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: 11652|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 R4 o& R0 |6 ~( Q+ R& i
to do-business ) |3 ?. U* T! h
rt random 360
1 ?3 t$ H* m+ r& A8 u1 A1 v1 x fd 1
4 U, q# O* v2 P( k ifelse(other turtles-here != nobody)[
+ _* B8 R  }& W  `% n. d   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.
3 K- P9 S# R- d4 d, h   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    % t  p5 N3 m% [
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer7 A- q5 l0 b/ _, \$ N$ {' V
   set [trade-record-one-len] of self length [trade-record-one] of self
% S/ z7 F& o+ g# T+ R( T0 @" ?   set trade-record-current( list (timer) (random money-upper-limit))
5 j* {2 |7 A5 {. f  l# r% a. O  T' p
: z2 q- Z; `  V) @9 ^1 m$ B问题的提示如下:
- m3 P$ w! v  V7 C4 A: G: |/ c- \8 v7 |
error while turtle 50 running OF in procedure DO-BUSINESS
/ w5 D1 O* R% ]0 P  called by procedure GO
; l' f8 ?9 P4 J; P, Q( K- QOF expected input to be a turtle agentset or turtle but got NOBODY instead.
9 ?+ k+ ?1 Z0 @  U3 x, f
(halted running of go)( @2 K8 W; u9 z) ]$ B+ `

# m6 x( J4 X* c" i6 G7 z- A! u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~~8 B7 x; p* M) M; r8 {
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 R( A2 u3 l. H+ M- s! D% x, Fglobals[
( [, C/ v1 h1 y, P+ x5 P  |xmax
! q& O5 P7 e  v/ H+ _+ Q5 b. ^" hymax. m8 \6 ?2 u4 E9 Q5 F; U5 d
global-reputation-list
" s5 B, g8 K5 E
6 w, o6 }  K6 _;;
每一个turtle的全局声誉都存在此LIST- L8 Z0 B( ~4 B" `  z+ T  H
credibility-list8 b3 A; S3 N$ w  c- o& T2 F
;;
每一个turtle的评价可信度' c+ f1 n7 \. `6 I' r9 `# A
honest-service
3 R% L3 s; Y1 a0 R4 P1 q! Wunhonest-service: w3 Z4 `: O. v8 f1 \
oscillation
( ~9 g3 |1 h6 q$ I; r9 h2 urand-dynamic
) i& _! Q: {+ k! r3 s) J" V( u; ?]
: U4 h+ ?6 |4 ?8 V7 g6 D
/ ^& ?2 e5 X. c' ]  Xturtles-own[
8 ^* l. }: A. t. i% Ltrade-record-all
- y1 M5 h" ]$ m0 E- i;;a list of lists,
trade-record-one组成- s6 [/ ?$ I4 o  @
trade-record-one
5 v$ ^/ |) G( W, `. 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  d1 N0 @  o" P9 ]+ M0 Y
2 Z) _/ c7 o- g, c4 b
;;[
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]]+ i, Y: l' Y1 [
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]
" B- @/ P: ~- y/ c1 P% u  l& Zcredibility-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
, J3 M( Z2 v# k& @0 {neighbor-total
2 L+ V6 E9 n  z  p# Z( t" |;;
记录该turtle的邻居节点的数目; q* N3 E' m' [0 J2 C$ e
trade-time: T1 z+ _+ G" @" M6 Y- B  U
;;
当前发生交易的turtle的交易时间
6 G! N$ |! {3 W5 q( Uappraise-give
. Z4 \6 s, M; [5 a- p& O;;
当前发生交易时给出的评价
7 h8 R' ^  s/ C) C! m/ o& Oappraise-receive8 j9 |) \# R; e0 k
;;
当前发生交易时收到的评价# a3 V6 S% n0 _. H' t8 K  V
appraise-time
7 B& x1 r  T+ `, `5 X;;
当前发生交易时的评价时间2 w% f% m, _# r' e+ M
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
4 _/ I& X. B4 t1 L( rtrade-times-total3 o9 B) a" p4 |: W
;;
与当前turtle的交易总次数& q: N& i7 w  g0 u, S7 a
trade-money-total6 b$ z! {, h% Z. I1 O
;;
与当前turtle的交易总金额! u9 z. \6 Q# C# W7 P
local-reputation
0 O) R6 p  o8 Nglobal-reputation
( w) v+ t5 J. K* k( fcredibility
+ D6 ~2 l6 u* r( _6 A- q% q;;
评价可信度,每次交易后都需要更新8 @0 P# B# Z3 N3 n+ }, N* X
credibility-all
. I. p- ^0 E6 }7 U3 H2 N: u;;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
( V. n& J" V! D! e) i
0 S/ D# F7 t  e0 D$ v0 o;;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" b. M: m  _7 Z
credibility-one
5 e3 {: ~0 T' A; B% Y. O; b" ];;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
5 G- |; W  G# D9 V6 Tglobal-proportion
' J0 b8 M* M2 Ucustomer
3 t8 v0 U; l" bcustomer-no- Z1 J+ A/ V3 B$ D
trust-ok* \& e; F) r; A2 O* ~: K) s: w* V
trade-record-one-len;;trade-record-one的长度
" E) f# \. u8 b5 n# S% T$ ?- X4 s]
; f+ G) S1 E- M1 w% S1 k2 D4 b7 R+ t- i
;;setup procedure) J# R/ m2 g! [, `" A
- U  I) B' A% c" l- x
to setup. ~9 S  Q; u. y7 X" m: g; _* s
; v+ e1 @; \1 [& s- u
ca

