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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:
/ e' T& {3 }% C, L4 t5 \to do-business
! g& J6 E( V" ^& Q3 l% x rt random 360; G5 C7 W8 X2 `+ ?5 I% v* [; y2 c
fd 1, R1 b& m, [  ~' O5 O
ifelse(other turtles-here != nobody)[' L% B; G/ c6 i+ C4 T# ~% s
   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.
9 t3 [5 I+ a6 I' G   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    , N, h9 \9 k$ R4 L0 H7 F  z9 w# L% |
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer. ~3 J" Q! C+ j0 ?0 y/ g# A+ P3 l
   set [trade-record-one-len] of self length [trade-record-one] of self. \# X! |0 E7 z" k
   set trade-record-current( list (timer) (random money-upper-limit))  C" p7 |: |$ @' ?- y
" S) O5 s4 L' T- y  ]  H
问题的提示如下:6 i& @, V4 ~4 l+ N& Q/ ^

0 X  m1 ?( N: V' \' U- `. V- w  _error while turtle 50 running OF in procedure DO-BUSINESS* @# E2 }* O8 G# Z% Z. J; g
  called by procedure GO
+ m  f# ]9 e/ eOF expected input to be a turtle agentset or turtle but got NOBODY instead.; S' o/ Y* q; V
(halted running of go)2 J! @* a4 {4 a
) J! }' k4 L8 N! B
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~~
; f" ~2 W( F; _3 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
' M; ^5 K2 @" V; ]% `. vglobals[5 R# O; j; j, L6 h+ C
xmax" l2 w6 _& V8 Y$ ^0 ]- u# q
ymax* A/ ~+ e4 R0 q5 i7 a
global-reputation-list
2 u: A# f; t+ u! \% B
6 Y7 q' z4 J' w  X# W( P;;
每一个turtle的全局声誉都存在此LIST6 ~- Y8 `0 ?7 L* O& |
credibility-list
( y1 m% `$ i% O% Q1 _;;
每一个turtle的评价可信度
# {/ [. G7 Z) p+ Jhonest-service' r* u" l8 ~: y0 i9 {9 C
unhonest-service
2 Q4 y* _3 d2 J; Doscillation& `0 W# a2 D6 G: I: V/ a
rand-dynamic
0 @% B  E$ n! q; C9 D% b]
* r3 I! W: m5 o" g* S/ ?8 H& j% f, c, A; n$ @2 J
turtles-own[
4 K  C3 x$ |$ g: F  R: Jtrade-record-all
) g  I  e& P: C+ ^;;a list of lists,
trade-record-one组成5 f% W# R+ [$ C  X8 f
trade-record-one
; \1 w) I8 ]& M% R$ n# i3 [, q3 B;;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 o8 {' Y& ^, Q: p, G
5 b0 |, I/ i+ `5 i. p# _1 K
;;[
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]]
# f- M! E2 e( z' Jtrade-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]
( d/ `# r3 `8 {% O. m. d; H" v6 mcredibility-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# C. H, B7 B) R3 o% R- P
neighbor-total5 p6 ]- i; w% L" G  K
;;
记录该turtle的邻居节点的数目
' q0 D# h# Q7 D" R- i1 J8 Jtrade-time" b3 Z% O* Y1 E# _5 g. p8 B
;;
当前发生交易的turtle的交易时间. c. ]; s; I$ `! r: v" z( }$ Z+ O
appraise-give- J7 _. V$ r4 L$ Y/ |- n; m
;;
当前发生交易时给出的评价
! j8 h9 `4 ^. }" F0 `. Sappraise-receive" E! ?! o2 H6 f" _' n
;;
当前发生交易时收到的评价% T4 x# n( v, q; k3 X: M5 U  J8 c) O  ?
appraise-time' b& I8 {8 O! {" g7 u' n
;;
当前发生交易时的评价时间
* a' `) b9 q& W; `. J: J! [9 Hlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
+ }  X* n# n4 M7 \: Gtrade-times-total
4 M4 @* K6 X/ S0 m;;
与当前turtle的交易总次数4 B$ ~) i8 E7 e* T. t3 [' i
trade-money-total
4 L8 c" M8 ]; f9 Q* T* J& k;;
与当前turtle的交易总金额# t4 X' k  Q3 S+ ^# h7 m% y# A
local-reputation
3 v5 C2 L+ x9 j" r& \global-reputation+ j. ]/ X' B  |% S2 G
credibility) P# @4 P. K6 K! ^9 m. i$ _
;;
评价可信度,每次交易后都需要更新, B% U4 o5 I; y! r- n
credibility-all
" M5 A% i1 K5 W. b+ T$ 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
1 W& X9 u9 ^0 T; c) t4 f9 ~5 n* z* K) A2 X; Z# [) u5 A
;;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
# m( r' O5 {5 Y1 Y# Scredibility-one1 {0 G' `3 r0 @9 m; ]
;;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. M0 n. y, W# `
global-proportion5 Y) f/ e3 O6 R5 @; P. g6 y( M1 G
customer
% x4 _. ?4 \) ?# ^" g# x, k1 Bcustomer-no2 v6 H4 w1 [* @% u3 o4 c/ y0 v+ u: e
trust-ok- l5 |: |4 I; h) h% ?
trade-record-one-len;;trade-record-one的长度
$ B7 A/ [5 v; T  P! A+ s]
2 h2 k# s$ g' e- j- T$ y& S- n) k2 t( W# e6 [: h8 r& f( A% n
;;setup procedure
# ?: _+ x% l6 O, ?
' T4 k8 q. _5 O; T; Y% \% G( L5 sto setup# b8 P+ ^3 {* \7 ^0 I
0 d7 ]& N1 t. D2 x
ca
: c+ l- f) S; s% G

