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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:5 G7 w. s5 `# z
to do-business / T# u7 t8 y" y: a$ K$ b
rt random 3607 d6 t7 J/ |7 N# H! ^
fd 1" F. @6 F% k) W# C: f
ifelse(other turtles-here != nobody)[9 g9 v* V( T; @0 S- A% ^+ i: `5 f  r; r
   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.
- u- S: W, e5 I  S; c9 `   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    " ~! u5 c, k+ U& [$ g/ q+ D) {
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer: s% v9 Q7 ^8 T' k' [+ E( [  a
   set [trade-record-one-len] of self length [trade-record-one] of self
  F. l; r) `) Z   set trade-record-current( list (timer) (random money-upper-limit))
/ g# I" V8 |" H0 Q! g
9 Q5 }8 m7 ?) N% z问题的提示如下:
0 L# _7 L" h/ d( y( _. \# K- d; w! B% M1 W- ^+ S. o& `& ?* l
error while turtle 50 running OF in procedure DO-BUSINESS
0 O6 _3 v1 J* p4 j$ R4 D4 O  called by procedure GO
' m* I2 o/ m7 ]2 j$ cOF expected input to be a turtle agentset or turtle but got NOBODY instead.
3 Q* |/ w4 r) f1 g" e) ~
(halted running of go)& I# v7 N9 b( m. [% X- [5 T

0 K- @! m2 g0 o4 e" x1 ~$ s9 e& f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~~  x' B) `4 I1 I* D* O: q
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" C% X+ H- K+ A  @9 h) p: B* g
globals[$ y( L% {0 |: D; k; \0 ]
xmax
  s$ a% C  B1 {" x8 dymax1 U4 N+ b* w( n7 z
global-reputation-list' Z, W( h* z" v
  ?7 V; V* J0 @; K7 A
;;
每一个turtle的全局声誉都存在此LIST
9 ]3 z9 i; _7 @; i5 M' ~8 Tcredibility-list
/ ^2 ?, U5 H; R# T0 p;;
每一个turtle的评价可信度
' G) H& R+ \  T9 Z4 E) M$ J1 uhonest-service* p& _* P' I7 T" U4 S
unhonest-service
5 `) l. G+ b6 _, k' aoscillation
( |" A$ W, {8 Y$ l2 X7 V1 lrand-dynamic, B- q4 l5 u9 j& p$ i
]
! q" ~! x8 u' l+ N: Z  J" z9 B9 W  z3 p6 |, J2 @& G
turtles-own[
* @4 }3 H; m* C$ Ytrade-record-all
+ j6 Y8 d1 ?- W" K9 H;;a list of lists,
trade-record-one组成: v0 e0 K1 Y5 P, J+ s
trade-record-one
1 G1 A. h- q, M9 q; X;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
( \) j) e0 X1 W4 P, N! z, \8 M. a- G8 n
;;[
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]]
4 c- V% h4 O) ttrade-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]
, U6 e& d6 c$ u& ccredibility-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# U' Q" k+ f* L0 x; l
neighbor-total# C7 `2 X4 l1 `2 r
;;
记录该turtle的邻居节点的数目
6 ?& D, G4 f" A$ H( Btrade-time" L+ T* e" c: U6 C
;;
当前发生交易的turtle的交易时间  V; R) Y3 O* y* r
appraise-give
" y; K8 E* l' N+ R% u3 \;;
当前发生交易时给出的评价
) g& I# d' k# C$ k+ fappraise-receive$ J  [( x* y  x) e2 F
;;
当前发生交易时收到的评价3 I6 c" u) z- }. b# j
appraise-time
: o8 }9 y( c* Y3 ~8 S;;
当前发生交易时的评价时间8 W1 f) k# \* E4 A: v2 b
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
7 _  F3 w) ~" B  f3 ltrade-times-total
2 W' A$ S2 f0 r  c; W3 _( ~;;
与当前turtle的交易总次数
3 G: U, \6 W4 V1 Z) E+ Qtrade-money-total8 X! @+ P- _4 Y) Q  O
;;
与当前turtle的交易总金额! C0 ~4 d, q6 n
local-reputation
* W: ]0 B1 k$ I& K7 eglobal-reputation) w" L0 h6 @( k
credibility
7 a8 l9 Y7 m9 i0 O! r+ S- R;;
评价可信度,每次交易后都需要更新  G" G( H6 f% c, o4 r" h
credibility-all
: {' N4 p. l2 l0 N3 G;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据
# ?  I& N! r+ E8 K8 n
% o; t6 L' ]- ?3 R- ];;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% A6 b& ~9 g& E/ N7 r4 p  S
credibility-one
/ q& V) y* D0 \2 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
2 t9 P- S& g& lglobal-proportion
- T; Z7 O9 Q; |' ^customer( o3 U7 U3 y$ D$ g
customer-no2 G4 V0 [5 O& k: p- p* l- v; W5 A
trust-ok" s, W- o3 y: s, k4 d/ x- K* s
trade-record-one-len;;trade-record-one的长度( ~, h" E- p+ S
]
; i; v) p3 ?( g2 W# f" G( Z2 t2 j) w8 }6 h& U9 u2 v
;;setup procedure
: v& k7 |8 n# m6 a) Z% C& S  Q' n
6 X. g7 n# l  wto setup
- J  h$ }" ?9 ?# `- x6 U( V6 A1 Y. y7 V$ g+ n8 T0 x. {4 y
ca
4 ]& m" H8 q/ r+ I& E/ _
& K" \- s2 T* `7 y% a& U: B9 }
initialize-settings
! I; O; |2 E  U* W/ V' h

