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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:+ ]0 D* X( _7 o" G7 J8 \8 t
to do-business 4 k1 |2 |- b& t! h
rt random 360
! X  B- b5 s+ s; N/ f; f fd 1
# X( Z" ?7 i: n9 ^ ifelse(other turtles-here != nobody)[
  q0 q$ E+ G% P6 O: I# t/ Y% b' A$ ~* X   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.
, }! m: M9 c- c- L( g+ s- E* _   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
6 \) F+ ?' t. k- Q   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
# l' O% o9 p& r0 D( B$ U/ J   set [trade-record-one-len] of self length [trade-record-one] of self
2 s# P; A, A- c5 P7 L4 n/ a   set trade-record-current( list (timer) (random money-upper-limit))4 t! n9 a1 t9 l; B" m, T# O# p
! Z1 E7 _3 W) h, H/ f0 x
问题的提示如下:0 v9 l/ y$ b" |2 e" x+ N
) R: {* b. ?5 l  |6 w$ J$ n
error while turtle 50 running OF in procedure DO-BUSINESS, t9 G3 G% I, J1 g, {" a
  called by procedure GO
8 D) u& e1 U1 vOF expected input to be a turtle agentset or turtle but got NOBODY instead.
$ \3 C0 P% a0 ~( A1 c
(halted running of go)
+ E( M& ?6 B- O2 y+ d1 t  C/ u4 f" c% s
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~~# i) D+ z8 Y% K' I
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
0 Z4 E1 N# N; a8 P! i! x  u, H6 qglobals[
9 K) m" W* m+ @0 hxmax
: \) y; A6 w$ @" n, f% l/ eymax5 i- T0 Y1 Y# j7 N. N' T7 _$ `3 r0 q: P5 d
global-reputation-list
0 l4 t$ }- k% N" ^8 H
9 n- l9 {9 Q  m" X; k) R7 g2 x2 |;;
每一个turtle的全局声誉都存在此LIST- I( u. B8 j- s, I! ]$ Y' X
credibility-list
7 Q5 ], m) C, r! w9 e5 T+ g. e3 _;;
每一个turtle的评价可信度
' X& k4 m# k8 ~# y! dhonest-service
% o7 f9 K7 L. d$ K7 D; }unhonest-service$ S5 B( g" ~5 Y) l- H
oscillation) S% I  C+ c+ K( \3 W, D
rand-dynamic, B. `( u( q* c+ A! {: e8 E) a0 g0 c
]
% b  \$ e9 @" s) i3 X) h7 V, K6 _8 \" X" K! V) a  @; v4 c, ?
turtles-own[
/ f. L7 O# v( z8 m" u; F1 u. s6 ^. [trade-record-all3 G4 H" E" H7 {
;;a list of lists,
trade-record-one组成9 E& ^, K7 V( P: z- g/ O# z! e
trade-record-one
4 t) W" o6 }7 w0 n. i+ Y: r* ~;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录6 g5 X- Z# h! Z. i! P0 @+ A

