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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:5 u3 \# l4 X. @
to do-business ) ~9 d  \2 B. ?) s: N+ d
rt random 360
& @: @+ s- b; ~/ \# t" k; m- q fd 14 j+ V& ~/ q. ^' Z# H1 i% _, S3 z0 Y
ifelse(other turtles-here != nobody)[
/ [( Q8 E0 e5 G/ f8 B9 E4 i   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.& p+ B8 @& q7 W+ K1 b8 E) ~1 |
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    $ O' c$ u# ?/ }; N0 J
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer# M. u, R# D0 ?( ~" p1 x
   set [trade-record-one-len] of self length [trade-record-one] of self5 O6 ~( [, A* |* C. i# ]0 E
   set trade-record-current( list (timer) (random money-upper-limit))
: f+ J# ~  F: v" V3 R2 W1 _' \4 g& ]" V6 z
问题的提示如下:
6 o* S# `  p5 G$ u3 R7 v9 u5 e; z  R  }& Y; `+ O3 v+ d
error while turtle 50 running OF in procedure DO-BUSINESS$ W* h! Y9 L- N7 W" Y$ J
  called by procedure GO
  S& y1 z, c9 j8 POF expected input to be a turtle agentset or turtle but got NOBODY instead.
8 ^6 r5 Z% ~' I
(halted running of go)" E) d+ {! V' y, C9 Y; n6 _& t% f
8 K" {/ x! _" `- N
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~~
% q8 f" ?/ d* {; p- N2 b) I, d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
- A7 ]3 P4 m. W9 j) ^globals[
% `! q, o  s8 ]8 G8 qxmax+ m/ v  q3 L% |* r& o/ I  n$ L& M
ymax
* j' e! j/ D3 Fglobal-reputation-list
" P! E' F2 E) G: u2 q2 B+ E; q
/ @# H8 E8 `9 w: D) K* e# z;;
每一个turtle的全局声誉都存在此LIST
4 b3 _+ p1 k9 B. t6 Wcredibility-list
/ L) ]# A% `! x4 Q) J; Q2 F# Z9 V;;
每一个turtle的评价可信度
: `+ d7 z$ h' r6 Q" Shonest-service
" ?7 ?- `. G8 f& R! E' r: E8 _unhonest-service# r3 f, {* d+ }: A6 c6 M+ w
oscillation# Z. p) ?1 y! E# ^9 ~
rand-dynamic
0 Y$ ~4 I/ J+ |& l1 @]
/ g8 `1 n# @9 |$ ~6 `3 l  b# ]# M! b9 @% X; i) l; f( [% v+ E& ?
turtles-own[/ m' M2 @$ j) F. O& ~4 j* g5 \4 j& K
trade-record-all- \6 J% a( L. }
;;a list of lists,
trade-record-one组成
$ s( k- }5 g: E9 G' {# btrade-record-one
9 t3 \" ^0 c0 O; q1 e' l;;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 ?" @4 k9 O( Q2 E  o7 q

0 R2 v6 S8 q( p# i, k' Y9 @8 J;;[
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]]; B) e+ O* o- v  x# e: N
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]$ J. p9 w6 a$ |
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list
* I% i  Z- f  sneighbor-total4 O6 l' n4 _. v7 B. M! B" q! }" c
;;
记录该turtle的邻居节点的数目
% X' N7 p( i- S, e' n7 [3 t* Otrade-time
1 p" u6 U( L  f" h2 I8 v, k$ |- L1 v;;
当前发生交易的turtle的交易时间
6 ]6 \5 d2 |8 _4 ^7 v- r5 `  G9 nappraise-give
/ U* Q" X. B' j;;
当前发生交易时给出的评价) N) f" T/ P1 P$ X  S6 ]! f  D% h$ Q
appraise-receive
; m9 Y9 }. F( ?' O+ D" r;;
当前发生交易时收到的评价, _! A! b2 \$ f0 d" Q% w4 M9 b
appraise-time
! l$ `% t9 z, R: \, H. p;;
当前发生交易时的评价时间: g: m# U4 M7 g1 j6 E+ ^" a* W* C
local-reputation-now;;此次交易后相对于对方turtle的局部声誉8 e8 H/ j' V! Y/ p% n
trade-times-total$ ]% p& h" V+ ?  f, w; y3 d4 o1 x8 G
;;
与当前turtle的交易总次数# c# E: N, T( F, L( r6 R
trade-money-total( K: \8 x  O4 v" y
;;
与当前turtle的交易总金额
# c; Q& Y4 o9 L  r% ]6 ^local-reputation
7 M  e' g% [: T" ~+ Pglobal-reputation
2 f2 F# a( k% K4 W4 ecredibility: X% I2 D# B& A! Y
;;
评价可信度,每次交易后都需要更新
1 g; b2 w# n0 j- }- U; Ocredibility-all! @" \  Z. L" }: D0 O. O- ^- D
;;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% j6 C. N' j- C8 M! i. G: N

