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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 n( [& I3 t3 L! w- N' s
to do-business ' _) F5 H; p; Y* w, [! e
rt random 360$ W6 i/ J" r' t+ j
fd 1% T! _6 l# W  [( I: a# }
ifelse(other turtles-here != nobody)[, i+ N9 ]0 c+ |# 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.
& |: l1 n# G  q* N4 w0 K   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
* {1 D4 F+ Z  V$ y/ F) j7 U6 H   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
+ ]; J1 i) o9 f5 v% i& J/ s; M   set [trade-record-one-len] of self length [trade-record-one] of self* p: Y( [; n+ b/ s! i7 d0 M
   set trade-record-current( list (timer) (random money-upper-limit))
, `0 J7 e, [: N% ~* S
1 L& B' w' i% G3 Z# M# y/ W( N问题的提示如下:
& t+ `6 e/ m1 Z2 f, O" u
9 o8 d9 h9 w' C- q0 merror while turtle 50 running OF in procedure DO-BUSINESS) J& U6 i9 R& Y
  called by procedure GO2 |; J% S6 F+ F% l  t, w7 C
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
* ~; Y) D/ y6 \
(halted running of go)
5 E2 l6 i& K& J+ Q4 v6 h2 m5 j2 X0 K0 x- O% t" Y
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~~" V2 m, Z& p# c/ H0 I& G% Z
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
/ \  x/ f- G' e9 qglobals[
( K, O  k$ o+ Xxmax
4 ?" I, x% l- y; `* _2 v) W; E2 Wymax
! L1 ^- V1 `5 F0 Yglobal-reputation-list
& E8 N" q4 w2 m7 V" {2 x$ h1 Z% B: p8 A) V( [3 D& d
;;
每一个turtle的全局声誉都存在此LIST# N# O% j' j% H  X/ R. ^
credibility-list% [% `' A1 l, O; S+ C
;;
每一个turtle的评价可信度0 ]! V& o; L# z6 V
honest-service
/ u( v& S, f5 B( G+ ^+ aunhonest-service+ c& q# p/ W% B. _2 X* w$ i) G
oscillation
7 `& H0 {- M! @% g  e2 orand-dynamic
, J8 l' l$ m1 a' n) H3 w" w* s" a]3 {1 U4 j% K; X& g. P

& V- v6 ^) H$ X+ {% qturtles-own[# K) ?/ ?  }& V' g; ?& Y/ z
trade-record-all0 T- K1 U0 @; q% G5 Z" s
;;a list of lists,
trade-record-one组成6 a8 G/ d' l4 p1 A: q) k( Z7 \
trade-record-one* Y5 u$ h' Z  k1 A5 l3 _
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
1 {& D* q/ z" h/ h
: C1 D3 j# q6 {: V9 s0 ?;;[
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]]
+ j+ S1 o# ^$ e$ ntrade-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]
' o1 C2 g6 f4 E, P: K- tcredibility-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
# A/ u7 M7 z$ w: nneighbor-total4 d- ~, A* p( z6 _
;;
记录该turtle的邻居节点的数目: v# Z- I) X8 ^6 T& ^
trade-time  r. K' R1 u3 p% _* F- k
;;
当前发生交易的turtle的交易时间
# H1 Q3 ^' ^, m/ H% \2 Oappraise-give# d& Z; M9 W9 c8 N3 p6 g
;;
当前发生交易时给出的评价& `4 }+ m2 v, }" U& B& X
appraise-receive1 t0 s  q6 I* e+ D2 G0 }  `# O
;;
当前发生交易时收到的评价7 e/ f; }/ {$ J) \1 o
appraise-time2 V5 Z. ~+ f! A% f
;;
当前发生交易时的评价时间
6 b+ i" T1 f! Q4 Zlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉, q9 }: \( J& j) J1 B  T& r
trade-times-total! R  L, L- d/ F- D" T, g1 {$ u5 W5 P
;;
与当前turtle的交易总次数
! _5 z. T' p5 B6 btrade-money-total) O% u2 n1 A1 D6 ^/ `
;;
与当前turtle的交易总金额! o  _, e+ b2 w/ k5 @1 n" D2 ]
local-reputation! h! p1 b4 P6 b' F
global-reputation
3 a, O" V' o  a' c. xcredibility5 F) i3 R1 ]% r
;;
评价可信度,每次交易后都需要更新; @$ M$ J; a6 a2 l: O0 v+ i
credibility-all
. {" T; J$ p; Y# Q7 I5 k# g- ^;;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$ w+ M* |9 ^: W* @

