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: 16122|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:
+ j3 F) E! a* Z5 S. `; Wto do-business 6 |+ Q0 f  z: i0 J) U+ z3 L+ K
rt random 360; O4 I7 Z* ^! @9 A
fd 1
, G$ b7 _2 x( T" t7 B ifelse(other turtles-here != nobody)[
. ]& h! }+ B) ^8 i: J/ B/ M5 T   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& p7 B' ~! p' u   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
. @: Y1 e& I" t1 ~+ ^   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
. n1 I: C8 X# I' j* M   set [trade-record-one-len] of self length [trade-record-one] of self
& X( Y; u, V9 f- g8 }   set trade-record-current( list (timer) (random money-upper-limit))& b  O4 }) @1 _! j3 F  W1 g

5 o2 V& X% n, F6 \8 E; l( ?问题的提示如下:
' I# V- ]: @/ {+ N; I8 k( _
/ W) X2 t* h& r9 Z. kerror while turtle 50 running OF in procedure DO-BUSINESS6 `8 i# P. S& H6 f; a$ c
  called by procedure GO
* x, r+ e+ g. z/ W9 y+ IOF expected input to be a turtle agentset or turtle but got NOBODY instead.
1 X" f8 w  q% M; N! b- M1 \* B
(halted running of go)/ x% |- }/ ?/ S5 i: f

5 ?- L1 X; `- v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~~
* H* Z" E# X/ g3 x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
- V8 d; L( d6 A. Zglobals[* \" x! b- {. ?" T% |
xmax
! M$ k7 m7 }8 F* y; pymax6 O! A) N, r$ b& E; ~. \: p
global-reputation-list
3 S, u3 Q$ t! O1 r( {! G' [# c# x! l
;;
每一个turtle的全局声誉都存在此LIST: `2 n( m- z8 Q5 @% v, G  o/ C
credibility-list
$ v3 p6 A& \2 p- Q9 r;;
每一个turtle的评价可信度
) d- x2 g" m( c- q+ U4 h1 Hhonest-service4 f( ~0 Z9 @$ J+ b# _" t3 E% `' w  Y) w
unhonest-service
. z: t+ O7 z+ f7 V1 Eoscillation8 Q$ J& V+ u3 T7 @- i4 B
rand-dynamic+ i! v" G# s& a4 H% c
]: ^' @. f+ Y! y) w+ c, h
9 {1 p. a% z% u  s# R; W+ _
turtles-own[
/ X2 l$ V, E6 Etrade-record-all/ W+ P5 c3 i; m! l6 N
;;a list of lists,
trade-record-one组成# P' H) Y" n: q  z
trade-record-one/ p7 l9 d. p1 l% F. Q
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录: u( {; n5 t9 h% \% a