6 ]# I. z6 ]! k/ |& kcrt people [setup-turtles]
! }2 {/ i, i9 o& a- N6 x7 A
. [7 s. E6 z" w( ~0 ^8 _
reset-timer

& j- F2 ^0 E2 K' d2 E  _
, P9 [2 ~' A/ x* ^+ @+ r: ]poll-class
. N2 Q* G1 _. X2 |4 A7 O1 A
0 B; ], \. }" I( I4 ^' {
setup-plots

" r- _  Y( V5 a
2 I9 {- x% }/ Q; l4 R/ x9 N$ cdo-plots
% G* t6 o! q$ W1 @; E- b& O
end* X/ Y$ n" S- v' i& `3 ]

. q  l% R* {% U; `/ zto initialize-settings
( t1 t9 P+ d' w) f% {
% {+ b2 D% u1 m$ Q$ |set global-reputation-list []

) O3 T; O( }. q" ?/ a3 B5 ~+ O9 e! D6 E7 }* g+ e# R6 \
set credibility-list n-values people [0.5]

" w  V* ^; Q" a5 w: P1 z! H  D* j, R  ]+ m) J0 o8 l; V( }5 Z
set honest-service 0

' X" l6 [' Q( ?% a6 j8 P3 Q/ ~  P! b0 k
set unhonest-service 0
. Q# V$ R9 p; U

- `1 M4 V* ?2 p' S4 ?1 ?set oscillation 0

1 y% E0 G* k+ R! S8 I: \0 @6 I1 O8 G% }
set rand-dynamic 0

* W$ ?0 f3 }/ Wend
) Q, Z+ f" ^" z% @5 j3 |% s5 \8 y2 |
to setup-turtles
4 _: G7 M; A6 |1 R! S( n- N6 H) S* Lset shape "person"
, W2 R& k& O7 k. bsetxy random-xcor random-ycor+ H2 R; _8 L* m0 p$ f: D3 ?; O- M
set trade-record-one []
) T- V0 J1 K* T7 P, @

$ b9 b) \$ o0 `& y. eset trade-record-all n-values people [(list (? + 1) 0 0)]
, c4 Y$ n: b8 w% z8 y' E" Z8 e

