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: 12775|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:
# A6 A7 d: [( \/ mto do-business
  K: o6 q) |  c rt random 360
7 c/ ?3 Q$ D6 q fd 1
; P; P4 `' b" B9 s8 n" ` ifelse(other turtles-here != nobody)[/ J; U; D" X4 h7 q( x! q$ o
   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.& m4 I. k2 a9 P) ^8 X3 h+ n) K
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
' h- I2 w: J& c6 {) U! _7 X- c   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
' _) ?$ [& e) Y* B   set [trade-record-one-len] of self length [trade-record-one] of self, A6 R* v6 r# l$ w
   set trade-record-current( list (timer) (random money-upper-limit)). S: T8 V0 b9 U& f: u( f2 ?7 Y  u, Y

9 D2 n' ?; ?' j( V  X问题的提示如下:
* f& Y) a- d) @
/ [' B! K& x- {error while turtle 50 running OF in procedure DO-BUSINESS
) _  j: F1 I" R/ g8 b& s& A  called by procedure GO$ |, [* U4 f# M& z* w
OF expected input to be a turtle agentset or turtle but got NOBODY instead.+ e- |/ a2 c% c+ r! m2 P1 S
(halted running of go)0 r! q2 E9 S- c( L* H

6 d4 Y, s8 t# ^- v+ J* {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~~
  a3 l: O- D1 k. Q! `6 Y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
5 ~" X9 Q1 v3 T. rglobals[
, Y, {: ^  L4 Yxmax2 Q# s6 w. q( F" y9 G$ I- b- F
ymax
1 a! O/ ~2 g5 V$ V$ J, Q; w* [4 hglobal-reputation-list
- h6 s/ ^6 g- Q# }4 Q1 l
5 s5 e; c, N& T" P;;
每一个turtle的全局声誉都存在此LIST
6 e$ O* N) _( m2 A; `credibility-list
3 @  Y3 w9 E8 r7 b1 A# g;;
每一个turtle的评价可信度) b0 A6 `. M- y3 q! Z! j" s- g5 `9 L  p
honest-service
; E. `. }3 y* Q6 G/ tunhonest-service  x6 b2 P! i. X- x
oscillation* ^& h' E3 s& w( V  \/ P8 E
rand-dynamic9 n! [$ [# l" R
]9 H: u( n" m5 h
4 R; _' g( O" K) W' T4 M7 ?
turtles-own[. O; h! i: ^9 u# I$ I0 ]+ J
trade-record-all
" f2 [/ z6 k, e( f4 k  W5 m& s;;a list of lists,
trade-record-one组成1 K7 F- J7 L1 |* Y. a* y
trade-record-one
( G5 q- {9 Y7 ]  B6 l: J9 i. r! I;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
* {6 a* V6 i$ J/ o1 n( c
  ^. u2 r# {; r1 ];;[
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]]
6 `# B/ h0 K4 W+ B* o5 a1 e- B# ?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]
) d. p( u1 l: M& l5 S" Ncredibility-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* g  t1 C1 K& V$ J
neighbor-total  h* [3 Q1 y/ ]( q: v. Q( }
;;
记录该turtle的邻居节点的数目  ~) b0 ]9 J  f, v6 A( L  @
trade-time9 l  D0 h# {- I- M# J1 N
;;
当前发生交易的turtle的交易时间" ~) T0 J7 f8 Z$ L! q
appraise-give& f% s0 \+ |4 q2 B% j" w7 J1 v& G
;;
当前发生交易时给出的评价
( s* y- D) }* ]5 Y0 K2 \; L( jappraise-receive
2 }. l! N5 S% {5 C7 r1 h+ L;;
当前发生交易时收到的评价
( H) n" e) j5 ?& }" C5 O/ ~appraise-time
9 k' n% ]! w$ I: G; N% m2 N% o- x% \;;
当前发生交易时的评价时间
4 U5 `& b( I) o9 d  x( X( Elocal-reputation-now;;此次交易后相对于对方turtle的局部声誉7 y3 \; N! i) {$ E3 x8 e# j% Z
trade-times-total
: a; t% N. M& X; A+ P" Q5 E;;
与当前turtle的交易总次数- A% I  G- N- `' N6 o; a7 `
trade-money-total
1 m/ }3 |# e- `$ g7 d. k5 S;;
与当前turtle的交易总金额6 E$ h3 c# d; V. s
local-reputation
& C! ?" _5 u  D8 Uglobal-reputation
" T7 z3 V8 f, o9 u! w; @  p5 [% d" L" Q  _credibility
$ k/ _$ t! \; T" I; D;;
评价可信度,每次交易后都需要更新
3 u5 k; T0 ?5 q6 bcredibility-all" ~9 y0 L8 ^$ ?* n& m4 l
;;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& H) e1 r6 _5 u
% G) `3 a, `) p
;;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0.57 R0 r3 ?9 m2 x& e3 k9 _0 |
credibility-one1 N. H: c: v8 L0 S3 R! ]
;;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( @9 g  a: q; H# [7 H5 ~) I
global-proportion2 [5 [2 l3 L$ [4 S( I2 ?9 [
customer4 C) }- k8 O  d( `, @) \8 d
customer-no9 Y3 G( Y# ~9 h; N  y; \& O# L
trust-ok
3 S" A: D- s+ Y6 Y/ Ftrade-record-one-len;;trade-record-one的长度
' f* d2 r/ a& c! q0 |]  C9 L$ h7 a8 _% W
7 Z/ s5 M2 n: I9 ^2 k
;;setup procedure3 }; ]' n: w; T' Q9 Y4 C/ v
2 M  t5 y7 j% s. Z
to setup
$ \9 J# C0 J) Q! `  b4 J9 V$ U" F" w6 ]2 c8 c
ca
; o) C1 H( Z7 U" t% ~

