3 M; L# a$ }, g$ n8 ~
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)); [! R4 h5 Z! @
5 u- ~; f) j: a5 @+ m0 n8 u

! x4 a$ y# P4 Q7 B9 s  Kget-global-proportion
8 E. S+ v$ u" s! R" }! Ulet trust-value
; [9 k8 {6 \+ m0 X) H/ X1 e4 {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)

: r0 J4 i$ m$ e% i7 G2 F6 h* oif(trust-value > trade-trust-value)
! v  h! n, H2 y# g+ m[set trust-ok true]8 u: W9 q2 V6 t3 d7 B0 M6 T
end
8 I7 X' o7 n$ E0 n1 g
3 Y, d/ V; u8 h! Y! F( F4 {to get-global-proportion
1 R$ Y5 D% X$ Hifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
. ^' m. _6 a. j( ^* F, v6 A" s: _[set global-proportion 0]
) T7 b# W; L6 ^) ?( F7 w5 I$ l[let i 0
4 t% a5 t- w1 y: h1 [0 \0 q$ H4 Plet sum-money 0
+ _8 I3 t: I' b  xwhile[ i < people]: a% B% F9 g/ F, Q) c7 B; h1 w' A
[2 \1 p' F) t6 y( V" N) U
if( length (item i
& f! i; ]8 d7 \0 s; U, m) D[trade-record-all] of customer) > 3 )

0 \$ m  O) a, y, T[
0 c# v" Y5 h, n$ h5 f0 q! jset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
  X, L( m+ |3 z9 m- ]' V) [, p]
. V* G, X) ]- ^9 J9 c' m]2 M' B0 r' a6 l. N
let j 0; ?* Q: y  O. a6 M7 g1 ?; t
let note 0/ [3 x% |3 }2 f7 O& M6 {) X, G+ T1 z
while[ j < people]4 w  M% R5 P3 q' x# v) S
[
" a5 p8 u, Y7 P2 V3 p# z+ vif( length (item i
9 ^! H( u% k% t; |[trade-record-all] of customer) > 3 )
) S( {" Z/ y( K( }8 Q
[
: s0 g5 b4 C! T% `ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
. w, [3 q. N8 h1 j% j8 A' H[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]7 W5 s# L  A7 |1 h5 ]$ I+ C7 h# `
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]+ f7 s, [  s. @
]: K! x2 I; T- a0 r7 R5 z
]
8 N. V( J  ~6 q! u% xset global-proportion note, p! A% q2 Y/ S. V
]( @9 w) c) ]; K7 W+ d
end# l9 _6 X' d# w, @: P$ d) O

4 H6 ~8 Y, `- D: t- [0 z- |: H3 Z# \to do-trade. Z$ l$ X5 C. l' A: r( B
;;
这个过程实际上是给双方作出评价的过程# X; ?* k3 e/ n: J
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
) \) L( Y9 ^1 ?set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价- ~7 b/ C$ R1 J* T* g' c
set trade-record-current lput(timer) trade-record-current* }) m. B9 G9 o& W1 `1 l
;;
评价时间
# T. L" m1 ^- M5 bask myself [
/ f' m+ D" s. M2 V! G! L  B( S9 o4 qupdate-local-reputation0 K, w( S* W2 ?. y( ~' ~% A
set trade-record-current lput([local-reputation] of myself) trade-record-current' g" x0 }4 E: ?+ S  D
]
" Q; b6 |* M- n8 }' @3 {, Uset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself% O1 M  o4 }4 r/ w8 n  ?+ e
;;
将此次交易的记录加入到trade-record-one
. O' m5 X* D7 E7 X: G% E7 Y1 Wset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)4 E4 b6 V% d  a2 I/ h
let note (item 2 trade-record-current )
3 H# \! O, Y) z, u0 k9 ^0 Sset trade-record-current
, b7 c4 w4 Y. j3 J% \, I$ o9 }8 `(replace-item 2 trade-record-current (item 3 trade-record-current))

. G+ B7 ^! r& Q4 x) `" M8 y7 mset trade-record-current
% p2 }: g7 i9 g3 T(replace-item 3 trade-record-current note)
: Q& J0 X) u7 `. k# K8 M. D: ^: [/ K! z. c- E. U