, ]- T$ C+ m- U& T! J  };;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
% g! J8 x  W* W$ c, [credibility-one
- |( W( ]: x; L;;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
8 F( G  |4 B0 z) ]3 }/ Tglobal-proportion
# r# K- I. c  G% Pcustomer2 C+ M' q5 x* W2 \1 o# D% M
customer-no3 J( N' g+ G) V# P5 H; `% b8 x
trust-ok2 Q+ y% A/ f6 ?* N+ W6 k+ h
trade-record-one-len;;trade-record-one的长度
6 Z7 B! l. T" t1 @( F]
7 a0 p2 h; l- p( T
" ]) E6 b7 N% N: p5 D;;setup procedure
5 o& q0 S$ \$ h8 p5 |, T6 X3 }4 f! j! H# Z; r( g) g, F% K
to setup
2 `% q0 u1 |# U. G5 D# z# R  |* A
/ s( d+ f6 \% R& i1 v% r* ~ca

  g' d0 v+ t  j* F3 j$ G- w" T, T3 x* [
initialize-settings
3 z# V3 B' P" |

2 L: ]/ [5 s! S1 ~' d+ ^crt people [setup-turtles]
8 A& _+ f: p& `& @

4 x3 g6 k; s1 o; l# G2 V7 M! T- freset-timer

! p' N9 E, Q$ b, C: p' p9 Z" e/ R1 D: z
poll-class
' U  X& G- S  H/ }* ]5 p

1 `7 X4 j0 T" e: Usetup-plots

+ N/ @  C3 Q% ]& H% o. Q
5 N" W+ e! H5 _4 r; l  _: u" Zdo-plots
' b- P5 T; c% ~3 R/ n
end
5 l* [6 U4 |6 b5 A$ h- V- y, m2 d2 ^" M$ J  ]5 y! q! A; r( c1 y
to initialize-settings- o& K. e. k6 A/ ^
" z- e; C  E; x/ @" h. p' M8 B$ L
set global-reputation-list []

! Q% \( x; Q, ^8 Y' M/ {7 q! [8 b* h
set credibility-list n-values people [0.5]

  ^( x$ A/ e1 \4 I% I* h+ n1 w" d- R9 V1 A8 x
set honest-service 0
; U6 T& q! j* H% D9 ~
2 e( p7 J8 P8 ~5 X5 v3 U6 n0 G
set unhonest-service 0

. w! U/ B; n9 Z( w7 U
0 a/ n9 c/ W/ Jset oscillation 0

. q, W6 M! L- j  i+ A
: H4 Q& U, }4 H$ p* `; d% d( tset rand-dynamic 0
* l* J+ F- {- c
end* y" }+ k' Z2 Z+ _7 J, q
/ m  G. B& O8 L9 P4 l; B; @
to setup-turtles 8 O. D/ u# k" @. a8 {) h, H
set shape "person"( Z$ I4 w8 k7 ^# D4 x
setxy random-xcor random-ycor" x2 n% M9 o( b3 s4 H; k
set trade-record-one []
, i' B/ H/ u5 A- X% g8 b