+ k, d: Z5 `4 K! H& _. @6 X: x+ V: {initialize-settings
* l) u. x5 O+ F; a% S/ @3 j
2 B" _& D* u& h- n, j; \$ t
crt people [setup-turtles]

( U+ ^! m& v' G
3 Z, y+ p5 p9 Q; W, ?. Creset-timer

8 x+ ]5 I: }/ m+ J
, R2 x5 P9 f& ?, l0 [+ M2 Mpoll-class

5 z; g) U' U9 w1 X. F+ U6 j, ?! ?% Z4 _) I
setup-plots
& k5 u  o4 j, V$ T
2 D2 Z, M7 c- D- H6 B
do-plots
& l& w7 \, x( ]8 P; T$ r
end* Z. ?+ H( l0 A+ C/ l5 A3 f/ f

3 v  _# C# Q9 h, ^to initialize-settings
( N- w! G  Q+ _. |$ q" @5 v$ ~- P5 ?: E/ r" f
set global-reputation-list []
2 J2 ?/ `4 q# d9 g: C3 ?  x1 `

. F8 o8 ^, ~. ~( Z4 i& Rset credibility-list n-values people [0.5]
2 `6 e% @- U' o% q- f7 F% d4 ]

- R4 D0 L7 P, x8 m$ x. M1 yset honest-service 0
9 z7 z! }& P( m& l8 m+ j" I

' V9 A$ K5 j4 S% sset unhonest-service 0

0 x" Y6 }8 n, m2 c( U2 E3 k5 a5 I" o! ~5 z
set oscillation 0
; ?) Q. O6 t/ o: Q: D2 [0 Z

# W- j, T' p& Oset rand-dynamic 0
" Z- u$ S6 ?2 T- G
end6 E+ z0 l& B' I; R  }

( `, p! E7 s7 R. {to setup-turtles , }' [) \1 M! I
set shape "person") d- n! G7 A+ r) F5 b
setxy random-xcor random-ycor
8 K4 i; D  a# xset trade-record-one []  |9 i$ `: |$ I1 E8 P* z7 f

7 }! x% C2 ]" U) `2 I- Hset trade-record-all n-values people [(list (? + 1) 0 0)]
2 v: h& V+ X7 }, @, g; V

