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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:
) c" D2 ^4 _5 X8 Fto do-business
) J! O6 y) M2 ~ rt random 360
% l4 }9 u$ U7 n5 u fd 1& F' H% _! o" j( a) i8 c  }) X: w
ifelse(other turtles-here != nobody)[3 f- ?, B7 P8 U! O7 e  Y
   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.
. y1 ], R! C2 K. ~   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    # W$ t' u6 D9 i
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer4 o  L9 \0 ~' [5 f
   set [trade-record-one-len] of self length [trade-record-one] of self
+ {( X! j# |( A   set trade-record-current( list (timer) (random money-upper-limit)). g' ?0 S! w" ^  o0 Y# l8 ^/ T
7 Y& T; w  o: ~
问题的提示如下:
2 h7 \1 x% z7 Y3 m# X5 Y$ @& b: p/ G0 r; \
error while turtle 50 running OF in procedure DO-BUSINESS# i0 l: N" t: ^6 Q8 J- b3 P
  called by procedure GO
3 J- L+ v" O! h' G- }4 B) r  rOF expected input to be a turtle agentset or turtle but got NOBODY instead.1 Z, A6 D( y+ u
(halted running of go)
9 }5 Y3 z9 j) |' v9 u# m: I
+ g/ z, R* `9 s9 q2 @# i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~~( W6 t6 Z' f  _3 y3 S
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
* Q( q( T. y0 W$ W2 lglobals[
1 D8 g% z% k5 [" Rxmax
6 ~/ z' t4 x1 ~% M% Nymax
" j7 O( B2 e  ~7 fglobal-reputation-list
: R. F. W, E& y6 t9 ^; q8 w  {% ?5 H1 e. ?! N1 }+ j
;;
每一个turtle的全局声誉都存在此LIST
3 M0 X9 P# ^, p9 P' O3 n* Lcredibility-list/ Q0 R& P8 w  Z& d2 t; C% w! f% O: Q
;;
每一个turtle的评价可信度
9 i. E! r' E5 @6 X9 A) W+ ]honest-service
2 u5 }  m' h5 B8 ~* Cunhonest-service( a1 \, u: H, u7 ~) l+ g4 B& `
oscillation# |/ F: Q7 |& W
rand-dynamic
( v. Q# X4 ]1 j]9 [' U9 M! |( N* A

- G" j3 K" |& Mturtles-own[* s% c5 {% W& N% f) C, x
trade-record-all
. X0 \: Z" {$ b! ]  X$ \) S- k;;a list of lists,
trade-record-one组成  E4 G, W" K& Q! Z
trade-record-one
9 ]8 p- h9 o( S# B# S# 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. T/ d  ^4 N8 |

; R* w) Y- j: j6 b% r1 Y# U;;[
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]]
' g6 r7 \$ \' z& b0 L- E" {; q, L# ytrade-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]
2 R6 z* r7 D( \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
& A" ]! i' }* x( Qneighbor-total
" m& Y% @* x% ?* r;;
记录该turtle的邻居节点的数目3 L& v  M! S$ Y) s
trade-time
" v9 K  |3 m8 w* I5 s;;
当前发生交易的turtle的交易时间
2 J% F$ A9 i0 l# J2 M" Jappraise-give
  R- Q- {! d1 |* o# v2 ~;;
当前发生交易时给出的评价
( r! q& y" k7 K4 bappraise-receive
7 V6 X! L9 h. U+ ]7 E6 d;;
当前发生交易时收到的评价
) }$ @: V1 L. ?3 Vappraise-time
5 I3 f9 U/ b8 d/ z;;
当前发生交易时的评价时间, E: [. ]. d1 }2 I' T
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
) H+ D, [$ V* s* `( Q: _" Strade-times-total
% n# Q' v0 o9 M$ e;;
与当前turtle的交易总次数5 |# H, ^$ ~8 ~+ Y
trade-money-total( h* }) S# P1 E' D$ V
;;
与当前turtle的交易总金额
+ B# u- w& u1 B" p' T1 {- U- Rlocal-reputation
& X& ]0 t! N" `* @1 Tglobal-reputation3 Z; D, B' g& V! h; ?
credibility
8 l- f* C& j8 |' R7 H- q;;
评价可信度,每次交易后都需要更新) Q% Z+ x( ^% U$ n2 b, T9 ^
credibility-all4 W3 ~! X8 l: C: B& B9 C8 }
;;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. M- I0 R. z7 D4 F6 n
) }2 a9 f- H6 d( h1 L5 j8 _: U1 z
;;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
6 n: Y/ N' c: H. ]% D: J1 ucredibility-one; X% j" s- [8 x* {2 C6 E" h4 I
;;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 E( D8 M7 K( X- K
global-proportion8 ^# o3 j/ H7 }3 a. V/ p/ \
customer
3 l9 q5 s4 ]. I% d7 O' hcustomer-no- z# O$ V! F7 b* C
trust-ok
- n4 R  J8 S7 r* Ptrade-record-one-len;;trade-record-one的长度
2 o, K  b1 g6 W3 p' r7 w. p], v- m' `3 `+ b, J6 M; ?
* M) u* A  R7 ?: o1 Z- Q
;;setup procedure+ L6 W6 u0 M# |  R$ O5 l
6 P# l: u3 G2 O7 C
to setup/ S' q" C7 B6 ^- _

