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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:( e% ?2 s8 `) z$ r( t1 E# Z' C0 x/ t
to do-business * ?+ C0 e" _$ \# W$ T. S
rt random 360: l) X$ t+ }# Q
fd 16 R( J3 H% e" f  x& m7 Y$ g* c8 M+ f
ifelse(other turtles-here != nobody)[- _( h3 F& J7 g7 G
   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.; d" D' d) N8 `$ I& P! Y
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    1 Q6 p9 G* x; X9 V- B1 D
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer: A  g* v$ W# H4 v: n- E
   set [trade-record-one-len] of self length [trade-record-one] of self
. ?- c4 v( x- i0 @   set trade-record-current( list (timer) (random money-upper-limit)); O, X+ [5 u4 t- @

5 e% |) x0 K% L9 H$ ]+ e# W问题的提示如下:
' k1 f( ~4 e6 ]! L. v2 h
8 A: D8 w, Y7 h+ Derror while turtle 50 running OF in procedure DO-BUSINESS: {% N2 h- q  R0 P. g& N
  called by procedure GO
" Y9 X2 U; S% t. ^1 ]; TOF expected input to be a turtle agentset or turtle but got NOBODY instead.
+ ?; S0 X8 A1 b- l* f' W: N
(halted running of go)
6 A1 J4 E- C, @# n3 b8 ^
7 O/ j- ]9 \8 l3 E7 [" o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~~
/ y' A8 g5 S! A3 J! c; 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) U! S( A8 C- j/ f1 @4 S+ w
globals[1 G+ |0 L+ Z% M3 z
xmax" k% i9 m# ?3 A; m% z* J
ymax
  i: t  a1 ]+ @) cglobal-reputation-list
; b9 ^7 o- U& p+ \! {5 n. q
3 F1 K" B6 c4 p" H& N  w' L;;
每一个turtle的全局声誉都存在此LIST
: Y4 c! ?" @: p5 E' b! g8 {credibility-list
- X$ b1 C6 u7 ^5 L8 |- m: K% U;;
每一个turtle的评价可信度
3 K2 X$ k1 n! E9 G$ U; E* Q7 Qhonest-service8 Z7 a, H) ]+ i0 Q  P
unhonest-service
' X( l; R+ d! Q, `& poscillation
: W% g- r: Y! D$ Mrand-dynamic
2 h# @- L- A. B3 P; q/ J]6 g( s0 ~' x* \( d
0 r* X5 @' ~5 t, l, U) \! r3 O  `
turtles-own[, d8 P) P, w% `% C# P+ ^$ {( t# X
trade-record-all
1 I+ x1 s7 N7 G1 P4 G;;a list of lists,
trade-record-one组成8 f9 o  n: {1 p& ?5 D
trade-record-one9 F; B. A8 B/ m; k! M- U8 v5 e
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
, s7 h! V; J* _& I% D8 [+ w9 f0 b
* x% P5 Q+ M7 Z/ ?/ ~;;[
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]]# t8 h) n1 i2 T$ m. }' W, s( 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]
+ g, p7 B( m! ^% o. T$ `. T; c# Ccredibility-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
0 I* C) Z  s  x! Yneighbor-total
& K7 _+ }  _, U# t  J+ ?  e5 _;;
记录该turtle的邻居节点的数目3 y- J/ j2 {+ ?7 ~, T+ ]' A! B; K' \
trade-time
8 N# |7 s& H$ C. X; \* P;;
当前发生交易的turtle的交易时间6 W/ z! D0 m. q) U5 M  v8 a% ?
appraise-give; v4 w; V+ O( F  o. }
;;
当前发生交易时给出的评价: ?2 O3 o6 H* R8 S; P% Z& t9 a( c
appraise-receive5 L  d( z2 V, R) V; L# d8 `3 l0 f: w
;;
当前发生交易时收到的评价4 l0 V( s- [0 q# g6 P# t. K9 Y
appraise-time
6 p, q3 }5 ?) p, F;;
当前发生交易时的评价时间
* i& c4 E6 n) Jlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉+ ^% ]* v" y# ]. l+ R
trade-times-total
8 A1 I! b7 H6 x9 {;;
与当前turtle的交易总次数9 [+ b- J7 I; j
trade-money-total, Z0 ~4 @% e' E: A% ?, B
;;
与当前turtle的交易总金额
( E4 a0 E, V# g+ `: ^# llocal-reputation
# I5 T' r0 B  H! _global-reputation
" |# R% q  `) ^- b$ h: ?credibility
% Y5 R, P* B! @* o4 d$ V;;
评价可信度,每次交易后都需要更新  j- S, e& a; e
credibility-all0 C1 c" r' U- A! R( K  C$ l9 S" ]
;;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
/ W7 o' F* f! M! x/ t' y
% R- F3 D& a2 D6 [! `;;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$ f  u4 ?" ^2 @* M
credibility-one5 \& s# T; s1 w8 z0 v- x( _. j
;;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people8 ]3 W* D6 R/ v% x5 U' f$ I4 U% u
global-proportion. f/ o9 }4 R6 i- F! V
customer
! `; u  u2 }4 I- G3 s. Fcustomer-no
! p, g* }' H* A6 X* l: ?- Strust-ok4 O$ X, e; _; s
trade-record-one-len;;trade-record-one的长度' S6 N% J3 u  D# \, r' a& i! B
]# e, W, j1 i8 Y5 ]( E5 X
# h2 `4 V* L4 M
;;setup procedure
* e+ e$ M* ^  b4 L: r
) `  O* K9 n! t4 Zto setup
1 c" y* F, q2 A# X+ S' T# e1 i. Z( s2 Z9 \( P8 N! ~* |
ca
0 z% o) z4 ^, L' K# X

