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: 16451|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 d5 V4 U8 p$ L4 R6 _to do-business
" w! [4 T$ t; y rt random 360
6 b: q9 j+ g1 Q, p$ e fd 11 a/ Q  n2 b4 Z1 b5 F% X
ifelse(other turtles-here != nobody)[! s. K0 A8 G2 G( h$ `2 B
   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.: a6 W3 T- l* C
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    / M, Z: ?7 W& }- u
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
# p, A9 j$ P* u9 d   set [trade-record-one-len] of self length [trade-record-one] of self
9 a% ^) _& M: W' z! t( U   set trade-record-current( list (timer) (random money-upper-limit))
. A1 U& z4 ~% X% i
" O: b) O6 O: }3 h) E! o& u1 }问题的提示如下:2 c% }1 E0 w2 q. I+ t$ b4 O  H5 b# I
$ P# T! d5 z: M& \
error while turtle 50 running OF in procedure DO-BUSINESS. E  ]9 g5 f" ^8 g9 G
  called by procedure GO* B' j" [! M( ]
OF expected input to be a turtle agentset or turtle but got NOBODY instead.6 m& p1 c% ~4 r# w1 u$ n$ Y
(halted running of go)/ k0 ~! q* ^& _/ r6 y

, S' h( u0 i. {* J8 G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 `- X( c9 ?& p4 U
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9 }% p8 ?8 e) u& T# C: h
globals[, V! x" R/ [7 E& |3 Z' d# Z% |
xmax6 _2 d/ Q( A' ], S
ymax5 o. i+ ]2 _1 v0 I6 `
global-reputation-list# \( d. F. `- r: \8 W

7 g; i5 y( D; z; r3 z" u$ v;;
每一个turtle的全局声誉都存在此LIST
! |  }+ N+ N/ }, n/ B9 Q% n7 ?credibility-list
; W6 i. G# S$ w, i2 z4 r;;
每一个turtle的评价可信度& a' S- G& f+ J
honest-service
/ e$ C1 K5 P2 `8 a3 D! }- ~2 L; Junhonest-service
) Q8 \. z: q/ M" Y5 S, I  aoscillation" V9 W( ~) H8 O8 c' u% y" i
rand-dynamic
2 W, H' c; p$ K9 J6 []6 Y. P' F- v- E$ c( t+ J5 `
3 c- D& s0 p' }5 [7 U
turtles-own[
/ A  [8 P7 |4 r6 etrade-record-all
, t; H+ f/ p9 i3 k: b8 P;;a list of lists,
trade-record-one组成
* I4 ?4 q  t1 Z6 [trade-record-one  Y. W' s) N/ K  I& _" e" H
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录) J' G% P" l8 `- Z8 \

