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: 15814|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:
" H3 E* l6 Y3 }to do-business 2 \, s: J9 y! M" E+ B# p4 `
rt random 360  i' h. G  q" a
fd 1
: Z& u$ p$ W- e* o. @. I* L ifelse(other turtles-here != nobody)[: _( j- x! n* y" o& F+ M4 W
   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./ M" T9 A/ J6 c* w1 I
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    * P1 O, \/ ^% s8 I
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer- t4 w: L7 {3 E4 f" v  G
   set [trade-record-one-len] of self length [trade-record-one] of self
- V0 }2 I4 H/ W6 o3 x+ N   set trade-record-current( list (timer) (random money-upper-limit))
! D& {# s8 p0 d
% J9 h$ Z' u% ]0 u) ]& w- Z+ w问题的提示如下:/ b: w: j) G* }6 `1 B0 u$ [* j
7 [2 Z* A7 M8 C  q4 W
error while turtle 50 running OF in procedure DO-BUSINESS, y6 \/ T6 l4 t, _) y3 `
  called by procedure GO+ @! a2 M' Q# d8 r
OF expected input to be a turtle agentset or turtle but got NOBODY instead.0 e/ w5 Y$ @! K' s) _9 \
(halted running of go)9 m$ i4 j7 p$ N1 ]

5 D/ |. p, R' X- s& h% W9 x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~~4 w5 J1 ^: Q$ n* W4 k( ^
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  L0 m& z4 t1 \: _3 y, U0 O
globals[
- L# @# G7 G% h$ P5 N: Exmax
6 z5 ?1 O# a+ k. K  ?4 a$ aymax
& T1 G- E% l4 Q  d/ a9 Bglobal-reputation-list
4 c1 n0 w' z9 l. |: Q
6 o$ ?& m: v  C+ @;;
每一个turtle的全局声誉都存在此LIST
- H, M. @( W! m* j3 Icredibility-list
3 E, E5 N8 ]  t) z9 c, q;;
每一个turtle的评价可信度+ U1 ^. V( |/ k2 M
honest-service
  g8 s2 ?8 A* Vunhonest-service
# e- {) N- m6 c& Z/ moscillation
# [4 W" V- g. W1 Urand-dynamic. O5 c5 d2 ^- d) w4 r
]
9 _5 Z' m; Z% K( P- g
0 M/ @' ^4 h9 h! F5 R8 v9 Zturtles-own[# w/ \8 s% z' R
trade-record-all
+ A% p+ \6 o  d;;a list of lists,
trade-record-one组成
, t$ E. L9 K5 A# n* d+ y$ ^9 {9 xtrade-record-one6 A4 |  c# Y, m; b  E& k
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
; e9 J* p. I, f7 H  @; _
; u) E6 m5 u6 ]. m: c3 ~  T;;[
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]]
8 L- ?+ t' i5 K% v/ Q' ^$ D& h/ htrade-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- O# }" o5 J+ s! T; V& u7 H
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
  {/ |% z( q! r( T& tneighbor-total* E1 a' @! F2 j: N1 ^, Y( C
;;
记录该turtle的邻居节点的数目# A7 j# D5 S& v. r0 N4 c7 u
trade-time
! u# s( a0 N# J; I;;
当前发生交易的turtle的交易时间
0 \; H9 |1 ~* Yappraise-give, j8 s5 @) {+ \3 C$ F3 n6 g' X
;;
当前发生交易时给出的评价
/ U. w. S9 a! b/ H, p' Rappraise-receive) m" _: `( n% O( c3 ^4 e
;;
当前发生交易时收到的评价
! H1 r  Z5 \& G5 K0 V4 pappraise-time6 R4 V* O- B9 s6 J% K
;;
当前发生交易时的评价时间. A, ^; C9 E' j1 ]
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
7 n9 y9 w* m  Y! Q  x! o% \( Btrade-times-total
' W# _4 f7 z; z/ V;;
与当前turtle的交易总次数
! C. z' r& c" g" }. f6 vtrade-money-total
% Z& a1 N! H, C3 P' E. J! y; C7 M;;
与当前turtle的交易总金额
& \! x0 x& R* W1 c0 c- _local-reputation8 v7 T/ m6 A8 N, w8 b! O: h
global-reputation
. C: t) O# M% R% }credibility
1 i5 o1 Q  Y( Y;;
评价可信度,每次交易后都需要更新
' c) l8 M3 |  @) P- ncredibility-all
+ g0 C! k: l/ E1 V3 ^1 v0 h! u1 r;;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$ g3 b1 r. T$ Y' {  O! v0 Z
- _! r3 K* h, Y- z$ h* _" X
;;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
( \7 F$ b  y3 s9 L8 Zcredibility-one
( J; I7 B9 q) v- N;;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/ G% s: q! d, N% D  p
global-proportion. w7 {$ A8 T+ T, m0 ^% f
customer8 Z. q. A6 @, h+ ?
customer-no
5 y' E* u8 N. H1 O8 s7 v8 m5 xtrust-ok
% M1 Z: x& p% t+ G9 M: ttrade-record-one-len;;trade-record-one的长度
; @5 _( Y6 J5 I% j& |) j]! u4 N: M: n7 d
% G# x2 X; J0 D2 Y$ E! C: d
;;setup procedure6 Q9 j) j7 {; x