$ a  [& T- e4 g/ M' h+ eset trade-record-current []
4 b5 ]3 F3 K! s6 e. Jset credibility-receive []+ a7 f3 J5 i8 e9 ?; Q
set local-reputation 0.5
) k( A% X: U4 oset neighbor-total 0
% S3 \1 h: e. Mset trade-times-total 05 D( F  l* M, ^8 z5 x
set trade-money-total 0
0 B' m& Y2 q" D- z4 e! H1 x2 }set customer nobody
4 Q5 a$ D- }4 g6 }set credibility-all n-values people [creat-credibility]
" g) T: t  y% uset credibility n-values people [-1]
* @* X) m3 M" j/ {/ jget-color" K. \* \- W7 m/ P+ `; M4 W$ a% Y

9 Q, u" S3 W. _3 _9 Y) V9 fend, S0 J1 O; f! c9 `$ Q5 h8 t2 J3 F
; M( D" y0 w) y: \2 D5 a
to-report creat-credibility4 D2 m) j1 G; A5 v5 n
report n-values people [0.5]* i5 S% y: O" c6 S, m
end2 }  g$ ~0 h% p2 e

  r* P+ [0 O! N4 Y6 y1 _2 o) |to setup-plots0 ^9 r. r8 @! V  \

% q( y9 c1 a2 F- nset xmax 30
; U- X0 a5 U9 J! b% I3 I" }

/ s. j$ c5 k- u* Hset ymax 1.0

& C. u" A9 M* }; N
1 l& x3 z& u* S! O5 ?( n9 eclear-all-plots
& a# U% ^" ]; h+ i2 l- G
1 z6 n. C6 u% w6 |3 n& ?- g6 W$ i
setup-plot1

' T- z! ?9 y, N" f$ |6 [$ w# n0 u8 m) W$ M, ~
setup-plot2
; ^5 a2 T4 \. m
# H' G' U+ Y, j1 ^% P( L2 P
setup-plot3

3 t0 m( Y  q+ C7 l2 Aend) ~; K/ K  ~) O! A/ ?- f0 w
" _% k' k3 W# y8 T
;;run time procedures
5 ~* K( P; M$ l0 n/ a. Y+ _1 ]. P- a" s- R
to go7 N' w, d2 f# o7 E1 z
7 B5 t" \& e, y7 \5 D2 c1 W
ask turtles [do-business]

5 V+ `, l# ]( O, k6 u6 eend
! T' O/ e) h4 n! c& J! _
( _3 D& M& x7 M1 U+ ~to do-business : j$ B( W% y; n4 _
6 J' @* O, J, x, _  O

& v0 _$ C4 @  p/ E$ ?7 c/ \' Wrt random 360
5 Q9 r  Q: V5 m' @

  W) H) x) Y5 O- d1 b$ ~fd 1
; b8 M0 t# d1 C2 f# V% G" `/ I' H

7 ^: O( q4 @6 [, E1 a: I5 T" g$ Zifelse(other turtles-here != nobody)[

9 i6 f' _5 |6 z9 V: ^" {
7 h: i* h1 V6 U9 I; @set customer one-of other turtles-here
) n# R, p8 F& x& T$ g3 H! @  U1 W

4 F- x: i$ Y4 i. I: d) n, i;; set [customer] of customer myself
; w% @0 w1 K8 k3 h: v. F
  P9 g0 ]6 m5 n, {0 H
set [trade-record-one] of self item (([who] of customer) - 1)- _" K; E5 v3 a) }" W
[trade-record-all]of self' J% ?/ Q% x  P% h# E8 o
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

( z3 _8 K* v2 D- c
! |( z  O( e1 u* Cset [trade-record-one] of customer item (([who] of self) - 1)
# B7 w; S: d0 x8 `! t[trade-record-all]of customer
# k$ Z% d# g6 m& Q: r
2 n& L$ `5 J3 V( X. Q1 z# N6 }
set [trade-record-one-len] of self length [trade-record-one] of self