4 q+ k4 @! S, [$ k' g. ^2 n0 oca

3 B. F! x$ c1 ]0 Z+ W+ Z( k9 m. p5 {/ u8 \
initialize-settings
5 X0 S0 p* W" |) p& X# N; o# @
1 m0 u& N: {- a5 K# B  g! h7 [
crt people [setup-turtles]

! f1 s1 V0 |) Y% C8 G% ~4 d0 o
6 v! j1 D+ v9 @& x! ^reset-timer

' C- Z  q* F/ i# F9 k" I4 j5 h* s( u
poll-class
: K4 K1 z5 ]: V, ~
. o! I, o# a- l0 l
setup-plots

4 U  y7 r# u- k% \$ C8 K
$ h8 t0 t$ q6 f' a; S( g  X! S: ]; mdo-plots

8 D4 U1 Z1 J+ b1 l$ Iend
* q3 s: H; i2 z. `0 t0 |9 n# o2 l; G# ], h9 B) y+ y
to initialize-settings, O2 M8 u: v! j# B+ f

9 k# m  P5 h5 n, h8 u1 s' D, m# yset global-reputation-list []

  ^& x$ ]( r& ^" `0 {+ l- `& m* j/ |8 Y2 a
set credibility-list n-values people [0.5]
0 [5 ^7 X0 g8 J
* R9 r& l! J" X# F. x
set honest-service 0
% Z: k% [! y. m0 I# O, E7 y1 |
) j" d% s' R( O; c  _$ l& l8 H
set unhonest-service 0
2 h1 e# s4 [2 _1 S
( h4 l( m' Z" s' B0 G, I9 O  y5 p& T
set oscillation 0

' {$ O; k. N6 T2 I, o9 x) C9 u+ b6 n  O3 b6 ^
set rand-dynamic 0

2 L* a& j. Y0 O5 S! K# u. Vend
6 {! ?, Z) K: v9 M+ o' |2 ~8 M; k: H4 P# O
to setup-turtles
; W( j' m, n) R2 i2 q# \, Zset shape "person"
2 P4 l8 ~7 b' H# [: Q6 Csetxy random-xcor random-ycor% ^& z( r/ ~7 D2 h0 `8 u- Q
set trade-record-one []
) H4 B; ]% E0 F6 H
6 x9 c  j3 j7 R) S( K+ `* L7 J
set trade-record-all n-values people [(list (? + 1) 0 0)]
4 V6 N# p: T/ B/ Z, a. B

