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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:& W$ ?+ h6 E6 c: Z, [2 M& m
to do-business
+ ]0 z- [5 \/ y0 r5 k5 D rt random 360' ^, I/ p8 m: S  ?  ?7 {
fd 1
+ q# Y) a, S% y1 n) `7 l0 V; P1 D- T ifelse(other turtles-here != nobody)[
0 V% H: ^" P9 I- K6 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.
- s/ ~- J7 m% m! N* C* X2 w# i   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
# v- Y$ g5 `* m: Z; ?$ Z   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
& r: V4 a' u4 n+ C5 _2 x% u1 F) Q   set [trade-record-one-len] of self length [trade-record-one] of self! H3 D' c! N. Q
   set trade-record-current( list (timer) (random money-upper-limit))
) P# K8 I4 @& U+ t  V" [* M+ o5 y* Q, t% g% r
问题的提示如下:
# o% J0 k! s, l
8 V- s# E* }) f$ Lerror while turtle 50 running OF in procedure DO-BUSINESS
4 O/ N' n) g* s4 f9 s  called by procedure GO6 z  Z1 W4 P9 ]
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
9 S1 C9 ?, C0 Q+ F3 {
(halted running of go)
7 r; W) A5 B4 M( c# e( X0 ~
& l3 \6 U, Y# i. t) i9 t) I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~~5 g$ G8 D" I9 l( M' J
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9 H3 @  h& M: q! C  b
globals[
' y+ U, c" T2 k" u: z: Q5 Sxmax
3 `. K: g# l% x- Hymax
2 {* g+ j( I. lglobal-reputation-list
! V9 ~' x6 u3 M2 @! |  q
( j0 Q. }( k( r2 `7 A& H- i" Z* i+ V;;
每一个turtle的全局声誉都存在此LIST
0 ^) i" y9 L6 J6 ?credibility-list6 N" }3 D8 \; }; U* \7 Y
;;
每一个turtle的评价可信度$ K. I0 [  Y" [
honest-service, ?( P* u+ e( k
unhonest-service
9 L6 Q& F2 X9 [' H( xoscillation
/ y7 O" D1 J; g! c3 g5 frand-dynamic( k% l; Z3 D; _, U) C/ S1 B, `8 ~; n
]# i  u0 @$ {2 s  }  F: O

& [* f% y/ w" X+ Eturtles-own[$ C4 |" K3 {2 v1 \# c8 d
trade-record-all
1 A* q0 q5 _: K1 ]  o1 L1 G9 e) k;;a list of lists,
trade-record-one组成
7 B# Q# o/ ^* ltrade-record-one: a( ?, |. r8 B3 `
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
' q, w' K* c. q; ^0 u1 H5 `8 w: ?8 Q; P0 R) z. X* G! H
;;[
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]]
' G% x6 e( f8 Gtrade-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]
  o" ]: `8 v& d7 e6 ^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
% S* N: N6 ?! Q5 l- ^neighbor-total
  Z* Y, y# |/ b" J; u1 [;;
记录该turtle的邻居节点的数目0 |' {8 @2 ~( b( K; e
trade-time
1 {! C* }: d+ t! a;;
当前发生交易的turtle的交易时间
* k7 S6 R% g9 a% y; U1 Cappraise-give7 W3 ?1 L7 }  b$ T
;;
当前发生交易时给出的评价
/ t+ n1 S! ]7 _! ~0 nappraise-receive; N5 `: t# d- a! Z2 }) L
;;
当前发生交易时收到的评价
' J3 d) P* \" a' p6 C! L/ qappraise-time; d" R3 _; Z0 Z' P( J
;;
当前发生交易时的评价时间
, k" O- k+ ]! r+ o% I5 [7 vlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉& C6 B! }9 Z/ Y$ p9 y  k* A
trade-times-total
' a4 ?) P8 L( C) l;;
与当前turtle的交易总次数
0 i& |) ^1 _- w4 ]. H* atrade-money-total* Z+ u+ \$ R& M: x1 [8 X/ n
;;
与当前turtle的交易总金额
4 @2 O( B9 a- |# dlocal-reputation  ]* _8 N7 g3 _1 \
global-reputation! [0 e5 c6 u0 a5 t) _
credibility
4 V! o2 g7 c4 |! Q: T7 n" L4 V( p;;
评价可信度,每次交易后都需要更新# E2 d# ^( K. T& p  l1 U# c
credibility-all! G4 w6 c& D2 H% m3 B4 o
;;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
: I( _7 W6 L5 V& \* h" y7 R/ b, [3 e: w0 q! ?
;;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
- `( u7 q6 y, h8 q" Z  Z, Ncredibility-one* q+ i7 m! ^6 r# n6 W2 H' Q% S1 J
;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people- D# ^! Z8 W# H$ {9 Q: N  U
global-proportion" j5 {+ a9 A# m0 `2 q! W7 p) `
customer- h# ^- i! ^: W: W; M. C
customer-no
7 t9 o& O2 k6 \9 c2 a/ dtrust-ok' W  l5 K: C% f* j
trade-record-one-len;;trade-record-one的长度
( v; K, {+ n; E) A0 H5 m7 l& c- t]
2 v. b6 a0 O6 m! v  j, d; K2 ]+ c
8 q( C3 M0 }& @2 O2 Y8 }# j; u;;setup procedure6 g8 A! ]/ v2 H4 n8 H
5 }, n( y; S8 V$ ]
to setup3 I) W  H: _" s3 `7 h
7 t( F3 \' c% O; f% ]7 K
ca

