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: 12964|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:5 O- _/ s1 g5 j( v% t
to do-business 7 q+ R5 V, }- a
rt random 360
  t, ^: ?4 V; G6 a fd 1
( e1 Q4 z" g: A9 M0 o- n ifelse(other turtles-here != nobody)[. @# ?  \: \( S8 `
   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.7 M) N, A3 b( V
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
6 M+ z/ i8 |+ j3 \; {7 x* }   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer0 ~3 m0 v' i+ h  y% _7 k' _
   set [trade-record-one-len] of self length [trade-record-one] of self
1 j- ?3 @1 N. M: v- B# {$ i   set trade-record-current( list (timer) (random money-upper-limit))
5 ^6 A  a; q3 _/ S5 n
# K* w! T; g& \4 \! ]问题的提示如下:
, ~3 C/ ^( x9 m: f6 B. {) B/ x4 `4 L! K/ b( ^9 W1 g1 a6 q8 M
error while turtle 50 running OF in procedure DO-BUSINESS* i$ s# _* k0 E  w' @4 a7 B
  called by procedure GO4 L; x4 V6 [$ P
OF expected input to be a turtle agentset or turtle but got NOBODY instead., ?. o& }# Z; E# }; p7 F+ v
(halted running of go)2 H$ w8 ~* d* n+ O" O9 ~0 ^5 A

$ {2 k! n5 r. x6 i. c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~~" }- [' W9 P3 t3 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0 c, ~* R2 V6 Y/ p5 ~
globals[; H/ F5 g% e) Z8 z6 }) a
xmax
4 {- G" C! z/ l8 T' ~ymax$ N& n: j, t% q6 B  Y
global-reputation-list0 N0 c" v) v' Z2 s* p. p' n( E0 {$ [

* P0 m! t( P9 {7 Y# k$ |# _; T;;
每一个turtle的全局声誉都存在此LIST6 ^8 G' n/ \4 D' X" Z/ g5 g
credibility-list
3 h$ B. A4 U* H. U;;
每一个turtle的评价可信度# H; E' i7 C: ^- {9 X
honest-service
! `/ `: j+ j, Bunhonest-service
3 C' r& l9 P. I& I- joscillation' n# ^9 g) T" f( T$ K5 X4 i+ e
rand-dynamic
0 }6 J' Y* `4 m- \! R! n]
# `" N! v$ A% C
: d$ N' y% |7 x4 g8 `turtles-own[8 @' b) f. r4 I
trade-record-all
2 Z( Q! _. L, ^;;a list of lists,
trade-record-one组成
, g9 L, z4 u0 j# s* {5 ytrade-record-one
, `) U1 }$ x: t+ s/ W; a9 P, V;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录- P% V$ v. c9 k% ?3 {
) B8 r2 c* I' Z2 \! G
;;[
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]]( U# ~, Y  C; |; V! w4 n
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]
7 x# Z- ~! u5 \  O8 |. y' zcredibility-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& e/ c! L! s, I
neighbor-total
" O( d1 j" U9 D: k. l/ ?2 c;;
记录该turtle的邻居节点的数目
6 j/ y$ O3 u) l' q; ztrade-time# _6 l( Y3 |* m$ w# B
;;
当前发生交易的turtle的交易时间5 k/ v! C3 d# b: Z! Z0 F& v" i/ }
appraise-give
* S1 Y. e+ G, a* p' ?; Y% ~& I8 _- A;;
当前发生交易时给出的评价, O5 A' r9 S; i% R
appraise-receive, I! \5 U' [( E5 L
;;
当前发生交易时收到的评价( O( x2 |# n6 ~7 R1 |2 _! y
appraise-time# `) r' U; w# b: p) P3 b( }
;;
当前发生交易时的评价时间+ c, K/ s$ X5 u9 l' G* Z6 v
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
: g( B- [% U* a& Y1 @# z% O; F5 l3 ]trade-times-total
8 ]+ a& U% I) t, D" B;;
与当前turtle的交易总次数
! V) G: R, z# }* `trade-money-total" b0 [- e1 [  `9 t2 e; S
;;
与当前turtle的交易总金额
% X" ?* y$ T; D4 I) e' w) x) k8 l) Ilocal-reputation8 d, k( E. f, C7 g- s
global-reputation- W- Q- h4 I' x3 j9 d2 C; I
credibility
* I- K/ t- ^# t1 u( T;;
评价可信度,每次交易后都需要更新0 s" o& v# [+ D: N
credibility-all
$ N" ~9 K- {* |/ Q8 I9 Z4 `  V. S/ `;;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
$ Y( v; E9 K1 [, O9 h' U5 X2 y/ ~- T( w4 w; |& p1 Z( G/ 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( H* e: R( X6 F7 V5 x3 v
credibility-one. i5 D, m2 h( E$ D' T( z4 [$ ]
;;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
* |! z5 r" Y* O8 \8 v/ l7 rglobal-proportion& a( y5 L6 T& z7 Z# D9 {
customer( q+ i1 m8 G2 C
customer-no
0 C, k( a. a( U/ [trust-ok
- g% g, D3 @$ Z/ c& ]) ntrade-record-one-len;;trade-record-one的长度# i2 X1 s1 B. S* @8 P3 W
]0 Z$ E8 u, _' k7 x1 N# S
+ i# x: E: y  c& J
;;setup procedure
( w5 l- d: H+ u- H; U- z
' J2 }0 V: z. V- Z% `8 M* O" q9 J. @to setup2 f) I; D# J  d2 q# M1 T