: b# Q! {8 W4 R9 C6 D) |
6 J3 ]) ?3 {/ ~% D; C$ gset trade-record-current( list (timer) (random money-upper-limit))

- ~$ V% i, v/ {$ I7 \9 N/ E/ X- p& r, {- K( w
ask self [do-trust]
4 h& J7 H1 R8 H% q# q4 A0 m;;
先求ij的信任度2 b( ^! i+ T' [

* q! K( m9 _7 c& ]* k. L* }if ([trust-ok] of self)
/ ~* K) e7 X  ~+ T& D  I7 J. T;;
根据ij的信任度来决定是否与j进行交易[
6 U. ?' E5 y! A5 H' H) xask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
0 L5 \( B3 O% f3 G8 l; z- p, F& E0 Y* t* \& Q: J+ q3 t
[

2 |( [- ?0 M, V% }5 p$ E8 D( o( p
6 Y/ ^4 I( e; Kdo-trade
5 }4 O( a& s6 e7 l# T
5 w! ?% a5 h+ n. o3 t
update-credibility-ijl

1 a8 C4 c) S3 B) e2 P/ l( R$ @% u& ^' f# `
update-credibility-list" M. u) s/ j8 l
! W  N3 o# H0 E5 S, p2 \
, R3 Q* F- k6 D2 N% l" p- v: A
update-global-reputation-list
* A+ P  q+ x7 W0 F! p3 Y- ]

/ a$ m5 x& U! {# Opoll-class
. z4 q- e* r1 g8 K- I+ {8 D# _7 f
. a$ \/ H3 {) [( G" c, }2 i! u
get-color
; B# I) ~( g8 Z: c2 I
! }, F+ u) }. F  `
]]' B- k9 ~, a2 F7 N4 u- P# X# k
0 b' A/ |/ s8 K
;;
如果所得的信任度满足条件,则进行交易
( z( M/ K& v& M. y6 [, G
0 p0 |, J. o1 j3 P[
% \0 T, Q1 A6 H5 J3 t' S

/ a* P! B/ W9 N5 k3 I" y3 Wrt random 360

2 a- ~2 p7 p/ a: u5 j4 B4 i7 X4 O; d* P& }
fd 1

1 M+ C8 G  `- o- |4 y" O) y
5 l& y/ j! Z1 F- Z) r' z3 g3 [( D]
8 z. l' S! o1 b
; H; K  F6 [/ |$ i
end
1 k4 [# Q; s/ r+ S, \
1 V; y: Z5 L9 G6 A1 Q
to do-trust
/ o# H; y: _1 ]- r1 Jset trust-ok False
. U0 q8 R7 r( M4 n
3 `( c: m. Y; P9 n% r" I, v" I$ }
$ U- V4 x. t- W+ f# d) o! c$ j3 R
let max-trade-times 0
9 }% y) D6 C; t7 |foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
+ p. @2 p, [4 [1 K. Y' `/ Ulet max-trade-money 0
8 p- G; E3 f0 [. H2 N( l; ]foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]4 d2 D8 m& A' u6 T( J3 ]7 B
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))# D- }) y/ e" N8 J; S% L

& w4 ]2 ^9 k+ c" S8 `
1 b# |1 q4 @& B* b
get-global-proportion
# p$ d4 c7 k* m, Q# ]let trust-value4 t; I; V# N0 F. u! r) @  J1 Z; m
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)

  a' j1 _. f9 Nif(trust-value > trade-trust-value)
' w# G1 Z" T6 a* z3 C- ?* N[set trust-ok true]1 r. a- r7 M: o5 d5 w
end/ p! J% z4 ~1 d9 W

- h; m1 M( C8 Xto get-global-proportion
) a2 v$ ^; B' Uifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)1 Z0 N5 J: `4 k4 ^- _
[set global-proportion 0]/ A4 e: z( W+ G' \" x. p1 m/ e
[let i 0
) c* X+ u" m& M/ Glet sum-money 0
$ y& L2 X1 {+ V& n: ]) J& p: jwhile[ i < people]/ g8 a+ f' X  _) a  o! i# W
[
# w" B4 @6 J7 M' S6 Rif( length (item i
0 I/ v; v* x+ r! ^[trade-record-all] of customer) > 3 )