4 T- Z) Z- ]) a;;[
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]]
- {5 ?& {% l; v& m2 y- Otrade-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]0 a/ B, a. i6 Z; t
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; ^, C1 f, X! H' I$ c3 [, d6 e2 d% w
neighbor-total
4 n; |$ {! ]0 c+ o;;
记录该turtle的邻居节点的数目
# z! B0 @! r9 S" I2 l- D: etrade-time
/ [) }3 J3 o6 ~, I* p;;
当前发生交易的turtle的交易时间
: T4 T9 I$ g; u% l0 H/ g1 \appraise-give$ l" V8 L& g2 x; F
;;
当前发生交易时给出的评价, F# d5 U3 n! Z) K& ?/ P( N6 N; K3 J
appraise-receive2 b) d9 x4 v; m8 A8 y1 _( o* j
;;
当前发生交易时收到的评价7 B8 D. I5 O. V* Z- g2 ]: z+ m
appraise-time9 V- _8 d* c% a8 [" n( ^0 \* |
;;
当前发生交易时的评价时间2 a$ B+ I9 V0 t3 q7 ^% e2 M
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
4 v9 D6 O5 M, b$ [8 w% qtrade-times-total' d4 V  Y# A, t' `( j5 i( B. l
;;
与当前turtle的交易总次数* I& ]) Y" S/ H) d3 a
trade-money-total
/ L4 M4 n! b! h% {% C% |8 w) w8 c;;
与当前turtle的交易总金额: h( y) r! R2 h
local-reputation
8 C; z# U' t; f2 y4 `* Nglobal-reputation
. y4 V5 |: e9 g5 H3 g+ `, Q' @credibility
9 h- N! d6 |$ i; j( A;;
评价可信度,每次交易后都需要更新
# K! f; Z8 W# r8 l7 A$ b) {! Vcredibility-all
7 d% r0 n, C& A3 t; a;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据
( J: u9 D) q0 C# G6 i1 p
1 H! Q; `0 M. w- |# u: u0 ~2 ~8 t& t& m;;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0.53 O) S; R) a: |; t$ ]6 J
credibility-one
; }4 u5 R, n, I( g7 \- Y# n" e;;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people3 d1 Z, ?. D+ |; U' d; N& O  f
global-proportion
9 e: a# @! S8 V/ l# |: lcustomer) I& r# T2 U$ t$ S
customer-no" Q! N0 Y& O. ^9 ?) P
trust-ok
3 v4 t, Q9 R& `& p7 w& X2 ptrade-record-one-len;;trade-record-one的长度
0 h: s; I  }9 }. E0 T& }]4 v/ _8 G2 b! i
% L0 v5 |/ q4 |* H3 v) E" R8 V: I
;;setup procedure* t& K9 h* o( R, f+ m; f

; t8 F( o/ x  a; Nto setup
/ F2 P/ k* k* j) a5 w
, B" S9 G, m4 L9 oca
& L$ X+ o1 W2 }5 J/ j& O

7 i; E' |9 m  L5 e) E4 d. Tinitialize-settings

$ G. f: w1 t$ w, E. f5 r, ?* t1 b0 i; u* _7 C- b6 m, @% x! a4 m
crt people [setup-turtles]

* X. ?2 D$ K7 J5 x
, P! z9 j, p( e* g. wreset-timer

) A( Q* X9 F1 q/ K6 O8 S( {' t8 }, G9 C: n' Q7 J% x
poll-class
$ i8 b3 \! E1 G7 r* f; ^5 K4 V7 a

, F3 L0 v6 E4 G2 P" p8 q! Osetup-plots

1 ^9 J! u! D; G: B9 t7 Y4 S- ?$ p$ f2 `1 @* X
do-plots

0 a7 t9 }5 o- @. S3 vend
3 p3 s3 f) [+ Y% |" G, n& r- P2 n) G* R" V& S3 T) P% L4 H
to initialize-settings: g# b0 ^9 t2 l. }$ f) ~4 S* P

& l7 y' V7 o( H; Uset global-reputation-list []
1 a% E8 h$ \  k$ b7 h9 m
1 y8 n1 ^3 D  @! k- P  i! g0 Q
set credibility-list n-values people [0.5]

. a* U0 {1 o5 O# ]6 l/ I' G; f/ u; S7 k# [9 m# g
set honest-service 0

; L. X2 `! z5 X7 E, @# K4 N
* c9 Y$ [1 @( G3 w9 {* J$ ]set unhonest-service 0

8 J, z/ I* y: o; v- b
& [5 Y/ e/ b0 Y9 yset oscillation 0
: @! b8 a% x5 o9 x2 o( N
, [, R) g8 q6 ^% z
set rand-dynamic 0
1 d; \: s4 o- ^$ s" q* i
end2 D& c" g( c/ q9 [( K/ k3 H

& i- F2 ~) ?0 R' F" z8 e5 `+ vto setup-turtles * D; e4 I; B: Z
set shape "person"
- |5 r/ `  N! q0 @! ]! i7 y) h4 Bsetxy random-xcor random-ycor
5 p3 q- v& o6 N9 g$ U6 [% Tset trade-record-one []" Q2 A3 a' @( p# J& \) p

