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: 15512|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:( T5 ^* S0 d  _- m$ ~3 k
to do-business
) h/ D8 o' K$ H: @( Z9 w rt random 360
* E3 J# Y% u7 G fd 1' Y; [, h3 K% Z
ifelse(other turtles-here != nobody)[; J2 w+ p) d- ?% x: G5 d, @7 M
   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.2 {" v, [( i" N& x# M
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    4 n5 }: w) V0 j  T; D
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
( I+ j/ i) w% X7 i, Y   set [trade-record-one-len] of self length [trade-record-one] of self: Y2 ?  ^9 d+ Q5 D% o4 d
   set trade-record-current( list (timer) (random money-upper-limit))
& }$ w  D* P! Q# _* I: @& |& ^& P, ^( h* Z- a! [1 a% D# a- s0 C
问题的提示如下:
; _/ Q+ ^% D# K1 A8 p$ M% |; z! ~" J( g& J3 L- b
error while turtle 50 running OF in procedure DO-BUSINESS
6 Z; O, ^, n/ L; k9 t  called by procedure GO
8 O; w. E# R4 g5 x: ]! rOF expected input to be a turtle agentset or turtle but got NOBODY instead.
+ ^; S1 g% c5 A- D
(halted running of go)% |) q, E+ v4 r" D" w4 L

5 i/ h' o3 ^2 k' {% L2 p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~~
& o, \7 h: r* \: @4 q. D" O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- t" Y7 P% }, A6 z4 i' ?
globals[) H" Q: P3 r. ^" }/ y8 ?! m$ C) H
xmax- I( Y3 [7 n; J
ymax0 a7 t+ F: f  F
global-reputation-list
4 u4 a) K5 ~* f1 Q, m+ N
; _: i7 v/ h! d+ O;;
每一个turtle的全局声誉都存在此LIST
9 y! e& A4 b  k  |3 {4 Q, dcredibility-list. D3 E1 r( ~  w* \, X0 b
;;
每一个turtle的评价可信度: F, y* d6 k, E, ?% |; C
honest-service; X$ Z' p4 E5 C- H) V2 o4 c8 d
unhonest-service3 I" n; @$ ?( _  W9 [
oscillation2 D7 j. d" |1 M7 }9 P- Q6 p) Z. r
rand-dynamic
- J* @7 T+ J$ T5 `) R% ]]# h) D9 p: c8 d. F( N

/ z, k/ k. T( k( ]( W8 v- z" iturtles-own[+ @/ Q9 E2 o" k6 a! k$ V
trade-record-all
) A8 f6 c% L( F: D2 B;;a list of lists,
trade-record-one组成( K' B+ C3 d4 a& g/ n
trade-record-one+ l3 ~' D1 f8 d+ u* \( j
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
& v. c# k3 g" O
& A' T& S1 C9 }. \;;[
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]]
' F' f3 u) r. E+ Q3 ~+ M, ~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]
: C% x) P: e7 C! ^' M0 ocredibility-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
/ v+ ]5 @5 ^. V! k# g) e, sneighbor-total
" M/ S! h: V; L" A, I3 y;;
记录该turtle的邻居节点的数目
( ^$ i& t4 \5 B8 V! i( ztrade-time
* P+ t1 t9 \/ V3 x1 g$ };;
当前发生交易的turtle的交易时间
' a) ]" n3 R, c! }appraise-give8 O& S; D% Q' e: c3 D9 h1 Y
;;
当前发生交易时给出的评价8 I# _% b" A' I  Y, _; r
appraise-receive
8 h: h, ]* @" o7 }+ c7 F4 ]  i;;
当前发生交易时收到的评价
% J, O9 A% C- k; f+ V' t, y, }appraise-time* H3 o- t& ?3 j9 H6 @) s+ i1 g
;;
当前发生交易时的评价时间  B$ s: z: I9 V2 ^
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
1 f  S! S) _7 [9 N3 i8 Htrade-times-total
2 P+ A  l% F: ];;
与当前turtle的交易总次数0 C; n2 ?6 \* v! T
trade-money-total
* M3 U  K9 P' T;;
与当前turtle的交易总金额
  E% y! \( Q/ t1 G1 F/ Xlocal-reputation
+ B' B: Q$ `. a3 w" Lglobal-reputation
% {7 b- O" ?# b5 Dcredibility
) u1 F; o# e& U6 k+ E;;
评价可信度,每次交易后都需要更新6 \& U, W# X% `8 ?  k
credibility-all
+ j( Q5 X5 u8 q;;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
8 f9 X$ }2 {$ M# S0 s0 t' s3 O& z: i8 Z) \
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
  j! u1 p+ l. e, wcredibility-one! @! D. m, q( K6 S  |
;;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
" I* L% d4 g& d) [7 A! ~global-proportion+ G4 N+ I9 f) k& X  r$ A4 P
customer7 v6 U" a, @$ q
customer-no
1 O1 b( G2 @/ v  x- P9 j5 rtrust-ok
! w( ^3 O& d& a1 L0 @1 R% Qtrade-record-one-len;;trade-record-one的长度9 ^* `2 V9 c* J+ a
]8 I, F5 i3 s8 P2 Y1 ^% V9 y
. t3 i) I' d9 d- R
;;setup procedure/ N$ o8 w' b( k
0 d' F5 ?; ?8 Q) B6 r" r1 f
to setup8 w2 b3 V8 B: L7 d
. V2 h/ ~; I9 j; v! [. e
ca