) B1 {0 [0 G: u) @- Z( _9 |to setup
! n6 ^* J  l6 |+ O* t
2 b. ?0 i4 a6 D( eca

; n  K! J9 M1 l: ^9 y
; A/ z7 D2 I5 Oinitialize-settings

' y/ V. ~4 \5 x  V; V4 u6 u  p4 n( z/ Y1 K
crt people [setup-turtles]
4 ^4 [1 `5 ^5 m) {0 L! {- x

4 V' p2 m0 @# p: Q9 mreset-timer
9 Z2 G$ f/ E2 _; d) m; k  B

1 `2 w5 n1 W  c0 cpoll-class

& V9 d% S, N6 [% T% Y' s2 ]* h! @# r$ j
setup-plots
# C3 ?1 W: P- b8 |# g
3 R/ x( ~* k! ^  m$ V
do-plots
: ^9 N# j; J# O) A. L9 k5 T& z* y
end2 y/ l8 `2 {) |2 `5 w9 y) O
, y: }) T5 r$ Q+ ?, A
to initialize-settings
& k" L& d- f/ M$ B; Q2 s2 D% B: c; I+ T* Q
set global-reputation-list []

7 e' Z1 m& {( \  o* Q! j4 H0 L1 ~- u" t- b0 [' \3 i2 ^. r8 v
set credibility-list n-values people [0.5]
% x+ S1 H, q* @' p

' ?3 l; y. G; `+ `( k  oset honest-service 0
) J" F& C) s8 V% ^& e( l) p& D! D0 p5 }
7 E7 E. k6 @1 v+ Q( U5 C0 A
set unhonest-service 0

" z" G. ~* H! X6 k1 q
; I8 B- ~6 H6 v5 Rset oscillation 0

, W7 X' w& P) i4 @: }8 O9 {/ y$ i- E" V) _* X
set rand-dynamic 0

* ^( `& g" o- o" @end
& U# w; N8 y0 E+ `( x9 F$ l, r9 T
to setup-turtles
* Z2 y2 y9 U: h- Sset shape "person"" [) l5 |# `* W
setxy random-xcor random-ycor$ ]$ a: U& I$ W
set trade-record-one []+ U. L- O: i4 Q$ q
6 i" Z- Y; `- L
set trade-record-all n-values people [(list (? + 1) 0 0)] ) z) \" u* R: k9 q& A. Y2 p

