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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:
" }  f# m/ E' I- \- _! _# |7 |to do-business * c: l$ C3 L5 a
rt random 360
. s1 y$ R' _8 a. J9 N fd 1
* r3 M; Z0 T+ R* J ifelse(other turtles-here != nobody)[. u  s5 d' Y; {. K+ k* M2 Z  }
   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.
8 A# b+ @, z" _+ m. C+ d% K   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
6 z8 P& Y" x4 j( s   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer; {4 u5 g  |: [# d
   set [trade-record-one-len] of self length [trade-record-one] of self  j# y/ [' @4 X; r" r
   set trade-record-current( list (timer) (random money-upper-limit))( T8 q8 U+ T+ L- e9 D% a
2 C2 \% j: n/ P- r+ M; V" M4 G
问题的提示如下:" m: k' u0 T& L) q

3 g" j- s+ b- h1 N5 ]error while turtle 50 running OF in procedure DO-BUSINESS) n# B8 S. t( {6 n% W: L
  called by procedure GO
$ R' W* J- L/ LOF expected input to be a turtle agentset or turtle but got NOBODY instead.
# N; g# O0 ?5 V( ]7 U: v
(halted running of go)0 ?- W9 i# l8 e" K# a/ I4 q
/ f- w* \7 T  U1 c7 r5 c/ y, 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~~/ W' |! Z% W! C( I5 u; ^/ E  W1 u
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! K  w$ N/ _: r1 w- L
globals[+ k) I& Q9 W0 B8 W5 C" p+ L
xmax" K8 x9 @5 u& A& ?' h+ N* c$ P
ymax! B4 m& l+ ?' W. T7 c
global-reputation-list
/ j6 w/ F. r: s8 x5 Y$ M. ]  a
$ \, O0 o* i- \* u8 j( R1 x4 ?  `;;
每一个turtle的全局声誉都存在此LIST( Z2 ]' }1 `3 [) N  y9 G
credibility-list
6 N, w1 n3 i$ B, R- v;;
每一个turtle的评价可信度
4 D/ I# F" `- m$ F3 G) p3 qhonest-service
. Y# g7 P/ C& K9 p; A. H6 bunhonest-service
& w. Q& B# `% x& [2 Goscillation
9 I+ p2 P$ z  K8 S) ?5 Rrand-dynamic  `7 Z: E* N- f. Q- `
]* ^" P, v0 x! k, d6 r0 [7 g: T7 ?! T# d

  S! {- ]# d  Z0 e2 iturtles-own[
9 \- p8 T2 V2 @+ Htrade-record-all
1 I: o/ H: g. C' e;;a list of lists,
trade-record-one组成
0 k; S6 u$ S% I% x4 O1 A9 qtrade-record-one# l1 G2 k5 t, {: ~9 P% ^/ 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0 F4 z5 o' v# W8 v* o' P, A9 e