7 u* h9 y6 R+ L4 N[$ C: g5 e: |" ?$ G" ?
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
( j6 @+ V- n- U9 y]
$ _" d1 K: x' `9 o! M! F) l7 i]2 q) V3 t, q; |: c: S3 P+ I
let j 0
* @. B% r; U3 t+ q  J0 Blet note 0
4 N* U+ h6 V$ T! r# [while[ j < people]1 O. G$ z4 R; Z. ?" ~$ w9 X
[6 x) m, s& U9 q& J2 R
if( length (item i, M$ C2 }) f) q# a
[trade-record-all] of customer) > 3 )
7 @* C) D2 M. |4 \& c, k- p
[  v" q5 W) p  y9 F& I6 E' N+ n7 O& e
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1), w5 Z9 Q# m- R
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]$ u2 |4 F1 t6 e1 m
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]! B0 {: t% g( R% @
]
9 L* }/ Y0 ^$ X7 f+ G* w]
  b; W# `$ A4 `( P$ Yset global-proportion note
, U6 |  D' R! e# @3 i" S]" O; s6 B( C4 k8 Z3 E
end5 \1 m9 d8 [' E: X% x
" a) d/ Z- s3 c8 l* z6 I& m
to do-trade0 G/ x4 F$ l3 L0 q7 o
;;
这个过程实际上是给双方作出评价的过程% T+ l* A6 t1 x% i
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
/ v+ a# A* s, T' ^set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价& t+ T- ?/ y. @2 s0 f3 D5 J! P; T
set trade-record-current lput(timer) trade-record-current- f( `8 `# K- [3 L
;;
评价时间, p2 ]. v# [/ G, R/ E
ask myself [0 I$ g1 A6 g0 l/ }! ^3 h
update-local-reputation
: B2 D5 j7 }6 b8 Mset trade-record-current lput([local-reputation] of myself) trade-record-current
6 D1 S9 {) d( i7 N5 J( ]]" l. q# m# M; Y" H- q
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
6 G, e# H% H2 o  X;;
将此次交易的记录加入到trade-record-one
; l1 w/ Y2 Q5 J. v; v4 Uset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)0 }  A) ~2 K7 c8 M7 c$ P) j! g" P; w
let note (item 2 trade-record-current )
8 u0 G+ X5 n5 V$ Mset trade-record-current
( f0 T# }: P& e% I' |# e* k(replace-item 2 trade-record-current (item 3 trade-record-current))
4 N# P7 g. }) H
set trade-record-current: V1 `$ I$ F2 J# j6 l6 w, M; b
(replace-item 3 trade-record-current note)
/ Z7 I- f' F% _: R* i4 E
9 S3 s; z7 k+ F# R/ |/ V: A
: u7 C( C) x! [: c
ask customer [% R: u$ x7 I. Z# G% x
update-local-reputation8 K! G# n# `( v9 F8 N# I
set trade-record-current
2 \, _3 C- g0 n+ }(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
+ I* X. W% z: X) x6 Z4 i; w
]
5 B" R+ }! T$ ?$ F, L% ^/ J; ^$ K2 Z- b( F/ o' N

" X% s( o& A- C! sset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
: v; ^7 {5 [; x/ J( u7 ~
# f) c! M# y. y  ^2 s
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
1 l; c+ Y& v$ l;;
将此次交易的记录加入到customertrade-record-all
7 ]8 b) U% k. bend: r$ t: V! o! w' U3 E% P
6 ^) a7 g! ?; t( }
to update-local-reputation
8 i  A! s+ t, |% _set [trade-record-one-len] of myself length [trade-record-one] of myself4 P! \8 {* E, z: T9 _