1 g" h: q/ Q8 qset trade-record-current []
) ~+ Q7 `' I4 j3 I1 xset credibility-receive []
( s$ g) }% w3 Z% U" f$ Aset local-reputation 0.5
' D0 p) s' ^2 i8 h. Q6 e4 Bset neighbor-total 09 i6 ?: n( F" w& J1 ?) z
set trade-times-total 0
/ ?0 x! a5 u7 ^! {  O1 `% jset trade-money-total 0/ ?+ N% I6 L9 [9 r
set customer nobody
& M2 a' w6 }7 u4 \$ U  b" W2 [set credibility-all n-values people [creat-credibility]2 A. C* w' a* `6 n6 M
set credibility n-values people [-1]
5 r, A% t1 Y& i- k. l7 Gget-color
; Y/ r6 U) L- w+ x/ u2 S

, z8 m: Z, D3 Z4 j( }# `/ ?) xend
" r/ B0 `  h( {6 Y
" F" [/ \. D2 \6 ]# o' tto-report creat-credibility
/ C2 }+ F6 t5 Z9 O+ e) C$ |report n-values people [0.5]
: ]/ u, I) X0 q, N! P0 d3 aend
, Y) C( F! l' x- F8 h$ e  d! ]; W! j
5 @9 j3 `* Q1 I6 ^to setup-plots
: ?: l1 u8 ^/ H8 r6 T; ^
. D  q& {3 a4 w  M6 O+ l( x" @- hset xmax 30

1 b( B( n8 d! Q4 ~( J
+ N1 h0 z- _$ q, gset ymax 1.0
! @! q3 z1 c: ~# A9 d
! N) n8 _# V7 {' V
clear-all-plots
* T4 l) g, }: C

) A. \8 C  K# x7 A, |0 j3 psetup-plot1

* ?. ^1 \+ o: t0 o/ K5 {
- u3 e$ m3 ~% `; B% Gsetup-plot2

5 W  `( V6 @# s# |" Q9 e. j  ?
setup-plot3

$ s8 p. g+ D, q7 Cend# B- @& O2 B$ [0 y" d- [9 R/ `

' o- q* \9 `2 _. W! U;;run time procedures
. e0 C% Q& Y+ e' V: ~* P
2 a* \; z8 @; l6 R* S" A. o# Cto go
. i0 v) O* J; d9 Z, U5 H" \4 R% o1 Z: O: u
ask turtles [do-business]

. M8 d( T( S+ b% W$ Bend' O. X1 G7 D! W0 b1 w. I* v' m
& r. S8 p* z: }$ a7 z2 M9 S; U
to do-business ' t8 V+ X% m( z* A& k6 ?# p8 _
2 n; [! W0 m) H0 D  A7 H5 F* O# y

) p( C* u  ~. M- |rt random 360
6 O/ n& L9 @& B: A8 b  g* T
2 z/ }# T% s8 H2 T
fd 1

" q5 \  C' U9 ]6 R- i' B+ T  B( Q
$ H; \. W! t0 L4 L! Fifelse(other turtles-here != nobody)[

  Q( E' R  K% ^0 y( _: w) r+ e8 ~
$ o' Z6 U/ g! r2 f- i! {  K4 Rset customer one-of other turtles-here
/ J$ l4 F9 O4 ?0 C/ ]+ `* @

! N/ m0 k+ l5 ~+ G$ d! n0 w;; set [customer] of customer myself

4 ^. [& t5 m& r$ L' I0 m* P) q: d$ W8 U) J. Z4 A. M6 ?
set [trade-record-one] of self item (([who] of customer) - 1)! K9 @  }4 x& h6 @
[trade-record-all]of self
0 X- H* s+ R; |5 K;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

0 _) r  B9 m* ~- y
3 [4 g0 r% a! r: t& qset [trade-record-one] of customer item (([who] of self) - 1)
' y% s2 D4 V* t4 w9 F9 E[trade-record-all]of customer
: ?9 ?3 ~0 k) n& {