' p4 ?  W( Q: I# u;;[
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]], C0 o) g4 r2 i% O
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]$ ^  t0 T) W+ _
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
" a1 k9 q: @3 r- w6 tneighbor-total  W$ `: l& I0 g% _7 _
;;
记录该turtle的邻居节点的数目! S# Z# r! x' q) ?/ K3 X7 d: O
trade-time7 C8 d* r/ v. Y
;;
当前发生交易的turtle的交易时间, o* L" y1 J$ E3 d
appraise-give
  g% l0 E- w, k/ X% g$ o) Y;;
当前发生交易时给出的评价9 D4 P! A3 X+ m) Y3 \9 U
appraise-receive
% e. y% T9 B# G$ l, X  u: Y- P;;
当前发生交易时收到的评价
: V; T% q" |" p5 n" S5 a9 Yappraise-time( f1 q# y0 O  F* |3 y
;;
当前发生交易时的评价时间
4 P) D# T" H0 l0 L- P" N( ]local-reputation-now;;此次交易后相对于对方turtle的局部声誉
0 E& Z5 @! a6 otrade-times-total
' E+ c/ }  o2 U7 D/ c;;
与当前turtle的交易总次数" P1 A% M, D! d5 x- d+ F
trade-money-total8 c3 d! z/ ]5 p
;;
与当前turtle的交易总金额6 T* a" U* \$ V4 s1 w( G
local-reputation
1 c5 N, @. Q+ G; z4 ]global-reputation
8 `# r% S0 ], k" H( Y7 L% ccredibility; c3 N. M2 Y9 D* \0 \- X8 w
;;
评价可信度,每次交易后都需要更新8 Z0 V/ o" x: ]; J5 V. p# l/ H9 g
credibility-all; B% u& C: a4 l3 N6 Y$ n
;;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
+ |' F+ `3 ?' E$ C/ ^' J
  p% s" ]( v- v& N" L: d) d;;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' B' w8 U  U3 E: D% K
credibility-one
3 e8 I* [- x( F/ V- g) i;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
- d7 v* _! b' q6 _1 Rglobal-proportion
7 i$ g( ^- L: e8 G7 d: l' Wcustomer2 i" i) Y; {' B& A9 n
customer-no
5 T; c( F/ L( qtrust-ok
( w) [0 N7 R4 A6 itrade-record-one-len;;trade-record-one的长度; k: ~5 C. G* N
]1 F1 y# S, n+ J; M- B

- T; |$ V* e6 h3 |/ a* U;;setup procedure$ @& e( G7 D# ^0 B

' [+ Z+ ~& ]" y( Oto setup
# S1 G# O8 r0 j; h- O/ m* \) _4 e' r% a8 _
ca
0 a; s* f; y8 y# w; b- w# y
9 _! n+ `6 ~3 e8 {% z: O) N7 E
initialize-settings
2 K$ P- X6 A$ h
4 H( V! M9 k6 [2 {7 |" X
crt people [setup-turtles]
$ \" G$ \4 l6 B& T

0 u% h) u) `6 ?+ F5 g; n0 P' u% k% Breset-timer

0 ^  k+ o2 e/ I0 S" y% B- w, R' `. m5 z; a6 Z+ `
poll-class

; j% J, n2 F, C" t! L
4 ]4 J! w; `" ^: Ysetup-plots

% w6 O7 Q- m' F; x
/ e( l3 k% [& [- ^. e: M$ qdo-plots
2 k+ J% l3 P# A/ K
end
! y" Y* G" s2 [# D6 A
' [) d3 M* W  G; hto initialize-settings
% g9 N. O0 R% t/ e! Y' s
, e& p9 o6 b0 i2 ~set global-reputation-list []
" \+ [) b# Q0 y) ~
8 Z3 k% n  L. O
set credibility-list n-values people [0.5]
; a# c. p5 k, @1 [" T6 b  Y1 f) Y
& m% n- m6 R* `3 U$ F- N( T
set honest-service 0
9 I) C2 d. ~  C( X) r
( f% f* r1 Z2 C0 |
set unhonest-service 0
% J* D, @; {6 C6 T
0 Z0 T& f0 D) p
set oscillation 0

- g$ L4 T/ l4 [. T8 Y4 V* t" F1 K* H- x! f2 A
set rand-dynamic 0

  a& g" z% p) X* \1 o5 gend
+ z5 t7 y5 g& N, e3 f5 ?
+ G" Y3 J* w; L" e/ J% I& h. Cto setup-turtles * s. |8 r- M- Q5 w- \% U! _2 X
set shape "person"$ _$ H' T, ]" K& g) ]( @
setxy random-xcor random-ycor
; @- v0 a* E& T# _# pset trade-record-one []* Y' K" [6 g0 r0 `1 M: i7 |% r
  ]3 p' P/ [9 t3 I
set trade-record-all n-values people [(list (? + 1) 0 0)] / {( H! ?( g. S