/ N$ s4 \! q# |% p* w  i8 U$ Q;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
1 w. ^/ E6 o9 h* @; d7 B* otrade-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]
3 F0 h- A2 D2 a, l5 @' ^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list9 r0 l" R( w: O, T
neighbor-total
$ u" R; e. n7 U. C5 ], H6 }, W;;
记录该turtle的邻居节点的数目2 o9 p1 t' B0 u: p/ |
trade-time
3 ?8 V1 T* Y- H0 C;;
当前发生交易的turtle的交易时间
' w6 K; |' `' d8 p4 n$ V1 Yappraise-give9 C0 Q' n8 b1 P# {! t. [$ D; W
;;
当前发生交易时给出的评价
  h7 h4 n  K+ C* U# f; zappraise-receive
, q. D3 }2 x0 \* X! K) [;;
当前发生交易时收到的评价
9 I5 s5 g, V( k  W2 E' d) pappraise-time0 x8 d, M* ~, l2 U% E. U$ u
;;
当前发生交易时的评价时间
1 a, n: Z: J( e6 i: c8 Olocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
, R) L1 I+ }+ N2 mtrade-times-total2 `$ O: _1 k+ j0 S2 C$ V
;;
与当前turtle的交易总次数9 d6 o+ k$ S7 f( f) Q+ a
trade-money-total4 M% s8 i& d' F) \. m! c1 ]0 P* h
;;
与当前turtle的交易总金额
$ t- S1 @, ?3 r* t# y; |8 Ilocal-reputation
3 D* K+ `% u4 k6 k+ ]* zglobal-reputation6 e$ P" ], B+ O' s' s3 X: N; }
credibility0 @2 w6 ]. r5 J+ P4 z, b
;;
评价可信度,每次交易后都需要更新1 x# x$ _- e9 S# `- l$ R
credibility-all, j1 f5 l/ y$ V" Q$ ^2 V
;;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
% q, s% U) a( Q3 E; D! f4 P9 E0 h* Z% C
;;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
# f0 N0 O) P* T+ Icredibility-one" F% }$ a0 t% L, P  K6 {4 @
;;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
3 ~1 r+ C8 s3 A/ ~4 _; wglobal-proportion# L+ n+ \# ]9 h  ?3 B' }
customer# S- O* \5 k! L" ]- u
customer-no: G* d4 \( v  C# i
trust-ok
* p; Y7 p8 T% J2 I. [( b3 ^trade-record-one-len;;trade-record-one的长度, R( [- O0 {$ j: ]
]) L) B( H9 ?0 e- M+ C2 z

, M' {: q0 g1 T/ k/ t1 L* {+ j;;setup procedure& F2 r2 o. P$ h" M9 i

* T' k9 ?' v" L3 p, wto setup
; \4 n( z+ U. W( z
; y  ?2 c: v% x7 p# m6 {+ N( Oca

4 [! ]+ U% J+ L) m! }. F# ^# l( h
/ ]8 o6 B" F0 H* u2 K" uinitialize-settings
8 X  b5 C: O% \; P7 B% w

( W- Q  a# R6 K/ ?. |# V& Xcrt people [setup-turtles]

9 B0 u* |8 A6 o- d4 f  |7 o  u
0 m; W, ^9 Z' Freset-timer
, h$ Y. f: n6 Q: d% Y

- K) C* Z# q" Q1 _0 ipoll-class

0 T  L% |$ H6 S; a% B7 W+ G, U3 w0 s/ R; ]  R4 P. \
setup-plots
4 P3 w0 Z# P  ?1 ]

5 D& x6 L) ]) E# o0 `) [( r) udo-plots

" E1 Y! D- Q8 ]. U6 ]  P$ Xend( @; q7 z' Y1 ~) l8 X; D! b) [3 k6 n
: `3 X8 z0 \! p- i* `. K
to initialize-settings/ T* F3 Z2 I: V3 S2 `

* P/ K* o/ W  P( T" X+ qset global-reputation-list []
. Z; T: \- n% O0 M" e! [: A4 X

; a; F7 N+ T5 F$ y5 _set credibility-list n-values people [0.5]

" P2 Z3 M7 M, d& ?$ ]* J/ t3 ^) u  I
set honest-service 0
$ Z4 _8 V3 i3 H; Y
) J6 E5 V  t, p$ J% I
set unhonest-service 0

, O+ a  l: V& l9 p. d; y5 i3 Y; f- z0 R& ^# {0 e
set oscillation 0

# T$ _' k) u: q  d
* c* ?0 R) s; @4 _5 G: N9 rset rand-dynamic 0

1 P" N: q# w* V; q$ Eend
7 C/ K5 q/ w) w; R5 f% R" u# o7 a5 h- [! I- f) X
to setup-turtles   s5 F2 N0 I7 c  c" @9 h, w
set shape "person"
2 F6 L- q; A/ N+ k' o: jsetxy random-xcor random-ycor  V# u6 E9 U# H* s6 I0 w4 u& g
set trade-record-one []  i! q2 e: W3 Q, k+ Q2 Q1 N
+ x5 |6 `1 @$ u( z2 p& [
set trade-record-all n-values people [(list (? + 1) 0 0)]
- F  V5 w. v% }1 ~7 }$ Q

