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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:% {, A7 |  }' c* f
to do-business 3 [3 e9 g3 F6 s7 I! c" I# G
rt random 3604 |2 ?( w# F" T: J
fd 16 H/ g2 A% }, F- j4 B
ifelse(other turtles-here != nobody)[8 ?8 M0 f! o  @
   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.; o' g6 e% D- i5 o8 m
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    , A9 j+ b7 k6 W. q1 o" v
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer! T+ t4 w8 R6 @/ w) }/ a4 K
   set [trade-record-one-len] of self length [trade-record-one] of self1 s: `8 P. Z* r+ ^$ w4 G2 p  T( ?
   set trade-record-current( list (timer) (random money-upper-limit))1 J. F8 s" F. _  X3 g, x
: f; H4 b3 r7 C( H
问题的提示如下:2 M+ d. B7 A5 _% a/ L" ]  |' |: S

$ f/ x5 q5 q& o/ Z. D$ H2 p4 _5 terror while turtle 50 running OF in procedure DO-BUSINESS
9 p7 z( _9 [; u. y- j" K  called by procedure GO
9 n* ^$ ~8 \- V  POF expected input to be a turtle agentset or turtle but got NOBODY instead.6 v8 ^- n1 B' M' q, W, n
(halted running of go)
" _4 l; U  Z% H3 Q( n
; m  ]( v2 O  p' J1 _4 j  G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~~, s1 s- u! q/ I; G4 g8 B3 D# C
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7 H' ]4 a8 Y% H4 _
globals[& P" D, g( c2 p3 N% [. D& o
xmax  M7 p; o/ h7 V
ymax
9 `( N3 ]( ?  @! h- Hglobal-reputation-list8 c6 E1 p+ I7 j4 `2 p# P: z
- Z  `1 U: U  F. Q8 v. G9 X  K5 u
;;
每一个turtle的全局声誉都存在此LIST
2 n7 P3 V* h9 h% h" @credibility-list
1 p! l" I8 F. u1 r. X;;
每一个turtle的评价可信度( N* v4 ?: E9 U  t4 N% ^" k
honest-service/ K& m. n6 P7 O
unhonest-service
; F) }. n! d" ~oscillation
/ e2 x# E4 o. t# J9 o2 {  @2 ?0 Yrand-dynamic
0 q, ]- ^1 R1 \' x: f% n]
3 k9 h" f4 a; _, M6 A3 {& B9 y5 o( [
turtles-own[% a$ D+ Q4 n0 Z# {+ j7 a% `/ N3 f  x
trade-record-all/ t0 B: _6 Y: |3 P% e4 d
;;a list of lists,
trade-record-one组成
8 H7 b# {- d6 Y( f0 U9 l! r! Mtrade-record-one" i8 G2 |: s) i& g. x/ M1 [
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
3 G: O& i- M. C
9 C) D, j! B( _* H( s;;[
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]]  g7 M! o0 G, Z9 s% K
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]
8 }8 C+ D9 S+ D1 ?6 `( Ycredibility-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) _7 N" {* T% u2 V& l+ \
neighbor-total
- x( v& f$ C6 b- G+ z3 q' n# U4 M;;
记录该turtle的邻居节点的数目
  F& A. l4 m7 ~trade-time
+ _# p: c* u- G0 h$ A. N* u;;
当前发生交易的turtle的交易时间
/ P: k/ n6 D, l1 r& Vappraise-give
* M( L5 `" k0 _+ h, I;;
当前发生交易时给出的评价
0 f0 D: n/ n. Y- Bappraise-receive
" @5 p, _. O+ s& w4 B;;
当前发生交易时收到的评价
4 V# ?( w- ^8 H" ^; J! ^appraise-time! U& |# @  v, [+ d
;;
当前发生交易时的评价时间
9 j* H& }; g. l3 }$ S) c1 ^: nlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
8 m5 P' m# T( x. D2 C& C+ `( wtrade-times-total
4 B- v3 E" F  }; G& a;;
与当前turtle的交易总次数
" a, u7 z; v5 C+ ~trade-money-total
& {( F  `9 ]% h* R" g  Q7 O2 |1 z;;
与当前turtle的交易总金额: N! L! W$ {" x3 L; ^/ f: M" j5 s
local-reputation
1 @1 @  u/ N3 w" hglobal-reputation  G! p. a! o" V# h9 g: x# ?3 a
credibility
( t; _/ v- l* r% I;;
评价可信度,每次交易后都需要更新" I. A- C* s" @2 \9 Z9 K
credibility-all
3 D0 t& W, h! U" a" |0 a;;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
( }0 C2 [) |% p" J! X" {3 j1 ~  s1 v/ K# B
;;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 ]( ~: S) |3 {! k7 Kcredibility-one
" E& w6 F+ Y) f( w" T;;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$ }4 ?9 z% C- C& e+ y3 v
global-proportion
2 _$ E% U; j( _. H4 |( Ocustomer- U, z' |; M0 C6 I# T% n. O* O
customer-no, U# w0 N  B  g" B' X
trust-ok" l: c8 T  ]9 O6 K
trade-record-one-len;;trade-record-one的长度
/ T; H6 k' Y# O]
4 b# c  @) n5 C  i. V
. j# d, B# `4 S* G5 `" S  N8 n;;setup procedure( z7 E0 _$ d3 g& Q" w* i+ x

