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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:( x! N- i9 E' {) I5 p: S2 E
to do-business % x+ q; l( A2 T- M; l: ~5 k3 i# v
rt random 360  q' H) V- o1 Y! Z( H9 I9 `! _
fd 1
  S  ?/ A* _9 o0 ^1 U7 M- ~ ifelse(other turtles-here != nobody)[
( e% m- {! L$ \- a  i) L   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.
2 O0 v9 z; Y& o   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
: v) C7 {2 ^  F" s- @   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer# W+ Q; C# Y  h7 V8 D
   set [trade-record-one-len] of self length [trade-record-one] of self
6 [, w9 i2 d0 `6 z   set trade-record-current( list (timer) (random money-upper-limit))0 H: L9 A) s' T# k* @6 |. J! l, d

, y' \! \! Y+ @5 Y/ _问题的提示如下:
& P( B7 T; u" _; c) ]; x4 P# l: I6 X0 H5 w# }
error while turtle 50 running OF in procedure DO-BUSINESS
' v# K- _( k6 `4 k1 `+ ]  called by procedure GO
( I) E: g. o$ p/ y$ f- K. VOF expected input to be a turtle agentset or turtle but got NOBODY instead.! X+ H1 s7 z+ F2 m# o  w
(halted running of go)+ D; W! _, r( \) {" B
" M8 B: l# u8 o! |( z
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~~  F! M- r; s2 l" M4 H
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; I) Y  o$ W- x8 x+ b
globals[
# T, t- @* [# gxmax+ Y% D) L4 h) g, T3 s% {' m
ymax
7 I; b' }7 @- |global-reputation-list% z% z* D* x- C- Q9 D

+ |2 c+ n( v8 N; b# M;;
每一个turtle的全局声誉都存在此LIST4 {' u1 O4 e' g8 z2 h- `
credibility-list/ }: O2 F6 ~5 E0 \1 N
;;
每一个turtle的评价可信度" y5 ~! o# w: {6 G* b7 f: c
honest-service
. Q+ e2 }% T/ V0 `) q; j" zunhonest-service
7 `5 S2 p: \& R8 v* R5 v( zoscillation4 O; u: R' S- _+ l; u
rand-dynamic! W! a6 {* m0 M( N( j8 T+ o' p
]
+ ]' P$ m' M6 j* S
- k) T! ~+ x% T4 m- D$ mturtles-own[/ g2 a! ]) y$ ]& v+ O" J: y
trade-record-all" X3 A/ F5 g4 d5 `1 f
;;a list of lists,
trade-record-one组成
; V2 e( L$ G2 o; J) B+ gtrade-record-one' H" w. M5 Y+ W7 p
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
/ b8 p3 q4 K5 z* g
. R5 O" h# i% f; T0 n2 Y5 E;;[
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]]
  h4 }+ m& v1 a& ~; B0 ~( Btrade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]6 a2 p, I, \$ ~$ v
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list8 O: A* q: I0 F5 l$ |
neighbor-total
4 X7 U+ |4 \8 t' v* `" ?;;
记录该turtle的邻居节点的数目- p9 U9 W& c8 \, O' @
trade-time
6 t  n* N6 P; l5 O7 n7 f4 a;;
当前发生交易的turtle的交易时间
( n- j0 Q! |6 ?4 Zappraise-give* `9 }* M0 c8 [8 N& {* x
;;
当前发生交易时给出的评价1 {* w! `4 g3 ~  ~
appraise-receive
' u! I5 j4 j8 ]" R5 X3 ^" Z;;
当前发生交易时收到的评价# A' N3 Z% q. t( b+ U, z
appraise-time0 I( t* J1 V- ~8 g( L6 m
;;
当前发生交易时的评价时间
! F# A9 H! Z, ilocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
3 G( W& D" c/ K, strade-times-total
- w7 T. B( d! L;;
与当前turtle的交易总次数
$ [4 ?$ C) w: o6 Gtrade-money-total4 K8 M( G2 F8 E
;;
与当前turtle的交易总金额8 e7 r$ w- o9 E; k6 u
local-reputation8 x4 Z; Z3 K; K9 P0 ]
global-reputation
& `  D3 ~: w8 o6 X6 {# Q. a& Ocredibility
5 I; m% E9 i8 H4 N3 w;;
评价可信度,每次交易后都需要更新
% \7 G* U. y% s7 S+ u2 u) W2 ?credibility-all
* ]4 j" o6 r1 _2 _$ [( q1 w;;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1 B% ^# [0 j; N! I% P; t