3 n4 P2 a( b# K! t+ j' b
7 p" O* q5 g6 m. ^6 ]$ h1 ainitialize-settings
' J: m* d6 h0 k' f( ?$ z
2 s) F) P2 N1 r
crt people [setup-turtles]
, v  k# o, `- |/ p
' A' G1 b) W6 X( J1 c; n" y
reset-timer
$ S/ m/ T, d1 q# y

+ y: y4 Q8 J2 P- lpoll-class
$ c4 I" v3 F9 M9 K4 {1 d

9 x5 v9 ]2 U' e  m0 Psetup-plots
" T; x5 s# S- c3 A
! D* d8 [3 W6 @& Z0 A
do-plots

& e. m; C5 ?. {- U1 [end
3 b  s5 \, u7 [7 t, ~6 U% t" {. `/ y! d5 \
to initialize-settings
& k; }' f7 R) _$ }! Y* s, W: o; \, Z5 Z; G' H6 Q& s7 U3 |
set global-reputation-list []
# ?. O3 J# q0 A4 L/ `

* ^+ K) v$ R8 B7 v) ]/ X! Yset credibility-list n-values people [0.5]

, v, L3 Z; B4 g9 ~5 k( X5 K$ q! X/ f4 |& P9 u3 z* _
set honest-service 0
  g3 E+ k1 l: u" j

- q2 Z5 b( @: M* ]/ fset unhonest-service 0
2 a  K, L* j+ d; C3 N
2 V8 M, I. L$ m& [  f: D0 s! x6 W
set oscillation 0