6 K! m' F, ^! {3 V& m) B$ @0 o( Jset trade-record-current []$ K! P" p2 L# F+ C5 r$ c  K1 t
set credibility-receive []
0 o) V+ W0 G5 m# v+ T; |set local-reputation 0.5
. n* _! h( w0 zset neighbor-total 0
* E5 S+ E' @. U! h  ?set trade-times-total 02 ~1 ?; s. g, I( K$ O
set trade-money-total 0
7 x7 E; P% B! n# ]! yset customer nobody
. q9 L/ l$ u$ H" E$ l- Xset credibility-all n-values people [creat-credibility]8 Y6 c5 N, Q: M8 Z( m, r3 X
set credibility n-values people [-1]
0 _3 {& S' Q( v# a: B- [get-color
2 J' B9 l" ^: e

& t' h0 X8 N! M3 N, ~/ Kend
5 X+ d! {+ n- Q0 S1 g. R
% a3 }' _+ K: `4 [" y6 L4 ?# Rto-report creat-credibility
$ X/ B8 y0 U! |/ q  ^report n-values people [0.5]5 s. y1 U& h! G
end
8 p9 D- ]) r9 k/ X% g2 @) x2 m' ]: ]# ?9 L  O: u7 E: l
to setup-plots  K) [) I5 x9 s+ {8 y3 k

; u% @7 y8 X) U" I6 Lset xmax 30
$ J+ q5 b! E/ d5 x

; J0 W& C* T" F/ W+ c, p& W! r& lset ymax 1.0
2 S3 X2 U( y) I( u9 a3 o7 ^
+ q5 L4 N5 F( g. R8 t
clear-all-plots

+ p* A* j% [5 `+ i' A" `" h& E1 _/ {2 M
setup-plot1

  M6 y/ a" Y. V$ Q$ ~8 C9 W4 D$ i7 x+ f
setup-plot2

7 i# N/ ?! @% J  }# i$ c) s! V+ s' M+ E" E
setup-plot3

$ p+ @2 S4 B* M! wend8 y$ Y6 C( w# L6 U/ }# |/ e: X
+ f9 m$ g3 q$ J5 w! u1 t
;;run time procedures
8 @- p: ?- [- w- ~# W. a9 h6 P0 p) p/ ^$ C2 y
to go3 T6 v+ k+ w, s4 R& P0 y

9 P8 t7 K1 s- x) h& T1 u# q9 Z# Eask turtles [do-business]
  I1 G1 t/ P; v+ e2 C) y9 u; u
end
  C4 S- b: @5 R8 R% ?+ A4 R8 e6 D9 U  F2 [
to do-business 0 j+ v7 l7 k/ d

9 J1 H' \9 G/ F/ V% a( s7 v
9 c( ~, W6 a- w& |! X8 @( Rrt random 360

- M& M2 H) |6 Q
4 C2 y/ x2 _1 r: ]$ j- j: kfd 1
4 j# G+ A2 o; {( L6 u% P+ j

$ V& _; [$ x+ I5 F+ [2 a, m0 z3 oifelse(other turtles-here != nobody)[
9 ~- j! p3 v3 I
; J. d: w0 d0 P; S7 u, j
set customer one-of other turtles-here
* L1 \) T& H7 y: Z, J0 o# O* E
4 j1 |$ B2 N% |( z
;; set [customer] of customer myself
4 I7 p, m% f# z" [/ t, |

! S( q1 W3 I# L/ t/ I% `set [trade-record-one] of self item (([who] of customer) - 1)
4 I9 j2 _1 o$ p! O# O  W[trade-record-all]of self4 N7 J  r- \- g0 s% ~
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

9 U$ m% x4 R8 S6 \& \
6 T' }( @( r/ M: M+ a  W' bset [trade-record-one] of customer item (([who] of self) - 1)
$ \2 v# B) v0 \6 K& N7 n  q[trade-record-all]of customer
5 W4 `0 x5 `5 C* @0 Y9 }1 R
9 a, K0 U7 U( T0 i3 o  v1 |9 ?6 o
set [trade-record-one-len] of self length [trade-record-one] of self