$ ~4 Q( ^3 X" I  A: j1 x' d;;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
+ h9 D4 ~; X" C) \' Y0 ]: Xcredibility-one5 c7 H" i* j' ^! o. ]4 A( B( S5 {
;;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  p9 n1 a0 t. ]: E3 w' p5 P9 d# U
global-proportion
8 n3 @$ o5 C  n$ U. ?customer) F4 O0 W% Z5 k  j+ h, |
customer-no
6 k3 V* ^* J+ O- T# ^" H4 Dtrust-ok  m- _7 O' Y3 {
trade-record-one-len;;trade-record-one的长度
9 @. r3 m+ Y$ i0 e4 G9 \; |]1 n2 N8 C) f1 S7 O

" B# A/ o3 t: U: N;;setup procedure
$ G* G# Y7 D3 ], k2 t% c! `
, [2 x0 y% t9 G9 Tto setup; g) h) u/ k% U" [$ C9 ]- f
; j7 v6 K1 N8 R3 p; ^+ `
ca
! L" n: ^) H3 @) X: N+ `) h

3 P$ F4 E( T# I! D0 [initialize-settings

' S. q! I0 ]1 g/ W9 ]8 A* W  m/ C3 {( p8 b
crt people [setup-turtles]
) G; ^, H( Y) D! d1 `

- X! I/ a/ p! Oreset-timer
- X! y  p9 W4 z; Q) v

: Z# m$ }7 ?# H: @7 Dpoll-class

9 b$ ]% ]; d  w3 a* {. q: H6 `5 x1 X2 ]8 [% |/ |6 k
setup-plots

1 j; ]" a# W, l0 Z$ u! @
) j  e, S% R& L9 G- V7 M2 T" L& odo-plots

/ I; k& p" I3 r$ U/ |end  w* V& i! ^3 d; W

6 n  `0 y+ c$ `to initialize-settings+ O; }" [2 N" u. d
( d5 t* ]# b- N' u
set global-reputation-list []

. c4 K* C- Z! ~! Z$ ?/ ~3 o
: t* D: g- f) i7 [+ p( bset credibility-list n-values people [0.5]

; m3 z2 E$ |7 G4 ~4 f" y; O! _  T& v2 `6 H; L  R- B) l
set honest-service 0

* u0 k3 D; U& V9 ]' H+ ]
7 @3 f3 K2 C! {3 ]set unhonest-service 0
$ Q. Q0 d; w  j% J  c- e- V

9 i$ {8 B2 [9 C: ]9 Iset oscillation 0
$ t; P  ~0 ~. G  I

. Z0 D! q4 L3 u! o$ F1 q) sset rand-dynamic 0

" s4 f* J' p# Z* Z. D, n6 q% [end# o2 V! l% L* t& G# f# d7 u
2 C. ?0 r1 c9 e* C& m- K
to setup-turtles # z, s( P8 z/ _# A* W; B
set shape "person"
: {% x1 m# V* \/ Gsetxy random-xcor random-ycor
! |( K; P/ I9 F( y( i7 gset trade-record-one []
6 R  [  k6 C: Y) f

2 g, i3 s. ^* ?set trade-record-all n-values people [(list (? + 1) 0 0)]
& E; a- k5 E/ c- @