. X. {7 s7 ?8 d  _3 A
5 I0 {2 H* n* e- |' mset rand-dynamic 0
& A4 x4 n; q6 Y8 B5 M- J$ `% r
end
6 c! ~7 G0 L3 L/ h* _" d: K$ T1 e0 Q# u( y& q) [# k  M
to setup-turtles
, {2 h& c) e4 A7 M; Fset shape "person"
8 B1 S: C9 J' Z" X+ K, ]2 C( A3 Xsetxy random-xcor random-ycor7 c8 s0 S, ^+ }2 H9 I2 q( x
set trade-record-one [], k4 w( {: a: r' W1 \6 \) |6 n2 m9 j) K
* d: r6 y+ \% \
set trade-record-all n-values people [(list (? + 1) 0 0)] - n# Z: z" h$ n$ H
) U* D3 `; I( H5 F& B
set trade-record-current []
( a/ ^% H/ R2 W6 J$ k8 `5 Fset credibility-receive []& t! J/ }: G( w6 }1 F+ x  k& |- Y3 ^! [1 @
set local-reputation 0.5
( c4 L- D+ a- `& z- h" k% s8 dset neighbor-total 07 r4 i( k, L( ^, N; }: A7 D9 u" d
set trade-times-total 01 K; K# T. O7 j: P4 f
set trade-money-total 0
+ F' V  M% \/ d7 }' y& q9 O/ Rset customer nobody
$ k" L; u) ]  g% Iset credibility-all n-values people [creat-credibility]1 O2 Y: O$ Z& v% t; F+ s
set credibility n-values people [-1]
- U% c0 U5 B. t; ?8 oget-color
* T8 g0 N9 W1 w3 n2 }
2 B5 e- y+ \" \" C. P! @
end
& Z( U  y) L3 [9 O! T2 N& n+ i. C+ }: b$ p
to-report creat-credibility+ Y  g9 d& R2 d
report n-values people [0.5]. y! D0 ]  }( S& y3 R6 b( H
end" k. ^1 ?: }# s6 V( `# E! O2 F! }( V

1 L" l, o, c0 Rto setup-plots
2 |. D) A( @, v& K! S4 Y7 G& Q: f# w0 C- X4 I; g+ ]) A
set xmax 30
8 N( f  P. E, o. U' D

& l- A  s% S& E! |; ^set ymax 1.0

# ~( }' T, J. r* \9 L8 g2 `: q, t) l; D  e; n
clear-all-plots
, v. U0 c5 e! ^, R) ]9 f1 [

3 q9 R; u$ ~7 G* H8 hsetup-plot1
( _/ U4 N8 F% F2 p4 F0 O

, v  r. X/ f( ~& Y$ ?& wsetup-plot2

/ K2 f* u/ {4 B( W) @& i, k1 f, n1 Z0 I( B
setup-plot3
0 |7 A+ {, z3 W) E" N
end
0 ~+ ?$ X% i  ?( Y9 j6 Q# Q
8 s( ^& q  P% b% ~$ p;;run time procedures, n8 S2 Z6 T5 ~: J
# Y9 H# P  [9 d$ M* M# g
to go  @( I+ i' I* ^# ^; @0 B' V( u

% I8 D( J0 L: I3 h. d  fask turtles [do-business]

" a- K( u9 y( ]7 p# C. g! cend4 A/ Z- |* J& X

5 o$ l: c6 Q7 l/ ?* sto do-business
- Z$ r9 Q. ]3 d  o. S* Y6 t

0 j/ |3 T# Q- d# A) c6 G  S) e. \3 v4 j0 Z: J) _0 r( D+ i0 B
rt random 360

7 g( W' V' D0 H/ G
* Y6 r4 g! n* k( o+ ]fd 1
) F. c8 q6 H( M3 q& d4 `3 ]
6 `/ U3 ?) j+ d5 ]
ifelse(other turtles-here != nobody)[
5 P( f. {( h8 R  I

$ `, s3 ]( |3 a; T8 R, h  Rset customer one-of other turtles-here
: e- w! _( g3 Z7 Q- @
, y- a7 |8 ~. r2 F8 n/ L+ o6 A
;; set [customer] of customer myself

% ?3 x" A  A6 I" D0 k$ E4 n" a# b5 a( Y( _- k4 d
set [trade-record-one] of self item (([who] of customer) - 1)! }6 J3 N% F- R$ _2 W  f+ h6 T
[trade-record-all]of self# P1 o; c& ?' \7 C9 z
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

! R) G! w( M+ C( L+ s' q8 q" `6 a! O, b" ^
set [trade-record-one] of customer item (([who] of self) - 1)
" @8 F6 q5 Z* r( j6 Z# ][trade-record-all]of customer
; i9 ?! U, r/ Z$ {
4 Y+ H8 f% ]3 p# D
set [trade-record-one-len] of self length [trade-record-one] of self