, t3 W0 L7 E% c" Dinitialize-settings
( I: R5 g' o8 t( {

. ]0 I; _% A- ?& Acrt people [setup-turtles]
0 m) E; J# d  C$ \& T, @% O% D3 [) y

4 r. E# l9 L5 Ireset-timer

, S6 D* w! _# L' o! j4 r
5 i7 }# L. N1 F9 s0 b; ^poll-class
1 ^* T" C; j( X/ M! J( m4 Z: C
6 e4 t6 C" p. j( T+ k
setup-plots
1 a+ }1 v0 t7 D

9 P4 w; }2 e! W" h" k, t- F3 Qdo-plots

' T  S4 Q+ t) R& Uend
2 l9 E7 [  r% @: e5 W( Q$ d# ]" h' ]$ X( y  Y0 a! ]/ L8 [
to initialize-settings
% }1 _* L, U3 l$ |0 Z
- v# `: R1 a! S% j9 R- jset global-reputation-list []
/ Y5 @2 I3 V: p8 d8 E% F0 s

. z1 r0 ?2 c# G4 u/ Aset credibility-list n-values people [0.5]
5 h- {" c! `: |( _  ]3 z4 K0 n6 b, W( E
& T* D3 t: w5 c6 P! {
set honest-service 0

6 h6 A/ W2 n$ i' P! J
+ r: A% }+ s* m. @9 ^+ @set unhonest-service 0
* e- ~! ~- B& f3 e) {+ e6 G

4 O4 t* E( o3 L. W0 b7 Gset oscillation 0

. ]& ?) y  g! X2 G" J4 q) b* p+ O% C+ f" n
set rand-dynamic 0

2 N8 l+ z# Y; M/ ~3 ]  p1 ~8 oend
3 t8 {! U3 d) o) C9 n/ E5 P* k( T
to setup-turtles
) P$ |8 u$ g/ B$ _" h" Zset shape "person"
7 D2 f, U3 N9 B4 u5 ^setxy random-xcor random-ycor7 z5 h: ^7 r( L
set trade-record-one []
7 ]/ _, w& m, l9 a( S# H

& U4 ?% p; G" Q& H1 Lset trade-record-all n-values people [(list (? + 1) 0 0)] # }* P; f! H' t4 R9 C/ ^

