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: 13567|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:1 J. B- c4 y! p3 h. v$ |
to do-business 2 Q. f& ?, ?! Z0 R2 Z
rt random 360
, u  G  M7 E/ I3 L5 _ fd 1  u" Y0 A$ e4 z8 }9 o  }8 `
ifelse(other turtles-here != nobody)[
* b* M$ b, Q: |# K. p   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./ w7 x4 F, w0 k" e
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    4 H8 N  N1 k9 d% m8 I' v
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer1 t" r; Y' B) P
   set [trade-record-one-len] of self length [trade-record-one] of self
* @* }% s$ h2 J- x   set trade-record-current( list (timer) (random money-upper-limit)); v+ R% i. f7 L6 M+ e! Y3 T
/ J1 E1 Q$ X( S  }$ r1 X  [
问题的提示如下:; z' W' r& L; p- K9 Q

+ K7 C, _$ t! p- n2 o4 `" F% `error while turtle 50 running OF in procedure DO-BUSINESS/ ]9 g& ]: h3 b) Z' I
  called by procedure GO8 J, w" O0 _1 H+ V, C! c
OF expected input to be a turtle agentset or turtle but got NOBODY instead.+ [# A% |9 B2 [6 M8 O
(halted running of go)
1 T* y1 o) t: z/ g# L! `7 X) S0 l- e# w9 g0 N% w7 b/ Y
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~~5 `& z2 m) E6 U4 S
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
; S: i( i3 E( w# Aglobals[
, T9 @% X) \3 Q2 u( {1 Dxmax- n0 U: \- \& n
ymax5 y* p7 l- l) b' s: m0 L' S
global-reputation-list  A+ V" q+ F% r, i6 @# N) ~4 u( q

9 u: x1 c. B' N$ H+ Q! O;;
每一个turtle的全局声誉都存在此LIST. i* s. ^. v5 k3 a7 c" N
credibility-list
4 m/ m+ h  f/ {( e% w;;
每一个turtle的评价可信度
8 V  u: @  Q9 H5 c) Ghonest-service5 o. G8 Y9 H1 `$ m
unhonest-service
( Y3 S. }3 @( s4 B( x( |/ Koscillation  y- ?  Q3 S* q" h/ E0 Y0 {7 y9 ~
rand-dynamic0 k7 a1 w7 t( j3 Z
]% D$ [4 }6 h. n$ g0 |
7 ]2 U. g, @* J, }7 F8 V
turtles-own[. p& o  O1 u* x1 v  U: b8 ~
trade-record-all
$ K+ J/ g1 X' p7 O8 |3 S! R; M;;a list of lists,
trade-record-one组成
) v4 T& q, e# Htrade-record-one. ]( ?  c. C1 j/ c% u
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
& i' H2 W( M8 N& S. l7 [( C' q' _) o, ]. \6 X5 \
;;[
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]]5 a) C6 x( R! U% [
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]
, U. L6 s9 ]3 F5 z, dcredibility-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( W& D0 I$ d' y' k3 ^6 l$ }7 u
neighbor-total
* [6 y, o3 s7 i9 F6 s;;
记录该turtle的邻居节点的数目
4 w( }& }2 D) x: W: z- }trade-time
0 d1 f8 X" A( m! @+ Y! X6 R6 C. N;;
当前发生交易的turtle的交易时间
* T# K  T* a, C3 ^1 A! Gappraise-give5 F& n$ i# _3 [  Q
;;
当前发生交易时给出的评价
" _/ D: z( q  }7 P$ G( T4 ]appraise-receive
5 F9 I$ J- B/ l: y1 `1 y;;
当前发生交易时收到的评价: c5 I- {5 |! l+ S- [
appraise-time0 Q2 w& G7 L9 b4 A
;;
当前发生交易时的评价时间4 w* Q5 f- ?5 W
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
/ Q# j4 N7 \. e4 n" htrade-times-total
4 x1 A! d- K* @8 y;;
与当前turtle的交易总次数
* L0 ^  L+ o8 Vtrade-money-total
& K9 f- l( s" s. {& J+ k;;
与当前turtle的交易总金额
6 o3 r! V2 X- j+ glocal-reputation
$ G; ]; I2 A/ a; H" [, G6 f( Lglobal-reputation
$ i4 Z6 I3 ?8 u/ O" F/ Hcredibility& q+ i! t" e0 E; I4 T! g# ^
;;
评价可信度,每次交易后都需要更新
2 o. P: H5 ^* M$ g) X7 }3 D0 F- hcredibility-all. \  N% V' O9 A. |& G, q: J5 ~
;;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/ P0 N7 |( `0 t5 ^
- D0 N0 O" \" j0 r. 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  D; \3 x# T/ n, G5 v* D0 ^$ A
credibility-one
+ |  M  L* f+ \, D6 b4 w) j;;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) ]0 Q2 x- O4 s7 N
global-proportion
# v( X2 X3 Y: K! U0 [; rcustomer
2 X7 u* v9 H8 N9 c9 j! Q0 v" Icustomer-no$ u  x9 ~& E" a) e
trust-ok9 |8 }: r/ s! r" L; I4 x0 O
trade-record-one-len;;trade-record-one的长度
7 a. j# y( z% O" n# `: G]8 r3 ?& A% J4 l* M( |
, b" o5 W" T, A* w4 k
;;setup procedure% d* H. x6 p1 m* w

