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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:
; @) U0 s' s4 n* Qto do-business   }  N' @: Y) _; J" e) @' y
rt random 360
9 f6 ~4 c2 }' q$ X fd 12 j8 l8 _% C0 V) h- H
ifelse(other turtles-here != nobody)[7 x# |8 |7 A! f9 A- a, H6 \
   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.) i3 _3 p4 Y9 B/ x* t9 e
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
0 U, p+ j8 J: B/ L   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
7 [7 O% \% z! S$ K; T   set [trade-record-one-len] of self length [trade-record-one] of self
3 K2 M8 F. }. R8 `4 t   set trade-record-current( list (timer) (random money-upper-limit))
, A% ?( b# K9 p* t( E0 B2 H8 S) c" C( k: q3 [# A3 J
问题的提示如下:
% f8 l% n/ a2 M7 H# h4 n6 H3 C. S% F6 I6 ~3 H' [
error while turtle 50 running OF in procedure DO-BUSINESS
' g8 ?$ N$ {' W' y2 S6 b  called by procedure GO- a# @9 p0 {* z. o" l# I8 i
OF expected input to be a turtle agentset or turtle but got NOBODY instead.# e0 B! x$ G% a# L% R4 g9 y
(halted running of go)7 ^! ]% b# q2 y& M* e+ J, q
" k7 I9 v( w; o9 R
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~~+ o* c, w- a! d) O. A" W
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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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% R0 v$ A3 ?) I9 a
globals[
2 D. h9 E1 W7 k1 I+ L9 axmax
6 l% S, ?2 \. m* r' Yymax- O  F2 y8 X& C& J' K& b. f) [
global-reputation-list% e9 k" d. W1 B: I8 F+ B2 u

( ]) V" P) d8 r* v( k9 T;;
每一个turtle的全局声誉都存在此LIST; Y3 H, V" Q/ X6 g3 o. l1 K9 v
credibility-list/ W1 b  V8 ?; @
;;
每一个turtle的评价可信度
6 {" x7 f4 N, Jhonest-service3 v  F, _/ N4 i/ `1 j/ V% D6 d
unhonest-service
4 A  ^: H' K5 i7 K2 w6 p7 N! X, y0 foscillation4 I4 ?7 Y+ L$ \5 C7 y* H
rand-dynamic8 x0 R  ?5 w! Z5 t
]
+ p2 j# H: K! n' i9 Y2 {$ E
. e- Y9 r. |7 x7 m, v9 Jturtles-own[
4 I+ Y  r" d& L& r, g! R7 Q% [& utrade-record-all$ E6 C# d5 Z( `1 {9 Z; w/ G3 ]
;;a list of lists,
trade-record-one组成6 S0 |! l# p' V' }8 l- \
trade-record-one' w8 C9 }, s; H+ N
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
2 E$ o1 f% {0 k  [2 Q: J
2 V) a2 ^5 {1 k% A8 ^  w;;[
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]]
) f: _& U7 m0 G+ y* d7 Ctrade-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]
- U; |/ }- Q' S, `- s/ W- ecredibility-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, f- j6 l' `3 Z; r, m
neighbor-total
& X0 D; O( v2 B) v( F) W* V% I;;
记录该turtle的邻居节点的数目) m& g* N5 Z) e( ~) b" `
trade-time: `6 A6 V) c4 T$ e% g& E( Y6 w# y
;;
当前发生交易的turtle的交易时间2 u$ j- x: S! t) j# e# ~
appraise-give: |3 F( H- Q( t- R  a0 s2 V- `
;;
当前发生交易时给出的评价& r" O; \6 F: V& a) G* U2 ^0 b
appraise-receive8 O+ B7 ]  t) F% O
;;
当前发生交易时收到的评价
! U& V9 D2 m, N  a" Eappraise-time
" S! D- l& ~9 s' |4 K2 v, j) a;;
当前发生交易时的评价时间6 D$ \8 a- g, S5 z
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
" v- i1 h& ~$ ttrade-times-total
, |: }1 U7 t$ w& B5 B; _;;
与当前turtle的交易总次数4 @8 J8 s% c3 W1 s# R
trade-money-total
- t' V! Z& x7 D, |;;
与当前turtle的交易总金额
; X: |0 M6 {' [7 u( L6 Mlocal-reputation
% B* ]8 V4 s6 |7 U8 Y6 Yglobal-reputation
* }7 M3 K7 b* Pcredibility6 R+ c& i- d: H' H+ T$ D
;;
评价可信度,每次交易后都需要更新% b9 @) x8 `" e, \
credibility-all1 \2 t5 \9 I# P4 q0 p& B! O
;;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) k$ b* }; ]) e4 p