/ }8 g  D: ]* y- T& j;;[
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]]( H2 t) H. `3 A8 Z% c, f
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]! k  x5 `# i" C  X
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
6 o" R- e% x2 v: p2 \2 X0 l; Sneighbor-total! ~7 p$ e0 ~. ^. y: H3 ?
;;
记录该turtle的邻居节点的数目
) q$ o" G8 x- j1 {trade-time
+ l+ h" }1 a& F5 i. ?* q) \6 _;;
当前发生交易的turtle的交易时间
- U$ ?2 T# j1 C% aappraise-give3 I- ?+ W3 {" R3 D- o
;;
当前发生交易时给出的评价$ V% ]8 s: N1 m. F
appraise-receive
% }9 p/ X" F. a0 v;;
当前发生交易时收到的评价0 P8 E; V' Q0 v9 ?! W, q0 V
appraise-time2 ]( N# o" U* I* b' t, r6 v
;;
当前发生交易时的评价时间& M* c! W9 `( k6 X% w: e1 g5 u1 n
local-reputation-now;;此次交易后相对于对方turtle的局部声誉. b. I, N+ ?. N$ @+ ~
trade-times-total$ S( l( G  a3 ^, \1 `
;;
与当前turtle的交易总次数  B# _- v: {/ [$ X
trade-money-total8 v8 h- J) C+ L  ^
;;
与当前turtle的交易总金额
! `0 j2 T$ y2 c5 z4 O1 glocal-reputation
$ Z% |- o- H' H; l# u# \1 c. e/ {global-reputation
$ b* j+ b5 `" m' f" N% M' h8 Gcredibility& V/ V" G6 `" n! l% Z
;;
评价可信度,每次交易后都需要更新( i* X, S* \% r& d6 `. d6 {
credibility-all
3 f% Z: S( V3 D4 `; };;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
1 ~' p( Y( H6 e4 F; a  @: x" y8 q; y
;;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
* ~/ T( K4 w% J$ Ncredibility-one6 d% O# p: E3 A9 }  m
;;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
+ h& I5 Y  a5 Tglobal-proportion* X3 |) M7 R9 B+ ?0 ^+ E4 z9 E
customer
4 r; g& {  D7 X+ O! qcustomer-no
) \! {$ W& X* ntrust-ok
% [/ ]6 D# R/ rtrade-record-one-len;;trade-record-one的长度
) c+ e. y7 l4 K* c8 G]
# v* ^4 V; O4 [' k9 o! x' U- D1 |  [3 H6 ?( x
;;setup procedure
9 j7 D$ g( Y5 X
7 R8 C- f* t: T7 ]) M3 ~to setup
* N0 t6 Z( o8 q% p( [1 N2 b0 Q  }9 W3 m3 U/ ]+ [
ca
. g3 z( z- p" m4 u5 k% {6 F& n! Y
5 f# N; @$ W7 N, r: W9 X+ ^, i* s
initialize-settings

" N2 ~9 J) v( D
0 f8 d# p3 @; d; ^2 ]crt people [setup-turtles]

8 L0 R* G# a  a# H  w. b8 [
7 T# }3 I% o  H, t/ }; t8 wreset-timer

4 j3 }. ]$ e  @3 R2 l
* a0 I. s: r  t8 X9 s" {poll-class
# ?2 E1 a' r+ k! ]& C1 ?
7 V+ T! B& u. t# p4 `
setup-plots
( g2 Q/ O0 @1 \# `7 Z
6 q( `% y7 U8 w0 s9 X
do-plots

, e. d1 O/ e6 `/ q- Zend
/ i5 [# I1 Q$ K3 l& o/ l
) M1 z4 O6 A' H4 `, w1 dto initialize-settings
( E: N0 L% {7 ]) }  [: e* Z% e' H. X( }* i
set global-reputation-list []

8 l8 b; A' n' O9 q  B. v$ G! u: @0 K; o" G# f8 F
set credibility-list n-values people [0.5]
, E! l& @3 q+ r3 w
1 ?+ L4 F! b+ d1 h& X2 g" b
set honest-service 0
" Z1 i  }6 @  e3 t
5 @7 Q, n) \4 O
set unhonest-service 0
; U" `( N3 k( g! W1 [. t) V

# u% W  T9 o  ^* _4 |set oscillation 0
$ }7 Z$ u7 k& O! ]
0 D( ?- c" G5 a* O. v1 S! |; C
set rand-dynamic 0
- r) \) f& ]8 q% ]8 n- B. @
end
) o  N) D' A3 y# l+ }8 w3 e4 I2 P0 h$ a7 l: l! f
to setup-turtles
  y  A; r* F/ @: [1 \0 Lset shape "person"
* I, f5 h, b4 d8 H7 |3 B# Xsetxy random-xcor random-ycor
! C/ O+ l* |2 k& pset trade-record-one []
, q$ u0 F- p, o3 {

( c  J& l5 F) B6 ?$ d  Uset trade-record-all n-values people [(list (? + 1) 0 0)]
! H% _3 n; M: n" s2 c/ i, I" |