5 H6 ]# W. E3 a$ j- ]8 ]to setup' ?. w3 q  [) E; K0 A- K4 m
- q4 z! @( X: m+ d
ca
& I8 w* v& `3 P6 _* y( W4 g
! q2 b4 _/ R( C! U3 c) u) v; s
initialize-settings

- b0 k/ Q- A( h7 n* u+ m/ u7 y3 V9 D7 a! [
crt people [setup-turtles]
6 ~7 F# D9 v6 }  K
. m  ]& I; b$ d1 [4 O, C! _
reset-timer

( o# [5 W0 Q# s) n" X$ l- T* J& C/ G0 t
poll-class
8 V  Z- y: Q% ]2 s6 m( l5 z

8 }% N2 h# X2 g( t/ x. Bsetup-plots
& R' B8 D: k4 r# |# r

- B" O, A# R: w0 R9 T& V$ S9 ~do-plots

& w: j1 |! b4 p+ t* x( x* wend" y3 \, c: F. ~3 O' I9 S  f. ^

$ _' C) T7 J$ w4 a( n5 Ato initialize-settings
1 j! F4 R* v+ f( O( E5 n8 g) R* Q/ `0 Y  @! v* O9 @/ h! J& B3 R* l
set global-reputation-list []
6 W8 ~) B  q" F+ F7 E
, C+ Z) @# l5 D5 D% \8 t
set credibility-list n-values people [0.5]

  q( N: N1 e  A0 i6 r' H0 b/ R6 r4 S& C% h" X" B
set honest-service 0

6 ]+ X+ w/ ^: T+ E8 p7 D: ]# O; [
. n* C2 U" c# n( A! G; w+ k2 W+ [set unhonest-service 0
- B# i! [1 V+ M: q" W
4 I" S, ~1 p: k  u
set oscillation 0

7 Z3 S# F3 O) y. S5 ^$ ]4 Z; C' o
set rand-dynamic 0
2 J& m8 r/ B; i6 i* w% b
end
$ A4 c) l3 E: r; \0 v; X% ^5 m/ g3 f; y* Y9 g
to setup-turtles - C8 q- Q! {2 A
set shape "person"
  M) p: h. S1 S3 X% y: W) M- u. }setxy random-xcor random-ycor
9 A2 L' ]* z1 y- D) T4 x; o8 Z( Uset trade-record-one []# h9 X( ~$ H/ f* g, }