; |  R  b4 g7 f2 T7 @
( ~: N4 S2 d/ q% s6 i& R5 yinitialize-settings

/ z, x( I& S$ v+ U- ^2 z
7 ~; j' v  H& x; t1 y# c' Jcrt people [setup-turtles]

7 g& ]+ U' A5 l0 r  `% p
) Y: {2 |$ E6 r2 @7 ireset-timer
7 c1 O% p( f2 s, D- q4 x5 S4 _
  M+ N, E( r( h2 y, R: ?
poll-class
7 N  ~  L% c5 s2 ?+ ~8 U2 |
' h. h% L6 X; w' P1 f2 ]
setup-plots
5 C2 L- `) V+ \% ]

5 Y! {+ ^; D: p6 Zdo-plots
- q' Z4 g8 ]( R: a0 M
end
' o) \; t0 L( ~+ Y( j9 m* h8 D9 o+ {$ s+ W! U7 O
to initialize-settings3 O/ S! d9 r2 n/ W
' h* @" m, j& z1 `* D: |+ W' @6 u6 A
set global-reputation-list []

: c' U6 _1 n- j0 J- J: l( h$ E% d7 }- R
set credibility-list n-values people [0.5]
0 ~% H! `  k, }
: z5 A5 S: H7 J1 X: D& v' l3 f
set honest-service 0

9 l: a; {9 o2 n5 P# C
7 t& f  I3 r7 |set unhonest-service 0

+ i6 N) c0 a. N: P3 c  ]+ `0 u- `5 I1 }. f6 e6 Z  V
set oscillation 0

( I- I6 I) D! O) p8 Z* V- Z* v8 m% v0 u  G0 }# Z* L
set rand-dynamic 0
$ K; t0 `) g0 n9 F
end
5 B8 G7 v- G! C7 T
2 B% k3 Q+ x8 O9 Hto setup-turtles . f- U9 W+ [4 i% V; u5 p# ~, U0 N$ ~! L
set shape "person") L+ b6 l/ ?+ X  M1 a& N
setxy random-xcor random-ycor
! l% B  @( O4 G! }5 o$ Z' c2 [8 Kset trade-record-one []8 E) a# u7 _$ C  r; p

  d1 Q$ }; D- @6 ~" ?5 W' Kset trade-record-all n-values people [(list (? + 1) 0 0)]
7 Q5 a( m+ g; D/ T. j$ D8 p. e4 E, H