, _; G0 ]& W4 B" O$ K9 P7 _set trade-record-all n-values people [(list (? + 1) 0 0)] ; Y5 r' Z- H( ]0 U! [

1 j; u- B, ]. t# F# |0 \' Vset trade-record-current []" ~/ U' \) {  k1 i& w; i: U
set credibility-receive []- C; w. b# W; v! a4 F; m
set local-reputation 0.5
7 R$ Z2 w- s5 yset neighbor-total 03 t/ H( h  v/ \$ [+ V- r2 N
set trade-times-total 0
) M- v& s4 M. e5 p0 T+ Oset trade-money-total 0
+ v- _4 ~) q+ d: Dset customer nobody
) ?, p" Y! y) E' ?, Cset credibility-all n-values people [creat-credibility]
$ V1 p7 k& W- U" W; N) x, zset credibility n-values people [-1]! y% \1 X; o; c8 V9 P  T
get-color
6 h% E/ `$ U& X9 Z. R# n+ w' r5 k

: M# U8 U2 I- a* M: Y9 \end
; T% }  C  M) n9 |, _) D6 P; M: s" f; i. S" _% V) y8 E
to-report creat-credibility3 ^6 n( E6 `, _# X7 F. G  E
report n-values people [0.5]" k( b9 e9 g$ _! i- }
end0 K- Y) z) _# c+ B& E. v1 G

: c8 Q5 g- c: d* y5 i+ Rto setup-plots
8 q. F& C4 ^; T; w6 |4 p
3 {  ^! }" W8 Aset xmax 30

+ p* Q: n, p4 r" l
/ f) n6 o1 `1 e' h. `' aset ymax 1.0

2 ~8 x0 R' T2 h9 a8 s3 u) n& ^+ Y$ e6 ~- N
clear-all-plots

+ x1 C" z, G# u' y8 Z
3 i: p: m4 e( W# G# Isetup-plot1

4 i  N) A0 ~+ j! C/ w
" D+ c; M) U2 d( V5 ]! o) A2 |; Fsetup-plot2

' F, [* I- X0 F$ @4 P4 q
9 i) F5 P5 u) X/ q% w  jsetup-plot3

* B( d* |7 u/ \# x  `) F* Eend
# a2 q! _/ E, @1 E- c9 V" }: @% q: h$ E" D( u  K$ P9 ?7 F/ ^
;;run time procedures! b$ Y" E3 L' s# F
$ ]5 B$ |" y$ R) m% z: j
to go5 H# P) \% @# `; U. `4 E7 z# h
" d* f: p% c) C) v% v
ask turtles [do-business]
; l9 Z, B% M$ K
end" I4 r2 d' W4 C

" F. S- R. r/ Vto do-business
5 g; d. x! B* m3 J( v7 k
7 N( r% ~* @( h3 l) M+ p& J
8 ?* s; Q+ ^) c1 M$ G
rt random 360

- `* L; X* W7 \  p" U' H7 J4 M  L5 t
; {: ^. z+ q( `fd 1

9 x0 |: A6 D- H4 |) F1 Z/ x5 J( B9 E4 S  S
ifelse(other turtles-here != nobody)[

7 N, |. J9 ^  P: r" z" Z6 N3 l0 C* l! S6 e. ]# C
set customer one-of other turtles-here

3 M4 t( W9 M9 N0 F  F+ d. d% _
;; set [customer] of customer myself

2 T9 i$ o$ w6 y# {
0 [& E; |2 b' B! s/ V/ Z; pset [trade-record-one] of self item (([who] of customer) - 1)" Q3 e3 O8 j% L
[trade-record-all]of self
7 f5 [( ~1 L5 K;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

  F, ~. i8 Y5 n' }7 l" j6 N" B9 d9 P2 l2 n; |
set [trade-record-one] of customer item (([who] of self) - 1)8 w! n/ g% x' x- l
[trade-record-all]of customer