! {$ o/ p; U, e' y1 ~
% r" N2 k$ ^4 x! z7 b5 \! Tset trade-record-current( list (timer) (random money-upper-limit))
2 L- _( J" }  R5 Z
! Y4 k. M# f$ e$ l
ask self [do-trust]% p& c' t$ e" Q0 a# I# @
;;
先求ij的信任度
, a$ t' ?( `) I9 g* L! o
/ Z* S, M: m  }7 Hif ([trust-ok] of self)
9 L7 o- Z* n" w. q* l( L& l5 n;;
根据ij的信任度来决定是否与j进行交易[; h) y- n+ \; S  V2 b: v
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself" x4 i/ B1 W+ T6 H& Y( N6 P

% n5 C4 U, t3 z[

. @8 s! J3 \! V0 f9 F  O7 }' D7 }, b. z. Q. \
do-trade
6 Q5 w: K- [- o, A+ T
+ e. O( z. `6 l5 T2 h! }
update-credibility-ijl
- z1 \+ W% g' v

  i: b/ T. |* I4 Fupdate-credibility-list" J8 o" C" k. g7 t% U

! y* k$ B2 ], |! w1 q0 D; d( @* J3 w  Z9 i  P: A$ b
update-global-reputation-list

9 ?5 M% V0 B* w" J+ [- o
. D6 X8 y- n& E& s9 H2 epoll-class
8 |5 |- B) j, j
' i* R* T( h  o* x5 F- ^3 e
get-color

" n  [' X! L! ~, y1 h# Y5 I; G
]]& P9 }6 p0 q0 k6 O
# f$ K  u: ?1 M% P7 S' Q1 r- n
;;
如果所得的信任度满足条件,则进行交易; @3 P# k' E! x* Q% |
) K8 K9 _+ _+ ^* s# V
[

) V+ [* Q+ K0 S7 C+ w9 g4 T  b2 W: I
rt random 360
. a& W( N& s9 M8 S) a3 C- Z

/ K! Q5 a9 p+ c" ?: e) N7 ~7 Dfd 1
1 e9 W3 h+ j- k; h* a" U. _5 v. z/ M
. V3 E3 T; w- m5 f& t. }3 R
]
+ |( r: T) }, I6 Y3 ]

/ u" w' o/ B1 hend

* V& Z* u" K' g* y& c3 \8 U1 k8 a2 V5 ]6 U3 P
to do-trust
9 @) Z% Y* Z- l1 O% \set trust-ok False
8 [! v7 o0 Q1 u4 y; ^. \" x$ ^
6 H& K. ^4 A8 V

2 k- R7 u9 B2 {+ ~+ Rlet max-trade-times 00 L# K! Q5 q1 I6 x6 O4 C- j6 W" o
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
/ k3 S9 @3 \' f# Alet max-trade-money 0
2 Z1 a7 ]1 ]- d. kforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
  u1 W5 G  R  g6 D/ [let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))/ d% B1 m5 J% w9 S4 U: }6 l1 Z
1 H: _1 X2 O" j3 e. U% L
5 |3 U8 Z! p3 a/ S$ |
get-global-proportion
% v' T. U) g8 m( E. u. p$ d% rlet trust-value" E$ x. i6 O2 |, J; R
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)
& t8 U# z  G- {7 V: J1 @; A- N
if(trust-value > trade-trust-value)
/ a# e) o$ ~7 P# H! ]! W% u[set trust-ok true]8 u3 u! e; X0 y
end
. k4 R( z  g( z: b4 T5 B6 E# X. v& v9 Y% W* c# K7 U0 J1 @% `
to get-global-proportion
7 o; Z" l1 \5 U# oifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
; k: D9 |* G: w7 |" q[set global-proportion 0]3 ~0 t6 c. `, D/ S' E8 E
[let i 0
% A# R# G# ^" C! U* {% ilet sum-money 05 h' f7 ~+ j4 ]! l
while[ i < people]+ I$ r* C  S' ?/ a! c( Q, h
[) v! P% o( i  S1 O
if( length (item i
2 y3 M7 W* W8 s, C5 z  y[trade-record-all] of customer) > 3 )