6 y3 D- t: y8 h! Iset trade-record-all n-values people [(list (? + 1) 0 0)] ' \% C  i& ^% }+ d2 U
: ~* d; x0 b( X) O
set trade-record-current []3 ?: I  d' h! Q$ U/ R
set credibility-receive []5 V& @& o$ g! n$ ?
set local-reputation 0.5
( x9 P# Y3 i, ^, y# k' E$ Bset neighbor-total 00 p( r& h! @4 X$ _
set trade-times-total 02 P" u7 ]7 q6 E: L' S
set trade-money-total 04 X: X$ U  y) r1 u% r
set customer nobody
& a  A- Z2 f. ?. U0 vset credibility-all n-values people [creat-credibility]
; X  V  c% {; q. {+ L- r  q4 Jset credibility n-values people [-1]: F  M8 m- M0 n  W0 \
get-color
+ y& q: ~8 A1 ]! z

* S; X) ~" _, m. @# p7 Q0 @  ^* Q  K* Oend
2 b& N8 r, A7 D- ?3 x9 G
  a! v# g8 j  M. L" a: ^to-report creat-credibility
! Y* U  z8 q" xreport n-values people [0.5], ]8 M& Y" v4 s1 f* v
end; H1 }4 U( j" g" n" S' O

) @3 g, v! K7 ~* v9 g' Rto setup-plots; k, M5 Z' a; H  O  i3 \

& F. j" I$ U! b  ], T5 Y% Gset xmax 30

" z* w' z$ y& A7 O2 {4 D7 S! J4 P+ V/ Y  |
set ymax 1.0
& y: J" d" i. L2 M+ {
& p' v5 `4 N( Y8 A( P& p$ G# V0 t
clear-all-plots
! ^% M- X) ~( U; V6 o6 U

& k6 U9 E+ o4 B( C3 ]setup-plot1

  [0 T) J0 @3 h; F/ F
2 F% Q, H2 n/ f; q, n! Isetup-plot2
# E" S* N8 ]# W5 N
9 g0 H8 f" J2 `6 D
setup-plot3

- E0 H) I. l# W+ W! |7 l4 tend
  Y4 e8 Q* U) \3 ~6 w7 f; x8 U8 z% I  M5 }% Y2 e0 v
;;run time procedures
& s& R. Q" \/ N
( C# R2 S7 r9 f8 {% N( |- Cto go5 b0 ~" [6 q' {: G1 T4 E' I5 C
, H2 n* e/ q, s& ~1 `
ask turtles [do-business]

( `' j+ p' H+ F6 |6 N4 l) vend) x8 b/ ~! s$ z
7 C+ W  h$ G% |5 m' \: F) u5 M" c5 `
to do-business
6 ^% I- [, q, }3 K  A

% b3 _2 U0 p4 p$ t. W
0 S) G# s' T0 a" y) C3 qrt random 360
5 M8 C$ G) R+ e3 [% |& L
" B! j( n! P$ K: \; \: g' h
fd 1

8 O3 _8 z8 l  m0 p2 b3 i$ A, L; q5 ?2 w
ifelse(other turtles-here != nobody)[
2 ~3 B- A+ E. ]

8 x( j8 T/ r) Eset customer one-of other turtles-here
6 s1 v6 z7 ?' a$ N
/ k5 s" F* ~& T! M
;; set [customer] of customer myself
" E( ~6 {& h7 K& F% f
6 K9 P$ @( B1 [1 T6 N5 I
set [trade-record-one] of self item (([who] of customer) - 1)
3 ~8 |' I$ I+ c+ B$ ~+ C: S# I[trade-record-all]of self9 D$ W% E5 s/ ?, D( a. ^8 Z% r
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

, n9 T! _7 T! f/ r2 H; ~
# p1 ]  `. u3 M- _; \set [trade-record-one] of customer item (([who] of self) - 1)
! {9 |, A( m8 X[trade-record-all]of customer
6 ?4 _, j+ d4 H+ M) Y1 j
3 y3 ]2 M' D3 J3 N
set [trade-record-one-len] of self length [trade-record-one] of self

& E% W) o; q1 Z: r$ X
' S) P2 g% K3 sset trade-record-current( list (timer) (random money-upper-limit))

