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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:
6 O7 P# T. Q& p; c& Q3 eto do-business 2 P4 {" D5 T+ G( t; }" {
rt random 3607 Y. P' }1 t1 o' |
fd 1
2 b9 ?2 M9 r# C) T' `" V# d9 Q# E ifelse(other turtles-here != nobody)[
2 u, R/ n8 L( t" B8 a  a' e  K% 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.
+ Y( X/ l( T9 Y! F0 |% K: f  y   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    4 q9 f! G. `9 E$ ~/ [# T  X4 g
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer( f9 H1 {# E6 w. K3 v3 i- T! Q
   set [trade-record-one-len] of self length [trade-record-one] of self
1 ^( g! F1 z' M   set trade-record-current( list (timer) (random money-upper-limit))
# l/ q* J) t8 O+ \
* S$ J2 x; d0 x! g. g  R4 r3 G6 E问题的提示如下:( ?, U4 C$ t7 k  ^- y' s

$ e* `. Y1 o, b2 \! O! K2 c8 {" J' oerror while turtle 50 running OF in procedure DO-BUSINESS
! F* b% [: c( I$ ?  called by procedure GO
4 ]. J& h: D- W/ |3 HOF expected input to be a turtle agentset or turtle but got NOBODY instead.
$ j2 G$ b7 x1 ?9 A
(halted running of go)
+ k2 I+ I3 s4 j- \  l4 M! |- c- G( \$ `" U, i. \0 d
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~~2 _1 ^/ n9 }8 n0 o
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教
0 \5 ~9 F  f/ g3 M1 ]/ m( x* \globals[
2 k! ~* y& K# Q8 Qxmax
- [% G0 E* S# y, p( U* b/ Q" Jymax
3 d5 d9 }# }2 E4 |% P3 `1 mglobal-reputation-list
4 r3 x  p+ S( ^8 h* G
3 N& D$ a+ v& j- R8 j;;
每一个turtle的全局声誉都存在此LIST9 B# p1 K+ y, f2 Z$ Q( a% _
credibility-list
6 E1 S2 V/ [1 _6 k* J  Z;;
每一个turtle的评价可信度: V3 M4 L  p# `; A9 M8 b* L
honest-service  t7 S6 n' Z+ O2 R6 t& s& l
unhonest-service
. I0 V: W- [" c3 }( K% K9 n3 Moscillation
, a* ?" Z% R4 d" n8 b$ drand-dynamic) _& [" X6 `6 w
]
( a- L) E4 R5 Q3 F& X
+ v2 w3 F$ O4 ], @. y4 Zturtles-own[5 |4 w$ U0 {0 l: @7 h# P
trade-record-all- C8 l7 t# Y* \
;;a list of lists,
trade-record-one组成
6 D) Z7 D% ]' H4 O7 H" r7 Gtrade-record-one+ z. u$ O8 g% a& `/ }3 C0 w0 M4 E
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
; o) q: @; j" P; {* o, v9 [# ~; |, s! 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]]; ~* Q3 ~( M, q2 b  M2 L. S
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]$ b* W9 a+ O2 b. A. F9 m- z
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list7 d5 N6 ^3 z8 A/ k+ x
neighbor-total' q7 u0 V& r3 y# F$ t) E2 H
;;
记录该turtle的邻居节点的数目$ p# I( ^* A: c; w( i# y
trade-time7 W' K3 o* s# h! Q) X1 B) M0 ?
;;
当前发生交易的turtle的交易时间7 G: p9 g$ O/ |: Z3 `4 G( Y/ _
appraise-give
8 _9 u2 n: t9 C' X;;
当前发生交易时给出的评价7 c0 H) f9 b( t# o
appraise-receive5 `. V3 M) F. M. e# J
;;
当前发生交易时收到的评价
  ^1 j, P  h  E: A* Z" I0 pappraise-time$ A/ X8 w  u) B6 l# k9 H
;;
当前发生交易时的评价时间$ J. o1 z! l9 |! ~9 H/ P
local-reputation-now;;此次交易后相对于对方turtle的局部声誉4 C) O: J0 P& n6 {( }, H$ P
trade-times-total
% E7 N6 F6 S8 |6 o;;
与当前turtle的交易总次数
$ G$ j1 P9 l1 r7 i! D# c! btrade-money-total% V( ]7 F8 y! f6 n( G. x2 U
;;
与当前turtle的交易总金额
" Y; q' @  [9 ]% ~3 M, u3 Olocal-reputation
* w: f) d9 D6 u+ m9 V8 Aglobal-reputation2 q" A6 T0 p8 Q" _
credibility
6 c) O" c$ R! I) }$ y# z0 u;;
评价可信度,每次交易后都需要更新8 T4 @/ \: w3 @6 V; l& q% A! Z
credibility-all
0 O8 F- T) {5 L* P8 ^) I;;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7 Q) I' E5 M+ Q" ?; n! x