4 N( i5 T  P; R0 iset trade-record-current []
3 C5 }, }4 l8 R5 I( d6 {set credibility-receive []) T8 e/ |6 o7 G) |5 @; ?
set local-reputation 0.55 D6 _) L5 g- Y9 v( Q
set neighbor-total 0/ A5 G$ l, `$ v6 R
set trade-times-total 0
% M# F6 c$ i( s/ P& w  Y2 Eset trade-money-total 0
7 x5 S# g; ~/ B& J( ~set customer nobody
) o; R9 A+ ]6 k& A8 @3 G) U. Fset credibility-all n-values people [creat-credibility]+ K! ~/ C: \6 l4 c1 Z4 |; ]) Q# R
set credibility n-values people [-1]" H2 `& G7 `. T; y3 y
get-color) `1 `5 E3 g% O" I6 w
1 T7 F! S% [: M) E, p
end# Z" f! M# N" s" O+ B. E  B
; s3 ~0 @* @& C( I4 T6 A: R
to-report creat-credibility8 E5 T: R& B8 j% z" O$ ]
report n-values people [0.5]
& O1 t  o/ x7 o) C7 l) h, gend
8 k; C9 j$ K; r! }! U. x5 z9 A' Y2 J: A) M
to setup-plots. r2 \, x- e! y1 v! z1 @; I6 W) J
! W7 W, {# F+ f7 H
set xmax 30
: {, s" M8 v. N7 _, T* f; X2 X
/ T; W% H/ ~" |
set ymax 1.0
9 @0 G3 M( e, q- A0 F- ?: f
9 L! J2 m5 u& {7 A; ^
clear-all-plots

# V# c/ A0 q8 s2 S
, G# D' J6 _, R! rsetup-plot1

4 e/ {  H9 o! L: y- A! E6 P$ y9 }# S& R: |2 F
setup-plot2
3 }: D# d6 |7 x8 ~/ x8 n2 X

" f0 N" ~! r  Z) ssetup-plot3

- @3 E4 E9 w' E5 b0 Z6 mend
8 w+ M( ?* V% T2 o4 g  T  E3 l% K" Y; I  V7 A0 k
;;run time procedures
$ Z) b+ n7 R$ q& {; [$ g, D5 y4 N. r% H7 ^* N; I  v6 O
to go5 J5 _1 a* @/ g5 ]2 e

# Q$ L) J- V& R5 Kask turtles [do-business]

+ j# ?# O2 H7 M* d0 e' D4 Qend1 c2 G5 @" q6 i: n4 u2 C. A8 h

. j2 @" n2 [8 V" ?; d- bto do-business
) u: _" o0 K3 X8 q2 l% p) c/ |' t

( R! ~8 A4 P! `% {3 ~, [( S( w- L+ u7 c' m+ C4 ?+ h( n
rt random 360
2 {# ~( a  s) K# }6 t0 \0 F$ s
6 f6 p6 E7 v  Q0 m! {  v7 h- |
fd 1
0 M5 S) d9 k% V$ \0 v, P: O: M

6 o( f4 H3 l- D- {( [' s  Q( Nifelse(other turtles-here != nobody)[
# R4 }* Y- b3 E
3 A) ]) s5 A) I" k  l& R! Q
set customer one-of other turtles-here

. I3 l3 n% z" f  W$ q, @
  Z, M& J: _* I3 \- g  [;; set [customer] of customer myself

6 k+ L- X9 f# z( G
; R  h, I8 D. f4 v# iset [trade-record-one] of self item (([who] of customer) - 1)
+ A$ ]4 U# E- R[trade-record-all]of self( a- |7 D, ]+ |6 V
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
! A: X- \4 l* a2 q: i
8 |4 m# ^2 u& W, J- ~5 a
set [trade-record-one] of customer item (([who] of self) - 1)% `; r" a' g& F$ J9 c1 O
[trade-record-all]of customer
% \: t: t$ x- B) `' E" I