$ e2 |4 y3 A% B9 a. D) K
0 j" W# d% B8 C. nask self [do-trust]! {3 F* _# q& W& ]
;;
先求ij的信任度3 b+ g" @" [) a$ w- E
& F) U# ?4 l  ]' C, \) B
if ([trust-ok] of self)
0 P1 F4 g4 c) q: |0 J( H; K8 @5 {) T1 }: I;;
根据ij的信任度来决定是否与j进行交易[
9 Q- W' s/ R) o* Gask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
! g% D; `* p$ T7 `4 y0 H# l$ {% F$ R4 x8 q/ e! Z
[
% V' C; v, f1 l9 k: U  w  k: Y, l. Y
( V  b4 Q2 l- V; A! A8 G
do-trade
7 ]- I% i3 K. x; n# l# |' ^
$ e: {0 S. V9 ?, {  u& {: ^5 Q4 h
update-credibility-ijl

+ v4 D- F- J& e% g* j4 E
3 z: d% R( u  J! R0 E* M% Cupdate-credibility-list
3 D2 H4 J0 h/ L$ j/ s
3 @8 O  \& T+ d0 v: t
- G# l; N$ i2 F0 ?1 @& k+ L
update-global-reputation-list
+ s3 M; W; j$ x" A% Y8 Q
6 ^1 h0 a# w5 m3 `$ @! ^
poll-class

4 w+ y( d/ Z+ O. M8 u; Z
0 s& R+ Y! x  j( V8 u5 Jget-color
4 D6 e* w* T4 v1 i

. K9 p5 Q& g1 {/ X1 w+ Y  V0 M]]
5 \1 J# v* ]0 a7 }& \- f( @3 [/ y& z$ K% }: H% W$ [( e9 t
;;
如果所得的信任度满足条件,则进行交易
$ x+ }5 P0 P( n  y8 U! J; m3 F, b5 O9 y6 E& }+ `
[

# z& P7 @' C; [  _9 T8 E/ t/ F1 B# z2 C, J$ f& s& P
rt random 360

' z3 h* K1 e. o$ W, p7 M
8 D5 X9 z, S& `1 J0 lfd 1

# o7 A# o) e+ I# I' \
3 }/ o! Z2 J$ v' ?# F]
+ y, j) U; M0 s6 x  J2 T

/ I0 O; B5 o# O, [) nend
6 a; [' T3 U1 a# z9 Q

0 N! j' y: n% J2 {" ~3 Sto do-trust
; i; @# R# a- z& B# o! A5 mset trust-ok False  j, _9 [+ S2 |; O

% A) S4 c; E$ V7 k) r

8 D  u9 c( M% a6 K5 s1 Nlet max-trade-times 0+ T- ~, @, O6 P$ |0 X
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]( K5 q8 B! G9 h/ V3 O8 m8 A& p0 G' w
let max-trade-money 0
" n8 ?; b6 D: E" T" D( lforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
( @- r' O# \( V$ alet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))# u" W: F3 O$ T0 U' d2 ]+ ^
7 L$ \8 n4 i3 _4 ?. O- q

$ H; ?# l' t0 q8 Pget-global-proportion
* t* M8 T+ y  l( ^9 S: Ylet trust-value, S3 b  d' |+ N! Z
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)