4 U3 p3 r. _9 ~( c% B8 vset trade-record-current []
2 X0 |! d5 h; i7 Jset credibility-receive []
) n) `# a) p  [+ o3 C" ^set local-reputation 0.5' h3 l# \# n7 J( q
set neighbor-total 00 C; c( H0 u" }: R
set trade-times-total 0
' j1 a1 N: J, ^* |. r: R/ r9 J- Qset trade-money-total 0" l/ ~* T2 Z: S7 [/ q3 z  p
set customer nobody
; L% K& u1 v/ q$ d; oset credibility-all n-values people [creat-credibility]
- w# D! |" M2 {6 q' @set credibility n-values people [-1]; i; r" S% \3 }' _$ O' n9 e  M
get-color( |' e- ?/ [; ]5 g% m
; O/ X- k8 G7 ^' P( C
end
9 m4 _  f/ ~' K3 T" Z: c+ B$ p! r4 ?- m! W6 J  X5 B
to-report creat-credibility
- j$ C" Z* q0 c! z8 x) Breport n-values people [0.5]
: _8 g2 N, P, O9 |7 x' dend
5 [4 ?! F* T& f+ K* |" |# W6 V
3 a$ G9 w5 l/ `( H, `0 e! `to setup-plots
2 `2 d4 [* v# V5 f
6 x8 R) h6 w/ b/ oset xmax 30
0 u8 x! i3 d0 t
8 j- Q, n" g& v6 O% O) W4 q9 ?
set ymax 1.0

- s. h! r. P+ W6 b2 L9 R9 S- ]# T
5 W0 U1 z8 z: fclear-all-plots
3 j2 ]: s3 M( ~  h9 W! D4 j, r

$ g; k( i4 f! ~0 {2 Y# zsetup-plot1
7 _! ^, s2 O9 p, E% W4 n% \/ J
6 U; ]5 e# }3 D/ W; Z- S! `3 q! }
setup-plot2
- @8 d. l) R4 h; t0 H

1 B' `! B! \5 E5 l# K2 Z( msetup-plot3
( D1 ^6 g/ u/ v
end9 |. z, F! x9 s: x# c2 o; a. f

  V% R6 v2 n* G( M, i* d/ a;;run time procedures. r/ L0 ?9 M/ i( D7 C
) Q0 ~! J7 }6 B4 w( i' P4 j& X
to go% h, @  F  ~6 _* N

8 M, t' S, d' k' [  y" H$ |ask turtles [do-business]

. W' k( }- A; M+ Hend& e$ u, T% N0 I  N# X8 j

0 l: ~6 p6 g" \* _7 I1 [to do-business
' X& s7 y. x8 D1 W

& ^* ^7 v, U8 q. D0 [+ ^0 h3 l
7 ^+ }+ j- ?, W, p0 b& D; L5 c9 lrt random 360

5 i  \; x6 z( y0 \9 A3 J2 f
) B) O4 _9 ]3 Z) `fd 1

$ B' q! o6 ~$ F
5 Z; b4 ~9 r6 X1 R4 @" Z$ W2 h9 }ifelse(other turtles-here != nobody)[
$ H/ x/ F% J+ l6 }
) `# o) W1 j  N( @
set customer one-of other turtles-here
5 v( K) B" A! l

+ y( ]5 y2 r& I# q5 p, g;; set [customer] of customer myself
! {; S6 \  k4 m( J8 L, t
9 R$ Q/ B: K, B
set [trade-record-one] of self item (([who] of customer) - 1)
9 h. w! O; K, z$ c[trade-record-all]of self
& z1 ^' ]; [8 h; j. m;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

' B* N* ~2 K+ Z$ Z' u. S$ \
: Y$ M4 o' W/ V$ zset [trade-record-one] of customer item (([who] of self) - 1)/ d& t& g. C# y. x7 f: n
[trade-record-all]of customer
% H$ j  K! ]2 b; y0 c
1 a, B# C+ v8 ?5 G$ ^( C
set [trade-record-one-len] of self length [trade-record-one] of self

3 ^' W0 x) M8 X3 Q+ P  }3 d9 Q/ [* q5 P$ U
set trade-record-current( list (timer) (random money-upper-limit))