) w9 o/ ~3 {3 {% B9 C* ~set trade-record-current []; a+ a) J9 J6 h
set credibility-receive []
0 E5 o. h2 Z9 m+ w7 D0 @set local-reputation 0.5
5 V* J8 S$ r2 D( Uset neighbor-total 0
# m; `: s* ]. o' xset trade-times-total 0  A; s7 h8 n0 g% C1 S" [) q
set trade-money-total 04 ]1 `9 G' H$ X2 j" k/ d
set customer nobody
( h4 D% }; c6 N/ wset credibility-all n-values people [creat-credibility]7 _, `3 j8 k- a  K* X3 f
set credibility n-values people [-1]( s2 e3 h; g  B& h/ d, b0 Q9 F/ p/ J3 ]
get-color  ]' T2 D! s: d3 ]5 K: I& _& E
3 L5 m. H6 ^) M4 L* |" G
end
5 ~# s0 `1 I  f- H/ F
% F. R# Y& g7 h) \% t- h# Dto-report creat-credibility
; r! W6 x) `& }/ f' W8 Xreport n-values people [0.5]5 l* P' m2 r3 O3 Q
end
% K9 a1 }& F/ }  G! x8 V6 b# |& g9 r2 g3 N
to setup-plots+ Y0 @1 f) w( e5 M- c' A
! i6 B! F# f( i, ~' E4 M
set xmax 30
( h  B! n0 t0 R* v

) P0 R  ?. i1 L6 y3 e' qset ymax 1.0
2 K- G" S+ l8 D/ X! r/ P# K
: `) {) w. \! ?6 N4 U  S; \
clear-all-plots
( ]3 l& D6 ~7 d2 o' _4 N

! m* M: ?0 ^4 S8 i/ R- Bsetup-plot1
. |9 E9 P9 @% l
+ v, o/ L- D; u% `/ ?
setup-plot2

2 f5 ]: g( t* Z' a
8 K) n. o3 M* W" K; Vsetup-plot3
  B$ K% V4 }; V, h, G/ ^# n
end
2 P& b+ u+ z& I5 r* L/ ]0 }* d% g) z- K" m3 y
;;run time procedures
) O$ @  D$ y7 j& w  T. [. E
$ v9 I4 k9 x7 n/ {to go( a( o0 G. ~$ h! N9 _

/ A! O: {# {3 ^  Uask turtles [do-business]

& {2 |( N, d. ^6 V. s2 ~* `/ oend
/ a* m  ]# J( D6 z3 X
4 L4 S& l$ l  H3 B) ^/ d4 Lto do-business 9 h5 t& U- |2 E; E( E; U% i1 ^
1 v$ o8 |" C( T

. c7 q7 C9 X$ \% Urt random 360

+ d, w5 m6 S8 n5 m# X4 \0 \
+ F9 d! N# n/ |, `$ tfd 1

1 B2 w) b% c2 E) u- U( ^$ S2 A3 i# s! |  W8 H) j
ifelse(other turtles-here != nobody)[

3 [6 X7 U  H4 o- j+ T" ]$ C& x( s+ V# Z* L0 r' G2 z
set customer one-of other turtles-here
  T2 a8 |, O# E. Z
# D+ a3 d) Z+ D) X
;; set [customer] of customer myself

' r- P5 ~" @: r! F% N
' K' @* w( k9 p" a5 wset [trade-record-one] of self item (([who] of customer) - 1)# \2 l  f2 F0 u1 C) W. t0 G
[trade-record-all]of self
) {+ s  W  s' c' l2 `;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
7 T# g4 l9 Q# h% o! W! x9 @
, e3 |- b. Y& ^0 O
set [trade-record-one] of customer item (([who] of self) - 1)( u+ X) R5 w2 M! h/ h
[trade-record-all]of customer
" d% b, W0 o  w) N0 V
* A4 |; @" ]0 z! N, t1 m
set [trade-record-one-len] of self length [trade-record-one] of self

/ j& `+ k6 F6 K( R7 p+ q) F
# U/ d- @' g% j& tset trade-record-current( list (timer) (random money-upper-limit))

! ~5 |1 R  A- ^
' z/ _  q6 B1 Yask self [do-trust]) }) n" R* p1 h
;;
先求ij的信任度' O+ H7 f3 X+ y  r2 g