) ]8 _( B3 {2 W9 X, _1 {- [
& @( u9 P, w* o+ Rset [trade-record-one-len] of self length [trade-record-one] of self

9 g4 V* V( [* I" W9 y
  V  T# }6 z+ m3 B5 }$ ~) k& P' d3 [* H+ ?set trade-record-current( list (timer) (random money-upper-limit))
9 o( P  H) ?& @& u
- t/ c* @2 n4 y1 N% A
ask self [do-trust]
2 |. Y1 M, b5 [;;
先求ij的信任度
2 @' ?" d3 o) D0 z. r! r, Q3 m$ y  W0 J# ~. n
if ([trust-ok] of self)
' y6 {- \0 @; m+ U; C8 u;;
根据ij的信任度来决定是否与j进行交易[
- I" f4 O' `" v0 dask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
% F, ^5 D% J* X5 q+ X! F1 v. W3 S0 Y4 k' @* D
[
5 o  K8 T" @( v8 h/ k/ x; t
8 ^$ w. U; n4 L+ [2 a) A
do-trade

6 ?! A0 Z1 A/ V. E# D& v8 Y
0 |2 `0 i8 j/ N# G# U' supdate-credibility-ijl
: P, O/ y2 r6 C5 Z" `
; j. g8 A% t9 Y" {4 }- b
update-credibility-list
/ S7 ^2 i, [* l0 _
. T8 U1 h8 Q1 f  [

! _1 W# D$ X! q( Jupdate-global-reputation-list

+ {$ P. F. }2 B2 p4 I  R
/ a$ ]* D( Z  O) Opoll-class
" F3 T6 M% ?- E

* a( ]- V7 G4 C, r; x" Fget-color

7 O1 B7 T- l& ?3 }1 ^2 O/ z. e, ~4 ^1 e+ Z
]]
8 ?/ Q2 z; a) j) W
& |$ Z& W6 u( q! A;;
如果所得的信任度满足条件,则进行交易
& w% w7 `+ n* F, u( P( O( U: j0 T2 J2 N' i+ ~/ S( H+ q! L
[
: r) \. X2 Y7 l/ O

) i$ x$ s/ g8 o& D+ p) |( vrt random 360

" J* A! S- F9 R5 D5 {
- }; p% _. i/ F) n+ |. d* hfd 1
" Q. {6 w* H1 b* K
, H( K/ }* L! P+ J5 P* D- {
]
: `0 a* R* l% m' d
- _/ U0 p( A7 k1 }& c
end
9 s: {2 l4 k. |3 w( r: v8 h5 C
2 D# f' g$ ]9 s0 I* [
to do-trust
6 Z2 m! i  x) G% a6 mset trust-ok False/ n8 Z& |: T2 m8 s% ?8 N/ H2 K* _' z

* m$ A  K6 c) m# M

$ |/ e& p# |. f  Qlet max-trade-times 0& L: \5 f; D6 N$ B7 z$ S
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
7 _7 S* y+ v  C. Dlet max-trade-money 07 c5 v: z  Q# r: ]0 R. k% ]9 E- X
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]: e6 K: {4 g* ~, c; Q  n1 g
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
% j/ w( O$ g6 M
& l9 S2 o5 v9 B
4 \$ H4 ]2 Y0 j! n
get-global-proportion
, a6 ?. Z* A( J' Klet trust-value
& f$ a, V7 \! \" ^6 dlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
: S% i: o0 C7 ~2 R
if(trust-value > trade-trust-value)) u$ c' a' W0 b, ], O9 A
[set trust-ok true]7 h+ t; f9 O0 I. x. Y, r1 {4 J
end
3 Z# Z7 f& X1 n$ _! {
5 b2 d( b  o, h# @to get-global-proportion
% Y' B! w) L" n5 M1 `9 R  Z3 lifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
% R' j* K% N" u' x7 ~* m[set global-proportion 0]" p  z8 _1 M( {: V5 Q
[let i 0
$ e* \0 C9 m3 w' q- H; A. hlet sum-money 03 E- F( h# f; F6 {5 E; C  j$ d3 u
while[ i < people]2 ]$ u5 a. p$ \: z
[9 E% ]2 \5 ?1 B
if( length (item i* P- _2 T* U/ K& P. h. j; M
[trade-record-all] of customer) > 3 )