! V0 Y/ k0 a. x7 F: U- l2 H- Jset [trade-record-one-len] of self length [trade-record-one] of self

6 `/ J1 c2 ~8 y- I6 a- j2 r8 @
3 |; `% p% s( l# Kset trade-record-current( list (timer) (random money-upper-limit))
% x8 H# X+ ^/ M7 u8 C1 n2 E3 D

' v2 B2 [( h; u5 m/ hask self [do-trust]$ x# ~: j/ c+ ?
;;
先求ij的信任度
/ t$ H  t1 E# m3 l0 ]! a! w' R& m, ~7 w3 x
if ([trust-ok] of self)& w7 Y+ p+ c- j2 F
;;
根据ij的信任度来决定是否与j进行交易[5 W6 d% V# O6 S2 w
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself$ ~  B# O" i/ ^$ |

, F: S* W. S/ m# z8 v[
6 J9 v+ K: ?3 f! G" m

2 ^3 g7 P# L; j8 M3 i. V7 j3 @do-trade
2 f5 ]; t. Q( @5 G2 Y

: U# n7 N9 _1 _& o" Uupdate-credibility-ijl
0 C$ j0 k3 f5 r6 D1 e# z6 N
6 c4 j# {: T8 z% P; u
update-credibility-list* \1 Y1 j4 J( A6 |
5 e  d; \7 o6 s" l- i: `6 R

# L1 c+ Q0 W& W' k! eupdate-global-reputation-list

" x% _' y9 V* B: T2 w
! O, c& v8 X' fpoll-class
' n5 S" T8 q* J7 `7 E
: ^# p/ ]- c) K9 a- l& K. d
get-color
! N6 F( g" t' m2 A/ \

) K* R& K- a0 r+ O. L]]
. K9 f/ W) v' t( S0 O3 G/ A9 C8 T+ k5 R' n) y! {9 E
;;
如果所得的信任度满足条件,则进行交易
- c" C* Z( j. F" ~. R% a, H. s% `: Y( k. d2 R: {$ [% e
[
" k4 e$ g5 X* h8 c$ d
" e, n7 O9 c% W1 T+ x$ R
rt random 360

# E) Q" h7 ^; ^7 `7 G! W
% K$ i* b& v/ L* A/ g. f+ {fd 1

5 E0 C8 F" \$ W& t
3 d) `* Y/ {9 A; W]
# J" q( i9 R7 v6 w  U. h
* F# ?- A0 C6 D2 Q$ t
end
8 A- P- b& D9 a, H6 L& C9 T8 N
" u- L+ K; u& Q, U
to do-trust ) n" d0 _9 ^! s
set trust-ok False
5 t* O& q, R, a
5 g2 T2 D1 J, O& F  N

7 }! C) }; O& D4 ^) c  Glet max-trade-times 0
2 ?4 l. y# q9 j+ b# eforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]3 j- u( R# E8 }% R! j/ A: \5 h
let max-trade-money 0
1 w5 ], A6 I" u3 L/ U5 N  wforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
/ a& z  X( b8 Z5 @let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
" t! t5 ~2 D9 V) @/ y. {
, {8 T; A7 u4 Y' l4 u1 ?
' h+ n' B7 o5 }* R# |. Y
get-global-proportion8 R3 o- {& z0 Y$ ]7 j8 g; x7 [
let trust-value
0 k' {! }+ U- s: Z2 N* Y  s' Ilocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
) Z0 b8 ^3 Q  e: `& `# d
if(trust-value > trade-trust-value)
# M* B- u6 v) i9 ^9 c8 f1 ^% @[set trust-ok true]- l0 I1 G! Y. d% ^* y
end
' ?$ C8 k: V! x" C
0 O' l9 h) x9 m. E% n7 Xto get-global-proportion
1 s' _! S; J! ]3 y# ~ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)9 ~  ^4 C: h3 j" i2 z
[set global-proportion 0]4 C, K! q" n" g3 ?+ k" l9 j
[let i 01 f6 a- P6 B0 F4 S% o. w
let sum-money 0
( G1 a! V# z$ N0 T* F% W9 G* w! d* mwhile[ i < people]
3 a- q: T1 ]3 j  A[* V4 X! Z/ C& R- M
if( length (item i
* B, l/ ~" Q/ i8 y  O, v+ F[trade-record-all] of customer) > 3 )
: {$ y& f' K, g
[
( X0 ?9 B( S9 A+ E/ L) l  Kset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
9 o2 y9 f8 w4 z; u( |9 m]3 G: _, ~0 |+ \, j
]
1 A  t" m& g0 u& mlet j 0
6 h3 K" S. H* blet note 0
6 C, g# R  {) i  v, B  K' c/ \while[ j < people]
) f: l, B$ r% C2 \0 C[+ I7 e& y! W& Z) O2 H  [! W
if( length (item i* Y- \+ S9 X" W8 L. W9 R1 y8 |
[trade-record-all] of customer) > 3 )