  R2 t% N& b0 ~; }% O+ T2 ?initialize-settings
9 S4 [# d! g' \& D' g) @

7 A; w  H2 f5 H5 r5 r  Scrt people [setup-turtles]

9 M+ ^* e+ f& a& l2 i1 r+ ]7 j5 b! r- @
reset-timer
5 _- t. w0 v% w  s4 D4 ]9 `

. K  w/ o4 b4 T) [" ?' ~. Z$ @: Hpoll-class

1 c2 D2 t9 P& l( U; D8 W/ J8 X) T( J9 }* ^$ ?
setup-plots
% Y8 Z# N9 n) p4 m

9 R, H% [7 K+ Z4 Z! e* w' udo-plots
. D! ]* A3 n" e. m! d
end
4 m# c' S, P, P1 n+ d# L
; q, s  r. v+ d6 w7 I: y5 o1 Pto initialize-settings
. x6 x7 s9 L7 O5 s8 T3 D# s9 P
2 u0 f* L# o/ R+ F9 |set global-reputation-list []
5 i, |# x6 {$ M: t) h) L

  e+ F; X, O! r4 ]5 w( Lset credibility-list n-values people [0.5]

% m. i) C8 {) I
" T# n  h: C  }. U! F, ]+ {set honest-service 0
+ C1 H- L% C' Q
: V( R. k- H; j# X) I$ R5 z' o% r  l7 z0 t
set unhonest-service 0

2 T1 c& j( N. W0 ?
$ s; N3 y1 h& V7 A, iset oscillation 0

6 n" j+ n2 Q2 \& _
; j4 |" m, H6 \) \set rand-dynamic 0

1 m1 ^* t. Z. p8 [4 iend
( a7 Z9 h5 L% v! J, V, V! g; ~0 h( `! R( g3 |' ]& z7 ^2 m! O# a
to setup-turtles
( m# I2 e* g. r8 _set shape "person"' U$ C; K: ?( b- \- c( F; k( d1 Q
setxy random-xcor random-ycor
9 a; |) O( g* z7 s/ C: G6 tset trade-record-one []5 B  v/ U- ?/ }9 l
4 s' \( e( S. P9 P: L0 i
set trade-record-all n-values people [(list (? + 1) 0 0)]
2 n# ?! V. [+ K# |) k! G; H