; i  O' {: r( I4 S, J/ u1 v" sask customer [
! y/ C( I" _% }7 a, J: {update-local-reputation
; J1 u+ e* x. a. {7 ~3 Eset trade-record-current
3 K! ~5 N; \+ J(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

1 G; Z$ A1 Z6 ?; \]
( k# K+ ?9 ^3 b
4 \" x# c% w- t2 s* {8 R  l
. u/ \! f2 s2 U5 w2 L
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
/ G/ z9 `+ u4 O: {5 N

7 f5 B+ t) l  |3 r- D* ~set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))" P; q- t1 N/ ?  E
;;
将此次交易的记录加入到customertrade-record-all" `$ D5 |" Z" C
end7 F: [9 S0 ~2 f- L- l" j
0 m' v' v& I1 J! F
to update-local-reputation/ ~; _; |5 U. ?& i0 ]6 X( z1 Z& c$ t
set [trade-record-one-len] of myself length [trade-record-one] of myself
$ f2 E9 I, f. F4 n& S3 k4 Q! h2 L8 n0 g) A

7 [6 u5 ^0 v1 q0 h. q* z;;if [trade-record-one-len] of myself > 3

0 c+ H& K* v5 s4 Yupdate-neighbor-total) U, P; Y9 B- j+ L2 C& _
;;
更新邻居节点的数目,在此进行
+ ], `; N) d4 z) U* Y1 @* `let i 3( W3 @$ p# u! g* `3 j- X# E
let sum-time 0
* r' f) k5 U3 t& O2 }5 X! Z, Nwhile[i < [trade-record-one-len] of myself]! A& o, `# V9 }* x
[
( D7 e' P# \# Mset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
8 ]: x1 y9 s; Z; L4 Fset i
* }$ l# S- f; c( U0 p: l1 V( i + 1)
4 H/ C0 m( ?  p5 K+ N& m* P! ]
]
+ i, s5 b% m( u6 t- B$ `let j 3
4 T" z, \' H1 X. Wlet sum-money 0
; G/ T1 Q% i6 K+ Mwhile[j < [trade-record-one-len] of myself]
+ Q0 h7 s0 ^( Q4 B: t[
9 }0 \8 g9 X& T* kset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
$ B+ f9 w6 @6 r! Oset j
  A/ N4 z6 S/ K- B1 n# _( j + 1)

  R! o1 S3 Y" P( h2 {]
* }5 t$ o. V; N2 X% \let k 3" Q8 J9 T  g$ W6 Y
let power 0
  N) T. `, W* x7 l6 Slet local 0% i/ Z7 K. e2 Z# j( q% C
while [k <[trade-record-one-len] of myself]
# Y( k. L& M. @* t* E# K. u- Z% |0 @[
- k' b- }3 f9 {/ Bset 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) - e6 d# a9 r% F( v* z6 [
set k (k + 1)
5 L$ M$ C; L3 A]. S2 O4 J! h" r) e8 V& \7 \
set [local-reputation] of myself (local)4 |  R- ~/ l# E+ |
end
+ A+ U- B6 s% P( E, S
; Y4 f$ a  S1 \( G( B' Bto update-neighbor-total0 F+ K; R0 s: F, }4 @7 ~

( ?, _/ D  P* P8 |; f! {if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
, \2 c$ W- Z6 ~
% y0 d/ ^0 U9 d. S. S5 s
! x, W; L; e  M7 c! G3 F
end" N# m0 D* Z/ J( a# I3 L8 ?
5 h1 }7 f* l$ F+ M0 n
to update-credibility-ijl
' |9 F5 q1 y; F- f: q4 R8 B; l
6 y& i' a& D  x1 ~! G4 A- o;;
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。% Z6 `' L" S" J' T
let l 0
& s* M  ^% L8 H9 _& K2 S) \while[ l < people ]' V! J! N) w) A
;;
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
5 j3 t6 G( k1 W  @* ?[
9 m" m: S- N3 Q# K6 y; xlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
9 g, A3 v. ]; F+ G8 _if (trade-record-one-j-l-len > 3)
; _6 ^& Z4 y  y9 e& q, i, ^$ ~9 t! 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
0 r0 j. ~, V1 ?let i 3; z1 `# {5 D9 X7 e2 u1 n
let sum-time 0  A% D7 m; v3 X# x
while[i < trade-record-one-len]( \; M8 \! B: t3 Z
[
# H! m6 h; [, y& @4 Y" N+ T) hset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )0 s( l0 K/ m; u7 M" E  h0 L& ^
set i/ E! V- u. M' V& Y- z7 ]
( i + 1)