* o" U; b) Z5 N" }" q$ oif ([trust-ok] of self)
# ^7 J. ?) }1 _7 N# h, Z* d;;
根据ij的信任度来决定是否与j进行交易[( O9 ]$ o4 D% y5 a
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself, g+ q+ ], e5 t) L
9 p$ W/ U0 R3 _0 F6 I) C
[

$ F( J( t9 P8 m4 o. l% C. @1 c0 K! _% P  Q1 _+ R; k% E4 v1 M) r) h6 ?
do-trade

$ Y0 r5 q( _0 h; C  \* T
1 @& l& |5 q) j+ _! K  n7 o  {update-credibility-ijl
2 t0 }; U3 T: c' b9 U
0 T* Q' t5 x2 i0 W! `
update-credibility-list
/ O8 d- J' }4 j  ]  Y1 u4 h, ]/ W
. `2 E* w  g" O3 M! y8 g! F0 n: a

8 t; |7 ~) G8 aupdate-global-reputation-list
% K! ^: ^. x& m+ P6 U
  |: e( u2 S) G; p! S9 ^
poll-class

/ j  ~/ @$ y, I8 M/ q9 }  r7 y6 M- \7 r- W* @
get-color
/ j0 F2 k- d  v- O$ p5 m. N/ d! j

7 [) Q. Z: \: d% b- J- q]]. y2 O2 G) m8 U, s5 f" K" {
5 B6 g& l( z9 p1 y- n1 T
;;
如果所得的信任度满足条件,则进行交易3 p8 I. W9 E, X& H0 z8 V1 ]1 s5 w
! l# u+ z9 |! w: k
[
- [6 p7 f/ k8 U
6 N- y! `9 n& O  v( j
rt random 360

4 a1 F8 c- m* ?; a5 \+ F1 Q# h, {. o% ^( z* Y8 P
fd 1

- Q- O4 s6 j, U+ R
! B; u9 F2 n" v! Z+ K) y]
0 V" s. @+ S9 N+ h  ?( T
: @: h# r( z) R% f. `
end

6 O- b3 ~$ |  `9 Q7 p: ^7 i& c
2 Y. D! R0 u( h1 t, {3 {to do-trust 6 O" `  D3 e1 j7 i* k0 O8 Z
set trust-ok False
9 J8 |4 z# |/ W& B
3 J. o+ i& j' j) n

+ J  M" E1 d, Z- a( J& ilet max-trade-times 0& E$ u' w& U4 w9 O" V# H, {
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]/ G/ f* X7 u. m, t2 x# r
let max-trade-money 0. `! F8 R5 e1 _( r
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
0 `7 T% I. `3 }9 T% u7 I2 f1 _. llet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
+ N$ r8 B6 Q7 Q' W# I6 q% g
3 Y, C. m: N# `

5 j: h, c. w/ W5 r8 g5 pget-global-proportion0 f) [1 Z& Y! {- b
let trust-value
! [! c* Z$ r8 [' `& @( Q; alocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

$ r2 o, V( U% B' {3 `if(trust-value > trade-trust-value)
# C! [. j9 z6 r[set trust-ok true]
1 V& R/ E& e$ h  `7 p, g: _end( ?( `- W2 _3 L2 c) r; J; x4 l

( Y- ~( Z; ]* e; c' g( j( }to get-global-proportion0 d2 `- B* t4 B, B' g
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
# \' l7 a3 ^; I% `' w6 b4 b[set global-proportion 0]
; `4 j) W' O5 I+ b+ V$ H% e) d% W[let i 07 C+ _: ^! M, t) k2 u) t& J1 k
let sum-money 0
- a" P1 `" A9 u% M3 |" r! Qwhile[ i < people]
2 D% E% T6 D1 O) v, A4 G9 M1 K6 W[
1 O. Z- L6 N: |) Z9 S, v' ]' vif( length (item i6 A# u2 K2 @6 H; ^* Q  J5 h* w
[trade-record-all] of customer) > 3 )

