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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:& `6 @: |! ~2 v2 f; j) S
to do-business
& c9 k- g/ w3 Z) z! T8 ~9 ? rt random 360) }, p# R0 F3 F: |. l
fd 1
" `  _3 H$ r) O, w; s) t& N ifelse(other turtles-here != nobody)[
& P3 p# `  c/ i( U* M; @   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.
* u: E' o# W$ J, b& z" R   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    * V6 `- Z1 i+ E! q
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer4 \  b# A+ g# _0 w
   set [trade-record-one-len] of self length [trade-record-one] of self
4 k* n! j' U2 X, A: B# k   set trade-record-current( list (timer) (random money-upper-limit))
7 A3 c* e, N3 S% I( c/ e, m) ~, r1 H/ |- ~$ U, c9 v
问题的提示如下:! v& ~6 j& x; P9 r4 t
3 c1 ?3 N1 Z, J8 l. h2 f
error while turtle 50 running OF in procedure DO-BUSINESS
- s, r8 T/ E+ m, j  y/ g% s; j  q  called by procedure GO4 V2 [9 O/ ]. a0 c$ T1 M; M: E- H$ k
OF expected input to be a turtle agentset or turtle but got NOBODY instead.' y* Y5 Y& _  E
(halted running of go). ^5 u+ R6 G" q/ u0 J1 D
: j, t0 b) B8 E- z% B4 h# H) |' 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~~
4 Q- A) e5 w- W: C% e3 t% m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4 z2 b" g) Q8 Z2 I9 \/ ~' Q1 @
globals[$ v' d& D8 \2 @- f
xmax5 y' l- P- K8 u; r! P
ymax
1 Q  n! F+ D8 w" a+ R) j! qglobal-reputation-list
( M; x3 A6 `) U) N$ S4 b: B3 m% D1 j$ j: ~8 v& |
;;
每一个turtle的全局声誉都存在此LIST3 J. f. o+ {4 G8 j9 x
credibility-list
3 |. H  t% b3 g: _;;
每一个turtle的评价可信度
6 F1 Q5 O' ~+ ~+ U5 ~/ n4 U0 ?honest-service
- q- K3 w9 D! i& f, @4 Lunhonest-service
! S3 R+ ]# l7 P$ g. E9 voscillation8 z; I: K2 B* U. _6 l& V2 k
rand-dynamic1 W* m" o. y2 i+ ^% j
]
5 i& d0 C0 r+ Q7 ~* f
" `9 v6 e' S( z( [( c* ~1 ~turtles-own[
2 P% ^1 G4 e- U" {; q7 d) A3 }trade-record-all
& h9 t& S/ p" P: [! L$ i;;a list of lists,
trade-record-one组成
, [' n. }, h. O1 J9 B9 v: V! dtrade-record-one
8 x2 Q) @: {, U" X- P3 d7 R7 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
4 x9 y0 t8 J; U$ _4 \$ a" l% P6 r1 S$ t1 O/ Q/ m2 V0 g( [$ d. W& @
;;[
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]]; c: s/ H* W8 t. b: h
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]
, ~4 S7 c& P0 Z( U" t. A; Vcredibility-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 S- q& u( ]+ T* L5 @& ?3 Nneighbor-total
& A( H  z! L/ K$ w/ n;;
记录该turtle的邻居节点的数目
" W0 X* g# Y  ]6 V! {" ^6 x) f5 \trade-time
+ r6 f4 x/ r) e* f; N;;
当前发生交易的turtle的交易时间
' y0 b1 _# l4 P' gappraise-give4 j" P1 n% ]- a2 N9 S5 s
;;
当前发生交易时给出的评价( j' Y' A  E! B+ [
appraise-receive* B3 ^0 R" C* _5 w4 ]! d+ {
;;
当前发生交易时收到的评价
' R! o* {% r5 C" w/ {2 F3 L9 cappraise-time
- P0 Q  ~: u% j+ l7 }% i;;
当前发生交易时的评价时间) h( r$ ^; C% s. A1 L
local-reputation-now;;此次交易后相对于对方turtle的局部声誉% q% _+ N! P. Q2 L3 o
trade-times-total
1 m3 f' u: K/ s) h! D;;
与当前turtle的交易总次数9 D; z/ N: e& h
trade-money-total; U$ h9 A( }2 Y9 R* N# y! `& H7 Z
;;
与当前turtle的交易总金额& L/ ~/ f/ n2 r, D) L  [+ h
local-reputation8 G, C9 e: ~. _5 A
global-reputation& W- [- A/ D* c6 x, S; R- d8 f1 U
credibility3 p3 N5 `# `& Y! c
;;
评价可信度,每次交易后都需要更新9 P0 M6 A. h: F$ A0 a+ `
credibility-all+ f+ U! x. n5 M: }# `
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据
. u* R, l% B% |* L& J  B  ?
9 {" `( f& ~8 e) @$ A;;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
$ [2 H  b$ _8 P" Tcredibility-one* K; l5 e; w) \
;;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
8 I0 p4 O6 x, ]: z6 y. N5 n7 dglobal-proportion
3 _8 R! g/ z( j- Mcustomer
* h' J/ P5 ?1 u, Scustomer-no
  d" D3 g1 z- f. Y  b( H; F' `trust-ok- ^% G  c0 F+ L% b3 ?) C  o3 o
trade-record-one-len;;trade-record-one的长度
" V5 W+ c3 H0 _. ], g]
4 i6 f# a% f2 [& a, E
( _( K- G; u5 Q( H' Z;;setup procedure
7 j* a) o3 u! g; R, [4 w1 D( _& t7 |- w6 `$ Z5 Y
to setup6 J4 `1 l! j9 w- w
" P( N; `5 l* S  j8 r% J' r9 x6 v
ca