& ~) U7 G3 g  ]' g( L% ]" k4 {[
5 {0 b, w* F% p! A" t3 ~set sum-money (sum-money + item 2(item i [trade-record-all] of myself))4 E& B* Y/ x+ h
]0 o$ U1 @) G( C6 s# B) W
]
7 d3 ~$ _; S, k: f; q" a! tlet j 0/ ?* E* U" o3 U& I! u
let note 05 F  Q2 J9 M4 {3 X/ ]
while[ j < people]
* Q. X( m4 w4 i[
& Z2 [9 y! R. C; U4 u$ I6 p& Gif( length (item i
: @1 H/ b# K) w/ j+ W[trade-record-all] of customer) > 3 )

7 y6 Q. g3 T7 ~- b[) k: u) y0 a* P
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
$ Y2 [( d, l8 `$ i9 f[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
6 G, t* w* h3 {7 f& z3 S$ l[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
1 \! l, M1 C1 w/ m' A4 t& l/ J3 t0 @]# D8 L5 \3 q7 M
]; g. i3 f5 K3 r  i; l- u$ K
set global-proportion note
' i7 ?5 t( t9 s0 }/ i, n: r1 n]
6 q, o. s% G" ]. F. A0 Rend9 U& a) K* E- U5 x1 X
5 B" o; J" J( X& V0 }% \( l! W- N
to do-trade
. _- C- }/ Y% W5 i* F;;
这个过程实际上是给双方作出评价的过程  s" v; H3 C1 p, p" }
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价+ v+ x- y" u  r3 Q7 P* i; c
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价) a+ V4 O7 \3 q5 z! ~
set trade-record-current lput(timer) trade-record-current9 y% ^" Q4 G4 E6 y
;;
评价时间
% A% W, x0 j  f' X; {ask myself [. U7 z0 m( G5 U  Z
update-local-reputation
# Z4 Q8 G! i6 e0 a, v1 E, t5 `set trade-record-current lput([local-reputation] of myself) trade-record-current
  U* M, y0 _' K( T( ^# d6 E! d]4 b# d. }6 E, b
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
% a/ c( f( W( B9 w; H5 C: R;;
将此次交易的记录加入到trade-record-one
! J6 B$ {9 z" d" V$ i4 |3 U" Sset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)7 d3 h5 n1 i- r& p# F+ P
let note (item 2 trade-record-current )2 v8 a: s- M8 n2 h1 X1 B/ I/ |
set trade-record-current% y  y6 O/ }' ~
(replace-item 2 trade-record-current (item 3 trade-record-current))

6 T9 C, X0 @( B4 j; n/ T3 I1 C) oset trade-record-current5 o5 D$ |, f' l; o4 W& X
(replace-item 3 trade-record-current note)
5 C: o, o! |. ?, \& m" X, j8 D5 b$ c" J7 T
9 D: d# |! c( o( X
ask customer [/ ~3 v* D: r( _7 X% D
update-local-reputation* b( F5 q. ?; ^" J+ C$ }% U9 ^
set trade-record-current
; X2 ^. K1 ]" U; I& R/ |(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
0 m9 `2 p" ^! v* Z
]
3 ?4 x# G- F3 B/ F; }6 d. g2 ~* U( X

9 l& {6 u" L5 D7 Pset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
: W& ~  }3 ]/ @1 X
/ a# g# h+ w) z1 Q4 ]
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
0 G* ?: p7 ]0 ~( b8 b6 @  l, E1 e;;
将此次交易的记录加入到customertrade-record-all6 {: t1 y* q  x& y
end
* \6 j. w5 N1 S4 ^9 W" A! n
/ e/ L- L: @: h+ }0 vto update-local-reputation
+ ]9 ?( R' X# Z" Qset [trade-record-one-len] of myself length [trade-record-one] of myself( E/ D# |" N4 V7 ~1 X$ l2 H* w3 ]
: g2 T9 s: N7 E5 |$ Z( {

