设为首页收藏本站

最大的系统仿真与系统优化公益交流社区

 找回密码
 注册

QQ登录

只需一步,快速开始

查看: 11311|回复: 10

[交流] 关于turtle的使用问题

  [复制链接]
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 g( ]' V1 d1 T2 E0 X9 m
to do-business * s; n/ J* B2 |1 c. t6 c" `
rt random 360: K0 }, x# a9 w
fd 1
$ ~- x* e4 Y, [) k  d ifelse(other turtles-here != nobody)[! ]* S$ Q  K+ p# Z: \8 h, \9 ~
   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.! L. V3 L6 @! F, p, ~3 ^* N$ ~
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
# j- M) H% J; Y& E; }  o- E   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer2 \8 Y& x4 E+ U: v
   set [trade-record-one-len] of self length [trade-record-one] of self
- C3 e1 C8 N5 N# L; {  d   set trade-record-current( list (timer) (random money-upper-limit))
% J& v. Q0 `- O  n2 Y' B7 e4 A# @- o  L# n, V' V) i
问题的提示如下:
; W( Y# b; ^7 j, ^# p# h
4 s. W  E/ @8 x: b0 D2 v5 r6 N6 eerror while turtle 50 running OF in procedure DO-BUSINESS# @; t' M1 C" M! k. Z3 p0 h
  called by procedure GO
; Q, e; i( ]7 ]; HOF expected input to be a turtle agentset or turtle but got NOBODY instead.
2 b! Y) k. V! ?: ]6 @1 Q7 Z, Z
(halted running of go)& ~# g; L  Y- A7 L3 Y
" w2 K. Y( C; ]) \8 ^: q  A; Q
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~~+ r/ R) o6 _; J2 U* f8 F
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.

本帖子中包含更多资源

您需要 登录 才可以下载或查看,没有帐号?注册

x

评分

参与人数 1仿真币 +30 +2 收起 理由
booblu + 30 + 2

查看全部评分

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
+ z7 Z9 D5 W+ Q& ~4 t3 dglobals[
  l( h1 g( a& M8 zxmax5 e' G" q& C. s- w! D9 h$ o
ymax3 z! o+ _. Z. u% e! T6 X
global-reputation-list
/ r, _- b- G7 q2 G- b6 C  z3 Y: L5 C, Z+ j( l; ~: B" Q- A, `
;;
每一个turtle的全局声誉都存在此LIST
. D9 r& h. t$ Ecredibility-list) \7 V6 D1 r& w5 R
;;
每一个turtle的评价可信度* ^' O1 Z6 v; C1 c" n, \$ x! S
honest-service% a% i- ]- p5 t% ?
unhonest-service9 j. Y0 V) c& x) A, [
oscillation) a" O4 L& m% \8 }
rand-dynamic5 G5 ~7 M( e$ w
]' D9 c2 N! L& Y8 r: v

