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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:9 A7 U' d: I5 K- C4 u
to do-business
' r# K; N* J5 r) r! F% e; {2 X7 N* x rt random 360
8 V; E/ |; v, H) c; X, t, { fd 1
3 }/ p7 E: L$ x0 D" \ ifelse(other turtles-here != nobody)[
$ c2 C& v# `# f* e9 E+ S8 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.
- Z3 y! a0 q: @5 G   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
) c+ h$ B! n; i+ S; y1 A* t- \   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer; g2 _; J; o9 o5 p# k5 i% ~' P
   set [trade-record-one-len] of self length [trade-record-one] of self
3 [& W# ]9 A8 }' H6 U   set trade-record-current( list (timer) (random money-upper-limit))  j9 C% X) g$ Z

4 f4 Q6 N7 S$ j  B3 l问题的提示如下:  J$ q5 S, G" |: i1 G0 t5 D4 D. C
" |( x) L+ \4 F& x
error while turtle 50 running OF in procedure DO-BUSINESS% c3 t3 x, Q4 b% s7 s, t& d
  called by procedure GO
* V$ H+ O! q( j# U, T) b  vOF expected input to be a turtle agentset or turtle but got NOBODY instead.
. \* Q/ l" w0 W" N, u0 E
(halted running of go): o7 I3 U  O% t1 d  j& w7 X2 K7 k2 l

0 O, ~3 d# j* {+ z4 U) b/ @. f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~~* B' U4 B! x  l# X
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1 S+ ]! @% t8 A5 M$ g$ ~" t7 U
globals[
' r/ {, e6 b; z' g+ \4 qxmax
0 X& O2 S, _3 I& m4 oymax
) F' z2 ?* A* M3 t% e) q  x0 n1 qglobal-reputation-list
5 n, k; V; _; m- q# A$ n. D1 Y+ W, U1 B  Z6 N- X, o8 {
;;
每一个turtle的全局声誉都存在此LIST5 p# K0 G4 Z* ^! L, t; r
credibility-list
8 _  y; ^" [. ]! A;;
每一个turtle的评价可信度, T7 A; k' W9 M2 E4 L# u* P& L
honest-service5 ?* R, a% K& ~/ d2 x8 A
unhonest-service- v( G. R& e! T; B$ ]6 j! E
oscillation' g* o8 K; u. u- u+ D. S6 C( G
rand-dynamic2 _* k( o: l" R8 T! B* T: B
]
# p% W; C0 `& Q
: K; }( `# V! Z" X% f5 Uturtles-own[( e7 _/ x; s  }/ E
trade-record-all4 i: n, P: r0 Y8 g% \% Z/ f
;;a list of lists,
trade-record-one组成1 f0 Z/ G! f/ S; J
trade-record-one
3 {" L% m; p) I- R& j  j# Z5 I7 D;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录) p3 F8 w9 R: z! u. V( B$ h1 E