( e5 u, X" O' b8 G% \;;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  I) V5 y  [- ?4 I
credibility-one
( A) p9 j! p2 M; z; v/ {;;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
* g3 A6 m5 i' a) h" X9 L$ Wglobal-proportion- S/ i! S: z: ?( P
customer
4 x% |* g. t& H) w. C, O( a0 R' Ycustomer-no
# Z5 d# m* ?$ K$ q8 p6 Atrust-ok4 B1 z3 z! `5 j) k1 y7 `
trade-record-one-len;;trade-record-one的长度$ d, v" T# N; i% C6 y' u* t
]+ C+ e; G7 W' e( d, Q

5 f$ I3 B3 S: s" u;;setup procedure6 r; W0 n1 p4 _& @1 U& m: G/ |2 ]) O9 m

: o0 K9 u/ g: o3 \6 l( zto setup0 H1 z' K- z4 @9 J: F
8 y6 r; U$ L, k; \1 t7 h
ca
6 Z7 ]6 y7 n9 J! X& W

" |/ x* V9 ~4 y: L* x9 ]initialize-settings

* W0 ]; f! S% m5 s
+ ^, u: k% ]: K" V# gcrt people [setup-turtles]

9 `& V& f! V  h* j* g/ E8 K  V3 ?) o0 u% H
reset-timer

2 j) a5 t* i$ }+ H: R. j0 B: K* |4 y+ t$ H
poll-class

: U( o* |) k9 _1 O6 _+ `9 b0 N6 k
* n3 j5 E* x) O6 {setup-plots
2 g. L/ s! _4 a# d, _! I: b
& R. G# l# s" i; X# j
do-plots

5 Y7 F1 L! W9 \3 r+ n( ?end/ J0 H& c% _' C1 p
. t6 v, J- L2 v0 Q7 }& h
to initialize-settings6 D6 O. ]1 Z8 {9 m
3 \$ r7 [: i9 K# p# b9 ?
set global-reputation-list []

( F% z6 z) W  w2 _/ ~* C) s- Z5 n
set credibility-list n-values people [0.5]

8 }) x/ k' P) Y+ F4 q
+ ~9 @0 S" p: Dset honest-service 0

9 {/ @2 y$ |5 j* p& e  V7 S$ s% W- q" N
set unhonest-service 0

  P: m; ]- T$ g
# [) Z- U' i2 Cset oscillation 0
% _1 x% ^0 s4 K" ]- \$ F9 o
8 D; C+ ?, L- L$ f
set rand-dynamic 0
" g" B0 v! c" S& ^
end
$ j/ \$ G# T( j  o) Y0 L9 o, J9 v7 _# T7 Q
to setup-turtles
; C( o* P3 @( c( z& g  C6 `8 P  Cset shape "person"5 q: j6 S- A. Z/ j$ x- W
setxy random-xcor random-ycor
! o0 E- j0 C" O, }6 z9 ~8 qset trade-record-one []8 Z! S- u/ a% f/ _! _7 x" g