% w3 E$ j' L6 \3 \ca
  T' G* q' v, D2 v) f# ?/ t+ p

7 u2 j  ^: P- e$ S& l7 U- I9 [4 v  Iinitialize-settings
2 s' l1 Z# t# b& [

" b2 J" N+ ?/ d5 Ncrt people [setup-turtles]
6 ^! W5 ^% K% I4 k  ^0 Q* e% q0 v4 P

3 j* ]6 h6 _2 \- N* _reset-timer

! x; Q* b+ @! o! q& m* [! t& n
& a0 B0 u. m) c. p! z; N8 Q8 M5 {% Tpoll-class
; o5 u: |7 y6 |

  A0 S. t6 y; j  \& ^setup-plots

5 M& @! B$ I) S4 Y+ C+ m1 D2 J) o! d
/ B$ Y) X% @8 Cdo-plots
6 P8 `( h* C. j7 Z: Y
end% \/ m3 t+ B* Q$ K4 k
6 y* Q' V% S. z. F9 ?
to initialize-settings
4 o- d) T4 d& h1 v! X/ Z+ C- r3 Y8 O& m3 t8 k3 l  Y1 `
set global-reputation-list []
1 q5 g1 [+ X( ~) B% [

) i2 P* Z" w6 Z2 H$ Y  W7 pset credibility-list n-values people [0.5]
( H( I+ Q3 m: Y; K3 p% y# S0 L
2 t2 k/ v2 i: f3 q6 F* D
set honest-service 0
2 g( X$ b8 d; F5 t

1 i3 H2 _8 N; {) f$ X/ Z5 Iset unhonest-service 0

& j0 e7 c4 b- b4 D# n1 [6 @  P
& o& [; _4 b+ k  gset oscillation 0
4 e8 }9 s! H+ i" r6 O- E# [7 H' Q

/ P$ l! h+ X: ^6 W, pset rand-dynamic 0
3 u; m- O; J8 q1 {" ]
end  t' {) C+ {8 a, M/ n8 N8 W: K+ k: s

9 B: @, ^+ b4 Z; Z. q6 q$ ?6 U/ Jto setup-turtles
2 U1 M+ u4 M3 ^* n* t+ Lset shape "person"/ \' N* H; e5 u( s3 T- p" m
setxy random-xcor random-ycor- h. C+ Z) _1 b1 ?- l% e
set trade-record-one []
3 n5 }0 V# e0 C8 Z2 ^" A
( V1 B+ ^, |6 ?
set trade-record-all n-values people [(list (? + 1) 0 0)]
* h1 t$ q" v# {  H5 g* q