1 b2 \3 M% N& u: ?# E. v1 u" _/ ~4 D5 m: B' _& r5 w
initialize-settings
1 ^8 {8 p4 p5 F& M( I+ ]
, |! A; R6 a2 \+ l, m0 B
crt people [setup-turtles]

, {! D, U0 `% _3 c' G: `1 z' L+ v5 o0 w+ ]. ~5 o
reset-timer
/ ~3 e$ w9 t* w2 l7 }! ~' e

2 W: u! h* p1 A9 l" Spoll-class
/ k; g6 F0 O6 g
& r  ^, B$ ^% F+ F; C) M/ t
setup-plots

8 ?8 g/ n: H1 s( O0 m! _1 m1 q# V, q: g0 B$ c
do-plots

7 Q9 V$ T  U! R8 A$ o0 ?end7 R  a  k# g# @: ?% q
& L$ M4 c- I. d" A: q- R: ~
to initialize-settings8 e9 W) n+ {5 j% c& G! Q$ x6 h
! x4 X6 R: m& u7 T8 D. [3 b& R& [& a3 R/ Q
set global-reputation-list []

! w4 H6 A2 d+ M, }
$ T, m: i- G, J! r: _set credibility-list n-values people [0.5]
  y* }! H1 F3 X: a
/ t: ^% F/ V3 a. D8 `" D  Q* T
set honest-service 0

+ F0 L; |" z, _0 }8 Y
! u7 v1 b# {% I8 Q8 D, _set unhonest-service 0

+ m$ q! [0 Q  q9 Q* n7 G1 z. s* B/ ^# i( G
set oscillation 0
5 u3 }- W3 B; J* o  Y! _+ H5 V

. M7 b  ]; G1 S2 K) o. J  C* Oset rand-dynamic 0

4 D+ o, x9 J; b- m4 F! Iend
& f0 n+ y+ X& c5 t3 z* r7 q, g, o* I. r$ v, F$ O: I; e  x3 l7 l
to setup-turtles * s( V' d( Y" p3 G' x
set shape "person"
0 |% S$ ~+ P( n8 Wsetxy random-xcor random-ycor5 Y' J( u" @, K* r
set trade-record-one []
# k. ]! u' w4 K* s
$ D4 O4 l* M& ], d3 N* H. [
set trade-record-all n-values people [(list (? + 1) 0 0)]
3 r- u9 L0 O$ j
+ n' U2 x5 b" z+ V* `& p
set trade-record-current []8 s+ t, _; L; f7 ?9 n. y
set credibility-receive []  Q7 Z2 _  G& D$ ^$ |+ q5 {
set local-reputation 0.5# ^. T+ a/ r% a6 {) u, x% A$ x
set neighbor-total 0$ c, D3 D1 m0 X7 j) F' N
set trade-times-total 0
1 s/ _; r6 [5 b! Jset trade-money-total 0' r# \8 O) j5 `" H1 g% L/ B2 q# B
set customer nobody; n5 k: e/ O: g
set credibility-all n-values people [creat-credibility]4 n8 U4 }+ d4 m
set credibility n-values people [-1]
% M7 }( I( r# q8 P. Z( }7 Qget-color
2 M7 P3 W& G% L, n