# `  \' @8 u& ?( F6 M;;if [trade-record-one-len] of myself > 3
4 q1 u% `! w! H4 C6 |
update-neighbor-total+ E2 V" X0 ]" f
;;
更新邻居节点的数目,在此进行5 F8 P$ ]& Z2 J" m- L. q
let i 3$ j& S2 e) P  ?: A- L2 L
let sum-time 0
/ z0 M% [; Q$ p: ?- N) L$ ^# P! cwhile[i < [trade-record-one-len] of myself]
4 c- A: j0 o. W; t% f2 J/ Z[
6 c2 _( h  a7 W  Sset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
6 r1 t2 C4 v" a/ E4 ^set i8 ~$ \  s  x. ~3 j4 p
( i + 1)
! U. Y+ K  K. S( v+ }
]
% r0 W& l; n" `! L* o0 v/ Plet j 3
7 t5 R4 D7 p/ C- C* M* Alet sum-money 0
+ W+ H0 O# Z  ~: E2 w, R% G2 Nwhile[j < [trade-record-one-len] of myself]
- e# H9 F) o! r# {: c# M. A[
6 n: f& @8 l/ d  Uset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)" l% W' q, v& ~. u2 B3 V3 X# Q
set j
! ?7 t) a4 ^( R! R( j + 1)
! p0 g9 }6 z0 C0 [$ _
]9 m  Z& Y2 F; m( B' ]5 w5 L
let k 3
3 c' {  g; e% I& {( H8 v- ulet power 0
% V! P- ]0 X$ r4 C& I! x; tlet local 0- s: w2 n* ]" Y0 B0 h" {. R- }
while [k <[trade-record-one-len] of myself]
1 Y/ Z, m# s. S0 I[9 t8 O: L0 ~# }2 L! R- q% p
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)
" Q# {9 |7 m) G5 C  z+ M- q+ Wset k (k + 1)
( W: a* C* B% q/ \" B& V! }]& k  ?  X5 \1 y- N6 t, w
set [local-reputation] of myself (local)% E- W: b! m- l3 B5 Z; h
end
  O( ~& n. W+ r4 r7 V& p9 L: V' }* d4 T  R1 _+ i) L, ~% I
to update-neighbor-total
5 ?2 e5 l) s" ^$ h0 E+ l- X" q% {4 q- s) k1 S. {4 y
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]5 `% ?/ ~. r* C0 B; f' ^. |( D$ c
3 W" T1 T( F4 Y" [

! U; g" l0 V# _! Rend
* r1 t5 C5 a. `. h
, E) D3 D) e3 I( L0 ?, q! g4 J, A6 Sto update-credibility-ijl 7 P  \9 ?: E0 g2 y! D
: Z/ t" y8 ^2 ]- I" z# n& {5 R
;;
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。
$ P$ A; n7 K/ Mlet l 0
0 G+ a' i/ @9 q' ]( G2 _  Ywhile[ l < people ]
+ q6 o9 d, a. 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
" L, |% p5 u: T  l$ w$ Q6 B; W* F[- ?7 ^; d# r& `/ |) p0 h& ?
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)$ {, J# ~& R! X! R3 W  H
if (trade-record-one-j-l-len > 3)
  Y& I* D7 b% {. 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
9 D/ J6 c- }0 h# B1 a; Ulet i 33 ~% s! u$ C2 n9 h
let sum-time 06 e3 {7 q8 l" l) _
while[i < trade-record-one-len]
, Z8 V  x) ^: P( `0 s[
3 ?# M$ I" h, Wset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
+ f6 s/ \2 l; O1 c5 ^0 D$ b2 {set i
9 I! ~2 U; K4 K6 p  C( i + 1)
  g" O! A4 A% s$ J2 e! g  r
]; U* H* \* K# r) P! U
let credibility-i-j-l 0
' w5 G3 d+ \, q( m;;i
评价(jjl的评价)
& \4 T2 A6 C$ K) e9 Alet j 3: v  K: a0 H7 x
let k 4- |7 p5 G! ^4 Q, }$ u% j
while[j < trade-record-one-len]
% O5 z' X4 _  U# Z2 o: ~. e, v[
6 X6 Y1 ]& B; |( I% c6 h  jwhile [((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8 A) b! |/ P" d) W: c/ \% z
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)
, G. n# d0 e" jset j8 t9 C* [* B  q* s5 {/ }* |2 p' ~2 h
( j + 1)
, b3 `" C( F# l2 F. U
]' @& L3 k0 u) e
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 ))
, K% a% \9 k9 a1 M( i; A
6 `! t6 f- C( _" t