, D. _4 q& h) T; Q! q& Aset trade-record-current []+ P( o, o2 E7 G
set credibility-receive []" e3 v& A* Y4 z$ l
set local-reputation 0.5+ v5 r- H& y3 O+ K$ W& ~/ v+ M) z
set neighbor-total 0, ^9 X& n* L; D' V
set trade-times-total 03 Y4 `8 f. p' j, W5 q! @$ @) g4 X
set trade-money-total 03 A# c4 ^. x# v8 Z
set customer nobody
% M9 K" ?, I! t2 R5 v& }2 ?9 {: ?- lset credibility-all n-values people [creat-credibility]
6 \, w9 [  m/ N- ^6 sset credibility n-values people [-1]- P5 h, U, N9 g. u) j5 L- }
get-color' h8 S; Y$ s+ J+ ]- m% |

$ R' ]& A, d' Z- j1 Zend5 t# N. f; T4 p+ H9 g( i$ F# q6 h

8 J& i, \, Z4 Z. u/ oto-report creat-credibility7 }) W- C% i) `6 n7 i
report n-values people [0.5]0 ~) d( O7 S; D$ {! b) \6 B
end
1 h6 w* }% q. `7 Z9 y% e6 Y, ]; t6 y2 q+ f% ?" P
to setup-plots
8 `2 ?3 E8 R$ @  i
( `3 q# q% ~5 X" X0 Pset xmax 30

! x+ L: j, C/ C, p( d) X' s; ]
' R% k1 x9 z; O0 v. P; Tset ymax 1.0

5 t' j0 U( d+ \& W: O6 K! h
2 ^& U& Q  Q6 L' T, jclear-all-plots
- b7 h! m8 D0 f* Z; E2 y

( \& r: z/ [- ]* k# M$ M4 @setup-plot1

. s. v+ P1 n$ ~6 U* f5 ?% q+ p9 S! r: l" O# y) |0 g2 R
setup-plot2

8 W4 q0 ?3 \  v. N  b+ P& j0 r, e
6 G0 K) K+ l3 S9 r9 J: ~, H- usetup-plot3

  t% t: p* O/ \6 _end( X) B3 g& s6 j3 w9 i& N
( G- A  q$ y; J. I) [
;;run time procedures" R/ u+ u, k* Q9 J. Q' b( T% }1 I

+ h1 Z  X$ o/ b) R) tto go. S% \( m1 _) }8 q
. h# Y4 P+ y+ E$ j7 c$ J: H
ask turtles [do-business]

7 E6 C7 @/ P# c  @5 G: @' M) Cend7 M6 T$ N+ G  B, D$ M0 Q

( w0 q. `9 H4 o+ R& p  r7 fto do-business 5 A4 i9 _. [5 w
! O' f2 n, C  s! L1 H( O4 [

0 q9 `3 T4 ^: J4 x2 U  Wrt random 360
/ J) k+ A5 j8 S3 Q; ?: ?
( D9 l# t* t- y2 O3 ?/ w
fd 1

9 A/ ^' ^# Y( c; }2 Q6 [. W: O/ n) L& M8 s0 h% L8 U/ |
ifelse(other turtles-here != nobody)[
7 G0 T4 G: @4 l7 r7 g$ X

8 X' N# y2 V; w4 i# Mset customer one-of other turtles-here

# k. ~3 {9 \7 T% i1 r
6 s, `& e# z# L0 z;; set [customer] of customer myself

- q5 J% C, V' u1 ^/ [8 W/ c
7 q2 O* A& Z( }' Eset [trade-record-one] of self item (([who] of customer) - 1)3 M3 X! Q2 b! Z4 a; v  w
[trade-record-all]of self
- J% D, u' t3 U$ D$ q;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
( E% E6 W4 e; L& @4 o
/ g, e7 \& c* {7 C# \$ O0 O2 t
set [trade-record-one] of customer item (([who] of self) - 1)' R$ }+ s6 Z; W7 w
[trade-record-all]of customer

  I1 A$ T- m; R3 }( O2 Q  H3 C
  E1 i- P! o( B; I4 J) bset [trade-record-one-len] of self length [trade-record-one] of self