  G! p- ^$ O' A* ?: Eturtles-own[
: r: ?8 d9 u) @! U$ c6 Wtrade-record-all0 d2 a& J+ w: S4 v# D
;;a list of lists,
trade-record-one组成$ t" }7 n* g* l- \7 _7 v8 m4 B+ {$ ?
trade-record-one
8 ?* C1 z1 J( E& J0 P;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
" N( b7 u; j6 w
+ _. e. Q! j; I2 C9 u! H;;[
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]]
# @- i# g  x- n' c( K3 q$ Ptrade-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]( A  M0 ~1 J$ ]3 {. u/ `
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  I/ C( ]3 I4 p
neighbor-total$ R/ f8 y* o; U8 n
;;
记录该turtle的邻居节点的数目
5 G+ j2 `$ J6 x/ D. mtrade-time1 r& _. l5 c. o* P
;;
当前发生交易的turtle的交易时间' J) x5 e8 d: n+ `( {/ ~7 Y5 V! Y
appraise-give
) L" X) M! m4 u+ l! _  C' _;;
当前发生交易时给出的评价5 L! d' B6 J. s
appraise-receive7 A- D6 o2 T2 w. k9 n0 N
;;
当前发生交易时收到的评价, j1 W% q( ~+ a6 x. A/ G3 ?
appraise-time# z. N; d1 M0 p( i9 U$ U" Z: |: {+ q
;;
当前发生交易时的评价时间$ I% t, a; e; [* f
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
* s0 b: O) }& w2 vtrade-times-total1 ~& f) ~- o9 Z
;;
与当前turtle的交易总次数" D8 X& a7 S* S4 u$ d# ?5 a$ I$ Y
trade-money-total
) }8 c# ?4 `, j% U# e4 j3 t( m$ C% C;;
与当前turtle的交易总金额
) X/ G; b' U* S" s7 p& Q. C6 O& A* J9 alocal-reputation: S, a3 S+ z+ r6 s" u& |
global-reputation
+ e/ i4 v& }: t( E' Xcredibility
) r: M9 q4 j7 F' `/ R; t;;
评价可信度,每次交易后都需要更新
2 u- E* t7 y! y% Q- S! y! Dcredibility-all
0 a/ W' v( W1 c) s  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- b5 k1 ~5 @! I2 D9 d2 ^
/ f+ _2 }# }8 x3 J, c7 A
;;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
. M+ C' s$ p6 ecredibility-one
; H1 o' t. c2 W& L2 F  Y;;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people4 r8 k3 d0 ~  A" [% a
global-proportion
& c  a" [) \8 r, J$ O# ?% S1 a( Icustomer+ N+ c$ H/ T$ n( ]) T# b
customer-no2 S7 ~" Q" }7 G# d
trust-ok
# Q/ n* `2 M8 d  ttrade-record-one-len;;trade-record-one的长度, N' o9 q$ r, m! `- i- h
]
) n8 x0 A$ Q- X, A: B1 ?/ v& _' }7 q4 A
;;setup procedure
6 w4 [- T' n2 _7 G# W- {
9 m! t4 U6 Z8 V* V7 B/ f+ w+ }to setup, H, @' b0 r0 H8 q  u

! X. E; g5 E+ R" U. j8 gca

. S2 @* f! e+ ]# I: K! G0 m, [$ |1 S. b, j/ k8 k
initialize-settings
; D  A, ^0 P) h% U6 D1 ]/ J
9 i0 ^: O: ~4 l( O& J
crt people [setup-turtles]

9 W+ |; ?2 g4 M  h) P  I1 H, z: @0 H, P5 J! w
reset-timer
0 B( P1 c* N& {0 G

' Y4 }+ b# Y  L3 w" N0 ]poll-class

2 F7 R; E% F1 m
3 D/ o8 _  {- X0 g2 P! s" Ysetup-plots
  s! w0 g& y9 W. Z& n) N

% Y/ F5 u0 v( E9 o+ ido-plots

. j" l& b+ o, w: [& G* [end
, D# q  c$ q4 p4 }
- F; r; i% M* Z) X2 Wto initialize-settings- ]) B6 |3 o  a* |
8 b+ U, R# V7 I. v8 v' C
set global-reputation-list []

/ ~- d9 }) f# O8 J7 L
" Z1 Q5 W( c) B: U( {set credibility-list n-values people [0.5]
2 I9 @' S( ~6 |+ h/ q
# j( e9 j- e9 {+ |/ e$ t1 L
set honest-service 0
/ m. B4 M* k3 n# p7 B; h

; y" [8 g0 ^8 {. sset unhonest-service 0
$ M, V( t2 o# p4 i0 ?8 Q6 X& J

: n& c' ]0 l9 [1 d6 S1 }/ Y: Dset oscillation 0
. x) t: v) U. @
# u9 c. d, v! ~6 e
set rand-dynamic 0
. p3 K3 I6 m9 E1 g
end3 J: {4 F+ h, S
2 G8 n3 i6 G$ B: }1 B: v% B
to setup-turtles 8 g6 s0 l# x0 H% X
set shape "person"
# V: ]$ L$ g) N4 y' c3 rsetxy random-xcor random-ycor
. d8 r6 {' Z) e3 E$ pset trade-record-one []
  T: ]+ ?+ B# i) @& s) \