+ }- i" C4 T: P/ ~: A( F[! m* y5 e4 k  _* F7 H  k
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)). s$ I" Q' U) c2 h2 y+ q
]1 N! s' W: q' u: r# ~! f
]9 z3 o* h- b) W+ r4 r! Y2 H
let j 0
5 `+ z; f7 P" ~, Wlet note 0
) _5 Y$ \! U$ W/ pwhile[ j < people]
' r$ v; |' [( F2 n[& _- t, @5 m5 u" h: w0 t8 U
if( length (item i/ B& o1 U0 a5 x: J% G! u
[trade-record-all] of customer) > 3 )
% d+ ?; A$ b& i6 o" _. j( L
[0 c: }4 `: m% Y! u  @
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
2 X. ~0 y- O( J/ K[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
* x$ b" ~0 `( Y1 a; O[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
9 [: S1 Y& s" L0 b]
& X1 g- C- T5 o+ ~4 A, ^/ K: s]
9 l9 Z& g2 O% N4 M( W& @* Hset global-proportion note# G: R6 U% h+ Y) G+ {0 N) u1 p
]8 l' l8 |  ]- q
end) H8 E1 U. n( }! r& f+ E. u# `
0 [* d: t% E" U8 v+ C
to do-trade
2 q& x+ D" n0 O8 J' h+ H2 g/ y;;
这个过程实际上是给双方作出评价的过程; ]% b) K4 l& Y% V
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
6 j8 t: N/ Y$ I) Z3 V% Gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
/ X7 P, f( X8 A7 I6 Z$ w+ g9 Vset trade-record-current lput(timer) trade-record-current" \: b: E1 o9 O; T4 ]; `
;;
评价时间+ X8 p7 z2 ?0 Z5 E6 o: z) A+ m
ask myself [5 S$ Y3 U+ V( A( F" u6 F
update-local-reputation
; z& E- `% i. ]+ ]; `; dset trade-record-current lput([local-reputation] of myself) trade-record-current
9 F+ M4 W8 v) {2 @]
' `/ {2 L/ ?5 q4 K# zset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
! Z5 H1 P4 R) Q6 a+ i9 [( E;;
将此次交易的记录加入到trade-record-one0 C' K3 t6 |- Q( X4 `! F8 B
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
. J1 E/ z; M) _% `( {; }let note (item 2 trade-record-current )
$ m' {, C: e& W# [set trade-record-current
7 `! r7 N+ y9 [% d/ B3 M(replace-item 2 trade-record-current (item 3 trade-record-current))
+ M  T8 d6 v/ \6 Y- f, c% W: V
set trade-record-current: M: {+ n0 U+ h- \
(replace-item 3 trade-record-current note)
( }# ?# ~+ |3 ~/ R* z/ G' v0 D) T- |+ P2 G

. W! V/ R8 G# j- lask customer [
8 [7 u  W7 }5 q9 I& p# V. C) @update-local-reputation+ J9 ^; w! F) ^$ k, `9 S
set trade-record-current
& f( f; Y0 T( g! _(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
/ Q/ i" S- d' K! s& s( w; S5 B
]# d! m# g. O4 {$ I

; o; l, |. J' O) ?
9 {7 B/ ~% a8 _( o9 j" {0 {
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer' e+ b  d2 y, z
/ A7 q: S$ s% f( g+ S( ?; D
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))7 L. w; ?- Q" E- A4 B+ O. \& M
;;
将此次交易的记录加入到customertrade-record-all6 M1 f( \$ l  d- R: q* ]
end6 n3 C2 u6 I1 Z6 G
2 \2 j! w; u# S& |# r7 E- i
to update-local-reputation: o- Q8 L% D; @0 A% d2 ~
set [trade-record-one-len] of myself length [trade-record-one] of myself
$ J/ Y  M  g$ E' ~% C, W: F+ w5 F# \+ }- N, X" Z  n8 l1 N2 n
* S# Q! A+ H( \) L! A/ F% g% P
;;if [trade-record-one-len] of myself > 3