; _7 ^; _% T* v8 ]: H: p* c; X2 t7 O* H7 |1 g
initialize-settings

+ ^& o8 d$ Y# M6 X: T" g6 y
+ j5 O8 U: S/ M; m1 P- ocrt people [setup-turtles]

5 |! S) p- H! C: f. D, O$ J9 R0 b# ?* X  ~2 u# k" z
reset-timer

; }. W/ [1 t, c4 s# h, P4 I8 H" s* a! o, q
poll-class

% A6 [! V; V8 Y5 j: h/ Y0 F3 `# D6 b0 s5 B
setup-plots
* O3 x( X: ^4 j( Z  i. d5 a, E
8 ?3 Z4 J& \8 L1 T3 N5 [2 J
do-plots
; _  G- N, R: x+ T# w7 H& g. _0 G, z
end' y0 L0 p! _" q5 V

; q: t* a+ @! C* p! Q: |1 k, Eto initialize-settings. x1 g4 Q# a+ d

( G" _3 Z# l* k! Y+ [& kset global-reputation-list []
2 x, I( ^5 |3 d
* Y( j1 w4 o" s- a6 n
set credibility-list n-values people [0.5]

% k0 K" I' i4 Q1 n5 d
# F; H* X7 `% z  g6 v% `set honest-service 0
  q- _7 N& ]) @' H! b

2 T' U% d  F2 U9 n4 ~set unhonest-service 0
3 @/ ^* R( c' o  m+ D3 \
4 c% q5 F; P0 D$ A5 `2 E
set oscillation 0
# ]' D: v3 L7 O) P, a
! x; V5 E( q# E- Y9 C
set rand-dynamic 0
, x  Y' D2 a# P
end4 @0 Y: s2 [9 n+ d1 e
' d# C3 o. P) I2 j0 A9 O* H1 E
to setup-turtles
9 C( g+ Z$ n7 Qset shape "person"
+ P* r& u& K& ]. @; b% P" j' fsetxy random-xcor random-ycor5 J2 J  Q7 \; u  p
set trade-record-one []
8 b% e6 z! O7 z: m3 t7 Q

5 w" z8 u9 y6 s% Rset trade-record-all n-values people [(list (? + 1) 0 0)]
0 ?- y$ ~5 g" i" i2 l1 s