! ^6 H" i. e/ ^/ f# Wlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))" T" x; q. {( G
;;
及时更新il的评价质量的评价
3 g) U: U' s9 p" A% {( h9 Z: |set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]1 a% i9 H5 C: f. `) \' q
set l (l + 1)1 G. d+ N8 t# I2 M
], z7 v# S6 M- k! [" h
end9 [  g+ L7 R# [
  t+ X0 C% s/ l1 V
to update-credibility-list, c' B  K# n! d5 B& d( W0 R
let i 0
3 j3 \8 }3 [- [while[i < people]) ]! T: e- @$ r7 L) y
[
, O1 w- [" y0 m/ ^* I9 W: n1 _let j 0( j% c& x% a8 L: W/ A/ i
let note 08 ~) U' |* f$ j6 u  P2 a
let k 0- ~& ]3 t3 ]- M4 V$ t! W
;;
计作出过评价的邻居节点的数目
) |! }- w, g) T' r. kwhile[j < people]* F8 _' D0 i- c8 q$ A7 b! B
[
. L3 m: f) ^  Pif (item j( [credibility] of turtle (i + 1)) != -1)& U4 u& ~/ N0 I  E
;;
判断是否给本turtle的评价质量做出过评价的节点4 o! Q9 ~9 ~+ l- |- n: P! O
[set note (note + item j ([credibility]of turtle (i + 1)))5 B" \/ h  S- W; Q& X
;;*(exp (-(people - 2)))/(people - 2))]
7 {) E% T0 l2 i& }
set k (k + 1)
3 B$ D1 X# z5 G  a6 h# `  z]' m- R" q. N: ^
set j (j + 1)
$ d# G# f  F8 `+ W+ C3 \6 @$ G]7 f- A  O& q/ l4 R; }# E
set note (note *(exp (- (1 / k)))/ k)
4 S" B) w% C) }0 m9 s* m; Z8 wset credibility-list (replace-item i credibility-list note), h* `  T9 ^9 T2 t1 g' z
set i (i + 1)
2 W# K5 Q& J1 d& f+ z3 F]
+ _2 {2 p! r$ r. o; R7 hend' j) t" j% K( p$ f% r3 t
- D) V1 S: h; D8 }8 n. [8 E$ e
to update-global-reputation-list
9 m" g  |6 M2 @+ v/ {0 Plet j 0
9 }9 ?* t$ w, `: G* I) b0 K6 hwhile[j < people]( o' N! \* e& y8 B; ]
[# o" ?% f" b/ y, {2 J, p5 C# R! @( d: t, h
let new 0! F9 D& h% [0 o$ ]! r
;;
暂存新的一个全局声誉
, q5 s; Y+ j* Z/ ~! U) \& k9 F+ olet i 0
+ P- G0 n$ ~, K0 tlet sum-money 0
5 s8 V9 w; |) Ylet credibility-money 0
# A3 w" _0 ], \! \' Uwhile [i < people]
! ^, ]* K" j% T5 _[
' A, m& s$ G3 U& X9 r1 G+ Fset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))). k! E9 T. b1 \( l+ Q+ Y+ b+ j6 Z
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
* W5 j/ J4 I+ f. g* [set i (i + 1)$ q4 j- h: w+ t
]1 M0 P% N; U( x7 U( c, ]# O# }, N
let k 08 V5 |4 G' D/ ~4 @6 h
let new1 0
& l8 n1 f+ Z& {6 ], T( ?; c+ Lwhile [k < people]" f6 s# T1 S1 s; r9 u; D( E  d9 L& \6 l
[  d- q5 Y1 t5 `8 r& |: z% o
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)
! D& `' ^/ K6 Z  r" l3 L/ Xset k (k + 1)
0 [% Z: `1 c7 n: O5 ?]
1 {: i1 Q1 V0 Y: i4 Mset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
3 k" W7 `  X/ I$ bset global-reputation-list (replace-item j global-reputation-list new)$ e) H0 ]& P, L! V$ l& t
set j (j + 1)
$ L, y; X5 M  v. ~]' h0 J# L* D8 Z6 j1 M
end
0 Z" J0 O3 G& q; I  U- w" T6 i3 I) ^# h3 Z; ~9 ~
8 h& u7 ~6 F( A% ^1 x4 |