' o% Y1 v, @2 m  m3 y: z" [# Gset trade-record-all n-values people [(list (? + 1) 0 0)]
& c/ e# ^' c" t* P1 J' N6 i
% g$ o  G+ D+ t& {7 I% q# n- @
set trade-record-current []
  u& {( P) B; u- L# Pset credibility-receive []9 a3 g8 e; d. X1 k) b
set local-reputation 0.5
) j) ?* O5 N. Z* N3 M5 fset neighbor-total 0
$ G9 M) H1 Z- [. |. `, wset trade-times-total 0: @3 u1 n4 F. W9 {& a* Q6 D5 V
set trade-money-total 0: v. X8 G- D0 l3 A
set customer nobody6 u& i4 G/ }3 y) b* Y* G. T
set credibility-all n-values people [creat-credibility]
" j% N7 G% K( B, gset credibility n-values people [-1]0 O2 C& ^) g0 P* C! V
get-color
# D* H* g3 I2 `+ f  M
. m( G3 @6 Y! m8 a2 c9 K: b
end
9 t4 l. d( v! k& P, o
! K- z: J1 I1 v0 tto-report creat-credibility
9 U5 U( V  z4 J& @( \$ x+ lreport n-values people [0.5]
" w2 N0 g9 Y6 A4 wend
% A9 v2 M2 {5 h4 `. X4 N( S* {* ?4 d
to setup-plots+ G+ N  e  K+ ]- f, c) ^! X! a/ Z) S% ]

* D7 z6 j% M4 t, Oset xmax 30
( Z5 f7 C( m9 X( _7 I/ ]) ]( h

' H: Y3 f5 u5 F8 F3 B4 xset ymax 1.0

- T, w/ ]  N  \2 Z& \7 g$ ]
' V/ N! O. I0 M: }clear-all-plots
! q/ m7 ]; b$ I9 Y4 u

3 O- ]! Z/ o& n- z3 Z' hsetup-plot1
: s" G- h2 p9 N  _5 ?4 H8 x
3 ?; ]- K# E, P- ^% k3 C8 ]% A" D. l
setup-plot2
& b6 Y) _* B, h3 T; R: s

( r* `  i* B0 F" Isetup-plot3

0 Y' {1 f1 C" i: ]: jend
( X1 d- r4 u; J5 Y5 z3 i+ }- l, z% N* h% B8 U+ z% M
;;run time procedures
8 M; N; s6 D$ ^+ Z$ n, E2 z% V3 F8 W. A
to go4 |* j6 N. m3 h2 {7 a) `
% D& |! K3 `" Z
ask turtles [do-business]

9 j* |# u( u; D3 C4 Jend1 _: W8 Q6 V- v- T
( T# ]" m3 H* i0 u8 i
to do-business ; T6 x/ O0 i' `% x0 m( R) [1 i: `/ }6 R

" p2 ^7 a: @" _! R5 k; h! W& z1 P3 Q1 b* L( k# ]
rt random 360
3 R, @! j* h0 z" V" {% O
! R! a9 @6 u* v! E. o
fd 1

4 S! j  K- p* ]
# b0 Z: r- @/ h9 z7 Kifelse(other turtles-here != nobody)[

$ D, k- p' a, t+ i# i+ O( m( U' q. H* _/ y: d1 Q$ m
set customer one-of other turtles-here

  X2 y1 l0 D0 n3 i9 o
3 c$ p  C/ f2 B4 a& X0 k( _;; set [customer] of customer myself

0 I4 v! n0 m6 @; ?1 s- H) @' d9 G& F
set [trade-record-one] of self item (([who] of customer) - 1)5 `. i- E- L7 y" Q" @$ C3 b0 q
[trade-record-all]of self
) ~- x; X2 L+ x: U& o;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

/ Z5 x4 z/ U& R" @2 S. L1 M/ G8 T/ ?, w
set [trade-record-one] of customer item (([who] of self) - 1): U! a$ U- u! k: W3 ], V$ G8 A
[trade-record-all]of customer
# o1 T0 ~3 D7 w: ?5 Q! _2 v
; C9 T8 t- z  ?! G
set [trade-record-one-len] of self length [trade-record-one] of self
6 ?6 s5 z2 r. N5 T8 l' M+ H