2 T1 P3 F1 ~8 d4 w. G1 k" B6 j! Qto setup4 z. v" _& F$ B) s2 G% _. \

6 a9 r# A8 g' z! L+ t  yca
1 E! Y2 H& X. D- v) ?4 Q% m7 c
# Q: a$ \. U: g; Q
initialize-settings
: q5 I, s  `5 X' K
( @- a7 r" H1 n7 v6 d
crt people [setup-turtles]

+ Y& A6 b. Z1 A! ?/ {+ [7 x( d: t
3 u7 ~# |8 b" f9 j3 T; O) qreset-timer
" `- P# R% K' o9 ^1 b- ~" B
8 p3 z' Q: o3 C" c
poll-class
( e' l! C0 S7 Q" }$ _3 M& _

- \! {! |  s* J; ]setup-plots

9 a; ~0 K1 d% |1 R: [# S1 m; ]0 r6 r% \5 m1 C* ^7 n# n/ ^
do-plots
, N) B8 |( U/ |- @
end* U. Y) Y: g1 ]  }: L
4 B0 C* t8 C# G$ y! g1 y4 y* \
to initialize-settings2 J$ q0 S* ^1 K. ~2 U3 o

8 x1 ]: Q$ o: m  t8 l; Lset global-reputation-list []

# e6 {2 \+ S) Q# Q' d
% s+ w7 C! G: D6 _% h5 R, b9 Wset credibility-list n-values people [0.5]

, S: U5 S. I7 H
4 c& m/ z3 W5 Y. f* w( kset honest-service 0
$ P; a# @! }9 a! r" J3 W

" J2 O5 P) X! b/ c' k- w. S; mset unhonest-service 0
  i6 V9 C/ x' E, t
: e- j' n+ N6 J; o7 b( C. `
set oscillation 0
8 x, H5 r" E, ?$ m2 p

. t* H/ B8 p5 k$ ?. Kset rand-dynamic 0

2 S: G' j% p, c& V1 Zend
- ^2 v5 W0 J8 K5 u: }9 ]( ?: k
  r: H" y( w4 f! M5 bto setup-turtles ! t3 Y6 K/ M1 _% V
set shape "person"
  U5 X, w1 ^1 n2 }4 hsetxy random-xcor random-ycor
( ^* N8 Q, I+ c  G7 H! pset trade-record-one []5 i1 q5 V+ P4 f2 e( L
! [: h2 F: f: r6 _
set trade-record-all n-values people [(list (? + 1) 0 0)]
" b# r( _, n6 S4 c- o" t2 o" X* Q