7 r* j) G2 _: @& h& i[0 T: q6 O8 |4 W3 H" U
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)1 r. _3 n) n4 k: n
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
& v) y  I: e* m/ j: L! ?  X  X[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]4 c* t& J3 F; H& `) G6 L
]
; J( i: z. r8 c4 `# ^- I% g& F/ H]) G  T; f1 y. Z* d) @
set global-proportion note
( U6 p5 M7 t) ^% T( X/ Y]/ u! V, H, m! e& R; v
end
0 B3 A: ^9 q" K0 N
5 ]- B$ u2 ^8 [' b) |+ b" `3 R" Xto do-trade
- p# N! _& `: M) U" a' ^+ d;;
这个过程实际上是给双方作出评价的过程
, |# f7 A+ K# K, oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价6 X! a6 D/ y  F" k
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
1 N% X5 T7 F; I& U% X5 m2 f' Dset trade-record-current lput(timer) trade-record-current7 r/ m' e7 I* P- Z; I8 L% N3 m
;;
评价时间, _: \" b' ^% D
ask myself [
4 A, L) U( }: A! `3 g% j6 }update-local-reputation1 g0 q) M0 P- s  h- l
set trade-record-current lput([local-reputation] of myself) trade-record-current
8 Y3 H9 }6 y9 O% C]; u$ t8 v$ s( F0 `+ Y+ {* q8 n
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself7 i  a9 X2 g+ G7 ^5 v
;;
将此次交易的记录加入到trade-record-one: J6 r5 L! x3 {9 }9 I! M
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)8 s1 p3 r, J2 R: {& N3 B! V
let note (item 2 trade-record-current )
) l$ Z$ X# p( V1 Sset trade-record-current
: P6 L7 W( U% h1 A& b( m  `; K(replace-item 2 trade-record-current (item 3 trade-record-current))

2 S) p/ G2 R; [9 rset trade-record-current2 T1 m7 Q7 y9 `- m( P8 A
(replace-item 3 trade-record-current note)4 ?! O  H' D. U1 }

. I' J' f$ H! n9 P$ a0 k# Z
( D% b* Q# q8 b7 j9 v6 a
ask customer [
8 C/ D& i3 p8 o" }* U4 r& ^1 fupdate-local-reputation
6 n1 Z4 z7 i6 j! U, ]" Uset trade-record-current( S( P1 j5 O0 Z' @1 W+ x- _
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

! ?- s8 n& y5 A, i* W& C- v% \* }]; ~7 F/ g( I9 t7 Z9 q( }% U& _

' ]( t2 M% w2 ?' f9 Y/ _3 l
6 F/ P/ Y2 Q1 b- }8 u4 _$ Z9 R
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer/ k% f& m* u0 L8 N9 r$ G- A