" z( ^& _5 ^* s  U4 u0 \# B' t, eset trade-record-current []
7 V' C& V8 ^3 U, cset credibility-receive []
) J/ J8 C& B) t9 r" R# n" N" Lset local-reputation 0.52 R8 I+ I! ]4 K2 v$ p
set neighbor-total 03 X! D1 s: l' ^* \
set trade-times-total 09 s/ X5 t0 x% f
set trade-money-total 0, z1 @$ k8 V6 E1 B/ E6 @
set customer nobody, n0 V$ i) W3 Q* U# A" r! w  U
set credibility-all n-values people [creat-credibility]
1 k% a. B: N5 ]4 Hset credibility n-values people [-1]
. \% s: ]% }4 O3 z; m/ m2 l& R1 L% Xget-color
2 `, ^+ o3 o2 o: d! g0 t1 F

! _$ _! q! L7 ]. U5 Pend" N" y& W; `, {" E4 t( }  [  A
  a- x( d; H) @6 O' x% n, _# p: _
to-report creat-credibility
* s* l3 i: Z, Qreport n-values people [0.5]
9 v1 r6 G0 Q+ e. F% N8 ?- eend
$ p) \3 d0 ^7 K/ T* ^5 X
  l. ?: E0 l& F& k+ o& o! ito setup-plots) }6 L) h2 W6 f; n# C* a0 t
5 w2 V4 o8 u, n0 l
set xmax 30
) R+ b" q0 I+ h& Q, ]0 ~% B

4 s4 Z5 H4 u7 j' h$ Uset ymax 1.0

* j4 Y8 t4 l) Y  Z8 d* j. Q3 m; ]. S
clear-all-plots

6 i7 N' N& V7 P+ T2 p* m, I8 d: y/ c/ \# q. U
setup-plot1
$ t+ ~8 o5 r% E
4 ?( u. {4 B0 y3 F- ~* |  m3 z
setup-plot2
2 q/ n* t' p# W
4 s6 x3 o4 ]4 M6 w& D6 ?
setup-plot3
- c; z6 C9 u# `: ?: _) M4 ]
end
" @! q9 @5 c' B5 J2 L" m0 I& J- B: d$ n
;;run time procedures* @+ S/ d9 r3 W1 I
. e  N  V' u* }' x, D0 D' j
to go
' t# g$ K+ V! N2 A& ^/ A7 c' `* _
- Q$ b: Y6 H; X' Pask turtles [do-business]
% k0 G  s8 v) I5 ~& U( d8 N
end
5 D5 [4 Y; [9 ^
( _: y' D  j$ F! Q0 f) t" q2 Eto do-business
( e* t% y- W- x- v" ~

* k) m5 d9 k8 T  O: ]. q  P% d( ^
- H9 F1 }- q, Y6 ?/ c: P/ |rt random 360

! ]% K% B( G# Q% [! ^1 V, |) i- z9 F
fd 1

6 D" P* A; N9 @. h
6 |7 p+ N# I% I0 {4 jifelse(other turtles-here != nobody)[
( G0 {; }: [$ y: g7 b; D9 ]' D+ R
9 w  c& O/ I! F" c( T+ d% B7 I
set customer one-of other turtles-here
+ N+ j( U1 c2 |

4 Z. T/ u4 V" d+ s5 D;; set [customer] of customer myself

' N* g  m! q; l. E) y/ _$ c
  b; K" C& u# V: S) I" L; s# lset [trade-record-one] of self item (([who] of customer) - 1)
2 c6 o1 b4 T9 q/ |# c[trade-record-all]of self, s  O% F" v' C" {! I- m5 B( l
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
/ c$ x; K0 i) l" \! v7 u/ B

8 n7 B6 w% u: L1 d$ N. W, yset [trade-record-one] of customer item (([who] of self) - 1)4 a4 [8 d1 J5 I: E* c, E$ s+ k0 f
[trade-record-all]of customer
( H1 Y: V' u* l; V. E- z$ P
- k4 V% b' V8 I- K* ^3 R' |
set [trade-record-one-len] of self length [trade-record-one] of self

