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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 G8 U% T: v! u, ~0 e' M2 e
to do-business 6 y$ V; @# Z" z+ B# V$ L
rt random 360
/ L7 }  {1 E% | fd 1
4 l( g# B: x4 l6 g  C0 ]* S ifelse(other turtles-here != nobody)[
6 Q; @; g# j8 V8 r! s7 a   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.8 M$ D, C9 e4 N, B2 k
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ) c* o# g* \. U% A/ E1 Q# G+ G
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer% q; U3 B4 {! N) `) W: L5 ?
   set [trade-record-one-len] of self length [trade-record-one] of self% n( J4 n7 r1 n9 S- ]7 a+ S4 h
   set trade-record-current( list (timer) (random money-upper-limit))
, ^" m" B. G( u" x9 E5 N! p; I+ B4 v) h, y% ?
问题的提示如下:
; y3 n( [8 m* @6 h. v$ z- l1 \) C9 j2 ?* t+ m0 @) u) ^$ m- W
error while turtle 50 running OF in procedure DO-BUSINESS  Z0 i% D( n4 B0 g
  called by procedure GO& j/ [. Y( U9 y( Y8 D
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
! }4 H0 H# V- ^% ]" F6 C' X
(halted running of go)! D" S' n" X+ i& b# X( q7 G
# E$ h# D9 I5 \
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~~& n; ~& O, {9 v4 j% N" r: Y) {
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
. L+ z+ l: w% B7 d* U4 {/ F# j1 qglobals[0 A  r7 C- K9 p8 b: Z7 P4 y7 \
xmax
- s6 }$ w) I  F) p) M) Fymax4 L$ z$ R, _* F! ?3 n) q
global-reputation-list
3 K, R7 w+ A& R  }# p) R& W8 Y' C- Z3 z* L7 d7 p( j7 c2 V
;;
每一个turtle的全局声誉都存在此LIST0 n8 ^+ L: w9 _0 m% S0 Z
credibility-list
3 q' T3 H2 S& m7 ?8 f6 B" a# r;;
每一个turtle的评价可信度
% Y9 k; V; W- T6 d9 [honest-service! |3 P+ t+ [$ v7 a" ]/ R
unhonest-service- y4 _; x( W4 _2 {0 h; b5 d6 }4 R
oscillation
& a, w! x; a0 K3 G* Xrand-dynamic
* z5 u- _4 @5 J" ]. V1 Z1 |]9 W1 H  J3 |; K/ _" ^: z0 r! F0 w

8 f7 z* e6 k- M( U7 x. B& aturtles-own[6 }  p, @0 P. P
trade-record-all7 ]8 y; D6 P) u
;;a list of lists,
trade-record-one组成$ R5 e  L$ a5 E: A: _5 q5 E& u' }
trade-record-one
* ~+ T9 A% d7 F. T; r& j) ~# Y;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录# B5 C' n& d3 R3 R