7 [9 |: U' A) q) cset trade-record-current( list (timer) (random money-upper-limit))
, p: f% n8 [! |

- T" h5 H6 U- I- Q' h. `1 V7 lask self [do-trust]' E& f9 z6 W; L- E; x- p
;;
先求ij的信任度
6 N" M& P5 B- v5 _2 b
# A  P+ i4 z) y5 l5 \, O) Gif ([trust-ok] of self)8 r* z7 ~! d! D# L" z2 K: p6 }/ o
;;
根据ij的信任度来决定是否与j进行交易[0 A6 W5 W! D* I; }7 ~
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
  B" m) U: _9 v* P, [/ o6 D% N) L; D& y1 t( s, G' c
[
; T, x: X: C8 c
) {# k* x9 w$ s! d% ^
do-trade

8 f* S$ G7 z7 ?# d6 t  r
( B4 ]( P- o8 o$ w5 bupdate-credibility-ijl
5 X; D  s' w0 ^! g+ w! m" b/ O8 q- n# n
' D% l; q5 I  `
update-credibility-list
- k9 t& B* }( k" {) \8 D

. J2 E8 W8 K1 E; k% }# G4 X: @0 N1 \- _. X% F3 K. _: a# j
update-global-reputation-list
9 E# t" L  \) O- p

& T" ^, m" O5 D3 i+ lpoll-class

4 n( @8 u$ |2 B/ W* U0 b8 Z2 X' K8 ]% t' _) A
get-color
6 v; F) d) l* W- e3 l% l0 |# T
, u8 G" h  V7 b& Q
]]
  c4 `6 J7 W: A  r- H3 g* M* h5 J+ M/ M: v
;;
如果所得的信任度满足条件,则进行交易& d% y  ]" j5 L
" b( P" S3 Z4 M2 b
[

- q# m: ^' R# ?3 S3 v' f" g: y
! u3 P# S1 [' d2 p& t, t% brt random 360
9 _. \2 m8 [1 G. R$ H. s+ `
) [' N3 P7 j% h; @9 D+ L
fd 1

8 n# c6 H& m; l" a# k- @) f4 U" _. i* Q- R& J/ h
]
# E2 U2 b! L7 h2 L" c) s
0 S0 G- F& w, Z, \
end
: W1 y) T; }# o! j: j1 P- _" @
3 Y, r/ {- r+ m5 L. B" x3 W" H1 s. \
to do-trust
8 b- e1 ~3 }% J/ r! V5 z# V4 Aset trust-ok False$ E# E. L6 r% {& r6 E% N# g7 j
4 A) o3 a6 U6 v5 ?: k: _8 N
" x% K8 b3 D+ ~9 |% d& q
let max-trade-times 0% x/ t8 \2 s+ L
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
: r" J- N+ Y6 _+ }# \! K  Ilet max-trade-money 0
% K& b; w& E1 ]. ?foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
# a8 W! {( u, m2 r. s0 olet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
5 l4 G' D: I1 R5 z0 c0 U( G/ P
& L$ @; B+ b: z4 s6 Q- J

# ^' [  V' F  U% ^# zget-global-proportion
! U: }3 ~4 x5 l$ `) G( Rlet trust-value
. U- o3 X" I' ?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)

2 e2 |/ j  s. n. F# q  ]if(trust-value > trade-trust-value)4 V' C0 h+ V8 Z+ t# T6 S, @
[set trust-ok true]2 Q6 W0 `, r4 E
end) b9 e) n  s- {6 j" y4 X( m

- Z6 ]  [( @5 Rto get-global-proportion/ H1 F2 V" t- L: W* l) `( G
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
9 [$ ]" W4 h' E$ U6 q[set global-proportion 0]
( N* f. _7 q: L) X( ~% t7 \/ _5 A[let i 03 C$ g( C9 r  }. S; `4 _$ r( B0 |
let sum-money 0
2 x" [) s9 C5 Z" {0 k9 k0 ?7 T# Kwhile[ i < people]- C0 m) ~# a' e$ v2 i& I
[
  H2 w( f  l& L/ xif( length (item i
  J0 V; Y' ^4 C$ P[trade-record-all] of customer) > 3 )