5 W9 \" }  X" M. P5 T  n# C" A9 `6 i: ~' Y' p- L: p5 G( O
set trade-record-current( list (timer) (random money-upper-limit))

8 X0 L+ n6 P8 {7 k1 G) B9 e( n7 z$ H. s5 u
ask self [do-trust]# L1 C) m, S4 u2 Q  V
;;
先求ij的信任度
: s6 u6 a. p, O( \- K6 o' s
: q* j/ |% B9 T0 s' |if ([trust-ok] of self)
4 Z5 D! W, F- E;;
根据ij的信任度来决定是否与j进行交易[
5 }- |+ H' d" f# ]; eask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself6 M3 n" V- {% c. ?

: _, C3 w( R8 G* ]4 `8 M- G[

* W- E. {. b+ B) g0 [: l" v+ H' M5 Z3 n4 q
do-trade
$ J+ m$ s. f5 [2 f& E/ p6 y9 ~6 u

7 X+ M: m% ~3 G8 ~, ?! ^+ C3 Oupdate-credibility-ijl
4 v0 V5 I5 p7 u. n
0 x' e, T& G$ x# ?6 ?2 i! y  g
update-credibility-list
9 _' a$ g/ Y( l: E" u! k' T, [

' q1 w. r  {( f; y, y" W- i7 _+ c4 i- L8 \* o
update-global-reputation-list
4 A* y' Q& m) {8 P+ E( p

- `3 e# C2 Y& a! vpoll-class
6 E5 o8 c& M! o

. R, r5 U( Z9 Z. A7 Z; @get-color
+ A, [  w" Q4 |( M6 ~
8 b8 P+ W. R2 ?4 [! Y' Q$ v
]]
# {, Q( D  w5 A0 ^6 J: }" s9 x5 g" I& M) [7 R
;;
如果所得的信任度满足条件,则进行交易- y# ?- o& o! A5 M* a

7 t2 A5 W! ]/ W) s2 m! s[

6 r: X! y) C$ q3 N* ?+ R/ B6 N6 K: u0 Z; K2 t  I
rt random 360

: P! k- [5 T4 j3 l8 M$ G( n0 r
; g$ C5 K4 O3 H- H1 l$ p9 V1 n# Jfd 1

1 K& U1 H7 Q7 b/ P) h' |
' Z/ V7 ~8 \: j2 ~! ~0 U]
7 e& R$ ^1 L0 W  ~: z  L

& O- \3 _3 P4 v9 c" p% |7 X, Qend
- P$ t6 s3 T  @3 e0 F% d4 B
4 u, w4 i* J8 ~4 s% V8 u5 J
to do-trust
. f/ R1 @8 ?2 q7 j8 V* m- Tset trust-ok False5 q- S% H$ k+ ?* N/ b7 _9 w

$ [1 K+ e3 Y5 q7 F# T1 t  w+ }6 j

9 i. Z$ Y/ V6 Q8 vlet max-trade-times 0/ C2 e( Q8 `* S$ f) e
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
$ O5 G2 w& C$ k( Alet max-trade-money 0/ A4 o; y  |. o0 p$ R: r
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
5 M! h/ Y) g3 c2 ~4 t0 L5 glet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
( v/ Z: u2 |5 k5 S% \0 t
% ?* o1 S% r2 Q2 M

! u9 O: g3 ^  V& }  F: G2 Sget-global-proportion$ L! {5 o: V5 I: D0 r
let trust-value; |0 Y) ]- y7 E: X3 V. a* L6 ~; [
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)

) _" F5 \( S% f  }! b1 b" Hif(trust-value > trade-trust-value)
' ~4 _* t1 k9 s6 ^% \. a[set trust-ok true]7 m3 y0 E8 P1 a" I' z, v( @+ o
end3 \2 r& J3 |- O2 ^9 f