  T9 s$ B% c" K/ _/ W* Rset trade-record-all n-values people [(list (? + 1) 0 0)]
0 w6 c8 P) Q! F8 A; D) M

8 _6 [: q* X6 lset trade-record-current []
* P0 c& J, r" j" wset credibility-receive []
7 P4 y9 B& b; y- a* T- U! \( oset local-reputation 0.5
$ y6 ]& z/ n: Q5 `* eset neighbor-total 0
3 g& C, V# E8 k2 hset trade-times-total 0
+ H4 L. _7 z" N0 s0 C2 b+ kset trade-money-total 0
! S; e6 f- \% n  |, w6 {set customer nobody7 g. Y4 ~4 Q# {+ f
set credibility-all n-values people [creat-credibility]) D$ \2 k) l' v5 Z0 R
set credibility n-values people [-1]" n0 ]- g6 p* v
get-color
& S3 v! R+ ?3 L! K
3 `9 t3 o$ V# w) u: S/ q
end
$ U  u. O1 [* U6 O2 o; m! H* M3 j5 V' L2 [
to-report creat-credibility
" w0 T% B) M/ ^5 @+ B: N5 ~report n-values people [0.5]: g( Z4 d) `5 ~
end2 C8 ?0 x6 t. ~9 n5 W8 M& H
3 d7 A+ [3 T& [( e$ S! t4 v
to setup-plots
$ e  \/ t& o2 S5 p  Q+ b8 l
; Z/ A% X9 [1 J9 _* xset xmax 30
8 W, h5 I5 H+ O2 x1 K$ c

' G) u8 u  B% y1 ?9 x; Iset ymax 1.0

' J, @) k& q4 l9 [" }8 ?3 |
- `9 Q$ X: L$ ^- ?" d: g$ Mclear-all-plots
9 ?  |3 S+ Z6 E0 h
+ }7 m- e+ C0 j
setup-plot1

  H' ?9 M' O# A; y. t" f
- I* V2 {& @' n, Tsetup-plot2

7 f3 C8 @6 @0 B3 X. t" O
" P/ Q3 d0 a8 ]setup-plot3
8 y" a# L0 a; v4 i" t. y
end: ]/ s  _' o. w5 ?' X* W
+ U$ g! `2 ~7 Y8 ]
;;run time procedures. N" b& i7 ~" q8 J& ^

& w9 a# H/ b+ G) p& F7 ^( fto go+ }4 C6 I0 x, {2 @0 u7 w4 n$ _( w

+ U/ e0 b" ?8 J% c! eask turtles [do-business]

( {7 \" U# p5 z/ _end
! l* r! y$ b' Q. e" l. p9 q5 S8 O; X
5 f, ~6 v% E3 F% m: o0 _! vto do-business
7 t" ^1 K' V/ R8 n- Z

0 n9 y& x' \  W! \% g7 ~6 `8 J; ~5 ]
rt random 360

+ H6 C- A. X; \; A+ v3 O, i
) Y$ B% u9 f; q* r/ A7 p1 xfd 1
& u9 U) e7 {4 ~$ F' G# w

& w" C3 r# w& Kifelse(other turtles-here != nobody)[
1 q3 N& V9 |% \! ]! M/ s  X
+ L4 \: ^" P6 I9 |) l7 l4 ^
set customer one-of other turtles-here

) n3 F. x8 f$ a7 ^$ b/ m0 d) |- Q' i4 V; V: z5 H
;; set [customer] of customer myself

4 q% c8 K2 C5 i0 c
5 h+ [: e' ~5 {. K2 yset [trade-record-one] of self item (([who] of customer) - 1)8 o2 v5 S" g9 c1 Z- o4 ?0 q0 K
[trade-record-all]of self
* s2 e4 ?3 |3 I! B6 Z8 ~;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

$ u# H) o& H* O( M2 w9 j( L5 E7 A( X* V$ l+ g9 H; B' h
set [trade-record-one] of customer item (([who] of self) - 1)
* q% V# J- b  S, h  G% h0 p* x[trade-record-all]of customer
3 U4 @$ q8 D, i. L( B' S  p; o  W