/ a, R5 u# `, s9 g% l! t]: c* P2 s% B% ~6 P2 d3 e9 v& t# L
let credibility-i-j-l 0
8 w# f7 t3 x+ \% \;;i
评价(jjl的评价). y1 |  H3 Y* P$ h. E  a/ l" G
let j 3- L6 l( Z7 N* q' I, O9 n
let k 4
1 K  M& K3 b0 e- @8 ^" Awhile[j < trade-record-one-len]
. V7 }7 D+ o: R& i! Y7 ?) t[
7 r6 E( c* K; h' Swhile [((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2 E+ g) R, q8 r$ t' ~- }
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)! s6 ?, c& ]  E( o& @1 i  \
set j9 Z# b( n6 e) E
( j + 1)
$ M; K" }. Z( ~0 @, X2 d- E
]! Y3 n" D0 I4 g0 E, 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 )), n* A# L* `% U4 s

1 k; _+ N9 i. z, N4 F7 l; O

+ ]  L! P8 n2 G7 \- I$ \: qlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))0 R% L8 M) t9 b$ F; ~& @
;;
及时更新il的评价质量的评价. ]1 C. S9 n/ ]: W9 s. A) y
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]* I' ~- q: b' }' \
set l (l + 1)
3 ^* T# p, t6 o( T. d]
  h) t" X( x. s& M1 O& Bend/ [) E4 f1 H3 F7 k, p) ^

0 I. L4 D& s* Q+ Q7 p& hto update-credibility-list2 B& o. x( o9 g7 O
let i 0
& M# }9 T8 g6 F) R8 a/ @' Cwhile[i < people]
% h$ U8 \5 a( `) ^" ^[
( t- x% W  Y4 P: F7 ^, plet j 0
% |) p( l  g& {! {4 {let note 0. I/ g% {$ C9 S6 i; Q. M+ S5 Q, G
let k 0
, L; s. T& G6 K9 K  J;;
计作出过评价的邻居节点的数目+ L/ N+ i; b8 o; {
while[j < people]
) r2 m# \' P, x$ w  M4 m* {[
# X  E: V% R7 G! k7 b$ d; ~if (item j( [credibility] of turtle (i + 1)) != -1)
& f7 D! H  x8 O+ {5 ~' r3 y/ J;;
判断是否给本turtle的评价质量做出过评价的节点
! [3 a* X$ A' Q$ @[set note (note + item j ([credibility]of turtle (i + 1)))) G, M2 S8 \) n3 Q; Y
;;*(exp (-(people - 2)))/(people - 2))]
8 w  F4 z! p$ X& U: K, z3 [/ [6 ^
set k (k + 1)/ ^8 T1 b+ K. g( w
]# u" v! J  w) Y8 T* |$ r
set j (j + 1). i! ~+ e( k9 w- Z
]
* r7 [8 f; s# k- b' p9 Sset note (note *(exp (- (1 / k)))/ k)2 a! P; n- [8 a* h8 q% V
set credibility-list (replace-item i credibility-list note)
8 Q$ k6 j) l8 h/ H2 M5 B8 R7 E& Yset i (i + 1)
9 x, ~) y* u4 i]
5 m% _; ^; T# a3 H% u% d2 Mend; [( U' q( K- d# V5 z/ W