9 m9 b9 ^9 b% D& G0 H0 E. z! q5 @; T" N
;;if [trade-record-one-len] of myself > 3

" p% k3 w3 z, _+ ^: jupdate-neighbor-total( z5 F3 o# W- V4 n0 y8 k
;;
更新邻居节点的数目,在此进行
, b5 o  O. Y# X' D9 Flet i 3
- ]& T- k$ G) k; l5 i. }9 Ulet sum-time 0
, [' e$ n8 c) d2 W- D: L, bwhile[i < [trade-record-one-len] of myself]- k  [8 x) v; k) b2 \
[
* H6 f8 i, v& V1 i' Z: Sset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )! ?6 d" d, o( h' ]: \: Y
set i. q. E: |7 H. n' G- x2 ?, X0 L
( i + 1)

% }; k" O; |: d' R8 c* R- d]' ^7 [- E% p7 G9 G
let j 3
0 {& c+ {( z9 Wlet sum-money 0
. J- H) _1 j7 t9 E2 l5 G/ D6 v! owhile[j < [trade-record-one-len] of myself]
) s/ f& i3 s7 @6 x: u[
+ s4 K4 G- p7 _# @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)
" L, n4 {2 u% p" Tset j4 L! ]; q' S1 j* Z5 Z- u) \- Y( ~+ M
( j + 1)
/ J" r9 D0 f, E. p" K' O+ d
]9 R1 e5 C$ V- s( _5 v. K
let k 3
7 J5 D$ b% o$ ?" {' p7 x( D* n0 _* qlet power 0
2 n9 U1 O4 r, i6 L- Q1 jlet local 0
1 v9 b) \  u: C4 ^, B  \while [k <[trade-record-one-len] of myself]+ E$ S6 j6 |5 Z. b) p3 I5 b
[
+ W$ W$ t5 i- ^4 yset 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)
- P" N+ B% F% j8 R  f$ g" t0 Lset k (k + 1)' A5 o3 w, a% N- b  r) @5 x) C. I
]
* v9 R, k7 L( F0 W0 g9 K; I' l4 j  Zset [local-reputation] of myself (local), F9 ^9 B) \6 h! t* l
end. s) t; r1 F8 U, g. h9 T# r5 m
( a/ N! J, c2 p0 r+ K2 D5 o
to update-neighbor-total* p! ]6 \+ c9 \; ]
/ T4 p1 n) s5 e( {+ [% o. J- R( B
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
9 s; ~  X1 ?, s: h* d
: @/ L% q  s" c! q% E) y. |
% z" ^8 c2 z# h4 [% s
end  R0 Y6 ~4 [+ t6 X
/ a# W+ R" y$ T9 }' G
to update-credibility-ijl
/ U% T7 V6 J7 V/ P( i0 m. l8 z3 K4 `% Z, u; r# z
;;
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。3 Q" ^, P2 T! h$ i2 w/ m
let l 0" v# Y: V0 A. i! i* `
while[ l < people ]9 e, b# a* E. k5 A
;;
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 B; P8 m4 C8 q% k, P
[
% Q8 C5 e* K* p7 y1 O) U: Mlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)3 u- F! |# j: A+ G, _+ F
if (trade-record-one-j-l-len > 3)+ z0 F5 s2 v$ q  C, ^6 [& 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
% E& i8 V0 F) `$ U: F$ qlet i 3
. o  L- W) L/ P' d) Nlet sum-time 0
5 }/ A: t4 n, T3 o2 twhile[i < trade-record-one-len]
2 w5 i+ X7 i* S9 U[
) r. j# B% b6 }6 [set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ), P: V1 [* x+ v  v( }  d1 y
set i
0 R' L! J' v# f4 H1 D0 ]3 ~( i + 1)