: j# e! h2 u4 @- hset trade-record-current [], @7 D' Y" }: l1 w, I
set credibility-receive []
2 I* H: r  ~! m8 r7 N0 y9 z  Lset local-reputation 0.5$ |0 W  x% P! D) P, w7 C$ `# P% N9 b$ a
set neighbor-total 03 ]( L$ A) l' r: s4 q
set trade-times-total 0
! k2 }$ m- {, Oset trade-money-total 0
; g+ T7 L- V5 b5 K$ r% vset customer nobody+ q/ e5 S* O! z$ T5 v/ f
set credibility-all n-values people [creat-credibility]9 }  o  u4 s# I8 v: r
set credibility n-values people [-1]: T0 f3 {. s. y5 G, b
get-color9 w' G3 c/ q& M
8 f# g/ b- H( Q- [' S9 H1 \" _; l
end
( y% ^' i  S8 v* v- ~  q' O& B& L9 C8 Q! u8 n; j
to-report creat-credibility
. m5 b# y  r. r4 n, ^4 z4 Vreport n-values people [0.5]* c4 ~. l' q) C* V
end
+ }& e+ O. A7 V6 }! q" x
3 [$ G, u' J1 t% L# B# S: N! Wto setup-plots* a' j- V( b: H. R5 d

) P. r) B+ ^  n0 `* U2 oset xmax 30

; g. D' S! ]& J# q, s% G- x& x9 Y/ N( ~2 w5 U: r, X
set ymax 1.0
; u5 d; o3 `3 [8 Z+ _1 n

2 f& z4 q1 q! f7 ?clear-all-plots
: c' }. u" _$ T6 o% N1 X

* A2 a( c; H# {6 b( z! csetup-plot1
) k/ c* s( p8 [8 ~# d

* ]; J2 V7 k' E( k8 j& lsetup-plot2
4 x* N9 M; p# Q6 p3 O- m
: S: z9 v. M7 W: W& ]; T/ Z
setup-plot3
6 b2 u. p5 w& }  B- O
end
; z  I, e( ^7 K+ l
: C; ^& _' O& {4 O! @# J;;run time procedures
7 F( Y" X, K2 a/ O* r: {' L
( [! b- K0 L1 [; o; V- o7 nto go! ~. c% D% _: b7 n' Q

- Y3 ^0 D) R' Z2 x+ ^8 G" u) Gask turtles [do-business]
  w+ b3 r8 ~( k8 v2 ?: l! Y- z
end
4 L4 d% a0 u/ c" }
% m; J" P1 ~+ J  V% \2 T* bto do-business
) M. o- T6 \9 ?; T/ [

4 D: t3 R" [7 k& \' V" f; Q5 f# ]* D2 g
rt random 360
, T- h; e  ^0 D1 {3 _9 m2 v9 w

: H" e! I7 u8 g3 ^8 ?9 wfd 1

1 G& r4 Q* o/ D- W# o2 U( n& z' K/ o  k
ifelse(other turtles-here != nobody)[

- ?$ e" M& n' O( O. K6 `
8 B4 C7 t! q0 B% E; u/ Z! Kset customer one-of other turtles-here

6 ^' \' j8 q5 B' b0 T
4 t% o  a* r  \% E5 \* h  n; D;; set [customer] of customer myself
, I6 W9 M2 S7 T% b8 i7 C/ s1 X

* {1 N; @3 k) f* u: R+ \" sset [trade-record-one] of self item (([who] of customer) - 1)
) @+ q6 F0 ~, @8 I' @, ~+ h! ?[trade-record-all]of self1 Q0 ^5 W6 |, B, ?. W  z4 Y5 o3 }
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
2 i% O7 {  a. \, T2 P: d9 d  S

% i* X7 \4 f( k% c* \set [trade-record-one] of customer item (([who] of self) - 1)
6 Z$ c* h+ m+ ]# B. o[trade-record-all]of customer
8 j; B# j! a6 i- M1 t
% p8 @% C+ @. D. \9 t
set [trade-record-one-len] of self length [trade-record-one] of self