. \" ^4 C/ D' o  H5 `6 ]if(trust-value > trade-trust-value)
" l) w  w/ D, g2 f# d) h[set trust-ok true]
# r; P. T2 V1 J' ]end3 N& }" i& k' v; ^$ h" y3 E
% o! J9 t. Z/ l6 @+ \: J
to get-global-proportion
  [. i3 g& h0 R) X- d$ _4 kifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3); C$ w  c7 M) Z% q: Q: g
[set global-proportion 0]
. I4 \" k# J1 x* w6 @4 ?[let i 0$ j; `4 b9 s, b9 r: T8 i- ~
let sum-money 0
% J  g  ~7 W! K: u% {while[ i < people]* p+ M/ e' R) C
[" o! f' S+ f3 B1 n
if( length (item i
7 _1 N  B2 J0 }% R9 W2 i[trade-record-all] of customer) > 3 )
* Q. Z7 {; V* W  S( |! P& C. a6 I* |
[
* {. v8 X2 B1 ?/ Iset sum-money (sum-money + item 2(item i [trade-record-all] of myself)); g$ N1 v4 M- y; G+ W7 M! r
]
+ W7 N' E+ s4 n]- O* b% O% a4 c
let j 03 o' X* H: E9 _0 y9 n9 S- R8 q# @
let note 0
; L$ E6 J" N9 w, b3 [8 }9 R5 gwhile[ j < people]$ \2 _( u: C% ~. i; h- ^% g0 ?0 V! G9 C$ @
[- b) h) C) [6 F1 B
if( length (item i9 d. O" y' ~7 N7 G
[trade-record-all] of customer) > 3 )

; F& A5 ]1 P: r[* I( z- g) y8 s& u( x7 z( d
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)- e* X( a, z2 H4 e0 ?4 z
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]8 S# Z2 t6 Z) L
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]/ l; |. o. j: J) n  ]
]' J9 K) q$ a" d9 s+ f
]
% k' `1 ]: L* ]7 @7 zset global-proportion note4 H# Z4 ]6 e) j0 a1 @) w
]
' ^5 u( |( U7 {0 z$ D2 g4 Hend
9 v$ s0 M) S% W  T" [
+ k; O; \' Z0 `: N) Nto do-trade7 x. v8 J4 _$ m5 \
;;
这个过程实际上是给双方作出评价的过程# M" F. n* ?+ _) Q0 \
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
  n' m9 k& h+ D1 n  A& l2 @set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价- C* g* N( Y8 M- S1 N6 y
set trade-record-current lput(timer) trade-record-current% o0 {0 Z5 B* B# x& }. r4 z! t
;;
评价时间9 S$ g" S8 z% T; b# o
ask myself [* Z; h4 {4 V$ \
update-local-reputation0 F! t+ Z5 \+ f5 d1 o
set trade-record-current lput([local-reputation] of myself) trade-record-current
: n2 {( N( I. K( P' Q! Q# j) `]* O1 v* h# d* r/ i9 D; j8 E! \
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself% S# y* F1 {" b- \/ _
;;
将此次交易的记录加入到trade-record-one+ ^- P& w. q* m8 i# f
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)6 P& t, {& G3 ^8 Q
let note (item 2 trade-record-current )
" m; G5 s6 b8 L7 @% oset trade-record-current
0 z0 G9 y6 h+ ?" P0 P; a2 E(replace-item 2 trade-record-current (item 3 trade-record-current))
! m% t" `- j  e+ I2 l& T9 v) ^' H+ H
set trade-record-current
- j; L% a! R4 y/ u(replace-item 3 trade-record-current note)+ F6 f0 G" p3 e. ]5 l4 i5 \+ X
, I3 h' t/ |9 `7 K* u
/ y( E& P, T$ {# b6 N
ask customer [2 x0 F1 B5 N0 h/ X8 r
update-local-reputation8 z' K/ A9 p4 |6 o9 a
set trade-record-current
) T7 L: }0 `+ ?6 e) _5 S7 X(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
. v3 c: {0 o) N( k2 b% o
]
& U5 d3 ~8 i, J) ?; q( T, I
+ m  i+ S% ~. h) m: {8 R

- B' r# [6 _$ C  i0 R. Y0 aset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer6 k! \, d4 C9 A( T/ w
3 S- i: k' h3 G
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))+ Y: B( g9 i1 e7 D
;;
将此次交易的记录加入到customertrade-record-all/ r" _5 Q' r4 `, {4 ]
end* H( o- Y% @' o: I. _
. b1 x* `6 h2 w' I; {4 g
to update-local-reputation
; d' {7 W) T* s, b9 c6 [set [trade-record-one-len] of myself length [trade-record-one] of myself
2 e" v/ u, S  l  n. c8 M- _# f( k* r. r6 w- o: Z6 v7 G2 {; K
0 W, ?; ^) O6 M5 L( y" G
;;if [trade-record-one-len] of myself > 3