5 L  |4 ~' m6 D& Hset trade-record-current []
" L# V7 V3 L3 V9 I$ r: Fset credibility-receive []
) y& b4 V7 I3 p1 W6 J  ]set local-reputation 0.5
3 Y7 q( ]. Q) {% N) Dset neighbor-total 0
# I5 N$ I# @/ w$ ?8 }# W1 b' q% }set trade-times-total 0  y3 e6 i" H+ R0 [5 r+ M, @5 b
set trade-money-total 0
% Z' y2 K  B/ l3 _! r: _set customer nobody
. O4 z1 ~# R6 ~8 x* K  ]4 mset credibility-all n-values people [creat-credibility]9 I  A; F  d' O: y5 X5 N) E0 ^5 i
set credibility n-values people [-1]
2 D$ I$ g: J, G( ^& Bget-color  ]3 Y2 a& g( [$ r$ W# n8 y! y# d
; K& F& i, b. B" V. z# s
end
6 Z% t& b" l# Y- e7 E3 {$ I4 n! ?! P* P) s$ h  B7 i5 T
to-report creat-credibility
# h* X" p) a0 l; L4 w5 Ireport n-values people [0.5]3 g8 O% Y8 j  G' W: K7 {, K8 P
end
0 Q4 R% D5 A; p# x
( ~2 O6 f9 {! ]: ^6 Qto setup-plots
2 k$ K4 E: Z( u7 x2 m( {" y4 Y! K5 x
set xmax 30

5 X- c& D! s1 U# C* n
7 L1 p& A4 J* U% _& [' _, Uset ymax 1.0
: g! l; C. n1 C
6 E. f3 o( q* ^9 T
clear-all-plots
9 S2 q! ~' l1 l# _" q0 g# ^4 T
3 O# k/ J- R  ~! y4 E* q% T
setup-plot1

5 J5 S$ ?  P; k' V* h2 p' Q; ?* N, Y  c- B& P/ t
setup-plot2

1 v" d$ M0 c2 u
4 n2 z! h9 C  D# h& [1 F: `' Y( a7 ?setup-plot3
+ N4 c2 V8 c6 C7 ?
end
4 G  k8 o5 F) k$ h' S- k9 C; h9 ]& `& X1 k
;;run time procedures
* l. F" x& G" \$ b% T7 r2 F; U$ B; |1 G- @# |  i
to go
# V* A6 ^7 P0 @1 E6 U% `2 W  e: B
ask turtles [do-business]

7 }. A* N& l3 b+ Q# zend
0 M1 Y! h5 m) A$ b0 M! l* G9 @' X1 u3 o) A) ]1 ~
to do-business
) U% _4 G1 O8 p

1 T1 v3 \( w" }6 W' O! G3 t$ r
7 q3 S2 ~( X( }- E- B6 brt random 360

  Q3 `, u7 m$ q  {3 ?8 w6 W; _8 ~: z* y
fd 1

$ S( I& J( |' ^9 C6 o) D! H: e2 `' a; I. u0 P
ifelse(other turtles-here != nobody)[

0 z. {2 r7 [. u3 B8 P
% P# J2 j& U+ P5 kset customer one-of other turtles-here

: k) U/ `1 m4 H3 `
: {  r( H; M  Q, J+ C. r  C' z;; set [customer] of customer myself

) s# X1 E- J- E% Z$ C5 h% j! I" n0 n- f4 n
set [trade-record-one] of self item (([who] of customer) - 1)7 l: \: I2 s+ S! [1 o
[trade-record-all]of self
0 a- R. @5 p) Y5 o& V/ K;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

  h( l1 t$ r( z1 u; P2 i, c! c: B) d7 l- H8 N, u: [# Q4 v/ Q  v
set [trade-record-one] of customer item (([who] of self) - 1)
( F! K1 B" ^; _" G1 _[trade-record-all]of customer