/ ~# C4 b" \9 |( Gset trade-record-current []+ M4 i9 c1 J" K! [# w
set credibility-receive []! e3 [* N6 G: m$ I3 t5 ~
set local-reputation 0.5
; u; |; u* ?# i& K) @' L; kset neighbor-total 0
# |8 ~* U: }4 g: ?# ~set trade-times-total 0
  ^/ I, b$ G4 Cset trade-money-total 0
- E6 Q2 V7 U, L( Z& |- |( Y. Vset customer nobody
' }# b- [: @9 y" m9 D- I8 S1 o; Sset credibility-all n-values people [creat-credibility]
: t3 z. f* P5 ~6 U, a3 F; B& O/ Y3 sset credibility n-values people [-1]
1 `+ J4 o8 X+ X( Q( Qget-color' Q+ f* O2 R, ~5 R1 F1 h9 C
* x& ]8 B3 }6 A1 Q2 W1 O
end! X6 Y4 F! j0 @* Y. I5 o

: @3 G+ `" \/ g! U, G4 gto-report creat-credibility
9 g  {2 F, B8 e- K3 m" Z* C4 I: L- {report n-values people [0.5]( b: N( V+ s4 B9 L( M
end
; I* g: q0 c0 \3 v: F( G
8 f% c+ ^; W: N. J6 Zto setup-plots. g: d! M& a. P4 ]# i
$ ^/ a( o0 r: a7 ~
set xmax 30

) @, t' P+ _& E" J4 ~9 @; ]4 W6 e: Y
- q" l' h! U3 N3 Z9 R, ]set ymax 1.0

6 \' o5 J; u1 k9 o1 J) l5 Q& X) Z' g" L% H$ J+ [
clear-all-plots

. _8 r! s+ c$ @* x& J  e
+ Z2 i$ q  ~6 r8 n3 \& P$ [setup-plot1

& Y$ K& \; R2 Y4 C' R/ H
3 T* I/ n$ X  A( l- [# \setup-plot2
: x* _4 m) s! [9 R

# H3 i6 E- b/ b/ M  m2 jsetup-plot3

0 O* D. l% v( w) T1 X& \end" X2 ~" x! g7 X6 D' V4 c- _' b5 u
' g6 g! R  s- B' \
;;run time procedures9 }0 S% u) _( \9 G: o! ?/ t% u
: S2 ~# V6 t% C( I. o
to go2 u. c0 V. `1 s) Q" U
% u6 b7 a" w5 u0 F( W
ask turtles [do-business]

& o8 F0 |, b6 k/ ~/ Nend' G' O& G0 m* V$ ]

- r  d- E! t( b* B% b/ @to do-business ! O/ h1 `1 g, J' I
. G- S7 E) b2 G  `! V9 h: ]! H; B

' h2 h( y0 W1 J' grt random 360
# D# x* R$ h/ H* ]6 K

( P# F4 U7 {" p6 r( ]! Rfd 1

6 s- t! U/ {1 a( g5 ^1 n8 `! Q; Z; u) J
ifelse(other turtles-here != nobody)[
0 }8 d+ c! W  _- W; Q3 h

" X3 u7 ^4 {# c8 p0 V: ?9 c5 E5 rset customer one-of other turtles-here
" o9 Y# x! [3 S" s1 L9 a9 O

0 Q  ]7 a9 E6 V' o' r6 h;; set [customer] of customer myself
7 O6 p5 e# }3 P) n5 u' ]
2 c% Q0 m5 b) z. Y
set [trade-record-one] of self item (([who] of customer) - 1)& V& B( ~% Z! U& U+ }
[trade-record-all]of self
+ A7 S5 S% z. r7 j( q7 r6 \% v;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
& B- y. ^1 P( g# j4 E
# J- D1 x6 D9 W% w+ E
set [trade-record-one] of customer item (([who] of self) - 1)
/ o! k9 y9 ]% f[trade-record-all]of customer

6 h& G' U. I1 L* l$ O. w1 }6 y- N# p; N+ E1 S
set [trade-record-one-len] of self length [trade-record-one] of self
+ B- B0 ?( E# D& @) Z! D
4 q) V6 M& n: A+ \% Q2 p# ]
set trade-record-current( list (timer) (random money-upper-limit))