* Y+ g0 a) u( V& B( U]
* A5 M7 f( @, r5 P+ jlet credibility-i-j-l 0
6 A" N6 f& U; j# X% ~;;i
评价(jjl的评价)6 J7 H" D! ?7 \! q# O2 R' d, M# f, t
let j 3% H- F' v- g% w& z5 f2 D; Y; d" B
let k 4/ g% N" p7 r" z' H! s/ I
while[j < trade-record-one-len]
8 y  G* O* F2 b' k* t[$ G+ G4 b. q/ M+ ?) n, v) P
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- U5 A. e! e; R( H$ P  H7 h
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)
; W* B: o- I, Vset j7 f* H5 L) F- o4 S2 b
( j + 1)

; ~/ m( a; U+ ?3 y/ ?- I]
* O2 k8 A+ T: l+ }, `4 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 ))6 i5 ?7 k4 w! ?+ |! R

) c  X/ O+ Z6 ?4 z3 }0 X. ^

" S+ U- i$ \7 ]8 Dlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
# q; e9 Z( B1 x5 |- H( };;
及时更新il的评价质量的评价
8 x0 i% s% \5 I+ mset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]9 Q' v& b% n& H! d) `0 c8 M
set l (l + 1)
3 \3 D+ \3 P! b0 Z% J6 M1 ^( p4 N]7 M7 Z9 u8 t0 _# ~2 @4 b: A7 m8 v
end5 l4 u* }  z, X1 g/ h) D$ p: m
8 b/ o: d9 ]0 d4 F" q6 i
to update-credibility-list
! }% x0 J% `& j+ k8 N" Dlet i 0; N8 ^* T' q$ L* i' y5 D- x
while[i < people]
3 V7 L8 E! S% y: Y[& ]. O$ P  b( Y* N
let j 0! \# O- u) F! c! a5 ~
let note 0
* L/ v$ ?1 s% [4 S# Q( q/ rlet k 09 ~( j% l- Z9 v9 C7 q0 P" @
;;
计作出过评价的邻居节点的数目& n3 W+ S# i1 z6 z
while[j < people]
3 K+ C; P9 i4 M7 ^9 ^2 ^- [9 r[
4 A1 S: l8 Q7 w. k) Wif (item j( [credibility] of turtle (i + 1)) != -1)7 p! J7 `; i; I9 {( s8 n
;;
判断是否给本turtle的评价质量做出过评价的节点3 G8 h/ J* L; G/ E( H3 O; I0 x
[set note (note + item j ([credibility]of turtle (i + 1)))9 w. _; X; G9 v  p5 v
;;*(exp (-(people - 2)))/(people - 2))]
: Z) S% {9 m# _! X- p
set k (k + 1)
: z8 d7 z1 H! w( k7 D% T]
# f- {& ]$ r3 P% @" wset j (j + 1)9 L* V5 [8 Z4 a; i% k: i
]! F4 n) s* |4 r. m" k& e
set note (note *(exp (- (1 / k)))/ k)  l$ S" E9 I$ j# c7 n
set credibility-list (replace-item i credibility-list note)8 k& B1 p4 J' z8 T5 k
set i (i + 1): ]' t0 K/ T% U; z% l3 v# a/ o6 Q
]4 T6 r3 e8 k0 v4 O, c
end
% t5 p; @; c1 f- m
8 ?1 v  N5 S% Q& }to update-global-reputation-list  \7 |4 \9 J, k! j0 H$ C) G
let j 03 e4 H$ H: `5 [+ O  C
while[j < people]
7 f7 o$ ?# p8 K2 w; A8 D( w[
3 l9 }' F2 z/ H+ [' I& |; xlet new 0
& r% Y- r: c$ A7 a) I/ E* u; };;
暂存新的一个全局声誉  f7 F: m. k& U
let i 00 g/ b4 W( I& e
let sum-money 0
& Y+ M* [4 A  r" I' o$ v- R: nlet credibility-money 0% Z# {0 N+ O/ L, L+ O& s, q
while [i < people]
: B$ `$ ]* d- E& I[, m% r  k0 x. o8 @) c
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
$ W; o" w4 d, uset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
& i. `' T3 A  K: N1 k/ zset i (i + 1)
; {0 X3 h3 p+ r8 B]
5 ~- n+ B4 p; ~+ t& ^1 |6 m' K, s* jlet k 0, E6 c; ]& v. q0 k7 y3 U
let new1 0  q' B% n: m' u
while [k < people]
  h/ s: c6 y' l% p2 G3 ?1 Z[
- d$ O0 Z* K# K8 p) `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)
: p! c- P6 i$ S. `, L) pset k (k + 1)
/ m7 |  W8 h- s  L/ I4 s]  [+ s" ^+ e6 `+ ^% M
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 8 b/ d8 |6 Q) l* K) g
set global-reputation-list (replace-item j global-reputation-list new)9 L2 }' B/ j7 \0 m8 n0 D$ V+ E  s
set j (j + 1)6 ~# `; C' v6 ]' g6 q& Z( u
]8 h$ ], P) l$ t, ~  Y
end' {, W/ `" d5 q
2 D. n0 a$ C" z3 Y
! g: R- x  R. U6 p2 B5 r