+ p4 B  l) N- F8 @( s% d8 ?;;[
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]]- ?' @. c/ I$ f
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]
, S3 O" R4 l/ b4 m, T: o, Zcredibility-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' y8 ]$ E% Kneighbor-total. e+ D# s! @  C+ B) M% p+ X
;;
记录该turtle的邻居节点的数目& J; R! M3 {) e3 M, l* _
trade-time
% o) G3 K1 _; T, y: |+ [, v; t;;
当前发生交易的turtle的交易时间# ~8 U  L/ d7 ?! s6 x
appraise-give
* m8 q' p; W6 c8 t8 N9 p* D;;
当前发生交易时给出的评价
7 g; k; _: ?+ m, Lappraise-receive
7 X; n# ~* w' D6 D" p' ^& ~;;
当前发生交易时收到的评价
  X5 _/ z5 k# I5 t0 `appraise-time
2 v. D# ]6 g* S! y/ c) D; C;;
当前发生交易时的评价时间
2 e4 I* U) o. ^local-reputation-now;;此次交易后相对于对方turtle的局部声誉
4 [! `% S/ \& @. H& ?" O. @5 Utrade-times-total
. ^* s# y1 M# K4 F; ?8 V;;
与当前turtle的交易总次数
; R- w1 K" V3 W" N: Y2 rtrade-money-total
9 t$ |/ n* O+ K' M* s' c, N;;
与当前turtle的交易总金额- Q% Z) s# m4 ]7 s
local-reputation
& K/ j2 x% S! r7 O% G8 Wglobal-reputation/ g# R+ e) L$ H& E" I" Z/ \. j
credibility' G+ f2 o/ C' y% f( q9 z
;;
评价可信度,每次交易后都需要更新
2 k! X$ }% Z) ], ^& ^8 @credibility-all) |- z* `* D4 Q+ t. 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. \  x% R- z) Q# }3 A$ O4 j
7 ?6 V) W0 D8 D0 N# S* M& t/ i
;;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0.52 O& q: F! ]# O2 F0 b# [
credibility-one# t( \5 q0 r/ o: y; ^9 t- S
;;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 S* [, ?& k& |1 C1 iglobal-proportion
% k; }" Q: ~4 i/ X) {* `customer
" e$ v3 \$ T3 B# ucustomer-no
0 M; E- N8 d& Q) n$ F, Atrust-ok! M% m7 U# N9 t
trade-record-one-len;;trade-record-one的长度
8 ?3 u8 x' l9 w  M5 w$ Q# z, _1 n! g3 O]% U) @" P+ ^; J& N1 T1 |

& e( i8 y2 V5 b0 n) @/ l: D;;setup procedure
0 h! l% N/ _4 g( H; m, a5 |; E4 \- a' a
to setup
  b+ Y. I' g5 w9 I) z% _0 B% J* \: _
ca
- |+ x6 W# \9 x+ D7 y# d. \
4 _* P8 v) ~5 z, o* ?: V- x, ]
initialize-settings

5 {/ u, L2 l$ P5 a  h4 }
# S( W! }: v7 L) gcrt people [setup-turtles]

" L) ~2 `; c/ h; ^- T9 q: ~2 g
. L+ E9 k5 f: L( H! [$ ?reset-timer

% A3 U0 z2 c- @
2 z7 k% [, c$ s1 S3 |poll-class
5 O0 x+ }. E8 t2 A5 o  z

* B5 [% z1 O( k2 }7 T  B; ssetup-plots

" n9 C6 _# M' ~; E% ?
2 A0 {: {5 n. Z2 A# ddo-plots

7 ]- L7 R+ @' t2 Q5 Z$ ?  S( f* Qend
5 T% X+ {2 }7 W5 K7 X
( ~% ]' }. H0 A2 e4 E1 {, w5 ~to initialize-settings
4 b; _* \/ K/ N! g% \: ~. n; j7 `( g" O7 I7 Z% R' V
set global-reputation-list []
. e, x8 D/ J$ r* j) u! f/ m  p" {
% h+ u$ }! x- P* J
set credibility-list n-values people [0.5]

" D+ s5 f2 {4 o7 v  N; q- e; N2 {
, f" F4 B( I+ F; c" M; eset honest-service 0
% u" M3 X" m4 ~
  v. L7 Z1 o% f& m3 I. t9 h
set unhonest-service 0
8 I! j: c6 Y! l/ j/ e! g( h9 i
6 D! P5 V' b* w4 b+ q4 v
set oscillation 0
+ t0 H0 I% w0 g1 y% c3 X

4 q# L$ L( _' e1 v3 Fset rand-dynamic 0
& e% Y+ l$ b0 g  }& r* z( n8 B
end+ p" E3 q+ M4 ~

8 X- E7 h! c7 i' Vto setup-turtles
: P# e, V3 _6 n! hset shape "person"
# m# f! [. d5 ]) W' C* I2 t8 o) lsetxy random-xcor random-ycor8 |2 _# M6 t: y+ t% X" w8 G' |
set trade-record-one []
8 T. u6 S7 x& H

; h" I& w7 a% Uset trade-record-all n-values people [(list (? + 1) 0 0)] * s( _% f. A8 D- x