) U6 V; N. y0 ?: D+ ?5 @, y% G- @) j) p
ask self [do-trust]; P9 {* ~2 i, D2 x1 J! R; ]
;;
先求ij的信任度
+ Y+ {  ~* S8 j# V
- {. _4 p* \9 }1 A( g9 wif ([trust-ok] of self)
  t* Z3 S% I# k1 q" U;;
根据ij的信任度来决定是否与j进行交易[
" O+ A7 U' H* Y' Uask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself: X0 G2 j6 p5 q' s& J, F

9 t. T7 g. X) i& k: h' e[
% d: U  H0 p+ C- }/ q
4 m- d& ?+ f! x" r: @2 P3 V9 E
do-trade

7 d  Y2 {% U8 @. I2 a" l6 R4 H8 J  c
update-credibility-ijl

. u: D% G5 k& A7 F# D5 z8 Z9 m
6 B. M; R4 W" R* x: @$ Qupdate-credibility-list$ E, W( a8 H; v2 u0 j, l7 W4 `# P
8 L7 L, R5 K  J' _3 S# a) @
& d' |5 y+ a& {# o3 Y: z
update-global-reputation-list
$ `: R- F8 e" T

: @# q) \0 M4 {2 P: Z, Rpoll-class

; z% F0 z( N8 s4 }# k
3 @! a* ^/ U2 _, qget-color
+ \9 w0 I+ ]; }1 s: _/ G9 N' Y

# B% y9 i( ^; D1 ~7 H# Y6 m]]; V, i0 W; g6 G1 n3 U5 x

% C9 R6 \) _6 L1 i;;
如果所得的信任度满足条件,则进行交易! _$ S/ X( A4 ~
7 l% B2 s9 i) l* d4 E
[

& p# k3 ^! M& R$ H* |3 ]
7 f8 `+ {4 e! V3 t" Lrt random 360

5 T$ z2 {% N. _( v1 b6 }$ W. m$ ]9 h
fd 1
+ H3 s' z0 N2 Q, L

, c0 P2 g! S, F( |7 b+ f]

; v5 N  a5 D" Y3 r3 @' c0 s+ U9 i$ C) }4 e8 b* v0 O6 x
end

' J, i. a6 w  o
( s+ `! v' s; P7 h8 N, nto do-trust
! I5 J% n1 i: O4 x- n  Cset trust-ok False  h/ D" X4 d" E$ X$ p. d3 r0 G
+ x% k7 c9 x$ }: ~/ V# _

. ]! W& P8 k6 J! E' mlet max-trade-times 0
6 a' ~& E4 e  W2 P# Nforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
' H* B: ~9 r) G' wlet max-trade-money 08 \- @$ Y7 b, Z3 L. m2 r2 j1 O
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]* r7 j  D. X% v. i! ~
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 r: o, Z+ l1 Q/ y: c! T

8 S" G4 b! O( O$ o& z0 P

: r8 k; j$ {" @7 ]+ T, A% jget-global-proportion) k9 v+ G; g, e) \8 l: A
let trust-value
3 |" y! {7 U" H! W0 ylocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

7 z/ I/ I8 J* Y' H+ e+ a$ nif(trust-value > trade-trust-value)4 V/ v4 W# k6 ^" g
[set trust-ok true]
/ }9 {- J, J3 q4 C2 n# c8 I8 oend
1 u6 k' ?+ j# ?2 A. _6 a" l8 V2 z4 K  C# g
to get-global-proportion
; _3 ], q8 r; M* Aifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)  R& \- d" C9 l  J
[set global-proportion 0]* m+ e3 p& k9 ?; e$ @
[let i 03 N8 j! O1 A( T) O6 t
let sum-money 0
9 w% D( Y  A2 Iwhile[ i < people]
! i7 p: q( U) v. U1 C$ w[* z; V* h, @" b( O
if( length (item i0 C: i6 G( o: b  E& q  R
[trade-record-all] of customer) > 3 )