" C$ N% H! k  {! t4 g) fset trade-record-current []3 z: {1 ^3 |" x2 Z
set credibility-receive []3 @7 }2 u" g4 `  e2 ]
set local-reputation 0.5
8 q9 r  l+ f4 V' h7 C' Y+ Y% j  nset neighbor-total 0
# C# Z1 d8 u2 `set trade-times-total 0( F# E9 [1 @# ?8 q# e% B3 n
set trade-money-total 0
6 b; Q4 w1 k# B) C1 pset customer nobody
. t1 j* Y6 k0 c( oset credibility-all n-values people [creat-credibility]3 O( X6 Z/ `- ~& L
set credibility n-values people [-1]# I$ z1 R. c7 n, d$ `
get-color
) m7 {# t* Z7 A( n
% O; D" V( o0 ~. z5 p9 ]5 }
end7 x9 y! \2 I" @# E- J1 r

, q7 s' A) i3 zto-report creat-credibility) f1 G8 w! R0 k" w4 x/ [' x+ ?
report n-values people [0.5]% r- c2 V: F3 d: B0 L# T
end
* D8 F# b$ z6 F; q# @5 f1 \% t; F1 H5 C  _  Q2 t, A, U. ?7 a$ Z
to setup-plots
0 H. N* n* S/ h3 W$ G( c, Q, ~' G2 F7 q% z
set xmax 30

' a2 N, }8 u) c
. ?* ?9 F/ G. d" P1 T; y$ Yset ymax 1.0

. Z3 c' y! U8 u# j9 }; z) c0 U. E9 m# ?2 Z; i
clear-all-plots

$ p5 |: y, e  h. G; W8 ~) t8 l0 p3 ]: ^) o* Z9 {- F
setup-plot1

- [" l3 \0 r3 i# m  q9 H8 i& j( H- D. L8 M5 t- m) s1 v
setup-plot2
/ S/ B" |, i% D; H  ^# ?6 \
. I- g% X2 {) o" S; X; s. y$ X
setup-plot3

$ R" J7 c  u: a: y, b( }9 Z* Aend: {0 z" j% y1 |
' M/ D0 A1 e: E
;;run time procedures. w6 v1 H( W2 G* \" K

% e# O# k" B! b; m9 h, `2 }to go
$ p& V2 V7 c3 H  ]( D/ j
4 {& d" }7 n1 v6 `7 K' p8 X% Eask turtles [do-business]

; y- t+ \1 a4 ^! c1 R+ n. hend
' k  X; S7 H0 k( G2 R0 z" n2 ^6 g# ~7 d4 \: Y$ D9 ~
to do-business # Q4 D& s, c, X
9 x# _& t" K* [; W( v* ?: W. ]
( M# ?# k" {$ a8 m9 [7 y  \
rt random 360
5 c% C8 y, |7 Z8 V* Y0 H2 N1 d0 I/ P
& q. ]; i' A9 `
fd 1
8 o9 T) Q! G' M, ~# B# ]) m  ?) J

2 x+ \1 P" V+ l# {5 S6 Lifelse(other turtles-here != nobody)[
8 _6 P5 q' F1 Y1 {

+ g7 F/ w/ y0 o8 w4 n" ]set customer one-of other turtles-here

5 O( A% A( N* [% s' p) t% D, g1 N
9 N/ M& s' @) N; O( h;; set [customer] of customer myself

- d0 X- f, g) K* ~% N4 V# N" g
& l/ ]! L- r) \* b( R' S$ Y% f# {set [trade-record-one] of self item (([who] of customer) - 1)9 H, T! c4 |: u3 _
[trade-record-all]of self
, J' }5 ]' A! D. i' K/ };;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

2 L5 R$ M: ^! F& c- O; o, S& G' O# y" l7 N; }6 A& y
set [trade-record-one] of customer item (([who] of self) - 1). c' f. @. l( N. E6 ]0 q1 H8 C) H8 r
[trade-record-all]of customer

+ ~0 m* J* Z" j! D5 D. c1 h% ?9 o9 S8 b8 Q
set [trade-record-one-len] of self length [trade-record-one] of self