* Q7 N, D9 |1 O0 |  p;;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 X, L( ~6 M* a" zcredibility-one
2 f; o% \' d- O. F9 \1 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people. Z9 P5 ]# g0 v# r& ^
global-proportion6 j( W8 u) R3 g0 w
customer& {$ A4 ]. s; m) |1 Q% O& z
customer-no
/ c8 B5 k& J- N6 vtrust-ok6 L; a& ?0 n- y% c, i6 g1 ]
trade-record-one-len;;trade-record-one的长度. k% n8 u( l+ z2 V6 _! O
]
9 U6 t3 e! |5 H; S/ _% P% L9 p8 F$ G: \$ X0 W, ^: L9 {
;;setup procedure- S- {) r% P. w# s' \

  ^1 N  H6 z! E% n3 Cto setup9 ]. m% z& w9 m& }- g: m+ P) j1 c1 ^

3 A6 P5 h. d  G2 Tca
0 e0 E% P4 e3 _" G' ^" Q

7 @( L: t/ P* x2 o+ a, E4 c5 ninitialize-settings
% {0 I- |4 U  S3 a2 p1 X4 g$ K

# m% o3 d: I0 z% M( O, }crt people [setup-turtles]

' b; g- C! z) j* @2 ~5 ]# r
3 V2 C0 I# p5 S* ~reset-timer

6 u& N1 i  G$ m" Z3 ~. E$ P  F8 Y6 p6 c) L  V
poll-class

4 e7 d- P! D5 q2 \. i1 ]2 h) t  e2 e+ [  g7 _, m
setup-plots
4 U9 x' K9 @* r# n7 ^; {1 ^! A
' A1 a# h! i0 [) \! {( ?
do-plots
1 \; a+ ?, s4 g) I
end% u0 Q* q( T5 d1 Z

3 v- X- p8 @  [& r& @& U, ~, Hto initialize-settings
; \  D3 j7 y$ [
# g8 R, Z  ]5 `6 Oset global-reputation-list []

) @, P$ U* \) ]5 x8 v
) v- v  J7 H- bset credibility-list n-values people [0.5]
) [+ c  Z1 k) A3 L  I% j
3 x" [; j4 |3 f% k1 W
set honest-service 0
" F, h- l& w) w, F% I$ q7 W/ C! j6 |

6 v& b' @% P: n1 n* @3 U5 zset unhonest-service 0
0 r9 g) B3 N* b) |/ L' j
& p4 @- Q) p( C
set oscillation 0
6 Q( o( v9 J* M5 v9 Z
1 \$ V! B: [$ n6 p. }
set rand-dynamic 0

, v( T; }  }1 H' B5 kend
0 `% A6 Z# E3 k$ w9 u. r. W! ]
, K% W+ K3 r' g/ y1 P+ Y0 Zto setup-turtles
! N# A! V4 c; g6 `) U% T) ?5 Lset shape "person"
! g, d) l; J* |# X6 E7 @: Esetxy random-xcor random-ycor
' O7 ^' O2 [( j2 P$ a, J  U  t# X, \$ Nset trade-record-one []$ G6 k6 e$ ~$ c0 u
& F% }9 }2 l/ B7 ~# k& l/ J
set trade-record-all n-values people [(list (? + 1) 0 0)]   e4 ]% U6 ~" ]/ @