: C2 y5 Z. m/ H9 f" H7 r;;[
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 [& x; r8 \8 [- ~9 x3 E" X3 }1 etrade-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]
+ f4 r* }% U' @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
2 a- A7 E1 `2 A! a, h. W( ~neighbor-total. A' Q, C. g7 ]2 v# e
;;
记录该turtle的邻居节点的数目
4 i6 c8 a. D- v6 M' Etrade-time7 ?9 P+ k2 S9 b$ T
;;
当前发生交易的turtle的交易时间: Z7 {. |- `/ A& Y9 x. A1 b# E6 ^
appraise-give9 w$ |2 |! B6 x1 A
;;
当前发生交易时给出的评价9 I3 m9 c4 Q* @+ |6 I6 \  {
appraise-receive( M4 v$ C# J3 Y3 e, o; H: j3 `4 j
;;
当前发生交易时收到的评价
9 }1 `. a1 A/ i6 y! Uappraise-time
5 ]3 e5 ^3 L+ ^& L0 A;;
当前发生交易时的评价时间
! @2 R' Q8 e8 E7 J6 t+ {local-reputation-now;;此次交易后相对于对方turtle的局部声誉
! C8 V! ]; o% C. ]) \0 Vtrade-times-total
4 t1 }& a, ^' m  C! C;;
与当前turtle的交易总次数
0 D' t8 Z$ \9 `. `trade-money-total& a' J% S- y- X& l( B6 f# q6 V
;;
与当前turtle的交易总金额
& _" ^# P& ]* D- u4 slocal-reputation
2 a: g- b" J& _2 _. H& Bglobal-reputation3 z- \% [0 |9 g" s  @, Y/ L0 t
credibility; Z" V  t8 e0 N' s# D
;;
评价可信度,每次交易后都需要更新4 J* P; i' k( j
credibility-all
' P/ ?1 s6 M8 a% N" ]7 D  I& Z;;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  F/ H. c$ n2 m' T
2 ^) O$ ^7 `  V3 N+ O9 Q4 s2 g
;;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
0 C; X) a5 q8 t% zcredibility-one: c/ j9 r6 ~" @) m. y
;;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 U9 F: y5 {1 S/ D1 i9 {global-proportion* e. [9 k0 Y4 r; L
customer
& C# e  C6 L) s  Hcustomer-no
- `! F4 Y6 k# b8 N  F+ xtrust-ok
/ ]* P3 u2 q/ ^$ h" H. ?4 V& k+ htrade-record-one-len;;trade-record-one的长度
+ ]% v- u7 v, X- G; u], k) @) s; J) o" Q" `
8 R* H( U! B- k- }3 B) o
;;setup procedure9 d, E% j7 K! U, M! l

% Y" G  b% J6 K" \& i& R) X* sto setup7 G; L' v! W9 v. |+ L, Y) d

3 H  ]5 W- B" R# g$ c" T; Tca

( W1 F# h( ?: S$ |: N$ E( G) G; }4 t6 W, y! ]
initialize-settings

) T' n  O2 b5 D$ i4 R3 W6 c- ^6 M% m& q( B) J! S
crt people [setup-turtles]
' q- ^: a0 {. a! T. A9 ~/ {: {
8 X2 y6 u, u8 w8 x' I
reset-timer
6 k+ n: Y( `7 j9 U0 v* B
9 ~4 B. ]) Z) ]8 E7 k& t1 J
poll-class

0 Z* r. `- f; X; R6 a( ?) }! K1 w8 r) ]4 F& }% t, x' |, M
setup-plots
+ a; u1 i$ i7 q1 I. \
8 N0 W1 _  @' M6 T
do-plots
8 [6 e- B% W% }
end" K/ M7 ]1 m: _

8 E2 x  k0 l0 |2 r* a9 X) \) ~; uto initialize-settings
. h, Z4 `7 K4 j* ~3 x. E1 O( S7 ^. A
set global-reputation-list []
  [. j. n; x/ U9 k

  r8 n5 T- o8 eset credibility-list n-values people [0.5]

* K: p) ^, y* q9 w* T; x0 D' o( M/ I
set honest-service 0
' u3 k9 c. Q. h

8 y6 W* N/ F0 W( r9 V5 ^set unhonest-service 0
/ Q2 O; r8 C! j# b& P- x
9 [7 G  j, ]- ]8 p" @
set oscillation 0
5 |4 W3 x9 t3 p8 H7 i