2 Q  B. ?. M/ e# w8 L' K4 ^/ _$ S
( g# E2 r$ F" E$ k, F. p: [3 Aset trade-record-current( list (timer) (random money-upper-limit))
% j" a9 @/ ]: k" G  h* ^# q

0 s- c7 s2 h' C- ]8 R- Xask self [do-trust]
, I" p3 t4 c! r. S' R- S1 p;;
先求ij的信任度) a: z- }" l$ `
/ f  G! G7 @3 h" j) z" J$ q: K
if ([trust-ok] of self)- [  H9 M" g0 F1 b! |2 U  {5 H
;;
根据ij的信任度来决定是否与j进行交易[
. T+ Q& U# H& W  P% K; x/ task customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself* v+ E! A7 U1 n+ ?2 Y& Q
6 p" _% D0 o6 O1 N9 S/ q. n
[

% ~+ y4 @4 v! a- r8 I3 p
# l  x( O' W! l* T2 n$ N; A) i- i' Ado-trade

9 _7 F6 u8 ^" h& g5 `, v, _# m; Z9 _0 l0 p
update-credibility-ijl

; `% @5 E& L' Z' V8 l; C) I* r
! R9 s* |' b1 K$ Q5 B( M- Dupdate-credibility-list
4 D8 o, J' \5 o- }
% r$ O. n! V0 u5 F
7 e( ?5 O( {6 J
update-global-reputation-list

6 j) e. {, C/ Z
2 [- R( O; f% r4 `7 _3 ]poll-class
+ x: f, y* Y, |2 J9 R
" v& B: S+ r+ D) e
get-color
& S" E! n, H" x. _- ?1 t

, @9 U& ]+ l' k0 K% C]]
6 ?, B5 m8 L. _" I8 J% Q- F: i. \; f
9 U8 c0 X8 m+ a& f- Z;;
如果所得的信任度满足条件,则进行交易5 ^  K7 ^. n7 z  k1 H" V4 H% \

8 n9 j) g* l* ~2 l$ v( \! h% o- [[
1 ^( L- c: Q) A. j( k- U4 r. ^% L
$ S; G) J0 v- u! ?/ B: p! h6 h
rt random 360
: o# m9 o$ h4 P' D& A7 a# w! V

  A6 m2 l& w$ T% Q: Rfd 1
' j' e0 |4 P& M5 o, I" h( }8 C
4 x' t1 N, y  ]5 C* O9 a' O
]
5 ?/ r' j9 k# I% |5 O
' _. t2 v, D% n5 y% y2 s4 p
end

1 b1 N: g. ^& `; [& S0 G
! X8 ~* p# p3 d% U9 fto do-trust
2 i  K- ^( T3 t8 @( j$ @9 C' Zset trust-ok False
( R6 I7 n+ s2 Z" e! Q* Y
( u8 b" D7 _. `

2 g# W! w! u: d9 ~let max-trade-times 0
- X. ^* I, u* P, X7 Jforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]+ B  J; H# N6 k, q1 s' B1 v
let max-trade-money 01 o  S0 c: X* j
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]/ ~- _5 a9 a& G' T
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
- f2 j6 |" s/ G1 N1 b
( Z# }1 A4 B6 i  |; T* K% T
% q9 n4 @' Q2 |" G) g$ g4 C$ R
get-global-proportion) Y' v, Q+ k) A/ s/ x& c6 u: L% e  U
let trust-value
$ r( D* f! `8 G6 W. jlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
6 E) L4 h# k, ^3 y1 D1 \" W
if(trust-value > trade-trust-value)
$ J6 W: N( @3 ]) R/ j6 U[set trust-ok true]
8 H4 Y% ~/ R1 t+ y- }2 Oend: d5 o: R5 u$ ]: v3 s- H# [3 G" {