! |4 D& u0 a0 x  Qto get-color* I0 b: `1 _$ V5 j
; F8 q; C7 z7 @7 s
set color blue

  X6 n6 n4 i# U% p- p+ A8 ~end
9 P' _% K+ [5 q1 U! A. q9 P; ~% k, L, M
9 Z* v( c2 Y8 Y- wto poll-class
5 S: R- T4 ?; D* lend) N6 s$ h- O8 O& O0 R

( i( e. x4 D# ~1 N+ cto setup-plot1& z& H- @& t5 o- H& x1 _6 S- D  f& M# e

5 N: S5 a! Y. r) k# Z  {* d' r" k' tset-current-plot "Trends-of-Local-reputation"

3 ]' S% M  Y8 ~  ^! [# }2 w  q
& v& B6 a' d  e' fset-plot-x-range 0 xmax
( n# m  M! W' a: B0 j0 @
" h/ c, k( E  y: G
set-plot-y-range 0.0 ymax
' S( N, D5 M" K1 r4 W9 q
end. j4 J# F9 X1 [& y( l
. E/ D$ h; s6 S3 h9 p
to setup-plot2. ?6 d4 U, z2 }# m) H1 {
, P; e8 D9 N' J7 j/ ]& T0 R& O, e* P
set-current-plot "Trends-of-global-reputation"

2 K3 y2 z; r1 F* S
9 s- Y9 z5 A( ^( l( h5 Uset-plot-x-range 0 xmax
+ J, H" ?( r! C
+ P/ b4 w. f. @% U) e7 E: w
set-plot-y-range 0.0 ymax
: \* n: m0 E: e: A# f3 q# \- C- V  m' W
end
5 G- J% k( C4 U7 O; b
& d. t" W3 e: l& ?* {. Mto setup-plot3
6 }( o; R6 h" F& {7 C  T' ^/ z3 S& C, t# i8 h
set-current-plot "Trends-of-credibility"
  f. w  V( l+ D& B

. A: \  b$ U/ a, D7 qset-plot-x-range 0 xmax

- {- D# [0 c, j8 ?
6 C* c+ v! U( S! S6 Jset-plot-y-range 0.0 ymax
6 K2 O% I" Y3 ^) q  s, z
end6 h: f9 R7 h) g

+ B: ]3 C$ G# W/ D0 C% r! Mto do-plots
% _5 o9 m+ \) J! o0 Tset-current-plot "Trends-of-Local-reputation"3 W; l4 G: T* c' |8 w
set-current-plot-pen "Honest service"; U5 ^  J8 W  o8 T" ~; d& A
end
7 q* e7 Q. }9 r" s
- Y( ~4 n/ N# W# N3 ?7 y6 h# 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.6 l; J- R: s3 j* F4 B

. d9 ?  N. i  `3 D  U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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