1 Y- S! a, ?5 c[! D" U4 h, s! _6 I" g
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))6 ~' N6 f, y. U' d  |5 S
]; o1 y/ e% z/ ?- d: u5 h' T0 v" o
]: O7 a2 I& N0 x% c
let j 0
; q4 N: |: P, Y3 tlet note 07 {, H- [+ q; t4 j  \( W
while[ j < people]
, w* P# D8 L4 o" Q) w4 U[
( V% q: s1 |1 B8 O3 S5 m9 l( Jif( length (item i. f' d& P/ T2 R( n
[trade-record-all] of customer) > 3 )

" g$ Q& H6 x# J  Q[
6 e7 t3 u/ L) c" G" vifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)# B; [: e+ m  q
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]; d- d; O" E( H0 L
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]1 c2 P- ?% k7 r. q( p5 E5 D+ P
]
( d) k- }4 z- Q& y  ?]3 q, n& d$ u) r0 h. b- S8 i
set global-proportion note
, g+ k* z" ?: Q7 ^]: ~$ i/ [; g$ {- d7 d- m$ x
end
$ G& Q5 n- I! R9 T, N" |" x0 v! {0 j/ G9 E  z+ r; c
to do-trade
0 k" s% s; M6 V3 U% a;;
这个过程实际上是给双方作出评价的过程
7 b' M8 q' W4 {set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
0 P7 ]: L; D( w$ Kset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
( F% i6 n+ o0 j1 I4 C- `set trade-record-current lput(timer) trade-record-current7 d; w5 @/ S2 S, `1 V: z
;;
评价时间
1 k0 M, k/ P% a2 n8 Nask myself [0 j" e# I, j6 k9 r
update-local-reputation
6 u* S& b7 {0 `/ }* I  Hset trade-record-current lput([local-reputation] of myself) trade-record-current6 E6 `8 w' K  }
]
* T5 T- z1 L+ t  Iset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself) @0 q* A0 E- K+ {
;;
将此次交易的记录加入到trade-record-one
( z7 d% r& j/ p' X" sset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)0 z+ Z2 X1 i: g' u; D$ A' y3 z
let note (item 2 trade-record-current )' K7 z& U( L* g6 y9 u/ d& U. r
set trade-record-current" P! d8 l. K' s8 g6 y! }
(replace-item 2 trade-record-current (item 3 trade-record-current))
5 o, @" r( n3 X1 f+ U
set trade-record-current
7 b3 W( R3 W" F- u& T$ j0 o- n6 c(replace-item 3 trade-record-current note)
6 J6 `5 X( y- r: a! @! m; u2 d+ m) V( j/ e- H
9 C$ O) `, s% f1 i3 l6 w% u9 c, ?( C
ask customer [6 D% X$ ?7 g- L- ^; C( {% L+ T
update-local-reputation
  Y: \* O4 h; d: Oset trade-record-current
6 H+ ^/ a( H, e* B3 R  t- A4 E(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
8 ]5 u# R! \! Q4 b$ L3 e
]! i: H9 I: o2 O  E

/ A" X5 u9 \" v/ M4 L6 ]

1 a: ~; ]. f8 G1 _; l& u+ Mset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
5 C# s, q; k0 g& \

$ `2 e# c3 j& x/ ?- |set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)): ~7 }" Z* C5 U: n) A" w
;;
将此次交易的记录加入到customertrade-record-all
1 `; k5 u" p9 \; ]end. ?) I+ E4 \" n4 f& T

- I/ D( k, n4 p  [: B1 F" U* v! o. t0 Rto update-local-reputation
/ B1 O. [7 @( l% E9 ^9 xset [trade-record-one-len] of myself length [trade-record-one] of myself; [/ J8 w; s4 ]$ l, l

; c3 _- ?. J- X1 |8 x6 p7 v( e& R4 k5 q/ Q4 b( n% N0 H( z
;;if [trade-record-one-len] of myself > 3