2 w+ O. c% @+ M( d3 X, S) Oupdate-neighbor-total/ X8 L' N, ?/ _  k7 F) {
;;
更新邻居节点的数目,在此进行
. o  n- [9 g$ e4 x1 q# Z  D) e% hlet i 3. C& \* Z3 e  R& P+ H* |; F' P2 a
let sum-time 0- ?9 u% `5 a! |' h0 M+ N8 ]; b) G" ~% o
while[i < [trade-record-one-len] of myself]
$ i, u5 @) E' t! ?0 \[
' V, j; f( Y) d( L5 v3 X: X/ jset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )! ^) M; g6 G0 g8 W9 z& E
set i
* r+ `* Y# n( U- T( i + 1)
& [; ~  Y; i+ [2 q; O$ ?
]
* k( N5 ?+ ]" c6 E* a) klet j 3
3 N5 T( {$ X& [9 _0 [8 }6 r( P) g) llet sum-money 07 I* K7 j+ a, L# ?( @9 `
while[j < [trade-record-one-len] of myself]4 }% f  f7 J3 l: R  J
[9 g( w) ?, c# q  o4 D2 A& S
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)
1 {$ H6 @& m6 cset j7 K/ e4 x/ B2 X' }) D. e7 y
( j + 1)

% e4 [2 `* v& {- A; M: K* D* ?7 B]. D0 s3 j& z3 H. G5 O" v  H: @. F
let k 3
$ l7 E" t3 q/ b3 x1 k, k# Blet power 0' r* ~; m6 h; g. H6 J& L
let local 0; ?8 i# M& O* P4 v; b
while [k <[trade-record-one-len] of myself]
* _1 n1 b# O  T0 K3 L2 n& j+ C[
/ f! L/ s6 D  t) n, Xset 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. P! |( |2 Q- k: c0 f1 iset k (k + 1)
3 H+ f5 u4 H  ]3 V$ z: M/ V]
) K! |8 O# a4 C9 |1 ~! U! h- Qset [local-reputation] of myself (local)% q7 i. m. |  h/ P6 ?9 m) ?
end2 C; q6 Y- ?0 M% f! H+ Z

8 V5 P7 |3 e3 \3 lto update-neighbor-total
0 [1 p: A3 q$ ]. P) X9 N  @4 J  k# s  [% B0 o
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
1 M) _) d* p' K/ J. a8 ~6 W7 _
$ z& u. g& Q% W3 p4 d" i

. G1 J( S" y2 x1 ]  r$ Jend7 r9 w& C. x" O# P

9 r0 _7 y- k1 _$ Rto update-credibility-ijl 0 u( e5 p2 u, x7 h# h6 m4 C

& w% g+ [2 w+ I, d, ~: f;;
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。$ Q5 h) M* c- r) R
let l 0( x) w& t1 j9 C  n  r. I8 I1 O- N; i
while[ l < people ]
, B' P9 Z" S% j3 a;;
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
% B% I/ f' R  ^[1 }7 T' z" G& `% e& o, u
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)$ p5 [1 v: \0 p6 c0 t$ T- _7 I9 D7 i
if (trade-record-one-j-l-len > 3), I* i4 ~' y+ E# t) j
[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' J* c4 _+ J0 P" `' C& u
let i 32 S0 @$ L0 Q2 G# x* k4 Z2 [6 S
let sum-time 04 R  I; T  I7 [$ P. s, N
while[i < trade-record-one-len]8 S9 M( F4 M8 l+ b. |& N
[1 N" ]1 r: _- Q/ L  E
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
. I# M7 S: A. U" Y! Cset i5 c+ \  y0 ~/ n# q! ^
( i + 1)