2 d! z& \8 U0 Wset trade-record-current []$ g* ~0 e1 [. y0 ]/ U$ U
set credibility-receive []- s1 U3 T( p7 c8 Q
set local-reputation 0.5
! v4 Z5 x2 G- {set neighbor-total 0
; K0 V) ]" u5 g0 F/ hset trade-times-total 0
5 R, Y1 A, }* }3 Gset trade-money-total 0+ c4 K9 N2 n( q* ?0 |) K' u
set customer nobody0 [$ W1 v' l9 z
set credibility-all n-values people [creat-credibility]$ w% F/ g0 p8 y* ^: Z
set credibility n-values people [-1]
1 s/ |( P: @" ?9 A( i5 r, bget-color
! S3 m% Y& D( w5 {6 d( C
; o) ]& L# {7 @- k
end
8 F4 @$ G) p3 T2 o; B) \) O& ^3 _/ i! M9 a& L
to-report creat-credibility
9 y; y2 [5 {: G$ S3 K. Creport n-values people [0.5]! K7 J3 |7 X! W( _
end
8 v2 o* X/ ^' I2 A) p2 g# k5 i4 t/ _9 j0 A& \- U) m0 c
to setup-plots5 m/ Q. Y  ^0 v' [5 p
9 H  x( @2 a7 I8 d6 y
set xmax 30
" u& a8 @! [' ~4 F2 D$ Q
; S; J5 o% u) q4 ^% M; ]0 n
set ymax 1.0
1 X  W& z9 V0 l" \
' R+ J: \, H' c
clear-all-plots

! k1 [6 ~% [* t1 g9 l& k7 J/ }2 b3 x0 I) n4 {8 |, w
setup-plot1

2 u  K: D: N/ z( k8 C+ D2 M% j2 J3 U9 Q5 [: L" {
setup-plot2
$ Q* V( R, ~. g' O" S" h$ G

/ h: h3 b, O, wsetup-plot3
& P- y  m7 q& ~0 w0 ~" R
end
5 H' k5 P: B9 [% M' B2 f6 c9 Y
: V" d5 O" g. b;;run time procedures
. b6 L, _8 o9 ?- r) p1 N  n. e* r. n2 f7 m( h
to go
! Z6 g) m2 q/ V" q! B# X2 K# M4 G3 V3 H) \3 I" [& B8 a  f2 X
ask turtles [do-business]
% @3 f- H& A- o! m$ d, C  t
end) @6 T( W4 [- h' J5 e( E8 c
& O. `, u: b  w4 d  k
to do-business 5 Q- w% i- @+ i
9 y1 |( w5 u' m

! [+ X, d$ R$ m. @rt random 360
) [: C6 n5 K5 s% Y3 E9 K, }! o
: `1 R( v4 J0 R1 f
fd 1

' I5 @/ R0 y/ F5 |5 `% W
! E2 p. l4 b# S2 I6 v* Yifelse(other turtles-here != nobody)[

% h7 M) j0 S& y. W# A1 a- v# h. E3 X. Y& h2 W2 p( [1 s9 ~$ J  I7 a, Y
set customer one-of other turtles-here
$ f$ c0 i: t% s  G) ^: a- t
  ]+ o: H( C  q: T/ Y* V- Z* |& T5 Y
;; set [customer] of customer myself

4 u2 T: h. C/ A! s+ B
( l5 d5 `0 y# b' Lset [trade-record-one] of self item (([who] of customer) - 1)
8 R6 E% g- W% q9 @/ q  j0 k[trade-record-all]of self' i/ n5 R9 a# d) m  T0 C: E
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
& v: M7 Z) n1 ?( f4 i9 V& p$ S

9 |# K0 O8 I2 _! L+ z; p/ Eset [trade-record-one] of customer item (([who] of self) - 1)8 [+ D  T, I& b% s4 Y6 E
[trade-record-all]of customer

: [6 t5 A+ N) `9 X+ D
5 \5 b0 P' l. G2 Xset [trade-record-one-len] of self length [trade-record-one] of self
; I" o+ ]* A* A$ x2 i( E

6 L# D5 u/ N6 \) H2 ^; aset trade-record-current( list (timer) (random money-upper-limit))
$ C; H, q& d- y; Y/ j/ u
3 w/ d, l( F/ x5 t4 j, Q
ask self [do-trust]& W, u6 C5 r+ Q! C0 K6 Q5 P8 M
;;
先求ij的信任度" o% f$ {5 T3 o: I) x) l' l4 K) ?