/ W- v4 L5 C+ [  `: L; t; P8 e4 Oto get-global-proportion' j0 P: a3 \+ q2 D; V
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)+ ]' G) d( t" [7 o6 N5 _6 }
[set global-proportion 0]
4 V# P$ k2 A  V1 c  g% o! E: }[let i 0
: y& D. D3 ]0 L, `let sum-money 0, l$ c) Z- N" V9 d
while[ i < people]8 w$ T3 Q4 F, f* I! m; \( _
[
# F0 ?2 T- K) v+ f  Fif( length (item i, h7 x% y5 @$ \- O/ Q
[trade-record-all] of customer) > 3 )

/ l8 j' g5 _7 [[
; V! W1 z8 f% p. }& p9 Sset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
' J4 |8 y1 H6 X9 s+ E0 w]
9 w/ m. P2 X# B! e% V% P]$ e3 T9 q! y, y% @# Y. G
let j 0' i, l/ q# J6 R: Q5 P2 R( m
let note 0
' J: r- r$ s" `# d& twhile[ j < people]  S) _' }5 [- e! G# J- U
[
( L) S7 l1 V# d; `, gif( length (item i
6 f- a, Z, T* H) e2 p6 x[trade-record-all] of customer) > 3 )
4 c" V% U0 V& D
[
0 U6 ?( P1 X" d- _; r; A, ]ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)4 Y( h! k4 p6 ?3 F
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
" \0 C. s' a/ y5 V[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]* {2 O: g/ A, C; d) B7 P1 ?
]# H& B5 P& p$ C8 \
]
) U  _2 Y5 n" N7 D9 G% wset global-proportion note
# G/ V, w8 h( R3 [+ d6 h]- ~7 C# _' ]' f) h2 F- W& i
end
( Q" O  j/ n" G# D
1 F7 F. d$ g' \" uto do-trade0 E3 g; ~" e# V4 B' M! q
;;
这个过程实际上是给双方作出评价的过程
* ]! N" D4 A4 Bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价2 j3 J# N8 j6 f; f
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价& }$ L7 x/ r2 ~
set trade-record-current lput(timer) trade-record-current2 T3 R7 a6 C$ w+ @% u  D
;;
评价时间
: Z8 [: A. X$ `* w/ rask myself [3 H2 n/ L( T4 g" J4 i6 E  a- ?
update-local-reputation
7 ^0 m( V, B+ `$ s( B2 Qset trade-record-current lput([local-reputation] of myself) trade-record-current7 f! I% l4 K' r0 M0 Z" ~
]- @0 H7 J9 ?* K4 p& H2 k; p% f- o
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
" Q3 l3 f1 g  J/ j;;
将此次交易的记录加入到trade-record-one( q* [" o, @; I3 b) ?
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)! B5 Y: O' Z( z5 p% h7 l2 k# Z
let note (item 2 trade-record-current )
6 @( u7 D9 z2 |, o0 z+ r. z$ {set trade-record-current
% w" x  Y, m/ N- c& k/ L(replace-item 2 trade-record-current (item 3 trade-record-current))

2 M% y# g, j# r; q! g& Xset trade-record-current% B8 T5 ?2 o0 i. [7 s( i
(replace-item 3 trade-record-current note), S1 N) q' n9 z- m8 \' x% H
, O6 N& ?/ S( |8 W6 K8 W+ z' _' b
) o0 q; n4 P7 W# O, [& ^; t1 {' ]
ask customer [
& u0 O' U( [% y& d- d) ?update-local-reputation
( k/ {% d; U1 c# x' s0 @3 Yset trade-record-current
4 d' N1 K- w, Y2 \1 r! X(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
9 f6 u4 V; l4 G: g; c  _6 m; |
]9 j; k0 s" d' M4 f, k6 u

: X& A9 q% e" |$ f3 M* {" z9 h

9 T( C0 w% i3 J% E' mset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
; E; b9 R+ i, o5 o- V* [

$ e/ Y6 B, _1 G" Y7 cset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
& b$ _6 |! g0 H0 K8 D( K;;
将此次交易的记录加入到customertrade-record-all
! s3 k) S& v. [2 c# x  H# ]end
, m7 h( Q  N) X' H$ _: {" R8 w6 T' P" o( {, R/ @% I+ ?3 I8 G/ d
to update-local-reputation
& a1 a$ o  K2 D' j- p3 u1 Lset [trade-record-one-len] of myself length [trade-record-one] of myself! M: P) x6 Q- ^& j