( q2 c2 {7 S) f9 Bset trade-record-current []7 ?7 ]) y) F$ N1 m$ {, T: |- b
set credibility-receive []/ }! }& ]2 h0 V  a: r( y
set local-reputation 0.5
( `% Y) a2 n: y9 @' v/ f8 m- _3 Zset neighbor-total 0
- E; x& B+ ]# ?8 C% U& K8 Lset trade-times-total 0
, r0 `6 H3 E6 G1 G$ H4 p! K/ ]" tset trade-money-total 0% }7 C% S" `$ L$ W" U
set customer nobody! A3 ?0 l: v" h& c
set credibility-all n-values people [creat-credibility]
: N' D: m( Q1 e% q, w4 b3 cset credibility n-values people [-1]
. ^( C2 v) w4 P6 F: v: Vget-color
& c1 S" e2 j! o

- h1 H. S! H9 [+ E+ Kend0 ^, u& d$ q: }4 I/ \: D
$ `# e3 o! f, o) Q( ~7 i4 Q8 q; C
to-report creat-credibility
! `) E( S' C; _report n-values people [0.5]; f  K, E7 ~/ S1 y3 A- Z; T$ {' R
end0 F- A, h* p+ n2 c
/ }/ z; l8 n* W1 k7 Y
to setup-plots
8 j- h5 A. `+ Q% j8 n9 d: ~5 b. s% H$ Y0 r
set xmax 30

0 ?: t* n5 [, x' p5 J6 Q
2 z( M" ~" X4 q, b( ^set ymax 1.0

1 S! Q) L3 `! O0 d6 j1 ?2 h' U. D' y2 k* a; {
clear-all-plots
1 r$ s# h% {! |- }( u4 g

) S# _5 g3 ^: W" k. e" gsetup-plot1
; g1 @9 j& ~8 w2 O

8 c3 |- g5 s) D: A; ?setup-plot2
1 k/ @2 q# v/ _7 {
9 V# P/ v  l  \4 f& ^, Q+ W
setup-plot3

( a* X9 v0 E3 y* N0 n) u5 Nend
# a2 w1 D) i: I7 u) ^
' m  I) B& v$ @; V; j+ x1 j! |;;run time procedures9 h3 S& S+ P. H/ {3 z. N

" w4 @4 d/ n, G$ Dto go7 ^* z, Z: _! K. o7 J+ H9 p, F
+ ?8 V3 Q7 F. f3 T8 W+ O
ask turtles [do-business]

. ]( a& f$ [# W& u( q2 dend7 H7 j$ p" J9 Z5 N
3 v/ \, a/ D4 t: `# R
to do-business
/ i9 }6 {2 A5 |; ]( m3 `1 S1 D

$ A3 d9 o0 t1 A9 \1 c
7 F1 @; w6 g) R! N# c! d# Vrt random 360
4 z% D/ f) G/ @: m1 w6 q2 Z4 m
/ Y& ?- h" p6 L/ m- O* [
fd 1

% r, ]$ [+ V5 j& I; x# ]2 q4 _7 U/ |9 M; b, R8 @2 L/ a/ Y! @9 n; R: [
ifelse(other turtles-here != nobody)[

! s. U" R/ k! k
. Y1 l7 a, V& F3 u- H# s& G: L2 Y$ Sset customer one-of other turtles-here

* x+ X& W2 M! z, }9 x! k3 j
1 h) h  @8 t  I. v# A# @5 R;; set [customer] of customer myself

& [$ \7 a. m1 ^/ @7 q
0 r4 Q/ U0 }. }7 m$ {9 [set [trade-record-one] of self item (([who] of customer) - 1)
* d) i- X: o- A% m[trade-record-all]of self; M' |% T$ g- y
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

" d* x1 T$ E. g; {
, ^* g! {9 G0 ?2 o2 t4 C: Fset [trade-record-one] of customer item (([who] of self) - 1)
5 B  }% v& l8 o$ e6 r2 n[trade-record-all]of customer

& `' O  ~+ K  p9 {; b& d. L9 T: n4 N7 t5 q% Q
set [trade-record-one-len] of self length [trade-record-one] of self