+ J* Q7 S1 T7 }9 X  x# o" E' \if ([trust-ok] of self)
  O. z/ P  y! Q# o4 [: \;;
根据ij的信任度来决定是否与j进行交易[1 r( {) f2 \3 G* D) h6 i$ L
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself7 H. h& L! N- [. X2 T1 [9 b/ @* Q

0 i' ?/ x, {4 V[
3 i( C2 Z9 L, d6 I" H, K

# L( w7 F2 T, Y4 @+ }do-trade
3 m1 ?  |2 D0 \) S$ M5 W4 m

" F2 }1 V* e) ]/ T7 c! f1 ?; nupdate-credibility-ijl
2 g% d! P' Q: m2 n! U. e2 }
" \2 T4 P% x/ Q) U; A: P5 V
update-credibility-list& p; z/ \+ c8 U! N

, u' m1 f. R3 a% f4 {5 T" i+ X  Z0 @8 V! M8 ~0 _, R- k
update-global-reputation-list

0 u) U* K* _5 F, S; `  M; q
2 p+ h* |" q5 p: _: M' Mpoll-class
* }* V3 A5 e* X8 i7 @/ G) L
* B2 B7 y9 [) n; d& x6 J) Z' P
get-color

7 j' v; Y( V6 |4 K; _" v) K: T: A2 {* R% Q
]]
  J* W4 @, _% R4 h- e. y" N" A( K! p+ ~7 I  ]- j( y) E0 A. x. X
;;
如果所得的信任度满足条件,则进行交易- {, u5 R5 q  s$ G3 w; w! I2 f: d  I

  C/ F' J8 i+ z( |& b/ R[

  j/ a- i; Y5 l: k# [: w* t+ x" I  D1 N
rt random 360
' ?. F9 c0 m, Z, r. Q8 g- F

  F% f" {8 {) x. ?4 `- z! Efd 1
1 d2 F' M6 l. h: Q% e3 V% j
' ?8 U9 j: F: u# E8 ?# D
]
/ T' _; Q1 }& r% m2 z& P) l
' s. R" g! t, c3 M7 Q
end

& a& z" i& T6 t( m$ l
6 g. I# @6 R) zto do-trust
( k1 m/ S2 |) Mset trust-ok False
& ^/ N% t2 ]/ ?, I
" o3 C7 W4 j) a; s* e9 ^1 w

- C8 X- h% i& }1 B# glet max-trade-times 0( \& u( [' j2 ~2 [# b' R6 `
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
& p5 F" k; h+ r+ v  s& klet max-trade-money 0! B6 _8 w1 Y2 L1 b& j8 k: H
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]( ^, z) {4 \/ A" V6 W
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
. a% m3 _! N6 m7 P+ M
+ v1 Y% o! Z7 ]
3 I" |- Y: x5 R- C0 `
get-global-proportion
9 \8 z6 |. [# T! M& ~9 o& ^9 qlet trust-value
3 ~7 x* L  t2 ^; B- W1 j& \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)
0 I# V+ B5 I5 Y# t' f- }
if(trust-value > trade-trust-value)
" y$ N. y6 w9 F& t[set trust-ok true]  X$ y; |7 R' F* @$ y8 u2 b/ u
end! M7 X4 Y1 n2 E7 X% i
3 [' h4 d8 p/ t
to get-global-proportion
+ M6 ~3 T, N1 i3 eifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
+ @) w" x! v$ x1 ]3 h, \  ]* q[set global-proportion 0]
, a/ H$ f9 u1 ^6 f# I3 a[let i 0& f0 t* q5 o. r9 [- G+ G4 p
let sum-money 0
" U, k5 g& X' j8 Xwhile[ i < people]6 q4 C  |0 T% f7 S+ @# O
[
2 Z5 T! q" H' s+ B5 _1 `& c3 bif( length (item i2 Z1 |' B' e& [. J
[trade-record-all] of customer) > 3 )