+ j. X6 t1 o2 v6 a0 H6 L, M1 m" Vset trade-record-all n-values people [(list (? + 1) 0 0)]
2 J0 Q# c; K! }+ O" C9 x$ m
8 w: [- I: X! _8 p% `0 t; f
set trade-record-current []
1 ^, K9 a6 ]: @set credibility-receive []
6 T9 a9 y0 b$ M/ bset local-reputation 0.5
8 N" A4 k5 _/ h7 S9 S2 r4 d) Kset neighbor-total 0; r7 E  I0 ]2 p- n4 Y7 T
set trade-times-total 0
) M2 O! ~1 P! G9 u7 b" bset trade-money-total 0
8 u0 X& R% R. K' p! N: ~set customer nobody, H% R1 l4 w" x6 ^1 a  |6 b
set credibility-all n-values people [creat-credibility]- W, L7 p4 y( H: I9 T
set credibility n-values people [-1]5 m: O0 T1 ^, j( [3 C+ s
get-color
! ^! ?, H+ y, o# d" H* [
- ~- V9 T- y# `0 s) F
end2 N6 Q9 p+ T1 P/ U! z2 [% r# N, d

  q+ J* u6 y/ ?3 Gto-report creat-credibility
) s; n' s8 H# |2 j6 ~report n-values people [0.5]
* i& ?0 ^* Q3 vend# K! a3 s* Z0 z) D' k5 o$ U* T
! y0 \: E5 n* t  m  }: y) W4 O$ F
to setup-plots$ q% L$ Z- X9 T8 u+ ~4 a

8 N! b  h- g. K+ A# yset xmax 30

2 O. J: c# A- j9 b) D1 u  H3 k$ j" N  D4 z
set ymax 1.0
$ z4 d  f0 n" y
( w8 z6 I- Z  d, A7 ?
clear-all-plots
; l9 ]8 |- t+ j# J6 G. [: ~

  ^! q8 q  i8 n) x, jsetup-plot1

5 V3 \4 O4 a& ?5 r/ R
& ~; |( U' ?" l" C$ T8 Dsetup-plot2
, S% J7 [* I  E
) n7 L; H1 G3 E: i
setup-plot3
2 s2 H, W2 d$ I5 _/ B
end6 t+ e! Q* K& S: e/ t6 R

, S. |- l; @/ v, a8 {+ [' m;;run time procedures
8 i+ o1 r6 u/ o" [) G
( U1 }$ a" o' Pto go8 t  ?$ {8 i) U

1 @$ p2 l' \  K# n! I  Z: Uask turtles [do-business]

1 A+ x! A8 D6 `) [; X" ~! p' d# X: Uend" Z* l# Z0 w7 \1 F# {+ W

' m0 t9 x9 h, [1 k7 f& u' V3 qto do-business 7 n+ T  g. Q3 C. d; N0 y" Y
" `; h. o4 _% j5 x9 r% F
4 p6 Y& P6 B" H2 K. G' X4 @! N8 A
rt random 360

* R  @! P5 d4 M- N; b7 k4 s$ h$ u6 a& B2 L- k8 {
fd 1

3 m! C5 l# I; F7 Z: J2 P$ v
( l' j% }, M6 P) O% Y, C& a; c+ }1 ?1 m; `) Pifelse(other turtles-here != nobody)[
, r% ~% ^' `+ k4 ?
) _( H% ]& p% ]- V7 b8 \9 Z9 t
set customer one-of other turtles-here
, ]8 I. r# F+ Z% r' t6 V- z

* L! u  [: t  h;; set [customer] of customer myself
! t) j( m) s& J4 \' z3 {" a( j

8 r* Z6 A1 k- ]4 S/ A) I; U. y* }' sset [trade-record-one] of self item (([who] of customer) - 1)7 j& J* r, L2 j5 }5 _) j
[trade-record-all]of self* q  E; z& I8 i% \
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
5 N3 Y+ a) x. \6 G( U: ]
$ u0 A! _- M& i0 o0 I% U; R$ b
set [trade-record-one] of customer item (([who] of self) - 1)
+ z7 L; ^! k5 c) f1 @! Q[trade-record-all]of customer
4 b$ q# ^3 T, P: @( q

4 u: N4 t" t' M3 k+ aset [trade-record-one-len] of self length [trade-record-one] of self
3 T. Q( {- P# h. Y9 O- C3 ]7 ]