0 g: @; \& I" L* `
+ e9 l7 m* w; y$ z( Eask self [do-trust]
' I/ y, L& n. |3 Q* p: P  j8 a;;
先求ij的信任度1 a+ h2 k0 K: s2 D4 r

+ g- v% o0 f) G# w$ A2 uif ([trust-ok] of self)
6 w5 [+ k" }; ~) l1 s0 E;;
根据ij的信任度来决定是否与j进行交易[
+ X1 I, W% X% m* E# H& g0 Wask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
* I1 U* t& E! F8 y
1 W' o! h4 ?$ V4 H/ [7 r3 g. u8 A$ }[

* `, t" ?# c: q; f+ l8 j+ o: g( }3 ~% b& @& u/ W, ]. n
do-trade

! w+ A; a4 g5 k  [# r
7 S3 q) ~! F: X5 Y  Lupdate-credibility-ijl

, H, s& E8 ]1 P2 t+ f. Z& ?
) e6 r( @1 R. ?# Uupdate-credibility-list
% S  O: S! n* _- m/ }) x

% v/ A+ K  ?/ u! I; c1 T2 k' I- b& l0 t% w# p
update-global-reputation-list

6 H$ ^3 N3 i* d$ \2 r( x# ?& B; h9 T0 Q3 Q
poll-class

$ G9 n3 Z: g, }' @4 z; M9 G" B( T0 b% L( d0 S
get-color

4 n+ d2 E& K1 _' E6 g
; t8 R  Y- `' j/ z]]
( A, F5 w5 V* k7 V, p9 B& M5 g" a- k; c$ _) w
;;
如果所得的信任度满足条件,则进行交易5 k% G' f& y: v- F' x; u$ f

3 q# X: U' |/ ^  j" b[
+ x+ C- ]( W% c$ H
" _7 d( Q7 N% m
rt random 360

" I5 K, g: V* |: ~, Y3 c; L1 D* H5 E* Z! i3 Y" R4 B! x
fd 1

0 p2 @  p9 M$ O, M- u
7 r0 V0 t1 e- }: k]
  a* T2 ~) P% f9 i) J& C
3 n" N4 |1 W" r% X" o# e
end
. K9 J+ d5 g; M8 {/ L+ ?! M

  v. f4 H7 z8 I) gto do-trust
8 S( n* R: H: |; @, W. Jset trust-ok False
, i& ]" v: C( M( O8 ]+ Z, {8 m* i) D  ?# D- [+ G

2 K/ H2 H3 ~/ N. Ylet max-trade-times 03 |. ?. f! P+ ^
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
- @0 J( p/ X9 \$ F- |% alet max-trade-money 0
( M; v- @) ]; l3 e+ t) ~  Z! jforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
! \: d, E# |5 O/ e) D! h/ |! Zlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))- r, o0 l3 S0 l( s: L7 ]' n

' j) S% G4 U$ U" ?- J1 \5 a
7 q7 B1 W2 w) `4 |6 a) ]$ C
get-global-proportion
& Y0 c! @  _0 P- ?7 K8 Jlet trust-value) c2 d( ~2 J* b7 Q3 j. n5 E, L
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)
7 |' C3 I$ F. ?, t. z
if(trust-value > trade-trust-value)
) P8 @9 U& H8 |$ o[set trust-ok true]6 f3 Q/ r+ j  p, [: p; r7 T
end
5 u4 f" i1 j$ u$ l4 x; w- U
# m" V8 T, F4 K' E3 v* z; xto get-global-proportion
; l" O+ E2 u* J" I* [* Hifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)7 t" y" p5 ]9 ^% l3 H
[set global-proportion 0]" d  E4 d* w3 W3 g7 {: @7 a
[let i 0
( W! X+ {- b0 z! K+ ?let sum-money 0; j( l4 ~' T+ P; C) m' X
while[ i < people]
6 x6 J% _, a& K5 g; O9 L8 I+ X[
. b  ?. b/ B+ g" L/ x1 Q7 K* j* v0 Bif( length (item i1 b, C; m9 b! W  l
[trade-record-all] of customer) > 3 )