! P) W! `9 O" O# d( \1 Q. f. B. e- N7 U
;;if [trade-record-one-len] of myself > 3
( d. q5 j4 x/ J1 b+ S6 v. D, [6 y
update-neighbor-total
+ h  N) P4 z4 f! K$ a% Z+ z0 u;;
更新邻居节点的数目,在此进行$ I1 j' p2 D# V1 h. F6 Y6 |& `3 C
let i 3
3 q- U1 n5 m  d& r; L  R& |3 `* d' E# q+ Mlet sum-time 03 Y: t8 ]1 G) T7 l% l. x, ]
while[i < [trade-record-one-len] of myself]
& e1 E/ \% s: y6 O' r7 t[" x+ w4 T' w& F; J: f
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )2 S$ c& W, r3 S- C% ^% V
set i
8 w3 ]8 J% W; m( f( i + 1)
8 y( k1 S; i% V4 H
]
6 d3 Z; Z; F; c  H, L# Glet j 3% c: z2 N: [' T. z5 u9 e; a0 }2 [& U
let sum-money 0! ]" B* s6 Y0 o, ~! {$ K9 s
while[j < [trade-record-one-len] of myself], ~. i4 }$ L% \  I3 F
[; C" \  _- ^3 u, o" n' W
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)( _" y: Y. W3 W* n6 h' H7 j
set j
& T, d: ?$ w! t( j + 1)
# H9 k% J. p* @
]
& |5 _3 ~: m- {2 |let k 3# ~5 x6 b6 T5 F; E5 |. f8 f0 R
let power 0( J. k1 w8 c* J; S
let local 0
  W4 c! c) t4 `9 f4 k* z. |3 [. S- bwhile [k <[trade-record-one-len] of myself]
& k# }- }2 Y# T# O1 f0 l[
5 k, o% y7 m5 |4 bset local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
; M/ v$ z# M* ^set k (k + 1)
2 @6 E# J3 y5 ?1 i3 g; g2 P]6 q4 e2 O- _) k8 L
set [local-reputation] of myself (local)) k5 S, \' a1 x' x
end
" U+ O$ {- T9 Y- F  m4 b5 e2 R; }; i. Z
to update-neighbor-total" w; T  E( P# V- B$ d/ E4 L, u3 A
- }1 V! }4 V2 X1 r5 W/ s  I
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
$ c% z3 G6 k' s0 v  Q# K# u+ n5 u4 h+ }/ W
" v# i* l: K& n" A8 g" F2 r% A
end
/ [$ _( F7 z) t7 P9 M7 x
+ s! L9 A) |, Wto update-credibility-ijl ) p- Z8 }1 o  L* j7 j- a0 U8 H

% T! H. v; I; _& K! J+ n! `;;
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。! _. @: C+ ]) K' C8 ?7 y# J1 ]3 v
let l 07 f6 c+ G* n3 I# r
while[ l < people ], A, ?  |. ~5 m2 h
;;
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: j& s* f8 r) K8 k+ J- F  d$ ~2 D
[
& O; J: u- c' Q# Z/ Clet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
" u- y2 y9 x/ j% ^) m7 [if (trade-record-one-j-l-len > 3)& @" U0 j5 H8 ?& R
[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
9 G- l) E, h* ^; Hlet i 3
, Q" r) l8 l+ h/ k: R! ^let sum-time 09 r2 X+ n0 ^2 w2 t8 C
while[i < trade-record-one-len]2 K4 ?5 q) S7 H  h/ W$ J5 a* K( `
[
  F2 e2 B9 V1 g. t4 o; A4 Lset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )% }5 @# t' u5 r% S8 t5 I" X
set i; v0 ?/ c) ?% [: n4 Q
( i + 1)