# T- W$ r. l2 D/ G0 m: ]% P  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0.55 U; u0 a0 m! y$ a6 ~/ S
credibility-one% i6 r& p. i+ ^9 q) G: 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people8 o5 R& e2 z5 f( B+ L$ _$ O
global-proportion
  S$ U  u, [! c% g' I4 xcustomer% ^, k- `' C( W  P0 f: R1 Z
customer-no( W( z7 v* E) O% B
trust-ok
( S3 l8 S( o$ }) J! E( f# Qtrade-record-one-len;;trade-record-one的长度6 A8 |: y" x; j/ Q6 D
]
7 h% `/ K1 e% Z3 u1 B
7 C. a- F! A) v$ S* E9 @+ P- l;;setup procedure% E) ]! E: |1 r/ u0 E. s- k
8 E7 T- |* D3 N1 v$ S
to setup
" g8 J6 n7 m' J8 p- b5 s
1 q9 A6 N/ S+ W; ~& Eca
  G: @  G, G% p( p* R, F7 Y7 |
3 K" O" P! x% w! u
initialize-settings
  T# c( ~6 u% ^

( b9 w( o: C0 I" S0 d' R) e- ~crt people [setup-turtles]

/ I& |6 C) B. |' P  y. J3 X1 L2 W
( ^3 ^! v7 n9 F; `$ P$ K3 yreset-timer

+ \" G1 J- f4 V7 \! P7 l9 E; _+ O& H/ Y) g9 _, @0 M
poll-class
# \$ K7 u- F9 y+ e' b# J% T
) }: l9 J) j8 Y5 P' C# G
setup-plots
# r3 y( \8 M! B' x* p
$ e' n6 l! C! |8 J" a; t0 U
do-plots

: H: S( c/ p- [! j3 Q  Bend: w" f: Z) L, Y9 ^! d6 E2 j8 M$ J1 }) j
# H, s' G% U# [2 A/ c
to initialize-settings
' |# N7 n5 Y5 O0 n8 }; I: i$ _  ?- h+ U2 t! O
set global-reputation-list []
# \- p# `: K! T8 y8 d3 P

. t8 t1 b/ l, w& n8 Wset credibility-list n-values people [0.5]

' |+ W* f2 ?  P; V) s7 M
7 A! G# u/ F! j; ~set honest-service 0
0 I3 c$ f/ U* |, R5 O

- y( i0 A5 f' \, E# }% ^set unhonest-service 0
' ^( E* v. x! ]' u

7 u& O' C% o1 x; `2 I5 pset oscillation 0

8 a& E7 s" F1 t; r1 Q+ K
. A$ m" j: Z0 c8 Z- b8 ~: zset rand-dynamic 0

) _, w, J7 l6 Z. u9 {end: k) E, s( I) X$ Y7 L6 j! m

' Z" ~, r% H* Oto setup-turtles
) \7 Y- q/ y# G) Y. Kset shape "person"
. m2 v7 \+ ^( e3 K7 E$ e) osetxy random-xcor random-ycor
( F3 |4 H' s( Y6 B- P8 lset trade-record-one []
- x; b$ D- c6 w& ~
  g) q2 r9 @7 A! N4 j! A, z
set trade-record-all n-values people [(list (? + 1) 0 0)] $ M8 l# `, a3 N0 d  Z