, T1 v; a2 u/ b  [6 _) B2 a8 _, d5 V[8 [& E# j# e: l- t3 x0 u& A
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
% S" R/ j3 z9 x7 C" y8 n  j" A]
- h" Z, G. j: y! I7 g8 M) n* ^4 W]
* k. ~, ]1 U' @% D0 y2 K2 U( D# ?let j 0) J5 B# ]0 o9 D3 b  z
let note 0
% o& x8 O, ~3 wwhile[ j < people]
1 G6 F5 G( O/ k& Z  f  j" }% W[
# b! q- }, J' g% Q0 gif( length (item i
0 I% Q. S7 d' d7 z[trade-record-all] of customer) > 3 )

( i" ?& y, b! m$ k$ k+ i& X[
2 F+ A6 i+ P* s2 H2 Rifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)( m3 i5 X: r3 g3 y8 `
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]# z6 y) L; N. m( a% V
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
0 W% t3 ^( F* d, L2 F7 w) T. j]
, R* \) ?" }% r, U' |2 t# l]$ A( y6 ?4 Z4 H6 @* q' w3 |; w- W
set global-proportion note8 H) ]4 ]7 G  ~9 H9 w8 l( t
]* @! u& C7 v4 D* ]
end/ h% G( Z0 i- c6 n2 C# g3 O, ^
. q+ C2 d& l) N) N( @" V0 M9 T
to do-trade
+ x' e, F9 ~1 c* _9 F+ C;;
这个过程实际上是给双方作出评价的过程
# W8 y4 H- x. L( p, V/ h3 Z2 mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
# H! j" I* @( Q) P8 {set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
; H6 ?8 y) e, Q. |set trade-record-current lput(timer) trade-record-current
" R, |3 b! X3 I9 o9 K: L: M4 [3 e;;
评价时间
0 l8 x& ?7 m" rask myself [) E& ?. u# ?5 F+ x2 w+ p% V; r
update-local-reputation$ _, ~: I; r9 _2 v, P$ n/ x
set trade-record-current lput([local-reputation] of myself) trade-record-current
- J) R! s0 m5 \* []
9 g. D+ K4 N! H2 p7 Kset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself# t) m5 }6 x% u* o
;;
将此次交易的记录加入到trade-record-one
+ B/ j7 X1 c6 ?4 lset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
- g* J; e7 J' h' l- Y" Llet note (item 2 trade-record-current )
1 T! o+ x4 c& Lset trade-record-current
8 z7 r4 n, f$ V) `( q1 o2 U(replace-item 2 trade-record-current (item 3 trade-record-current))
3 A# z! S+ b1 Y- E% F: f
set trade-record-current. T. d' O2 ~( x1 u
(replace-item 3 trade-record-current note): X7 e3 s- i8 I

- t* K- C7 o# K) U! L9 C8 N9 U* W

- g, r: f1 ^( h5 j! ]( x2 w; eask customer [7 ~" e* J+ o' z( d7 o0 v7 Z5 L4 ^
update-local-reputation7 E; c1 O; V; q6 d
set trade-record-current
: Q, s8 C1 U8 u0 _1 f$ Z. L(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
3 j+ f2 x- v7 B% I! _# W2 H7 g
]( f' b$ R" q) O3 j
1 @  J: B( v3 D' N' b
% a5 h  g0 d, s& {
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer2 m4 p3 b2 `0 S! I. F
  B4 R  P9 [5 d/ U4 W9 ^
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
6 e! j: G  D( L  y0 Y: o: W4 n/ Y5 Z;;
将此次交易的记录加入到customertrade-record-all
. B* v% |% M- W; c6 b% gend
  W8 r# d; p9 H5 j) q1 \1 Z9 o  [# l9 B& [$ ?
to update-local-reputation
$ }' t! I2 ^* _! q. S0 Dset [trade-record-one-len] of myself length [trade-record-one] of myself2 }, O: G# `6 Q
; B, R  W' Q- y+ @" x0 s0 V( k, b

