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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:
7 h4 l; S  _- N( t7 ^4 vto do-business
% R+ D" b' W! G" K4 h: a rt random 360
8 k" T$ i+ S+ F3 h+ b" E fd 1
2 ]- c: T* a$ u1 r7 s% G ifelse(other turtles-here != nobody)[" k$ i. u( s9 [( g& e$ I; C& h
   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.
- O4 x4 a& X8 I0 Z; ]   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    6 S# P! w9 b2 m- W
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
" h! v, F2 I' j# l& }   set [trade-record-one-len] of self length [trade-record-one] of self
, H9 s# h1 J. u4 y$ N: n   set trade-record-current( list (timer) (random money-upper-limit))
  a5 j/ _$ l9 _5 a5 x& Z2 Z# F! [; G/ W
问题的提示如下:
" x8 r) \# Z. m- h/ {0 C. m+ r4 X8 a- q2 M
error while turtle 50 running OF in procedure DO-BUSINESS
: T( l& m) E) @. ~/ U8 \! J5 w  called by procedure GO
# v3 P- s! A  m# `, m- ?0 \4 F1 M: FOF expected input to be a turtle agentset or turtle but got NOBODY instead.
7 p& k) G" w) f% w/ A# U
(halted running of go)
& M7 X/ ^% u+ B+ X
5 y) M8 y- d- y9 E7 M$ {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~~% z# G/ u$ r; }* J. K& W
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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参与人数 1仿真币 +30 +2 收起 理由
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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
, M3 [/ k0 I& y, k. o  `4 Eglobals[" m5 w* N( L1 \' J* Q
xmax' [8 W) d$ R: B2 y+ @5 R
ymax
& T* e, g+ }. {+ \global-reputation-list* D9 J- p4 Q0 \. b# g* G6 e

+ [# N, ?, F% y/ Z7 A4 L* K;;
每一个turtle的全局声誉都存在此LIST5 y% I  Q+ I7 R' A9 g6 {3 B7 N
credibility-list
' P, M( m! s7 Z" ^$ L! H- l;;
每一个turtle的评价可信度3 L, A& @# m8 {  x! c/ E
honest-service3 v5 ]& w$ _! V9 S, S
unhonest-service( `3 _& i. b2 p/ @
oscillation; a8 G, E$ o3 f: D  l# V( i
rand-dynamic
$ p+ D! B# Y9 j6 m. u2 F3 L]& D, @6 ]/ _* P+ w
% m" J3 W: ~; M. R6 ?7 k0 _9 G
turtles-own[) n! G  N8 `4 j8 j
trade-record-all; ^, N2 k# G  H+ {+ g
;;a list of lists,
trade-record-one组成
5 i) {8 k& v1 F  O7 p* C; v& etrade-record-one( \# \9 [2 X0 K2 ?2 Z# N( ~' o
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
) F) {  l3 F' M6 ]9 B- M/ c7 z+ z/ p
;;[
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]]& D2 Y- E- G8 B+ m$ C0 `: z/ r
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
( j8 V: |) M3 u" _  s! M+ xcredibility-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/ ?- T4 @3 G( T. r+ G- i0 J
neighbor-total& T' q' ~& a4 j' w
;;
记录该turtle的邻居节点的数目6 y6 I  R3 U# w
trade-time
$ x* }: ~6 |/ d# A$ _;;
当前发生交易的turtle的交易时间
) f& t) H- }9 R) N0 rappraise-give
. G8 ]- v8 q5 V8 ^2 V- d;;
当前发生交易时给出的评价6 E0 r- R, o7 r& q! |
appraise-receive
$ V, ~' @# A; D1 w3 w;;
当前发生交易时收到的评价
/ h1 G7 T1 u8 Z  Rappraise-time& e! |2 I" Z2 G
;;
当前发生交易时的评价时间5 ?: g- o6 i8 w" ^
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
8 _% s. n# H3 {' D; n; ?# ltrade-times-total
3 W  S+ W3 X9 u9 x( s;;
与当前turtle的交易总次数
, }; T7 k- z! s  z! v( strade-money-total) c- Z: U  @! Y
;;
与当前turtle的交易总金额
0 e2 v7 R% f7 |- X* Z4 o: l$ d/ e8 tlocal-reputation% t7 u% u- ]7 z, m( @! ?6 G
global-reputation
( c. n* l3 q; O* D$ V: ]credibility
$ U0 |& V) ^! N. |9 T;;
评价可信度,每次交易后都需要更新
  q3 T% _" s6 E" {' Q4 Q* ~credibility-all
1 K/ |5 c- Q$ ];;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
* p1 }; F! {" Q
6 r6 ~# B: \: S# t( w8 y0 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
' @9 M2 r- A3 e# y$ L$ m! F1 acredibility-one$ |0 f' L- J& L+ h" p( |' 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people3 w) m- Y" k/ u$ Z) I
global-proportion( [% u( Q  t# `6 e% {. A
customer/ B& k) e5 @% i4 r
customer-no. Q) k1 c6 n. b$ \( o  {9 f, r
trust-ok8 n! v2 g. x' l" E7 M, b: {
trade-record-one-len;;trade-record-one的长度
3 p7 }3 e& J( x# o+ w5 d6 s  j]
0 [; A3 b5 z- a
8 {) \+ ]0 N" e;;setup procedure1 X' h9 U7 ~& L& T