1 I) L& G( [8 @) s" i- ]! H. D" \6 H) n, ~- C
set [trade-record-one-len] of self length [trade-record-one] of self

  |& w( E& t  j- n
  q# O  h) D$ K/ U, [( k: b5 R7 gset trade-record-current( list (timer) (random money-upper-limit))
: p$ F+ I  R0 Q1 h
3 t2 m8 V, \' ]1 m6 @. V
ask self [do-trust]
6 X8 h- @& V+ J% c4 r# i2 |;;
先求ij的信任度6 h/ U' |0 p( v3 w8 J0 {8 o

4 V% `# @, s# ~1 |if ([trust-ok] of self)
" }" s4 k# ], _9 };;
根据ij的信任度来决定是否与j进行交易[
2 w( e$ B& O) c* i0 r# q" W; Pask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
2 K- }- D0 l# q0 R% X" p7 [- U+ [7 I( k! [3 `% s  e9 c8 u) ]6 V' g8 `
[
5 G1 ^) Y  Q& S) v" {

( r% F. i7 ~  L% d, c! x$ Zdo-trade

& Q) f. d0 P4 m0 u6 E9 X4 u, }+ P+ u1 b
update-credibility-ijl

5 M, `! M( c( V1 i! }9 q  ^8 Z1 g" N( O
update-credibility-list' {; `' I& [5 z0 u, l: K" p

0 }. X0 y: t7 A1 e( l
6 i6 A; `" h4 ]0 J/ `1 \7 Kupdate-global-reputation-list
* ^, r& ]& X; t- L

& F( S1 ~3 v  c" D# @9 `5 z, cpoll-class

$ r) e( v/ B5 [& Z/ ]& [% [# X# ]; ?, v
get-color
2 K. Y, O# m/ H/ S

( H+ x$ S; W. B# G: z9 P; I]]
; E" b! L: J) s" M7 u$ C
7 o- h- Z: M# `/ K;;
如果所得的信任度满足条件,则进行交易
) P+ u( N  U/ Q. K! s% ^1 o/ c8 ]4 L% O
[
& ]; l" x' i" j/ c& W. I
# q1 o! f: I1 U# i
rt random 360
" L2 x1 x1 _' I& |2 N

( m6 h# ~& e8 o0 ffd 1

8 P) i& J' M6 a: i7 v% D/ v, E! }! s8 Q; m3 W9 E8 o
]
! T' p4 D7 G% G! A9 N
; i7 f5 D1 a7 t+ E+ V
end
8 N% L8 N1 @; g$ Q, f- V' w

& Y% w" `8 C% S  W9 E: mto do-trust
/ }, f! K6 [6 E. E& `' Tset trust-ok False
& I7 G3 O/ Y6 V9 c/ ]+ @$ e
1 H( k$ A2 V7 }* r" r
6 G4 R$ J3 i! u( i9 P$ \2 Z. B
let max-trade-times 0
6 R( m; @  I& U6 R  gforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]& X! E# v, U) h! l, o5 E
let max-trade-money 0
+ f) ~% |+ d+ _# H( vforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]3 e, V8 c4 a$ }3 E7 k; I' b" N
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 X) P# ^' l9 |. O6 K4 r. D, }7 B
8 B$ P1 S  K% R
' f! K5 W$ |5 q' w& M% {
get-global-proportion
) W0 F1 U" l+ Wlet trust-value+ D( J: O/ p: ^+ o4 ^
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)