) r* m. t& J1 L* Dset trade-record-current( list (timer) (random money-upper-limit))
) A2 R. Q7 ~, n/ |9 f6 G

8 X1 E- K; ]# M  {, Pask self [do-trust]0 u. I2 y6 P( G8 e& ^
;;
先求ij的信任度8 ^. @6 m& F: y0 `0 i

$ e3 |6 p2 Y9 V* m) nif ([trust-ok] of self)
! U, \$ y) E+ U" {1 \;;
根据ij的信任度来决定是否与j进行交易[" H. t% z1 u" C8 f# ]& y2 x
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
1 B) G- C! |9 k. R, p5 @! T6 G) {$ A7 B' A& A$ f3 ^
[

9 e* M5 I* M8 T- w# T
8 Y- R6 k7 r9 g* H4 Fdo-trade

, o# k0 U1 W3 |7 r. j' C
- B& w, r: S7 n1 P( _. K8 rupdate-credibility-ijl

5 T7 H! p; D. R- r, E6 a+ \% v1 \4 p" y
update-credibility-list3 ^6 t4 k" r$ ^' P: X4 K# P+ c

% v9 M7 ]* B, j/ o/ ]- V  i: e
8 w7 F0 w9 Y" m; ?% e/ t. X  N  Lupdate-global-reputation-list
# T3 S  I! a# [6 [% e
  k& p3 Y0 \# O9 p+ m' O4 F+ f
poll-class

: @( h7 _/ p% t( P8 F# D
5 B7 i5 L# s/ g# Z# pget-color

2 Z1 |/ Q7 u6 m8 w! l3 j
) h1 J4 ?) n5 p4 x]]
5 P4 m: z4 n$ w" T  A( H3 d! {. y# g
;;
如果所得的信任度满足条件,则进行交易
6 E' T  ~: U0 i: Z! b2 M- V. h- |. t! L1 ]# [3 ]
[

) L( r& C# ?- {+ q5 L: t  R9 l& A0 `$ v
rt random 360
; W/ J7 m* B& k3 s! o/ z$ [

1 G& c* y. d" z4 Ofd 1

. @+ d( ~  Q/ r
* d, y( S8 N; P6 q$ Z]

) j0 P4 n$ b% `7 T' J; C- @9 w- ]; Q1 l6 c( X% @8 R, `
end
+ z3 }6 E  N2 `  Q- h/ G. X
4 \& ~4 J8 P2 v/ Q8 q1 A
to do-trust ; F: g! K' g& W" R5 j$ S
set trust-ok False2 T% Z, A9 Y, ]- h- m' O- {+ N  i

% ]9 |2 ?/ k) K( Q! J/ T& [
2 U# B8 V! V) i% K8 \! z
let max-trade-times 0* E# j# ^2 F- E7 Z7 l5 Q$ w
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]5 B0 ?6 n$ w3 Z2 f5 V
let max-trade-money 0+ D* ]' f4 D# d) `( c1 U7 B
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
+ W& l  F2 @7 f5 Zlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))% M) S0 p2 s& x2 V3 H

; Y0 T6 k8 Y2 i* K4 K! S' g
: s, b& U" r5 ^1 H5 Z# F. W
get-global-proportion& S8 z: ^0 y$ J- q* D
let trust-value
# ]8 d2 @" |& I' c: Llocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