, \: ?+ }1 v2 P/ [update-neighbor-total6 X+ S, j% k* R$ Z% }
;;
更新邻居节点的数目,在此进行+ S5 z& r5 e( _3 L2 l/ n- ~% K/ W
let i 39 D( o0 H$ n+ W- D! p5 ~6 B9 h
let sum-time 0
0 K0 ^7 k- W' Fwhile[i < [trade-record-one-len] of myself]5 q+ t6 H7 A( H
[# q9 U  M8 M8 e  k0 V
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
  C8 F7 e9 k+ u) _% ^" ?" eset i
7 @8 B: u$ X. Y. s( P5 t9 s( i + 1)
* |# s8 V( h2 Q5 m* R
]
& ?1 G9 c6 ^5 Z: T1 V0 ulet j 3
9 c1 d6 G: c; H8 l( I4 flet sum-money 0
7 y4 ~; A; a- S& a2 ~9 ?while[j < [trade-record-one-len] of myself]% V  u& x# Q# G* l# E' e" M7 w
[/ ]- P7 y* B) E
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)) p, y& m& a& T7 I
set j
; y" X' ]- J% I( x( j + 1)

& M/ s% ^. K5 f# O& `" e7 J9 Q]: d6 P, \6 N5 Z) x& y" {! ~! P
let k 3
+ W' l+ S# r! z: V( o$ l; V5 q7 llet power 0
" f$ a. A, o, e; E8 x# ^4 n- F5 Vlet local 0% i" L1 b, g' t/ C3 a
while [k <[trade-record-one-len] of myself]+ D$ g- x& k9 j2 [- I. E2 a) r
[1 v3 ?, s& {  }0 s, {8 {2 I
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) 1 g4 [( V% ]& r1 K
set k (k + 1)' e+ L$ U+ W& A3 ?! E. i* j  u2 o
]' l" }3 d0 I/ f* E, K& i
set [local-reputation] of myself (local)
0 ?* {8 }* ^: e7 Pend0 X) m4 S, H( x# Z7 N" d7 x, Z

4 M- J! }* }( f; K7 gto update-neighbor-total0 m- b7 R; `) w% ?8 ]
1 v+ |2 L) Q. ^! A/ Y
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
- m. U; R! f4 d( x
1 L! q7 r; G" d: h% b
$ ?  X/ c1 u1 e- x% }/ [- Q) d
end+ O9 c; K3 m. p6 j1 s. ]
) v' {$ s+ _4 x$ d; e* `- n
to update-credibility-ijl & @! L0 N" y7 }; f. N3 y) C8 G$ i9 X! ~
: N- G0 z( T3 b8 ?
;;
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 V9 O, U0 K6 M1 _4 U
let l 0
5 x. `6 }5 F0 Y- Lwhile[ l < people ]9 F1 K7 X" r7 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, Q3 j3 ~0 @2 B$ }$ B- x
[
9 a, u3 w5 m! l- r9 m' Y; k$ Blet trade-record-one-j-l-len length item l ([trade-record-all] of customer), ?1 y9 X! U2 M1 \
if (trade-record-one-j-l-len > 3); Z' R4 s9 P* \; G  d1 ]
[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
8 J# g! l$ b# F( \let i 3
) K# K1 j) }/ ^2 I- v1 q' L- Nlet sum-time 0
( A5 o; ~4 Z$ l7 w6 s8 y4 h, jwhile[i < trade-record-one-len]5 ^6 B( f+ s% ^/ _) f# s
[$ a( F$ d2 Q. a2 U- }3 z% a* j
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
; k7 w* l$ F2 W% r% {. J" |set i5 M. U$ E7 L4 I  k& w
( i + 1)
& n0 r5 z; L# B' ]
]
# V( I0 `8 Z5 b, xlet credibility-i-j-l 0
# ^- x2 U! a* G$ r;;i
评价(jjl的评价), P1 {& h! l* Z3 v+ ]* X' ]) e. ?( D
let j 3
. q$ T8 S) o, u. S# glet k 4- }" o4 U+ u4 v2 n
while[j < trade-record-one-len]
& n- g8 J7 x- Q/ A) V( p[
( ]/ @) U, N- V- {$ c. N+ dwhile [((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3 X% F  c/ d  @2 A% w
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)
3 T" H7 j  L+ |( uset j# ~% i+ M4 F2 A# @3 L1 j# Z
( j + 1)