0 K# I# n" c3 }2 Kset trade-record-current []. i' P7 H* ]4 `- @4 O. |5 D6 z
set credibility-receive []- U$ @( ~5 f: ]2 C4 ?* Q, D
set local-reputation 0.5
& ?  [) Z: g; _+ Q0 u6 h; U  sset neighbor-total 0
5 a% e2 _# [; R9 ^7 E" n6 j+ g. rset trade-times-total 0
  Y/ R% V$ S$ e4 L  U- L; Kset trade-money-total 0( N$ }+ r8 Y- r+ J
set customer nobody  ]) o# G! x3 ]& V
set credibility-all n-values people [creat-credibility]' b7 M, ^% v5 c
set credibility n-values people [-1]5 G1 c1 u  e% `  k
get-color
5 \6 ~: J- ?9 `, o
$ e( |; z' W( w3 E7 W
end
- Z: {9 ?/ x( S: O3 @7 D$ h/ u) P% j' ^1 |" ^! b4 H' N! C
to-report creat-credibility
7 D( f" _9 X$ x8 ?' c4 a/ qreport n-values people [0.5]
% I$ Z% A- z8 O0 ]* W3 P0 N7 Gend
- j* K: h) [' O9 H
( l, B+ I3 b; {: g% E' Wto setup-plots$ P2 E% C8 g2 q! S  P" E* d

2 h  R. e1 f$ `4 T& Gset xmax 30

$ O/ \2 b8 y$ M% H/ h4 C1 ]9 q( X5 y$ X" X' u7 o3 p* `
set ymax 1.0
' o; N8 x* E9 ?  i

$ ^! P( N, `7 F( Zclear-all-plots
3 V' x$ N6 l# T' F1 V9 `; t6 p

( _' @7 `3 i3 M: `/ rsetup-plot1
. Z( \) i, U" j  v7 r+ I
& L6 r  L9 c. a2 U6 l) s4 K
setup-plot2
. @/ F2 D) ?& i! C- z- n" g( E
# i7 o7 V* v+ N
setup-plot3
1 |! r7 r2 c. E7 D8 w0 l
end
) `& P6 M$ ^! v/ U+ _2 J, h; t- @9 j& G9 z& ]6 W
;;run time procedures
' P& H4 w' g% }- K' V& p9 y4 V! Q  N+ f$ _7 J: m
to go( u7 v$ G0 k& a* h; b2 g/ w% X
5 W! v7 Z" C# B
ask turtles [do-business]
3 D( t! k) P/ ]1 `& f
end
! N% g% \$ l0 t: l# |' B/ f
, ^. s4 T7 B! f  Vto do-business
5 F# k; V- X+ D

  q6 e& b* l3 m! M: Z" P  p3 H$ t) W7 u+ X0 M
rt random 360
3 o' u7 i3 n! p3 k

! ^* X" }& V- S  Kfd 1
. m& [. W, x- C, s. T& C

% l0 ~2 ^/ k% D. {5 e6 A0 u% u& [ifelse(other turtles-here != nobody)[
9 a. r6 k) Q+ p+ _. m& H% H" [% o

' @8 i: {$ L5 Y5 m, k# W3 }set customer one-of other turtles-here

8 o: z! \, Q, p# n  w9 y0 I5 l8 s
! z- O+ q7 t( s  S9 `# d;; set [customer] of customer myself
' U: c( ?" e( T* M" Z1 {

" I( N- J9 o& ?7 q' N. s2 {/ F% nset [trade-record-one] of self item (([who] of customer) - 1)
+ j  k1 B& {3 U# p' _, P  W1 z5 k5 O[trade-record-all]of self
; B: R6 P  y# Q% \8 p+ K- u;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
1 e* A, I: \) R

; E+ T7 A# r, S. lset [trade-record-one] of customer item (([who] of self) - 1)
0 d) g5 }/ D) ]9 M; ?: [[trade-record-all]of customer