$ y3 i/ A  e/ K  t# j( eupdate-neighbor-total
( H% M) |$ D( g1 P; i9 p5 W;;
更新邻居节点的数目,在此进行
7 l, o  {- r* Y+ s: K8 dlet i 3
, R! e: }8 u1 Q8 q0 |let sum-time 0- `; t  X  @+ ]* H9 l. v% M
while[i < [trade-record-one-len] of myself]% l, j: F4 A) k/ R& O* l
[
$ }! e; z! ~9 {3 zset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )4 T/ _2 n) l$ E# d7 ?
set i
: j) i9 P+ R' f9 {! _% P/ @7 D( i + 1)
/ }% }( z# b3 B# @% N; E% _2 C
]
/ z& [0 p% }) t9 m% f+ y( qlet j 3
. d$ E) K9 i5 z: j1 s% ]let sum-money 0
5 P, `2 H0 f5 O+ g. f5 gwhile[j < [trade-record-one-len] of myself]$ H; o9 f4 @7 z3 f* v3 r5 ?
[3 s* ?+ m$ q1 s! C
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)
+ e% S& g* T! \0 V2 O/ x' Fset j
* c( X( a: P/ C% F3 g& F( j + 1)
# W% f) P0 E$ N6 M3 ^9 b9 b
]
  Z$ e4 G! t" G" glet k 33 _6 ~8 w9 ^5 R: ^2 B& b
let power 0
6 d% D2 |' ]7 q" Y3 \. P9 B; v- @/ wlet local 0: g' d, Q! I% ?# Q$ T1 h
while [k <[trade-record-one-len] of myself]
! Y5 p5 X+ t0 H5 A5 [! H2 x  w[/ D2 X# R+ b3 _- R- S+ N( N
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) . D: X3 R  ^) Y5 \, d
set k (k + 1): d8 l. `6 R4 r
]% c% {8 Q6 N( q. Q, T6 ^  O) D
set [local-reputation] of myself (local)# [! S; n# g0 ?; N, n
end
' O( T4 }3 h" R1 e' g
& J' M% O* F1 S0 ]6 v3 Dto update-neighbor-total
# w2 K7 L/ L2 s' L9 t* H
& ]% Q' b/ e6 }/ c3 [6 D1 h+ X6 Iif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]7 W& R9 X8 g8 X5 j# k/ I9 ^" W* a
$ a- Z+ S. C2 g) ?$ u1 l