* w$ e5 e8 O' \. m, ?1 C, v[# K5 o5 u( {$ X+ k$ O! c
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))) S3 l9 q6 t, E; t
]
2 ~: z5 {) t+ {6 p1 f4 U4 w# \]% @/ v5 o, h5 d
let j 0: z/ J# s6 S5 q0 o# c& U( E7 v
let note 0; Z8 Y: ^9 G8 A6 F3 O* Q! Z; j: ?
while[ j < people]
( n$ \" P; \6 G! _; g[
3 B; A& D1 m5 c# e1 b, }if( length (item i
$ y5 U; k: d. R& U[trade-record-all] of customer) > 3 )

& P- f: B& U/ e! x+ I+ ^[
- I/ A% ]7 R/ k. x& kifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)- j/ Q' ?3 T+ p7 J. D7 ?
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]" f% `4 y* g) ]: e% b6 o
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
7 j( L( ]8 x' B4 H& ^9 P]! O2 E  Q$ Q7 S9 L2 p
]! O7 [% m* J0 X1 f2 Q, f0 q4 K
set global-proportion note5 A2 k- R. H7 G3 _
]/ t1 _) O) U' d
end1 ?$ I; \* Q- h5 ^# E

$ g; U! B2 b* g, P8 qto do-trade" D, C% f* u3 ^' ]
;;
这个过程实际上是给双方作出评价的过程
- y: ?' O* J+ }9 V- a3 u% hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价3 [0 ?4 \; r2 v* h
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价- K' S: K) S* I, V/ P2 Q) F3 B5 z
set trade-record-current lput(timer) trade-record-current3 {$ c) y4 b: G- N( q
;;
评价时间9 V8 y! c- g# Q! I/ d3 |6 S
ask myself [3 w6 _; S, m  @: F
update-local-reputation! L* K* y9 z& Y& F
set trade-record-current lput([local-reputation] of myself) trade-record-current
+ @) O7 P; T" d6 f]
. z& M% d6 q' N( [  L% u$ L3 eset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself9 g; l$ |$ u0 ~) J% U1 C- _3 w
;;
将此次交易的记录加入到trade-record-one- Y6 l1 n- A) N+ p
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself); x9 e! F( o- G/ t; Q4 I) v# k
let note (item 2 trade-record-current )8 J0 H" z  J3 L% p
set trade-record-current
4 C+ _, {7 Q5 L% O' O3 h(replace-item 2 trade-record-current (item 3 trade-record-current))

& @- P1 b9 L6 p+ s4 D( n' b! j! a, Mset trade-record-current
- i% S: r3 L2 l  }0 b  W; o(replace-item 3 trade-record-current note)& v# p; ?. _7 b' p
6 t0 \' z# c: g6 |
3 D7 R# O" R- [( e; p
ask customer [$ V. Q9 G/ v3 X% a/ b1 T5 |7 l$ H6 s8 ?
update-local-reputation
7 e! ~' v  Q" b2 c6 w4 ?- jset trade-record-current
6 {  c0 p( [+ M8 ]* @(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

0 ~4 l) U8 V* y0 X+ o) L& U$ Y]; [. V# V3 W: F9 c4 H0 w2 _

* a2 ?% h/ a& A3 k2 b
8 s8 W7 |1 j! E. a% d
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, j& I( y6 x* ?( h
: l9 M, o4 Q. V4 c+ _& _
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
( u* b, P8 c; S( }: R;;
将此次交易的记录加入到customertrade-record-all
0 o: W% `/ {2 z5 a- p$ S& r2 Pend
' b; f; h3 F) I$ A2 i8 d* m4 J
* n4 T% N- c$ I$ E, E& mto update-local-reputation* K. S5 |- E$ a* L
set [trade-record-one-len] of myself length [trade-record-one] of myself# c5 S. e0 l" R. U6 I% u! B  D
6 `2 W! T% l7 a4 x+ d! A