7 |2 X: k1 e7 ]: R, C/ v
9 T/ \- i# n+ w& p, D' }: fset trade-record-current( list (timer) (random money-upper-limit))
( B9 H9 A( g! V, i4 L2 p. G( l1 M! \6 E
* r  T( r* p: u! k0 ?" z5 Y8 F5 {
ask self [do-trust]
7 S  c# @9 v' q- J1 H;;
先求ij的信任度" u$ X9 B: v6 i# y' X
0 Q, Y8 Z  g) `$ ?# j
if ([trust-ok] of self)5 s, a7 u, z, j$ A4 w1 j
;;
根据ij的信任度来决定是否与j进行交易[
# Y; n8 ~4 r9 k5 D# n8 Iask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
6 s' u4 l* ^5 S1 x) I3 r
2 U( X) q" J' f/ f, z0 n$ x$ S1 o[

0 E. S' Q2 b% M& S, H" g
# l+ r" ?; U1 o; a( z$ Z4 {- l& udo-trade

+ v0 B, s7 N  ~) Q# R- n9 F6 R, k8 [5 A' i; a: p' G
update-credibility-ijl
) `  m0 J+ }: q. h* Z: z
& O6 R$ \) h1 O" `; p4 j+ e  Q
update-credibility-list
% l1 ?: y: u% @3 }+ p3 {* o8 T  s6 e  j* `

5 i& a! B" Q2 p* A& Y9 Q- _8 f% Z( L
update-global-reputation-list
7 @0 m1 }+ U; M$ w4 _6 v
: R' x! ?9 j1 X$ M4 E
poll-class
& v+ S; Y& g4 @+ F4 N( H1 }
3 @4 o7 }2 w  O" t0 F% u
get-color

% n1 Z, t* Y- v0 ^0 r2 S
$ f- B1 ]# q$ _* z]]
3 g$ N) G( h3 n7 u
+ G& V( r$ E" \& C) C- Y;;
如果所得的信任度满足条件,则进行交易
9 x, y) {, f! M. ~8 Q. S
6 j8 A. G9 J% L3 l( ^4 [6 H[
4 ]" a% ?2 E- Z$ k- j

/ z4 ]& Q1 ^* Q- H( ^, Mrt random 360

. L/ b. M) W: _  L. Z; p1 J$ J; H7 J1 r
fd 1

4 h. y9 a  R) w( x$ o
2 m' w4 G- J8 ~]
& z# ?6 r) |% X$ _+ j& y1 J

9 V& u, P6 C3 w6 x  Wend
) H3 V0 q$ l* ^7 _, X$ Q

5 U; ?; D% U; ~+ z7 Eto do-trust 9 O4 M/ E/ \7 {0 H5 w, L
set trust-ok False) [" n; A7 r4 ]. g' q
7 P, t$ d& t' U0 q% |& K

/ s0 O" [0 U5 L* D' d  e8 X9 u4 Llet max-trade-times 0
6 ]  C% G; E/ @8 Cforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]; h+ L. ]% X, P8 h1 [1 Q  c8 D9 h
let max-trade-money 0# R& _3 E- p* d5 J
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
3 A5 d/ W: K  v: f" n: L3 {; Olet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
# {: S: f( D0 r; t$ e3 H3 z+ l8 j. O+ Y4 }

- L7 O9 O9 u+ ?; Q! x: ]4 \, [9 Dget-global-proportion
1 B: G3 f# ?  D5 D' Clet trust-value
! ~" q/ o2 e% L& }, D# Tlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

  O; o) B0 ^3 H4 Tif(trust-value > trade-trust-value)
2 V  Y5 j! v, ~# A! U, G[set trust-ok true]& w  ^  J4 w5 E  o# i+ M  O) I/ u
end3 T0 V+ o0 K% }" I  n: T0 e
; q; ~) m7 O* m  q
to get-global-proportion+ C7 A- W/ J0 s7 H: S6 V
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
; w) A: g/ H+ g! {* q0 n1 F2 G[set global-proportion 0]
: K. b5 g  b. _$ u* l[let i 04 u' j% @7 R" u3 c8 w: y2 d0 j, ?
let sum-money 0
# ~0 g0 o4 ], l" A+ ywhile[ i < people]" u6 y# o; e, C' e. Z
[4 X# Y# D# y7 ^* q
if( length (item i
* z* f0 a; ~0 v! D4 M3 P" w, N2 D1 a) D[trade-record-all] of customer) > 3 )