2 q) N  K! O3 U7 E% H2 j6 C* ]8 d]3 `7 I; C/ Q& M
let credibility-i-j-l 0* y( Y: n% \. y' {0 p
;;i
评价(jjl的评价)
- l6 }2 N( J1 M1 z# Q( klet j 3
4 n, r7 M5 S) rlet k 4
: J4 w; _) T" n  K: T" ~: P& t+ Y% kwhile[j < trade-record-one-len]' e- {' y* }3 R, Y& F/ x7 @6 [
[
* p  j9 t7 B2 l- N- ]6 Ywhile [((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
) i& H' ]" D& q  Jset 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)7 o. F* ]9 G6 \! H% i& J: n, p# I
set j  t, h. w& P- k3 V! y6 w" R4 g! L
( j + 1)
7 V; o3 S! ~! S1 h, G" c1 o
]
2 F+ c, B7 J7 m( n0 @& _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 ))
( Z9 b# F$ S. }  o/ r" Z! F, H: x- W
6 ~) H4 _( _; z- R
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))+ m  k' f" `5 r9 |0 S2 o; X% W
;;
及时更新il的评价质量的评价
+ a# T% X5 C. V, F6 oset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]7 A! Q. [' Q& N# Y
set l (l + 1)
& x: O  h, I0 L! R5 o) }& q]. a: ~8 g" g( i$ {  p
end7 V+ j6 `! S+ ~2 N3 g) F' j
% B5 q) K6 C! V+ K6 u# {
to update-credibility-list
, X! E* Z2 p7 B. j. w0 @0 Ilet i 0
$ S* M, Y1 ~1 Q" ywhile[i < people]
' F. I! v% i, r2 Z5 o* }" P0 q  h7 _[* H; [5 L' U$ e% `- ?
let j 09 |3 _1 |3 E2 ?9 n, y; K4 Z
let note 0
4 k$ L( n  R5 C' {& U, u; m1 Z( Dlet k 0
5 K% R0 H7 S# Y;;
计作出过评价的邻居节点的数目
; E$ U! D" _5 w" @2 t0 P! S- gwhile[j < people]
5 c. x% |1 q. k2 B$ x[
- q2 U$ u: E, R0 V" Pif (item j( [credibility] of turtle (i + 1)) != -1)4 T/ u7 |& W" _2 S
;;
判断是否给本turtle的评价质量做出过评价的节点
5 S) @, i) R# O" c4 G' @0 ][set note (note + item j ([credibility]of turtle (i + 1)))
& f" B2 Z, ]$ @# X: R. x;;*(exp (-(people - 2)))/(people - 2))]

% W$ G9 E  x- W! v2 r1 ]# h1 jset k (k + 1)
6 c% Z3 t0 v" {/ I& @) _]- u; N+ X9 e$ c& @
set j (j + 1)
0 j+ M/ p- Y! `* u) B5 y]
' Y$ q+ ], P& H2 Rset note (note *(exp (- (1 / k)))/ k)
- t( x) b& ~% _& V: I! jset credibility-list (replace-item i credibility-list note)2 g1 @9 |0 ^6 l' Q4 U6 x5 \$ K, S
set i (i + 1)1 v5 c$ [' J/ w" A
], y3 Z# B$ T- B% H( l, W" K
end
. B$ ?  Y1 p# F# ~4 O1 E& l/ z8 D1 \: T3 O: G9 C
to update-global-reputation-list
, \  B, B$ n7 y9 m( Nlet j 0
$ p5 G  K; Q' H0 I* S3 O. Kwhile[j < people]5 a5 y7 U) H  w& X
[( ^/ Q4 q1 t7 g" |' f0 z" v" H0 S
let new 0
% E! I% Y. u/ S5 u$ F6 Q! {  t;;
暂存新的一个全局声誉
. L  |" Z( m1 ]0 Z8 \let i 0
' ^# J# a+ W; p4 x; D; Olet sum-money 0
3 {  h& F- r! slet credibility-money 0; }: p# Y& |6 Z
while [i < people]
: m; `+ [* m! K5 E* v[1 T0 m! m/ [; M
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
( z+ g9 G, e6 W5 T& e8 D0 Hset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
# O$ x; V! a$ ?# j! I& l7 Cset i (i + 1)
. t& A! [0 N" D! I]
+ F3 R' t* Z' W1 j1 l. k1 r1 olet k 0
( s* l+ {6 V4 p0 i0 L1 Zlet new1 0
. D9 H, _; _2 I- t8 [9 c; jwhile [k < people]
& n. A1 b8 h& W. |. C" S5 G6 }[
/ V% [) ]+ @; N+ P& Q2 `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)9 K  Q4 n1 Q6 ^: j3 ?: V1 K1 y5 \. u* w
set k (k + 1)
3 [# ~: P8 i& R  `]4 l) x8 F& ]- K9 A. e; e
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 1 ^1 P7 R# n. b* o! F8 K
set global-reputation-list (replace-item j global-reputation-list new)7 p4 N1 T3 z& i/ q" ]. `
set j (j + 1)
: z, f( V: k  T* N$ `]
* r- ?5 I( H3 T- u3 n0 m; ?end: @6 k, ]8 }: ]" D, I  [
0 ~5 g" v* P! P8 T; a8 ?