, j: r* P/ r( q' Dto setup. S; I$ P" D" q$ C! i) o; ^" Y
0 v# k" v5 v- k* D
ca
: J, l% n+ }. @5 J0 i0 t2 s
0 o  Y; n; m2 S3 o8 _) {% T* Z
initialize-settings

% U6 M& w  Z. C" s6 d% p  B
- @" ]9 z) a  l! q) x0 u: Z, Wcrt people [setup-turtles]

" k% a  n( Z4 G% M3 g+ a/ w
5 C$ S8 o/ j$ ^6 g. {reset-timer

7 J. ~( N4 V5 r, b* S. }8 o# V- m- D% d
poll-class

; J' C6 n4 u( V; {
" p) i5 X# [( p' v' j( osetup-plots

; _% K# W3 K$ Z' t* K. ~3 e4 {2 ?  j" B! J6 b7 o; s3 [) U
do-plots
, F; r/ {7 l, e' a# l: S$ p* ]( T! e
end, ]! R7 u- J; L% A1 r( G. R
7 }; z8 _0 n6 {+ d  F
to initialize-settings
4 ^8 R/ j+ _1 G! A4 b6 B
7 G2 M3 g6 ^1 }0 F$ yset global-reputation-list []

6 e5 E8 ?# a  J1 U. B+ G* o6 }. u8 S  S
set credibility-list n-values people [0.5]

1 _" j8 |4 E5 [( k$ ]. i6 P# v5 R
8 ^' T* X( z. K3 |$ mset honest-service 0
* a7 i: |- n/ f: h- V8 V

7 J4 t* t6 c% b( q3 Hset unhonest-service 0
, f1 }5 v& C5 D
' A6 V: q  v+ [( P1 f# r" ~
set oscillation 0

; z/ J# t9 g" g" k  q$ X+ X- g. g1 E9 K& x$ T1 A
set rand-dynamic 0

; b% _. ], D6 N8 e1 W5 j/ e; ^end
% D+ S  q/ [. n/ S( s9 z% c; y, ^% i  z1 ~* w! [* w3 r) k) x
to setup-turtles
4 ^( S5 G0 `5 I: L4 ?' I3 h- qset shape "person"
2 h$ K% b1 u: M5 N- p3 _( Nsetxy random-xcor random-ycor
2 Y2 H) t: n5 ^% |) a% `% Kset trade-record-one []
: H: M* N! @/ v3 f/ E0 Z1 `3 y/ n