/ G4 h( \% A4 w( `( Zend
) e. H  o1 f- Q0 r$ R4 o1 _" M) d  H' [# Z' w# m
to-report creat-credibility
4 T+ q8 Z- R" t# Zreport n-values people [0.5]6 O- G$ E9 H  e6 \1 B
end' g) K+ G+ x! [0 S  B! s0 S; Z0 d

0 n5 U& v$ P/ B3 Qto setup-plots
' n( @$ y' T1 ?4 @9 H( l* m0 Q& _7 y' [3 k# ~1 l" K& Q0 r7 y0 p) D
set xmax 30

% |, ?; L7 {! u8 y  U9 s" @2 V# i$ a/ N7 X
set ymax 1.0
7 b$ P* E8 ~5 _& q2 i0 o$ n

" c- a$ C  g& X3 B4 i  Q6 xclear-all-plots

; b$ \9 U: @+ u% d( V8 o/ H* h" O. u+ y7 ?# H( t9 y6 _
setup-plot1
. Q" A- R  {1 l) }' }9 b8 h7 F* p9 d5 j

3 D7 ^4 a$ v0 u' X' K. x  H* P2 Psetup-plot2

' x  \" {  `# p/ }! A! [# Y5 J0 j! u; S/ @* O
setup-plot3

/ s; a8 v) @# N, P9 @end
5 r" f, h4 C( i6 I: ~8 c  V
5 i$ p6 `1 `- w$ i9 C;;run time procedures
+ V) L& j3 k  g' ~  ^! {# s0 y9 K
! z4 {: Y5 ?$ a. u/ V+ q. [; Mto go
9 v( w* E" Z$ M% ~- @7 a! d  ?0 P& M# U3 r/ [, z
ask turtles [do-business]
; d5 E$ E. Y4 J' M! h1 ^) b1 k2 j$ F
end
9 \1 V; H8 D/ f3 b! g, z+ v% I8 A/ \- {2 u3 W1 W% ]- r! K
to do-business # W+ g& L" O7 s, [% j

$ H4 E, s" h, f5 ^0 \3 i1 H+ s/ `: k
rt random 360

+ m% y( k& f% Y. T2 P7 C% h' }
, n& s" p1 Z1 D/ Ffd 1

" p, M0 R( \- z' X) R3 j6 i" T$ e3 }3 a
ifelse(other turtles-here != nobody)[
6 `, s+ r7 a" p& j: z/ q" j
, `, v; D% X! |/ S9 b
set customer one-of other turtles-here

0 G8 z2 G7 c+ J9 |
% R: c% Z# c, v1 j' u;; set [customer] of customer myself

1 u3 m' c& y8 ^! m3 A5 R8 P+ F
3 u( i0 q! u& M7 _% uset [trade-record-one] of self item (([who] of customer) - 1)4 z$ B* w/ ~  K% B, n- n
[trade-record-all]of self" r, W' e& A5 C! e
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

. I! k' o  a3 [, u0 E9 \8 p
6 f, r4 a# Z: x+ L4 Q5 _4 \set [trade-record-one] of customer item (([who] of self) - 1): y. D) z; g) R/ n/ {: ]- C
[trade-record-all]of customer

- z* r! a! O0 S2 H% F& n
1 r5 Y0 m6 @5 E2 M% j! Rset [trade-record-one-len] of self length [trade-record-one] of self
# V  b0 @; P4 g4 n
+ w+ L, O, G8 h# p" Y/ C# o/ w5 O/ |  I
set trade-record-current( list (timer) (random money-upper-limit))