" ~7 G2 a* J+ M/ d5 _  \' Zset rand-dynamic 0

; M2 T, J: Q0 y' yend9 e3 n+ v# z- i7 w% n3 i# u/ I# U

  I) Z# @# m9 m" |to setup-turtles
: m7 N/ N' K$ h8 A/ Q- Nset shape "person"7 X! A8 B( l, v  w9 P# ^
setxy random-xcor random-ycor& j: Z* [# G$ \! c' O
set trade-record-one []
. l1 x' @6 L; I+ J" F/ ^
8 B6 r$ b( D5 L- o" w
set trade-record-all n-values people [(list (? + 1) 0 0)]
2 X0 T; s$ a& s( E& n
8 |% t* c. C* [% R7 e& k- @
set trade-record-current []
+ O" W) Y5 `& H! c' F$ ?2 u8 Zset credibility-receive []* W# m! a4 @1 R- v- W, l7 }% k7 L
set local-reputation 0.5
. _# t; ~  k2 g) k6 Q: Wset neighbor-total 0+ L! u7 p  [7 K
set trade-times-total 02 M1 T- T0 j9 C( D/ y8 y. F! u% \
set trade-money-total 02 i, r- O! H, p" A& @- A% @
set customer nobody9 K6 W( y% _# d$ a1 r( K: M, K6 S
set credibility-all n-values people [creat-credibility]
' T# F/ M) Z# @set credibility n-values people [-1]2 J7 I% M5 a7 X1 A( A
get-color
6 g9 v) t0 _8 [- ~: n
4 j2 \/ [. I% }/ t
end6 t1 w7 X6 _! j  w* _. v
8 Y" \% P* y" }) Y& V2 V
to-report creat-credibility% w( l1 A/ Q; d6 \; P( Q9 n( J* M5 K
report n-values people [0.5]
6 P. h% K5 d  w$ ?end/ |" ]: ]0 y0 D/ l" m

. P+ K6 d: g7 ]% p1 bto setup-plots. l, ^) z8 B6 `" j6 Q
' i7 F: h7 I) t7 z" W
set xmax 30

4 j1 R) g" H( _+ P- \8 h3 t* D/ {/ L: M6 T( u* `7 z! t
set ymax 1.0
( x& k$ t- e# y& F4 e' h* K
; ^, @+ s- u* S
clear-all-plots
9 ~4 p% Y3 O/ j! Q
* j9 i" Q$ u# i) m! Y5 u
setup-plot1
" X+ p" F. N7 i" U7 s; O6 M
" [# W, ~2 p- l# r0 L/ f2 _
setup-plot2
+ x" ?+ H- M& i3 Y+ x

, q& G( D; ?7 p0 y7 m# Bsetup-plot3
7 `3 z7 s# n( E. h
end9 R) n7 F0 A1 b" p7 h

- p5 n2 n8 |  a  B;;run time procedures
- R. U5 j: A. b, `) F
, V  T" r; Z( ?2 m& Tto go0 ^$ B; Y( h# M0 F+ h

) f* n3 T) d1 N7 k5 J4 Q2 Nask turtles [do-business]

* m; i, S' V* e( V9 y2 q* X( @! Bend
! F: q5 O% D( K0 u0 k- [
9 q) }2 Y& j# ?to do-business 9 O$ O& P% e7 G9 @* x
8 f8 B( X3 _4 \. A4 O0 w+ F# B$ q

" J7 K3 D3 x$ R; y, |2 F0 O8 X9 Vrt random 360
5 j  x: o2 x+ y2 W1 q
# W5 T( R, x+ e7 C
fd 1
$ r- A" q2 d9 [) M

/ B* F6 P% p7 s/ q* j2 o+ Eifelse(other turtles-here != nobody)[
2 F4 E: ^0 M4 T5 o7 \% q
3 }0 _; w. O2 P6 u' y& t) P
set customer one-of other turtles-here
& ]7 I! B) P# Z3 T" K( ^7 ]1 X
' ~$ S# R' i$ Y
;; set [customer] of customer myself
4 e  a6 Q. i# q# l! q2 A6 N
/ A" R# ]. E  N+ R2 x+ n# H
set [trade-record-one] of self item (([who] of customer) - 1)0 p$ p  B. t8 H
[trade-record-all]of self
; m# c* N9 c- {+ A* K0 ~;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
$ f+ g9 D& R6 a: h$ u

0 Q! b) M4 v: k. a% r+ t+ Lset [trade-record-one] of customer item (([who] of self) - 1)$ |$ M, n! d8 [0 q
[trade-record-all]of customer
% l1 N1 r6 z- k
- [  W& D& C7 X2 Y
set [trade-record-one-len] of self length [trade-record-one] of self