6 s# z8 b8 C& h" z0 Dset trade-record-current []
$ |9 _9 R0 X- }) z4 o  rset credibility-receive []
" W) h) c* d3 z( ~( ^, a8 _- J! V$ Iset local-reputation 0.5
& Q& m( H1 f# {4 g4 Iset neighbor-total 05 f5 a. W4 v7 o- M. e
set trade-times-total 0+ d8 c- s+ k% K& d6 k' o
set trade-money-total 0
; R1 _7 y) G" b8 Zset customer nobody9 v3 V* @4 u8 ^9 D8 g
set credibility-all n-values people [creat-credibility]
0 w. |6 C2 B* Y) r9 ]6 O# A* \9 ?set credibility n-values people [-1]
( `7 N; |* @2 H% Lget-color. D. D! c1 g3 ?" _

! [' v3 ~4 d7 C# iend4 H. r6 U; X2 i- e2 W' s

: j: X1 D. [$ i4 L0 _to-report creat-credibility
" v0 s4 \/ F! }% D# v, t2 ureport n-values people [0.5]
& _( a; |/ X+ S6 V: O4 |0 z. Mend
- ~. a5 }. j6 t, |9 y+ p5 z6 m7 Q9 v: \! D2 a5 T
to setup-plots( S2 X2 T: w% s" e; N" B
2 K  W0 k; y9 d  n
set xmax 30

$ v) m- {0 ^! j: [' o3 I; s; O1 @
4 w  \  _' C5 a1 d. Sset ymax 1.0
6 C0 _- E6 s8 P2 i
) ?* t  r: |+ w: S* Y" S- c& B
clear-all-plots
+ W: X7 ]4 f  c' c

9 \6 B# o& u; q+ u" P) qsetup-plot1
  s  ~" X2 P7 u

3 g, k; ]) @% f6 s5 N  csetup-plot2
! {/ F' Y. F  F

: w- _" z( j2 P  J! p4 Isetup-plot3

2 n, ^( h3 H! p- _end# T0 m. t5 C/ Y, k7 I% C. Z
5 R. x# x: U$ d$ l
;;run time procedures
9 a! |" `( N& W* u6 M: }0 \  ~5 p& S+ d9 [
to go+ c; a! Q' S2 x+ c" _- e
( H' u4 v6 ]1 G
ask turtles [do-business]

4 b+ J) N3 e* Z9 w* }/ send7 G! v# }- Q# \" a) }; j, v
) y% S& F; K. i0 c/ I3 z! s
to do-business : J3 z' p5 a. b1 `8 p& A4 F1 b
( X3 n% F6 L) t% w% ^1 O
/ s7 j9 N; C! q' R1 Y3 m
rt random 360
" O3 r8 V0 |0 f* |

: s2 W' \5 i/ K. j* O2 \fd 1
$ x& g  R! ^0 I: J  s9 W  w

+ \/ s5 |8 M7 z% l9 Eifelse(other turtles-here != nobody)[

, _) x. p" f  p/ H2 n( s! I  H# {6 g, R6 N3 O) g2 ?
set customer one-of other turtles-here
4 k7 `- B2 {. c) t5 g6 _0 G& L9 ]

6 `& M: V; D' u- X( A$ ^# a;; set [customer] of customer myself
5 e0 |% C" }: t: _

' U' B0 J' D1 e- Z( Hset [trade-record-one] of self item (([who] of customer) - 1)
+ f! f9 `9 \. o0 c# p- V' x; P' q[trade-record-all]of self. w" L& ^; t" w" _* E6 Q
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
* A! t7 m8 z8 ]% Z
* I/ b3 [+ e5 U; X4 Y# P) j  {
set [trade-record-one] of customer item (([who] of self) - 1)
: }2 H; h7 X; l; o[trade-record-all]of customer