2 E* Q$ |3 @- Z/ ^8 M2 a! D7 [set [trade-record-one-len] of self length [trade-record-one] of self

4 c+ [5 D0 Y1 f( n8 G
, }+ e: J. P( |) d8 n  q; oset trade-record-current( list (timer) (random money-upper-limit))
+ S$ d/ f* j7 p2 J3 O
( w5 O: l7 O0 O3 W
ask self [do-trust]
6 L( S0 x( i9 g; F;;
先求ij的信任度
$ n* R) j1 w* G9 j; y% b  o
' F9 \' ~% U% eif ([trust-ok] of self)
3 D1 U0 U1 Z& [) W, u9 q;;
根据ij的信任度来决定是否与j进行交易[
/ A: a; [/ ?! S! Qask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
0 [/ b! G% f' W, q+ `
( J, `8 d2 C1 p( _. A5 t6 o[

, I6 U. L% G+ t4 d3 E0 a2 O! @; J9 Z7 m: v* y7 J
do-trade

8 l2 H/ c1 t5 x$ X
0 ]; G1 U, U4 n% _+ qupdate-credibility-ijl

! q* O& d$ `; m% p; R- n9 W5 ]: c: W& S
update-credibility-list/ g% Y$ N- r# H1 I
( g' K/ |; p/ M5 U; g1 A* o5 i- c

$ N; d2 c, q4 b4 Y: }update-global-reputation-list

5 {9 t. U3 M/ w  _9 |! k! ]6 t3 o8 s7 f7 c7 P( k( ^1 N' a8 @% J
poll-class
! g2 e  T% @/ h1 {0 ]

4 y) Y: `: `" {) B/ \get-color
1 X& N  m/ Y7 a8 Y# D
2 T4 I: O, g' C0 x1 B8 L; Y
]]! D' X% v: l/ g6 [2 N+ ]4 J; y
9 F3 M0 e( v1 C4 t
;;
如果所得的信任度满足条件,则进行交易8 C" g6 W0 u" [, ?) e
% L1 l" p: a" f; M
[

2 y" N$ f+ g+ t8 Q" ^" s' u  q7 o$ f5 d0 T9 q  |6 H
rt random 360

" X$ E  ~; [6 @. ]' ~! Q( a8 n9 m+ `6 @( q; b
fd 1

- g0 _- t5 \$ Y( g& m" k2 r# e8 |; D0 p
]

- q/ Q/ o: ^% p2 w' W0 J
  X5 H6 i2 ^( y! G4 Q" B7 \8 }( pend

; J2 B# f: R- l" X  V$ p! ?0 Y+ y" u/ @/ b) M; d/ t
to do-trust
% [; [) V( v" V- q& p9 F, l: Y- G* Iset trust-ok False
9 u3 k# s. z  w
( r7 e5 D2 g# M2 a& F! g

) T0 T4 s% }% Plet max-trade-times 0% q1 b, i" r' {' y2 z8 ^6 ?) K
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
" C& b$ w9 U: g5 _% G2 Glet max-trade-money 07 ^, ?6 ^" x; f- [7 |
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]6 q- z/ z2 l6 A: c$ U
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))+ p4 h" y. C! M3 w% i6 m+ x8 t* ]

4 I- P2 V9 @( f) r

& f' v) f# _5 @; j& C0 O1 p1 \get-global-proportion6 R9 @. h! w; T( S! i) x, z. }
let trust-value. I% N, _# {( ]6 g0 b" R
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)

2 u& D% |6 G& V. l5 fif(trust-value > trade-trust-value)7 d( H1 ~$ o) \9 M6 O2 \  ~+ V
[set trust-ok true]" j' W/ H- r+ E! `) x
end! j! F& q: k1 @$ g5 |* |& p
& ?0 G; \/ |! n& S3 p2 R6 U1 E
to get-global-proportion: R: G: F' a5 s  u
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
* [9 H+ @" o$ |. k9 r[set global-proportion 0]6 _" Y( U* v1 y! A2 X) U( }
[let i 0
* x  P  E  V9 L) Q) a+ l( Q8 klet sum-money 0
  ?% _3 `& |3 |0 h" E) k; fwhile[ i < people]- ]! h; m+ y* t2 q, A8 _
[
# h$ L5 s6 D( w" H( b! H3 \1 ~! {; Aif( length (item i
- \( U7 l! \- \7 T, K; r( i[trade-record-all] of customer) > 3 )