6 d8 \4 B& E, N; P: [, l+ j) Y9 @- e
  H% M$ h( i0 \! i9 Z" n. s( S% Dset [trade-record-one-len] of self length [trade-record-one] of self
: l# @# r9 l* o. h6 L; I
, `0 M) G2 ?* ?7 U
set trade-record-current( list (timer) (random money-upper-limit))

) {( L" ^. ]3 A) e5 J) Q8 ~) k2 d/ A$ ^$ D  S
ask self [do-trust]
: ]/ n3 p) A' O# k;;
先求ij的信任度* c% m% Q$ [4 j7 F' B8 {% s
* b' z/ x6 J1 V1 A9 n& b# s
if ([trust-ok] of self)
3 M7 v, L! x  ?: };;
根据ij的信任度来决定是否与j进行交易[
0 I; O4 ?. V8 z" Iask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself+ c* u, s( _' r  C7 {) H$ C
* {6 Z8 }1 N8 u! l7 N2 K
[
  H9 G* P( ]- g  a
" G$ I0 a8 z. a1 s0 p+ J2 h
do-trade

9 Z+ z2 t! o5 j( t8 ^
+ C% |: I* c, ~% Gupdate-credibility-ijl

7 l! V. G* u# d- ]+ d. F2 [. x& J. l% ~, g5 W3 v
update-credibility-list7 F; {. i, f5 I1 A
& R# O( r; M$ a* v: |0 z! U* D
" a# M" f7 w8 u  c& J- @; G' u, c
update-global-reputation-list

" N$ C% ?5 V* B, [) I
: }7 M  d8 ~; T- U9 ]poll-class

$ z) _# [7 m6 E6 s$ Y( [4 _
8 m/ o; q4 S6 v' j1 T  i, Q+ @7 Cget-color

0 z8 ^( T( Z0 V$ ^# ^
1 W5 @8 j) a* y# o  r! h+ K# s1 D]]
& L0 h; O. o  C) @- n
- b+ V4 f: \7 z; i. ?4 L9 };;
如果所得的信任度满足条件,则进行交易
1 y6 y: e1 I4 c) }  `) P$ J4 i6 i9 y2 q8 C! N* P
[

6 i3 @" K# \; b9 F. g' v  a) `* y; ]) v" r  u3 A
rt random 360
: Q& A. b8 V: H8 R0 w+ V

3 a. R0 `8 V' r0 Gfd 1
0 ^4 r6 [, J3 j% N; |) W6 H& |& W
, Y2 o) G9 r7 J
]
# c3 b( z6 ^- E$ Y# v% I, U

9 `9 F6 N7 K- E' \6 L) J3 mend

: A+ T- ]/ o" l* K3 T& e
6 o$ F7 Q9 |" Q% W$ mto do-trust % n1 M" Y, z" i- H7 F" y4 z, v
set trust-ok False
1 ~5 t* \6 ^( z# B+ |; X/ X
3 K; u4 |4 q& X+ z) `/ R
8 [5 X4 O/ u3 A! @  z" q
let max-trade-times 0, ]; i6 o; I- U  K- x
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]/ N3 n/ a; }. l" o) k* A
let max-trade-money 0
' p0 i& b) G6 K6 c. iforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
9 l) l5 L- k1 d, E; r  J. U+ qlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
+ L' H, k2 g8 S; g# I- \5 [. D7 r. \& L* W: h! N

" Z3 d; \: H2 d$ Sget-global-proportion( \: @; n3 S7 M" B
let trust-value5 d* C9 |, O3 @3 c4 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)