) I- A) L% J" ?+ n) @[
+ p$ `/ w/ j1 x4 [2 V6 S. t  i3 r  uset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
) I0 ]2 \* k1 {& C" h0 ?3 J]
. j& l3 R1 v7 u]
1 c$ O+ n4 @% H3 L$ ulet j 0
; [: W+ V5 p6 M  t* H# o2 |let note 0
. @+ e. C  ~5 jwhile[ j < people]
6 I- c/ N3 k1 t+ ?[: p0 l& j' A4 j; ]+ K
if( length (item i
3 E9 `1 D8 _* y7 H) ^* a[trade-record-all] of customer) > 3 )

) K, F/ i: B2 b! w; c[
4 c* I5 E. I* ^9 T4 [ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
: n6 {& g3 h2 o0 y7 ]3 k( F[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
! W0 f& {7 s, g[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]: H& Y1 ^& U# g/ D( D( c& f, m" F: {' k
]! a+ `! k9 }# X, t2 y+ W
]/ }9 W6 A  v) X! @
set global-proportion note
% k$ w* k1 o. F% _, U]8 t$ L# `, A, j" d0 B
end$ s- S' O7 [. ]& u3 `- ]2 }9 \

6 e7 \7 W& o. k$ vto do-trade
" b/ X! C, G$ [9 u;;
这个过程实际上是给双方作出评价的过程
, d  v' R3 f8 @2 M8 lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
' i) J& Q$ T( nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
- Y. C; z& D" ^set trade-record-current lput(timer) trade-record-current) j( }. S6 Q7 x
;;
评价时间- F1 o# C( X$ B; R' G
ask myself [
% l1 h+ t" _: r) K$ oupdate-local-reputation
6 p' l7 @) h. a9 I6 \- nset trade-record-current lput([local-reputation] of myself) trade-record-current. @( C9 I1 p+ P, u2 ^
]( a& ^9 x5 M1 M% `- ]
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
: ]- H' O5 m/ q8 O5 |' W;;
将此次交易的记录加入到trade-record-one- t& Z9 C9 h/ d1 j+ R
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
: x, a. y+ E/ \6 _9 qlet note (item 2 trade-record-current )
. q1 o2 b& \7 d' g3 ^4 @: y+ Dset trade-record-current$ Y9 ?9 i5 k5 F2 A$ d. T
(replace-item 2 trade-record-current (item 3 trade-record-current))
$ F$ I& B/ ]: U, g) h
set trade-record-current
* w, m9 h% J- g; J(replace-item 3 trade-record-current note)
9 ~7 K+ r' W5 V. G; |% h! M5 n( s7 {2 K* i* N8 M, q( y; |% ~

! g7 C- M& ~$ \ask customer [
; ^8 f( F( E# I+ `* `7 ]# H9 Rupdate-local-reputation
2 y5 I( c' P* g% ?$ E0 F  eset trade-record-current
* }8 |: d7 z* V# D3 O8 z(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
. F! y6 g9 @& X5 H- J2 C
]# @, t6 d7 a- \" n, R( }
! R! C# I; p8 q9 ~4 `% t7 J

4 n: E0 ]7 I& J0 E9 ]' zset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer/ |! G" a  V5 r: i& X9 B