( _# B: a( Y2 w! \: wset trade-record-current []
9 H) p9 F3 V- x7 qset credibility-receive []% v- T( Z, H8 r( }
set local-reputation 0.59 t$ U+ f6 L9 c% E' o0 h
set neighbor-total 0* K  A+ h% O! T& @1 E4 ~
set trade-times-total 0" a1 k9 K. ~7 @9 n
set trade-money-total 08 |: t: R: V: W3 Q
set customer nobody
  Q, v3 C( w# y7 `# l$ wset credibility-all n-values people [creat-credibility]
$ f# I5 q+ }  ~. n/ W# D, X. iset credibility n-values people [-1]
0 c& Q9 f# V! J) B8 L% Eget-color2 _! L" a+ e+ |6 A
8 h) @* z. r3 v1 v( v2 ^6 w
end& X( _/ C' ^, M4 N" f) t9 B
# M( P! E! x4 u
to-report creat-credibility
  ^0 a7 W5 C3 _0 x" H. d8 M1 o. Z. \report n-values people [0.5]/ ?3 e% e& e6 @- |; T& m
end) }9 O6 ?5 b4 F0 p: e% t$ @

% {2 Y6 b$ d" m1 G" R5 t! u/ Y* {8 _to setup-plots$ {2 B, E. W* A" d& }) \

% N7 ~9 U! o9 @! L6 q: qset xmax 30
+ r% C' d/ ]4 \( V
8 M; I7 _* b- l3 y
set ymax 1.0

: p* U/ Y8 |* t  N7 u6 U2 B0 N  ~# a  Y" [. f+ A+ r3 T
clear-all-plots
  B; Z2 \. r- N3 P
* g& g+ P4 H3 ^8 r! g5 f
setup-plot1

9 E( Y4 R+ V% t/ T0 U) K. \: H4 y2 F# A% j1 e/ `# C' t# N7 }
setup-plot2
& h; L' g, N" R* ^! e; F" [+ g

- C: q# g* J: R+ V( z4 |- I1 Dsetup-plot3
$ P1 P+ h0 f7 L
end( z: d0 l2 Z* ?0 X2 H( ~. P
% K. O2 _& {) A; d( o6 [
;;run time procedures: j- K0 }& C2 a! }5 ~

9 u0 ]% R3 L4 Q8 W/ C& K! \3 xto go
. o) Q* K# @1 G
: Y0 g3 I% I" p9 G$ Yask turtles [do-business]
2 C0 t1 C1 A/ R! \6 k2 W. w
end
2 H1 y; D- `1 \/ }9 H7 {0 w+ S# r. I  L0 v$ t+ h2 @+ \
to do-business
/ D. N- p' e1 Q& ?
. C; l- ]% e: C

. H) K$ u) _2 D. n5 {9 @- x5 Z& g% rrt random 360
6 X% G/ p  M: N. }' V, k9 H
: W; _  E8 K) F' n8 B: T. t
fd 1
  Q8 D! ~7 d$ u

0 |# ~( y  d3 R0 d* z& yifelse(other turtles-here != nobody)[
7 [; U" {. H1 p; u1 d5 i4 d5 {5 ]
& z- r! B* m0 \+ J: U
set customer one-of other turtles-here

* a" N# ]/ H& A9 r; J$ g9 i5 ~# S2 f% o5 J3 o
;; set [customer] of customer myself
/ t$ G: I1 ?7 \9 [" N1 v2 }% L
( X' t7 U# j9 N% F, f; [" u
set [trade-record-one] of self item (([who] of customer) - 1)# T& I6 B- J8 ?7 b
[trade-record-all]of self
* T* N9 u$ {" N2 P* T% W, `1 g;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
8 c  ]! ~/ E& T$ p* M

6 J2 m6 ^7 l% [% \' w0 I& c( Lset [trade-record-one] of customer item (([who] of self) - 1)% D: O  r/ {. R$ Y6 l7 N
[trade-record-all]of customer
8 e- B; {6 j) V+ x7 Q, c

5 k# y. Y) \0 c  K. s: Eset [trade-record-one-len] of self length [trade-record-one] of self