; K6 k$ Q$ h, a" Y  t/ }) b. g$ h% Q* D2 |
set trade-record-current( list (timer) (random money-upper-limit))
- z, j+ ^5 V  \: k) P5 }9 u1 o

& |/ e1 h' t" J* o+ H8 {3 oask self [do-trust]
6 z+ ^+ B. d  |;;
先求ij的信任度& D* b' _' X! f; V0 u" B# O
' y! M. d& ~0 a( y& \) h
if ([trust-ok] of self)
( |, L- w9 _6 b1 F6 w- _1 i;;
根据ij的信任度来决定是否与j进行交易[2 L' l/ x7 g1 [- }) k
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself% ~* e2 A0 s0 _

* \$ j. ~/ B9 z: N8 W[

' y9 A% d1 q8 g7 C  p+ W2 s
9 N( Q" C& s- ?7 Bdo-trade

) C) r; ?( d0 {( U3 }
3 e0 |" F" F$ S/ [8 V  F' b3 Q: wupdate-credibility-ijl

5 z' K! `, T3 {4 S+ Q9 \
% @+ _% S) |# `2 h  A1 V6 Lupdate-credibility-list
4 E7 b" z5 Z. ~, j+ t# n
; s4 M- Q5 h4 p; L$ }7 `9 q
+ L4 h& k/ h- Q% W) h3 |
update-global-reputation-list

3 e5 F1 s0 O' ]. S
) S# B# S! Z. {. W, Vpoll-class

5 H5 M7 R1 `$ e
/ r  e, y& r& x) R3 Qget-color
) V! ]* J9 T1 w. a8 |

" P9 k. Y& s- f]]
4 u$ ]; u" }3 M( s, G1 j6 y( L  a
( a2 d1 k- s2 b" v9 G: j;;
如果所得的信任度满足条件,则进行交易$ |2 X5 y* G" Y6 _' y8 T
6 Q* o# R# Z+ ?9 W1 w: S% r
[
7 s( ?% P- a; ]

; T9 A; p- F2 r: _rt random 360
4 {- }& F( V; g1 m% E* |+ C% Y

8 M9 ?5 B6 |' C7 D) Zfd 1

2 d! B, z0 g; I% T, |5 l* C+ ~# u+ y
]
2 E+ w3 ~- z) D- J/ n' A8 D3 l; |# M

3 D& ]* M3 ?9 mend

4 R6 ?( R' g8 h# Z  p) O3 C$ r0 D/ L1 N/ g
to do-trust   W5 h: g. b' h0 j! |
set trust-ok False, K* {: n+ {9 p- u7 h  E
3 o/ A8 `0 L+ X( i/ k( S" K0 O
4 v* h4 L9 ]3 f$ B: O
let max-trade-times 0. \* y! O5 a$ D' }; E
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
9 `3 L& q8 ^6 K" e! ?6 Wlet max-trade-money 0
! X+ L& x9 H$ P0 K9 {3 q0 Nforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]( o* _  i3 @1 b, @& \" ]8 J* X
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))  ^3 E& b1 B$ Q" R& k3 ]( u

  q3 P6 O9 n3 a3 T" O: p! K
8 _  r8 G2 g) G' W# m
get-global-proportion$ c. v1 T. I2 b2 x5 E
let trust-value0 g) q2 S. k# \( q" n* n( y2 {
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)