: r1 s3 K8 K+ ^5 Q[
5 n. Z9 O3 u8 q, o1 C! fset sum-money (sum-money + item 2(item i [trade-record-all] of myself))) k8 Q" ^0 y$ o
]
$ W" r- I1 w8 b! c]& Y0 D  r6 o* q0 R
let j 0
. f3 a) q# G+ g. d# _let note 0
( a6 V& P0 I- \+ Hwhile[ j < people]
3 Y8 a, v- z0 A" N5 k; w& ][
  T: H7 z! r* w$ I0 jif( length (item i
2 \3 g4 R" s6 U3 H* R. ^[trade-record-all] of customer) > 3 )

/ ~) Z4 u0 |+ c) O6 n[
* l' `' N1 ?9 R( wifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
$ e5 j3 X( b) J: ]* W) Q3 M[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]& ]$ g+ S" t; R
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]& @  q# ~% k9 q: i
]
5 d5 e% u" F& i$ d' x]
: s+ ?# X* D2 Xset global-proportion note
; [1 Z3 ^: P+ p/ w& q]" }3 H/ Y, V8 ]' {) U0 E
end
! h! g/ p; ^2 i/ r+ h- Q
8 L5 a; T# N, Y' M/ _to do-trade
+ l% [8 ]& W8 t) z3 O;;
这个过程实际上是给双方作出评价的过程
' G. F' h- ?, f, u2 m% Zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
) y/ R; z! A( B$ u/ S* g: ~set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价7 H: P4 w  T! j9 b) ]2 U" J3 `
set trade-record-current lput(timer) trade-record-current2 o4 V% l* g5 l8 l
;;
评价时间- l+ I  P8 q* v/ R9 R
ask myself [
* ?0 v8 h! R* ~" [# D  T+ b4 cupdate-local-reputation; ?% E  D, z4 V& m' G" F$ r1 J
set trade-record-current lput([local-reputation] of myself) trade-record-current
( [+ m9 e: O9 r+ c]
$ M5 X" h) K( W8 h% q5 aset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
* E" j: H9 w5 S2 k1 W;;
将此次交易的记录加入到trade-record-one
5 |* u6 x4 F- w) D" m, Nset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)/ q, N% K6 y2 y3 ^
let note (item 2 trade-record-current )7 d6 p1 l% M% ^- j. t
set trade-record-current8 Z( `) c: R! q2 n/ T
(replace-item 2 trade-record-current (item 3 trade-record-current))
0 k5 T; M6 U. p7 F4 Y9 }
set trade-record-current
- r: r) |) M+ f+ [) ?3 z(replace-item 3 trade-record-current note)
* p; l5 `, u  {0 _+ C. `- b$ k7 N# L3 ^1 V
2 f1 ^: J' s8 j: L9 m* @5 ~) ~- [
ask customer [% O# B$ B* W$ c* ^/ }! S3 x  F
update-local-reputation
* L$ \( o, l+ O7 }2 `9 zset trade-record-current
1 f: g7 ^  x) K. k: l; x: i4 G(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
) Q2 h" i9 E9 f6 K8 Z9 k
]
! t& D/ N+ A; ]4 r. n/ T# z( l/ o0 @, T( |

5 v: Z: p- M, [set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer( B* t( V' |* v; X6 r/ j

& I& N# g4 F9 x; g* a8 }( R% Aset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))' i: j3 J' T$ W( p) J  A
;;
将此次交易的记录加入到customertrade-record-all7 P0 P- T1 Q  D* O2 e6 p
end: O+ P4 v: y. J) D' H

$ N& r  j3 |  }3 N; d3 f3 Yto update-local-reputation8 D1 {# E/ c. [7 o
set [trade-record-one-len] of myself length [trade-record-one] of myself
) C, @+ a0 D* X+ x! |; S5 s5 j( T1 e4 j! t3 F9 N4 t4 p- y
( \2 H$ K3 q2 l
;;if [trade-record-one-len] of myself > 3