5 _8 `, X9 u. E3 N0 Q; A. F
, o$ _4 n- U: Wset trade-record-current( list (timer) (random money-upper-limit))

2 l9 B6 m. b# X0 n8 U
# m9 t# b( A& eask self [do-trust]8 G: t0 `2 H' E
;;
先求ij的信任度
& ^5 p2 H1 q7 q- ~$ R' Z3 U' o
) M  ~5 X$ V2 N% f) tif ([trust-ok] of self)
8 b% N& e9 u9 a7 O0 N;;
根据ij的信任度来决定是否与j进行交易[
# P1 {! H% \6 X- @3 Cask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
: y& ^- C% ]) {( z
+ i$ U2 c8 j* O1 X/ N6 @, e9 Y6 w3 |[

3 ^, m7 g7 u; z4 s0 k$ }0 p6 |5 K) I, |9 ]  y
do-trade

8 X: v. f5 X+ z& |+ ^5 ?
# B5 m* l8 Y3 D- i0 Cupdate-credibility-ijl
  L% [, y  C5 B7 n4 M" Z" [/ }

: }2 D" L. b3 G" V$ `update-credibility-list
4 O* H6 R. x# `# ~! n9 c

. h) y7 d; v9 U( @7 }% L
% [) E9 Y. k6 ~( oupdate-global-reputation-list

7 k4 x- @$ p3 b/ `1 L" e9 {& ?
) H0 |$ b, @  q2 @) e. Z1 _poll-class
% c, o. X. m' F$ Q; [6 I+ F
8 d( d! _: S3 p
get-color

7 s' {% k: [7 x& |$ X% L2 G7 |  f3 k3 v* N( J' Y+ H3 c
]]4 {, v& m3 d& f: V( L) p9 }3 K

9 G! T/ Y3 }& {% b+ l# l& n; i3 D;;
如果所得的信任度满足条件,则进行交易
  a! E7 u: V" K/ V; J" ?: J- M
8 P- X* J1 _: Z7 Z% l3 |' C' `- w1 ~0 H0 G[
9 ^. K# E$ _9 y( F0 u: P2 F

1 P% r# z! P9 C/ Y! hrt random 360

  D& Q% a# z* R/ p& O) P! U+ ]8 H
/ i- V! y4 Z/ O0 W# sfd 1

+ U- B4 a. ]- ~' u2 w/ g$ A! u& u3 O6 [! `+ {+ f
]
. a5 T1 Z; n7 y7 K6 o4 D

5 B6 M2 H- Y# p8 U/ k8 `6 F8 kend

$ p1 E$ e: z; i
" O% N( m9 M5 X- cto do-trust " x; g0 y" }, N8 f* l# n- b( J
set trust-ok False) t+ n* K; [: S# m

* z9 [* Z, l0 s. X" c0 c  ?( j( ?4 o7 E

* a& D8 C) l" g  V  flet max-trade-times 0. j* e# B2 _4 j- J' C2 _: |
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
" d) ^" y- H  P, r  xlet max-trade-money 0
6 W' [! E' W7 g% W* Yforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]], n/ B1 |1 M, z/ m5 |4 M1 W" K
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))) g- o' f" U* e9 O8 G

+ Z3 k8 ~; T6 d0 g- ]  V" c2 p
6 ]5 ]+ `+ P: r* Q( r3 b
get-global-proportion
* {; g9 t3 K+ P. e, q; o1 B% alet trust-value
/ A# l+ U+ q  U5 s+ u2 W: u% g* 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)