9 |0 g. K; h6 ~if(trust-value > trade-trust-value)
7 M. ~; T" n; x[set trust-ok true]" X1 L) P$ y8 T1 F6 V8 ^/ G5 @% T
end
5 c  T) y5 V- S' W0 t; X/ n
+ E% S6 ?$ e3 T1 X0 K: M& l7 tto get-global-proportion
( \. N# }7 F+ ]9 t' |/ Iifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)1 [, u# K6 H3 `6 U6 p
[set global-proportion 0]
; b0 d. X$ j0 p8 d- P2 k) U, e/ r[let i 0" ]. @) ]6 S, \  \, `
let sum-money 0
- t% E6 T* L& m3 xwhile[ i < people]
  k6 |8 Y& i; R2 F[+ i$ F& K' U0 m) C9 b8 r
if( length (item i
* l+ V# O+ J. D2 {& E! @0 J. N1 r: L[trade-record-all] of customer) > 3 )
) Z3 y- H  M8 }, B$ q
[
# Z: G& }& t& m/ Nset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
' M) J  L$ U6 \% e* A; z* L]# i' ~1 ]; C+ N  x! N) @. E
]' i: H$ u4 z6 t  H
let j 0) D' d5 |8 b0 f# N
let note 0
" g1 }* v, i: C8 j: w1 dwhile[ j < people]4 _7 g7 m2 @/ t0 Q% v
[/ N  |! U+ V) g9 Q: E6 w, ?# @
if( length (item i
! h/ H; f1 j, c0 s. ]; q[trade-record-all] of customer) > 3 )
3 f% p0 A/ g. n, t9 w6 {8 x& j& ^
[4 x. s" ]  J, K6 I/ |
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)' m/ E2 W- [8 U# c6 B6 w& |
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
& D: `0 }+ i* A1 i5 F+ f) f# X[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
6 J, s( x+ g/ W8 R0 n  y3 K4 G]1 a# l0 a& A, A, j+ @* H1 \
]
6 d- F2 f! o7 j: P/ B6 Tset global-proportion note/ y5 @2 s! R& }; }; D, d3 V
]
' _0 E7 k" I; ?6 Bend
$ v( ^, g7 v; l
6 }% m# t4 c' \) N/ }  Cto do-trade
$ O+ e* T. a/ L  U+ K;;
这个过程实际上是给双方作出评价的过程/ Y; L7 F/ ?( o
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
# p# y8 o- a" I. Z0 pset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价3 f1 Z% N+ M2 R; V
set trade-record-current lput(timer) trade-record-current
! N3 _' @6 X7 Q7 A" t3 i;;
评价时间- Z$ U$ s; H2 ^/ O. |
ask myself [
7 |* Y; B0 C' mupdate-local-reputation
; o! B3 y+ f5 ]7 W" E: a% E8 s/ rset trade-record-current lput([local-reputation] of myself) trade-record-current
8 c9 }1 f7 b: \' e2 K]9 d4 ?% g4 F# Y3 ]
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself- j3 Y3 y2 t7 v
;;
将此次交易的记录加入到trade-record-one/ ]3 ?9 S/ `+ K" Y0 L
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
* q( w$ Z" t* Y- m) i/ L3 mlet note (item 2 trade-record-current )
; h% j, |$ |  L- M( Y" wset trade-record-current0 F/ S8 W$ s, x8 i# u
(replace-item 2 trade-record-current (item 3 trade-record-current))
( L% H4 M% n& i% D) ~/ w7 B
set trade-record-current8 r" \0 a8 n' h+ j/ @& Q8 B
(replace-item 3 trade-record-current note)
& ]$ E( U! y/ D/ d- m* Q% ~/ C/ |3 M9 s3 J7 }* ~

$ g' O7 Q8 L% |* }* d# K% hask customer [( `9 V& i( y  i0 L0 \
update-local-reputation
6 I7 `& v% m5 W) ?! U# K# ]set trade-record-current* L5 @; V% [/ B% A
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

/ ~+ Q, u- h. d4 L  C- L  w2 E]6 s3 K5 I  V( E( e& F! n

- E. B2 Y3 Y4 Z4 k
1 R0 n3 l- N1 N/ m- P
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
) t: F& p2 L% P4 f
4 g  }3 H( b2 j
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
* N& s% Q8 T: U! i1 _;;
将此次交易的记录加入到customertrade-record-all' Y/ ~' s$ n, b- `! Z
end
5 ]4 W  |8 ]0 L
* v$ v. o5 a. Nto update-local-reputation
! |+ k4 \# t0 {0 u: _. [+ `1 {set [trade-record-one-len] of myself length [trade-record-one] of myself) R2 ?& ]8 x/ m; A. X) G
6 l  `- ~( O8 R9 A. S+ M5 L1 p