/ Q; ?' z0 n( C# n# z, I* i: i: ], q' ]' d1 J' _5 M' A( A: X' V  H
set trade-record-current( list (timer) (random money-upper-limit))

% k/ G  @8 s5 T* t
2 J/ Q/ G# q2 I8 W9 t& v' |ask self [do-trust]
* F# A( n0 v$ K( D6 ?7 X" S;;
先求ij的信任度
. G) i3 H% F  K; D; Y8 ?" l  g# [6 T, V& J
if ([trust-ok] of self)
$ Y( g: i, g5 w( M5 t+ E;;
根据ij的信任度来决定是否与j进行交易[
) Q8 o; \/ i& X0 V8 j1 nask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself0 a- R7 n- P! ~3 d

( a& o! M" E  X# U+ j+ a" M[
- ?; w8 \$ x- v5 c5 h* L

* _3 M# D" y& pdo-trade
* \5 F& o. f5 K7 [
! F, Y0 J* a& m  Z) C
update-credibility-ijl

: z) Y: [4 D- H  E
2 k& P/ Z- |% E( w# |; lupdate-credibility-list+ w7 ~6 k- _% ]& t" p
! h, N# X$ _3 V. ^; \3 N' Y9 b: w& Z" E

( j% ]2 Z# Y* c! z# q2 eupdate-global-reputation-list

. k8 T- X" h, e9 O5 |8 h4 ^! h8 `( C5 Z: y
poll-class
8 {& A' h' r8 r& ?
+ g" N! @7 o4 i$ X+ n  ^; ?+ l
get-color

$ }: q  }% ?; n+ @6 {+ b1 L- v/ V  _7 g5 E
]], _) b3 J0 Q8 H* o6 f: _  P, D

& K, S0 p) c: u" B" B: W" [. f;;
如果所得的信任度满足条件,则进行交易
( S. Q9 e% j: J- I' ^6 l4 L8 [1 z7 [# b, @, K8 P, E
[
8 {# ?/ [" }& u8 b" }' i

) L  u' `8 I, i8 U/ k* D1 `# Srt random 360

+ f4 c5 @$ w$ n3 O& A5 e" `4 R5 a. x' J5 w" k- Q% l( D
fd 1
% b" }! F7 z9 N5 J% {8 X8 |, ?

- M! W+ f4 b% V7 O) ~# G( X]
  u+ Q( Z' h4 I4 g
# ]* s9 c4 }) d) p$ s5 x0 g/ A4 W9 K0 Q
end

( P4 J+ v/ m5 c* K* v* J
( U% T* }3 l8 _) `4 ato do-trust 3 x) x. U: n0 J0 }- M. C
set trust-ok False
6 ~5 D* {& A2 @; K- u8 C; G; ?9 j7 G/ K0 [% u5 V* G
# m3 Q1 J4 _2 x
let max-trade-times 0
# _) J$ _1 H0 `! J# v3 ]foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
8 d% W& h  H+ W6 Ulet max-trade-money 0, k$ o/ F, w# H  r4 M) z$ z
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
0 L  O. g& o0 e' Mlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
8 f% l; M) D( a! ?$ j
- Z0 X. x. A. ^+ \- a/ c

$ d  y" W4 G, i" P, }  M) ^get-global-proportion2 W2 W  z! }6 V0 b! u, I" o6 |
let trust-value3 G5 G* @7 I+ F5 c2 C- s: q( F% L
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)