/ f  u+ s! d$ M; Sset [trade-record-one-len] of self length [trade-record-one] of self

$ c3 }8 R/ R6 w# v% L$ |. K4 F/ ?4 W- J* |6 w" i& d
set trade-record-current( list (timer) (random money-upper-limit))
1 \% C- G$ r+ R& [

1 u0 b0 ~; k1 F0 Jask self [do-trust]5 `/ {2 p9 t+ W6 }6 O' G% d% ?
;;
先求ij的信任度
) r8 g* Z4 I( A& N3 ]7 Z6 a2 n
' P4 [; g6 V+ ?  M$ ~" s7 `" zif ([trust-ok] of self)
/ X7 l: k/ ?+ x& Y; _2 @$ ~8 K+ q;;
根据ij的信任度来决定是否与j进行交易[+ x# A5 I" Z3 s* M  y
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself7 G6 A1 O5 E5 t2 s
1 i& G5 U- ]) b& }
[
2 @' i6 v4 a. _9 q; O9 Q

) t( p% \, _- {# Ddo-trade
) ]# @8 j" X  j2 x
& ]3 a: v9 Z, d. M( e8 a, @
update-credibility-ijl

# H2 ^) |9 S* b9 I7 F: L
; j6 o5 p) \( o) z* l8 A9 ^update-credibility-list
" L: E2 L- v; P) D+ H. H

' n) J/ n* I0 I& E: J2 [3 n
, ^4 e/ Q7 N, N4 D$ m' H) fupdate-global-reputation-list
, m& w. a: {; h* w' U7 u( E" C
1 v; ?; Q- k" n3 I
poll-class

: H5 P6 o; K/ o: {# N& T2 ]# i1 w' n9 a5 Y
get-color
* W- E$ _# J8 \, a7 u0 S5 p
' _5 l, ?8 \+ @! g- j) F
]]; L" ]  U7 D5 M/ s' n# m2 c

4 i% ^! c+ y  T' U8 v, a;;
如果所得的信任度满足条件,则进行交易
* D8 I4 h9 c& b1 w# K! J7 A5 b6 Z$ j
[

6 O4 h' ]& R- a# J2 p4 o6 G
& K# y2 Y4 P% d- |& d& M# `. Crt random 360
4 h" R9 ~, A4 }2 s
' a) q. ?0 |; s9 D, K  t# U
fd 1

6 {2 I' e5 j6 ~4 F: h
9 g3 U$ |5 A0 h7 N, j]

7 Z( B/ R6 f* S) _& _) }5 O6 D) [" `4 |9 h
end

9 F* |* r8 _2 Z) g: d0 C4 k" }8 B, [' y  Y5 K6 ^
to do-trust
; O8 }* h  R+ B, j7 ?. S( Mset trust-ok False/ p. N  E8 ~6 k+ k+ q. L

7 D6 k! E; e6 p7 ^# |

* _# e2 t) T* Q. F/ \let max-trade-times 0
: p: k3 ]: C7 h% qforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]. i& V% y" Z: X7 A
let max-trade-money 0
4 K$ I, S6 q7 c, {foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
( P" S1 S! v$ E8 F  t. k0 mlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
3 H4 j# k# k. g6 X1 y" x
6 N9 Q) C' f( e0 L
# Z8 B, k8 v2 M8 f  A  V
get-global-proportion' K: b# W/ V4 O3 C
let trust-value# R4 [+ ^; N  m+ ~% }5 [: U- K
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)
& X. R# P+ K6 a+ @9 G2 ], p: l
if(trust-value > trade-trust-value)4 j' f/ x$ }. L$ e
[set trust-ok true]
3 Q, T, o8 z9 }2 P/ X, }end- I" ^$ A# j" ^

4 c& A, J: x9 Zto get-global-proportion/ t* \9 S; M6 j8 l6 G: h
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)/ z. @* T& ^9 c  P3 B4 T2 X7 A
[set global-proportion 0]" `* a% [  U& T" V- F4 q: u5 r
[let i 0
, U5 R! Q  N* V. ~" [let sum-money 0
# O- O& z0 u; {  z+ |( Hwhile[ i < people]9 n* r" R+ f  M  P4 ]0 R
[
$ M1 L2 L& m1 B: D6 T# W$ }  H! r& Lif( length (item i
; O( ?3 H; P: o2 f. i[trade-record-all] of customer) > 3 )