' w, e, ?! Y% l, U; \0 pto get-global-proportion4 k2 d" @4 C/ E6 x3 ~( C3 ^) u& ~
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)$ P5 l3 q3 j( ~
[set global-proportion 0]. E/ N; V$ v7 y/ J) @, r
[let i 05 V# {3 e: ^3 I% T
let sum-money 0, j) T, }) d: b5 j" i
while[ i < people]" G* d, c6 F/ u
[
, [0 n) O& K' w: xif( length (item i7 N3 R" w) P" p. }9 _
[trade-record-all] of customer) > 3 )
: a5 {# u4 M, p( H& I2 c
[
& t- ^$ a% ]/ ?* W- Bset sum-money (sum-money + item 2(item i [trade-record-all] of myself))0 E6 D' `0 s6 t4 l% n2 f
]
( @* H$ V( K5 r  u# O6 a]
/ a% S+ g9 m% Z+ J+ S3 p' Llet j 0
2 t8 e8 A9 H6 P: a0 U# O& r" ^let note 0
: Z3 `, V8 {+ M8 E- Xwhile[ j < people]
8 R4 X2 X& ?( Q% x+ `7 j[
1 l/ l( J4 p' m/ y+ Z* |2 Aif( length (item i
% o# k/ S* p, O7 O  P/ b3 p[trade-record-all] of customer) > 3 )

1 ~: H5 q2 _' }, |& }[
: B! Z' S0 P' C! G! _( N. Lifelse(item ([who]of myself - 1) [credibility] of turtle j != -1): Z) S7 ]2 u$ y- Y! L4 p
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
! W% t" ~! l& `8 {[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]; ]  a+ j6 ]6 W6 a) S" i5 O
]
7 |5 ~7 M! ^7 C) u2 k2 w' K]" \8 [" {3 O# R. Q8 x+ c* A
set global-proportion note0 x4 O! d7 `3 y2 z- w
]" O1 p( s) _/ P- p2 i) j1 \$ J
end
  c; _$ b' \* q* _" O/ T" U4 T) S  k9 p0 y; ]; l
to do-trade
3 Y+ m* O* n! a, ?;;
这个过程实际上是给双方作出评价的过程! L8 Q6 Y. w8 {! b3 A+ q
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价& ]- C9 m6 y2 I8 k; }$ O
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价" O+ b3 c% \. T3 j$ g; W
set trade-record-current lput(timer) trade-record-current
  b/ H$ @% T+ C  |3 H;;
评价时间
* R2 O* M9 Y3 V5 D" Aask myself [( W+ S3 f5 z* ^% X/ V
update-local-reputation
$ E- w# F: G( d: @( Yset trade-record-current lput([local-reputation] of myself) trade-record-current
* G( K. Y4 S! |5 E( r; I]" m4 m2 j" g1 e# L+ d2 J! t
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
2 v( ^" ~# c  Y2 O;;
将此次交易的记录加入到trade-record-one" x( x& O) u5 V- B
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
% a5 G# n! |, _let note (item 2 trade-record-current )
; x% K4 B% r8 e1 ?  |set trade-record-current4 X# \- L, z+ ^5 X$ r* m/ W5 N
(replace-item 2 trade-record-current (item 3 trade-record-current))

: V+ O3 J7 d8 w& g+ V( Lset trade-record-current
8 q: d+ ^& _! L; z8 g+ `/ V: ^(replace-item 3 trade-record-current note)
# k: K, @6 ?( _5 m8 `. D& y2 E
) X5 h& m6 ~4 L  c2 _

, Q: x+ W" B3 T# Y0 d; Task customer [1 j' ^% n0 K/ m1 g2 j4 \; W
update-local-reputation
* M+ a0 X9 Z2 g; T% ]( e# T3 J7 \5 Mset trade-record-current
6 B9 n2 U* _4 N* y& Y" G, K(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
1 R5 P: F  X/ j4 t* r& `
]
8 C% [) L6 d9 K6 e( C0 b+ X' S

9 y9 d& t( {  f" |3 Tset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer+ ]# V+ m: x+ l; `7 h% q