+ j, Z) h0 h, F9 [2 y: bend2 Z! J, {$ \' D( O  X7 I) a

  h( e* W; P5 T- mto update-credibility-ijl
9 T: l& A1 S7 j% A" Q) @; U8 r* o
. J1 h2 x9 J/ J  N; Q+ E( x$ }, h;;
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。
. ~2 ^; {9 n) x1 B) T* _let l 0% |" Q, A( W8 d! F0 [7 A1 o; O
while[ l < people ]
1 `( S% H) d! E) v% v2 @6 r;;
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( u4 n4 K0 z, n, x) H2 f+ t0 b# ?
[% A2 U! A/ u% E5 {4 Z3 N6 s
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
! X3 @& |' C  x2 w9 m5 z8 ]! ]3 Hif (trade-record-one-j-l-len > 3)
2 e) o. R, l7 Z9 j# |[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
  H8 K( [# z) Q) g  J1 B- `2 elet i 3) Y; I2 u! x+ l* D
let sum-time 0; r' _! A( f3 p! ?3 v$ |5 z, Y7 N
while[i < trade-record-one-len]
, T  O0 H6 j5 V  H0 I[- X+ ?- D: _* K* _+ c5 y5 H
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )- A& |0 x8 l* o& r
set i. n/ e4 J0 z2 n6 i, x) w3 ]; i% l
( i + 1)
+ r7 a! S  v# u; g! ]2 Z" ?
]
8 K2 D. ?6 U  y" f% [& Plet credibility-i-j-l 0
  K0 j9 g  y4 g( d0 S0 }8 d;;i
评价(jjl的评价)
8 ~( ^/ t1 t* F; C7 H) p  klet j 3- \+ b  p* T: n, Z- v' y7 j
let k 4
; E" d% T) a/ F/ b+ ywhile[j < trade-record-one-len]# E  e6 h% `5 s& d# d
[; `; G: d7 l) S  x/ y0 Z8 N) T) C' 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
: a' B5 z& z6 _2 oset 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)
2 b2 |+ _. v  w: qset j
! U/ N6 r, Q2 H: H9 @3 g( j + 1)
+ x& I2 h6 _; K9 d4 S
]
+ k0 I" Q" V: M9 L$ j( iset [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 ))' f* s; _* ^+ H  J. G
. L( n# N. A5 t$ [
' h% s; [4 P5 @' M
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
3 h: K- Y) I. A- A; {; v;;
及时更新il的评价质量的评价. T6 o( o) l1 @! I4 `
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
3 x! n- p- }$ oset l (l + 1)
, H! P1 p/ {3 J/ e  C; b) Z' h/ z, @]
2 t9 z0 n' V  E  P0 D2 I# b# H& ^end
& F, G0 u2 L) V, u) J* p4 }! d) p- a7 X, u9 v  K/ d
to update-credibility-list) P+ K# `8 L/ U8 S
let i 0
1 O- S8 H- F& l: n! {6 xwhile[i < people]
* c- p  h# u6 M( Q! r( {9 |# q[$ O0 e, \: X5 Q/ G( w) T8 ^( A
let j 0! J/ H7 o7 `. {! ^
let note 0
9 _* `2 H( E7 z7 B! P% p. I- ~1 k$ alet k 0
  T/ ?! b% _2 r. Y;;
计作出过评价的邻居节点的数目9 w7 Z4 J# n6 `" F# e" ~& n
while[j < people]
8 W% \/ I- ?% a- L' @7 M[
' N+ I2 r9 G$ \( n! u  `+ Y+ k" K0 Uif (item j( [credibility] of turtle (i + 1)) != -1)
6 A) a" k4 r, b% J" ]+ C2 |; j;;
判断是否给本turtle的评价质量做出过评价的节点
' P! G3 D3 ]5 S& A; C5 }9 B& r- F' t[set note (note + item j ([credibility]of turtle (i + 1)))
: o" y: G( f+ w" [: c;;*(exp (-(people - 2)))/(people - 2))]

7 G6 P5 {* H; A# k" y: s9 M: [- z4 v1 Uset k (k + 1)
1 Q7 {9 t  Y- U- Q2 W7 u  K]
/ y! A+ x( P: |0 v3 L* k# A( n+ Hset j (j + 1)
4 P, j: t( D+ o) s7 I, p! E]# {5 n$ A, V' x. w
set note (note *(exp (- (1 / k)))/ k)
5 Q6 X4 d1 r  ?& g. ?' [- d/ _set credibility-list (replace-item i credibility-list note)
4 m& O5 M5 e9 ^" N4 b+ F8 M, [set i (i + 1), f# T6 \+ \# ~& m0 @3 c
]% ?/ ]* d6 W$ s! f' \% e
end4 @" v$ A6 M; d% K9 L2 K