7 p: `3 z& ^# Q( ]+ @. S& x7 b) I8 O# S4 _  Z7 ]# H5 y
set trade-record-current( list (timer) (random money-upper-limit))

3 W7 i/ c/ ?; s. C& k/ C* [. q- o3 Y7 B
/ s3 y& N1 H; R! q0 b; yask self [do-trust]
. y" ]" x/ a( a( ^! l% f;;
先求ij的信任度
! z$ ~, I! h8 N
+ }! o/ M3 `5 ^- ]if ([trust-ok] of self), h% q, u. r* `1 Q: z" J* m2 l
;;
根据ij的信任度来决定是否与j进行交易[2 a. y  `/ y3 H4 U
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
0 q' P: W: N; @6 H
0 d, \: ~+ h0 }- A& s[

" Q- P# o' A! S2 ^! C. l7 g+ O% O; d) \7 N/ J
do-trade
& k1 p7 [; |( n0 B: `- x# `

1 @. t5 O, o/ w9 J0 Pupdate-credibility-ijl
! N  W  i" r* |% ?
  E$ M- C2 [, P5 I% p) ]
update-credibility-list! ~# i' L- y8 B! ^0 _' L6 g/ Y/ T
" y* c+ N& m+ S# Y5 D7 E- T
, r" `9 i7 ?/ |, a0 ], c$ Z! O
update-global-reputation-list

; Q) x2 S6 M* K/ K# V: {3 Q+ y8 w+ B! S
poll-class

7 \" \  a) U- g& v& W
; e" H- G& ~) m7 k: `8 Yget-color
0 _, C! r5 ?0 q* E  E# y% P% N

9 v( J; H: t6 L: h]]! x8 t6 `9 M; K9 V+ L$ r

3 _# W6 Y( S8 T; _0 z, }9 j1 E;;
如果所得的信任度满足条件,则进行交易
  `9 I6 V* t2 d
% u0 Y* I5 {. u# K- X' {[
9 _4 X2 F2 G& Q- z; ~, [
2 N$ ^% l5 g+ s" w% b- @* F: T; Q
rt random 360

6 v$ ]- s8 ]' V. v* r, E
$ N6 W7 F! N# K  e' h# `* }3 O. Afd 1

0 r9 G2 y" z: m; n& G8 v2 t+ S/ P+ b+ {9 d5 Q1 Z0 D. }
]
( h( m" U- m* q1 l* ^
# t" A3 ~/ |' K% }* ?& T
end

) {4 E3 L- R" n: d  `9 M! V1 ^. R, {# I; T* E
to do-trust 3 B0 Y3 R" w. U4 K
set trust-ok False
7 p( t: ~$ M6 N- K* ~6 `+ W. o1 `0 }
1 e* F# R0 V1 _. b$ Y
let max-trade-times 0
. c6 H! b& z$ Fforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]7 q% z9 h6 n* [- }
let max-trade-money 0
3 j, n0 f- Q& ]foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
- Z$ W9 H) R4 N* q3 flet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
) V5 C! L  I$ ]  c( v/ ?  V0 d* j4 b6 C7 q+ P