6 n' ]8 c- n/ d" p0 r# e. L+ I* i: C[
0 |- k1 @8 b0 D! H3 q/ }) Kset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
; x9 _8 x; j  {2 `! C% ^( k]
% t# _7 x1 k' s3 j# f1 X' `1 Z]% |9 K6 U( H  d/ c  y
let j 0
7 [0 \5 U6 i* X0 tlet note 0
( _* c: ?* B/ f, s5 W6 cwhile[ j < people]0 z7 ^* F4 x" @0 }+ Y7 b7 R
[8 I' U- n# ~  U: o1 F$ R2 {8 g( t
if( length (item i
5 Q# N/ {/ k- o' `5 ^2 |[trade-record-all] of customer) > 3 )
4 G1 s% w! d# x; i8 L3 P
[4 @; I  j; ~3 l
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)4 p7 X! V- b. R5 `$ j0 D
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]8 b4 B; O; t2 H% @' c4 \
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
+ g( t" k! _- U! u. k8 C  M]  s" s4 P# K8 T5 G. X
]$ b1 Q( g7 Y0 A- J; M: Q
set global-proportion note
+ L/ u+ t0 m# r! a; C! U5 L, L]- A4 G1 @1 l6 v
end2 w( g" m7 Y" O3 ]# l$ o9 _

; U9 O+ g% O3 N$ d1 T4 dto do-trade! w/ V/ A) E: w- m0 v6 S
;;
这个过程实际上是给双方作出评价的过程7 H, W& X/ @6 ?6 C4 ]$ f& _, d& H: l
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价  d7 ]( o% G( u5 y( Z. X2 Q" @
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价/ [0 Z6 v, W3 ^  u' u; d; u
set trade-record-current lput(timer) trade-record-current, I5 A: V" J/ g+ I$ e! |
;;
评价时间7 B" R( i7 }% f) s/ Q
ask myself [
, [, j% \1 s* ~. p* H; bupdate-local-reputation
8 ~( x0 O2 W" \! E4 @; a, Vset trade-record-current lput([local-reputation] of myself) trade-record-current
7 ^: ?: J; L: t; j]
2 A) `( g1 |# V$ ?- X+ jset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself8 N' U2 r2 [: |3 }3 J! q
;;
将此次交易的记录加入到trade-record-one
3 H* j9 P9 a0 ~9 v7 G! i8 M" gset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)* d, S, s# {1 B
let note (item 2 trade-record-current )
, l  Y  W. c5 k0 u" {7 A8 W6 j  \. I1 N0 _set trade-record-current
2 Q4 @* n7 e6 a5 L5 n) t(replace-item 2 trade-record-current (item 3 trade-record-current))

7 e$ g+ h: E, N" i, Bset trade-record-current0 ~8 x( h% ]9 L! Q$ h7 Y
(replace-item 3 trade-record-current note)
( K, Q& n0 h8 e0 r! L  n! J1 }6 Y3 G: d9 K& p; I
! X, _) e0 @" \( U6 f" @7 m
ask customer [. D; q; {# A+ I( C, ^2 T
update-local-reputation: b# [# P3 i0 \5 |1 T% [! ]
set trade-record-current, G7 U& ~4 X( e; x. `+ d
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
% Q: ^7 x# [  M9 j: @% V+ m
]
5 u9 M" f$ |) }) C* k4 h! M; u6 B3 A) l) Y# d

2 B5 `! H- Z. x$ Kset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
; d$ e8 D# f% g1 L! w2 A" m
2 W9 O; p5 \$ I
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
8 y; R7 Q2 w* g, v9 ]6 x( Y;;
将此次交易的记录加入到customertrade-record-all
- H: R% q3 ?# s- u1 s5 dend  R% C3 b8 S% Q  S1 F