5 A: G. }& p+ \+ a]( y- R. V3 X/ H6 _5 I  G
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 ))
/ H4 T. S5 U' m& ]6 O) r6 a8 u$ `" |& q, ?. d
% A  Z# b9 p% b- t" ^1 n6 Y- m# R' k, t! n
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))# B$ ^5 P0 N6 X1 g' n# ~2 h& \
;;
及时更新il的评价质量的评价( W- ]8 ^- K7 I: R4 \
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
" p. L: s. Y' uset l (l + 1)
, l2 P( T! d/ w/ x, p! n9 _+ E]
+ Z$ y% s6 ]0 C+ R7 w2 o/ f) cend
2 a+ ^% o: ?. Z& g# p5 u- }4 q9 n7 {: V- b; ?
to update-credibility-list
9 @3 B4 P7 [& G' \4 P0 s6 Xlet i 0
7 n  a4 f! Z- t' e, `while[i < people]
+ \# q9 [! L$ _5 d) U[
9 j. A- t& h. v6 dlet j 0) d- k  [$ ^9 R  |! N9 l; A
let note 0! [9 q# I4 P: t$ \) e4 A$ O
let k 0
* M6 ~6 I# `0 O+ K* q;;
计作出过评价的邻居节点的数目. u* L  A8 s, z0 U
while[j < people]
7 S3 V' _- t) |& n& J[
2 N7 M8 B- I# [, o4 E3 [0 {if (item j( [credibility] of turtle (i + 1)) != -1)
/ S9 y! f, Q  w;;
判断是否给本turtle的评价质量做出过评价的节点* k6 Z& ]; A% T8 j
[set note (note + item j ([credibility]of turtle (i + 1)))
0 u# B2 x0 Y" D;;*(exp (-(people - 2)))/(people - 2))]

& q8 t  O1 V( rset k (k + 1)
8 X( n6 b: y% D" V" N7 Q! x]
$ {7 T/ }  ]  uset j (j + 1)
. c0 g' P1 P( O+ s: C7 g/ c( F]
7 h  e5 P# }$ }. W$ qset note (note *(exp (- (1 / k)))/ k)
  a& w$ D8 }7 f- z0 n7 t, w. }set credibility-list (replace-item i credibility-list note)3 R* u/ Z0 ?) A, G1 N: M
set i (i + 1)
) E! [% \4 \; i]
3 R7 j  M6 a+ N4 `4 k5 ?  `# iend  @0 P+ p5 N% U% Q+ A2 |