2 f. E  v. d- ?, d;;if [trade-record-one-len] of myself > 3
, E# R3 O$ L1 ?- K2 Z* k
update-neighbor-total, V* @3 d( I4 y+ j* L( |+ T' z8 l. p
;;
更新邻居节点的数目,在此进行0 e& y$ u8 F" k" o" N' [% _- S
let i 3; ^; l( _) b0 ~9 u/ V
let sum-time 0( [( p+ o, G1 p: l0 p
while[i < [trade-record-one-len] of myself]. S! |- I" ?# j1 L/ f6 c  ?+ r4 p
[- m3 i% c2 t0 M# L) }! Q% L. t
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
+ ?9 A" b, a0 ?, C6 Wset i
; T9 t4 N+ ?' {8 y1 p1 m, q8 z( i + 1)
! m4 H% o# i( {1 o1 r+ l; F
]2 H0 P% ~5 T8 G' i3 p0 {
let j 3
4 K1 a4 c$ E6 t" q1 T6 [9 Rlet sum-money 0
& P+ y/ `  F8 Y7 e( x7 e7 ~while[j < [trade-record-one-len] of myself]# C4 q& q# n; {2 d  K: s6 ~) o3 ^
[
  [% _: Z' d7 sset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)& O  O+ {. a9 z9 ]+ z: o, j' C6 I2 D9 R
set j, ~6 q* x. A3 p+ F" ?
( j + 1)

8 d- m+ B1 u5 X0 A: Z]
5 k. o& w5 h. g1 Y# K: N! y, _let k 3
7 ~  k1 i5 m: X8 S# l2 Q! m1 Y6 n! A0 Alet power 06 ]/ Q0 D( ?1 Q4 O
let local 0( a8 |# x/ E1 f$ y4 V" b
while [k <[trade-record-one-len] of myself]
$ Y! a$ E, x4 `; B7 p[
1 C1 l' S+ P. G  o: u4 M" vset 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)
# y* u6 |; X: z0 C3 K$ \set k (k + 1)
* D" }) L# \6 D  Z9 c]
$ v. G- [- _& m$ z/ V' e. s0 J4 Pset [local-reputation] of myself (local); W  B# D. e. A+ @
end+ {: y1 @. |2 ~2 j8 H; w
  j5 v) K1 @. O6 \
to update-neighbor-total8 w# E3 u+ h3 R8 P8 @6 C
9 k8 {2 C( ?& l% a9 ]
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]0 {9 S. |  m$ ?% Q& n

& \. G6 A) I- F( z! {$ e. Z

# c: c# e0 n) j  c# kend; S- r- ^" I# ?5 h
+ b7 Z9 w% O1 y% t6 [  c5 X
to update-credibility-ijl . f8 C0 y$ ^- P

- O1 ?8 {* `3 q, `3 L;;
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。. d8 h: `; L* G9 g2 ~" b* O  z, y
let l 0% A# O) w; |5 \: _& ?
while[ l < people ]: k. M6 @0 I) \  x/ Q( {
;;
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 ~  m# P) w1 w[
3 H8 J! Q5 D7 clet trade-record-one-j-l-len length item l ([trade-record-all] of customer)! u# V, F8 B2 Z1 j
if (trade-record-one-j-l-len > 3)) `: V; U2 j& Z: W+ L) U/ J0 ~, C
[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-one0 t$ j7 m6 S7 b3 x* V
let i 38 ]) ^5 r" ]6 X8 H% ?
let sum-time 0
- [: }/ U- G$ M3 U" I9 U  D& [while[i < trade-record-one-len], B6 J3 J* W8 x+ l- W$ Z
[
. U* x; f7 o5 jset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
- q+ @8 q3 I4 S' T9 P" ~set i
- D( h. \. }( a/ Q& e6 s( i + 1)