1 _+ `. p* N2 P" J8 M2 y8 V$ a8 nif(trust-value > trade-trust-value)" R. y# }8 _5 c! S1 |* @8 J
[set trust-ok true]
) r$ [' g" v! L- E" M2 I. `end
) R; K: T8 D7 I" y+ W  O' Y3 g$ O  k- m0 |6 w
to get-global-proportion- ^) @' R) F% V+ h
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)/ u" b) ~, a0 [) {7 C, p
[set global-proportion 0]
" a( E+ T$ S6 \7 b& k3 F4 I[let i 0. y" H( w1 q; j6 C' o) E' S
let sum-money 02 r, ~; S& \0 B, {, Z7 U3 F
while[ i < people]6 T. b5 Q' s4 V6 X0 S3 V
[
" T7 m; D5 @, r1 a* q% qif( length (item i
9 Y" X( c3 U8 K[trade-record-all] of customer) > 3 )
4 _% v! E/ Q5 Y' J* Y* G# H
[
% R7 L% B: G7 P7 eset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
8 h; }3 S7 A3 ^4 Q]
5 P$ t% m# U  o: }: ~1 Y' B]
* ~- f! H2 [& V, ^let j 09 t. s0 h& Q5 U, W/ W4 R; B# w4 T
let note 0
3 c: X$ D$ ^' f* a. _while[ j < people]
- a4 |& ^2 t1 C; N* i[
. W4 [! h) o3 d) p8 Q; w2 a# `if( length (item i
8 @3 i* H( r" n+ @( ^' F( j* d[trade-record-all] of customer) > 3 )
7 P  k1 b9 M$ D' E# K
[
0 ]" E3 C' d1 `9 xifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)3 l# S; e3 }! O
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
7 F4 k+ G2 m6 n! C% {[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
' M% i/ ^( D4 @) b; r' A6 ~]
- U$ `2 L& f: X" ?' k]* [/ p7 b2 }1 B, b- f+ u# `
set global-proportion note" t8 }' T  ?# h3 Z) m' N
]4 Q& ^: p" y  t0 S+ J' x
end' u5 F" ~( h4 Y! Z# o* P9 y
. H- z. _8 F) J* F+ a* R2 D
to do-trade# d. M- u9 T6 K. j2 s
;;
这个过程实际上是给双方作出评价的过程) E& k" ~( \8 ?
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价+ l* |: n9 w, j- a! B
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
" h4 m4 n* b$ v5 n8 iset trade-record-current lput(timer) trade-record-current3 q5 @8 P0 g' i) X3 e
;;
评价时间
5 `& Y, f& N' S2 |) T3 m. z$ Bask myself [
1 }" M# V: W( q* x' Lupdate-local-reputation
  t/ r# t% }) q# b" Tset trade-record-current lput([local-reputation] of myself) trade-record-current3 B6 ~+ E8 L% D; C  t, \* C3 d
], I1 ?$ R2 {6 O
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself" j1 j( |* y5 z& `) s1 K
;;
将此次交易的记录加入到trade-record-one1 r! M9 @& `$ X# c# }9 f
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)$ s- Y, B1 k. Y/ F- c' x
let note (item 2 trade-record-current )
+ R; E. _5 o$ w/ ]set trade-record-current) W( H0 M! K0 J! ?  ~# |
(replace-item 2 trade-record-current (item 3 trade-record-current))

% r% ]1 Z/ v) q' [' H+ H% iset trade-record-current
$ t2 ^8 T  v% A1 R+ s+ |- P2 {(replace-item 3 trade-record-current note)
: i" n7 ]: i- T, j% c0 ?: T
0 {0 @; W- W4 m& c% `

, Y( Z$ v! R1 E: \ask customer [
) i! V4 S, z  Aupdate-local-reputation
6 G  O4 e: Y* L) H2 C1 Nset trade-record-current
0 y& Q9 C: I. i! C* k7 `(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
: h" @4 j3 @5 E0 u* ~, C) ]/ f
]
: t# e" x0 O1 [$ D5 P5 S$ P
8 `1 K1 a- i" E2 g7 y! }
! M) ~, X8 p4 h0 r+ q8 u
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
8 [8 ^& @; \0 }* U3 h  p
5 P1 M: R: i  n, K! D0 `5 L( ]
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))! F9 ]" e2 D6 }! d2 r) {2 y6 b; b7 q
;;
将此次交易的记录加入到customertrade-record-all
- n: i% ]- Q/ N  R  Aend
3 j/ l# R% m# s  }7 v# {/ v6 [: S% y
. o0 r- P# u. m" z2 x' r0 q& x/ hto update-local-reputation0 h1 Q3 l- m2 g% G+ q+ @/ D
set [trade-record-one-len] of myself length [trade-record-one] of myself
" f8 i$ h; z) c6 a5 x
! x# q/ G1 o% y) I3 F
, ]2 ?1 s. _( B& g;;if [trade-record-one-len] of myself > 3
: l) {! n5 F& [+ z& f, o, b9 ?
update-neighbor-total: J1 o& P4 c, C6 W5 p
;;
更新邻居节点的数目,在此进行
, P& ]* {. V, p$ r- C: E9 wlet i 38 O; V+ B8 D  e
let sum-time 0
) N0 m' B1 ]/ N4 n' H- b; w; vwhile[i < [trade-record-one-len] of myself]6 n; m; K! ~9 e1 w4 ]
[# W8 t* T& n, g0 C% l" b# w* \
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ), i: r) A! j& A0 _, f
set i5 r- e! B# r# s) Z: h4 v% {
( i + 1)