, x0 a" h" P" U+ ?5 n' Dset trade-record-all n-values people [(list (? + 1) 0 0)]
4 i& q: x$ b6 e& q) L. M
. \* @5 l3 j2 p% w+ _$ N3 W; E
set trade-record-current []( j1 h( [+ e$ N# {' A  p2 L
set credibility-receive []# J# z, |% ^& @$ f$ c# g
set local-reputation 0.5' q1 A- g- h4 F" j
set neighbor-total 06 m2 [5 ?  M7 G, c/ g
set trade-times-total 0
0 F' i2 v: }6 b7 S. m4 E4 Q+ s1 bset trade-money-total 0  Z& O7 f  T7 A, e
set customer nobody
) A/ o4 U/ o, }3 E+ Y& ?0 D& J  f! jset credibility-all n-values people [creat-credibility]% W$ Z' J# _5 h- q2 m4 S4 }
set credibility n-values people [-1]+ h. t- n) ~# S2 e0 P9 w- ?
get-color4 q' a& r, h! n, J: z

% Y& V4 S) n0 ~4 ]8 b$ Jend
" b# E# H0 P# T3 B- v+ D$ W( R
0 u) ]4 [+ }1 ]2 t7 |& ato-report creat-credibility
% P& W8 ?( v; k  L) r/ Kreport n-values people [0.5]
8 i& T# i# J: D4 n4 jend  A( E/ r. J7 `; G. o8 H% f3 t

! f$ {! E$ ^) d& ?" }to setup-plots1 K8 b* s% R. O- g4 N/ \2 o, b

/ ]& B% v, q: x9 Xset xmax 30
7 ~- K6 I7 S# s4 o* `' T8 N* p

) T5 |1 y9 ?* D( f+ Xset ymax 1.0
& K/ w; N# c7 H7 o% P6 F

" _2 u6 x  Q3 t6 r1 Pclear-all-plots

4 X3 M* w6 ~+ C# s1 R) I# R/ h) f4 L$ B0 B( g* j# P% s
setup-plot1
0 P- x3 d( J7 T9 b7 C4 ?2 a
! u- w: F, p6 E
setup-plot2

# x% Q% ^! Z6 x6 n" b
' p- b) C* Z7 F; ]1 n0 N/ Lsetup-plot3
8 G3 L9 {9 l& f( l) z4 }
end' g- J. X" ]) E4 {  i- u
6 B' J4 q- s) c3 x
;;run time procedures6 B* J, r' S2 Y* ~! M; g

: O3 E6 B! i. a4 x* V- W( Kto go
2 I4 J* L8 b- M3 J& m8 d; p$ k; y/ |; O7 f% \6 L5 L: U$ f
ask turtles [do-business]
( k9 c! e( \. N, f
end
5 I2 i# ^, J6 \  {+ E) h& `4 z+ c' q* P4 _6 G+ }# J% ~
to do-business
$ N7 W* m, V8 U: a& t
2 N9 E. j# y) [0 p5 ~
8 o! E( r% |7 n) l( d' i4 J
rt random 360

+ D1 C: G7 J. M* G0 Y5 K7 k- S) n* @& n  x# P: ^1 p6 z8 Y
fd 1

; U* e" g8 o1 ~6 V1 C: O/ R( S# u% B' f2 S5 n! ^. C
ifelse(other turtles-here != nobody)[
2 a2 D! H6 d) f: W

* G) j9 s7 f, r) Z  r; t- S6 Hset customer one-of other turtles-here
. p4 U0 R7 y4 h) t$ S: q3 u
5 i; R0 J. l/ _/ E8 V) U$ B1 S
;; set [customer] of customer myself
1 `+ ]6 G* I& @7 t: H$ g
' t2 G  h3 ~# u$ _
set [trade-record-one] of self item (([who] of customer) - 1)0 p( W% b5 C7 J6 l$ ]+ Z3 [
[trade-record-all]of self
( y& d6 d4 a& H& F, J5 d. S1 q2 h) X;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

8 @+ Y) a, h' M' a* R3 L+ [  ]# ?+ Q5 @1 w: f+ }
set [trade-record-one] of customer item (([who] of self) - 1)0 a  |' A, a6 H# @$ X# g
[trade-record-all]of customer
& L! k8 Z6 R: N' t- D