! v# g/ \4 z4 A5 w2 ~set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))& X. Y, ]" n$ {9 E- y2 o
;;
将此次交易的记录加入到customertrade-record-all6 P8 _& T! y  I7 p
end
1 w( p% m* f# O8 ]" ], O' ~: U9 k
to update-local-reputation
, V5 O8 F. M) v( Bset [trade-record-one-len] of myself length [trade-record-one] of myself5 n6 F2 k* i9 n* K
4 F4 |9 m7 J* p0 v* O
% ~7 W7 V/ i* Y
;;if [trade-record-one-len] of myself > 3
8 d- Y) T* r$ ~, ]$ @, ^
update-neighbor-total
' }8 K' A) {3 M1 R- Z, G, X;;
更新邻居节点的数目,在此进行
. R8 a" A/ D3 d$ p# g' j) Clet i 3
% ?1 [3 `7 p$ Rlet sum-time 00 [6 W7 `5 ~% ]0 k. d& S- A
while[i < [trade-record-one-len] of myself]
2 b& |4 X, P& Q# j+ p/ C[" O. t; d5 n& C. t4 p
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
; n3 a3 t. d' C9 r, ~0 k5 @, Dset i
* S6 M2 a4 Y) S" p( i + 1)
! H5 `8 d0 I6 T: a
]& e& L% k5 B! ~8 x4 y. q
let j 3  d8 M3 @3 E' A( x  X) X2 E
let sum-money 0
7 s' ~( Q3 t7 I/ J5 Q! U" s3 jwhile[j < [trade-record-one-len] of myself]! w+ z3 a5 A8 H, _7 A7 X9 \
[
. b  A/ I0 x+ E$ u+ |" v1 Cset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)) [7 i1 }9 o3 i  p" f$ \
set j% G' O3 |4 v/ C$ [3 y
( j + 1)
& K% b& D1 @9 \2 \; a6 |3 b
]0 x$ N' k( K- G+ ~
let k 3
) x$ A) K* g3 p: {let power 0, R! u% @; [+ z
let local 0
* a3 P4 h  C( T5 n- `" U1 fwhile [k <[trade-record-one-len] of myself]& b4 t+ n) w' u8 H
[
* {+ h' M' n/ f. t" ~- Tset 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) * ]5 z' ^: ~- V& Y/ U' h
set k (k + 1), a3 M. z$ X8 t, b" k* C* \& q& l* p
]
: Q6 I. A' m# ~4 i2 A: t8 ~, ]0 Kset [local-reputation] of myself (local)
0 [5 h* s3 D- b; p- R: Zend
  ~! }+ M2 F5 N* q  y8 K  R* Y0 M
" n0 C* R6 Z' I2 q0 Zto update-neighbor-total
: Q/ s) P' u! R4 u$ [1 A( J8 a
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
# k: w+ P6 K2 S. E, f) {0 K/ M; i! Z  @( A0 g4 @& n+ k1 G

$ d4 |" X  M) e. T2 S/ W. q, yend/ ]) H0 n8 K& F; v' F6 i

- G( Q: B5 |" ^! }' _; ]& rto update-credibility-ijl
1 |: I! ]0 I+ [
6 K/ z3 w" Q1 t& X, U! h) @;;
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。$ |1 F0 K3 D, `: p( n2 P6 b
let l 0
$ p( j1 E+ b' C" B) f' v# Mwhile[ l < people ]* y. r7 M* e3 h1 N9 D
;;
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
4 t, X) I) F: t6 L& l[$ M) w/ A) u! ~% G9 p& ^
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
& D8 l' L6 y) M6 n; Eif (trade-record-one-j-l-len > 3)
7 w* z! l& X: y[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-one9 V: W, P# v0 n# M; D/ X. }* I
let i 3- ~3 i, Z" T/ }
let sum-time 01 N, w& \2 v7 N; g: ^
while[i < trade-record-one-len]1 _" e0 G5 ]% v, B& }4 h6 N
[$ v* J. t0 b6 L, n; I0 v
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
- }+ c9 t# p5 V9 e3 d* m" ]( }set i
5 A& i) D+ J# M" F+ |7 ?( i + 1)