1 q5 o' Y* x# M- aupdate-neighbor-total. ~5 e: D% L- y" E) N7 T' X5 G- d
;;
更新邻居节点的数目,在此进行+ w3 A) [5 ?% o
let i 33 U  W+ K( t0 t0 i
let sum-time 0
) D' _6 l2 S! C; U3 z1 m$ O% zwhile[i < [trade-record-one-len] of myself]$ |  @: v5 k5 I9 ]4 \
[4 H7 ^. Q5 G6 k" F& R
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
/ B/ y% m# }3 q' z7 e! Wset i( B- G4 m, e+ P' s/ @
( i + 1)
: l' E! z" P. y: C2 Q4 H! t) `
]: M' l3 z# {) K( i. W
let j 3  z  k: w) f+ J: }2 n" M
let sum-money 0
- a( @5 b- |/ h3 C, xwhile[j < [trade-record-one-len] of myself]8 O- ^2 W. E3 n: G( I% h2 h
[2 \( C3 t- c7 Y" N" p
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)
6 d6 O" s% g; {% `# D1 R; w+ ?set j
# s4 }+ X6 Z9 A2 E( j + 1)

* Z3 ?# r2 ]3 @7 }2 b5 }: d) r4 H]: O! X# ?" G- a7 _( L/ m4 G2 q
let k 3
- t+ k! W& b4 W& R; ^let power 0
$ x% u* ~" _0 klet local 0' y* W4 F# ^9 o6 |" A+ d% v
while [k <[trade-record-one-len] of myself]5 z1 D" @& S! N9 W7 X1 |/ D" d8 L
[  l/ W0 ^8 Y" P' H, E/ x: c7 g
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)
4 v& a- _  P2 V. U% m0 p& Eset k (k + 1)
4 M( e  E$ l8 N+ ^$ ^]
/ }5 a% C. ~, L+ y" yset [local-reputation] of myself (local)
# q- d3 S5 n- N/ b6 q  [- j! Z2 S! uend
/ u# _9 L  v% P6 Y" P: g' K
' @  }7 w8 m1 U8 r/ ?, d3 lto update-neighbor-total% p) P: W' L9 F& h+ k0 T

: Z7 ?! W' ?. w; Gif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ], w3 ?9 w* g" b% h/ y5 \. `- M

% e0 R% _& f9 A9 x" m2 `5 S
+ ^; u9 Z* I, P) P/ B+ Z
end
9 I# F1 b; [0 f  d
" f0 @4 y2 l3 w. g8 Hto update-credibility-ijl
" }/ K) B6 _( @& }3 b# c7 t
" }# I9 i' }+ X( G' @) @2 F( v;;
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。
) Y2 [+ F/ D2 Slet l 0
3 n8 p, ^: K* ^  Z# P& \while[ l < people ]
% e$ F0 }' H- ^, \. E( X5 l. Y) e;;
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- J1 `: G# M6 q. m( L) x
[
" j. s4 s: u4 Vlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)7 T1 L9 ?( Q- I
if (trade-record-one-j-l-len > 3)
4 _- Z* ?+ z& h1 w7 N; d. t[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! l; _3 N) v% g
let i 3
+ L- Q' m! @) A$ t9 J2 ]" q6 nlet sum-time 0( k6 o$ U6 f8 V2 m) w: |$ O* C! Q5 N* C
while[i < trade-record-one-len]
, `# G9 V, @# ]+ q) H  M[% V+ Q' X8 C. g
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )4 E- ]& n% j0 G- G
set i
8 Q/ ^/ ~6 U/ ?) o4 I# z" v2 e6 b% e" _( i + 1)