/ {  x$ p9 q9 w9 Y, A9 Ito update-local-reputation
4 v$ A6 f) ~" pset [trade-record-one-len] of myself length [trade-record-one] of myself% q: x" Q8 \1 a

( y2 k  @( p/ C6 l' _' [0 I& S- ]+ m- R* @2 T& ]0 R
;;if [trade-record-one-len] of myself > 3
% H' R; y! \: J* N6 q+ x' {
update-neighbor-total0 p- ~3 O1 \- g. ]4 t8 K* H
;;
更新邻居节点的数目,在此进行# N9 f6 t1 |5 s
let i 37 x; H$ N/ L) o& S- h% L
let sum-time 03 t9 O6 O3 R5 X
while[i < [trade-record-one-len] of myself]) F: F+ u/ [" K8 m+ |. r' V
[
. O7 y4 J. @7 w7 Z( O% y+ nset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )' L3 e) e2 `) h9 n1 c+ H* x) x: I
set i, N( K* Z" _9 t& c* L
( i + 1)

- T, Y8 e2 q2 X]
+ x& e( v# J  j" t. olet j 3
% s8 E  n+ N8 u& Ilet sum-money 02 O& T' P1 W/ e% {& {, Y" j
while[j < [trade-record-one-len] of myself]( Z1 h4 S7 K4 S
[; P8 X" W+ J9 K' J1 O
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)
# Q" ~$ \5 I$ l+ {) Lset j
# Q9 |* b5 l: ~7 n( j + 1)
# a7 G$ Y& l8 D$ S. p+ N5 Y
]
; v8 T* h& n: K2 ^! a2 L$ K- Hlet k 3- Z1 E' `2 E. ^) O$ N' C
let power 0$ `6 V3 `2 w4 g& X# g
let local 0/ K4 N1 m3 K1 a' G5 m2 T7 ^" c" Q
while [k <[trade-record-one-len] of myself]+ ?* S' F7 p  n6 i) }* N7 L
[
# @' |' |5 s' n( d& d9 v$ v6 nset 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)
2 y* S! B4 C- @3 zset k (k + 1)
  ^2 O- @* F6 e1 @. d, S]
$ r& K+ y( }2 b, oset [local-reputation] of myself (local)6 O% t- v5 x& b$ Y2 l% T# I; _
end3 m4 F* \* v6 U& r

; t- J2 @# A3 i; z' sto update-neighbor-total
( t& s* Y! y  K; |! Y
* C9 x7 I* M/ uif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]; P0 O- ~  K/ \0 Y2 a* [. X4 z

' ]) }! o$ Y9 C+ }

  ?# g+ M. m, V. v0 v! ?! [8 rend6 _7 w* F& g3 {1 y9 `$ X$ a% m3 W

' l0 I" t: x) K4 o* cto update-credibility-ijl * w* c$ C) H$ B+ o1 \

8 y0 B# C+ q4 O) y;;
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 k. c; R# [- N# N6 T; ^" x  y
let l 05 O% L' d: y$ v2 a
while[ l < people ]1 b" j# I' d* V) I, 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
  v7 G4 T; h5 G! c" [7 O9 f[
; Q! q' R1 e) Plet trade-record-one-j-l-len length item l ([trade-record-all] of customer)  z' t( Q2 v4 o  h
if (trade-record-one-j-l-len > 3)2 C. Q$ H2 B, i3 F( _+ p+ ~
[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/ a( M, R$ N) q% `$ d
let i 3
$ n3 V1 ]# }8 x  f* q* E5 ulet sum-time 04 j) S0 P' L! {9 ^! C
while[i < trade-record-one-len]
$ f, [( ~1 A# l. Z$ C* y) ]! N7 D# H' K[; q# g: o% k) N& G# n( Q! L
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
$ T# r: T5 F. ?# _# jset i3 |$ h! S  V* D* g
( i + 1)