' P9 q, Q+ b. O9 r: K" U& b; Z]
! h9 e, X& Z6 c+ e8 ylet j 3( _4 k+ N- A5 p
let sum-money 0; J* E7 G9 b, K, h* r6 |
while[j < [trade-record-one-len] of myself]
; ?& B' U' V  i! P* B, U[) \9 `6 J5 Z( l5 r
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)- \$ @5 c4 Z1 {, L8 X$ l- }
set j
3 M$ |1 ?7 W- j, P- |( j + 1)
9 \3 W! X) p9 ]: _; i2 N8 k
]0 U0 o+ O' C/ `: U. V
let k 3
' ^5 ^8 \2 k4 O3 X! L5 wlet power 0
( Q+ b) D, J5 G: Y1 D# Plet local 0
3 v9 P+ i# f. h3 |( o+ \+ H! Mwhile [k <[trade-record-one-len] of myself]
4 m5 @; g! s0 k, T" f[  C. X7 t5 _5 K* m
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)
) @3 {, a( R9 J$ ?set k (k + 1)
, A* r* ?5 K/ h6 W  @3 V' I]1 m, d3 j  Y( ]
set [local-reputation] of myself (local)
' v: H0 D. a8 S) Q/ Yend
; h9 y3 H7 E1 n2 q
: j, w! f- o3 X! O! ato update-neighbor-total
5 W- R) V9 @* o6 J, s  K1 P8 l9 @7 [/ u
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
+ p& q. r2 E6 x1 A3 ]5 Q
* A  H, ^- N& t: P+ L

& a2 g+ u+ \$ `8 r0 A) Qend  i& y& ]+ P& E# i! u/ y; r3 [% S' d! ?