& d" O1 Y9 l. qif(trust-value > trade-trust-value)
# l$ C6 z3 K; J. @9 v5 @[set trust-ok true]
" N# z+ _8 O; G0 O3 X/ P- Q4 O8 rend
+ k. p& d" }8 Q) Z0 z+ J9 @
5 g, Q3 J: ^9 Lto get-global-proportion
$ F" o* y4 A9 B0 [$ e/ yifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
2 I1 e2 J) W, D: B) @[set global-proportion 0]
( j; q  ?( h8 r" Q7 _5 J+ w[let i 0
8 q/ c# ?+ [& N8 plet sum-money 03 H) h+ Q# C) y8 N4 q6 K
while[ i < people]! s1 v# c: r0 i4 T
[" O7 b) n- O9 y9 p: A
if( length (item i, o& ^3 J- y+ z+ ]9 e# E9 s
[trade-record-all] of customer) > 3 )
- C3 |( ]" i$ f/ f: t4 J6 A
[
8 c) Y. Y# W( b6 _, m6 aset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
0 X5 Q4 K6 ~% N9 l+ x]
8 S! X8 |! _+ `8 \]
  D6 B- u$ J' Z4 Q0 ulet j 0
, w. m1 G5 I% {. Zlet note 0
* i8 D2 \" h/ c) H2 H3 ?- u, E6 Qwhile[ j < people]
5 C; m  i7 ^4 k+ [+ o' A[
6 n+ e: m- N3 o, Lif( length (item i
: r+ K: P1 H. C' O) V+ I( @  g$ a- U[trade-record-all] of customer) > 3 )

3 Z& H& j- c+ K[$ q  y/ n% N, i
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
4 `  T4 j6 Y: G+ e8 ^, M- X' y9 B[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
& [3 e- ^, V# E[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
  O2 M; V" x1 U9 U0 w. n4 ~]
5 w  v) o3 w: B; @( x/ n3 v) I. l]5 R+ l! A% Q( A
set global-proportion note
9 b  |$ G/ e( y8 @. _]
! Q4 w/ w, H; l* Rend
+ F# o6 F& H4 P: v8 {  Y9 W9 x
  [  B; y" X$ b1 i8 t* {) N( D+ Fto do-trade$ _% [; O3 B; e6 R
;;
这个过程实际上是给双方作出评价的过程
# y  ?6 |# E( I. [1 J* wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
! }1 M& _( _) {( y( [set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
- h) v2 C% z# N; s0 Q# Kset trade-record-current lput(timer) trade-record-current
& X7 i# |- I: b% ]. \  o$ a3 `- [;;
评价时间7 e" i+ l+ F( `% i  T9 B
ask myself [- V) L  k  x# g# T
update-local-reputation
4 G* L, h7 F" M8 o% B# z; d, xset trade-record-current lput([local-reputation] of myself) trade-record-current
8 P0 ~* v9 j# U7 F6 [; n( K9 {]
' E4 D+ z9 Y8 h$ bset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
  @) X1 T& ^, V3 }9 E;;
将此次交易的记录加入到trade-record-one
" ?% o: d% t8 v. I: Zset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
$ L% H9 E# \! j8 M$ ~3 plet note (item 2 trade-record-current )  h  B3 M: Y% a, p; I' `5 _
set trade-record-current
7 }. x1 K6 l3 R( G: J+ m  V(replace-item 2 trade-record-current (item 3 trade-record-current))
" j, G) Q! I0 P2 W2 U
set trade-record-current
8 |$ j5 M; `$ }0 ^" U(replace-item 3 trade-record-current note)
: \9 V& K, P! u
  V' R* O4 ~& ]' f

0 j) ]5 ]; s0 W! }4 D* Wask customer [4 z0 |$ n! g. h; a) C- k6 `6 ]' j
update-local-reputation
: _. z5 N5 }# p( u+ P; bset trade-record-current
) l, h/ n& ~: m- {(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
* I+ ~0 |; n0 e- m+ w6 A' [. d
]9 w8 H% X8 j/ C$ {

0 R& m( W' J! E! w8 X) T9 d! w
( u; p5 M' k$ o6 N9 u
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer1 i: O" X% u9 T7 i

' `0 c6 e; T( A5 p/ `! sset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))) Y" T# ]% ?# s  t1 j0 B
;;
将此次交易的记录加入到customertrade-record-all" J; `% i& b! v) }
end# Y0 v# Q; U6 [( k

2 E6 n+ D5 t- Z4 ~to update-local-reputation
5 F$ H: A2 A: h2 V& \set [trade-record-one-len] of myself length [trade-record-one] of myself0 P3 N3 O0 ^; L" o+ X, W