$ P4 t6 |* N' c; d7 k( T9 c8 l
) [$ L/ T+ s3 f1 @" Aask self [do-trust]
) Z! J; f: a- O2 R) k# W;;
先求ij的信任度! k- ]& F4 t& d0 {' E: l

) u4 e& \8 e, e% D& q: L. Zif ([trust-ok] of self)# ^9 e) _, `' o8 H2 Z3 P
;;
根据ij的信任度来决定是否与j进行交易[
( r, e8 ^0 x2 k/ s' P, M$ n4 i6 ]7 ]ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
; k/ r# D" h  D6 G+ O: _7 D" p* ?. q- p0 R0 d+ \, Q; Q% {$ m  b. G
[

3 ?2 n* Q2 S9 N8 b5 m# `
1 P' _2 a) {4 `! Q  @do-trade

( @* a3 Y5 g: K# l+ r/ p; L! v8 p6 u7 F/ ^$ R2 G
update-credibility-ijl
: j+ S/ L# Q1 k9 }; d5 k5 K7 c
2 |8 d! K: Y  {  C
update-credibility-list
6 c3 s/ Q3 U/ Q
/ B7 E' S$ ~! p  F, J
7 k2 R% `3 b% J  v0 O2 O% K' _$ ^" N
update-global-reputation-list
/ h8 D- t" p6 }" d* X. z) @

& d6 f8 P2 X3 x) qpoll-class

0 E1 b: u* @  @
! K' \) B# v+ F; v5 zget-color
  D4 r2 ]( R1 S9 q3 _' ^
+ j# T, B- k/ Y; H
]]
, V- o1 c% v! u; G
$ Q- x  Q: y  _/ l+ p0 Z;;
如果所得的信任度满足条件,则进行交易
( q# d, W; O& H! V
0 I' C* T( ~1 H, H  z- k* _[
: B/ `/ w, e, Z- G/ B$ F
; h1 _) |: F3 o" v$ M2 q
rt random 360
9 ^1 Z0 A" H( E* }' \1 u

6 a& c- y( ?7 V; _$ |fd 1

0 d! F5 Q: g1 ~! |! s1 [) p, u* E, f' o$ {' B8 m$ {. n; F
]
/ ]4 Q/ |) ]; |8 Y( M' f

7 t3 z7 \7 y1 Cend

3 J# E+ O( L( X: j6 Q' J3 b
8 H' y+ M1 Q" j% {( _/ L' G7 J# pto do-trust 4 n+ Z3 U& L& {  j* u/ s
set trust-ok False! ^3 |* K2 H) ?; Z

* }5 O3 f. V4 ]% }% M1 h# L

& s+ X0 f% b. `7 B, olet max-trade-times 04 T" V( o& B; \- i! S0 y
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
$ @  j: _( l$ c+ L. o) f5 b( `# R+ plet max-trade-money 02 z6 Z) d5 e& k, R% I
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]$ O- {, q2 v4 ~; Y  y6 a( C% G8 [5 M1 b5 g
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
6 ^. O+ Z1 Q9 \3 ?: Z
8 m" f; ~: t7 y

' H) W! n- @8 B8 N4 z8 M  zget-global-proportion+ O0 K( y& h0 \4 c: F' b
let trust-value: I2 B; I' {- H& R6 D) W
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 e+ ^% _  S, T$ k9 m7 uif(trust-value > trade-trust-value)
& R" T( J# E( U  H3 Q( r[set trust-ok true]$ p8 |& P- u+ A
end
% L# w- X  A& R. \% C
; T  Q8 M1 D: [& w* q  [, Z. h1 pto get-global-proportion/ B" n$ Q* F$ @2 v# A
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)  q" z$ l7 y; K- F4 p
[set global-proportion 0]3 |& A, k+ ~  ]: |
[let i 0- U7 w  c* R7 w' r. s, p& R  |
let sum-money 02 \( e/ {* N. F9 f6 z; w
while[ i < people]- Y8 ^4 M# q3 @& n  Z
[
& N- V& s0 n) s0 U, [% Xif( length (item i
. ~! u. A4 j1 X6 e[trade-record-all] of customer) > 3 )