, h: {) c) H) i4 o: V9 E' B- x3 v$ H( r! H! a6 K# {
set [trade-record-one-len] of self length [trade-record-one] of self
1 i) u3 G- Q; Z

# w" O: C& K+ O7 n3 F4 nset trade-record-current( list (timer) (random money-upper-limit))
3 m. M; u2 b$ ^7 p9 N. {
+ h) n( N& z1 _8 n3 z
ask self [do-trust]- n+ f  O+ b  ]9 U7 R
;;
先求ij的信任度
9 Z3 B1 ^6 L* k7 W" x( l. K) o5 B. X1 h2 r
if ([trust-ok] of self); {: f6 O* n; z/ O
;;
根据ij的信任度来决定是否与j进行交易[
- _0 @: x( f% S7 D4 Oask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself. z$ _% m! j1 l

8 {1 Z& @0 t% I; W[

9 A8 x- e+ W" V: V( p2 D3 w7 @+ T3 o# k7 o1 d$ q$ y* g
do-trade

; p# s/ M' H2 U+ a: J* n: ]( K) S7 K2 P9 f
update-credibility-ijl

5 X  ^) i& |" w5 [2 E
  T7 B# u2 }2 R( H! w# L1 ?' ]update-credibility-list
3 k: x( u( e5 G1 O( G  E

  L, l. \7 Q4 E: U7 r% v' c1 C! k4 ?- Z5 w, b# F7 h
update-global-reputation-list
+ f( P+ l9 w0 @* J* q

# y2 I; q, F* T5 o2 {) u2 ppoll-class
. n4 r3 A) |7 p
8 Z2 R- y4 L* U6 w- Z2 L( U' D$ b
get-color
# Y2 t, L$ Z/ K+ {0 b4 J
( W. D% d0 h* s, t& c
]]
! t+ O, c. \8 s9 ]4 g) m  g( i9 b( q6 o
;;
如果所得的信任度满足条件,则进行交易( J6 X+ `" {' O$ G4 ^3 ^' T

- d% k$ O- T  \+ g# `/ u[

$ g" K2 L  }7 E5 }! x" ?' E; O  q7 F3 ~& X0 b$ |# r
rt random 360

0 `" e$ B, g/ f0 p
6 k0 s* `) ^3 L0 zfd 1
6 T  f! y2 }9 x( M  m9 }4 K4 ~
, h# O1 m8 J+ }9 r' `
]

6 ~& D* A2 q3 P) V( |( @. H
( z' G! _8 a' O+ d  _$ z1 [% eend

7 b7 U: L2 Q8 X: I8 S8 M! {
( X# u+ V1 I( b. }  Sto do-trust 2 t, I6 G7 a% B' u' @, f+ r1 ^/ G
set trust-ok False
  [9 b: t, G# v/ @& k9 r
& _$ T1 T( P* b( p
/ I$ r* ^8 g4 x6 f) I- O
let max-trade-times 0$ X* H) g' p, R3 o2 j: r
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
6 S5 q; e/ V9 Z8 {let max-trade-money 0
0 {. ?$ j0 H' R: u; ~foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]1 D8 G+ O2 p0 N! [
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))) U8 N/ D' O4 p4 x
( m; F' o: E0 \' y8 v- Y5 m4 J0 V