5 Y4 f( d: D! s2 B4 Z7 C2 O;;if [trade-record-one-len] of myself > 3
5 [+ M# Q* t9 S. ~3 Y
update-neighbor-total
, w% N( c8 w2 Z( i! a7 s! I;;
更新邻居节点的数目,在此进行$ o* u: y2 S, j9 K! c6 b# L9 l
let i 3
4 z! |. J1 E2 U$ ^( n9 n5 jlet sum-time 0) S4 R# ]" U: M- l" X9 p# M
while[i < [trade-record-one-len] of myself]1 n0 k& {, a6 }# \3 X
[
' v" y) d$ d, G. _set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
. I0 S$ X& q- Y& `& |9 uset i4 g) }4 e# J6 l8 o# q, _
( i + 1)

$ j" ^. _- s- d) g& S7 q4 D]) w5 I/ `' ]9 [) N2 S; i& F$ l! S
let j 3
5 ^1 o/ X$ c0 x) \: J, d: j. ylet sum-money 06 l# c. m) e( b+ w, E
while[j < [trade-record-one-len] of myself]7 @) u: X9 J9 _0 ]- k7 Q
[
4 R0 f$ b: m, d* y& Fset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)2 P$ F; t* \9 C5 R9 T, {: K
set j; B7 c+ }7 ]3 q9 j/ K1 o0 L
( j + 1)
7 P! ?- q0 p0 P2 Y
]1 u6 g/ o1 k2 Q
let k 30 {9 D% l# P4 X4 f+ e% A
let power 0* V% x. d  F$ Y& F
let local 0  c: t* x3 H/ q, r3 N- c; a
while [k <[trade-record-one-len] of myself]7 R1 D7 `; q) s* v% Y, l
[
& _, A5 k8 j2 e& Iset 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) ! Z: K3 G4 V9 e* j* ]
set k (k + 1); I8 k7 t: `4 ]
]6 @) o9 n% g7 x  W  B4 z
set [local-reputation] of myself (local)( H1 `( o" F0 r
end9 A6 H7 z/ Z! m
- F3 A- J3 n/ H+ \: p% _
to update-neighbor-total
5 A% A( n/ D6 N! Y' T0 C+ w# K
* S- q& u7 x- A" e  o9 }9 W$ N9 {if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]0 i0 a" k' a' _

- {  s. K% q& x

1 m  a# |) w0 s" ^' V4 qend
; T" E1 [. a6 c
8 _6 H6 w( b4 {) r( R' @( Yto update-credibility-ijl
% Z8 x- V( a# R# J' l( ^3 o4 m! q2 ^8 v: n( H( Z
;;
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。+ N: l0 u# S0 F/ c* H( M
let l 0" v- @/ \; s1 }: b, X
while[ l < people ]
9 K9 @4 U% t2 n1 Y;;
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
% q- f  G4 B2 d$ F: N) D[
, s, [% l) o! ]0 b2 p0 _; H% G" m% elet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
4 [# c: w) D; T6 Q7 M& h2 |/ Tif (trade-record-one-j-l-len > 3)
* Q& X% A. d' A' Y9 k8 i& t& a1 v[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  V# J* n4 k# Z" {
let i 3$ Z& g' k9 S$ ?- ^3 J7 b6 o
let sum-time 0
6 e7 i+ I/ n& {* Qwhile[i < trade-record-one-len]
, {/ w; E- Y4 a. B+ H, z0 X2 ~[" \0 X# @/ A5 h! a& V
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )& l  n+ [5 N( ]& z. z) @
set i/ e* Y# o) P& }& ^% ?
( i + 1)
% y7 @/ c+ z! u/ X
]! p5 b; n; e- B
let credibility-i-j-l 0& `7 c" f; x; Q+ J' x
;;i
评价(jjl的评价)' Y* V! d9 J; D. q# }% t5 u2 @% t; _
let j 3; ~8 \9 ]% U6 x# x" \; L
let k 4
& D, q2 k% M$ A, X- Jwhile[j < trade-record-one-len]
1 W/ P( x& M! m8 m9 l[
3 @" p: Y& S, F+ T1 twhile [((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
8 ]4 d' m& h/ f" ^' j- g2 Z; i+ Sset 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)/ w7 y% o1 R5 [- t* a$ U1 J# |+ _
set j  h5 H; ^' v+ j' |' V
( j + 1)