5 K1 o2 l+ p; ]  }" rget-global-proportion
3 g( S# a. ?0 A* N7 [let trust-value
; }' F8 g, L3 y- V0 P% `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)
) V* |5 d- E1 n
if(trust-value > trade-trust-value)
+ H3 D8 F* ~, M9 w& l. y/ v2 Y6 S[set trust-ok true]
9 N+ }3 o: y: J3 z# G6 U1 Eend
3 \0 \& w' X0 ^. M+ H
1 E7 [  U1 }# a0 sto get-global-proportion+ Y' N0 w8 I1 A- ^7 u
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)& U- G3 [, a4 W0 o1 y3 o
[set global-proportion 0]% |' s. u+ m# e6 z, M2 n4 V  |0 K0 e( I
[let i 0
8 R( Q0 @+ j, L6 x# K5 Y6 w$ }- r2 rlet sum-money 0
1 c, k% |' o2 @2 {+ ~" Kwhile[ i < people]
; F. G8 N% c6 q1 y& `, S$ X[
- W5 m9 D2 s0 u& Nif( length (item i" L: k% y" D' T% D: I
[trade-record-all] of customer) > 3 )
- M& Y" B, ]" v  Y) B. S
[) A, S/ J1 S( f3 P/ q) m* g& E
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))3 }7 f# S* |; n2 `1 }" r/ r( w# `
]6 L9 T, G2 \( C1 h8 i
]: E0 V" o9 g  {; [0 q4 X# N
let j 0
- m9 G' j0 G: ?# ~9 i+ z( T' alet note 0
4 a+ S, n% H# u/ v1 C% {" S3 W" Dwhile[ j < people]
0 ]9 W$ o( j: Q' g, t[# y8 p* d/ J8 ]" z. f
if( length (item i& Y; h) v. ]" m9 K
[trade-record-all] of customer) > 3 )

! {) l5 E4 P5 n: e[' u0 n$ A) Y0 h+ E0 p+ B
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1). ~/ X  \! @5 ^8 W; R
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]0 l; b' a1 I) U9 C- ^# ^2 A
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]" v6 z  f+ p! c
]  y9 h4 M5 U: ~$ F+ ~& E
]7 a9 N3 q) m1 p5 }5 b
set global-proportion note
3 ^& \. p& O6 |* `1 y7 o]/ }) n+ P- N0 y3 e
end
9 s0 F9 v, v4 C/ v$ {. `3 E" w
( S1 v* J" _$ n$ ^$ vto do-trade
' J. a4 }2 c/ M* V. ~) k;;
这个过程实际上是给双方作出评价的过程
$ j) T+ `8 N1 Jset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价# [5 w4 t) ]$ V8 p
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价' ^* E( ]% M( r6 d$ ^! `
set trade-record-current lput(timer) trade-record-current
4 d) ^. Y/ Q; g+ l5 s;;
评价时间
& Q& P7 p' N3 x; A' G  Qask myself [
# a( f" G: C8 a/ pupdate-local-reputation8 g# V; g& W1 j; F
set trade-record-current lput([local-reputation] of myself) trade-record-current% i# n  c. R4 |$ U# e. M# C+ ^
]& @* D, C8 F7 `4 K2 C% O9 C, G
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself" f& w' o1 A* ^
;;
将此次交易的记录加入到trade-record-one
/ M( P" s' `$ ~# n. Y4 @1 dset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)1 a) M/ K6 m5 ^3 q9 q  ^, v
let note (item 2 trade-record-current )1 \" r2 p2 L6 }, ?5 v/ S3 w
set trade-record-current; _1 j# J! C& |# }" A  X; o
(replace-item 2 trade-record-current (item 3 trade-record-current))

1 q% V+ t6 l% C" [set trade-record-current
! x: i2 @- i! k) H" E9 K+ s(replace-item 3 trade-record-current note)5 y9 `; T; g" N% _& ~, S- r
* A# `+ B: L1 P  J4 c) n! n
' {% P0 W+ X% Y4 Y
ask customer [
; X3 {/ r8 v5 d1 n2 W# Lupdate-local-reputation, B0 s6 I; Z- H- L7 m
set trade-record-current6 b9 e0 Q2 y" W. \% L
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
9 `: g+ e. U4 g5 R
]( b; _. P9 \; _/ x5 s
' O# r; x" J$ I* E- D/ X# ?7 \& {
7 p) S' J* N- ~( ~8 ^" a6 Q3 [
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
+ |8 }: Y. W" S7 @, M$ ?( @