) j) X/ X) h. l! x) u: ?- L0 ]( R+ Y; o
set trade-record-current( list (timer) (random money-upper-limit))

  x* ]0 i0 {( `% k- z0 ]& ]5 d1 P- e
) t6 o0 E" R% E& Y6 vask self [do-trust]
+ i' _3 D. l9 R) u7 _;;
先求ij的信任度2 i3 t% [- \! O8 m# k; R5 A/ P, J

5 L3 m/ e6 v  K3 x% p, dif ([trust-ok] of self)
# V, b$ R$ b+ K6 I  p8 p: C6 Z;;
根据ij的信任度来决定是否与j进行交易[# O% \# A1 u9 h/ D) T2 j
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself0 i" ^6 X; e+ E1 \
2 x$ E; b  V3 _2 y3 [6 \
[
! ~5 M7 e' h2 Y1 F' u/ E

* b- _+ K* _  |/ gdo-trade

+ w, C& S; l5 m8 h" b
5 i5 \( D& j" ?update-credibility-ijl
. g* y0 W& q. u4 H9 L

2 z# d' O0 s1 U3 j- Lupdate-credibility-list" `# ~8 a7 \( y# Q, {- R" B
" v, K0 `8 I1 _; U6 r, ^( O

8 V! @7 [) R. R9 F9 X6 Y5 R9 Nupdate-global-reputation-list
: U0 X( }3 d0 t# I# }
- C3 R0 Z; d0 K  }0 @/ N
poll-class

; H* k* F" r; C5 I
( U& u( p4 C0 O( U5 Uget-color
* ~% _& X4 Z% a" k# q

3 D7 Q2 C$ |5 ^+ `7 X( F" T# O* U]]/ e$ d/ [8 m+ m* i9 z

, I; {4 B$ }8 H/ y% s0 F;;
如果所得的信任度满足条件,则进行交易
* l6 Z: ~/ d% W  \- d- G6 k9 h: e9 c- }
[
& F9 J2 B8 x+ ~1 ^/ Y$ g
( y7 g8 A) M- N4 g
rt random 360
/ H" `( g2 L  t3 T4 m- g) q& f
6 H' m6 F9 }5 M1 \7 `& s0 d/ a
fd 1
0 x9 O' c, {2 v0 \/ R
8 s& v8 m- C9 Y7 [" n
]

; v; e: N' Y/ V- W' @5 I; \/ {
% n' ?7 }) ]& Aend
: a9 c3 X( s# K, H3 T

1 ]7 Q  a) x5 U2 t) s; Tto do-trust . R' [7 G% G4 ~, U: j  t
set trust-ok False
1 H: C3 T& N5 O7 ^" u* \0 @7 r( @* F) ^4 F

/ {" Q& V; |8 }: m' k" ?- Zlet max-trade-times 0
, J0 }' o$ U/ a8 w2 Pforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]- z2 L+ }* {' Z4 d8 l* m( I# Z
let max-trade-money 0- r# f6 G" ~$ E6 M( s6 }+ O  l
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]2 }# Y7 a* @/ o
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))* O3 |7 }) S2 R# R: p* L
8 U& s) ^6 e( D) D

/ l% ~9 H, v" r! vget-global-proportion
- H: c7 P+ n! V& clet trust-value0 g: R4 X" b; s/ Y4 b1 l+ k: F
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)
" J7 Z/ |  S2 `# w
if(trust-value > trade-trust-value)( W- S1 A- f# z, h: _+ j, I9 ?# _
[set trust-ok true]
& Z, l. c5 Y' [3 tend* A! J/ w  v8 E9 k4 m) H
9 M( w( d+ v3 C( y) e% F7 Z
to get-global-proportion
1 w/ D' Y, {5 h5 S# i3 gifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
0 Y* M- h0 ^, N# R[set global-proportion 0]
% n, P+ N: _0 r  [  v/ W- ]4 t[let i 0
8 ?0 p( k5 D* {5 i! Jlet sum-money 0
, K+ E( ~" n- d/ ?! O9 f& Kwhile[ i < people]
7 R* m" f5 U* u/ e7 v+ J( u[
: Y3 t9 J0 a1 D" @2 ^- N+ r" Y0 yif( length (item i
: G1 U, k: `+ `, I/ p6 m& ^# j[trade-record-all] of customer) > 3 )