" J  i) W4 J  s: p8 p;;if [trade-record-one-len] of myself > 3

: ]# I  I9 I& O: f5 t1 @1 fupdate-neighbor-total$ u5 [* G" ]' j+ d
;;
更新邻居节点的数目,在此进行& A8 F' g5 T3 v; r
let i 3
' r' p# l0 @. I' i" M, A; Alet sum-time 0% {) x% q  z' t2 @/ O$ d; c
while[i < [trade-record-one-len] of myself]2 m0 e; V* ~  U! B! m3 W4 ~
[
2 h1 U! ], W2 p5 j, Dset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
) F  e) E- v7 w! Wset i8 W  i# o* e% w& u3 |% S) ]. \$ Z
( i + 1)

8 t+ x8 `4 ?: D% G5 D]
' ]1 t0 _' f6 w2 ^3 T8 x# ~& Clet j 3( _. F) |+ Q' u" g8 N* c
let sum-money 0& {* {8 a- G% M" o. [
while[j < [trade-record-one-len] of myself]/ D6 k  ?" i; x( u
[# V" k# N* `: `3 p2 \5 ?! S% D
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)5 p) H# ~) P  [- Q8 ]1 R' P
set j* f, Y9 D+ N/ r9 M% o" r
( j + 1)
6 p" q/ V$ L( h) T! |8 b* ~9 y
]
6 E8 j, W4 {: c8 v% k* j" mlet k 3( A. F) K: A4 r6 _  V. Z, g3 y+ m1 Y2 O
let power 0
/ Z! b8 q: [9 e1 T% i9 [let local 0
7 s- l! v; F$ [while [k <[trade-record-one-len] of myself]  c' a' D# k' S7 j/ K- `7 I! j  K
[' }& t% q6 O8 G0 ?* 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)
& W( F# M( {' a' S# k1 }# l1 nset k (k + 1)) q4 Z' k* C$ I6 C
]
( s' e+ H" z' I; N' D7 U0 c$ Kset [local-reputation] of myself (local)
. c* }6 H  b) R5 |' w9 D) v/ t# {end
( m2 N! I" b6 A9 V2 q( p/ [8 l1 O% I
; ]' M6 ^$ h6 x  l* xto update-neighbor-total( E9 |8 a" C/ T: I" c+ F  K( g

: B3 w: \# ^6 \/ qif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]$ K2 e( g/ C% B2 R

  X8 P8 Y! X7 K, Z8 C6 M

7 r8 X3 P2 j3 l3 Yend
. T( x4 D& S$ \" E- q! B- F- L/ i' n% G
to update-credibility-ijl   z, b# m2 C3 i. i. B& }! U' v  Q

8 ?1 Z3 \/ }" y$ }; j;;
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。/ N  m& o$ B/ t! w1 s& z
let l 0/ J: O0 p4 Z3 r1 h% z4 N
while[ l < people ]
( Q0 d, q& p' t) I3 Y* K7 C7 r) q6 \;;
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
6 W; A2 A/ i! N- X# G[/ R) v  }, k3 a3 L" r; \
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)8 r5 w" o- ~! @: E
if (trade-record-one-j-l-len > 3)+ ]% I" V* B- y9 v9 c
[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
5 T& B8 O( N6 {7 z( u4 Olet i 35 G6 L& H' o% z9 b
let sum-time 0$ n& ]3 u/ U- V8 ^/ y: @" ^, _
while[i < trade-record-one-len]; M- g" L  ]  H9 d- p
[* s" w0 P7 n3 p5 E* d6 M2 L1 Q
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
$ ~. s  k- {$ P$ P/ t+ \set i
# {! H+ I% b" p  r0 y, @* G7 X; t- }( i + 1)