7 N- P, Z% X; H# e2 F) z[9 Y1 @9 e! K) S5 k
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))4 ~  ~6 y3 U) z& U4 Z" Z# a
]6 c) n3 @4 W) S+ y' }( q( _2 I
]
) R% _  A. v% k$ ^: E. ?* ]let j 0
$ L: |; N( ~9 K2 Clet note 01 T4 W, H# j7 _* B2 x, Y7 S
while[ j < people]
7 X+ M0 q: r6 _8 X2 B+ L[" Z5 y4 o% F! |# m
if( length (item i0 \* c7 W9 q' u9 G2 T
[trade-record-all] of customer) > 3 )

; ^8 A' U* s! X3 ~6 K# ~[
: q  Y) y4 `! U: k( O2 u3 j+ Tifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)- Q' n4 E; c" n- x/ }0 L
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]0 M- I9 b. {! P4 T$ i
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
; K5 U  M- t; |8 ?]/ Z* }3 P& `* ^3 S# W; `, ?
]
, U; {1 }( ~. gset global-proportion note  N# e6 e/ R$ o' v6 e0 m
]1 z) H, G9 \9 X4 V3 {1 s! l
end* ?3 \  S" E' F: k
6 d" @" b# D' P" Y' d/ d
to do-trade, P& Z3 A8 K$ V! [3 ?
;;
这个过程实际上是给双方作出评价的过程- U/ x) J1 l; ?3 T0 E: R' N
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
+ ~! `) @( o4 _set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
* {6 p4 W  `* f) R' e; |, Rset trade-record-current lput(timer) trade-record-current& {: H2 G4 A  O7 p# \/ {: S2 a
;;
评价时间# c( j/ D( `2 Z" ^4 @; E
ask myself [& n2 w# {8 s; \2 h3 e& g
update-local-reputation" S2 e5 A1 [9 _3 Q
set trade-record-current lput([local-reputation] of myself) trade-record-current1 z6 C1 S' H7 U- @) X$ K/ k
]7 ~) z1 s& |0 {5 q
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself& L; Q; Z3 P/ i- s9 M" }
;;
将此次交易的记录加入到trade-record-one
; u+ [: y5 m; q& c2 }set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)8 n. ^& @- G# p7 z0 h% |
let note (item 2 trade-record-current )
, `9 v5 R6 n9 R) g9 gset trade-record-current! i/ i! ~) K8 Z; s. H7 v0 i$ \
(replace-item 2 trade-record-current (item 3 trade-record-current))

- M4 S) y% h1 U- ]set trade-record-current
/ x* o  N; \4 V9 A  U(replace-item 3 trade-record-current note)! V# n- s) F/ {, o5 F: {) T

" J9 J! W8 r/ q0 n  T
2 }& S) B3 C( M- |2 F$ m
ask customer [
% a0 l/ [0 R) X  _, L. uupdate-local-reputation
0 j: ^/ t# z: c  fset trade-record-current4 Y9 l6 N) F# G7 e, k( r
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