% R/ c( F" l9 W9 a[
4 Q2 Q( Y- a# D( Uset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
- Q4 Z6 ~' P. T+ c+ E& \]$ G" [! d. r  ]- b
]
, j+ {: R2 ^# W: b7 slet j 0- l- U: Q8 Q+ U5 e. A0 D
let note 0- E: v- B" w% ^2 A6 [/ f+ @3 u
while[ j < people]  N3 C. u8 q- W# H
[
( h/ R( w! o* a' i- u8 G6 o' g6 r, Z* xif( length (item i  g2 q7 Q) [: |4 x7 g+ r1 j
[trade-record-all] of customer) > 3 )

: ]" C" P  ^9 X1 t7 b& |' V[
3 e8 k" U" [( H7 q0 Q, x) r$ gifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
! w, ^; S* j) g" _2 d5 p/ H0 U[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
9 t" e/ o/ I; V$ X6 C[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]: I9 ~. g" W: C: G, [$ H
]
* P& `# ]6 f# k], C6 r" P) U9 Y+ N: `4 j
set global-proportion note9 g( |) S, C5 |
]& I2 P0 U! p/ `9 Q
end
$ B, \# L9 t! [, `& n) b4 G9 n) D7 |/ a1 ]& f, a* q
to do-trade9 w8 I  t* M7 r" w
;;
这个过程实际上是给双方作出评价的过程
: l6 m: ]/ B# v7 aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价7 O' v. g* ~& ^' E/ A
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
3 g7 p5 E5 D8 `. x  E; O8 Pset trade-record-current lput(timer) trade-record-current! h( X: R7 v+ h' r
;;
评价时间# }1 j0 `) S% _5 Y. n
ask myself [' B7 r0 I; _0 x0 L' p4 ]
update-local-reputation
4 }" x6 t/ M# p6 Y+ T- V1 P* oset trade-record-current lput([local-reputation] of myself) trade-record-current- W0 }9 Y/ [; L0 d
]
( e) @, T; A5 Uset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself/ z7 d2 Q& e3 K- u' q3 r8 f
;;
将此次交易的记录加入到trade-record-one; @# y* \, o' [5 M) `+ ]
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)1 {% K7 D: r! J; ?1 {, s
let note (item 2 trade-record-current )
1 f% ~7 x( L1 _4 r3 z  [set trade-record-current
- q( ^! D" ^& g7 }; W+ a' d+ P(replace-item 2 trade-record-current (item 3 trade-record-current))
$ P, u+ K  H. T& h- S, i
set trade-record-current+ K5 u$ @" `; W* P
(replace-item 3 trade-record-current note)
0 J) f: m7 g1 V* {" ]. R! O4 ^/ b7 E1 ]) b3 i$ a
0 s: W- v  E3 F8 a0 p
ask customer [2 `. c$ y: S9 z3 y0 |
update-local-reputation5 `6 ^, a' _1 `0 h3 t1 K3 Q
set trade-record-current
& j; N- r/ k6 h5 O6 q5 z(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

6 P* U: \8 r( I7 B! a$ r2 x7 W]! e. O( C$ h! y

8 U0 K$ n' _: U

- Y% j7 u; ?9 i" x$ |5 U5 Xset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer* |* E* M4 H& }5 b7 I" i
8 l: A* u) M  z8 z/ K: o( R
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
. \/ v$ i# _6 E4 v  ^4 h# p: k;;
将此次交易的记录加入到customertrade-record-all3 P( q, E2 h; ^/ K/ U& j0 B& |
end" b  R7 N! ?) n  a$ W1 E) @

# d' d5 E! Z1 |( xto update-local-reputation0 e$ C/ l/ C1 V, Q% Q% l* V
set [trade-record-one-len] of myself length [trade-record-one] of myself& x! K5 Z% |$ I  t