& B* y' f; K: f6 Y7 z. y1 M5 xto update-global-reputation-list
1 Y4 ?" c' A: L4 ^$ `5 w$ B8 @! [let j 0
: ~6 A% I0 L0 z/ {while[j < people]
/ D( c% O& n. [% @% D[* o# q/ ~% a7 t% z; Z2 t8 K, N
let new 04 d: }# H% [2 ?- v' V
;;
暂存新的一个全局声誉# v: Q4 q0 E2 e4 {8 J
let i 0
7 b- l2 T) Z) H. l: l+ W2 v, ]0 ~* elet sum-money 0
" X% f  }% A5 b! ^6 M' z( Glet credibility-money 0- R) ?& \( `3 n( \. @
while [i < people]' {) T* o) X  E. ?* A$ t
[
4 r, F! @' y$ e( F( r4 J7 h& Lset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
! O5 J0 H) l. Oset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))7 H2 J+ H% s/ F; G
set i (i + 1)
& z! }# K# J% |5 Q0 v/ D5 H]
2 N/ X( f' ~4 b- x! ilet k 0
% T& m. B0 d& `- {: J- h/ Plet new1 0
3 X* c9 E! ~% G3 Q9 r; e9 J, V5 [while [k < people]
1 h3 w+ ~' y3 Q1 k3 Y4 H[# B/ U" K, _. W5 g+ N3 K$ b
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)
; U* t3 Q: {- B; z: h/ R# e- Rset k (k + 1)% R$ f* _0 T* F* y1 ~) b4 N+ x6 N
]
4 {1 c+ w8 N' A" R+ Jset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ) M: S( {! g  C
set global-reputation-list (replace-item j global-reputation-list new)5 g4 h1 @' O; l6 o4 Y3 e
set j (j + 1)
1 r& N$ ^! h- m]( ~( r$ X- o0 Y/ `2 q
end
$ H$ `# h$ \& \9 K% }) ~8 d" V( r2 ~1 f; D

; B, O' T5 g; w$ \8 Q
* Q4 D, M( i, ~to get-color
8 z6 F0 y7 m! \& a. {. }6 `. p
& n/ e( L; N: ~0 O# [set color blue

/ K$ M+ N. V- I* l3 A/ iend
( ], Q* d" y4 O) u7 s$ L; {1 C4 b& M6 m, H% A
to poll-class8 V) E& r* k: c. C
end- N& g0 ]3 t; }$ G- o- k$ J
$ X( i. W$ |& n. Y! X
to setup-plot1
2 T4 l' P# b6 g7 b- ^  W
. q+ G% V* f" t* e/ tset-current-plot "Trends-of-Local-reputation"

+ u4 I1 C  @1 t, r
" Z- ^7 ~5 b8 q6 P& U( f+ E& bset-plot-x-range 0 xmax
- J8 P4 G: E/ [4 \7 j) G! s5 @

! c) w/ u7 D% H( F* `set-plot-y-range 0.0 ymax
9 T+ B. c) K8 }
end/ r  @& ?/ o+ s: D% ^5 w; R7 z

5 \0 ~6 N$ H  V) W' o, F( Gto setup-plot2- ?; {# V, j2 z: j1 x% w
# N, x- Y3 U; X4 H$ i
set-current-plot "Trends-of-global-reputation"
& n8 x! m6 {0 G! g
$ S. U7 N+ Y. M! U
set-plot-x-range 0 xmax

" x3 I2 [4 [0 Z" {, p
: i  ~5 @6 v2 {$ m7 A1 N8 e4 Oset-plot-y-range 0.0 ymax
) N% t! C' I3 q) J2 N% c3 s: ~
end
' L- G8 Z# y' S( u# F7 j2 a( e) {0 u2 ]8 p- ?
to setup-plot3
4 C2 f  g% K1 w' ]# O/ P- D: x
) u$ U; _3 c- ~7 s' vset-current-plot "Trends-of-credibility"
  I5 v! R* W. m- ]; H- q; \
3 ]: W! Q! ^% z& {+ {3 i) E
set-plot-x-range 0 xmax
7 X+ g; m* X. m0 S/ U
1 o' L6 J! ^8 j2 I6 i0 j
set-plot-y-range 0.0 ymax

. J0 o% j  d% Y& B; b/ D- |end
4 h/ |, n+ ?4 z% b: g
% @2 V+ n# L0 ], F' z7 A. a( Eto do-plots
  C2 V* ?  I* k# X2 nset-current-plot "Trends-of-Local-reputation"
' w4 m; n8 ?2 H4 Q- g; R# Fset-current-plot-pen "Honest service"4 u+ j; _% q4 V! W& \( q  l7 L
end& [$ W; G& ]; |8 E0 R  i

7 d. }4 Z, _4 i- I" O1 a- {1 W( Y[ 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.5 _8 ^! P9 d: z& _. V( x: x

' c4 ^6 L6 {7 M# T1 \; P' V' @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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