  a) |/ s( p% Oset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))1 }+ @) ?( `9 F2 X( T- n, k5 O
;;
将此次交易的记录加入到customertrade-record-all
  B7 i# P9 E; K7 }$ f  T! h1 x3 Tend
! n# @% x8 O7 e4 v  @3 {5 X& a: c$ {; ?5 X: b+ |+ i
to update-local-reputation
6 ]* N+ a1 ]+ z; m% I; Sset [trade-record-one-len] of myself length [trade-record-one] of myself
& z8 q+ F" v- t+ \3 [! B6 O
2 P3 A+ t2 c; V, E6 ~1 D8 Y4 a* u0 ]/ I) K9 [  k
;;if [trade-record-one-len] of myself > 3
! A2 l6 E5 M. A4 r5 R& x7 W
update-neighbor-total0 x; g/ c5 }- l( K, ]+ {& H, V
;;
更新邻居节点的数目,在此进行
: {% ~0 e& ]! W; b; Y6 J2 J, A2 elet i 3
2 R5 p! c5 ^' M8 d! O$ G- G* Ulet sum-time 0
4 X# ~- A1 ~6 _) ^' ~. ]while[i < [trade-record-one-len] of myself]8 H( V' i7 h4 s) j  u( b3 H- {
[' Q8 A: H; a# R# T  C7 K  P& {/ u
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
/ ]0 S8 t  \* Z% n% p5 P& tset i9 N2 @9 a+ g/ B( T1 `. _
( i + 1)
% e) D1 ^# e$ Y$ n2 J" x
]
2 W$ D9 m" A) T# F" j% dlet j 3+ F# x' ]. y6 _& U* P- I/ v
let sum-money 0. Q; O2 P( v* ]" M0 W
while[j < [trade-record-one-len] of myself]5 T: N1 }/ B( V% ^6 t
[/ e2 C8 P. ?* h: k; B7 @
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)2 l0 Z, N0 H3 r# Q3 l  G
set j
" N3 y( {( p3 r0 O6 H, h( j + 1)

5 Z5 ]3 Y2 u& F# l4 q/ ^]
3 d& n" R- W8 N5 Q5 H6 X" llet k 37 ?, [' y& |4 j% x& \
let power 0
, q$ x# v% A( C/ s9 }let local 0& D0 R6 U! t' Y3 B( n  f; O/ `5 _
while [k <[trade-record-one-len] of myself]/ ]  X" [! q' l" S( C" r
[* P5 }7 Q6 X  f* b5 }, R4 C/ n( k+ N
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
+ @6 k7 t3 C! C0 oset k (k + 1)6 T: J- P# X. F
]
! z4 a' L4 T; J% ~& Z7 O9 Nset [local-reputation] of myself (local)
& g- `0 K6 |6 c8 J5 Xend
4 V% K5 X8 \4 J) @1 [5 l$ D) \: H% i7 K
to update-neighbor-total7 g' Q* r7 l. h* I6 B5 I
7 l% \* `3 ?( G. S6 G+ q
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
, k8 N* P# K+ Y1 M8 u, y7 A4 {* O2 y! R: d! D4 R( j

' ~8 [7 f  o1 j2 Nend
6 [, h1 K: R6 o5 Z. l2 q  ^
5 H: q* n5 ~! J/ x2 y3 ~3 Q' Y# Kto update-credibility-ijl
. I# ?1 E& c! g5 n: f. \
1 d8 x  K! P4 |' B;;
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。
. b1 q0 x  u/ i% e; i" Blet l 0
( N: ^6 G( E3 f2 q, awhile[ l < people ]
# Y3 _4 c+ r7 B;;
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  H' j% O, W4 k
[
/ z$ p- h( u' m. G7 l$ S# hlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
  I5 N% K7 A, I  o: o+ `if (trade-record-one-j-l-len > 3)' \/ P+ g; f) D5 @. m! A
[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-one7 w' D& ^- T4 @4 B$ w# p
let i 3
4 O0 i; d* l- V( U; `let sum-time 08 z$ Y1 w/ |5 c' ~3 d1 b
while[i < trade-record-one-len]
" W, g, Z2 L& E  o  o0 p* I- z[
$ k) Q7 A  F! [. {% |6 _set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
+ _1 n" z( I6 O# G. w8 Zset i
/ P4 j' N, W: L7 }( i + 1)
: G& j0 x2 k  u
]3 D% N7 ]) A& o$ l1 c: C# ^# b1 ]
let credibility-i-j-l 0
, I) }- o9 Q6 j4 y0 a8 x# a- g;;i
评价(jjl的评价)* ]+ }. E, H. j" C9 p# e
let j 38 I8 c' A$ ?* Q
let k 4
# {( @$ m6 l( u5 Swhile[j < trade-record-one-len]( ^' z/ `  n2 m8 p5 V
[
$ b/ @# v- {' f: D/ S) Mwhile [((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0 I* T1 C( m+ I, O2 m
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)
0 F/ D( P! f1 w+ e* gset j0 u; z# w2 U' f2 N
( j + 1)