7 n7 ~) e/ k! W6 R8 \; rset [trade-record-one-len] of self length [trade-record-one] of self

- Y" m5 ?2 z8 n" [# z( s
2 f) Y; I5 g+ j2 z+ dset trade-record-current( list (timer) (random money-upper-limit))
. w( D; [% y! |- N) c

) T0 O% v) o/ h; Kask self [do-trust]+ s, n1 U. ?" p/ z  x5 k4 I, v9 O( N
;;
先求ij的信任度
" W/ h1 R. g- J+ Q( {0 d9 S  J
if ([trust-ok] of self)/ }1 P: |' `# K  M; f( _: z% s& z
;;
根据ij的信任度来决定是否与j进行交易[
1 H& ^: u) G; i  ?. p  Zask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
6 A+ t, k! \' ^5 z9 Z" v9 @' e0 O+ m: ^! ^" w+ O& e( Q
[

2 ~2 s" u6 M. i( T0 X& }' [/ a* ^2 c
4 x. }' p, X% H  ^do-trade

; W. S- ~" ?5 ?; \
4 Q  x+ R9 o% k6 ~update-credibility-ijl
; R8 C2 c: V9 J& n7 H$ z( V, [
1 X5 o8 O1 o, v  e0 E1 K
update-credibility-list
/ G+ {0 o9 I( Y: I" U8 v0 p

  p( |+ }/ M/ e" Q+ ]6 B1 y+ K6 d6 V; S
update-global-reputation-list

" l3 D% ~8 S, k; m; f5 R2 p. ]  H8 b  U) ^! E* g9 X
poll-class
' p% {9 \% ^0 Q% B3 w* Z8 P

+ l, j) z5 ]3 {4 f/ Aget-color

# ~/ P& R- e% c) T  j, x0 s' d
4 l/ g, D% Z$ J9 N9 G  N% {) G]]
; `) O) @6 b# m  G; i% w0 x
/ q6 f; Z( N* ~& `/ L) g6 A2 S;;
如果所得的信任度满足条件,则进行交易4 r/ p  [4 ]* F& J: t+ [8 k

" L# l8 b% B" p[

9 T, h, Q7 ?7 _/ a7 l* c1 w- R3 F6 n0 T+ s4 a
rt random 360

; f; f' w/ t4 N1 n! x# P/ P. Y* ]7 d; Z7 z
fd 1

; R+ |5 N9 s# n( @# w  f- W; v9 z' A; F* S# r
]

5 f* G; y& Z  O3 a) [" E
- s0 Q: ^& r# H- cend

! O/ F& |, d4 _8 z8 ^. F
4 K; X# }& ^' Pto do-trust
2 [) o& [6 ^- H) |0 fset trust-ok False7 j: c; y! h+ o  g. }4 U$ N
% ~/ F6 H- E4 f7 Z2 S+ a2 `3 f
" u: A" F" t+ u% i
let max-trade-times 0/ c) X( G/ ]8 h' C7 _$ T- Z: ^
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]# ~! v; Y( O8 g
let max-trade-money 0
; B& L4 i( l* y3 N; G! a1 y) M4 Fforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]8 ^+ K8 c7 ^5 G+ q' ^" i" i
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
! O, L5 _. Y# x& H- E- r+ J# C/ ]

1 W, w; L8 Q$ B( q7 t- Y8 ~get-global-proportion) ^/ d2 a0 y$ _2 P0 R7 v: ~
let trust-value: P6 l( y0 r5 \( f" R  H7 y/ {6 b
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)
7 q# s) l# {( l1 o; s9 f
if(trust-value > trade-trust-value)
) w, D2 ^* P) v7 i/ p6 {[set trust-ok true]
2 W, ?, k* m9 ^5 A: Bend: T: m2 H# y0 e9 S6 o: h$ s