8 C* _- d. i: Lget-global-proportion
8 A  z) h+ m2 Clet trust-value
! r5 o  L$ _" A1 M% W# dlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
: v- m/ p- b- a- A5 n4 n7 I5 e
if(trust-value > trade-trust-value): t& ?4 p4 B! s5 A
[set trust-ok true]
# j+ E2 T8 r8 x/ ^end
" _/ w8 k6 X7 p8 O5 g4 |: b( ]% p+ ?" O) t+ c2 O. k8 r
to get-global-proportion* K2 ?; ]8 T' j) O/ G
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)2 t* ~* e  X4 Z
[set global-proportion 0]3 a+ U* s, M. f
[let i 0* {$ W! e) O. {. x4 z/ L
let sum-money 0
8 a4 ]6 c1 b% d" J: {6 J2 u. P2 ~while[ i < people]
, L. d2 ]/ }5 w[
+ q: m! K) [6 z1 `if( length (item i: n. y5 F( b; ?" \
[trade-record-all] of customer) > 3 )
- D0 U8 m5 ]% |. m2 @# b" q0 p
[1 Z0 ?" |6 L) R$ {
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
8 y. m0 K1 r4 @1 w* g]; _" T: {8 }0 @) d
]
' k5 l# i# c( j7 _/ N6 ~; L3 tlet j 0$ d7 E- `/ r4 _! b% L5 K( B" W+ h
let note 07 F7 f7 F: k7 N( m- {
while[ j < people]
! L* Z0 C6 ?, x( ~: J4 P6 K3 C+ a[$ k: f+ e1 a6 K3 o0 h& w* t
if( length (item i5 A5 L0 o, m9 P/ W! `9 {; E6 d+ v( d
[trade-record-all] of customer) > 3 )
$ V& q& `/ O6 r) ~) T
[' V6 g5 g/ T. M8 u7 T0 X
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)* y6 V1 w3 z- Y% ~9 U! C# z7 L
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]0 V9 z9 R  Q+ r3 x
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
: r: j# L4 c2 O5 o- Q]/ s! O7 R4 G  x" R: j0 r
]
$ c6 C# g6 `# Pset global-proportion note# E, B( J% S# j
]0 ?+ [1 e2 e; F& T# q& c$ f5 i% N
end
6 ^8 q; n$ q! D4 B2 k1 B1 C$ k  `
- Y) {. j4 @) d; ~, xto do-trade
6 [  r( C. k4 K' T/ y  P;;
这个过程实际上是给双方作出评价的过程4 l4 S/ F( I' `, R4 _
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
: I( R- r9 Z9 }, m* X8 W* _" Oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
! m$ b3 n( W3 V3 {8 K# Q" Iset trade-record-current lput(timer) trade-record-current  Z+ B5 N+ W* @) s8 P0 F& S' F1 }
;;
评价时间
# ~( T8 }! R6 ~7 W" V$ U# Iask myself [" b4 Z+ a) B: C7 J
update-local-reputation5 H2 z0 w, m* B7 a6 n0 K& G
set trade-record-current lput([local-reputation] of myself) trade-record-current
+ Q) Q7 G- I' ~]
  d6 H, @  r: ~/ E) |set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
6 w& h% X/ ^* ?2 U2 [;;
将此次交易的记录加入到trade-record-one
& g$ G) u4 v0 \& @set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
. n( r* u7 f  x4 Y5 y, ~& wlet note (item 2 trade-record-current )# b- e' w, M0 Q
set trade-record-current. s/ h  ^8 R  d" i
(replace-item 2 trade-record-current (item 3 trade-record-current))

" X' P. Q) J  w  ?( n' n+ @) ?set trade-record-current- h1 `. ^. Y8 V2 ?
(replace-item 3 trade-record-current note)( U2 H) T# k# ], V1 n' p

$ }) S/ e7 s. ]3 y4 y- m

9 E3 [+ N9 ^0 ~9 |8 t: ~ask customer [- Y' |2 o1 X4 j
update-local-reputation5 h6 H3 {0 Q. j+ W6 t4 M- n
set trade-record-current. I8 h. C; Z* e7 B
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

2 t# b' g, ~2 ?, U& t]0 E; S, o( p7 u1 x1 k

( L) ~& |3 C. U1 V$ a4 `  W: C

$ H4 `7 B) z$ R' i: k  R4 }set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- y8 u4 j) Q: E
1 r5 v9 U: R' _0 E+ R1 a
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))2 r; j" \5 B* H( }( t' ~
;;
将此次交易的记录加入到customertrade-record-all
8 c1 }+ h2 m6 x1 ^: i9 T7 kend
# c2 b8 _2 u" }
$ U0 Y9 r/ i, @0 J2 @5 l& m' Oto update-local-reputation
6 q2 q: H% ?# q: E  Oset [trade-record-one-len] of myself length [trade-record-one] of myself
* \# ~! @1 o2 V, U! v) E. R% f: `1 F" G  ]" H
2 T3 M9 n" L0 N6 \
;;if [trade-record-one-len] of myself > 3