' s# P* ~) o3 K/ Z- K( K% k]
9 a4 C/ f, v( O+ ^& Ulet credibility-i-j-l 0
% g* R9 s/ R- _;;i
评价(jjl的评价)
2 f% f9 ]" P' M  flet j 3
% ]: c3 {; D2 E9 `let k 4) P$ R3 ]& a3 v
while[j < trade-record-one-len]
; A" M' q" [8 A7 b6 M) ^[1 H' b: L3 D  I7 F( I4 T
while [((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
9 {. m7 e4 X9 S1 s' [" _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)
$ X, Y& F8 V$ E$ Q8 M. k/ U- Yset j( u7 x  ~% Y' ^6 [& b" Q: J* L
( j + 1)
+ X: b3 D/ a: t% j5 Y' k! \
]  j# @  I# w4 T' z$ r$ F
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 ))* y7 D0 `; K# G+ Y
. i: i; N' b( ]7 K6 e$ W

$ k5 i  q# |! x  g) a/ d4 `let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
$ S4 e$ t9 G  |4 n: Q  V;;
及时更新il的评价质量的评价
3 [9 M6 O5 R5 F/ A& Mset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
6 Y* N9 L% r* ~5 ]9 _set l (l + 1)
, p6 J. @4 U2 _6 `8 n9 i, l  b5 t]/ y( Q8 G8 C  ]+ }, E- r1 q
end: e  a" m- j( e4 j

4 u6 i; t" M$ [' Eto update-credibility-list( J& s' W2 A. w' y' R7 Q/ v( h
let i 0
7 s* M/ u& Y0 N3 Dwhile[i < people]3 W! B$ B& U1 e& i6 Y- l- P% D0 M* O
[
% m2 w# q" z/ {9 t1 T3 ]+ G3 nlet j 0
6 e& S: t; p5 K1 {! D0 ]let note 0
5 `( X( p- A3 d9 c" P0 X% glet k 0
# P8 c3 |6 I# l$ m8 u  m& {;;
计作出过评价的邻居节点的数目3 `  H: D3 f: g9 }/ p! I2 t" M! e+ L
while[j < people]
' s1 f! T- [; M( V5 K1 Z[
7 ]4 ]$ P, f  m5 mif (item j( [credibility] of turtle (i + 1)) != -1)
5 \8 ~5 f* e( Y% _;;
判断是否给本turtle的评价质量做出过评价的节点! b  y" }% ?- [, I2 Z* W# `5 t
[set note (note + item j ([credibility]of turtle (i + 1)))
! s3 K/ D( M- ~. G8 j;;*(exp (-(people - 2)))/(people - 2))]