* r, X$ M# k+ d1 M* f8 w. Vif(trust-value > trade-trust-value)6 l! Q0 ]! ^3 P4 R0 I
[set trust-ok true]
' O% ]7 ~* V, h0 Z7 O$ _end
- M0 e9 O, D, Z# X' V! ]$ q" y. n  n
to get-global-proportion
3 |* U) H4 ?3 A5 u7 ?( P9 lifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)7 W' A  y% ~  q# P% w
[set global-proportion 0]
3 z  m9 Z- c" n8 l+ J( y* y, C4 R[let i 06 N4 \$ m1 X  E7 p/ ]) e2 t
let sum-money 0
0 M8 U3 h3 _* Q. ^  jwhile[ i < people]
& d) V8 }. g. L5 |) ~0 Y! f/ x[
& B( k- u: v# T; u$ f" Hif( length (item i
  o) C% W- {9 {2 b$ n[trade-record-all] of customer) > 3 )
3 }% g% _' A0 z4 E) @
[
3 X3 U+ W) M, x: X- H, o+ r. o1 rset sum-money (sum-money + item 2(item i [trade-record-all] of myself))# L9 ]! q0 w! j: d
]2 U: v: }$ C! w& t) {
]
! f* |- q' i% D! _9 G( `let j 0  d) A7 |, r5 `% }6 _# z
let note 0
* `+ C! H7 X" j/ `while[ j < people]
5 }* k3 {& U0 @' E/ v/ f, I, y[
6 e* d$ M7 I/ Cif( length (item i
# X- |* q# C; _7 a- Q[trade-record-all] of customer) > 3 )

/ C: \2 ]( ?# O  P( ?[% `% @+ G; j9 W) W0 A1 E
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1), y# E! ]* X% Q+ X- G: |
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# [# A5 R  j8 N3 f& V[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]% B& D9 C2 v) \' r
]- e" G) m% `8 x  z7 n$ g+ L$ f
]
- j8 G3 W& F2 j2 x% ]% aset global-proportion note
# i) k/ S8 U* e* c& l/ b# `, |( p]
. H" F1 h9 N# T6 L* v) `) Xend. @( u9 T& V% ]+ W3 U& H8 D: d' C
7 `1 H- i! d6 s# W; _9 z3 E
to do-trade
+ m0 z/ y- d; a6 L;;
这个过程实际上是给双方作出评价的过程
  |, ~9 j, t0 d. B* tset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价2 c+ e% X8 O. G; |* y
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
2 Q- k' c/ K& s, O; u) K% u+ a9 mset trade-record-current lput(timer) trade-record-current
1 ]  a! O0 W. W+ I. w;;
评价时间
3 ^+ [. `3 |. k' ~ask myself [
- Z% b; E7 [" ^1 N9 E* c8 lupdate-local-reputation: Z; b) s8 U; Q; z1 K# u- V( {
set trade-record-current lput([local-reputation] of myself) trade-record-current4 G# n& u* a  p/ l' x3 x
]5 ~. A% D, h. k$ ~
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
2 R; y% f' b& q5 B' a4 j;;
将此次交易的记录加入到trade-record-one
" d. n* ^6 |4 S9 P7 Iset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)4 n2 d4 b2 a' I) }1 p9 |% J
let note (item 2 trade-record-current )
! {' O7 v0 v" Z: `5 Y& @set trade-record-current" ~! n8 ^4 i: o- C
(replace-item 2 trade-record-current (item 3 trade-record-current))
! T4 D" h8 z0 ^7 O  d
set trade-record-current$ Q; V% U0 v7 B9 X
(replace-item 3 trade-record-current note)9 P$ h+ d1 i, ?0 l6 d3 u

& I; g8 K) {0 x. t7 R4 X( p2 _  r
, X# A0 f) y. @4 [" U6 L8 B4 R7 X
ask customer [8 ~( ?6 G4 F5 {: L6 E  ]( Z
update-local-reputation5 D6 d5 z  b" Z6 z8 w2 w/ T. N* J
set trade-record-current. d' }0 U& _4 Z$ Q
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
/ a$ L% ?: @% p9 @& J
]5 L+ y0 a- @- K

, a6 A! e5 P* P" f8 [: j' i- ^
7 {( p2 p8 s+ [) [) |# }
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
% l9 S- D6 K2 L  ^
% q- W. v  X. P2 ~6 S, C% @
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))% [  G  B, |6 o& L
;;
将此次交易的记录加入到customertrade-record-all
6 b& p8 C0 {1 Gend8 y$ I! J# Y# t& _, [6 h