4 x4 B0 g. e) I0 cif(trust-value > trade-trust-value)
" ~* u3 H0 |, U: u2 P6 m) s[set trust-ok true]" q/ z5 ~; f5 `( }
end
' X7 ]8 ~/ T1 s8 n3 a% v, K5 ~0 R" ?/ Y
to get-global-proportion: i6 F1 D% R( P' h
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)* a; c7 |/ |1 y- G7 L
[set global-proportion 0]
' L: }9 ]6 R0 ?; T# ~' M, l3 r[let i 0& Q8 B) p& N7 n* Y. {
let sum-money 0
0 b3 v3 l; i0 Z: Y1 S! b+ {6 L) A5 owhile[ i < people]
- ~( l" V8 S% W7 m1 `) L[1 Z) A% H. d( F  L1 b0 E* V, W' `
if( length (item i
: c/ ?* v' x: |[trade-record-all] of customer) > 3 )
; u' U- }  x. [, q
[4 j3 J+ c, `$ f) e6 N& w
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
  f: D# _5 Q" ?& m]* ^2 x3 E$ P  ?. q. P; [
]0 a0 ~% Z, V1 N4 Z- J/ I
let j 0; K9 m; `! a3 L2 Z( B% U
let note 0
/ g, V' S' F2 H* X7 w. Wwhile[ j < people]
7 N# C  P, }1 c# g[8 T9 N4 T9 b( j1 V0 `# n5 d
if( length (item i
9 Q. g* i% ~1 F2 k[trade-record-all] of customer) > 3 )
2 R8 {6 E$ c/ Q; i. S
[9 Q; y3 x3 ?! E2 g& z; [) U
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)  f1 |5 a# c7 C
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]- q' q0 \5 v* V; B7 t, Z2 G
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]+ q! v) l' H. j+ k- S7 X
]. ?& m7 C5 L0 A5 @/ |% X, y) F  \
]6 A' V- ^8 H* d, E0 X; r1 F, R" @
set global-proportion note. A, h. T5 _' b7 a
]
5 ~7 V: s. W9 ]* J; r& e+ N7 U; l# t0 vend
, |* b; {7 N/ r/ D" S/ Q
9 L+ `& V. M; d& G& Bto do-trade9 M: ~* O: t6 g2 r, x
;;
这个过程实际上是给双方作出评价的过程, E  n% c# H: B8 z
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
% u  k9 z/ X# i# Sset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价2 U" ?& y+ g* J; R
set trade-record-current lput(timer) trade-record-current
$ J' g) O7 v. Z5 t3 D;;
评价时间
6 f6 v* x2 k- L7 ?9 b" wask myself [
3 Y/ R* _. C# [update-local-reputation
' C, S2 D7 U5 s6 w2 `set trade-record-current lput([local-reputation] of myself) trade-record-current% t- R1 T! }% p5 k. D4 U" g6 R, o
]
; c/ E/ K9 D( |. p+ i6 k( J6 O' T8 f# Rset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
8 ~. O1 b. z( n: @4 ~/ D5 u;;
将此次交易的记录加入到trade-record-one8 ~: z8 P" f2 o, J
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)" M9 B) q) b( h9 c' N, \
let note (item 2 trade-record-current )! Z7 [1 y0 L4 {: f1 U) \7 z. [- U
set trade-record-current1 g% A& ^" @$ ~0 a5 J- _, P+ a
(replace-item 2 trade-record-current (item 3 trade-record-current))

( i% j, S7 U3 `  h+ gset trade-record-current
7 B2 q; F) R. E( R0 K& x7 O1 v1 M(replace-item 3 trade-record-current note)* L* s1 S% F; P
; o( w$ ^/ e( [# Z. O' Y' s

7 y  m, R$ `  v8 U5 [ask customer [
6 z9 A! F" z8 k# S! M( \update-local-reputation* x1 T* l+ V' `: D  {1 n$ A* Y
set trade-record-current
" o* x3 w. p7 Z5 b(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

8 M5 U: B. ?( s$ x]2 n/ Q8 }" w) ^* ]8 w2 g, d/ ]! ~

, ~3 d9 t9 A: R$ X1 z7 W8 s
; ?. f( c8 C& ?  C' N
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer- H  M$ v; a/ Q2 B: K8 l8 g
% }0 s4 k' X# [' M$ H- W' F
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
; P# o* P1 R1 f, X7 x% L/ z% b7 v;;
将此次交易的记录加入到customertrade-record-all* d/ |% W+ V- C! b$ ^% I
end, i) {# |; G  j1 i  f' O
4 j/ {2 n% h$ ]) C, u/ O; U7 c
to update-local-reputation
+ w5 g; W, ~7 V" N" Bset [trade-record-one-len] of myself length [trade-record-one] of myself
) Q( @. Z& U$ F7 j* B
, M. v0 v" U2 M& z0 @* u" k6 F! |7 T. w" i$ T0 f5 C; x
;;if [trade-record-one-len] of myself > 3