; h; R+ J0 p; i; N]
4 _; C/ T+ }6 @9 s: l! a# bset [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 i2 u0 t% d8 i) `9 X) ^7 M
/ Y; W/ v1 n- T; Y3 E! p3 Q
) p7 M5 E% s3 W' e3 v
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))* ^! @  l6 b/ p: l! M( d! d" \
;;
及时更新il的评价质量的评价$ }8 X/ M. t1 C. p# p1 M
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]) C3 q  y! F) `. P! ?# c
set l (l + 1)
6 v( U2 S5 e) q]1 ]. V8 q% [' C/ d( U
end
9 A& s9 A( C9 a9 v- k: ^
1 A% W+ y3 h- F( a( Wto update-credibility-list' v% P1 ]$ [9 O. m
let i 0; w0 g$ T7 @* b) G6 B
while[i < people]
4 b, A. T. V( I$ h$ [4 D[, n8 _0 h3 ^* ?( ]& V2 F& ?1 ?" Q
let j 06 Y+ T1 V9 i' E5 q8 T
let note 0
& z3 {0 w' e& ?8 ^) blet k 0* r9 c* [7 v( z, E! ?: d
;;
计作出过评价的邻居节点的数目3 i1 `/ H4 _3 Q0 d
while[j < people]+ H( ]4 }4 y- V9 D
[+ S% S0 w) c4 ?# K5 E, k
if (item j( [credibility] of turtle (i + 1)) != -1)7 [5 b2 ]1 t! m: i7 Q
;;
判断是否给本turtle的评价质量做出过评价的节点7 x& ?: w% h' E* h. {, t3 ?
[set note (note + item j ([credibility]of turtle (i + 1)))
1 f4 U  q$ w1 M' n; h/ n;;*(exp (-(people - 2)))/(people - 2))]

3 q4 c# V* y+ A9 ?! ^) L/ jset k (k + 1)& C' X9 w. r1 g2 l
]
; E; _" ?; q& b" wset j (j + 1)+ O# H/ g5 d9 y( L3 X0 @
]5 B, ~8 I7 l3 B) j6 E1 e
set note (note *(exp (- (1 / k)))/ k)/ M1 Z$ p2 o) v
set credibility-list (replace-item i credibility-list note)
* b7 V3 Y  L" Z  L/ sset i (i + 1)
! _, F# m; `/ q3 B4 P& l8 p( @5 Q]
- ^+ |! B/ _7 K: Nend, _4 ^1 S7 w, D& K- }$ n