' M4 m" k5 L  q# D! \" N0 P' Dset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))1 h8 n- ?% k) y3 W" z4 [
;;
将此次交易的记录加入到customertrade-record-all
( c! |2 m: i1 h# R6 xend
$ M- y; }- ~9 |' K9 T. ^2 Q  K7 Y4 k; H' x# B" z6 a( y8 U2 o2 o: `
to update-local-reputation5 r1 {/ a- _/ m, d* @; W0 g
set [trade-record-one-len] of myself length [trade-record-one] of myself
! X, o  l8 E" q3 Y# g8 b7 ]3 Q" y8 W' k: {
/ A( V  q) X; ^3 A1 n( M5 i) o0 g
;;if [trade-record-one-len] of myself > 3
; C, ]# q3 O! K
update-neighbor-total/ s1 N8 n7 d, D2 W) c& g& W# S9 @
;;
更新邻居节点的数目,在此进行
+ u6 D% [( O; ?2 Qlet i 3$ ]# b! N9 o( |1 L: u$ l
let sum-time 0
+ c( R  v) w; M# a" r. X- Bwhile[i < [trade-record-one-len] of myself]
5 W2 K) g3 z3 F% V1 b; W! e[
: o* q* a; n. j0 _% aset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )* l* }& @5 a7 h' V7 y
set i
! V; I3 u9 `$ Y- u% f9 H5 s% j5 Y( i + 1)

" J8 u- d  i% v1 s]
" |7 U- R  W8 o( j4 y, Vlet j 3& }% }' N0 W. v: M" R
let sum-money 0
4 r! N' U. Z4 g' u5 k8 A* Zwhile[j < [trade-record-one-len] of myself]$ a: l4 e3 |: h/ {
[9 S) M" ~* K0 A, P+ A4 k
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)
7 p" {" |) c: Tset j
3 D+ \2 P; @1 q0 d. X0 u( j + 1)

+ o* a2 i" f9 |]
- X4 a) z, F5 C: e( B" ]6 Y0 flet k 3
# V4 x% f$ V2 T- j  e; M* W! I# clet power 0
- ?( _4 r7 B( P" dlet local 0
+ B* C  P! s$ ~# _  J$ mwhile [k <[trade-record-one-len] of myself]. }6 J* H. r8 ]/ P& z1 m% O% |) D, c
[) P' O1 o! g& H( S
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) 5 Z# A/ [/ c: ]& e' H- p3 h& m: O  L
set k (k + 1); R# A7 c  r0 O1 R
]9 C( w; h/ f( z/ d0 a
set [local-reputation] of myself (local)/ \' S" S7 |% |2 p
end, m+ {2 }+ {) ~& D( `! W
* k/ I6 F9 L+ h3 \/ K5 k) ^
to update-neighbor-total) K. X  d# J( F8 X
* |1 e9 y. \- S* u0 @* ~9 V
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
; i" y# {9 i# J/ `, ]6 q8 v) o1 @3 P) N& j' V9 U1 ]

; p) l# ~- ]3 M5 kend
2 l) `$ x5 U8 e  n1 e4 e0 `
: p; o- {* h  V0 E1 _/ \" wto update-credibility-ijl
! K+ d: o% b" @* F: Z; y6 J6 ~  E+ p
8 P2 }, G# w5 J- a4 _;;
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。1 x4 O/ N  i, D8 j% e* }, R
let l 0
$ q$ q- r4 j3 K, Owhile[ l < people ]$ T$ v# y/ \' i' k3 d
;;
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: p0 ~. g3 S! S
[% V& K( ^) \$ b' ]
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)" M3 b' ]9 F2 `7 D
if (trade-record-one-j-l-len > 3)2 `0 K5 U/ n* T4 K
[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
1 S& R" O5 n9 q/ G! \+ s3 k8 mlet i 34 r, i  p8 ^  a: m. i) D
let sum-time 0$ q. Z0 P; }/ U7 t1 ?) _
while[i < trade-record-one-len]
+ L4 }$ F0 n  R8 T# g" I5 Y[' X8 V' [2 _' a) O7 q" v' T% I7 `& F
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )( U  I' G7 _# P7 V
set i
, R& [# X5 p) x& M5 ?" d+ z( i + 1)