+ S& t- o- F+ ?. W  _  p[
) W. G& \( D! q5 ?1 l( \$ Lset sum-money (sum-money + item 2(item i [trade-record-all] of myself))% L$ U8 M# u8 S& A: d0 }3 ?  T
]: H: Z; m6 J6 g% D+ h$ o
]
" Q6 l7 J* u' t$ Y, @  C& Xlet j 0& H' @% I0 n3 t
let note 0
0 a1 Q( j8 A5 C  h; v8 J( Wwhile[ j < people]
5 {+ }4 l$ M3 u7 [# w; p& E[# [8 X8 e# g/ j3 i* ]1 U6 v' a" B
if( length (item i2 w% q( a. h. \$ X5 q
[trade-record-all] of customer) > 3 )

+ f7 Z% u, S. ?[
# l5 j/ T" t! g7 \9 Cifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)' x5 W( d1 w4 G% z5 n9 @' y* Z
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
4 }, j: W) }* B. L1 X9 K[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
' L% B8 O! q- q2 j]* B9 G7 J3 H- C3 K3 P
]
7 |! S6 I+ z+ Rset global-proportion note7 D5 L* t) ]! |, C% H- P
]/ M! e. m; X- G1 ~! ?5 N
end- r: `1 U8 W! r
- C* K/ j; O9 K% R! w$ Q
to do-trade$ {4 \9 e1 ]# z  |* o8 ~2 Z
;;
这个过程实际上是给双方作出评价的过程
5 B& o+ A5 I- @9 n: x# fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
. S7 E  |$ r& _! k1 y" {6 eset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价2 [7 {5 d2 v* D7 J- u$ u1 B
set trade-record-current lput(timer) trade-record-current
0 t. @; o( m1 a, a- A$ \* {& N;;
评价时间
2 w$ B0 m( b; j, E$ kask myself [# L$ W1 J4 e% R. T% p7 b! h0 p
update-local-reputation0 o* _5 T; b3 E6 Y& Y# l1 B0 P# M
set trade-record-current lput([local-reputation] of myself) trade-record-current
) u! X& c6 x9 S% T3 t. X" @]
7 M5 M/ O! }$ i5 dset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself) z8 r' }2 i; Z; W; Q" O- A# f
;;
将此次交易的记录加入到trade-record-one# _, V7 q4 o/ K
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)" T" T) \" j6 r" D
let note (item 2 trade-record-current )5 n" |, a2 \$ b1 Z! g! P- p0 N
set trade-record-current
' u0 Q5 R; r5 ], y6 B# }' b(replace-item 2 trade-record-current (item 3 trade-record-current))

8 b/ D8 n6 O# ?- M, Lset trade-record-current+ l6 H6 a8 B5 u& f+ G. M2 P
(replace-item 3 trade-record-current note)
: _1 }9 c9 V& o/ X8 x# z9 ?
( Q5 h5 T, Z" U. }! l, E0 j* R' Q

5 |2 V  y3 |' h' _4 c6 x: O9 Pask customer [
. O+ y5 G2 d1 S0 {update-local-reputation
* v, R$ t  l/ G& Gset trade-record-current. E$ w" m( G8 W: Z' l  [
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

4 ^3 f4 ?3 J0 K, @]" i& [, Q9 B' \  j
" M" S1 B! c8 f" F+ P
# i5 d: q* B! |: v5 Y
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer; R% w' ~% j' R& G, W/ i

/ S. u; d  R" k0 B% ?8 Mset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
9 t" d9 O, o; s: W7 T;;
将此次交易的记录加入到customertrade-record-all7 O3 W+ @( L8 Y9 B1 S
end
0 A% }- j) n. Q4 R' E/ ?" T% r6 O4 w0 r
to update-local-reputation
# p% T/ @  \0 o7 B- i6 _set [trade-record-one-len] of myself length [trade-record-one] of myself1 F0 S; P, U) s/ H- h/ r
/ @7 l! a& K' k9 Q/ x