5 n; m7 A! V. U8 @set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)); y3 e, _( B9 G( T( u. @
;;
将此次交易的记录加入到customertrade-record-all* }6 }- \% N3 H
end. m8 y5 M) S1 D0 L$ u
  ]3 t9 N0 ^5 T9 ?% P+ f
to update-local-reputation
) k( L' D. F- c1 R2 z7 _, Tset [trade-record-one-len] of myself length [trade-record-one] of myself
0 f) T2 o" O- T* P7 `- [: }2 j  {4 h. n5 d2 I
9 i! B/ Z" V: R3 ^) D4 i8 O
;;if [trade-record-one-len] of myself > 3

# l( \  w( V* v$ Supdate-neighbor-total
! s  [- c" G3 d;;
更新邻居节点的数目,在此进行3 u8 W* W3 A7 @; v: k
let i 3" F. \) @  L/ s3 k/ O/ `* }" u
let sum-time 0( D3 _7 U7 m3 N8 g
while[i < [trade-record-one-len] of myself]" b+ b: y- E& J7 |/ r
[. _7 {7 P4 ]2 }# u' E
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
7 O+ D% u# o& N% ]* x( A5 Tset i( a9 a8 V% \3 _& \; W
( i + 1)

" P+ M2 E2 c2 \]% b$ \9 s* c$ H  s% r5 Q
let j 3
: M" R4 s- c9 }9 [0 E% nlet sum-money 0
) Y' m# a& ~+ N0 iwhile[j < [trade-record-one-len] of myself]+ y: T7 ?8 b/ P
[
* K2 s6 [+ C7 d: C6 d) Iset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
" @% Z5 f6 I. G$ @4 y' Y3 jset j3 d7 M5 W$ V  X6 e( z
( j + 1)

8 W& E! c% V! L2 o6 x]! x# ^1 ]! p& k! R; K8 W
let k 3
; J1 Z. q' |! E+ R. `let power 0" f3 _( e: ]# ^/ q! D
let local 0$ u3 T7 y: P5 n
while [k <[trade-record-one-len] of myself]
' f! c' {6 t6 o/ ^3 b[  L) A2 N* K8 K. R) f  Q: `! a9 a+ I2 q
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)
  F# z9 a& }1 \) @* L5 Hset k (k + 1)
5 W+ R: Z. D5 q) o1 H: s]
. x* i2 Z# s+ E, O- t/ wset [local-reputation] of myself (local)
- o# @, t5 i- P  Vend  f! p! u* l' e" u6 Z0 K, m

3 z  x; f3 l0 @& w2 B& Y. O" Gto update-neighbor-total
" N/ s+ P; L& s9 V2 b
! }4 m. r" U% P+ b: I8 jif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]; q: E; X% F0 _. a  V
4 r& C2 y: a0 k0 N
! J( c/ Z, w/ y. c
end7 {" b2 h( q% x1 v" l
7 v3 X; v, I5 U' b" f( s4 ?. O  u
to update-credibility-ijl ' _9 s- F1 r9 w' Y0 ]4 p

7 |3 u6 V3 `3 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。
+ ]+ c8 q# T6 elet l 0. b7 ]' A$ {" B: W; |% M5 J% K
while[ l < people ]
1 B' ], t- W3 t- i! t;;
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
/ b0 t4 N: Y. Y  ^' I[
* ^% E3 J! Y: o/ j1 Flet trade-record-one-j-l-len length item l ([trade-record-all] of customer)" q8 [( y/ ?+ C% T- I7 j/ ^
if (trade-record-one-j-l-len > 3)
/ s4 Z9 j" v; S5 N* H. l[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
6 k0 }' b/ L, M/ flet i 3
# q- g1 j3 g( C+ A  O: x! G6 n6 Flet sum-time 0' v9 w- G0 V0 Z% P; q
while[i < trade-record-one-len]& W. S. O+ R) p* I- V1 |" Z
[
+ ]. \: w* \) o% m8 G1 t& w# bset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )+ J+ m) n* B3 S" T! [- L
set i, u2 e7 [2 D+ E: A, O/ `# r7 C
( i + 1)