* e* a, e& G* o' V: P) i( p]
* ?% z, I- _/ y1 M; i9 klet credibility-i-j-l 0
2 D1 f! u9 r+ G7 _- k$ y8 T  B, s;;i
评价(jjl的评价), g' @" o7 C! l- z: D- c
let j 39 ^" z9 O; w* M( ], `. F. Q0 Q, g
let k 4
2 d- T5 u% E- M/ o1 Q) Dwhile[j < trade-record-one-len]+ Y4 E4 c* K! C2 m* j% E
[
8 i! o: e) J+ v  d  s' zwhile [((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
% q  Y; d6 m# o' \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), h4 `2 a. p& L. Q
set j
" s  K3 x; [. h- z% g( j + 1)

; H4 c9 k9 v( g$ z6 d: G]
- F7 g8 g6 c. U$ X# d$ F' _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 ))
' w* J- V: S, n- C5 e; }& C* ]
/ B2 ^. e& d3 O2 J1 D  C* o

+ k* ^5 o) I: P: `6 ylet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))$ d( \) O! {, n% e
;;
及时更新il的评价质量的评价
" X3 n4 m, g& o( }7 kset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]5 p& Z0 j0 b1 v4 Y9 }
set l (l + 1)  ?* ]5 `  B2 l/ h) y
]
) |+ f  y9 k0 W" ]% h# dend3 O, R( ^' o$ q: T4 z9 J4 O
  e" p3 w2 p  Q
to update-credibility-list
* {+ O: j( y& I7 X% @7 `% dlet i 0
( n4 \  f2 F, g. owhile[i < people]3 k3 k6 \( D  \8 d6 Q
[$ {* ^4 L$ h; y7 z5 i& o
let j 0
. \0 S5 U" O7 Z- `0 k- H0 Glet note 0( ]! d+ l4 c% Y; I
let k 0. n  {$ q- z) f3 u" d
;;
计作出过评价的邻居节点的数目( j7 K% d# e1 G7 i4 T) f, e5 x. l
while[j < people]
/ x  a% N* c: V7 k$ k& K[
& ?9 ^) w' ~! g- v) Eif (item j( [credibility] of turtle (i + 1)) != -1)
* O  ^8 ?4 e/ D;;
判断是否给本turtle的评价质量做出过评价的节点3 b1 S8 G8 y% w
[set note (note + item j ([credibility]of turtle (i + 1)))
! n( s! X: {3 h  H1 K) L;;*(exp (-(people - 2)))/(people - 2))]

2 ~  m5 Q  a- Y& Yset k (k + 1)
3 g* c5 f% z( ~8 }( I]" F$ G  e8 Z# _
set j (j + 1)
' Q* P' k6 |: J, R& R: e]" D+ L& a: f, Z
set note (note *(exp (- (1 / k)))/ k)  y9 {& O7 R3 l6 h$ T) g& q5 O
set credibility-list (replace-item i credibility-list note)
) I8 G6 x4 \! s/ m4 O7 w% {set i (i + 1)
1 ^) Y$ R' m, _. p9 C( A' k0 \: q]9 S' D0 H( _. ^8 k9 X3 H% a: _
end
/ r( c; D" k- C: T& Q- G
! t2 C* F  w6 Y  g+ c7 s1 nto update-global-reputation-list
8 F' q2 `$ I1 L8 ?$ O; B5 L% c$ l" d/ zlet j 0
+ e: v5 H, V' U) dwhile[j < people]7 ?4 G* V* z! `( Y1 x, ?
[
# f4 n: J) C9 J. Y+ `3 klet new 0
5 J- {7 O* H6 Q;;
暂存新的一个全局声誉5 N7 Y3 D5 c# \* E+ a
let i 0
- s4 G* o( p  ilet sum-money 05 j) d# `: Q: v& O& \0 l
let credibility-money 0( l6 m* Y9 N" B8 L- o
while [i < people]
7 s) q; d' P* x1 e) x; x: w( u[$ I2 N' W) x) {6 j  p) A3 S8 X9 K" H
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
5 m4 F" C% l( ]  Gset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))' ?& M+ _. a1 r
set i (i + 1)
4 E1 _; ], x. K& |% i6 h]
8 T, y$ i7 y5 D: x3 vlet k 0
  [+ R2 ]' g* R+ Z8 i) Nlet new1 09 }$ i; E* W% G; ^/ X+ c
while [k < people]
. L* l% R/ q6 c! ]6 Z[
; t  c5 J# J# \- ~0 b) aset 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)
* M% Q) T- o7 Cset k (k + 1); P3 G: Y- c+ x& a3 r
]* [' \. X9 V) f* c( ^( t
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
' ?& `$ J; Z1 _/ x5 [set global-reputation-list (replace-item j global-reputation-list new)
0 Z- M+ E/ E8 o, z4 zset j (j + 1)4 ^9 m. T* ]( z2 N& r
]
" ~! _5 x7 ]8 ?  {end
7 l$ T% i9 C4 b0 f! I; B. Q* J7 W: Y3 ^0 j5 H9 T/ o! a0 T
1 P+ d5 G) J* q. s) G- G; i" b
2 b% E4 l) {' n. r' X
to get-color
6 U& y. I1 }" U5 i6 k6 I
3 I6 S7 V* j+ h# L! D" Kset color blue