+ p* O2 v, T* xif(trust-value > trade-trust-value)
2 N( w1 R: P/ l$ e$ r, d! \5 C6 x& z' S[set trust-ok true]+ z  q5 X+ w8 V+ P6 L) Z: v
end
& c$ M( F5 M( r4 x! @+ G$ D3 m  d" y/ z3 J9 i9 h. y# Y! N! C& W
to get-global-proportion
2 ]! V/ B/ a- J3 h$ `9 Cifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
  |. j" D" b& _" N0 U[set global-proportion 0]
/ k7 @  ?0 Y% B( l[let i 0
7 D8 r7 Q# a5 D* Zlet sum-money 0
9 S% q# |" i- W( S: }+ q' T0 Twhile[ i < people]
9 E9 E( `7 o% E9 C, l[
! _# F  D0 K# q5 D& x5 B( Aif( length (item i
) }) ^$ d- _  q7 p3 k4 j% U+ m[trade-record-all] of customer) > 3 )

* o" e8 \; s5 b[5 s) y/ {7 r! Z; l0 ^( x2 f' V9 ]
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))6 C: w! _, A4 M1 k# `
]" P, R, _3 T; @
]
% r- G+ o, {/ P$ [. J+ [  u, U' {let j 0
/ c9 Y2 I5 x% _. Clet note 0
7 S" D( j6 [" C6 r; k/ K' \while[ j < people]
& w" [* w& E$ Q8 Q2 p* M9 E, x[( }5 p: F: x( j3 C
if( length (item i
4 @. F' }4 V& ]+ M. _% F[trade-record-all] of customer) > 3 )

, }+ \) p4 X; z) [[
* d# h+ e8 A, jifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)( u* k+ I* i+ z& [
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
/ J  k2 L9 T$ ^+ j+ L% {[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
4 x8 J/ a' F; \' u7 G, T# X]
$ k- A% z5 p( o6 V1 v) t5 J]( v, s! A5 p( c8 t6 ]
set global-proportion note6 J" D. e8 j5 e- G+ |6 p
]$ h2 [) q- _5 J) W4 W$ F5 M
end
& G1 _7 Z5 m8 E  _  E; }: w) C  \2 A8 [6 I8 O+ z% [
to do-trade
2 x. B$ m, B0 L- `( P6 Y;;
这个过程实际上是给双方作出评价的过程
) l. v+ B2 ^8 s: t' |  U/ rset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价6 l6 Y5 t% B, w9 q5 W& o7 T( \
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
( P5 S, s6 U0 xset trade-record-current lput(timer) trade-record-current& ?4 {/ o* B3 U: {0 z/ c- F
;;
评价时间! z/ _" u% d# A0 |; W! y4 V
ask myself [
1 _. t- s3 i. Y7 a, Z* `4 Eupdate-local-reputation
! i8 J+ Y" e3 f% \! e; |set trade-record-current lput([local-reputation] of myself) trade-record-current
9 R9 v% P7 N+ D2 P1 D6 r/ G/ E( N4 k], G1 i! z/ ^6 W7 x, B% w
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself0 G; ]% S# Z' \$ r+ a( E' ^/ z
;;
将此次交易的记录加入到trade-record-one
/ {1 A: O2 ^- k$ m  r0 b/ qset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)5 H7 U" q' S4 r8 o. F) ^' S0 v4 e
let note (item 2 trade-record-current )4 ]* X& z# W, p9 R0 b; h
set trade-record-current) M, C' A9 {2 K$ @& @5 [
(replace-item 2 trade-record-current (item 3 trade-record-current))
2 x0 Z5 k6 o( D$ s
set trade-record-current( M$ _) d5 |, m
(replace-item 3 trade-record-current note)$ v# ~+ A0 D- e  A- e6 a- S

: l7 s/ [* Z, l4 N) ?
6 \; A9 ^4 r" ]- c: X; O2 a
ask customer [8 g$ f9 D# L+ A7 f/ X/ I4 i
update-local-reputation
9 B! d  u4 y/ e5 q* I/ qset trade-record-current0 B& L& b8 X8 z, v$ u! a, a
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
8 l3 X  ^7 w9 W" D: ~, H
]
  T! Q8 k; {) j& A8 u( _+ I0 z6 V/ ^1 z% A: t# ]# N/ o, h