  [$ O  N  S1 R! R9 X2 o2 I: k6 f; V]
3 p3 ^/ ?# l+ Q9 T8 qlet credibility-i-j-l 0
' X" l- B) c: O! _/ R, M2 W# s;;i
评价(jjl的评价). W# \" }9 k) h1 N) _' p
let j 3
2 m/ Q' s* f8 F8 i2 Ilet k 4- n" R' d- _. k) k, ~6 L
while[j < trade-record-one-len]
9 e; z$ Q% r1 k! ?; d" j' d/ p- b[
# I9 L! f" @: |9 P) m0 S' xwhile [((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
. e! \8 R6 v* \7 H; w: J7 R3 pset 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); \/ T% m0 R" A7 l+ V7 K9 m9 W$ g# Q
set j
0 ]" J2 w8 N$ d( j + 1)
, M/ n0 E# I0 Q7 [& S; i" h
]
, G& I/ r; Y' z" ]9 D" jset [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 ))2 m  k- D$ o# r: M  V, H0 Q
% e4 V4 i+ u% _" f) l4 ?

; s  e% N/ Y' A9 ulet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
$ C# N/ W; y; X+ S6 B;;
及时更新il的评价质量的评价+ g8 F9 c" H- t* s: A8 Y7 d. `  q
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
" r4 p( ?8 v* C' g: g8 _, f' y3 n' Eset l (l + 1)- u3 t' w9 g/ q- P3 v1 ~) W4 l4 i2 m
]# G+ p! e; t* s- B
end
$ ], a( A% e! w7 K8 R1 S" ?- E% Z) g2 O5 f, ?1 r
to update-credibility-list
! g4 g- a' Z7 U- W( q% ~let i 0
8 `' A8 M/ \2 V5 D2 \' cwhile[i < people]' t! i/ T6 n! \4 V, m
[- E) C9 J% j- `6 ^, Q
let j 01 Y0 W0 _- i* a0 l, k7 _
let note 08 @' @) N: o; e  ^2 E; G
let k 0
% `) ?3 i9 d$ n) K6 K1 N5 R;;
计作出过评价的邻居节点的数目* T( ]" c$ a  L5 {& t
while[j < people]* R! k. ^- M( V0 @1 J9 T
[: @6 Q9 J0 W5 U: z+ j. E
if (item j( [credibility] of turtle (i + 1)) != -1)6 H: {  P" W6 O+ m- }5 p. F
;;
判断是否给本turtle的评价质量做出过评价的节点
: Q) [" R7 K2 W; n[set note (note + item j ([credibility]of turtle (i + 1)))
- \; u2 [. ^+ w3 Q  b8 t8 ?$ g6 e( K;;*(exp (-(people - 2)))/(people - 2))]
* ^0 s/ T" }. h, h9 \2 w
set k (k + 1)  v4 j, [+ ^7 W5 H# p6 j
]+ f  C2 f- j* |. b( P7 F( Z6 ~
set j (j + 1)
3 ~6 j/ C# l3 ]% j3 i. u]
9 ~3 R- ^! s' n' Uset note (note *(exp (- (1 / k)))/ k)
/ B9 e! b0 p0 W0 m3 Gset credibility-list (replace-item i credibility-list note)1 d5 ?" H& m: z& T3 z1 D3 k
set i (i + 1)* E8 A/ O" }! t, x
]
3 b7 @! R9 Q% xend& t# Q; i/ K7 q