4 J  |# G* G4 t2 R7 H2 @( `# s) U6 h4 u, N4 q6 B! j
;;if [trade-record-one-len] of myself > 3
3 F4 p3 r5 O! \0 d/ B
update-neighbor-total
; c3 f6 x; n" e( d;;
更新邻居节点的数目,在此进行% n0 k! M; X% D
let i 3
* b' O1 l$ c3 Alet sum-time 0
/ h; P+ {7 v' o# d- d9 Swhile[i < [trade-record-one-len] of myself]
% u+ D7 o5 L8 }+ |  D: x* A- c[
7 t# \/ J. N$ ]/ W+ \' Rset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )% n1 o3 y6 p* y/ E- x/ P  O
set i7 L9 V( h9 e- e, [
( i + 1)

5 f. t( q. f+ a+ H) u3 a]
  k8 w! S" i/ g8 s$ X4 [+ d9 Klet j 3
6 j) ~; ?3 \; S5 M! C. i; ^let sum-money 0" n/ u9 e! ~- y0 `6 T( L
while[j < [trade-record-one-len] of myself]
& ?+ Q) {# ~7 I  `; y8 E- l[
3 A  N0 w' d7 L/ {) D( W5 N5 uset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
; c$ _* T) \8 j9 ~$ Cset j
' \' L5 V" G; a  k0 M/ L( j + 1)

$ U1 C  r0 ^7 ]6 b- h- y7 }]4 y8 [/ s1 h& |& f
let k 3: w2 ^$ K  f) x. @. Y5 \
let power 00 G/ R; [- @. W8 A2 B$ A
let local 0, r4 {" V( C: T$ L7 |# `
while [k <[trade-record-one-len] of myself]
" k# u# B/ ?; G. ], t[
9 x- T) l% Z4 c' a# A1 `- K. l' ]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) " r% v: m- `& m( K
set k (k + 1)7 G. ^2 v# L% p# T9 M
]6 i# i9 {, W: {0 K8 {: r: P  X; ~
set [local-reputation] of myself (local)
7 \4 c% W$ r" v3 F" k, zend, n; C+ B5 {$ p7 p# B, h

4 X( \- C* C: n( ito update-neighbor-total, v4 y6 H4 @1 m- b' z2 k

1 W- U9 e8 }1 zif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]5 P- \/ v0 K4 y, \' F. r0 h6 g7 ?) L% F# `
3 `: ]. j6 F5 V/ |7 U0 K4 B6 ^3 d2 D

& a( I/ j  J# Dend/ m$ W4 J  p- f7 I

4 ~* \; r! n; c: ?' d6 Z1 Bto update-credibility-ijl - \4 c( Q' i4 G

% p" K6 E3 b. x* o$ K;;
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。: X# e( s$ x1 ~
let l 0" T; _7 w( z. Y& P3 T8 r6 p
while[ l < people ]
9 D/ A$ y; P( I  f' {" j6 w) Y# k;;
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
3 }, G, e. O$ ]) Q9 _( S0 `' {+ L[" ^1 ^, n. \4 [5 T+ W  }* d0 u
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
: X" w0 F2 k3 ]% U, x8 aif (trade-record-one-j-l-len > 3)- S8 Z' a4 U+ Q$ V+ X
[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-one3 ^7 L$ W5 V9 w, f6 M8 |! u0 c
let i 3
2 `& p4 j% y* H- tlet sum-time 0
* S  v6 P1 {/ O6 t* ~2 twhile[i < trade-record-one-len]: a, b- Y; V7 @1 m
[. B0 d; D4 j  o8 J$ ]: f
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ), L8 p' t2 Q" e
set i
: Q1 ~8 u8 {* g( i + 1)