& N2 ?4 \) x* i$ V, Z+ q3 a6 V, a+ y: `" f, x
;;if [trade-record-one-len] of myself > 3

0 q# Z6 A/ L7 e& oupdate-neighbor-total
) b2 f2 B$ \  b3 z, X' c;;
更新邻居节点的数目,在此进行
( V: o: d# z1 M1 l! ~) p+ Glet i 3! E: q5 ^% l$ ~& }/ l
let sum-time 0
; Z/ f, i, G& E1 n8 @while[i < [trade-record-one-len] of myself]
9 h0 ]+ W/ f7 [% k; T[
- Y# k  e& m. Y0 q' pset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
6 f7 j4 T0 b; l, p' o$ ^/ t: Iset i
& W: v+ M( n2 _8 x% |0 d/ y( i + 1)

2 N4 z# Z( V( g$ a]
: Z. j1 I5 f8 _0 q1 D; mlet j 3: A- {, R3 U1 e0 f8 G. J- B
let sum-money 0
# y0 q+ b  l% x9 ~# F1 \while[j < [trade-record-one-len] of myself]
  U7 Z$ Y' j+ i4 w" N: f9 F5 b; @[
  X2 R* ]) K6 H, `, b5 F7 Xset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)  d" o& r' B; l3 ?8 f
set j
7 |# J5 C- Z( r; h( j + 1)
4 q) m  D8 t3 I/ Z* S* r& r
]
& q0 N- z  q- H+ `9 ^+ Rlet k 3
, f4 ]8 |9 O  S# \& ulet power 0% Y. d3 h/ g9 P) W* P# q3 ~" q: Z
let local 0
, S( @7 Q+ P; j4 N% x/ j; r9 pwhile [k <[trade-record-one-len] of myself]
  c/ a. l; U* Y- H- E. F, ?[* Z3 q' Z) {# |' L8 L" O
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 C% @0 A& ^% c: f! x! H* o/ L  @  Bset k (k + 1)
1 e# b  q) Q8 l1 p]( v3 r! l- U4 V4 y2 O% J) k
set [local-reputation] of myself (local)
2 P0 ~; J: `" |' Q4 `' L1 B! U1 v# kend
0 ~8 r2 w- y' E  W. i& B( {; s4 \. h! V6 F, B2 T
to update-neighbor-total
6 C, g% B- I/ Z5 ^) O( d
# R; a( v6 k9 w' W) }$ m) ~) ^if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
# f5 t8 L2 P- w" n7 u4 q
& u' A0 A( H+ Q/ ]
! g. o: @. e' i* [
end
1 r- W8 ~! }9 `- y0 s& ?
4 u4 i+ }, P9 l$ Fto update-credibility-ijl
5 O5 ?8 ~( _! h" S8 Z
& l( p* ?( y# i3 V8 G- ];;
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。
& ?& f+ U  F% ?& P/ I7 T1 klet l 0% a% N4 a% b2 S( X7 v
while[ l < people ]
- e4 m0 W* K+ K3 q; e9 t9 S3 \;;
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6 v3 e: f1 R( d) L( f  l3 N8 x
[0 C/ j, y. G: b/ H
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
8 U; b6 y/ H! A' s( z( C9 O" ]if (trade-record-one-j-l-len > 3)
; E+ r; I2 m2 O[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, D3 Q$ Y+ p4 P& Z1 U! N
let i 3
" n3 a% `5 b( Z2 M2 @  l3 c, Slet sum-time 0" M5 e/ R; E# ?( s% ^. K+ _8 \
while[i < trade-record-one-len]
6 |2 a( I2 l, X[' d3 f9 N4 l+ l* J' G7 h" g" k  C9 a
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
. _3 x/ ?: o5 _( X5 }set i
& Y: W9 D  l+ {, _7 |( i + 1)