6 {! O5 s, w! w1 @6 rto get-global-proportion
2 n6 b$ d8 X8 ?( K$ E( {ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
0 p8 @" L- j' e! O( [[set global-proportion 0]* P) `& f3 @5 |; [5 ?7 j: J* R$ q' D
[let i 0
; O; g% R. T$ Clet sum-money 04 ]3 x2 U; @. u7 i1 Y4 V
while[ i < people]9 O$ `2 N+ D' }$ H. m6 c6 d
[( F9 S4 O3 ^' V) R* T
if( length (item i! F7 e6 F. ?9 K/ {
[trade-record-all] of customer) > 3 )

4 F# L9 Y( {/ r# ?& G1 b[
" [/ H3 `( V% M: tset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
: }* ?4 {2 e; ~' P3 c]) j# z; ^7 S. [" v4 p- o
]( r9 P* v$ J, x- n" }' f
let j 09 ^0 I& @. v+ B+ D
let note 0
/ U7 ]# M7 O2 D- c& p3 A$ @$ ewhile[ j < people]5 A* f1 k) N+ a* _( u8 V
[
  |( q3 p! a2 W6 t! U! D5 |! \; mif( length (item i
. t  X% |* \+ C' x: ]% R[trade-record-all] of customer) > 3 )

7 l% E( c. v4 f# Z/ \3 t[6 d) T0 W% |0 H, Y3 O9 W4 V3 U
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)2 s! _) Q6 F$ U4 o% |& Y( M) X% Z: Y
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]* D1 ~6 j# ^/ M# ~1 u
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]+ k6 o7 |+ @4 d! q2 c# ]( [
]
$ j5 O9 A/ y* k- ^- A" |! d; T]+ k- L$ q7 F3 l, W, |6 R1 p2 I
set global-proportion note
. c: @: @$ L, z6 R  O! f" O8 u]$ m( ^! f! ~- [+ B' ?
end% E  @9 |: _7 [# s& @; o: A

6 r0 {) }& h* p3 \, ~( C& H% S; nto do-trade
) ~* y9 ~* b: x; d' \;;
这个过程实际上是给双方作出评价的过程
, [# O8 l2 Y# s& [( h  aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
5 X( j* T- R( {/ G% Wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价7 L3 d0 @7 {* J2 m1 D; B
set trade-record-current lput(timer) trade-record-current8 z( @8 U/ i. z: Q7 h: X! `7 f& X
;;
评价时间! B1 \* R5 E. G; m! w
ask myself [) F. j( q- w$ K; `  p& }
update-local-reputation
5 ]; h$ w( P2 K# Lset trade-record-current lput([local-reputation] of myself) trade-record-current
( |- ^9 b% [% [' F1 w]( O; y2 f# u5 _4 j: ~% Y% R
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
6 e! A) v& _; F3 F' p: f5 Y;;
将此次交易的记录加入到trade-record-one
4 K2 m% I) p8 M3 H" }set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
# M: ?% F$ q: |5 \0 ilet note (item 2 trade-record-current )
" W9 L! i; r/ Hset trade-record-current
- d/ P; H* W% R9 ?" F4 L5 O(replace-item 2 trade-record-current (item 3 trade-record-current))

' ?3 h- l+ e4 s5 I) d( n: kset trade-record-current* ]" s+ }  S, r* J8 r$ W' h
(replace-item 3 trade-record-current note)
* W+ ~. P2 z  {! M$ s) a, r
3 O3 e- e$ w3 N* v  c

( o, N$ Z# K( L3 j. xask customer [
5 C5 R2 H' O! E9 E7 }2 Iupdate-local-reputation
4 y( Z2 R1 K* }2 \# {4 Cset trade-record-current. p$ j, o! d3 }0 |4 j8 I9 I" e  _3 d
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
, |  u- `& O5 z$ W7 z* l. x3 h5 i
]# P3 H  }1 J$ ^5 r

# z) |9 g. j/ Y/ n4 c  ^3 k: Z
7 e! e" v/ x5 I# G" a
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! p3 Z( R+ z5 b
2 w! Q  ?& ]4 T: g* j5 d/ i
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))! B5 r/ B; |2 Z# C6 F) \6 h
;;
将此次交易的记录加入到customertrade-record-all
/ B$ ^; U3 G$ P  ]6 }" Pend; i" \9 i0 K! |  ]$ t3 q