1 s0 d& E! t0 A" a]0 k" n2 a% s2 k4 K
# B, Z! R( S& I
, h, [, m, q# i& E$ I
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer. k" o/ ^4 r; C  k3 }% Y5 L7 q
4 L% p) P4 P" l; ^
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))  i$ L# y) v3 b% I! h
;;
将此次交易的记录加入到customertrade-record-all1 S! c2 m6 T6 ~9 ^% Q
end
. K1 u' ]7 v# M8 L% }; i- p. x0 y' ~0 z7 ]' j: \
to update-local-reputation
% r  `  M8 S% X" D) u4 pset [trade-record-one-len] of myself length [trade-record-one] of myself
" p: Q4 G' d! }, m" i
+ [3 ~$ s/ x0 P* U. k( F
) }1 i; H2 s) z- m. `  q: L) Q2 o- ~;;if [trade-record-one-len] of myself > 3
% v+ ?) u0 R( Y  P, ~1 N( Z# v
update-neighbor-total
  T7 c0 [! h. M$ ^& n& y1 x;;
更新邻居节点的数目,在此进行% I1 K, j' i+ F9 ?& R# `% M2 d
let i 3
3 I7 @3 F- K+ K6 y2 d7 M1 L9 t' [let sum-time 0
- k6 A, G& s2 K" _  B6 |/ J1 L4 wwhile[i < [trade-record-one-len] of myself]
! Y- o: D& {) \  a# e; N& Z[% |' d7 ?* X0 w  k; J
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
  v" y7 E3 q* Rset i
% U0 F" k/ P7 s6 G( i + 1)

- f9 x) X1 {: ?" {0 S' ?5 R]. T! W2 j. z5 L2 U
let j 31 J9 e6 S  L' U% G: ?* H
let sum-money 0' u+ q& ]' a* W- ~' o* O# G9 }% p
while[j < [trade-record-one-len] of myself]
1 N5 i  L5 ~' B/ N0 [& D9 G/ A6 y[
# `5 z& H8 f6 {7 H: q! o9 uset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)5 [( S, G8 @) j; s6 o
set j; k3 f3 t2 B/ f# K. K
( j + 1)

6 E. _8 z# l3 j* v9 K( ~]
+ R; o6 j4 T8 y' Plet k 3
# q4 y' @9 g( {. u$ S  Elet power 0
" T, H# e7 N$ V2 |let local 0
. A% K4 E2 z2 b, s- Y$ d, nwhile [k <[trade-record-one-len] of myself]
( z' N7 F- G: m. C, b[0 w0 b  \4 s8 M3 A3 V5 U! M
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)
% F; U3 _: n& s; p& U0 ]set k (k + 1)
1 z' [! Y7 Z: m* D, l]( j0 }9 B7 O2 z, ]' R
set [local-reputation] of myself (local)
- f. a# B- }/ t' d4 s6 }end
9 @0 ^% i$ x1 g7 P
2 M. C# p6 V9 E' p2 bto update-neighbor-total& ?; M+ h$ A& Y; W: B( j
% G4 M# r7 r  ?% S' U' l
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]9 o. k, C0 {. Y# B

1 e; ]9 |" }( j$ T- \
0 I* Q; o" Y, g- U3 W% ^8 A
end
& n3 q: z7 m( |
) ~8 q3 q& v0 l. x) T7 a3 B. ~* Y4 `to update-credibility-ijl , o: ~" u" G: o
' U% w: L9 j' X+ m* Y* ~6 X
;;
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。( E  h6 m% C) A
let l 08 i5 y* i2 J6 ]- A9 b
while[ l < people ]0 E9 c5 E* n9 Y8 O# f
;;
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6 w, K1 w2 F% E) r1 B
[
, C9 [" a/ t# j* v$ p. T0 J( Qlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
0 l9 K: r! m7 C& ?. d# X% w% eif (trade-record-one-j-l-len > 3)7 @4 q& t+ b  U+ Z+ r
[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. B- ~5 \' u( G& N
let i 3: e+ n0 _% I  {# I- I- v
let sum-time 0# S* C; y: K- g
while[i < trade-record-one-len]
) _, Z" f! ^: h4 p[
* I) Y( X7 R. lset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
. L! E9 f& o3 I) q4 O) C9 t; Fset i
2 D# X5 X0 Z4 n0 y; z( i + 1)