7 N  @% f' t) M' U/ Z8 w. ^+ Z$ J]
2 Z6 g: _1 d7 w: C! X, o/ P) `let credibility-i-j-l 0" B& Q, P! B6 E5 u; c
;;i
评价(jjl的评价)* o* z2 C2 K8 \
let j 36 q1 \6 c* T& M, c, p6 v; q' O! |* X
let k 4% r# T. C# o6 K% o/ }3 S5 q" _
while[j < trade-record-one-len]
4 v0 i. I# p" N$ D6 `/ R( o[( V! P3 }" E* r4 S& Y0 S. o
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
$ Q8 S9 W" {# l9 aset 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)8 A! P! c$ K6 u3 g% ?& b6 N" \
set j
- O3 h( ]! F& P6 _( j + 1)
( }$ |' b' h# b# W
]1 v. P& O, g% R, H. X/ H( j
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 ))
" |  t+ |6 A6 t: R. A' y" K( H) Y1 Q; g) }9 f# a7 s( x

& M) J1 }3 A4 S5 t4 elet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))2 ?" K2 b  e7 l( E; H% S
;;
及时更新il的评价质量的评价
# g& x! f& R4 B, Q" Nset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]  h) @0 I) T0 ?, t; f6 \7 d
set l (l + 1)
& [0 [' @# R2 S  H' v" y, r+ A]( e+ {" N5 M0 K
end
- s6 ~0 U3 v: p$ T% N" I# z
# `6 {, [( f* b& W! |4 E% sto update-credibility-list8 [. S( z7 O# V0 F; i# u, d
let i 0
  y+ c' a: Z; e! `% W8 Nwhile[i < people]) Q  Q% A* t  S% C
[3 o; V) l/ u/ f4 j4 R+ `" Q
let j 0
4 X! W5 X" I( p  _9 Z, W/ l- |let note 06 L7 n# b1 k' S1 a
let k 0+ D* X5 b' V3 g9 h7 B# E
;;
计作出过评价的邻居节点的数目* A! u* U  l. ?' l8 o7 e
while[j < people]# j) ?& y3 z; R) E5 C
[
- q1 H8 \3 ]$ @! T, b- nif (item j( [credibility] of turtle (i + 1)) != -1); L' `. W5 F' \+ j+ a
;;
判断是否给本turtle的评价质量做出过评价的节点- \8 L, Q% l: i) z5 n
[set note (note + item j ([credibility]of turtle (i + 1)))
8 z/ L8 w' q+ l# o$ I+ Z' o7 a5 H;;*(exp (-(people - 2)))/(people - 2))]

) s! u/ T+ A; Pset k (k + 1)3 w: B1 e4 |% z4 C5 z; c
]
) L+ |5 @+ q6 a1 D! m2 tset j (j + 1)
' c5 a  n" C$ ^/ ~]
, a* Y9 Q3 d/ L9 D9 {" Tset note (note *(exp (- (1 / k)))/ k)
2 N3 G5 G( ^+ R% F) f- d) }set credibility-list (replace-item i credibility-list note): s6 }! {' G- o1 t  B
set i (i + 1)
- v$ V2 J% o% w9 }]
& d1 J" }+ s* s! qend
0 \) C$ h) F  o4 _& R( ^6 v. a) A! r6 ~
to update-global-reputation-list
$ f5 {7 D3 G% ?, L7 X3 Slet j 0
% \; ?4 y4 V8 A- twhile[j < people]
. [) y& g2 A! S1 ~[: P/ `' k7 J0 @6 d: `
let new 0
8 S- ?( U, m. e4 s3 t1 ?5 m;;
暂存新的一个全局声誉) P$ k4 y% i9 N% `9 V% F- }
let i 0
# [% o" s' A) L% Q! d5 i5 Wlet sum-money 05 s2 H8 ~. p' }/ o: y7 W
let credibility-money 0
! X' G( }5 J* y# Q  |; C! rwhile [i < people]
- D6 w! T/ ]' q+ O" H" A[4 N( K( [6 {+ H7 t( d0 `2 s  a. Q* Y* p% d
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
1 m4 B0 n4 G" r5 w+ tset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
* Z7 ^6 w6 Y2 M; d( n" Jset i (i + 1)
+ O2 O& e  I, v  k& x4 C9 i. _5 Q]
- e3 d4 f& C* P$ u$ k  ~let k 0! s$ @9 F6 h4 o: S  o. S- l5 ]8 j
let new1 0
* B% a; V3 G, z0 B) b7 I! jwhile [k < people]
9 U9 \* e5 P# Y4 R; Z" d[7 q/ s# X: U2 y# H
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)
4 e1 ~& ]" R2 b* \7 M+ Gset k (k + 1), G. }* ]% Z' m' V1 Y6 Q2 E
]
. D& P: g5 _9 G: }set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) * E$ d( x. P. I" m$ I! b. g4 f
set global-reputation-list (replace-item j global-reputation-list new): d5 r8 `/ b% b9 _* I- t
set j (j + 1)9 D1 \  W/ Z8 p8 z( `$ A
]" f" v+ @8 A7 \6 @" B  h) |
end
1 M/ B4 E2 H0 u
3 W% {; P6 X+ E0 i
9 }; C, h1 ^6 \8 Z, l, ?& a4 M. S+ X! K4 V. e" P! b, h+ a4 p
to get-color5 ~( P; B6 d- W5 F7 p) g$ H
3 H% [- |6 o$ q# s/ P6 ~
set color blue