4 Q3 _2 W" s$ X. Q9 s: V7 E, @to update-local-reputation7 j9 j% n4 G+ K/ _3 \6 d3 [
set [trade-record-one-len] of myself length [trade-record-one] of myself
& p& c6 l8 ~# w* E6 J! I' ]
. A" w, _, c- P
. l. S4 K  P7 o, V/ u;;if [trade-record-one-len] of myself > 3
+ p4 @+ M' {8 K
update-neighbor-total
6 M9 Z5 R2 G! s2 M2 R, Y$ Q;;
更新邻居节点的数目,在此进行
3 W$ o2 n" ?$ V; Clet i 3
8 u) D$ f; \" q; k0 e4 Ulet sum-time 01 \& L* E$ y. e" o  M
while[i < [trade-record-one-len] of myself], G* x! ?, X# s" b- {+ z
[1 H- z$ q9 C& x
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )- x; A$ V$ d# I# _' x8 ~
set i
# b# y. y: v4 A( i + 1)
. [, m$ c" s4 i+ p
]
  U% Q, c) p$ h! W, slet j 32 Z! w+ o( Y: Y. F4 X/ z+ `
let sum-money 0# ~4 p2 L' J/ C: p4 U
while[j < [trade-record-one-len] of myself]
& m$ G. Q3 p0 J! V7 N4 T9 }% z[# m5 y) D7 s0 ~0 ^
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)
% C1 k" N; \5 D" Y: z% jset j
  i' r0 u1 L& Z' i% M6 G' M. p( j + 1)

$ `6 q5 l3 z9 B# b* o. W# Q]
* F$ l  _) L! ]+ u3 _6 xlet k 31 n% z; P0 b- Q8 O
let power 08 B) k, g; H+ H3 Q) E
let local 0
* }- D! ]2 u  G( awhile [k <[trade-record-one-len] of myself]5 G2 U5 T9 y+ O6 \/ v$ g# }
[5 o/ X& _/ x+ k  R, B
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 R9 p5 r3 u# pset k (k + 1)' u0 N1 Z( E4 \8 y5 I
]2 p- P0 s% h: [1 p! Q( f6 t" _) J- l( t
set [local-reputation] of myself (local)4 ^% p0 @+ j* r8 Z# Y* Q
end+ j) w4 H& M9 e  ~$ A- e% Q$ P
6 |! ?- {! q# z& N
to update-neighbor-total
. Q" s% W4 {1 k# E& Q" X# e' t5 k' m* u
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]! O) M* s" l% N5 d$ H
& e) X1 ]4 C9 c% E

, M  F7 l1 u4 kend  u/ y9 t$ A1 E% V, I
8 b4 \5 c0 m8 G, J! O* P3 g. a
to update-credibility-ijl
5 b0 r* j! F7 X& y1 h7 W' X. {+ g
;;
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。, L; G) t9 `6 Z, b
let l 0: M% \- k% C, w* s8 K: Q$ _- j, j
while[ l < people ]
* |$ V$ `; W1 Z8 D5 G% n! D1 Z;;
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
5 I* Y3 b+ {+ u% I, X' C[
1 _9 C9 i& M+ ~! t% ]let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
/ M; K! `5 j2 c7 vif (trade-record-one-j-l-len > 3)
& `* D1 ?1 |8 ^[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
" m( p0 V0 F6 Nlet i 3" V4 a" k* [1 m5 b
let sum-time 0" o& n$ a# B8 d. O5 d
while[i < trade-record-one-len]
4 }& ?1 H/ \5 ]% S* L1 n[
  `; C0 d9 Z% G. s8 p9 ]set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )+ z7 i6 B8 Z" t2 Y! d- T& o6 Q
set i
4 ?5 u; h9 @, t5 \/ M6 ^6 y9 W( i + 1)