" j) H, Z+ d8 |" d]
9 ~# o1 Z: v" U! Y# [# ?let credibility-i-j-l 01 U; l8 {0 x3 N# N$ A
;;i
评价(jjl的评价)% }3 r* s8 a2 W) u
let j 38 r' m4 i# a1 I1 ^7 y4 O  k! B. }( l
let k 4
$ U/ P5 f2 h: l) u2 }  _9 Rwhile[j < trade-record-one-len]
7 v( Z2 ^9 V3 R[
5 w: l3 R% L7 \1 R4 H9 q+ Mwhile [((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$ t1 E; ]: X$ }4 h
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)" {$ Z) D. Q9 \( v; H
set j
3 ~( b( d( o! p( s) ~( j + 1)

8 ~, L2 Q( H7 q8 g9 N]
7 G& j6 P. p' {9 vset [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 ))& {8 S& t7 t* S) S4 a/ c$ Z

7 k4 p( b( e& i7 k
- Y- l  \! p0 M
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
. W5 }& W# d" P# D1 E$ W9 p7 e;;
及时更新il的评价质量的评价
+ m8 C( u; g& ~5 {4 b7 X1 \: ^set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
2 o7 [$ y3 Z6 D" P. Gset l (l + 1)) ]% ^4 @0 e4 Q
]% n  x1 N, u0 R
end
+ [9 ~, @' C' j* F6 K  u" c8 e5 J/ C/ j! u2 U& ^
to update-credibility-list$ Y& _) N& e8 ~
let i 0
8 {9 h9 F6 n. C0 Bwhile[i < people]* b- {2 a8 L7 ~; {' M
[
; [* A% d/ V, ^let j 0+ ^7 x( f2 h  T8 Q5 M! Y# {
let note 0! V  H9 S8 A, l
let k 04 C; d! _7 D" ]( ?
;;
计作出过评价的邻居节点的数目+ O* z7 N2 Y, w  r, K5 U
while[j < people]4 ^3 [5 O( t4 r# X8 J% N3 P
[0 v( I. v, L* ~8 C
if (item j( [credibility] of turtle (i + 1)) != -1)& ^0 M3 r$ _# ^( U: ?
;;
判断是否给本turtle的评价质量做出过评价的节点
2 q6 F6 e4 k5 G* a4 F+ m% p[set note (note + item j ([credibility]of turtle (i + 1)))
7 Z8 w0 y: {' T;;*(exp (-(people - 2)))/(people - 2))]

% T5 F: r2 J/ q* ~. m. P, D+ |3 uset k (k + 1)" o. {/ L+ W3 ^3 b% a
]
3 O# r+ D* ?1 g( A4 qset j (j + 1)* v7 f% B* `( J
]* ?3 o" C; M3 x, G0 i5 b/ Y
set note (note *(exp (- (1 / k)))/ k)
( \6 a8 ~- h) r2 h" l7 M9 J5 jset credibility-list (replace-item i credibility-list note)
8 B1 g/ E) @$ D) iset i (i + 1)
/ }- G& O7 Z# A" }  k0 }- i]* q' k3 v! M" P2 F5 W
end
' K" n% t9 m; B5 h7 W# L+ C1 ?$ j6 }) t; x; p
to update-global-reputation-list9 V" f/ ?9 C  \5 x
let j 0
& T3 }4 @/ g8 \# S+ E  iwhile[j < people]% Y& B8 T- Y; D9 Z3 S
[
: @+ `8 J% D/ D- M" i# a5 klet new 0
; Y, {% r. I6 V5 i;;
暂存新的一个全局声誉
- \3 d# y# V% w( C0 D& d& L( ulet i 0
$ R, N( G' S+ g9 h; G2 N; Ylet sum-money 0
7 _: H3 \0 s2 C( N- b. q8 tlet credibility-money 0& o+ }7 o. ~3 v% F) d7 e' t6 `
while [i < people]  J  B( z) y# Y1 m, h
[
9 X- L1 `+ c9 o0 Vset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
" t! p, d# w4 O! uset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
- c+ A  k1 W, C2 @! p5 Pset i (i + 1): ]7 p$ P5 K( Q4 V! [, C8 a8 j
], i/ z- [& P- y, E! O; O, d- x
let k 0
, v" e4 |" _4 R7 \, ^let new1 0  R7 l( |: _4 s0 L& g
while [k < people]
9 B) H$ d7 H3 ]& C- M+ Z! u[
' H, ]$ N. y9 l, q3 Wset 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)
9 p2 U  V( o  t' g# Xset k (k + 1)  `3 s* h9 P5 |) O/ J1 ]4 V5 o
]0 B4 O6 L  p! L( H
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
! |. ?* S" \1 W# S& Jset global-reputation-list (replace-item j global-reputation-list new)
: @; z7 ^' V* \2 n; @9 Y) Wset j (j + 1)
1 b) Q# g# \" E+ B$ J]& z0 Z1 U# A7 R9 t- x1 F
end
  P2 V. h3 z" m, k( A; W' _5 u& Z- O