/ A- I- e  D: ?8 l& H]
# H7 V/ |& o5 q/ N1 `let credibility-i-j-l 0; g& ~) w+ d- n
;;i
评价(jjl的评价)
9 o& ]5 s2 \! z6 a$ s" plet j 3
) ?7 M% Q# x1 D* }4 K* ~/ tlet k 42 Z- [# g1 D# D6 `8 l: C
while[j < trade-record-one-len]+ `  z0 e7 H1 _
[  \2 J; o: g% O# c; L) C' \
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+ [- N! M. ^5 @" S3 q, i+ d1 F
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)# o# ?) a3 U: l5 V8 t% a2 X
set j
; m; o9 ^: |3 l! M: y& P7 ?2 M( j + 1)
0 Y- T' j% g" [; V6 c: N
]7 s( s0 ^% O+ q' f) _
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 ))+ b, Q8 H" ^3 a5 L5 q- [

' h; _9 P8 A1 c. e3 C; O
, W$ k, D: _. i; T% Z* u
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))- Y5 ~0 R7 P, s9 n' Y0 Q3 `
;;
及时更新il的评价质量的评价) }# Y8 U* R0 ?' ~+ h! a. }, @
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]$ s+ e) q7 R: o. t" y
set l (l + 1)! I. b+ y2 ?7 }
]- w9 m* d% v  z  a$ C) m9 I+ r
end; T/ L* X! C) \# C* `
$ j! Y* m4 F4 b( `" B; M: ~
to update-credibility-list
4 {' ?1 j( `/ Y( I) K4 {4 Alet i 03 @: D4 U0 I+ ^& s6 ?/ {
while[i < people]- T0 H& [+ F( u0 H4 ]
[$ s1 W# Y2 R1 ^9 l
let j 0* m/ z2 E1 I& B0 I3 g
let note 04 G, ~) k& H$ T2 X& R; B
let k 0. Q/ w7 @- O8 j
;;
计作出过评价的邻居节点的数目
$ d* i' I2 A$ pwhile[j < people]
3 g+ p5 M; A# n' a! t[
" O- c% }5 i3 v! H, i: Z1 H/ Xif (item j( [credibility] of turtle (i + 1)) != -1)  A6 ]5 }9 `: I  ~  j
;;
判断是否给本turtle的评价质量做出过评价的节点
8 F3 K# G& V4 C% t; U[set note (note + item j ([credibility]of turtle (i + 1)))
2 |2 |0 m7 w+ E. w/ a. c' _;;*(exp (-(people - 2)))/(people - 2))]

1 y! }4 R: A6 D$ {set k (k + 1)6 B: w2 n3 M5 M
]
+ x" z/ V  m5 [& H% |: A1 S7 mset j (j + 1)
" a' y3 X- n  w' |5 ?]
4 \* m" E( a9 i1 Iset note (note *(exp (- (1 / k)))/ k)& H7 j& k0 u4 q
set credibility-list (replace-item i credibility-list note)
/ I* _  ~' T! y; L+ ]+ sset i (i + 1): M# R* J+ e  n. F+ S# S
]
# C$ s& g. k3 C% N# G7 t* {* [, oend
/ A8 o1 l5 _: i6 `! d
6 V- n" ~. n! F6 Q% q' B$ C" Gto update-global-reputation-list
4 u/ _4 w% H% K& Hlet j 0
- s6 d& N8 i1 o. q$ Y3 g4 O5 wwhile[j < people]
, }: p! s: {6 m, L[
( \% `. ^4 d. X7 ~let new 01 k7 U; N, M7 E* G
;;
暂存新的一个全局声誉- e/ U. g9 S( m5 p
let i 0& e& {* A9 M+ {) x
let sum-money 0
. }8 O. P% N+ Z7 e* h5 ]9 t9 z) Jlet credibility-money 0) V4 X: s! k" a: D
while [i < people]
# z; K  P0 n* h  E! b[
" o% r0 a2 _: n$ C: v' Q0 l' Z% Uset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))/ D$ J3 h. l; T
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))$ e9 d! J0 B  w( y" X- x: \
set i (i + 1)
2 }& @. g& S' C. E1 p& n* `]
( `) b8 G  S/ X% xlet k 0
) p5 K  k6 H8 M. ~5 K2 _let new1 0) `, A& p! ~* r. f8 O$ p
while [k < people]
  k& U4 i# N' n2 N8 ^$ a6 k[
# B  O1 @8 t- M" t0 d6 @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)
; L- N# u/ L5 F1 O9 x* H2 \- cset k (k + 1)# q; H' W8 X  _& w# I& A5 `
]* Y1 f+ [4 ^3 @$ b( E7 E
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
' m/ }, A1 ]$ L( G$ U, aset global-reputation-list (replace-item j global-reputation-list new)2 c! C# J9 }& e, w3 x3 X& w
set j (j + 1)8 ?0 \* V7 s- D2 `& v
]' f: h5 C" {) @$ Y$ d2 s* n
end5 M0 D+ h  k5 |3 _' J! r