* V' Y- O- |+ ?  I3 n2 n& _update-neighbor-total
# w/ q9 a" {" x/ @. o7 G" G# G$ B; K9 \;;
更新邻居节点的数目,在此进行
' C& J$ s) L( z' r( A* w/ ]+ Plet i 3# `' I1 H4 B' q, q; F
let sum-time 0# G0 ]5 d' x" ~4 c
while[i < [trade-record-one-len] of myself]3 f+ c, |  d# {  ^8 g( |2 y
[
6 `! l# X! J+ d2 d6 j( I! C  [# ?9 V1 lset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
3 W& |3 T- A3 k* yset i# K- ^8 c' Z' M1 a# l4 E& R) d
( i + 1)
- X/ W  G" {$ _6 p  N, `
]$ y) ~0 l# t! L1 [# L# T
let j 3
  v1 i: v- V( Clet sum-money 0
2 c- H) u- [# L' D6 Kwhile[j < [trade-record-one-len] of myself]
1 R1 N7 }, }! l( T2 c. u2 y[. n8 P; g* j) A. w( J% @
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)
/ j$ G2 L! Y5 ~& J- M4 B/ Z) o) J* Hset j
& Z4 e( Y; B9 }( j + 1)

8 _' A8 Q" h8 q4 t( E]
$ N# m0 F1 W2 S/ F0 t: n" I7 @let k 3/ t( _& c, |. y1 c
let power 0
4 G8 A; D- K% T; i* H* `  {4 d4 Ulet local 02 L& `* s3 y( n6 j! ?# w
while [k <[trade-record-one-len] of myself]
! k6 Q& I' [, z& c& F[  ?: K$ A3 K: ^5 a
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)
3 q7 x: |) w% E- w% \0 sset k (k + 1)
. B% f4 C0 ^$ O7 X! L]# f9 J( ^& y0 }. I, r+ X
set [local-reputation] of myself (local), d3 S6 x2 N$ O' e! v
end; |0 f: j0 M1 G

0 N  s7 {( w: {/ ^" h) H8 Kto update-neighbor-total
! W$ G0 G) t# S* _8 _" P6 b
" i) T, N, N% Bif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
8 ]* h9 O1 \; X! Z; X
/ g. }0 Z" F7 L
" g( N0 M, f* K0 s4 h( \0 q
end$ I& K+ e- ?, `+ E: T$ O

+ m+ M! V9 P4 x9 W& J" Jto update-credibility-ijl   J2 m! I# y4 }" \% O

1 `% t% Z2 H9 A& }7 @: A; `;;
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。- V( ^, l% T, N- {7 `2 \
let l 0; \# W; `0 N9 Z& Y& E+ j* h# Y! I
while[ l < people ]9 n; e9 z4 x. d% U7 L  t
;;
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
( e7 u/ a. M6 c# e, O5 w[4 m7 F% z5 s0 S: {" a; l
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)2 W. b7 z. m9 j9 X/ p
if (trade-record-one-j-l-len > 3); x% v% O  j% A, D6 i
[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
& ?" X' c6 Z% a; j1 {let i 3
8 l" j7 Z: W. B: ]' N/ k6 T( j. ]let sum-time 0
0 _; A+ r8 K: j. |$ H6 Twhile[i < trade-record-one-len]0 [% u& m; ~' a: g
[4 ?; e  f5 N1 [  d) c$ b
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )% g3 Y. X9 J; b( }0 [. l. i+ q  j
set i7 u$ ?/ [* B4 B5 N4 H6 }
( i + 1)