1 f' G5 U  M  ^, `/ J& u0 h9 V% ~5 Z]  o3 W; X* D. @0 p0 F: i. b% h2 h
let credibility-i-j-l 02 U7 g' f( ^4 r+ Z! K
;;i
评价(jjl的评价)
  V( z/ Z1 N% ]/ i3 X* ilet j 3
: W" Q* b7 z! N4 j6 {+ ^let k 4
' l3 S& ]4 m. ]/ Kwhile[j < trade-record-one-len]/ z# p1 n+ k5 Q8 n
[2 M1 [; x) S+ U) d
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( Z1 S/ I% O: ?) S+ Y  I( B
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)
! F; l- @: ]+ H) p: Lset j
- u' M7 a. \7 O6 J( j + 1)
4 I# D# X; ~7 C' K/ f8 @& X
]
5 U0 y. p: w% V- bset [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 ))  `' |' A0 Q% c3 }3 P5 u

1 a1 A: l( m4 S/ `1 U
, x% x+ m+ e- d! g) Y5 u5 M
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
) F0 F* [4 r2 X7 `5 [! C;;
及时更新il的评价质量的评价
' \! V  @) m% c6 f; `set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
4 A( o# k' n, I% u# X$ }) nset l (l + 1)
( H9 t; b/ `, o! z. D2 S]
' B6 P# ?3 c( ?2 h" u0 Yend
8 ?. Z- c7 D; X- l: B
3 ^8 C0 z" w1 x9 V$ Tto update-credibility-list) V9 c" g7 G' X
let i 0
6 X9 {/ D; M$ b2 I8 ^. A' i& `( m5 bwhile[i < people], s; @" t! x7 L# |5 S
[0 R: }/ y6 x# q/ ^8 y. ]$ S. y1 b
let j 0! c' p* l1 m( ^( G
let note 0  T# I! O$ g0 _' v( @
let k 0
2 i' z" X: f1 E4 A# N" S9 ]2 x! F7 z$ X;;
计作出过评价的邻居节点的数目5 \9 [+ \  M5 k7 |9 B
while[j < people]
, Y: U5 G, b& V# Y[
, S4 E2 C5 X4 f9 G6 `( |if (item j( [credibility] of turtle (i + 1)) != -1)8 u. H4 O$ r# ]% D) k. B: s
;;
判断是否给本turtle的评价质量做出过评价的节点$ m$ o+ p. ]; Y8 ]3 }! j; R" G
[set note (note + item j ([credibility]of turtle (i + 1)))3 f# X. w9 B! {8 ~; N8 v
;;*(exp (-(people - 2)))/(people - 2))]
* r; M. P' {' |! a; |8 L1 [
set k (k + 1)
* A* C2 |' o) Y/ d% Q# a8 j7 G& ]% p]
; g) _8 c( M; w( zset j (j + 1)( ^0 h! M- X2 `4 `0 n
]+ ]1 s0 {7 p6 I6 ]* U
set note (note *(exp (- (1 / k)))/ k)
- X4 ~. ^" r% ]% |, }7 |9 O  yset credibility-list (replace-item i credibility-list note)2 ]6 G7 \! M/ n( c4 j
set i (i + 1). w2 Z7 O9 H" U- f$ V7 k
]
$ {2 v$ Q8 b6 |8 S1 R* N6 N6 Jend
" v, T( J% I& f5 N% G) T1 H( A( G% @, P# b
to update-global-reputation-list. H- Q4 J1 e$ H  M8 _3 e& M0 x
let j 0! K( R9 V1 I/ {2 f
while[j < people]* Y1 e( l* F% ^2 Z: V
[
& r/ m! C6 i0 d. Klet new 0! E- w. X0 V3 V" b( S! x
;;
暂存新的一个全局声誉6 m9 v6 Y) n, R/ N
let i 0/ v7 O2 i+ p+ J' K4 c( X3 ?
let sum-money 0
* R$ T+ g* e+ \$ h. w4 ~9 Blet credibility-money 0$ [! o0 z2 w7 B6 k8 {. g, o
while [i < people]2 I, G9 t/ r2 j8 A0 t
[
: d* ]1 m. L5 D3 S4 u" W* Eset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
, K# A9 N3 l% wset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
( `2 F" @/ R0 pset i (i + 1)% X  e' J: V. [. {
]3 k9 x* \! B, i: h, }
let k 0
8 R/ ]9 {8 E# j8 S' r3 t2 clet new1 0
! \! `8 F* p$ z4 q7 o' fwhile [k < people]' R+ _, {) \, i1 z: O  D
[
, C- {) [" C6 x: 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)
) I1 {7 \4 O  r: oset k (k + 1)
2 D; T5 f& K$ y! a2 []
& V1 O6 o6 |; H, n' |9 ]! F) Cset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
9 F1 O* O' Y1 n0 h0 `; z' j8 Zset global-reputation-list (replace-item j global-reputation-list new)3 M" D4 P4 I% I; z4 b; `
set j (j + 1)
' B: g# H0 q" M6 t+ i6 []/ J6 b: `  Y- b7 `
end
5 M: E+ ~- Q: q" W: G* T3 i# g3 h' t
8 a( [  x8 b" n" j! M5 p: M- w2 C
* c# d% ]# t. R7 T; V0 p9 c! w( Y
to get-color
" t" B$ F  b1 V$ {: A# V$ Y
# M6 O, b) C; o! j8 P' M" eset color blue