% `4 C2 ~" `* V$ p, T. }$ nupdate-neighbor-total
* p: [  K) s2 r/ J;;
更新邻居节点的数目,在此进行
- o- M* R* j; K. y' W, u2 Qlet i 36 K9 T9 P' G2 P; v9 h
let sum-time 0
' a& b# e8 G1 @while[i < [trade-record-one-len] of myself]! s8 D1 A: h5 _/ }
[
* }$ d5 `' l/ ?! c2 L8 ~set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
% J* W" L  ?+ U* ~set i
7 e. F& u6 k2 ?( i + 1)

) p! e7 F1 D" P; {# c+ H]
* Y4 w: [2 _: E! R4 olet j 3' @9 f: D) `# l. b- ^
let sum-money 0
5 J9 R8 Y4 R# M- e2 vwhile[j < [trade-record-one-len] of myself]
# W0 c( y9 Y: ]  Y" B[% p& z1 k; c2 a2 C. }& |6 p
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)' q6 W2 I1 t- b/ C9 G$ R# ]
set j
! W) o  I) |3 \2 y# w: V  T# p( j + 1)

: Q# _* t+ L+ ~& D" `9 t# x]
' S6 \2 H( A" n) jlet k 3
) z5 O5 u" f3 v, E- N# W9 Qlet power 0
7 r0 A8 H* G% ]  _" c  qlet local 0& G/ R% K( n/ E; X
while [k <[trade-record-one-len] of myself]
8 e3 F( V1 Q# z- S; X7 G! |[
1 }0 ^1 ]" G: V  xset 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)
6 @5 r: ?, D7 d8 W, q# M) Aset k (k + 1)5 o: M0 R3 Y5 ^. b7 r# [0 V
], y8 n! _2 h) d
set [local-reputation] of myself (local)
/ K3 b7 o4 I8 S) ?3 iend: ~: d/ D+ w: g/ I7 n; Q

- K6 h: t+ ]% J2 H4 C( xto update-neighbor-total
5 b* [2 Q4 R' \$ f2 V" u# |5 y
6 w! {3 `# m) T. ~/ D" \if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]0 U$ V7 J2 z% G! D

8 M* n1 z' H9 P3 f8 S' b
7 |' w8 O  G/ @2 v# B7 \* Y: v
end0 l/ K- i' _5 T' L9 W9 g3 T

3 P# y2 x6 r, {% e; m, Oto update-credibility-ijl
2 E5 e6 y) ~# T5 _! r! A& n% R* ~  v
4 S& x8 y- z: m: P1 R1 M; ?;;
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。+ M( v! C6 J" y3 G6 x) f, c
let l 0, u. _7 ]  _0 |
while[ l < people ]
# s- q9 U) ~! Q/ T+ [( B;;
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- O4 u" e6 w$ s0 `. W9 ~
[' g' P; R5 m0 Z7 H' K
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)+ ~+ `9 |9 t" e0 t# ^- r& L( P
if (trade-record-one-j-l-len > 3)
- x3 b* S) c/ O+ o2 O: `[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-one6 w9 q+ u: }, p5 g/ n
let i 3! `% Z( z: t, J0 ]0 \6 h. E$ e
let sum-time 09 L' K6 `+ ]  O3 Y2 L
while[i < trade-record-one-len]
# _0 Z0 S  d6 P( I. ], o8 Y[
( V# S; G1 F: `: qset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
* ^2 A: I' u& ~" j" m) r7 dset i5 K7 w, p2 _4 J1 d. {
( i + 1)
* I) R) T8 I. ]0 d
]
5 U6 y2 A$ f% U2 T. v% k1 w4 Klet credibility-i-j-l 0
2 i& m; E! ~! f$ d; x( d;;i
评价(jjl的评价)
' U! a2 H% m0 N" vlet j 3# U7 \: Q1 W$ H4 J" w* d
let k 4
4 ], a8 P5 I1 x( i) Zwhile[j < trade-record-one-len], z( f' Z$ e# i" N5 S( s% \
[8 @; J+ a, B- D8 W) G# ^
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
3 D- A2 a' l+ L* o5 F( kset 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)0 }$ s; V4 F* r& x! N! r
set j
6 c& y' ^9 Z; v( a( j + 1)