& k- r4 E: T$ @$ M  I" Jto get-color* {5 N0 k& h! I6 |
8 j, m, r0 z$ J
set color blue
6 q5 K+ U, b# k% r8 [: a
end
* w. d+ L$ ^% K4 i! R  l$ ]: [4 K9 ]$ @% j8 G' Y
to poll-class, T+ S, O# F1 P! Z; j! }
end9 A, |. b$ R9 M
& C3 S% E" ?# q9 O! F& z+ D9 o
to setup-plot1: g2 x4 l' m9 j5 G  P) p. g

% e; [' U& U5 ^9 U) p! G% N, uset-current-plot "Trends-of-Local-reputation"
) ?0 j7 n/ W- w% k+ \# S7 M+ |6 m
$ s( N0 D2 H/ V* h% \$ X! y% x
set-plot-x-range 0 xmax

# U) u# n: c+ e( C2 w
$ {2 R) S2 u) ^# G2 [9 V# i8 nset-plot-y-range 0.0 ymax

* Q1 m( ~) ~8 \6 ?' Gend, `* p- ~: x! W5 i; g/ S+ a
7 q  Q0 _) X# H" ], N5 B% N
to setup-plot2
' I# g* i; I1 i+ e
! l" I  E# [/ _, p4 X3 @6 Z0 |% iset-current-plot "Trends-of-global-reputation"

% J7 `5 D# o' ^2 L4 x" n
% d4 {4 F# p/ N6 [0 x' iset-plot-x-range 0 xmax
5 w) S7 {1 i$ }$ H6 Z

+ i: x4 t* d. a, l% n0 bset-plot-y-range 0.0 ymax

: ~1 [  d* [+ M4 qend) Y+ k2 W/ L4 Z. h! U
% x" J4 w& {" \0 Q4 n
to setup-plot31 s) Y2 W* p0 N6 t

9 a/ i) t" G6 U3 S! e: [set-current-plot "Trends-of-credibility"
+ `$ i: |3 v6 T6 T& B- f3 j( N

5 O- ]. Z. z* `: |2 A- \set-plot-x-range 0 xmax
' B) r+ w. `9 C! u

% K+ l* d+ l# O+ I7 b1 Oset-plot-y-range 0.0 ymax
9 _4 {9 f2 e0 o: v8 e0 r& e
end
0 o* [! t. A( t! s5 D) P* q7 r/ a) l3 x$ e8 P
to do-plots
# R( o& ?# z1 o- Q* B8 G6 Tset-current-plot "Trends-of-Local-reputation"
0 ^& `3 E; t7 `: E7 e4 `$ ~set-current-plot-pen "Honest service"
$ A* S# p) X! J. R. H2 O  j! Dend
$ U6 @4 I- ~3 l/ W
: ]' @$ [6 D4 s  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.
* P: I/ x4 f6 f. P; |' o- E/ P8 z$ X/ _- W8 S7 w! P+ m& C% b# L1 W
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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