& M% L& f: \+ l* l( ?& `+ K+ u]
3 |$ w0 h! B$ flet credibility-i-j-l 0
5 y0 N: w* R3 R# C* Z;;i
评价(jjl的评价)
5 T" _# ^4 V- V/ a. A; v1 Zlet j 3
, {# F+ i7 y. f, h0 ~/ \1 Y  @let k 46 W$ Q2 U0 ]% C  v+ N! U2 Q! ?( U& t' o
while[j < trade-record-one-len]
; p  Z5 S* z; B- p& b4 J- O8 N[
2 ^7 m3 P* C4 @: L1 \1 P$ owhile [((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  z; F! I2 w& c
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)
5 H2 j) F5 K: V+ Vset j
4 l' z$ i- c5 X% H7 |$ N( j + 1)

/ B5 w2 q1 e1 i% b  q]( D" d7 `/ Q( I- ~. K2 H) Y
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))  k, D0 f5 {* e7 n( {" v
$ z4 c0 D, X6 d. f! h" N

) x- a1 B* b7 H. F/ p* P1 Z# wlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))0 M" s' ?& L8 e4 `: {  I& |
;;
及时更新il的评价质量的评价
) W/ ?! s" {0 O1 o9 f1 Yset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]# n; F; K. {  i5 M! e8 B
set l (l + 1)1 w- |7 D. k5 o
]
" g! z. H# ~: e9 }: x# E2 {8 eend: {) D* D" w; m$ |
( Y7 {6 P! t! E& }7 T7 C
to update-credibility-list
8 w& H$ G) X% d! ~let i 06 `$ f2 Q& K/ G2 e- n
while[i < people]
' v: N' v- m+ _+ A% Z- ]3 m6 N[
) I1 I, Y  C$ H" plet j 0
+ {8 j& G1 K# C$ w9 g( M" vlet note 0+ S( P8 k( ?5 ~
let k 0
& X$ i; ?9 c" x;;
计作出过评价的邻居节点的数目
0 e7 U1 q6 G# K  Q+ twhile[j < people]
3 @6 S) C+ n  Z[) p" P6 x- m+ H/ l
if (item j( [credibility] of turtle (i + 1)) != -1)" n; t: M/ V+ J( E  Y
;;
判断是否给本turtle的评价质量做出过评价的节点
$ u5 _  j" W9 }& S[set note (note + item j ([credibility]of turtle (i + 1)))
  r& Q6 x& ]" s2 P: {& H, t;;*(exp (-(people - 2)))/(people - 2))]
  d8 R2 o! b* P: P% B( W
set k (k + 1)# T( j" z9 F8 }4 w6 Y
]' ]: n( e. J5 b4 A
set j (j + 1)
: T  J$ F+ O0 @3 T8 w6 b]
9 W, h% x% e, ^; F9 tset note (note *(exp (- (1 / k)))/ k)* o+ r' N7 q2 m0 v- \6 H& z
set credibility-list (replace-item i credibility-list note)
) ?$ e& ^, O- q2 s3 Y& z/ aset i (i + 1)( W: s: T: T& m  g- T6 `
]
0 l* e+ g& ^- Uend' \# h0 Q7 J/ W! P" D