9 [5 B- r* w! _. q- s" C; kset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
( H9 q- X+ ]( ?8 @7 a4 ~
1 U4 Q0 t5 B7 ]' k2 K+ m2 w1 U9 u
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))" c5 M- l) o6 {/ `( u+ t/ K
;;
将此次交易的记录加入到customertrade-record-all
! u0 Z; P, r$ p9 C! Wend
4 ^4 {4 _( k) U
/ Z; h; w1 u  {8 F' hto update-local-reputation9 S# n& D; u& K9 v
set [trade-record-one-len] of myself length [trade-record-one] of myself
2 G0 a, t0 h. c  x7 J1 T. q4 [$ X9 E' W
( Y5 G. U5 h$ d
;;if [trade-record-one-len] of myself > 3

8 Y% U% Q; S5 i2 Jupdate-neighbor-total
7 f$ ~6 C) l% J1 J9 X# n% i; m;;
更新邻居节点的数目,在此进行! {3 W: X/ f0 x; Q( p
let i 3) S  t6 X/ A; Q: c. ?5 P5 Q8 a. A
let sum-time 0
. p8 o+ w3 W, s0 Wwhile[i < [trade-record-one-len] of myself]% n/ A2 C- ~% d3 _8 Y  S- h# w0 P
[+ @! P& V" |, c$ O+ l8 a& N9 `
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )1 j/ h8 j8 P9 W( U$ D# u/ A
set i! G* N7 W1 r5 c, m
( i + 1)
& i9 K# _& Q% D6 i" s
]1 d3 t4 q( d6 N: r, [& X
let j 30 v  I% I) H" I2 E0 V
let sum-money 0
# Y( i/ p1 D1 Ewhile[j < [trade-record-one-len] of myself]
! w: V8 l0 E* X( z4 j[
- g2 U5 |( u6 X- Hset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
$ b! o# K) t7 l$ K" d* Hset j- t: n4 _% m  W  T
( j + 1)

, C3 W% t+ j7 S( U. ^6 W]% g& d5 P9 m8 E% r6 R
let k 3
4 G6 B0 ?, j, {1 @, Ulet power 0
; s& d) X) ?9 }- Q" Mlet local 0
" c& W. a  I6 Z, i6 |3 r* I  mwhile [k <[trade-record-one-len] of myself]
4 u& u( B( X$ `8 X[6 G4 ~) l" W7 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)
3 ]1 h& W; U0 k1 Dset k (k + 1)
+ x" k+ B$ k( s. j]
* p/ R* z! S) Lset [local-reputation] of myself (local)  [& T) p1 w4 }6 B
end
0 k! S8 z" f6 o4 Y2 k" g* |
% s; L4 }# Z0 U2 J3 Dto update-neighbor-total
3 _+ O' \/ G& I1 q4 [: j5 k! z
% @, Q. V& n1 h+ }) Dif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
1 g1 i' |5 r' E+ G9 Q' j" a( G
' v' U) n: \( c" T1 C+ Z$ `. W# d
8 x/ V' v/ m! h7 `
end
2 p1 l$ k) F$ a
; v9 T/ p, C+ n, l8 Q( ~6 ito update-credibility-ijl + S0 W+ G$ u4 f: P9 ~

4 o) K( |, c# _* V% m+ s1 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。
8 b  @/ ?2 t( W) vlet l 0* ]: S  [8 B, p7 f- U0 y2 p! y
while[ l < people ], _- l( A0 h9 j* @7 u$ s
;;
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. |$ k1 {; H4 H" R9 f
[( P4 P7 ^, ~- G+ ?
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
& N% `5 m9 e( t" V0 vif (trade-record-one-j-l-len > 3): h% V- D: f: y* Z  j4 y
[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
  H1 A$ ]% N5 ~. wlet i 3
6 q) ?' w3 B' O0 S/ f& olet sum-time 0* Z% l) i4 H8 N
while[i < trade-record-one-len]+ L3 [9 d7 l6 i9 L& U* l- a
[
; j! |7 U( y4 ^$ Sset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )) Z1 b# |  _& Q- @' d
set i+ o) R4 U& G6 s5 Q) b1 L$ J
( i + 1)
( m/ e: V" o7 b
]
% {: p0 @% z" H  O/ i7 |let credibility-i-j-l 0: B' u4 J0 \# X; s. b0 B$ F
;;i
评价(jjl的评价)
3 J# s3 R- @. N3 B4 X3 S7 plet j 3
7 T5 }- c" t! J# b3 V2 G6 C$ F2 U. Xlet k 42 c  J$ d5 _9 f( |8 u4 F
while[j < trade-record-one-len]% D0 t! Z4 s% D* ?& ]2 r# s/ ?5 |
[
" U" N3 Y9 x; Uwhile [((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
# o4 E- ~: Q9 R. q3 iset 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)) M- ~: u7 e4 f
set j
" u6 B4 ?7 r, [1 O1 q& c: y8 `4 U7 a& m( j + 1)