3 _- y( @  B& c; ^]% ]2 U( U0 O) ^! j
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 ))
9 s6 r, d8 L; z" ?& s) B- F! B6 f9 P3 o0 o

' L1 u: E6 O% o+ h" H) `1 o. d9 \let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
$ ^1 U0 C& O% S; p9 D+ _5 G;;
及时更新il的评价质量的评价$ O! d. |- L  J
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]* u9 Q2 Y# Y  z8 d6 t* f
set l (l + 1). q1 F9 h% ^( }$ l, ^2 d
]: M8 L# ]2 C6 r
end
' v7 _# V0 D5 L* [# E
$ U9 ?2 D- h( T* k8 \- W: I( L+ hto update-credibility-list0 \1 O/ |0 b6 L: x" d- d
let i 0. K& v( y. r9 {& d2 |* v
while[i < people]1 a& t0 r% a0 [1 P1 p
[
+ n. k7 _6 c; B; Ilet j 0
' T+ B; R7 R) j* ]7 y) Tlet note 0
# y) D( Q5 l: u7 t, Q' w% slet k 0
7 |4 _. S4 p3 e3 d' Y& J6 E;;
计作出过评价的邻居节点的数目0 n5 u; @  A5 V) E3 W% e
while[j < people]/ h, i; c8 s+ T7 u1 C
[
; s' N+ ]! `9 M' d6 qif (item j( [credibility] of turtle (i + 1)) != -1), }0 L+ m$ B- {+ F: _
;;
判断是否给本turtle的评价质量做出过评价的节点
& W' D4 ?0 |" i, Q/ _[set note (note + item j ([credibility]of turtle (i + 1)))
% n3 L/ A% Z1 G;;*(exp (-(people - 2)))/(people - 2))]
7 H0 r6 I2 X! ^. }% y) X
set k (k + 1)
1 S8 W) n+ i# m]* L2 v" _! ]( O" H/ }! j# ?
set j (j + 1)
/ a: ~6 _* g6 S7 ?3 e" j9 r  m]- \/ _3 x% w/ G5 [* s
set note (note *(exp (- (1 / k)))/ k)
/ a7 w4 x# i  q$ |; q1 _' S& Dset credibility-list (replace-item i credibility-list note)6 F8 S  |. C8 y0 I
set i (i + 1)& ^8 E. ~, j# _8 x5 f
]+ B* H, D; e; K$ e9 D; b- U
end# b3 z/ u7 [0 F$ u