- n1 O% C& X4 s7 y& nto update-local-reputation
" u( ?* z! Z: Bset [trade-record-one-len] of myself length [trade-record-one] of myself/ x( Q) H- R+ z# Y$ W! j1 ?8 f

  [; v" F" S2 U& v% L2 H
/ `/ o7 g! s) A/ ?;;if [trade-record-one-len] of myself > 3

4 b( A) s9 L9 W( b* C1 c8 dupdate-neighbor-total
- ^- d$ e& @- m;;
更新邻居节点的数目,在此进行
. M! H0 o. B; u% Slet i 3
2 `6 K6 m! ]$ T: l; [: xlet sum-time 01 t3 n# W) _- u7 M: Z
while[i < [trade-record-one-len] of myself]
; T2 Y# f# s6 ?$ i! S5 {5 j[$ P7 l4 G( S! M& b  r6 U
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )5 @! x/ X' a/ k7 _! W* z
set i0 x0 u- Y: B, x  T
( i + 1)
- E- y  ^. W+ e0 M2 S
]. U/ k# d7 ^8 a5 Y3 T7 [* x
let j 3. t/ ^$ @. I( a/ p! M, b( d
let sum-money 0) p4 T! V. O" _3 @/ r
while[j < [trade-record-one-len] of myself]
0 e3 J6 l4 j  T[5 p$ N0 S  G( t$ I/ ^+ y4 y1 y
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)1 V: C6 P+ O3 M. t5 j$ y
set j/ y  K4 ~* r6 U3 t0 }1 _
( j + 1)

; l# v# h$ U9 {- @+ P]  z) n: b8 L+ W( _' O( x1 B2 E& p
let k 3
1 k9 q. h0 [0 c0 Vlet power 0
, ?* t# L. `8 T# V% M. d8 Vlet local 0
5 M; ~. Q/ m. G4 @0 ~while [k <[trade-record-one-len] of myself]
  j$ C: w, _$ `: p" ~1 R[/ U3 p  S- {/ \' s7 o
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)
8 o' q0 I& k0 {3 G4 Wset k (k + 1)4 B% h) L5 H5 \, v7 b( n
]
! T, z& g* ~' `; _. Z, d4 O- Y* Vset [local-reputation] of myself (local)- _+ ^5 s6 G3 W; w* b' E6 k
end* w5 D7 k8 c" T, g  s

3 {" j+ j: ^5 Y. zto update-neighbor-total
( D# a9 c7 w; T% m8 I5 j, J( ^: ^
9 ], N: M' F3 D  Oif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]- {3 m$ w  T7 i6 p4 L( ]- q$ \
$ _- O7 n. |  f/ e/ d0 G