: V0 r$ ]/ s: u0 ]! H' e+ N;;if [trade-record-one-len] of myself > 3
! D# `9 |" d; P0 x" X
update-neighbor-total
/ M, S4 c9 b  C9 P; c5 H;;
更新邻居节点的数目,在此进行: g' `+ \- ?# P' ^$ n  b
let i 30 Z8 D1 p: Y( X( R" s
let sum-time 0
5 _  s- Y$ R7 \while[i < [trade-record-one-len] of myself]$ v8 v- a6 {0 a. v5 ]* H: o
[
2 {: B, x1 y% A9 I' B; Jset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )/ P0 N( p' e4 m8 e$ y
set i
, ^: G  G% w: Z" a& d# D2 Y( i + 1)

1 r+ f( u0 C) A/ M]
( R5 W7 r, F0 ?4 R" J/ Elet j 3! u9 j) B& V% |* H# o+ ]0 G. R9 l
let sum-money 0
- ?6 c7 X# X. ]  R6 X3 {0 H" owhile[j < [trade-record-one-len] of myself]* E& b* {; G1 C  S4 E' I" N& j* J$ F: M
[
3 K2 S/ `7 C# @2 X4 |' L* Hset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)9 D: K+ J1 z+ ]( s+ B
set j/ Z. Q6 \( D3 l9 j. ?
( j + 1)

0 H3 K0 r5 k* c' d7 x0 S4 v+ w2 {]- q) O6 u+ d7 A8 c; e
let k 3
  U4 N0 m# R) }$ p$ j( Xlet power 0
0 x- F" F( _  I0 H9 Hlet local 0* H3 V1 @2 J0 T" m2 C0 ?
while [k <[trade-record-one-len] of myself]9 T" D4 ^$ R8 ~# @6 X  P
[, L6 [% C0 G$ \# Q& E  u6 N& f1 @
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)
6 o! t, G& J, j' p8 K- j# n  r: bset k (k + 1)
# l) A9 y) _  D7 D]' r) M- x7 F% o7 C2 A. N5 T
set [local-reputation] of myself (local)
' C8 H8 }1 f+ [) Z, q! _! U' _% O1 |end
! P( E; `9 @0 ^$ |! Z/ d7 q
1 `% F+ l4 c: I% B& X& P, j/ @, C  ?! h# Tto update-neighbor-total
. P; f9 H  O) I2 \# l7 @! u+ v' v. B5 Q1 F8 f
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]  @# f% N& |- ?9 I
5 Z7 c3 n) X9 G% T
5 H( n$ O; x* B
end8 g0 m5 g8 P' J9 U# c& G  V

4 W6 ?% V# t, _4 Q- C# N! ?to update-credibility-ijl 6 }5 f: J  t! j- q* t5 X

- j. P, C* B1 f/ v4 N$ D: o; i;;
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。
+ o6 T. h* p" z! G; slet l 07 d/ Q/ _: w# V( |- M+ P! q( N( [
while[ l < people ]
, ~% r  K; ]! a- {, @2 J;;
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
$ _/ y' Y* K+ S; |* n[* p7 Y9 p: k" ^3 Y8 c
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
; R1 F8 k  K! T+ C7 F7 J' a2 qif (trade-record-one-j-l-len > 3)
2 M* E8 y$ {# p: [# D! z7 ^9 o[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$ C; {# b& e5 f9 X6 u1 J
let i 3
, K1 Q5 f3 Z6 y" \3 Ilet sum-time 0+ H5 l/ }. D2 e" _9 ^3 n) N
while[i < trade-record-one-len]
) a# @7 h9 h% {) M: U# e& H[
' v& k/ w; S( Q* V$ f& Lset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )7 D7 y6 Z0 m, j+ \5 C3 k$ D# W
set i
% ?. V- z3 i/ r9 H- T5 S( i + 1)