; P. q2 _7 C! I, l+ e( @. T2 M4 c2 X
to get-color# j" Y6 X6 T9 }" }3 v4 R
% `8 ]( z6 l4 {
set color blue

$ q3 m! P1 j/ Z, @end3 ^- Z& J9 r' x" q: q8 O

; a! w* }7 |1 v" Q: [7 lto poll-class& M1 C  u9 y% S
end
( z/ r- L; k4 n4 u! v8 w
) o9 @* q  G( y0 U/ @1 ]5 w+ G, sto setup-plot1
) Z  B/ U) k! n1 B% k( b
* J: I) t$ |) V8 ~. ~set-current-plot "Trends-of-Local-reputation"
: [) A- F0 f! C& s( B& X% u) N

4 q' J( L2 z. q1 S$ [, b4 `set-plot-x-range 0 xmax

# D- P, M: ]( u( Y- C, q; ]
6 ^. |  E- G3 v  d4 |1 v  Z0 Uset-plot-y-range 0.0 ymax

" M/ X% u% M" G4 T% ?9 ^" x/ rend. s" A) n) C4 T5 Q/ j
& M2 e5 \+ C" \) U
to setup-plot2. i% \8 f& x+ _2 \$ I. N
, B9 Q$ V. M; p' ~1 K
set-current-plot "Trends-of-global-reputation"
& g. g* J, [2 y* M3 c' d
) |: O5 f0 [' Y. y  y
set-plot-x-range 0 xmax
; |$ S, T% e# o, v' X% G1 O

( u1 Q6 l& @6 ^( I$ Xset-plot-y-range 0.0 ymax
/ A$ f3 O# |( O2 X  j( c, C
end7 ]3 A% z1 V+ m
) [/ a' j5 o# I5 L1 a3 H$ M
to setup-plot38 Y! {* O/ O- R, t) P3 ~

$ b& A; E! k/ m* pset-current-plot "Trends-of-credibility"
  J* [) y5 P2 I# Y, p7 v- F3 u9 D9 m
0 t1 R/ x# a2 T5 W9 g; J. w
set-plot-x-range 0 xmax
9 {8 j: m- ]# A: U
" F9 C& r8 X% n% F8 r$ [* s% \, s
set-plot-y-range 0.0 ymax
) {7 C! b; o- ?& M
end2 h' n5 H  u" \3 J. }8 |* V

( Y7 `% E( |; {: X/ \+ @to do-plots4 s" @* Q6 P, M) i8 T, X
set-current-plot "Trends-of-Local-reputation"/ z5 t9 H7 c0 r8 l% o
set-current-plot-pen "Honest service"9 ^' E* Y( b/ C* Z
end
* A2 u$ `1 n3 d9 `# \
' @4 ^. l1 B5 e8 f% E[ 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.
, `/ I* }, K) h: E; P' @' Q# v4 E' x5 }# a
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, 2026-4-11 02:44 , Processed in 0.034145 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