2 e" g" m5 \6 T6 Y9 Zto update-credibility-ijl
8 u7 k3 t- T# r: k4 \
& ~4 V; b6 ^  k) U; p;;
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。$ R; X- Z, S  S; Z5 Z) R  r  W! ~
let l 0& F" o) ^8 P$ [# y& [/ r
while[ l < people ]7 l0 ~0 j, t3 L% _) @' I
;;
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' s( m# v* ?" c
[
& M" \, v8 a( m' g3 k* N  [! f. |let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
, [0 f, Z) [) J/ r; b; Tif (trade-record-one-j-l-len > 3): q3 @7 S3 m: y
[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' G/ Q( R* R0 c
let i 3; P4 }# B1 x' l$ D- T
let sum-time 0+ v) }! Z2 P4 d7 `/ V6 X0 M
while[i < trade-record-one-len]
- Q4 E/ @: s: s[
8 c8 Y6 B& I9 J) ^set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )& w9 ~; U/ K8 E; ~* o
set i
9 `0 Q- _- F5 K( i + 1)
, g* K( _4 w8 D; B0 b
]% G' Z7 G1 b4 n; w& C: P
let credibility-i-j-l 0
$ W' N5 \! P) a9 f* [  \  c! L;;i
评价(jjl的评价)
+ ?3 K1 ^' a. n, V4 }let j 3' O* S! d+ B; r4 J8 O
let k 4+ U* q5 b0 o: L8 u4 q
while[j < trade-record-one-len]
; _+ N! U  C8 W$ F8 ]' {) r, P1 [[  B0 J* ^" }6 `8 n) s% ?, _
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
! ?( V! r! L6 S( ^2 v# ]$ T) aset 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)
0 M4 b& {3 w  W# _, Zset j
/ D+ I( d4 U+ c# O) J6 P( j + 1)
) D1 L% @3 B2 T) @2 E
]" P1 r: x) ^  ~) V5 _
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 ))
7 O; I- T) r! d' U! Y5 J0 t2 N: ?7 N: J) L
' A" o  n1 p9 [# [# V1 Y" H$ f/ n- `
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
9 U4 G5 ]* H( ^4 A;;
及时更新il的评价质量的评价
, _. ]1 ], n" `& j) R" N( @set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
/ Z" C% ^; H$ `4 ?' vset l (l + 1)" u$ l0 @6 P8 X) W( M: @% T5 s
]
! G+ i# l+ r% m6 ?" F( A/ Aend
$ c7 B1 r4 K( k+ n; F; g1 T' w
# k. I: K: t4 F' |# Q1 H$ Z' m- Fto update-credibility-list
: L, h, ~+ W& g4 [( {; z! Ylet i 0
% B' @+ v9 Q  C6 m2 hwhile[i < people]
( W$ |% }2 n1 b4 U0 O[# V$ V$ _/ j6 I' ~; B0 Z4 k
let j 0
% p+ B7 A1 |/ ~7 z$ elet note 0
3 O( c+ o; s4 @4 c% V! \let k 0( j. B  O7 b: ^4 _5 J* w
;;
计作出过评价的邻居节点的数目. K- W6 f  U2 v7 M
while[j < people]
! b' K6 s; C0 ~/ C  U! L4 U[2 ~' I  {6 k1 _
if (item j( [credibility] of turtle (i + 1)) != -1)
1 M1 ~+ _) V. M1 r% t;;
判断是否给本turtle的评价质量做出过评价的节点, O2 U2 q# X# `5 {9 y' B5 {* d, {4 ^( n
[set note (note + item j ([credibility]of turtle (i + 1)))
7 y9 z6 [2 v6 f5 T& s5 U$ |;;*(exp (-(people - 2)))/(people - 2))]
/ ?0 H$ y! l6 j# v( @1 a" e! p
set k (k + 1)
" D" t7 d) z0 a+ I% ^]: n: V0 f& P8 d, a7 o* \
set j (j + 1)
! _& O: ~1 `2 Z  q]
: v- i6 e2 j6 C) x5 b" tset note (note *(exp (- (1 / k)))/ k)4 S5 E$ J  t# ~5 q
set credibility-list (replace-item i credibility-list note)' c; _) k! z& j' c
set i (i + 1)
  n2 u* `. B. l+ u]
) j4 O& H4 m6 G7 ]7 v' i. k1 Eend
. D, {: j% q* L+ R) A) Y/ j2 Z) K
. C; j* k7 ]: m5 H8 ~  t: j$ z" @% xto update-global-reputation-list- C$ G+ ?4 Y4 y3 k' q
let j 0( {7 y2 R$ \7 e" k/ Y- D
while[j < people]
3 n. ~7 \8 J9 j! x, W[
. `# ?5 ?$ D: O+ \0 D: j# l4 i) ?9 nlet new 0* d! F, x9 x+ `% @
;;
暂存新的一个全局声誉, o1 L3 ~0 y2 x. E0 ^! t' n- s
let i 0) k" m  d% f3 }  }
let sum-money 0+ s$ p2 R2 ~6 T. [2 k7 m
let credibility-money 0
. H% r! f) G8 e6 o' y2 ?8 c2 lwhile [i < people]
$ O& ^$ V! J' G; j; ^) E[0 }" F* M7 U, I5 k8 w0 B0 m# r
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
( w/ o/ X0 j- yset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))# q/ i& L8 i( F9 O
set i (i + 1)
0 M% N( J7 e- v0 i]- b: A/ H  Q9 p- ^6 i
let k 0) x% T+ C; S+ ]0 B$ {$ w
let new1 0
- d  ?+ T( I( M: O( i- ~3 Iwhile [k < people]
) T  b* W1 E2 n( @$ x' y) u- p[
* t( T- S* l6 i( D  jset 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)) w5 b  n# F3 d& Z
set k (k + 1)
! }, B) x, @0 {6 O6 n' `7 U]1 |5 s; {5 e# k4 w( D
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 7 j! K/ c: I6 Q- N! E3 E  o/ E% q
set global-reputation-list (replace-item j global-reputation-list new)6 z: K+ k" s/ r" F' @  P
set j (j + 1)9 T/ J* E) M$ e5 ?, q3 j& K
]
/ o9 a* \) L& |: S. `# e  Nend
1 `! X& C% V/ H  o0 n# q4 N+ e2 R* @
0 G$ b% K1 u6 L# n2 O7 W6 L! |$ k4 A# q6 b9 e& U
: f% l9 P- V) ?6 G7 I( k  x
to get-color
6 g  y% ]9 `+ E3 @" L' v- s" R$ w; v7 a& n9 H
set color blue
7 E: _; j0 n4 t1 W+ r
end: E" H& ]: d) A9 k8 w