& s; p, r9 B) {, c% W- z]
, v# W# j( F* I$ m& kset [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 ))
; g# S- J: ]0 X7 `. k" S' c- B+ R9 y1 b7 s1 k' f+ p; h' P# [: H

% ]& y! {9 ?& g( |, Q9 d) w+ `let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
4 A3 P# n; i/ ]% o, k% Z;;
及时更新il的评价质量的评价
( x! X5 I! Q7 x2 i; kset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
5 X, h. P' E- u( Gset l (l + 1)
- C0 N4 _  }9 ^) N3 ^$ L' g) z]# j9 [* S! ]" s
end
) I/ R" G& d! [* n- r; y8 H* o* p. S! {: k
to update-credibility-list
+ [" w8 ]9 d) }4 A3 w  j, ^! Z3 Dlet i 0
! H; X, w' }- N, x6 t- [3 n$ y( p! U6 pwhile[i < people]2 i7 u2 ?5 ~2 ~- H2 B
[
( n- P: t) |$ f, s; [let j 0
& D* u4 a# e' y) y9 Llet note 0; n7 V0 Q( j: n, M# w
let k 02 H) v7 V& ^2 h5 y% h# Q$ N$ y" E
;;
计作出过评价的邻居节点的数目
; i' J2 Q, R) t4 I% ]' jwhile[j < people]
  t/ B9 Y5 v1 d* W, V[
9 Q8 t' l" n# cif (item j( [credibility] of turtle (i + 1)) != -1)
* Q, s, ~' o2 S6 };;
判断是否给本turtle的评价质量做出过评价的节点- O4 d, `; E" I0 W: }
[set note (note + item j ([credibility]of turtle (i + 1))); W, }$ n. F6 Z
;;*(exp (-(people - 2)))/(people - 2))]

/ ~! W& U7 M7 ?& Y4 oset k (k + 1)
8 ^$ K5 q% E+ H0 Q2 U+ C8 i$ q' r]6 F$ ~" z5 n% b
set j (j + 1)
+ ^- \- e3 ]) x/ l]
' E2 c2 h7 T. G. qset note (note *(exp (- (1 / k)))/ k)" k0 x) W& d9 ]# {
set credibility-list (replace-item i credibility-list note)
5 Z" e0 w$ ^, \& H" Sset i (i + 1)
' Z: A. L6 b: \# q]
4 ^: l0 g( U. \' X2 q, u2 G9 i6 wend
7 Z+ _* O  e) r" \( q, ^+ ~2 D+ |3 v7 Q% b. g( |
to update-global-reputation-list; \* n9 X8 N+ E, e
let j 0
+ a/ W- p. R( v9 k) Q7 c# k7 Fwhile[j < people]
) N5 i1 C* }: Y[, z1 C7 f# ^, C$ \/ U+ O, _
let new 0
( W! H; o: d" V) i# y8 {4 Z( m;;
暂存新的一个全局声誉+ c8 i" r, \" N  R
let i 0# L- t. |7 n( R; b
let sum-money 0
/ b& O9 @2 H  |7 _: Q1 Elet credibility-money 0
  t2 P5 M$ j, }! C$ \while [i < people]8 S& J: w/ j; f6 ]
[7 a+ A  F/ B/ a: F3 P* d
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))& a  U6 b  K" U" n
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))* `% {! v3 K/ w/ E
set i (i + 1)
% [# h8 w2 F' R]
' z) z2 E! o- q- i  P2 K" i/ t" zlet k 08 e* h* H( y2 Z% m7 j
let new1 0
; m  n2 u7 h, \% W. A1 A# Iwhile [k < people]
* J! W% {4 J6 ]0 F* D7 D4 ^* v[# t2 S) G+ K( N# N; |
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)6 }& J# A- B: z+ p6 C( N; M
set k (k + 1)
  }, J1 ~. `$ q! O( ]; G]  g5 K5 j1 n0 s# A. C3 w7 x
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 3 |- n+ L* }) r0 M% @; k
set global-reputation-list (replace-item j global-reputation-list new)
! y- {" N1 P3 c& e# o9 t+ `- cset j (j + 1)
7 e! w; {; P& i9 t: c* t]5 z  Q$ p& L3 j7 z; |. v9 Y
end0 f& E9 |  }- |4 r, T8 q" c% S9 c