( D- L$ V4 X0 I9 f# _% `+ I( Q[
+ @0 F" ^' w( a# T! Cset sum-money (sum-money + item 2(item i [trade-record-all] of myself))# P* I; t+ U# ]4 s2 d5 T6 x
]
9 _$ B3 x9 x. G1 _8 J- y]
) i, q. t. G/ S  h: s; k* Alet j 04 u) F$ @2 G% l' t! o
let note 0
, c% Z# n; P4 ewhile[ j < people]
6 ]7 H- ?" k2 @! h" a[
& n" K* w& A+ s' yif( length (item i0 r0 A7 }/ T: w* Y/ B4 V
[trade-record-all] of customer) > 3 )
0 K) ]  A, ?/ n7 I" Z& Y) }; w
[+ \+ \4 D6 X6 ]0 H+ M' s  M
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)! J. C5 M  H* Z: G5 S$ X
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
0 X4 g* X  i: T, f! q; u[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
0 y$ u/ U4 }8 U8 N( h]
+ u) p9 P  `* L' ]]
8 L- m6 p) \( xset global-proportion note" w. S9 {" e* \$ a  Z, A$ O
]9 r5 z! J9 S3 q7 |  J. N
end
  H: \, t9 A6 K4 `  G# u9 I$ J( z1 ]8 @1 K
to do-trade
4 H) E" R4 Y% M  U; k;;
这个过程实际上是给双方作出评价的过程
' f5 o, V) }- m9 H2 k- Nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
4 `! v# _& @) I: X- m) b' o' _set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
) J6 e2 l; @) `2 Z3 _0 _set trade-record-current lput(timer) trade-record-current
2 ~" C& E6 g' Y* `. W  V, s3 [;;
评价时间+ F# Q& X) b9 `* s) _/ L
ask myself [) o* w. ]  c* B) Q: b* w
update-local-reputation
8 L, M  R' U/ ]: f: uset trade-record-current lput([local-reputation] of myself) trade-record-current5 U' L% }( X& L
]
( H, ^3 r# q% p9 V9 c' n$ u1 bset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself2 A5 i) P( }% s8 J! i) x$ A- X
;;
将此次交易的记录加入到trade-record-one0 Z$ g/ x9 B' N9 w
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself), c8 w6 J& ?$ E, `
let note (item 2 trade-record-current )
; J* x5 k. V2 d2 Aset trade-record-current
9 B8 Z& T. z0 W3 |$ S9 }9 @(replace-item 2 trade-record-current (item 3 trade-record-current))

" s0 y+ r( ?3 k' S; lset trade-record-current
- Y7 `7 Y$ g6 f- f6 M(replace-item 3 trade-record-current note)
+ D# P- d  r5 b' F! E! a+ j1 u, [% i0 K! s, L1 h. M9 [

6 M& P1 R- `* }8 A! o4 U1 Gask customer [
( J' s/ ^5 Z. c6 l4 h! c9 x+ N* @update-local-reputation+ [5 p0 H, S% X0 h. f9 ^
set trade-record-current
" T% F# u3 W6 E3 [8 U2 u" Q' D(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
6 O% D& D3 M! \
]9 Y' H8 s. i( K. _. p2 j7 x0 L

% q' ~+ F2 r: `3 e
# f& [8 h' w- U) y, u- c1 P
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer# N+ U: y9 M& x# s$ \! Z. }
3 C/ J) \, c! }! ~% z" a
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
2 ?, T" j# |4 A4 ~;;
将此次交易的记录加入到customertrade-record-all2 ~4 b0 l, {' Q: I2 v5 [4 }' X$ i! Z
end
8 N2 B2 n9 ^1 d8 L: [1 V5 ]2 W  ?. v) h5 ^2 Q. C
to update-local-reputation
6 q+ P$ y" ~2 w! Fset [trade-record-one-len] of myself length [trade-record-one] of myself' B, e( ?) D) ]% d, Z8 m* Z