/ |8 ~0 m# {0 |, O5 P1 ^* }], @8 E' G9 n( T3 [8 ~
let credibility-i-j-l 0
( d; q: |: Q: i, N  _4 I3 N;;i
评价(jjl的评价)
1 B5 x  \7 h5 x- _let j 3
& J& N9 A% e6 ~0 H& l7 h  Ulet k 4, v$ X" o" Q  u: a. a
while[j < trade-record-one-len]
) c$ B# ]  v8 o! n[5 Z% V1 z  p6 a, q7 {1 v* y9 o, [
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉) P& v" }7 {: ~/ C. a
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 @$ D" s% {% `% G& m) q* C
set j9 z+ t0 ~1 C$ |8 r: K% h7 S
( j + 1)
' [( H9 f9 t$ A) z' Q. u
]5 c: a2 O/ \0 Y$ w: u+ z
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 ))
0 S* U; J. X0 K2 ]; t9 T/ h% ^6 H( p

' J% T  C% _; }1 x( {) Qlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
- f& l9 Y; h: l9 q6 E;;
及时更新il的评价质量的评价
0 ?; O  ]' @) z8 \! a+ M; v1 Mset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]" w$ U2 [9 o' u4 _; ?8 V
set l (l + 1)
# H6 z1 v  A- E' F* K: x9 \9 l. n]
# V5 e. q( A% b) m8 i/ p/ r' ~end! `' X0 [; q5 C* b
6 `; h/ A3 {& h, P0 ?9 ^$ v
to update-credibility-list9 c8 _* Z+ `! s
let i 0
$ p, t9 t0 s6 bwhile[i < people]
8 r! G! K4 |8 N$ A8 k- j7 w[' f2 T( x* f9 ]; I) }' A% f+ p
let j 0. N3 \0 c- Q5 m: s/ w; R% |. p7 G* v3 }
let note 09 u+ k' p- d4 F  s1 K+ ~
let k 0
- L4 X. ^# ^* v9 _1 @/ H;;
计作出过评价的邻居节点的数目7 `1 T+ W9 f! i9 N
while[j < people]! R6 m6 D9 ^" `
[
: z  G' y- W: @% @" p! X& kif (item j( [credibility] of turtle (i + 1)) != -1)0 C9 Q3 B0 h' E" v9 `1 k
;;
判断是否给本turtle的评价质量做出过评价的节点
# j6 w# z! e5 g. z0 h* }( _. g[set note (note + item j ([credibility]of turtle (i + 1)))& ?: i( p5 ?7 O$ Y
;;*(exp (-(people - 2)))/(people - 2))]

: [0 z# B) A" W2 b% f( wset k (k + 1)
2 O1 e4 \- f& l/ p$ Y1 H3 T]
7 w5 m- c  t$ X  |& Wset j (j + 1)  {6 \3 j$ L% {! K% r# N8 j
]
! ~9 w' A- ]9 mset note (note *(exp (- (1 / k)))/ k)) Z) Q, |, e2 {
set credibility-list (replace-item i credibility-list note)
$ d9 Y4 R9 R  ~' o0 O1 Z% k7 eset i (i + 1)( ]/ K; V: U4 r9 X
]
0 u* b" M- D3 `$ Y! i( h" U: ]end
) H, f' n) z+ Q: W8 u. l# v. j
1 |( v' M, G0 D- }$ [- A1 u7 }% nto update-global-reputation-list2 ~- e; h! M+ o" D$ d' q. m5 H7 H
let j 0& J9 j1 U' e7 g$ u. E8 B
while[j < people]
" j3 k% S3 a$ S+ h0 D[6 E  v' ]2 t' f
let new 07 L2 A$ E$ {7 ^) z4 A
;;
暂存新的一个全局声誉
- N! N0 P3 Y# O% nlet i 0
5 u$ m% R" ]% W  B$ n# blet sum-money 00 \! k7 [4 e# X0 i6 N4 D4 _8 g
let credibility-money 0
( z7 T0 c2 Z' t. d/ a, X, ]while [i < people]& {5 ]" _% r  _, z
[0 b1 F' Y0 A, n# x* P
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
4 c" f# m( B/ |6 |set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
4 W5 T3 Q- H9 K; r7 |+ W9 w& `set i (i + 1). M5 S/ k  v+ b
], E) h- ?* e3 V, L- L
let k 0) I' Q2 a7 Y3 [3 S, ~
let new1 07 ^+ D! c; t8 j8 E
while [k < people]+ ?! X* t8 a" k
[
( R7 N! K- T) @& C+ lset 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)
! B, R) @; \& L1 K( Fset k (k + 1)
1 p( Q2 Y6 ?7 L3 k! v$ J, q/ v]) n1 U2 t- q+ _% ~) a% L0 n# ]
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
0 [6 W% ~# l  R6 Qset global-reputation-list (replace-item j global-reputation-list new)& z  ^, ]% k  K: f( T% D4 u# w" F
set j (j + 1)
! _& l( |- O9 t5 h! }; o/ t/ w]6 ?& B+ K+ O7 u. Y  a& n2 ?
end8 i! {" V' [+ x$ Y: t$ @