" _; y2 `% Z' [7 m; oend
$ _: E. v+ Z- o$ H" [
9 `$ e5 C3 r1 K: H: ~( kto poll-class
# ~. g) E! Y6 ]7 @5 s; Mend
5 g6 T* p/ ^9 E0 l( q" A" u
2 _( a, S2 K, j: F% U7 f6 X; gto setup-plot1
7 B) K* `! h; ~1 L1 O% _
% h  h' H' t. Rset-current-plot "Trends-of-Local-reputation"

! _/ x  ?- I$ F8 M4 r( m9 I& P3 O9 T7 d" L% U* L, R
set-plot-x-range 0 xmax

% i9 G: o/ ]" G/ h, g% D( `7 d( W/ Z% f# b7 j# N
set-plot-y-range 0.0 ymax

' u: F$ E8 B2 V2 t% Xend9 x: V" {0 d) \5 [$ [) H' y
4 i9 T$ W1 J; _! X: r
to setup-plot2
6 @$ j2 `7 u1 {0 `6 o% B% s
' X$ e# A! B  k$ Zset-current-plot "Trends-of-global-reputation"
# i1 z& C  V0 X2 @% T$ q$ {

2 i% w5 g; y2 G: ~set-plot-x-range 0 xmax

4 H  e6 f" }- r3 Y9 ]/ l7 D) m: o0 M# U& X: M
set-plot-y-range 0.0 ymax
/ @( I6 f/ l8 e6 t- [& |7 [" s: A
end$ s  j( v- f' m4 E, N1 d- Z

; k5 P: M1 I3 f5 Qto setup-plot37 R$ u) c8 t0 s& _

, b/ W8 V1 _3 r8 a$ \( w$ xset-current-plot "Trends-of-credibility"
0 m$ S- G+ j' w- P* O; l( l

, n6 r6 X4 [7 }' l: |set-plot-x-range 0 xmax

4 D8 m$ Q3 s- U/ U# q/ u: K7 K/ B+ u! `) a
set-plot-y-range 0.0 ymax
, P1 V1 F( [& Z+ p! l
end- \3 N$ t1 M! X( \; }
0 U1 l: k+ l/ B- Y9 e6 \/ r
to do-plots) w8 L0 _- K- K. E
set-current-plot "Trends-of-Local-reputation"2 Y/ z! E0 C  f9 T4 N3 G* m
set-current-plot-pen "Honest service"& R* ~, b7 b7 s, R1 O
end7 J" F( t: k+ B9 w

2 o  U2 y) `; e3 Y' j4 z[ 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.
+ y, C7 ]2 k6 ]) M- H% k
4 ]4 f- d& U3 j* a/ Y. `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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