5 ?& |' }' P/ j- c/ [6 R& S7 f$ N( X, g
;;if [trade-record-one-len] of myself > 3
0 r. Z; D8 B) g4 ^- @
update-neighbor-total
+ I4 N* E) {% g* R7 n) x;;
更新邻居节点的数目,在此进行
/ D( |( w; I( v8 ^% f2 Slet i 3
/ e( S! F% B: r; @3 ~let sum-time 0
" h( ]9 `' H# J, [# j" l7 a- ?8 _4 Gwhile[i < [trade-record-one-len] of myself]
( Y' P' _6 r* @7 p+ \: z[' z- a3 U9 R4 d8 q0 f9 B; Q7 m" \$ B
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
$ Q/ X5 _9 K1 J0 D4 lset i
* g/ }8 Q, F" j9 w# f( i + 1)

2 @' J6 C9 F/ L- {/ j+ l& n( s: f]& X! w3 C# R9 J6 K, B3 T" u
let j 3# o# z+ a' M  A: h
let sum-money 02 a4 H; W! n6 V
while[j < [trade-record-one-len] of myself]4 L( p; p5 s0 q( g) \6 M5 i
[
) V, x3 u( X9 F1 Nset 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 S% i& N8 e. k& ~& O  N
set j
* b; ~3 c3 m4 b( N) L( Q7 e4 F( j + 1)

: P" f* L* j3 r& [8 J]2 v, z* M' ]8 C0 X0 t
let k 3. o$ v4 r+ l' L5 p/ u/ A: b+ X
let power 0
/ c/ }0 i" \6 T, X5 c( g4 Mlet local 0+ ^1 d  @& F3 X
while [k <[trade-record-one-len] of myself]
; |+ k5 c1 u" Z  @# S[
9 j* V! I8 \' r# j: a8 |' E9 K% Pset 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)
8 j2 m" o' G" k  m+ u* eset k (k + 1)
9 e9 E" C3 e, v) J) J, S, ]$ @]; z4 T9 `6 S% i2 A
set [local-reputation] of myself (local)
7 ?' }, Q6 ?+ j5 ^0 t% {end
: |3 S, S- a+ v7 B( S
$ N$ e$ Z/ T4 M% ?; r5 w0 v$ Cto update-neighbor-total5 w1 j. b5 a7 m/ P& W' M8 Z
( \/ E4 }+ l+ g5 S
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
" d: ~5 W% ~9 f4 n1 N5 @& x% T
( g5 l7 ^8 ^6 A
# s) F0 ~2 q9 E$ e* n
end
0 N* |& X8 h5 g( T# k/ {, L7 e1 k, D2 D! z9 j3 T# V: y; e
to update-credibility-ijl ( {; v& n7 K% K) {6 ?3 `

1 Q" i8 k2 @/ c6 o;;
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。! m- q9 A; I8 P: [6 p+ t# n
let l 0
! S7 U( }& c0 g6 j" L  s8 T  rwhile[ l < people ]3 R6 g3 ]+ L, W. |* M
;;
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
& r# L* r: h% |; M2 |4 J$ ^[/ L5 z- V  N$ X7 y# T! l
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
& k& w: {9 j3 i2 q! T4 ^: t% {if (trade-record-one-j-l-len > 3): i3 v8 ~. [2 `0 K; V! |) g
[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
* W4 @# x0 V' B9 i& B. v4 s5 ^let i 3
( a9 I% h1 u( }# N$ ?  l9 G) nlet sum-time 0
& ~7 ^2 e3 o  ]8 e/ }while[i < trade-record-one-len]
, s3 @! l8 U# B/ k, R: L, y[; t: b2 l1 x4 k5 ~! S
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
8 n. z4 J2 R1 k9 @( k# Nset i
9 X! \  F# ?; X, }9 H; V. a6 A( i + 1)
5 m- r; p$ P3 Y( b/ i
]
, i4 R( q! l5 y3 F$ [$ rlet credibility-i-j-l 0
2 t7 `5 {8 ]6 [! ?, F0 J; W;;i
评价(jjl的评价)
' |% B1 a% g" d6 }let j 35 E1 [4 w. r# u+ k+ y; f7 p/ ^
let k 4. v# k, ~# Z9 e* a0 `, k1 p
while[j < trade-record-one-len]- P8 e$ m% S( l( t3 j6 ?
[
6 q: U, L: a( M+ Awhile [((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 [+ @: ]- ?# O0 Qset 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)! f3 e; A2 i& t- J5 l9 c$ M- _: l
set j* h( \. i6 e4 y3 ~. b' `6 F: }
( j + 1)