0 ]! r4 F* `' P* _/ J/ b" jto update-global-reputation-list. h: v. `/ X( N/ {/ p4 D
let j 0
% {# R$ r( |' m# n( \  i) jwhile[j < people]
) S& o3 A- P1 y[
' A! P! {' L& B& jlet new 0
6 n' \% \9 N: \6 W;;
暂存新的一个全局声誉) x' H$ n. y" U# X* m
let i 0
. J& |; C7 ~0 q0 c3 z/ _6 ylet sum-money 0; ^. F: p7 z$ u! [& w0 w
let credibility-money 09 _6 @, [: R1 J. C
while [i < people]4 O# \8 `; |6 l9 ]/ i
[
6 t) a: X' V! |! }set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
& K; K- g) f) A3 M  Aset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) H* k# C+ x+ f9 u7 x  W
set i (i + 1)' U& }2 e. Y& y9 o; e: }+ h
]
: y- O0 W2 P! g, @& D6 i, @1 s; a. zlet k 0
* P! T. v0 T9 t% Q2 Hlet new1 0
+ |2 c  m0 [3 B8 hwhile [k < people]# s8 Q7 [  v8 ?$ f. q6 x5 ]
[
6 H8 C0 [( d$ K/ W+ Tset 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)
/ Q) z0 S3 t* z' [2 v  ^set k (k + 1)* A0 `' F! y, e- y& Y
]8 X' h- I# x+ ^8 S: c1 X& p. r
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
$ G. N+ A, y( y: e$ F/ kset global-reputation-list (replace-item j global-reputation-list new)
& ]) D9 e4 J1 n# i, y$ H" sset j (j + 1)
3 x. R1 }0 Q; e8 f9 u* b]
9 C  F$ ~4 p; Q' V& q/ mend0 N7 S0 q$ H3 h2 c& B$ y; f7 V
  A1 i5 j& n2 f" K, C
: w6 R' }6 E, w. z) G  U
9 E3 \; ?! E6 \; M8 [, A
to get-color
4 b) F- c$ d' @
  u$ ^, H3 \  s) K3 M# Rset color blue
' U+ J% j3 A+ V# I
end4 U* Y8 M" G5 s' l. |8 N# w
/ {0 {' @3 T  U/ |
to poll-class
8 O# K2 ]- r! u+ [0 A6 Send
2 x  |& G, `# T" X
1 |: G* U: R3 n+ vto setup-plot1+ q, K* }; I' {
! l* o$ M/ q; c: J( e+ d  t
set-current-plot "Trends-of-Local-reputation"
, l+ {' @2 [* Y9 ?! j. s

# O; L- C6 k/ o' Dset-plot-x-range 0 xmax
& p* E  u% Z3 F7 [4 i. Q

: G  b3 z% K9 w% rset-plot-y-range 0.0 ymax
- s5 r% J6 Q0 U8 b$ c/ t" r
end; E/ }* i8 B0 D- {1 O& p# o
/ k+ i8 B0 z! ?, W+ t
to setup-plot2
* b4 I% w- j% m2 A5 g& C' `3 a7 B# U3 v$ w( s# v6 a
set-current-plot "Trends-of-global-reputation"
: T" `" g: f+ _$ k  K7 S  Q
$ S" s. p: G1 i. Q( J6 \+ L7 c1 p: k8 Z# ?
set-plot-x-range 0 xmax
7 G+ N: v- R! S' J

3 [% m1 u3 C- C- ?5 u. nset-plot-y-range 0.0 ymax

2 E( _) Q! W. a- M  |* L4 oend
* Z+ W! e8 J3 O; F7 L0 l5 B5 b/ D3 @" R, w0 l
to setup-plot39 Q* B* W' T7 [3 ]
7 `' e3 ~. G' k8 d
set-current-plot "Trends-of-credibility"

" j% x9 L/ S. W2 m7 P% x* b! ?1 [4 ~2 |+ B4 l( d" j/ }
set-plot-x-range 0 xmax
7 x/ `3 w, @# c& L: z1 u& e

; V, K( M; L' Uset-plot-y-range 0.0 ymax
: [( F  A5 l" k( H; y
end. X# l4 e* q3 ~% c1 H! U

2 O0 l* h# v" P5 ]0 Sto do-plots
* s! Q: ~" u# Z* V- S$ {1 ~set-current-plot "Trends-of-Local-reputation"
5 {' H9 H4 q6 p/ Hset-current-plot-pen "Honest service"' O, l2 u7 V. f" q; y& J
end' `8 n) n1 |4 D3 w% z5 \. a4 f, q
, q/ L$ D# k( Y5 t+ 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.
# _3 @( J) e) Q# R3 P6 W+ {
* j9 ]* b6 X6 d; B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, 2026-7-6 03:31 , Processed in 0.019980 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