: J* ~. t1 e) H& L  Y: Eto update-global-reputation-list* l2 G1 m! ^( E3 G7 n, m5 w1 y/ O
let j 0# K+ c0 \# `% ?6 {& U3 M$ ]
while[j < people]
9 g* S! {- A7 U2 T) x  ~[
& k: D. Q8 a: X1 g2 |% c; olet new 0
: L4 ~7 }- O9 s# L: _* r;;
暂存新的一个全局声誉! Q  m$ C" b6 }% J' D" a& G0 T
let i 0
) r; _1 K$ d" I+ klet sum-money 0" l0 y+ q) ]3 w: {% R
let credibility-money 0' \* e  q% h; f$ C* U1 s/ l$ y
while [i < people]
* `( }5 z- z+ O: b- y0 a7 `$ ~[2 M% y9 |& k; n2 @$ R
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
; S1 @& f- o* E, P& p3 ~set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))4 T# r9 _1 p* C) b4 y
set i (i + 1)
, g* I: V. l0 \; h# f, j]9 A& d4 U' h9 m3 t* M7 P
let k 0
) p. E; x% t2 F1 i! Plet new1 0; H+ \! ~* o3 v) W
while [k < people]
( S- P6 P: g; Q8 p1 ^2 d[: b! @4 Q- f$ J4 j
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)
( ]2 y* {# H: [( S, d+ c4 l) aset k (k + 1)# q2 }7 G. c) p/ ]9 b3 G
]
: i" @& X7 a& h9 Mset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) - e1 I- h0 C7 c; T4 Y" @- o
set global-reputation-list (replace-item j global-reputation-list new)
5 {- s0 v$ B# R( C$ L! J0 v/ P' |set j (j + 1)9 j; G* e; X; ]- U( i
]
* v+ P+ W) |5 H1 d. ?, R5 Oend; d: J" T8 p5 k% ?: x
+ g5 y7 r; k" n# s# }/ `4 L3 f& z
; D# q4 d, O- M+ ^# W2 A

: y) y  R) B3 P$ |- x& S  Cto get-color
+ t% b/ i. q2 Q" G
) L  u  D; Y: w( v9 [9 Sset color blue
* d/ g3 T4 K! G6 W* A6 q
end
6 e$ L2 [9 g3 N8 c" A# M2 u$ x* t5 d  A: i3 u6 S: b* a$ X9 j6 X. M
to poll-class0 c% F6 O/ l; a6 ?
end! n# Z% {; }9 D5 J
) A2 }% T" n2 e1 {  n/ n4 c* w
to setup-plot1
  _/ x/ h! f4 Q- Y0 t
" \% M; T7 h! g8 ~$ P  _/ |2 mset-current-plot "Trends-of-Local-reputation"

; _$ o9 Y4 s2 Y( \" s2 F* F0 ^. O# |+ O/ v5 l* t7 b
set-plot-x-range 0 xmax
& j0 W' e! R" i+ T* q0 n

1 D) J  e* H' D$ g( Sset-plot-y-range 0.0 ymax

; }" R1 K0 }4 [6 @" rend
& p: w5 @: |# D
0 l; ~8 O2 ~) ^4 qto setup-plot2
5 X8 n6 @; p- W, V- w+ J' |; q% f( k1 z8 M; Z
set-current-plot "Trends-of-global-reputation"

% H5 B: f+ u+ d( D0 Z/ M+ W. ~( O; U% U
set-plot-x-range 0 xmax

8 f# Z7 R" y( D+ K3 K; U8 X( e# l+ V( {  y  K
set-plot-y-range 0.0 ymax

: L7 W) T/ v6 Hend
% R+ h1 h7 Y! l3 G- v) j. i' d6 [- S9 T) G) L) i' k$ Z: \; O/ @7 J
to setup-plot3
2 H1 g: }6 H. s
6 `7 O) U5 a# |# _% ~: w, Xset-current-plot "Trends-of-credibility"

9 S$ B3 \4 T( M  X3 ~) \. n6 X/ R9 T" [* S
set-plot-x-range 0 xmax
6 K+ M* a4 f6 H$ T! B
2 g& k. O9 a4 j3 `* o& q5 m' R
set-plot-y-range 0.0 ymax

. H5 e" d: I0 O) yend4 d; V, Q8 C/ ]5 ~& c, ], `

, w$ t6 F* o7 q0 y, lto do-plots
$ N' ~6 I" m# p& `, kset-current-plot "Trends-of-Local-reputation"
) b% ]3 w' \8 C* v1 Bset-current-plot-pen "Honest service"
% y$ |8 k; D* F6 c' W( u. Z8 [# F! cend% i" `- Q, b; U6 V
: U5 G: \5 ]" K; z: f2 _. ~
[ 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./ A# J9 J9 C0 _- t$ Z
& w6 H1 L" V( p
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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