3 Z; O, W9 `4 N, O0 l]+ i9 j- ^- t, }
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 ))
, ?) [/ R* K6 l4 o) p) Y0 s
2 F) A) `* T6 M, V1 N/ Q9 w2 L- |

# C) ]5 `" Q/ D: j. _9 x4 dlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))! v+ r0 g- u, R0 {/ G1 P6 k+ j, k
;;
及时更新il的评价质量的评价2 O, z% [0 E* O. i; }
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
: Q, G# a, I$ _0 ?- z& [% t9 aset l (l + 1)
5 H6 T" a, I* f- p]9 m$ j! N6 N' X' r  a
end
3 f6 Q! I- G. h$ x; ^' G& w, f8 M+ w; T' ~6 i8 r& V8 i0 }3 g' |  k
to update-credibility-list- |, y" c$ H. @2 Y/ G, J2 Y
let i 0* r& e2 u' ?/ n6 i4 u1 ?2 W) X
while[i < people]
2 q) f. Y8 ^, Z( E[
# r* c) _+ H+ n  v+ Slet j 0
* F4 C# o3 r1 A  A7 g1 e+ Jlet note 0' C; F, y, A: Q1 P% n
let k 0/ [# d" ^8 u4 J, ^' ~  |
;;
计作出过评价的邻居节点的数目% G0 ^/ h, H6 ^- m) u
while[j < people]6 f/ m: m! Q% y+ c
[
! k7 K: l' n4 `1 D( x5 k$ Dif (item j( [credibility] of turtle (i + 1)) != -1)
# D: w: Z/ B- W. y* P/ G2 E  C;;
判断是否给本turtle的评价质量做出过评价的节点' V8 N8 z+ G6 h
[set note (note + item j ([credibility]of turtle (i + 1)))
5 f) |+ t, z* {( E;;*(exp (-(people - 2)))/(people - 2))]
- Y2 Q: }" Q' d; a( ]
set k (k + 1), h2 l  M' @6 @4 e( s5 b
]
2 d7 _0 j& [+ ^+ vset j (j + 1)/ W7 A' K: k; f( I/ x
]
& Y( e+ K. B; |' u8 A. o7 Nset note (note *(exp (- (1 / k)))/ k)6 j% a  k# h/ _9 A/ N# Q
set credibility-list (replace-item i credibility-list note)
: _6 v5 N- a# D* l" `, M+ Cset i (i + 1)1 W* C" `. x9 R' a2 ]
]
1 q- I+ i9 o  h) o+ `end* L5 Z( T/ u0 p8 B+ g
9 O) o9 ^: w% n# a* x
to update-global-reputation-list
3 {7 e5 v6 N4 b# f' B) Vlet j 0
% ^0 x/ b5 V8 D& q' V$ }while[j < people]
7 b% ~0 P# `: ]6 z; }4 \* j$ H# x7 ?+ ]" ~[- O* `  r# V* u9 T
let new 0
" P% I# E- |5 d$ H;;
暂存新的一个全局声誉
- |6 u; `" f) X' W' plet i 04 o: v* c- K( t2 o
let sum-money 0
: U4 }5 G+ m- Q" c8 V$ mlet credibility-money 0
1 h- T9 [; ~* e" \3 ?# xwhile [i < people]- \9 V2 a2 x$ n
[
$ r0 ~$ U  H! V& {1 g9 z( Zset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))8 \- ?$ s# e: p0 ]% `. _: G
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))* O- m2 [9 k( d. @2 D0 {
set i (i + 1)5 d% R1 K* y. e* s) T5 g
]- |' a6 [( \! i
let k 0/ S* p5 r8 B! n: O9 V7 O/ |
let new1 0/ y. D0 z/ g1 y5 Z
while [k < people]
* ]: }) w: s  E[
( t& k( }+ y  y2 X6 oset 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)
7 B$ `0 v& [3 f4 nset k (k + 1)
1 E0 c7 ]5 I  q8 u/ D! h* `], L6 G/ G' O$ i8 D# S# {$ k( c
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) # E" f8 j& Y6 g2 u. I7 y
set global-reputation-list (replace-item j global-reputation-list new): ~( M* X6 a% V5 y
set j (j + 1)6 {% E* _# Y5 ]2 ~1 p
]
" I$ d& d+ [: W+ G0 H* H# B' \end5 K+ f4 a' Z! Q5 ?1 p9 {
: E. o- c3 n8 C: N5 P- I7 }" d