! j3 w1 O0 B* x  h( ~+ Qend
$ Y! S7 @, R2 ?7 d: z& P5 o% S" ]. D8 S8 `! g5 r# I" I  }# U* O
to update-credibility-ijl : B7 }" F- y4 p7 {: `
! R' d8 C9 h- G6 x' y
;;
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。
+ E% C" N+ f1 M$ J# m. h0 tlet l 00 a# d5 i+ ~5 j$ W( `( X7 d& F" Y
while[ l < people ]5 ]6 u: u, z! ?% E
;;
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1 }! p& J2 b5 c) v* B3 y
[! t* i; M9 Y8 \7 N+ F7 c! n' o
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)7 w8 d* f2 ?9 \! F: E9 ~
if (trade-record-one-j-l-len > 3)& B6 L, V. t' E: r1 {* U
[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
: J4 ?% V1 g/ N  P; ~let i 3; D1 k5 L7 m4 o( G
let sum-time 0  W8 [  k8 X7 X! r0 p% Z# @; M
while[i < trade-record-one-len]
  T/ ~- h3 C" O- j& B$ f% s[, n2 e# U! h* d% b
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )2 F; i( r) ^8 p( ~- Y5 |
set i
3 P/ x( H; G, d0 A& b  }) @9 s( i + 1)
2 ]( I- d9 a. s# [' K6 z
]
' Q9 I4 b, z, h& T: Elet credibility-i-j-l 0
3 l! y! Z6 c$ g" Z* ~3 i;;i
评价(jjl的评价)
3 c% ~. j  _" E0 V- x/ I6 Jlet j 3
% Y1 S0 |: m3 o: N4 @/ Hlet k 4
2 N6 B$ k8 M2 w+ t+ P9 j) n1 M4 ewhile[j < trade-record-one-len]# J+ G# l. M5 P3 B: @) N) q
[0 k+ ~" M$ P0 |& ?* j2 R( _
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5 T- l7 o7 b' e; |1 m
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 H* R& @9 J9 c7 W' J$ O7 J
set j
) }# O, o- ]" X5 S% a  C+ K( j + 1)
# l, @: E' F9 ?/ d, J9 G
]
9 _  O  N- z  O( p" o; V, O9 R/ w' Vset [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 ))
4 a: ~9 Y. k1 \* C! B& g/ E0 j  M4 N3 f# |3 ]' J
$ R; @9 P2 ~2 `
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
# N+ k1 u- h/ W* f0 w  `1 K;;
及时更新il的评价质量的评价# L) g! @, \  D2 z
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
/ o6 Q5 @) C% J$ F! B6 sset l (l + 1)
! E- R9 q# K8 R# g1 x' C0 g]. n7 r  P1 {& G
end/ I% q! S/ q6 K. ?
* z( B% l! V/ s8 q* ?, G% S6 N, N
to update-credibility-list; C0 R  i: |* C, s9 ^- L
let i 07 c( Z0 S' M$ q) `, r' k/ j
while[i < people]2 ?9 v) k/ A- `( m0 u$ g5 u6 g  I( J
[
3 ?2 `. m. [0 j1 K% ?( l0 E* ulet j 07 ?8 v& q, U$ T& ?$ O7 f. }7 @
let note 04 _3 H. x$ a; \* {& x
let k 0+ f, a$ a* x2 _# w
;;
计作出过评价的邻居节点的数目
2 n, D# E" G6 G# Y4 W' K8 }: Kwhile[j < people]$ z' z/ S* A$ J  M
[' d5 }& D) ~+ G7 q
if (item j( [credibility] of turtle (i + 1)) != -1)
0 c" H+ s8 p6 j: f1 M' J;;
判断是否给本turtle的评价质量做出过评价的节点
4 \$ H' s& e: {+ O' g[set note (note + item j ([credibility]of turtle (i + 1)))" g& f# r5 J& y& e9 R
;;*(exp (-(people - 2)))/(people - 2))]
5 J- K. W1 U' q. W; F5 @
set k (k + 1)
3 ?. j5 \- n2 {, `]4 {& N6 d5 n& F% S2 v) ]( f) Y
set j (j + 1)& N3 f, ]! k1 U+ y  r
]
! p% v4 J+ R: @! Rset note (note *(exp (- (1 / k)))/ k)
1 x; e8 ~3 A- dset credibility-list (replace-item i credibility-list note)0 B& b% A$ a7 z2 ?# {3 ^* p
set i (i + 1)
' a2 I1 X, B6 \' @4 V1 Q]* o7 F% x" R& n- U7 ]; Y& H
end" |! e# s: X& S
7 A3 F, ^/ x% s# Y& D
to update-global-reputation-list" v- u4 I( C% C8 {$ Z! R3 z/ R
let j 06 ?! p; L9 v/ ?3 X6 I9 h
while[j < people]
7 z' ]. p' L( \7 J' m" u[
$ ]/ @, u0 d' y% \# `8 i9 H4 k4 ilet new 0
" w# b1 r$ N) U# V4 n+ p9 j;;
暂存新的一个全局声誉5 P$ I0 m" H4 \2 M( Y
let i 0
( }5 t0 R1 h5 Olet sum-money 0
7 X: k: ?+ R" \: x( R0 I, d; xlet credibility-money 0
# D; r6 o5 @9 S6 T6 mwhile [i < people]
% X% }5 E- Y' i) U5 j* {[
# F' S6 U) r# I6 t, t8 @  |! Eset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
% o' ?) ]$ D- o6 T; X. d- T7 Xset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
. V4 o- H2 @7 D: y  Y' L/ T9 Uset i (i + 1)+ t6 i) g' T$ J- P6 z/ K
]- Y9 E. g  ]% A/ P5 G4 D
let k 03 i+ x  `# N) m# b
let new1 0* {! M" K! j" c- j  o
while [k < people]
" p( @3 @4 {0 d5 H$ I# X- l( Q. i7 R[
  \3 `& C- _/ k8 W3 d) |3 n3 _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)7 U7 t) S: W" g* I) M0 Z4 y4 T
set k (k + 1)
. \: \' C' V; m( w* d( q% l* i" Z]6 f, |  g! Q8 G7 z) U. c5 s
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
1 P1 ?+ V0 l. Cset global-reputation-list (replace-item j global-reputation-list new)
% f* N; I2 K  u, S+ v/ B/ Pset j (j + 1)
! L! I+ @/ J0 X0 }0 h], \5 }7 j0 P' J* z* f# F! `
end
: ?1 o7 G- A, x' Q* l2 W. d
# i! u  ?: e1 S% D. _( D
& \0 V  u& u2 [- s* Q7 o: z
+ H& M0 R) G1 c! C( E0 qto get-color  X5 V2 f) ]6 J" f5 T
# f2 ^, t) V6 q
set color blue