/ }. H/ r9 ^3 L6 C2 v. a1 N]
0 {6 ^1 T# I3 C0 J) Q$ alet credibility-i-j-l 0
3 v+ A% h8 d2 M# ]2 y1 {;;i
评价(jjl的评价)
* z  c8 J/ U  U% flet j 3/ a% Z% v9 D2 l' {' S
let k 4
1 A8 N9 v5 }. D/ U( B! H4 |& xwhile[j < trade-record-one-len]8 R5 u% ~, E; V3 B
[
( b/ l1 S6 t: j  v# R% vwhile [((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
& |' @3 g0 `- T1 e0 A5 P4 Oset 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)( w6 S2 f. ]& e( v# O3 `* m( S
set j
/ z. U; n; n$ O0 M. o9 p( j + 1)
8 o% J; B- S  u! C; C" L' s1 l5 i4 @
]7 E, b* D3 C& v9 a+ \+ m
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 ))& s, g! z" H  d8 x# \- Y  x) A

$ _' C5 g4 M" T' w' p, c: q+ B7 e
) Q& Z/ l; {# H$ Z6 K
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))  w; G5 S5 Y' E+ b
;;
及时更新il的评价质量的评价( _! Z8 r3 }" J5 O1 y2 l
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
6 k1 V+ ?! j- P( @set l (l + 1)
* q) c# A8 _. w9 f: E3 ~; P]4 Q1 A9 L% L; t  J! @) I3 D8 f
end
3 G; V; E  G; Y; n0 a$ M/ V  ?* U8 M2 k# }0 l
to update-credibility-list
* k5 m, y4 O+ k6 a- flet i 0
: Z7 a/ M' R6 g% G# Awhile[i < people]
4 ]' N& g& h4 e1 p$ {[
& h, L7 s& P& }- @7 rlet j 0
# U! j* V/ T1 i7 b' [3 D; Qlet note 04 u+ L( {( f0 J. [, g) Y+ i
let k 0
; \1 m* i- }) X0 n& C;;
计作出过评价的邻居节点的数目
" C+ w7 O0 d  b- D, H" a/ Z; {while[j < people]
  G* G3 ?( D, j4 Z7 `2 |* P[! @  ^, V$ S7 L$ C8 V
if (item j( [credibility] of turtle (i + 1)) != -1)
$ k8 ?0 l" B  {9 G;;
判断是否给本turtle的评价质量做出过评价的节点2 R' u8 Z: D, {- a
[set note (note + item j ([credibility]of turtle (i + 1)))
) x  z# T. l( _# y;;*(exp (-(people - 2)))/(people - 2))]
* T( L" k: n+ p+ t) q" K
set k (k + 1)
# l$ V8 O0 j% V+ m7 u: u: L]
- `6 g% i' n1 e1 g8 H2 G7 zset j (j + 1)$ `* c* Z8 i' N
]
2 \- l6 s3 s, d& wset note (note *(exp (- (1 / k)))/ k)! M# D0 `& K- A* F
set credibility-list (replace-item i credibility-list note)
, }7 ^/ z# y6 I$ B# l; Y8 l3 oset i (i + 1)
/ @  `# b1 ~8 w) []
3 k5 s4 u( o' t/ Zend
- ]& I% @" I. L  c" y! @" A2 e- W' ?, a5 C; x8 f* b! m
to update-global-reputation-list' R8 T) e5 G$ ^
let j 0* T7 J4 d0 s& d4 \
while[j < people]
# d6 `0 y, p! ?+ N[' g+ V4 @& i" o7 w# \' L
let new 04 i0 e) C" H% D2 r9 }
;;
暂存新的一个全局声誉: {, W; |3 r! |
let i 0
6 {7 j- D" L/ V; x; tlet sum-money 0
' u/ d! s8 r3 z, n2 ulet credibility-money 0
  a0 L& F* F8 _- P9 w$ m) U3 hwhile [i < people]
7 I# x( [' Q, _8 K) e) b[! c8 |& b# Y' V2 l4 e1 y9 }6 {
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))8 K& B; w0 l5 E- l0 c5 g0 l
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
8 m- O  ^4 G6 H2 `set i (i + 1)
! A/ d- w/ B6 a]1 m. q) u6 v  ?9 O4 ^. n. |
let k 0
& |; y0 W% A* y( c5 j; wlet new1 04 y) C- |! t, i; [" ~* @
while [k < people]+ D6 Z6 }& ?& K
[
  b  D# `' |7 k/ kset 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)2 L' K- M* \* S% k- \
set k (k + 1)4 a1 T2 {8 r9 E; p) w
]* a" E' c/ p8 J1 L" Z; S
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ; @7 @: L0 i8 u! U1 x2 a) ]1 @
set global-reputation-list (replace-item j global-reputation-list new)# L/ E6 w. y- p" Y& r2 K+ r1 G7 r
set j (j + 1)
" l( p* d9 a5 O& j$ J7 Q]
2 W% u. \' [0 j& Hend" E) G4 x1 s/ [+ J
, Q/ Z$ C# W0 H, h8 Z