; F4 m8 w2 z/ Z2 B' m* tset k (k + 1)6 y. h6 z8 s5 S* S
]
4 ~. f% R; m' c" s; W% R1 ?3 Xset j (j + 1)
7 I; W8 ]8 L8 N]* f7 D5 ^% v- r6 s6 u( m- p, [
set note (note *(exp (- (1 / k)))/ k)- y6 ^& v" f) Y+ l) Z- X& V, d
set credibility-list (replace-item i credibility-list note)+ ~9 q$ E9 t; _; v
set i (i + 1)( K4 ?8 v( r/ U
]
! `( W$ D4 V% k9 ?' gend
* r; }" U% }+ I5 g% h$ l5 N: o5 ~" y' u4 a# N
to update-global-reputation-list* ], y3 P) s+ a" _/ I
let j 0/ r* @7 e* o- C/ K; H1 b
while[j < people]+ A+ n" C1 A. U' E6 ^
[6 f" l3 E4 T: s! }
let new 0  t9 g4 [$ [3 j- Z6 v  f
;;
暂存新的一个全局声誉5 x5 d4 N; c* I1 T: w' Y2 |
let i 00 C, E" d& L, Y! m" ]4 i
let sum-money 0
  `3 E( ~+ ~; C! Q8 q6 ilet credibility-money 0
) F, u% H4 B; Vwhile [i < people]
8 J+ P! Z2 q" B" y[
) S# d1 H- L, F4 [- yset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
! A( ?3 N, a6 xset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)). ]2 `! E  M$ G+ @/ Y
set i (i + 1)
! `# [3 g% f2 K% `- f. U+ @]7 [9 a. I. D0 R. q+ h/ p
let k 0
6 O( w9 u; R% I! m" N! v7 X1 ?: Llet new1 0
/ r4 i( s" k4 D4 u- ^9 F6 ?while [k < people]# M! n% _8 H3 e& v" G% h
[3 ~; p% n- B' d1 f% o- C3 s/ S
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)# ]/ c" p" T! h/ I$ l
set k (k + 1)
, K) e2 m+ w$ X# ], |' v) o; w* r7 [. k]: x) q) c1 K4 H8 y
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
& w! l  p9 P7 \- P8 j8 j+ lset global-reputation-list (replace-item j global-reputation-list new)
6 D. L+ u$ S3 rset j (j + 1)
7 f! Y. x  O: ^9 d]
: x0 s$ h7 i: h6 ~; wend
5 C9 F( [/ R7 d+ P! N
; k3 ^5 T. i' j. i1 W0 f% f
. ?" E4 Q& R/ X7 F1 Q4 y
/ {& y7 G5 ]5 }) N4 y% V0 S: Lto get-color" Z2 [7 t! b" @; g7 Z- M
- }2 Z' }/ `3 V& z9 E
set color blue
8 `% V5 v* _2 f7 h1 x
end
9 p( s, o5 d+ y0 \2 K  `
4 F- z% N* {/ x' V3 J' ]% M+ kto poll-class7 q# a, H0 s. q) m
end* D: T& z" W5 o/ O$ a; t
% _: Z! z$ Q3 o7 A8 l1 ~
to setup-plot1
, `. r, I5 K5 e. m$ d
. s0 c  [: K6 T& |set-current-plot "Trends-of-Local-reputation"

+ E$ M. i( k+ k& U* Z# D4 ~! y! L: j
set-plot-x-range 0 xmax
% Q& ]- Y1 m* E4 D/ `* \
2 Y4 ^" q1 @: \3 t5 [. B
set-plot-y-range 0.0 ymax
( u" r# x0 q  k4 m$ t
end- Y2 ?; w9 ~1 l# t% A

* g/ `; S/ {! E6 l( G6 r7 Fto setup-plot2/ h" ^7 M" r- }" c/ |6 E: H! Q& ?
; X! D  y' L3 X" k' a6 ~+ b9 `
set-current-plot "Trends-of-global-reputation"

1 U4 s/ x3 O6 F9 ?3 m1 U: n1 r; G' i4 \7 L& ]
set-plot-x-range 0 xmax

& M3 p1 ~; v, [: M2 u" X$ z5 d% r+ M8 L8 E& @6 @: P  F
set-plot-y-range 0.0 ymax

& P4 A. Y* b6 Y, X* [end1 N, L# S& {- x" W3 r, Z; U
* S0 s# h( R' {
to setup-plot3, ^3 I; }- C, i+ M3 F

) `; e' ^% ]& e8 k0 sset-current-plot "Trends-of-credibility"

  N3 [3 q) `7 r$ u4 h, \
, c3 i4 m+ G: M' B2 D4 a/ g: x) cset-plot-x-range 0 xmax
4 r2 y3 ~7 H7 c+ L: N* j7 w4 O) h
0 i- w2 z8 Z# Y+ `: Y
set-plot-y-range 0.0 ymax
0 u* _2 m' e7 n: t
end
4 X  Y% m6 ?2 p+ {" {
: k& c: u" Q6 h, Z: p0 Sto do-plots+ R$ C4 B8 i) ?1 h
set-current-plot "Trends-of-Local-reputation"$ i/ j- Q9 M) O+ {  _: K% [
set-current-plot-pen "Honest service"% x, n3 [+ A+ y9 k1 N8 ^0 V+ H6 ^
end
+ A" h6 b  `5 I
# Q  O( c( s4 W, |8 u4 V[ 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.
+ G5 W0 `& y. Y) @$ O" D, V4 W1 U( o6 [0 j% V- F. e5 r
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, 2026-1-27 05:48 , Processed in 0.034113 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