- y6 e8 b; y% o4 Q9 w6 pend# S5 c3 f$ W* i% J9 m

: ?5 ?8 B$ z) g$ O- yto poll-class! u" r5 j6 z) X9 A
end" H  ~) O2 [" z% D
+ p# p/ {; U6 f, K
to setup-plot1# ]% [. @# c1 }8 C
2 d8 F+ d# G. y# c: l6 w9 j
set-current-plot "Trends-of-Local-reputation"
  _9 L$ m  W# ^# p7 b% Z7 ^
# A; V' p2 Q# i
set-plot-x-range 0 xmax

& l% d, W) z0 C( r( C8 k
: L' ~7 n: H  ~- ]set-plot-y-range 0.0 ymax

# e/ ~3 v' A7 Q: n, n9 lend
! F) `% E0 d$ m5 x3 R3 O1 Y1 V3 f& P- H/ e& `; _
to setup-plot2* A/ C7 w1 m$ d: z2 b
) R* ^/ `. P# r# o- n: v% O, B
set-current-plot "Trends-of-global-reputation"
7 u; ], g6 v* m5 f. {0 H  q0 a: Z- _* w
& }; Z% `" ?* z; J/ V3 A
set-plot-x-range 0 xmax

7 l. S2 _/ ]+ S( L8 U8 R7 A
3 b- r9 r. z  Bset-plot-y-range 0.0 ymax
5 j- [- M! N* ^% ]8 V: {3 a1 Q
end$ O- ?# C  t) n4 a" E7 o  V" d
8 W3 m* x$ S/ O5 c5 {
to setup-plot3, N& t  z9 s+ e+ [

2 F" M; y" \' x" t6 Lset-current-plot "Trends-of-credibility"
: Y, j/ k% B* f) J8 l7 k+ q

9 ]. `, n& Y* H: w/ N$ kset-plot-x-range 0 xmax

0 T% J9 {: B: x+ O# a( D
2 n/ b, m. |$ v' q  Vset-plot-y-range 0.0 ymax
! _- F7 G8 m  ?! y( I( [; f* U1 O
end6 E: `. Z5 y3 k- k& U

6 R" Z$ L. |1 }- g4 M' pto do-plots
) M2 H" Q  o( H% ?! Hset-current-plot "Trends-of-Local-reputation"/ {8 f) s. r8 C* [2 T, L, t
set-current-plot-pen "Honest service"
0 p6 w1 m% ^2 `% o9 E% Z& Oend
: ]4 I7 T0 n7 v% u+ E. P% ?3 @3 s4 a7 `$ t
[ 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.9 m/ f* V) K( a  f8 {) g
9 r' r6 N5 ~, L1 x1 c
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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