0 ^" ?2 Q6 s6 `
: {" M- W. _7 R1 Z# L- Y
- {! E; d& a8 t8 T# b" N& j" wto get-color
. |2 w& ]( H, f* S0 K" p( K5 k. I) s6 c' Q& d1 ?
set color blue

/ w8 x. P. t4 Xend4 q) K# B3 [; g$ V& Y/ `
1 u; s; l" a& Z
to poll-class
. b( D; h! W% T( D5 b0 o4 f. k$ tend5 c8 o, Z; d) T3 l: ~

" W8 T) I! c4 j) e  dto setup-plot1, `# n- V  U/ s5 Q) f; v3 l

4 v9 O; t( |4 Gset-current-plot "Trends-of-Local-reputation"

; o  E# z5 |5 {# g  N* U) m+ Z/ b% Q& M& T3 b; N" }; D+ ^
set-plot-x-range 0 xmax
. k/ ?4 p1 {6 {
8 X4 m2 |( l' e8 B
set-plot-y-range 0.0 ymax

0 f$ ?" P! b! U6 v7 D; o6 `+ Vend  a! Y: U9 @' t4 X0 k, J" C# ~

0 B/ U) I1 w" J, C8 {' lto setup-plot2
. E+ t  a- @) o& m+ `9 o' e/ |+ P  K7 i# z, h+ i( T  s
set-current-plot "Trends-of-global-reputation"
+ m9 s, ~1 U& z9 w# r
: c* n( ?' C) V$ R, P" g. D$ Q
set-plot-x-range 0 xmax
' O" p5 S/ ^0 K1 H+ {# o

" z+ @2 ^$ M2 F2 w; L* k/ I5 a; _set-plot-y-range 0.0 ymax
) Q' F9 z% |0 W2 E
end
6 W3 e9 Y; e' C! S) Z3 L5 P( U) l6 U4 i! l5 @! d
to setup-plot3
7 C2 S  E: L- ?  h2 I* E. t/ |  Z9 U5 V! x1 ~; D$ K4 U3 I
set-current-plot "Trends-of-credibility"
: U" ]3 @; v/ y' A7 r
2 n- G5 t1 {' m2 z$ @- m. ^( p
set-plot-x-range 0 xmax

% K4 B/ Y. Y/ _4 f- t: B
& I9 h% F# S7 x. L, {5 oset-plot-y-range 0.0 ymax

, P7 O  H  |' i, }0 M+ \3 M/ {. v. Dend
, j! t7 P1 m4 v* i( I, F" u& v- ?7 m) S4 [! z, i- Z' r& |7 B
to do-plots
, B4 k+ T2 r& C% Uset-current-plot "Trends-of-Local-reputation"
. a% r; l: M5 c" i" d- |$ Iset-current-plot-pen "Honest service"
4 A, i2 M( z4 L! V. o3 Aend
2 ?4 G  y8 G! ]/ z. i' T4 @$ N7 V; v/ g( {6 i# Y5 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.
- n' D2 q; p$ H2 ~8 D1 y9 _; O9 v& L8 Y6 i) `
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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