: o# n1 e0 l) q3 \  \% x6 o0 s: \- q3 P
! M, N6 Y( b! N" \. Fto get-color3 c" T2 g- P1 O$ C8 m3 Q

8 m6 P& ^4 {8 S5 E" R, Kset color blue
& T+ V$ T- W, K8 Y
end  C7 G2 w3 Y' d* v

" V$ g! |" e* M2 t% \9 Dto poll-class
) f; s( R! `+ e2 |2 ~: s" T. E5 yend
, E/ ]' f# r* ~) Q" [2 Q9 e
* D, P5 U( X; {6 Z8 bto setup-plot1
5 @) ?% U% c7 v2 \2 p5 M: i( n( F* i# t& M! i7 L' J' `. t
set-current-plot "Trends-of-Local-reputation"
  s2 f( w0 @% a0 Y0 z4 I2 _3 ~
9 T4 F3 T. |) H+ g0 i4 Z# a
set-plot-x-range 0 xmax

7 a  {3 e; Z8 D" |7 k1 c/ S1 q8 G( n: Z
set-plot-y-range 0.0 ymax

1 j9 g: \. H3 K1 Mend- H) f- @/ u6 i- Q) L& j

+ N9 P, n! _3 C. Y( b/ H! ~to setup-plot2
3 o, R  A  H" }9 i, g1 ]) i
$ S% o3 v4 I5 ~; O, cset-current-plot "Trends-of-global-reputation"

2 ]; R" X; v0 ~4 W- F
; R' A. M+ u. F% Wset-plot-x-range 0 xmax

& m% g% v( s& \; i/ u
  _7 ~& g$ ]& w6 U9 p; j% rset-plot-y-range 0.0 ymax

$ q: f7 }- l7 o- B% K7 L8 Z4 cend
; T& r( |# s9 ?' L  R+ l- ?  {: r4 E  ]7 x( `- _5 p( a9 y. t
to setup-plot3
0 C" }; K& l9 S6 H
! O# ?6 N/ B& c1 [  H9 ~9 bset-current-plot "Trends-of-credibility"

* q1 c% h9 L! b/ E/ q- ?- f* \& F- ^; P: q$ v5 `
set-plot-x-range 0 xmax
% y( A: k2 Z/ Y. ^7 ?+ W; A

; i, i1 X  e0 p' x/ Uset-plot-y-range 0.0 ymax
( C$ M# [+ Y8 K4 \4 Y* H
end/ d- O' N6 R6 N/ @0 l* w7 X

0 I1 ?5 \( J. m9 Q( W8 c6 `) Xto do-plots
% B8 x$ @7 ^: u' P* l& nset-current-plot "Trends-of-Local-reputation"
" ]: M3 Z; A2 y) @set-current-plot-pen "Honest service"' |$ y& j0 p- B+ z* A
end) W9 {8 u9 o! E4 j* |7 z; U

; {6 r/ [0 _5 k% p) n0 ]% e[ 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.6 r5 X  b6 }& s; p8 e" c1 z

" r: g( |) w  b/ G' @' f, J! ~9 c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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