8 X: `* c' Y# {1 _) A8 N]
! r! U- D5 ~& J2 b$ V; Hlet credibility-i-j-l 0
+ Z0 }/ D# z* K% r' x$ ^# `6 q" t;;i
评价(jjl的评价)1 S4 `, q) a: D5 V  |5 j
let j 39 r. U/ V4 p( L2 L
let k 4
( |# @- h. ]8 e+ m  Mwhile[j < trade-record-one-len]8 b+ a& N( Q# f+ k  l0 z
[* i* |5 r/ u) [* m/ ^
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$ i$ G0 W) ]8 x1 S
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)
; b' N) {) X% f! X9 ^7 jset j! l# {9 H) |+ A7 \7 a( t- j, o
( j + 1)

: x9 `7 w; ?* @, {" m]0 I; r0 \" |( R0 B
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 ))
! x2 t/ V1 |) W$ x2 [3 `: X
0 y% l( G, x# L; m
( e) \7 x* c1 L% N6 }! ?
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
. H8 O7 E3 P9 @7 t/ U. r;;
及时更新il的评价质量的评价, W1 m  a7 r2 K. d; i) U
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
  g4 |( g2 a2 G2 C3 a% c2 ^  sset l (l + 1)0 n$ v( e; q  r; }; M' b; A7 o
]
- i# ?" `* w9 D7 S8 M5 Vend
8 P: E" k3 x0 R, ^! D9 K
6 U- G, ~, t+ q) w) _, Ato update-credibility-list; \  U% o7 R8 |; d4 b+ ?
let i 0  S0 X1 e6 N) c: S/ N8 x$ y
while[i < people]
8 a. M3 X# F; f. g7 j2 R[
" s. X; Z! f( Z, I0 Alet j 0
# J  S; v+ {  I! r) l" Wlet note 0
; C% M, _" R, B) ?. H" d  ylet k 08 h' y0 o5 W( k/ c) D1 ?' g/ v
;;
计作出过评价的邻居节点的数目
; E8 H+ R( D" I) Gwhile[j < people]
& _% h' k& D9 Q9 N+ G1 a[
! s1 c  h4 C" ]; z0 p1 R- F4 Kif (item j( [credibility] of turtle (i + 1)) != -1)
* ~: s6 l0 a  }3 U;;
判断是否给本turtle的评价质量做出过评价的节点+ W; F  I; R- z2 M5 v* V
[set note (note + item j ([credibility]of turtle (i + 1)))
* n3 U3 @3 a* K* ^" b  V;;*(exp (-(people - 2)))/(people - 2))]
7 v1 p7 @: s% \0 ?( n
set k (k + 1)
3 _2 i5 P6 H* Z5 ?5 W- H2 `) r6 P6 U]
8 X" j, b$ ~) l2 \/ kset j (j + 1)
' V1 X( P, R* ~- z8 B0 u4 P]/ b+ o3 ]( X% V) s- ^
set note (note *(exp (- (1 / k)))/ k)- N: [1 W7 O2 L7 D. O
set credibility-list (replace-item i credibility-list note)
, x9 b3 b- |$ [1 Cset i (i + 1)
9 c+ l, s* \4 F- {3 J  n- d]' R; B5 p1 @- u5 n" I
end4 R& E% H0 J1 i/ @+ e  l
: B) A' {0 o$ S8 B- ~+ }& U' S% C
to update-global-reputation-list
- R1 W( l2 }& W0 `2 i5 {. ?1 zlet j 0
5 ~9 I* e9 y: i6 R1 ]  Y, pwhile[j < people]
4 w- Z! y$ r7 u1 t4 g9 N: c* Z[
5 i' k0 z, w. C( e0 |, f1 ]let new 0/ y0 r+ S+ h$ J/ t% t
;;
暂存新的一个全局声誉5 A; m( l& s+ M  V/ L4 J
let i 0
$ C, X0 E/ ^4 E% ?# |0 Clet sum-money 0: C6 I* S; _/ v5 Y+ e) U8 c
let credibility-money 0
& y+ F" E8 A& Wwhile [i < people]5 ^" R$ ^1 T: I+ Z5 i
[
& v! I  T3 U9 p2 P: ?set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
! |7 ~7 }" p) m$ D3 Rset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
) ?5 l0 U; _$ {& S% Aset i (i + 1)
$ l9 Y. a$ r+ Y/ P. {7 i  T3 t]0 J, {" x5 A" I+ G, J: x  z0 t
let k 0
- {% D7 U& w+ v% A" s8 i$ e# C) Olet new1 0
( n+ j6 \3 w/ @6 m1 d- Bwhile [k < people]$ \3 N5 `/ h& b) n1 d  |
[+ ]" n: {  q% M2 l# M7 y
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). f) C) }% a4 X( O0 R% Y
set k (k + 1)5 N8 ?" z* q  q. Y: ^. X
]0 v# W5 i2 Z2 _* V1 ~
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 9 u( B% c2 U/ o5 r9 [) v$ S: s$ o
set global-reputation-list (replace-item j global-reputation-list new)
# s! L4 z- m  I' ]set j (j + 1)
4 |& }3 ^. L6 K0 k: X- A$ w]4 Q+ ~- A6 h( P+ s' e: U# v
end2 O5 \( X4 `/ r) Z: ]* [