1 Z7 M* ?' A+ P* j% I5 `8 ^]9 A, L2 [, k8 b4 W0 u9 `7 f
let credibility-i-j-l 04 L* f& B$ e! B0 J, P& ~/ ~& t
;;i
评价(jjl的评价)
. S! U1 X4 C7 U) t: B8 Clet j 3
6 W& d, {1 P1 r+ S( b( ulet k 4
4 p) ~6 f& F1 I# ^# o6 h2 _9 _% jwhile[j < trade-record-one-len]& q+ y( p2 L, X3 j4 C/ l
[
& r/ U& Y/ k( y& g. @$ h" Wwhile [((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 P6 U, S/ p* V  ]2 G! m
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)2 a+ U; B5 P) U; R+ |* o
set j
3 i2 r( R" a+ L9 ^& f; D7 n. ~( c6 T( j + 1)
' `# f0 [8 G: y/ f; T, w
]8 Y" H" `- U( B9 o7 M7 X8 U! V1 A
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 ))" O; j+ C3 h. Z

, l) N' A% e5 [' M4 w+ r* V

& c* P7 o- U8 Z& W9 U& h; Wlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
, ^5 c6 m. E6 i; b8 C0 U;;
及时更新il的评价质量的评价
6 W! L* p' @6 X5 Vset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]' u, P8 e+ D. j3 _
set l (l + 1)
) b/ l) T4 C& x! w( _]
% X  e0 j3 r6 qend
6 O5 u+ y/ I1 e( O% t7 P0 K7 P% \5 v/ D
to update-credibility-list8 W$ V% o0 {( v" h8 J. b4 X
let i 0$ p9 B. L" x4 E  m( T, g
while[i < people]
9 c, j) R/ M  `( S' Y[# w$ [# R& m* J( W3 c
let j 0
. I9 `& Q1 V( Z( E# `let note 0
1 G& F. o. o% z) x: D# qlet k 0
$ _  ]4 i/ w+ U; o+ w;;
计作出过评价的邻居节点的数目/ [$ J; `7 G. m) r
while[j < people]
! ]2 x# y4 U  ~9 a5 T& F* u[, }: ?- }0 u' I8 }6 }. x% }% ]7 j
if (item j( [credibility] of turtle (i + 1)) != -1)
9 n1 _9 z: A  O;;
判断是否给本turtle的评价质量做出过评价的节点
# ]' Q* a' j$ k! w: w[set note (note + item j ([credibility]of turtle (i + 1)))( j6 d! n! H3 `9 b4 a
;;*(exp (-(people - 2)))/(people - 2))]

. \( V6 L9 I) P) p: }set k (k + 1)
9 w& |- B, E& q0 U5 b]: {* [* M) H' ^4 T% @* }2 \
set j (j + 1)/ ~3 J5 z$ p" e( E. K
]0 ]4 Q* O# \2 E5 c- A7 C
set note (note *(exp (- (1 / k)))/ k)
6 Y# v' K* k& ^8 x& {set credibility-list (replace-item i credibility-list note)& t7 q7 L; I" y/ v; E( F- T
set i (i + 1)7 z& G5 R- M  h, [% l7 y
]' p+ q  j! J7 I9 p& G
end0 ]. b& g# v* a$ u