  }. b5 k# F8 O- X, V4 s4 E]
0 G9 h3 M; d& j' olet credibility-i-j-l 0
! K: {/ k6 X" ~;;i
评价(jjl的评价)) c9 F+ h/ ^4 z4 s' Z! W, V
let j 3
4 m/ m* R  D1 b1 q+ elet k 4
" c& Y" e: G. W; q: ~" R+ Pwhile[j < trade-record-one-len]) y1 R: _' a( x. E
[) o; A- r/ {: }
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
. |; F9 w8 C1 k" v. rset 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)9 V- H* r$ c- v8 m
set j
2 b4 k  A" S2 o; `" ^7 ?- p3 i( j + 1)
- y. S1 H2 T" @
]
8 q9 M% `0 i* |. y! D& L0 [2 N) Nset [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 ))
1 q9 B. h: @; Y1 \0 d
6 h! q- _) s( |3 g6 Z
  y4 ^$ F0 j; G( o8 Y# g8 ]' E
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))) j$ J* p0 `+ `8 N, s
;;
及时更新il的评价质量的评价
8 R0 Z7 Y+ K6 Z2 X2 v9 L3 U* Iset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
* c6 i, A- ~+ X( s* E) O2 cset l (l + 1)
6 z2 R2 q0 _! A- @3 L9 _]8 B+ m& X7 `3 L5 t8 l+ \) X
end9 E9 E" T5 O3 E1 J3 O8 ~

0 l& C* Q% B3 H  Y, a' [5 U/ Kto update-credibility-list% c/ W/ l" N5 k  P
let i 03 u1 S; P9 p" C; j$ [
while[i < people]
: h. Y/ s4 c: J/ v) K[. k' x# [8 X) J) y1 w2 u- d) z
let j 0
9 X5 \8 _( a+ x0 T, ilet note 0
3 n; o4 x; L  `+ f. |, O$ p" ^let k 0
( ~" V; k+ D  p1 N;;
计作出过评价的邻居节点的数目
' s2 L/ E) ~. ?+ X3 u! C6 a* nwhile[j < people]9 |6 ]6 O  R/ Y1 \
[
; y& x3 F1 M) `: M8 L  Aif (item j( [credibility] of turtle (i + 1)) != -1)
: @' D( [0 \6 L% F* G  u$ S: r;;
判断是否给本turtle的评价质量做出过评价的节点+ n/ {, C$ }/ O* a+ p* j3 j7 ~" H( k
[set note (note + item j ([credibility]of turtle (i + 1)))
% J2 A7 @. w" u) `;;*(exp (-(people - 2)))/(people - 2))]
7 ^  Y+ a  X: c: j0 Q
set k (k + 1); m" K) ]0 E) h7 b7 q8 G$ v
]
. @7 n/ Y- F/ sset j (j + 1)# r! G3 I9 R$ t( H7 t
]
+ _' y  I4 K2 J. I, O$ @set note (note *(exp (- (1 / k)))/ k)
) a( g- u: _4 r9 `8 P. f9 ?. Vset credibility-list (replace-item i credibility-list note)& q+ ?1 ^1 Q; T# s# m
set i (i + 1)5 v2 v, U! ~8 a  W) c/ u: x
]/ C7 b" G, T; v  ]" _* K* R
end4 h+ C, z9 p; V- o" P5 J