& f0 b' ]# f0 J* _& W1 I( r4 p# @& []2 Z4 N8 O3 }/ U2 M3 B8 u2 Z; n
let credibility-i-j-l 0
4 w. x1 y' S; `;;i
评价(jjl的评价)
/ U1 i- \' d! V1 m' L0 `; ^3 Glet j 3
* \$ ]+ |: O  C: C  ]% ?6 o) V8 O. blet k 45 T' k" r; Y0 R6 E  u, ?8 D
while[j < trade-record-one-len]
/ _% u& n- H* j7 V1 p9 I) l: P( r[1 @, o1 |% U# t) |( `$ r# C
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
' p( L2 b' U: w6 i/ g! jset 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)
( Q9 u+ ^/ J- K8 P% C; y! G+ U% Iset j
, b: K% E& l: S- y& p3 T( j + 1)

7 T0 t2 G3 W( _0 M! b; |3 n]
( U( Z: J$ X1 A8 j* [1 n8 y0 h& Hset [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 ))
; C' `  w0 P! g8 J7 _( E9 O6 \; B  \$ ?6 m

. m( t) _- @9 D1 c7 blet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))1 x' j& R# n: L9 R- ?* _
;;
及时更新il的评价质量的评价! Z/ `0 ]4 A/ G% W% T- k6 q
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
- U( a1 ^* X. Yset l (l + 1)
, N# N+ S4 _- T]
  }+ q# w& @4 a% vend
' Y" J4 F& p- g7 M
% l$ F- ]6 w9 X; ]6 Fto update-credibility-list
& N8 e5 a& U4 j' @; r: M, P0 X: qlet i 08 E6 W) p/ o+ l: V; f, }  F' T4 p
while[i < people]- T- g( L! [( e# Z
[
, A0 O9 f4 ~6 J! L# hlet j 0+ T! Y4 I( A: Q9 U
let note 0  Y5 C5 e9 l% r) C2 {! Q$ {
let k 0
. x, u2 d) I% s: C+ k# v. h  y;;
计作出过评价的邻居节点的数目% h6 b4 [5 Y! Y
while[j < people]
! e" r/ f9 F! z9 S. d0 }[
+ l* t, f( b1 k# @: ?$ p5 W/ {if (item j( [credibility] of turtle (i + 1)) != -1)- |. q( ]$ F) J7 }
;;
判断是否给本turtle的评价质量做出过评价的节点! j1 ?4 I/ S# ]* W# @' ?" U
[set note (note + item j ([credibility]of turtle (i + 1)))
: k# V" z& S, N. _0 F;;*(exp (-(people - 2)))/(people - 2))]

, q2 ~( I9 K# h1 J: C. J6 Iset k (k + 1)5 T! k2 U, l$ f. O  d: l! F
]* U) v4 ^. j( W. A  f
set j (j + 1)  n# c; }1 Y8 U% t: A) b8 v
]
. g8 {' w) Z( o) }set note (note *(exp (- (1 / k)))/ k)9 H, R: F; O5 G, }5 j' G) y' b
set credibility-list (replace-item i credibility-list note)2 ~& p+ E( a7 h: |; [- Q
set i (i + 1)) U4 ?% g: j+ K' x+ H, K+ ^2 g9 I- a0 A
]
1 Y9 r- O/ r1 X2 x4 mend: _5 f8 E/ X) _) U4 Y  `0 l, d. y$ R- f
3 g9 `  R5 d0 \2 S
to update-global-reputation-list' B) Y+ \( \$ ^: ]0 p
let j 09 W6 n) [9 C+ r$ r. O3 U
while[j < people]# R, w" j" p. k" q# u8 ~
[) P! h" `1 y. k! {; F
let new 0+ F. z; o. a1 v: \- K
;;
暂存新的一个全局声誉  @; q% v% {2 g* |9 f/ o$ I9 n
let i 0
0 S; t0 C9 h6 Z3 c- h. [let sum-money 0' w( I+ X) {2 Z; a; [" B
let credibility-money 0% x1 D) A$ E' S& t" E! b
while [i < people]( s' @% ]4 q% @, [) O
[
) V( U* p+ F+ h" ?. y) O) ^set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
! Z" d" N$ K' h" ?1 W( U8 yset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
: E& }1 n. Z- }; Mset i (i + 1)2 A. p# D$ ?+ A. o9 \
]# }, q4 H" J& k. d" k4 ?
let k 0
: q% r6 C' Q/ T& `. z( S* L4 Nlet new1 0
7 Z5 C9 {4 r( i7 jwhile [k < people]
8 B: M5 i2 E" W+ H8 y  C' U# p[
3 n0 Y7 }4 `# m( w" Z1 z) p6 g( Wset 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)) S9 _5 P8 I) d3 E1 L4 w
set k (k + 1)
5 @  z( `9 a. [& v! l; f! ~) w& []
+ d/ t- l4 Y/ L3 c" oset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 2 W6 ?3 j- l6 o/ p$ u6 M
set global-reputation-list (replace-item j global-reputation-list new)
& x+ ]: W& U3 X- e) I, m, ]! U. Dset j (j + 1)
1 {0 \: c8 ?  }' W6 @0 g% ^]
0 [0 w$ \4 w8 z8 Hend
/ Y3 n: s6 Y4 D* d. U$ J' B) ~4 W
, K! r' S, N! m* C( T' i& ]; L
; c; p2 y: }% X6 w3 v6 S2 P! g6 |: i$ L4 N
to get-color
+ E, Q% _1 d7 V3 L# U; _! m9 Z! r4 O
5 h( C: L# R- w$ P. I: V' V% \1 \set color blue
% `5 q. V1 r# [
end
  {7 w$ _; @( c& P0 S5 I. J+ o% E7 X" b* G- H
to poll-class& U( A( b5 A# s9 D
end6 Z. W, b0 C1 k+ S  J  L; O