0 a% K0 |! O$ m, b2 R" b. A5 ~% ~
to get-color* P% l' J; o' U1 @( Q0 N3 ^9 Y
5 J, @% B$ h5 h/ C7 v, n
set color blue

) ?2 w# H2 x- R# X  b- m8 ]" Kend+ ~4 N+ G9 U$ \; N) r
1 ^3 Y& y" z, o) \+ |6 X% v5 D
to poll-class
/ m1 e) x( Z+ U1 Iend1 N1 G+ l2 T0 K+ [  A9 M

: h/ v3 l" \5 G/ \: _8 L- s% eto setup-plot10 d$ f: ]* y* C3 m8 Z8 ^

1 M8 A/ Z: i( h% |  \set-current-plot "Trends-of-Local-reputation"

( q) v( y( ?% r9 V, f4 J. F  w  c
8 U+ t; q. P9 ?  @; Oset-plot-x-range 0 xmax

/ r; l, {% t1 g2 _, g+ \) b: X2 f
' X" m6 R5 s" p3 X: G- ~, Dset-plot-y-range 0.0 ymax

, P- G4 ~2 w: P" z5 \end+ ]1 I9 \" s% L0 d  n; ^2 K
; e9 ]. I' ~6 A  j; }
to setup-plot24 i% E6 I- i( {$ |0 Y8 M
+ t7 a9 b, p' `  N) A/ u% G
set-current-plot "Trends-of-global-reputation"

/ [; E) |4 |7 w3 Q4 Q* C5 S: @3 M9 V1 z; [
set-plot-x-range 0 xmax
. b: d: d. e+ m1 U+ E1 U

0 M2 h% k' ]; m8 z5 {  Z# N- Nset-plot-y-range 0.0 ymax
: i* m- l" O8 n# S. U  {
end
3 a  G+ I$ @: Z. k3 B: M2 D" h, T/ U7 M) c, F, m
to setup-plot3) y! G  u/ B7 a

8 ~3 f& S' T2 ?1 z7 Aset-current-plot "Trends-of-credibility"

  L* e; c4 E2 @* M; p! n* ]" W2 P5 b+ H8 J3 C% Z! H7 ~) X' b5 G. }
set-plot-x-range 0 xmax

& F5 _8 ^, h, V0 n5 O, A6 W) _5 u# C- X" {" ^7 A5 R
set-plot-y-range 0.0 ymax
% F9 v9 B; v) y3 W
end* W3 D8 ]6 p5 X8 A9 d0 i

, f5 ^3 [6 h: Nto do-plots8 L3 p1 ]+ Y- H" E' f
set-current-plot "Trends-of-Local-reputation"
: k1 e3 E% _7 n9 c; _( c, h- B6 \8 eset-current-plot-pen "Honest service"' A" S) U, @) s) a  I2 s
end$ u& ^! ], S" a  U- p4 S2 W  h

, q% y4 t+ `9 |' T( l! 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.7 U+ `5 E3 \" t5 G

0 m6 \* }/ `# }7 `0 [7 g- 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, 2026-7-15 21:20 , Processed in 0.016424 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