- I4 f  p' T" L! eend
, e7 u' |; ^) [3 o; H2 U
- r) |0 A2 |  ^0 v' Xto poll-class, T, \8 U! ?. d" r9 x" L/ _4 l
end* _* u# l- C- N0 Q5 }

( |2 E* \. x8 @$ L* fto setup-plot1
- D  S) M* @2 i1 k# T7 m3 t* y6 P5 o8 ~* K: ^
set-current-plot "Trends-of-Local-reputation"
* a9 v, s! |8 ^- D! M/ X) l4 k

) j/ @! P& Y4 T$ e/ |* @5 kset-plot-x-range 0 xmax
8 \. n" D4 G) n  w: k' R

7 C" n2 p3 f5 P9 F. `9 l2 v+ q, iset-plot-y-range 0.0 ymax

* k( S/ s' I" K' J) Zend
4 a8 [4 f/ e8 ]) n; N0 t4 n/ ~  f3 |4 y6 c( N) U, ]5 o+ q
to setup-plot2
. x0 x) B" x7 P5 ^% g6 m1 l
' p) ~3 m7 s7 @! L# T4 Qset-current-plot "Trends-of-global-reputation"
* [1 z# M0 @( z" M  S( `. R2 s

+ U1 Y, v7 k. J. }set-plot-x-range 0 xmax

& r* s' r2 o- [3 U( T! F$ `( g- r( @
set-plot-y-range 0.0 ymax

2 e* k. c; {+ A7 F9 {/ S7 R! H4 E- v2 eend
6 n% t0 y6 A4 M. s# E
8 c; G. Z# C5 A+ l% B( cto setup-plot3+ i* G0 A- \* {/ F( f2 o

0 O; K; g1 ]' Zset-current-plot "Trends-of-credibility"
2 ~$ S. [8 ?7 M- b5 m  X% [% I1 c# I
& E6 K; ~0 L; l# [0 |3 X
set-plot-x-range 0 xmax
' O% H4 N) H, R
- B; `: H; M  u% ^1 W
set-plot-y-range 0.0 ymax

0 y6 Q# c/ o! f  S; l1 R9 N8 gend" J' ?. Y, X3 b) _! k5 j0 e) C% {. g
" P* ~& L2 q. ^$ _
to do-plots
9 U; q; s/ m  Mset-current-plot "Trends-of-Local-reputation"
: W) L6 `( N  V- S, gset-current-plot-pen "Honest service"8 F% n2 j7 @: h
end
% I" f3 D5 `4 n% s* [% t6 h+ @# D+ p5 E7 Z! b! ^7 P! Y" S! 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.$ h' K8 }8 u7 P6 D( N5 Z3 ~) j8 u

. T. O- ?( d6 l3 ]6 {2 r+ ]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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