" t1 w6 P3 q/ K' Xto update-global-reputation-list; E( x& N5 H. J, G8 V
let j 0+ |0 B' R* R5 J
while[j < people]! F; W* H* z! v  K# k
[5 D) O) `6 T2 T7 X6 X( t6 Y) g
let new 0
, p. F  J1 S2 k: \;;
暂存新的一个全局声誉$ C4 v4 f! [8 ], x9 P# s
let i 0
4 H8 x: G* _0 Slet sum-money 0) l0 `- j$ a4 X5 n5 n
let credibility-money 0
% t4 u1 v. C$ I# R" P/ jwhile [i < people]- i- j+ u4 G$ X3 E2 @! m) @
[
0 ^# D- ]0 H- h2 A  U8 o1 s$ V8 cset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))2 ]/ d, V$ C0 z& F: V( S
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
9 g( H" d9 n6 M% Cset i (i + 1)* e2 Z, a) O. l4 y
]
3 k7 L6 s  H( U; {let k 0
! n; @( i; v; n! elet new1 05 l, t- m8 D3 I$ C& O
while [k < people]
, Z7 j: y8 e' u8 e[! ~& y9 @" ]4 _! 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)# C# e9 N* _- M" _
set k (k + 1)
; ?$ h* C) `0 B3 S/ g1 p6 X]
1 L! u% h' ?% _, D/ D% z  iset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) " i4 ], `3 u2 Y7 j  d2 v
set global-reputation-list (replace-item j global-reputation-list new)4 h2 n6 K* l3 B$ N8 v- g0 ?
set j (j + 1)
1 [  Y' y. C' u7 P) Y' m0 r" X4 V: D]
& d, S: P; F/ I! u# O% gend7 I3 O6 Z& k+ W6 F

4 p) h8 H1 k$ {' l
6 @6 L; w- E( k$ s) o/ j7 z1 I
to get-color
# T- w0 N, |; f1 J3 Y
6 t; g) t6 V7 f1 D/ Kset color blue
8 y" b" D& o# u, b7 Z( j
end
7 J9 ?; O  s+ p* W& z
1 n7 c, |9 ?/ C, ~to poll-class
, y  S0 D9 G1 ~: zend
# C* U7 G( ^9 o. z" U; t* j. O
9 n9 ]9 o5 o5 `to setup-plot18 Y4 S' W7 v* A; k
2 s. \& y; p/ c) S! B
set-current-plot "Trends-of-Local-reputation"
" ^2 R' D! o9 L3 q6 M, s" G4 a& S

1 _+ k0 Y& _1 @4 }, Aset-plot-x-range 0 xmax

- }: P3 O# U4 R/ D. {9 v
' E( M) T& H  |  Nset-plot-y-range 0.0 ymax

/ k* d& `" L% u% l) m5 q1 k2 j; S8 W# [end
  t& p- s; m' ^: J
. {# u1 F' n+ qto setup-plot20 G2 ^' u& x$ Y% F, [2 k& Z
* J3 O% V$ P: \6 m# I5 F
set-current-plot "Trends-of-global-reputation"

) u- s5 E8 m  P$ x9 |& z6 R! ]) q# F/ b
7 H& M" U/ T! P7 y' Oset-plot-x-range 0 xmax
- ?8 `( k/ P; x8 `
! s0 A* ^: x0 N% T7 K* [/ ^
set-plot-y-range 0.0 ymax

! Q- e7 K1 H2 ^8 T* P2 nend
5 H7 |7 J* h& C* U" |; t' q. u) R5 J% F# Y8 A- u' k0 Q5 Q
to setup-plot3
0 S- m, q/ ~: x& A- z
' S& y( W/ @$ S6 @8 J: u( ~% uset-current-plot "Trends-of-credibility"

( T* T, O6 y$ j4 j. q
! @: g* [0 b: [$ xset-plot-x-range 0 xmax

% T) K" \+ l# n( r
4 e/ e" ]4 k3 ?! P9 d" Aset-plot-y-range 0.0 ymax
( m5 T0 S: B+ [
end
2 Q% k, V% r) _3 w; I; v  o9 O, ]- z# R3 k
to do-plots
7 y6 D$ f: a" J# a1 r! qset-current-plot "Trends-of-Local-reputation"
* R3 K  j9 P3 M2 x/ w4 B% uset-current-plot-pen "Honest service"7 L) l. l* C" P: a) c$ i/ l
end
7 {1 F# f' W6 j$ V+ K% f/ G
  o1 P2 S* X; @; x! D[ 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.( F% G4 L" m! i. F; S' R3 Q
% m; A$ R& }5 G2 p, c1 k4 U  M0 H
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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