& @; t1 z) V( ~- E+ }+ c0 bto poll-class$ Y, a0 y3 l" O% G; A
end2 Y" A) L2 @$ K1 R
/ A( \) r0 I0 l7 I* o8 q
to setup-plot1
9 ^8 p& N8 ^3 r
5 e- ]% [$ @6 U2 p  Zset-current-plot "Trends-of-Local-reputation"
% M% T- _! ^7 b4 k5 \" P# q

* i5 f7 T3 R4 d5 {4 P! M2 d' |set-plot-x-range 0 xmax
' ]& l4 i& b# Q& x" ~& Q
4 B! ^6 j8 M9 R, M) z0 \
set-plot-y-range 0.0 ymax
* h. [) ]) @+ w7 [
end# j9 k- N0 x5 i6 C; M
9 Y/ u0 u& j  W7 t4 v8 t& f2 ~7 q
to setup-plot2: T2 F: M3 b2 s6 o' g: C1 w6 r% B
; E- R" E2 ~' T$ e: u0 t& g5 _
set-current-plot "Trends-of-global-reputation"

$ H  t: _2 A% l2 P5 I( m# J1 ]: b, I0 W+ f1 v- C6 y
set-plot-x-range 0 xmax

8 w5 U- I) _) E/ p6 N0 M' T: a+ v
set-plot-y-range 0.0 ymax

6 X$ s- S1 W: R. P0 e! rend! v( v( x8 b  x! x  ~& u0 w
% @. B- V& |0 p, u2 t/ n- K5 ]
to setup-plot3
% y; T8 Z) ^1 D3 z6 Y  }
* `% z+ q9 a& ~3 oset-current-plot "Trends-of-credibility"
: _) }% K& i- r; i9 D: R9 c$ f
! q; z1 G5 y2 [6 U. o
set-plot-x-range 0 xmax
, y6 M# I; [! C/ s# Z# u
- \# j7 M, M& b- t6 Q8 s# Y* F& q
set-plot-y-range 0.0 ymax
- _! q) v6 }9 }5 f, [+ U4 T, P4 N
end
6 o6 Z2 g: |1 r$ }0 I9 H8 }$ M6 g3 F+ m! l6 C% G
to do-plots
4 I: M- c) f# {/ Y9 ^' [, p7 b7 dset-current-plot "Trends-of-Local-reputation"& ~7 N( E, l% D2 l; p0 F
set-current-plot-pen "Honest service"
8 }# |  C# p7 S2 kend
1 t- s+ F* ~7 j: d
0 G& Z5 P3 W. B6 N[ 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.: e4 [# t, o; S9 \. ^0 j

5 J" Q% g- J3 j; o0 p  u0 j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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