: l  R( o* P* Q. Jto update-global-reputation-list" s# |; ~) l; D7 M1 B+ k, D0 C
let j 0
. f" u0 _( Q1 a# E, o9 t3 c" Xwhile[j < people]! r; Z# k  O( L. h4 A" {; }
[+ N0 x5 n. R9 ?! f* i7 x( }
let new 0
# Y9 |  z+ J* \- ~! d/ W;;
暂存新的一个全局声誉$ U, h4 E' Z$ J1 l5 ]; G9 i7 H' Q
let i 0, P& e5 e+ i& }$ s$ b0 _/ N( R8 s" S/ m
let sum-money 0: @0 D1 v$ q1 ^; o
let credibility-money 0% _8 K7 y* f' a" _
while [i < people]
3 w- j7 ~8 U; i; U- X' E; o[
$ Z! j0 u2 X* N. h4 Zset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))4 J5 f& Y' C  Y+ ?4 G) d6 t
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
0 u% F6 [# h2 K' \1 D, dset i (i + 1)
/ Q0 d. o+ w0 }$ e8 p]8 W! J% _* c! ?, E" x# a. A( i$ ~5 g
let k 0# }( R: E: P( [2 P2 G) O- Q
let new1 0
. U; j& H, N" t2 c( b. W+ ?while [k < people]
6 f9 I/ s! J% W- H5 ~) C[
- \5 ?8 I) b+ bset 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)
, E  O5 `  G- k4 R( Qset k (k + 1)
0 v& F% ]1 |: W]
. P7 I4 C8 ]" Q$ r! \# kset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ! g3 h, X' w) S/ b8 L2 D+ O
set global-reputation-list (replace-item j global-reputation-list new)8 F" V( W3 R3 U* V
set j (j + 1)( i) b1 _  Z4 u9 V8 C$ s0 y
]+ z# X2 ^+ |7 z1 e" A
end
2 Y% @# e6 H3 I+ p8 O; d& T- c- f' z2 u: A
  m9 r# [* k1 h% A

4 B* e9 [( U7 S% P% Z/ U( N9 zto get-color2 Q+ U1 {9 G- q
! T, Y4 i. g1 o& R/ |, {' y& A0 x
set color blue
$ [$ o5 W% ?) n( U' L! S3 E: r
end) U) j: \; }, i

3 m: S3 }  q2 M1 U' B9 `to poll-class
2 K! X, ]% B9 C9 k) Fend; j) l6 R2 \2 z3 ^- i4 E( x2 V

+ e5 K, X: `$ v3 u2 c. D, |! r. @to setup-plot1
3 U- R; Z" @! n& Y+ m- V
# s. d5 m0 Z/ t1 K0 u" I2 A9 Oset-current-plot "Trends-of-Local-reputation"

( k) W5 S- G5 A3 n! J" f) [+ ~$ O$ R; q
set-plot-x-range 0 xmax

0 `5 t  j* H8 e" f: i/ L5 p2 i; x- m
( V$ d; \( `+ n8 W) b7 T+ D  [set-plot-y-range 0.0 ymax
, f5 |/ |; v5 a, K7 J! m( D3 v3 z
end
. n- m6 w/ w  t. T
) m: G- w+ Y1 G# P  [, p; C9 u; S5 T& Oto setup-plot2
6 B/ T/ ~. y# a: k
8 B1 P& e6 X7 w- l" s- qset-current-plot "Trends-of-global-reputation"
: N, m( {: c7 F1 Y, ]) }* h
6 y: {/ b, o2 S
set-plot-x-range 0 xmax

: N0 V+ [* `9 F
0 W4 ]8 W) E: D7 ?7 Dset-plot-y-range 0.0 ymax
: v& v: e% t& t/ K; T6 f: U8 [
end) n! I: K; x* D  ]
. A' ^9 R2 i( c2 x' C, {4 }7 M
to setup-plot39 m' I) i! |: t6 u: t3 v

* K! g! P1 y6 pset-current-plot "Trends-of-credibility"
2 D" I  r' _5 A9 ~/ y7 n

7 F0 N$ z2 ?, ?' G. \& x5 Vset-plot-x-range 0 xmax
6 C, |# K: d4 A9 U1 C! c
7 k9 D( |: ~% D4 S! A. k$ s: N
set-plot-y-range 0.0 ymax
) c% R9 {" g1 C0 k
end
! |1 u1 l% g7 f  K% v
! ~, ]) {; [/ w5 g: D& G: {; Tto do-plots( f- S3 |* N' Y9 F" H
set-current-plot "Trends-of-Local-reputation"
. @; A* K' W2 b& Q% ^1 {/ U, S: ?$ dset-current-plot-pen "Honest service"
( D- }. Z; [+ Gend
1 |% B0 y2 `$ q) v5 N& F
/ h! {6 c- w& U3 `6 b" H5 m7 i[ 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.: X8 c3 v: H( s0 |& x6 s

1 W7 o- R- |+ A6 y& o1 G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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