  ?' |; J2 h  h! j% }to setup-plot13 z1 U2 D9 S: R& C8 y

3 U; s+ F) ], \- u0 Eset-current-plot "Trends-of-Local-reputation"

+ O+ C4 f; W1 }: m! T, l
& S, t  }( p) ]5 O% ~set-plot-x-range 0 xmax
" j* r) V, f; G5 W% r1 u# t7 o
2 i, ^9 A& |' Q3 S
set-plot-y-range 0.0 ymax

1 w. A  c) f6 }9 v: U3 |% Cend  j4 L/ o' D+ S1 R5 P( ]9 h% O

: G/ S( f1 k# ?( H- w% p, @to setup-plot2. H6 k; P; j0 c7 S+ Z7 G
6 [! E8 u# M* `9 z5 F
set-current-plot "Trends-of-global-reputation"

$ t% a' U4 Y7 Q+ l/ i* ?6 w. k, s7 I6 S
set-plot-x-range 0 xmax
1 E6 T2 y  e2 v( W. N# K

7 j1 W, w8 `6 z3 ~5 V( r- {4 @  jset-plot-y-range 0.0 ymax
( t- n9 h7 x* n7 ^- w
end# c  E, z' T7 ]9 v

; B( `; R7 `4 @to setup-plot3/ Y% p  v0 C. ]% T! x6 N% ~# H; ]2 T, m
8 E  x6 l% U. K* s0 y# j0 c
set-current-plot "Trends-of-credibility"

. S6 F" m( v/ l6 @! m5 z' V
+ |4 m( t* d6 _  u2 g1 B; s9 q+ ^2 k- Lset-plot-x-range 0 xmax

  N9 O1 |* d8 }) G1 J4 j% R+ A9 ^. L/ q3 D1 v9 Y" T  z4 `1 n+ D
set-plot-y-range 0.0 ymax

3 s: t1 c( q3 {" ?end  [) t! F' Z3 G- X" l7 ~- `  O
# P0 F0 m' R. w- V6 ]
to do-plots
  g, R  J1 f/ r  M& |set-current-plot "Trends-of-Local-reputation"" J' k: A1 x# E2 C4 m
set-current-plot-pen "Honest service"; S; |2 |5 ~( X; k
end/ A4 D( p# j3 k  M) ]4 ?

2 t/ `* @% I# {3 W! {. 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.
; R  N$ O; Y; ^& j) j; V+ _$ }
+ ?% P0 c4 M7 ^1 d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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