8 Q* V% O+ g' y! q3 v" Lto update-global-reputation-list, {, f3 R( V7 f) Y% S  |/ [
let j 0
4 D$ ]$ @: F) M1 Qwhile[j < people]
/ m. g& k' L  b5 j7 S4 O6 n[
  L0 p8 r7 }, t; w+ E- ?let new 0
% B7 f9 Z, J% D3 P& F& F; c;;
暂存新的一个全局声誉
3 m3 ^5 k0 P  t4 Alet i 0
& |! ]8 e6 H/ S6 z5 z$ {5 w( Olet sum-money 0
& K% a, s; a6 w( ^7 y4 mlet credibility-money 0
0 ^' z9 a- K1 y( G5 h" Gwhile [i < people]
5 `4 |) x/ }  P4 c* H[% }, z. z3 |: e$ |( {% D+ U
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
4 }7 |% }! w- fset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))% ~+ }- g4 G7 r8 Q
set i (i + 1)
8 ^' Z& A- L7 F3 |, a. v]/ P- ^( f2 t; v* S! n
let k 0
( k& J! ]8 C4 n6 W: c. L/ A  Rlet new1 0- p/ z, V  F- O) ^$ _
while [k < people]4 F+ |) e, \1 H: E
[
" h1 `! h& b" P; y% u3 f7 ]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)
6 S6 Z/ s" ^2 d! \) ^$ y9 Tset k (k + 1)
1 o3 s6 }3 K  _- H" o2 F* A]+ D' J: c7 e3 K
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
4 w' i5 w3 r; bset global-reputation-list (replace-item j global-reputation-list new)& w% f# B; {& _4 v
set j (j + 1)* o& S+ L! Q8 Y9 |* M; O- M
]$ _# {3 L& v$ q* D+ {2 Q
end
' j7 [0 P9 a2 E
* ]1 [4 D( \# @9 H; X3 R% |5 v: ?6 a6 E
8 j% k1 y: m2 T1 J+ V* X
to get-color% }4 j8 s+ Y6 j" q# ~2 Y$ ]

' r$ q# r' }! N0 v/ F( T7 A' }set color blue

$ H6 d/ _( r/ gend
7 \  `) a" x( i% ~! T2 B' U" I- |; m% S) e! }
to poll-class5 v1 B: d* V9 j1 B& X
end) t4 V* d1 t' y
8 I  [+ ^% R& h3 F( }- _( r
to setup-plot1
' W: w; u' f6 a, c6 s+ {
' f2 {+ I$ |+ ^0 p6 Aset-current-plot "Trends-of-Local-reputation"
/ L  a: x( ?8 B. `# v
* M9 k& [; a2 L. f1 o+ H1 t7 a
set-plot-x-range 0 xmax
( f0 R( p3 n# Y4 V' B, A
' F1 \' U2 B7 C
set-plot-y-range 0.0 ymax

' ]# I5 w4 Q# N# Y& `; C% Yend
3 l) B2 I- v# l  o9 B$ |) L3 d
( p+ `' M. K8 J) G$ u7 e7 _6 O8 T! rto setup-plot2
2 @2 _% `5 W/ Z, t7 F' n+ y8 y2 _. y
! Q( H, J- r( M1 rset-current-plot "Trends-of-global-reputation"
% u" _% V8 \- t. V1 ~' G
, j* X$ W% m* ~! k% w5 i* y% d
set-plot-x-range 0 xmax
1 n1 Q( e2 V3 d6 m

5 q/ A  V4 y1 G% Wset-plot-y-range 0.0 ymax

7 q. f( t3 Y4 L5 yend. j0 J$ R" X- S! H  g

( h0 F1 f$ R! Z1 n8 Zto setup-plot3( H& l& r- X! M! S, O. {9 q& [% g0 {

# q& j$ b' i  x( ]set-current-plot "Trends-of-credibility"
( w' t( y7 ^8 D/ q" [" [# B. k
9 F' p3 ^& e7 W: Q) ~( B
set-plot-x-range 0 xmax
! E0 E. J' C! ~( I1 s
0 O" R0 H% C( p5 n* R0 V
set-plot-y-range 0.0 ymax

+ Q/ d0 e+ K" ?, k: W% X( Bend
: G" c: m- Q0 A5 `1 D  m* B- g9 Q/ I* q& H) s
to do-plots  Z4 ]3 s0 n7 p- n6 \& o4 u
set-current-plot "Trends-of-Local-reputation"
4 @3 K( N; m% `7 ]1 T8 [set-current-plot-pen "Honest service"$ {! ]! @4 W! B8 |# N! R
end
" {; n& J8 q: z9 d
5 j+ z3 W5 u/ m+ f" ~( `6 J[ 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.
1 K6 U& K" j0 A; \! K# L/ S
% F! C. z* \7 t& t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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