7 m$ N& @6 J3 e2 K1 i& `4 ^to update-global-reputation-list
8 N; u$ F8 J# z! n  Y7 `let j 0
: `4 G2 }7 ~6 C8 z- \, X( H# P0 }while[j < people]6 T5 M. Q& i: |6 V
[
+ B* k3 s) N, W% e7 c" r# Y$ x+ Xlet new 0
. j8 R, O, `7 s+ v4 d' e;;
暂存新的一个全局声誉
& o% j+ m& A  m# q0 clet i 0
$ l3 A7 k. _. g( [' Ulet sum-money 09 I( i* s  p) o% t2 k
let credibility-money 02 X) @, b7 M3 t2 k+ E$ }# I6 W
while [i < people]& k9 i7 P- A, Q2 z0 O4 [1 l: F2 V
[
. @5 \2 N3 S' H  N, P# @set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
' ^+ F" L9 h- c9 d) q5 vset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))' x- d; R' W$ d% w! |9 L
set i (i + 1)9 e6 ^2 |- H* N
]
; |) }0 K% S& Z) h+ @3 _) elet k 0
  n9 f* I: p: _" A* nlet new1 0
) d+ I, R% F( x: S1 O4 X! Q2 H5 S/ Mwhile [k < people]; ^: n; Z1 `8 q% w
[5 k4 K; c9 m( \! Q
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)% A6 V( E2 E( y0 N& K* t$ s+ X
set k (k + 1)
( O* B" S4 \+ s  G/ @% D]8 o( g2 w) r. g- |/ D
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ! \1 y3 Q' {* H
set global-reputation-list (replace-item j global-reputation-list new)
/ u; x; h9 O( @& y% q% k2 [& e! Y1 Gset j (j + 1)
4 v8 P$ Y1 R: X# F# O9 b]
$ p+ \* r2 s! M4 N! ^6 a/ M. ~. @end" Q  P0 ]5 z( y# B; F: n4 G  F
8 N2 e9 f  `5 u( c* [

! U+ S) y, p% y5 F. O$ ]
% W; h3 d9 |: j5 C6 t8 R% M' v: rto get-color
* m/ M3 a( ]- |5 L: I0 A/ P% t0 c" [, D+ t& B
set color blue

+ B7 W- W" I, l% C" \end7 i6 u( |8 L' _9 y8 B9 W
: w+ b) u) K, E, U# R: Z
to poll-class
/ m# O3 d0 c  Hend& i: g) ]2 j3 |2 ?0 [. Q. Y

- o: @3 K0 G" R5 `8 h1 \/ vto setup-plot13 r6 F* m7 h; }6 b, I  [# o' i
) r6 [. A8 X4 f, @
set-current-plot "Trends-of-Local-reputation"
. @0 V; w) P$ e# n# C' j6 c

/ Y- ~) `4 g8 {. c  ?! T# b! Aset-plot-x-range 0 xmax
2 \/ u6 N/ z7 ?. f6 I8 @2 Q

. E- L8 E# j4 F' P% b0 fset-plot-y-range 0.0 ymax

  T4 }5 u. j6 [- F' H6 v) z2 D+ wend
# X* s/ ~8 r- F  O, P3 r* p& ?& h8 v4 t# x( i9 H
to setup-plot25 x$ a( s3 b) x, M6 |# m( S
8 x0 C$ n" ]- c& H4 a% |
set-current-plot "Trends-of-global-reputation"

" p( E% d! `9 E6 Z# S
1 m& \0 ?- V  hset-plot-x-range 0 xmax

$ ]/ i+ N8 |0 g. B# Q* f0 _
" O+ d3 @3 j' F! fset-plot-y-range 0.0 ymax
  L. ~/ `3 _. ~% m/ B
end& ?1 x  ?, E1 p/ C, m, L) l

; L& y. @2 F7 A6 eto setup-plot3
7 R$ n& a3 }; c1 y( i  p& h
3 w" F; h0 s3 r! S0 [6 _set-current-plot "Trends-of-credibility"

2 Q5 @7 k9 B! K" A; K% `
$ M# m* U$ k, {set-plot-x-range 0 xmax

& y3 u9 }4 s/ @4 m: w5 p
8 N9 x" ~' P8 t$ `4 a: nset-plot-y-range 0.0 ymax

* @) k+ u' `: U) hend
' Z4 D& `0 ?& x. f- f7 _& s2 P- W2 p4 {5 ?# Y; r$ T2 }: i
to do-plots) }6 Z$ ]* Q' g6 x# d3 @
set-current-plot "Trends-of-Local-reputation"4 ^( C, l, ?% K& ^. R  {
set-current-plot-pen "Honest service"6 E3 S% Y7 ]7 M* h
end3 y0 s, t( ?6 E- Y$ e

0 S  r5 w, k9 D0 r5 B% w[ 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.* Y8 U, X! g2 U" y
0 e+ R4 U8 e8 j1 X! p
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, 2026-6-26 23:36 , Processed in 0.022148 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