1 x  `7 J+ ^* j; |/ P/ o; ?1 `5 Z( _) |
to get-color
- d3 H$ \2 N6 L1 n$ }8 V1 |- h0 t6 W  C# t
set color blue

2 [" I) v: Y  v. j: S% c* Q6 lend  ~4 m& ^' A) r1 G
' m' f+ m1 Q: S0 C
to poll-class
" }' w$ A  }7 E, f! r$ [0 @end
, `1 l0 ?7 J3 [0 b+ i% M0 f9 J/ S4 W( u4 `' D  ~& {
to setup-plot1
4 N6 c& \; w' J. X1 a9 y
/ `6 _5 k. I6 {" A  X9 @1 S; Yset-current-plot "Trends-of-Local-reputation"

& c2 |: a! n8 c. S. u" X/ _' A, s
$ l" c& E( w; m! R- I* I. Cset-plot-x-range 0 xmax

5 i- L  v, d& ]5 v5 c5 b- \5 O. B+ l8 G3 I- u: ?2 y
set-plot-y-range 0.0 ymax

% R2 A& r- @1 V9 d7 qend
' F# G+ }9 ?% l9 ]
% t7 R; C' Z8 y$ R# c2 v; G$ H8 bto setup-plot24 b) ~  I. w3 X9 J
5 K# D  T# d! \' d5 W3 C( R3 ]  m4 G' X
set-current-plot "Trends-of-global-reputation"

/ S. i% G( S/ n% V/ ]1 F* K8 B4 u2 m4 \* e# \0 W
set-plot-x-range 0 xmax
) E! v) }! \0 W! b" j7 [3 v

& J: K$ [# k" o8 E3 L5 Aset-plot-y-range 0.0 ymax

& o2 q* t- ?$ l8 ^4 a& x( eend8 e" L3 y4 C% e, ^! y0 Z

% d' }0 k" v% N/ M$ p" v- Mto setup-plot3
0 _8 N  Q  f: ~& Q* A. o1 d. g- ~
8 w* [! G7 l# E+ H0 }- f/ |set-current-plot "Trends-of-credibility"

$ u! s  k8 l1 V. g# Q
; m+ @5 W# J' d2 |2 q  R6 [set-plot-x-range 0 xmax
* G( Y9 g" g! x2 `* n

' ?  d# c- m; ~& ]2 D/ A" `7 uset-plot-y-range 0.0 ymax
1 |% e6 B& w+ z8 V
end# L( t! U' @* V3 D  ]- I+ f8 v
' E: D' o' k1 `2 ?9 F$ `
to do-plots- R8 Q; O6 {3 H! d  o8 k
set-current-plot "Trends-of-Local-reputation"# X/ h' p  P- J' N4 I
set-current-plot-pen "Honest service"
, A# @" A9 m" C( f+ x& y% B3 i) uend6 q5 V! [9 f4 u/ f: F4 v

# m, f# T- A3 H- D) `& o[ 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.2 p: y+ e7 L# u7 o5 e
( i7 d$ N6 Z5 |+ h
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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