8 M7 J8 v( N8 }+ G$ G$ E1 w# f7 H2 C: E( g( k# n2 q- u) S: @! N

6 ]# x9 R% B! L3 g/ Gto get-color+ i  Q! {, H4 [7 B

: v. S: x' P( B8 }3 Kset color blue

0 ~) d3 W' r5 j- j7 d* Xend7 r3 T, M1 o7 n/ w$ p, I

' i# M. w% L: E8 V2 f4 N  Eto poll-class
, C- l5 |  D* N, U4 ]8 ~end
6 V2 Q* Y  @$ _* \6 v  ]' K) }; }
to setup-plot17 w4 m2 H5 K/ h

4 ?" e" X9 M! S/ Gset-current-plot "Trends-of-Local-reputation"
8 V% H  G; S" K3 g: X+ A

1 @. j  p- M! B% v, Wset-plot-x-range 0 xmax
! a8 m' T7 q! z, I3 K

. J) K1 l0 `! }( v, B0 ^set-plot-y-range 0.0 ymax
. a+ w2 o. a$ W, v7 n3 K* ~
end
: _* l' Z3 b/ _# \7 S
, e4 ?1 j: P1 yto setup-plot2
3 M; i& S( t: V4 B7 i" ]& M2 X  ~$ c% w- y0 f  w
set-current-plot "Trends-of-global-reputation"
8 T; i, `# E/ {3 P+ }9 J( W
8 V# R& w* v& \8 R
set-plot-x-range 0 xmax
  a# J' [; P$ ^) L/ w  E: S

6 P% J! k4 t+ J" P6 G/ |, Lset-plot-y-range 0.0 ymax
3 t' k9 [; c0 J8 V) s: E0 \
end
- A/ B- a+ Z2 r
: `$ o3 Y1 d" D1 a1 _to setup-plot3, N) z8 L% N* I8 t, p$ g. R

8 a# o& d/ ^. ^/ [set-current-plot "Trends-of-credibility"

$ A! x( v. i0 h. y% v- k6 X; `- j) I8 _  m4 g3 t
set-plot-x-range 0 xmax

$ A% F  ~) i) O+ _: a6 y3 U
- j. A' B, C* l& z1 F/ {set-plot-y-range 0.0 ymax

0 ?  X! c# j1 c3 g" Jend7 _1 D, }7 G' F  e* t( z* R' ]! z
. |9 n1 ^* a: u$ V& ]) G
to do-plots
2 \, n0 I1 z: C3 Aset-current-plot "Trends-of-Local-reputation"
# |1 C! [  }; L8 i0 Qset-current-plot-pen "Honest service"
4 u0 L7 _# C8 cend
& _/ ?( e' c2 E5 o: u  L  M( m$ Q7 K) }4 h, P9 T# p; Z
[ 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.8 z! K/ r+ ]1 o& d6 W! H

, W+ J) ^5 K) [. Y9 o" x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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