* R- ^  J' K- c]
- P( b; x* K  K9 k: z6 Yset [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 ))
& N3 A0 a4 h+ Z4 B- z- v5 p+ `( H: Q) e. W, f/ v
, M$ B1 V$ N- |) x4 Q
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
/ a; B* N  k2 `; V# a: V7 F;;
及时更新il的评价质量的评价
5 B2 z# V3 g+ a! S5 v" Z9 |set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
8 T1 D& w* _% m6 I. y) J* zset l (l + 1)& x6 n9 T! x: K% O; z# K
]' _2 T) n% P  U: Z* u
end
9 X2 H* U/ z% Z9 y4 P0 I' n
! @" d" i: ?) I4 y3 Y) \to update-credibility-list: }" F- f6 `& q" R% l
let i 0- h+ |' I0 \) K( z) P" a3 t6 N+ P
while[i < people]+ Q9 y5 M7 h/ W% U' O4 {: m/ ^9 u
[
. F7 n/ G5 D  W) M/ y( Alet j 0
0 Y9 }: R" S  x: Xlet note 0
7 Q- C: Q3 A* flet k 01 M: N  y1 u! ~4 K
;;
计作出过评价的邻居节点的数目3 f% f" h3 \0 F2 [) P- `, U
while[j < people], U. D) e7 H) a( H- l
[  S+ B. ]' t4 j" }0 Y/ k
if (item j( [credibility] of turtle (i + 1)) != -1)
" D+ T; H) a) a! \;;
判断是否给本turtle的评价质量做出过评价的节点
" l9 u2 c, ]$ i+ N* G: }- a[set note (note + item j ([credibility]of turtle (i + 1)))7 q8 Q2 c$ c" Z/ D! s! m
;;*(exp (-(people - 2)))/(people - 2))]

7 u' }# A- E8 j$ J2 P* Cset k (k + 1)
$ ?/ N% ]( l2 H8 M# S$ P1 v3 Y]) ?6 W+ H- x) t! @7 t
set j (j + 1)+ b/ S/ b9 a5 Q
]
: }/ W* f4 `) W. `9 Zset note (note *(exp (- (1 / k)))/ k)
" y- j5 N( X- @4 u- [% vset credibility-list (replace-item i credibility-list note)
7 P: {! c8 F: y/ v: Fset i (i + 1)
$ U9 b8 H8 {& b3 f( x5 d( K]
* P- i3 V' k, V$ aend
& R: ?/ b1 q1 p+ K, L
5 @# D7 g5 j4 d0 _. o2 s# bto update-global-reputation-list
( M8 ^" u9 ^3 v  u- Jlet j 0
$ R; D% R, G6 \0 z$ R( Hwhile[j < people]
( L2 ~# M6 l& r! N0 g[$ W/ N; r( C% z( K7 ^# v% p0 K
let new 0
, v, e/ y: D7 |+ h. i5 \;;
暂存新的一个全局声誉
+ G4 p) v) x1 L; }5 \$ L4 \let i 08 {$ l" ?" X* i* A! U
let sum-money 0
0 C0 n  _6 R' A7 p; k: elet credibility-money 0/ Y8 t  g+ U  a
while [i < people]6 V( Z: ~; f3 E- {3 ?- b
[, N( r9 Z0 R3 `8 e
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
: g. `- Z1 l8 \$ j2 sset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))5 E1 _& I! ?/ e4 @1 V2 @) i
set i (i + 1)" C* K( A, ^+ w8 c/ o
]6 d( ?, _0 o( A0 L( \
let k 0
* j0 W$ e" C0 zlet new1 0; n$ C3 T% n6 f
while [k < people]
# o9 c8 m) t+ k[
' ]* z0 e  G$ X5 r7 d9 E4 Iset 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)
  J4 D( i4 y; t% T8 _set k (k + 1)
) [: }+ I: p' k' p. F) [: D]
/ u8 O! \4 c- d7 R5 Pset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)   V% D! t1 Q0 p  I: y. j
set global-reputation-list (replace-item j global-reputation-list new)
! V, Q  O6 S5 O% f# }3 M6 {set j (j + 1)2 a2 m% x  M, p
]) j3 Z1 {- n/ |% Y1 e
end
( g/ q+ m% ]  y  @, \" h+ J& m( }+ L! c7 a. A# z$ B
7 B9 l) q1 J. |& b( Z9 j, P
7 o) P& p3 a- l% ?& \
to get-color' y) d8 _$ D1 v) E$ g