/ j3 S5 M: S# n' P& ^3 tto update-global-reputation-list
6 x% \0 ~+ y! S' Jlet j 0+ f( L' Z  l( s, B
while[j < people]
, n, U% M- Y' O7 z" O' q[
# c9 Q* p5 Q5 _' s$ }- G8 Q2 ^let new 0& _1 @5 g- G7 h* R; c& N0 T
;;
暂存新的一个全局声誉
' {0 @* I8 ~' f- `& B/ w% E( Olet i 0' F) G, B8 e% u- X/ ~4 I( r5 B
let sum-money 0
5 r- Z! o  T  Q( B" a5 O$ Zlet credibility-money 0; D3 z4 L+ S. ?/ e
while [i < people]7 {; q, m! h: ?% L5 r9 D; x% ?
[
9 M* v4 c" p; j: Y7 g% O% E& Tset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))2 Z4 G. S# }9 N5 s
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)). K- a7 W4 M4 a* Y
set i (i + 1)" N# r3 b1 w# V8 Z! K9 o
]+ n( \% n: s: m4 `/ |
let k 0
$ N5 z4 s! {1 ]5 [# C1 r/ A) a" x! w, elet new1 06 U% Y& g, g1 P) q$ Y' m- U
while [k < people]8 T" v6 d) w8 X6 }' @6 @7 f; v+ G
[0 a$ o9 T2 j# q5 Z: ]! R7 o. y
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)
% l4 [  `' V6 s; gset k (k + 1): N' c3 T2 L1 k1 ?; n
]: N" r( K! U" V* X# O& k; ?) q
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 9 x" q3 q6 |6 C4 V+ H; O
set global-reputation-list (replace-item j global-reputation-list new)
$ }6 c/ S0 o" H0 O  J  {set j (j + 1)! h8 [+ u: h! H5 R; D* }$ F# b
]
) j) p, n7 x+ Z9 h8 H, Gend# p; B' {, T# T: W* c& v% o+ X" I5 ?
' M' ?0 a' i" m9 g$ ]/ I  R8 B
/ l* f# ?7 w7 C) g! [$ u$ h
8 u1 i# e( p+ H; c
to get-color
: }8 [  I0 c' X( B' _- G: a- y+ J! m. `1 b9 i( g
set color blue

* S8 X) E7 c+ yend
6 ^$ c' Y, I' P" j" q8 y% |' i+ f" @" ~9 f8 |( K
to poll-class
) N8 ^" N, b/ C8 Q7 ?0 m4 ~end
+ V8 p& H1 \0 @7 i; \9 k, R
- s! S! x& V! x' |to setup-plot11 }! ~* _$ ~/ r( S2 u
# x/ v8 n$ I. |; k% ~1 z$ f
set-current-plot "Trends-of-Local-reputation"
9 r- `+ `# j$ J2 C0 n1 I; x9 S

$ O% W$ d1 D7 ^3 }$ V" S& ?8 Kset-plot-x-range 0 xmax

1 S  `2 z" L2 ]% o1 A6 c3 r8 l  |" D1 b* p6 Y. o
set-plot-y-range 0.0 ymax

  r5 @$ a$ W) V: k* k' a% ^- iend
5 ]7 {. p. U. Z5 }) ~0 m+ f( F7 J
) i, }, @- W$ f, O! T% xto setup-plot2
/ E7 T) W6 X/ I: k4 n
8 u5 K+ A  b+ P. t7 t# eset-current-plot "Trends-of-global-reputation"

7 h8 n7 A. ^2 s* d$ F4 o& P. ]5 Y, A; o) z9 q
set-plot-x-range 0 xmax

* \' k: m1 @% z4 T% X
. i0 e% K# u2 o. I/ |% q6 r& Yset-plot-y-range 0.0 ymax

# b" R; T; R# _$ \end
8 W1 _; [9 p9 ]3 w! Q- j) D& P' I  X/ P0 q
to setup-plot3
3 W- ~( u6 F# Q1 O  q5 _% |! d% \+ d6 t
set-current-plot "Trends-of-credibility"
" S, ]: `- e( }' e: C

( d  D; I. b* R- jset-plot-x-range 0 xmax

. ^' L! y8 L7 B8 d! Y
& c/ g8 e6 u* q0 p* m& ^set-plot-y-range 0.0 ymax

, b1 j6 C: a1 h1 H& bend6 _. F. Q) x" s: e  H4 j

* L6 y# l0 A* e7 {$ E+ Qto do-plots5 z* r' v8 N- b8 }" P
set-current-plot "Trends-of-Local-reputation"" V6 J: [9 V" C8 f6 w- o
set-current-plot-pen "Honest service"
  z$ v! d1 \2 Wend
: U9 ?. ?! a  k# M  t/ b
. E3 t0 @7 g1 [% R& r[ 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.% v6 }, V2 H" x2 {# Z, V# \! Z- E
4 {# @, `4 w9 E/ T* J
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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