: h- z- j& O7 z" M; uto update-global-reputation-list
: w, j2 n: ~0 B/ [  M8 s" D1 xlet j 02 d3 U: t& c9 d  X2 z6 i9 j
while[j < people]
  P8 {- n+ v  }1 @! N[
" ^8 ^# x+ A' {5 rlet new 0
7 q( {% @7 \' z1 R;;
暂存新的一个全局声誉' b. G0 X' n- o3 p; f3 i/ m
let i 06 Y$ f3 z6 O# i9 ]( N- }1 W
let sum-money 06 e; `. V  X' r' b  ]7 i
let credibility-money 0
8 ?0 g9 ?2 f8 d% Z0 _while [i < people]
0 |1 _5 f* y! o2 ?( q, r- L( h! n[
2 o. C4 Z, S/ j$ r2 Uset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
, _1 e+ a9 R9 e: Q' J# Q6 @, Cset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))4 a$ q4 Q$ r' N% Q6 P1 g
set i (i + 1). O/ O9 F1 }& x) q' c5 D
]
7 }# j( c* [1 T, h( A4 vlet k 0) m- x% A+ {* Y$ M
let new1 0
8 O! i! O& @9 s; x9 Hwhile [k < people]
" z* G  F& Z) S1 j[
: l( F! _/ L5 l# `7 Bset 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)
* m1 p; ~8 p& ^: ~; Yset k (k + 1)& A- c# n: K$ ]
]
4 t4 W4 t4 F! X" g8 dset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) & @! ^2 p( V! p: S0 r9 Z) d, F. X
set global-reputation-list (replace-item j global-reputation-list new)
& j1 R! w; `5 F; |* @9 E6 \set j (j + 1)' P( u/ Y4 ?: I9 |9 \7 P! L; D9 u
]
1 G  m$ i/ S: K! ~; R9 q( send
" H2 U; P* s' \+ D6 V9 x* H! H/ o( t% Q2 c# p& X: e* s1 ^0 w  E

; Q6 }; a2 p1 m% k
# ], c. B% \' J/ P7 ]to get-color5 |! o: r$ q# D$ K' A

. `( H, s' q% H  M# `( uset color blue

) g8 e4 b( h& B# d. }end( N* v* Q% e7 n6 g

8 D6 F+ ~1 A: Z0 A4 xto poll-class! R; p& O! ~1 j/ @2 {# V# }. j' x
end
: i/ P# a5 Z( Q% r' R  r
/ k3 T5 X* s" Lto setup-plot1
8 _5 o2 t  g/ b# Z/ A6 }
# m, h! W, k- {set-current-plot "Trends-of-Local-reputation"

0 I6 G2 g+ J+ v/ N1 O% }3 X2 Q0 l4 P
set-plot-x-range 0 xmax

0 \/ W0 i/ P4 s4 y- i6 k! E  A+ p: E* B% z- e7 W
set-plot-y-range 0.0 ymax
8 T1 s0 A1 N+ Y/ c# {! G
end2 C1 _+ [# e: I. G/ A& q/ `
, H+ o3 Q! F; H( s& B: \- A6 p
to setup-plot2
( V; T: w2 d  l7 H& B' n5 D
/ X( A! t4 Y4 r+ Iset-current-plot "Trends-of-global-reputation"

1 U0 x: W; h& m* ^: y/ ~& G, N6 {! N& X1 q# W/ A8 a7 s0 {
set-plot-x-range 0 xmax

0 y3 A1 ^' e* @6 H- V% o/ v" l! r' u) e1 ]4 h7 ^
set-plot-y-range 0.0 ymax
: L5 h: {, _' _+ {3 h" L2 Y
end. ]& U4 P  s! N0 M* k

9 T. |, _5 d/ z+ sto setup-plot3
& F8 {9 B' ?0 |9 }7 V$ y- @  ], h: M( G3 t3 J8 @
set-current-plot "Trends-of-credibility"

; c, N4 [9 \# Q/ X# [9 d2 R% a. F/ _0 `' d0 F0 O
set-plot-x-range 0 xmax
( z/ N; |8 B& L2 E. @5 q8 a. v
! m$ P3 `3 u4 {
set-plot-y-range 0.0 ymax

% K0 k1 X2 `- O/ v/ oend) \- r* `4 u4 Y

! {/ t0 {$ o* G/ Xto do-plots4 c. |2 _0 |% B9 O: D8 i
set-current-plot "Trends-of-Local-reputation"# n+ x5 M/ h, c  ^- J/ v! {6 p3 ^
set-current-plot-pen "Honest service"; h6 G5 l2 ^! W
end
0 _/ b0 z. ~! ~9 c1 k. B
: W" `3 u4 g2 r3 U# g3 Q0 U6 K1 n& 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.6 y% t! k' |3 m

- E3 U' N, r" w( f4 l; ]2 \2 H# {7 K  s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, 2026-3-10 02:29 , Processed in 0.027972 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