4 p/ |( K& E  J' P1 u$ qend
, x" W# U/ |, u! O
8 q9 |' p& F" [0 dto poll-class
, n, i3 Y3 c9 r7 x% W  hend  g/ I. M# c. {( Q  k) ^) h+ \# W
" E& }. c. ]/ G  v1 W7 L
to setup-plot1
  w% w9 E' N, ^; q
& p  m) _) i, d1 K- Xset-current-plot "Trends-of-Local-reputation"
& Z7 _0 T" f" C3 k! w' R: a! I

% z6 U* ~; Z- }) I2 r% [" H2 ?2 v4 b! nset-plot-x-range 0 xmax

* {% i. {$ Z' `7 z* [' C5 e1 w. k5 h  @3 \5 u1 i
set-plot-y-range 0.0 ymax

! ?/ o4 n  e4 v+ F6 F- x4 }& tend
0 k4 ~/ |- P+ C- C; n  \0 t3 r0 a& b
8 X# g6 Z4 o& e1 O" h- Bto setup-plot2
, n$ t: m( m8 U# N
7 ^7 i3 a' Q# l# mset-current-plot "Trends-of-global-reputation"
4 z+ G% i4 O. t5 y1 D& U

1 O: O7 w9 K1 v8 M# X# E; `$ r' Dset-plot-x-range 0 xmax
4 _9 T! n2 h! J0 m+ ?8 M7 m' m
+ d/ k& G. C, i0 i2 |
set-plot-y-range 0.0 ymax

- ]$ E9 o3 r9 Q  e5 `+ e8 [9 u* eend7 E% D# F+ n9 X6 V6 m1 {4 ]

+ A  g4 q: h, J; ~/ B1 ?9 _to setup-plot3" v5 l9 g/ i7 i8 L' Z( l3 W
0 X6 e( U; R- z9 h4 p# h) V+ k' L" Q
set-current-plot "Trends-of-credibility"
. E7 }6 r( w+ f- p$ I$ _, _
- V4 o" d! h: ^0 G# `' c1 ]
set-plot-x-range 0 xmax
- N2 u9 z( {; o

& {" m4 ?, `6 [, zset-plot-y-range 0.0 ymax
0 ]6 Q- T: O1 i% G& m: ~, I
end/ q- ]0 k  t/ M. m1 @  X4 p$ q

- c+ b# ^0 r' }8 Zto do-plots
; {( w, N7 h/ }, C- Jset-current-plot "Trends-of-Local-reputation"
+ y/ A" O, ~. A6 O7 b# hset-current-plot-pen "Honest service"4 l* H0 z6 A4 I1 T
end
- |: f  S3 U7 A& ^% V: W" e  C! |
. D. }! y% y6 ^$ }; R2 X[ 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.
3 t! ^  G3 @% \  u/ m. c* x' X# P$ w: {
) o; _% _% U0 ?- @$ q# A0 f$ m) N2 F9 |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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