7 H8 k; @9 R8 ~0 ^, v" i# O7 F" B0 N% y0 w$ y$ }. k( v. b
0 f8 Z& u& f  T! [2 h  E
to get-color
! _  h9 M: x2 |6 u. q3 f" ?/ B7 r+ H. }( u/ I! m7 g1 j! F2 t
set color blue
# U' `* w% I# W! Z4 e5 @
end9 E, }# L) G& i  T* p) N

( v  ^+ k  r+ _# [# _1 |8 Cto poll-class
3 j. i# n, y3 J1 L0 y; yend
2 P# |7 G; e7 @% P# [. O) O9 h( b0 a. u+ P8 @+ W# n8 W2 w
to setup-plot1
! s6 m0 w3 K- e: ^0 ]7 Z; W
- I( r, b0 M9 b. |& ?set-current-plot "Trends-of-Local-reputation"
% c; W) M( q; w: x

& ~8 y) z- B* v$ Z) d" S. G/ fset-plot-x-range 0 xmax

$ [1 d$ s- k; d, |4 n- x7 g- X
( R$ E* J' E1 f. h; v, `& aset-plot-y-range 0.0 ymax
/ {% s$ P' I, W) |- u0 j
end( d" l$ [* F) c& D& ^

- X0 ]/ Y5 K5 y2 ?7 uto setup-plot2$ A( u3 u" v) F6 y$ B  H: e
' _6 H( L% G! [4 P
set-current-plot "Trends-of-global-reputation"
: ?9 A$ {0 ]0 e  w2 R0 R' x; H$ M

% U0 A4 ~- X( B' J  }+ oset-plot-x-range 0 xmax

: D# d3 W, _7 I* C. N1 j! d5 [
' t- m1 z. R5 _- `set-plot-y-range 0.0 ymax

0 i; _' o# t" q4 @end
% S4 ~1 M. S5 f* ?- I
/ G- Y& d1 C3 V8 l5 F8 `1 z; ito setup-plot3
" |; V( e" u/ `1 i/ b  u' f& A1 V3 b& P5 V! z7 W
set-current-plot "Trends-of-credibility"
3 z  g5 v0 h, D
* `; h- S' d$ t3 s
set-plot-x-range 0 xmax

4 s9 N- O; [2 p- T0 z( k" n8 K# u5 Y( B8 S8 U, a7 S' _$ x* I
set-plot-y-range 0.0 ymax

% \; n9 C1 z+ d) f; Aend
1 w6 L* o& ]8 ^9 Q# r# [' ]8 R9 ]6 L; m$ s0 D
to do-plots
" I2 Z: b9 Z  ]) ]! i- }set-current-plot "Trends-of-Local-reputation"
5 o1 V* D. j: c- [  Pset-current-plot-pen "Honest service"* f1 c7 D, g0 q0 ]% P7 X
end
5 J! {5 B' w/ j' ^. K% o* ^5 r1 J8 F
[ 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.! f& i5 [  _1 M8 W4 _& @9 d
+ `7 R6 m) `+ }* E% M1 e5 W
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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, 2026-3-17 15:35 , Processed in 0.038593 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