8 {* p( u. D. V. A$ _' x& j# `% F
) w. K3 A! ^, E6 y( m. n$ {( U) D1 \) v- w5 Q$ `5 Z+ Y) K. E
to get-color
' B, B- n" {* H( c, [( Q: P, d
3 _5 X: ^2 N1 f6 y0 |9 p2 l% vset color blue

- F) k5 R4 v/ d% L6 \& M5 a* qend7 E0 |. D) g% U6 W% ^; w  {0 k1 R) R

* L# p& S' M( k. ]* ?  r% o5 D4 Dto poll-class5 p1 E/ |) g+ s0 W$ d$ d
end& F! z  C4 _& k  s$ I

' m0 ^: q4 B  O: zto setup-plot1
: X9 x9 v5 J/ T) {3 J
% t$ f0 W+ i8 i& j6 B/ ^set-current-plot "Trends-of-Local-reputation"

  z$ K. ~$ _, ^9 }0 u/ b
. D0 O( y2 P3 T0 b0 b: Pset-plot-x-range 0 xmax
% c- Z3 L* F7 d& s  z( p) M

2 ^, }, h$ g' d) wset-plot-y-range 0.0 ymax

! D- P2 k/ I7 b% [) p. o0 A( x6 C$ kend% o! ~% @: U, @, [! J" T
4 c/ c) K5 V0 O. X
to setup-plot2
( ]) n/ C% b$ L. ?
4 j. {* ~/ Q8 P: m  I2 Hset-current-plot "Trends-of-global-reputation"

! F- @! y$ v/ K' o. @- O1 ~0 c+ q7 C# g% P' `9 h6 `& Z
set-plot-x-range 0 xmax
1 i9 Q. Z) b, I  u& v6 k. p1 P

' a# I  ~2 u+ Q- s4 w  ?set-plot-y-range 0.0 ymax

3 Q& l3 M6 W( Q6 I% xend/ N- M4 F& I7 v# `8 J" `" l
: K  c5 S, R. t7 [# A( h- x4 U
to setup-plot38 E' A3 E0 `1 G  H) }- `4 I. g
- d# h$ L3 R- l" A- c+ N+ X
set-current-plot "Trends-of-credibility"
+ l' f7 S! e' p7 W0 B  A( K
5 b, J2 B! C# L$ N! p& D6 G1 E
set-plot-x-range 0 xmax

* p' [6 O4 L8 f' g0 b
# P) ?) G' G+ q. r/ cset-plot-y-range 0.0 ymax

, i) j$ F! V1 f9 }5 G5 kend
1 q" `: H7 S- G0 @) \8 F8 e* h5 I4 p7 \- L
to do-plots" f3 V8 e- g9 O" {6 J* ~
set-current-plot "Trends-of-Local-reputation"
3 M' D7 b- y2 k+ Q; _set-current-plot-pen "Honest service"
) f$ l% E9 L7 cend
: t4 ]  _' `8 d' T* O  f( {0 c7 B1 o+ h4 R7 z) O$ w6 u
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

本帖子中包含更多资源

您需要 登录 才可以下载或查看,没有帐号?注册

x
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.
+ ]$ l  C; {5 j# t+ {1 `
1 S% H6 \" s4 O) v% z8 i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?
您需要登录后才可以回帖 登录 | 注册

本版积分规则

QQ|Archiver|手机版|SimulWay 道于仿真   

GMT+8, 2026-1-12 20:59 , Processed in 0.027247 second(s), 17 queries .

Powered by Discuz! X3.4 Licensed

© 2001-2017 Comsenz Inc.

快速回复 返回顶部 返回列表