2 p- e8 f* X; P  G7 }set color blue

% E; V- ^4 x. f2 M& }% N/ Jend
( T3 U& C, w% c  T  z- K0 z8 g5 q. |8 L2 i$ S. B& o+ P; ^8 R5 ]
to poll-class
6 J- v) W5 j1 `: ?end2 Z* S; Z4 Q$ m5 y. p" E

0 }  l3 P; @* }2 [8 tto setup-plot1: Z9 Q2 G/ m. F+ F1 @. z$ V
9 U' V# R( |/ B( v7 D1 D4 j& ~0 [2 L$ k6 Z
set-current-plot "Trends-of-Local-reputation"
& B, |6 h+ R$ o& M5 `

: m5 l- B' Y1 rset-plot-x-range 0 xmax
" {0 d2 i' S- G4 F2 E; j! i

- Q% q/ F# q( h& L; aset-plot-y-range 0.0 ymax
$ t: k$ e( K0 A( x( X
end9 U8 D* K5 m8 ?; P* l# t" T

5 \0 J1 ^' Q2 b8 f" p8 }to setup-plot2
/ P- l$ J+ o+ A2 p; O* H4 J9 \$ \+ }& {5 }' [+ A
set-current-plot "Trends-of-global-reputation"
5 Q# s; c2 n# E& A7 u

1 \7 A- R3 Q3 rset-plot-x-range 0 xmax
) D8 B( g7 n0 V) d
. k3 g1 W4 H8 j
set-plot-y-range 0.0 ymax

, e7 t) _" Q6 x. qend: c+ w4 T* l" A

% G6 N4 u8 ]7 X% uto setup-plot3
1 g; v, @7 W, |. i9 X# F8 e
$ T( b, U4 A4 m2 @7 z8 T+ \set-current-plot "Trends-of-credibility"

. i% Z+ ?8 @, j6 {3 ~2 }2 d; h: _) @# l2 v
set-plot-x-range 0 xmax
% f3 }, @7 B& b8 u8 ~/ f

% r% ?; u) `) C1 W8 g: }set-plot-y-range 0.0 ymax

) [3 J5 @+ w% y  [& ?, {7 @' ]2 ^end( g7 I% V) r0 o
  r; k; _: }$ e( \) t9 j9 g
to do-plots
4 S# k4 _, h" m. o  N0 ]4 Sset-current-plot "Trends-of-Local-reputation"
* D3 n, b$ w+ r8 F8 Gset-current-plot-pen "Honest service"
& Y% X# H; t$ a/ ^  Y7 H  n. M, g9 }end
. ?( w% B  N) O  Z+ ?3 i% \3 V6 R% \, Z0 h& ?7 O! m) _5 p7 Q
[ 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.
, o* s  v" d+ |/ c# R, U+ P, E9 d, p5 f; p; F
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, 2026-6-16 23:24 , Processed in 0.019922 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