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: 17933|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:
4 s8 a9 |/ Z' A8 Kto do-business
# q( A- M" h2 `! p2 |2 M/ u0 W2 c rt random 360, }) g0 c9 E; P" ~3 {/ Y8 d
fd 1
) P4 S( u: c7 x ifelse(other turtles-here != nobody)[
  G) {1 _/ h3 e   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.6 p0 k& @4 l4 a+ _, ^8 ?+ ~
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
6 S5 g, L3 q& [) |. ^4 r* G   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
: |' k1 E4 Z4 ?* f2 w% a/ S   set [trade-record-one-len] of self length [trade-record-one] of self( X3 @9 a* Y% E0 L8 B5 i
   set trade-record-current( list (timer) (random money-upper-limit))+ T3 c) v' Q. c* G7 M% M4 ^: B
9 L% x6 ^7 A9 s5 K& f
问题的提示如下:
& A6 _2 {# ~, q: d$ z) i% @) q/ t% k# K: w6 ~2 R
error while turtle 50 running OF in procedure DO-BUSINESS
9 \7 n' l0 i# ?- M! f( V  called by procedure GO1 ^: j/ B$ A1 d* L# ?
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
; j( u* ^! {! c. c/ V5 C
(halted running of go)
, L& O0 R; U8 V: b9 K+ T
8 ?* q! f3 q7 \3 T! e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~~
' Q9 M' C3 l* |* G2 R1 M# r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' r" \0 @# u* {; z
globals[6 N" g9 D) @6 b
xmax
: r  L# k3 B0 {' lymax0 V9 h: r5 l7 T2 L  h/ `5 @; W
global-reputation-list
' K6 B( T4 ]& o
& B& F1 Z' f4 p4 o;;
每一个turtle的全局声誉都存在此LIST  X3 {5 Q- S0 O, E
credibility-list
! D0 C% a' D3 ?# L% n;;
每一个turtle的评价可信度- X3 j/ f% z$ s; ?: r
honest-service
$ M- R, p* V$ ~# ^) h5 X" `unhonest-service
1 j* w6 j2 t( j" eoscillation" I# j' V: D3 _5 R  G' U
rand-dynamic
- T3 p# A# D4 G: }0 h9 w]% u, m& J8 {& Q* J# X/ E/ ^8 R' d
! y% _) f* \0 A. _6 r4 T. N5 Q! x
turtles-own[; P( S' D" R0 {( m5 ?, h9 `* t* R
trade-record-all3 @$ r3 z( p9 S0 k
;;a list of lists,
trade-record-one组成' n6 a$ ?' O# }- P
trade-record-one+ _/ y# s& g$ E$ E. v/ K) E9 V
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
! m4 j2 v4 U6 w* B% S, d' a0 ]( C9 {: k' e
;;[
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]]
9 S" |8 I+ X7 Ttrade-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]5 ^* v! m4 F* s; a
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
# `) o& Q! s  ^3 Gneighbor-total
, j% Z7 C- _4 a( |4 }' U' a( _! f;;
记录该turtle的邻居节点的数目
6 M9 ~# k! e6 D) Qtrade-time" G! x: @- p/ \
;;
当前发生交易的turtle的交易时间
& {& I% M: X1 Q! N# ^8 Z# y: jappraise-give: h! Y0 z- m& ~# ~# k" z
;;
当前发生交易时给出的评价1 d9 P1 Z+ N+ ]0 I  h) A
appraise-receive  T$ ~& G3 W: x) v4 ~0 s% n7 K# a8 J
;;
当前发生交易时收到的评价
) ^6 l7 i( q- A2 \- t/ eappraise-time! ^& L" j. g' l7 @7 q2 m
;;
当前发生交易时的评价时间6 J$ d/ Z* ]% ~6 F6 g+ F# b
local-reputation-now;;此次交易后相对于对方turtle的局部声誉* a( O3 W  @. P
trade-times-total& h; q( C8 y. \4 T
;;
与当前turtle的交易总次数
/ g+ \- |) @7 ]trade-money-total
0 H7 a3 o& V6 n, P  X1 s;;
与当前turtle的交易总金额3 C0 n# K9 K7 m( `/ \/ x6 ^4 `
local-reputation
1 U4 G9 P/ O2 R$ u1 M2 Zglobal-reputation
6 m. [" O5 Y& m3 p1 P+ u. Lcredibility6 h# O3 M/ z( h! O) M+ f- ^' @
;;
评价可信度,每次交易后都需要更新
8 Q, l1 ~0 {; G& jcredibility-all
! [0 j2 d+ u& n3 i5 `! a/ R+ f& ], @;;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; {- x' q- _& l& t+ f

" C" t- w2 u! V# F+ z2 I6 @+ ?3 @3 C;;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
% o% L; X, A8 z+ K& ecredibility-one
# N; u6 [% A1 _/ R+ A, ~  Z;;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
/ ^7 b# J7 F# U# I- D* L) g, |" V9 H  ?global-proportion
$ w# `( X* Y3 Q- p! X( c" Scustomer) R; n# b, G: N+ P
customer-no
+ w* G5 l% s6 j/ h# p, utrust-ok
. M6 b+ P+ ?8 A5 n- vtrade-record-one-len;;trade-record-one的长度
$ w% o$ F$ \; G1 k: ^]
! B: B9 g0 `# X7 {" ?9 k5 B( t: }. J, O
;;setup procedure
; ]6 h. k) x2 D6 ~7 M  d
* D6 u, Y: K4 _; n4 e1 Zto setup
2 F+ ~: N  [3 v- w: `9 N8 X7 p0 H8 T& y
ca

: v! L6 x, w' {6 D! x2 d8 V/ t% q. X; _9 M9 Z% ]1 }
initialize-settings

7 n0 \, j: K0 w: ?3 H9 I+ ]# U% L/ T5 p- ~, U
crt people [setup-turtles]
% R- |2 w$ ]; z

! D& F2 B6 \8 x% jreset-timer

. x3 @4 C. ]4 G% @$ l- C: N) ^; j
! c, K6 }3 e8 t) c* upoll-class

* s1 W+ v5 g% [* X. ?4 @
0 @9 e; u8 T( U/ H- [3 y( [setup-plots

4 @2 }" |1 ?$ Y) V& j/ ^3 N7 L0 d; z6 R$ b; U. g+ u7 m2 C# _
do-plots
& U% G1 [" ^* F  q; m0 n! z) K
end
8 h1 V% u, ~& D3 H6 u. B* ]% u) [8 f, D2 s! _5 W! d
to initialize-settings0 E# U! @. D$ o! D

# n# k5 `) B7 ~: uset global-reputation-list []
1 J+ A  o+ W  H$ `6 h
$ G: b$ q, T8 l1 F  A) @) M
set credibility-list n-values people [0.5]
: o3 x3 }1 {' E; x

( Y* j6 E, o. T4 t7 S5 q: j# G$ rset honest-service 0

1 ^5 Y* n& R4 U" d" [, r6 N
5 I' n9 c: H; nset unhonest-service 0

: p; x6 p) i! P* I+ g% ]
3 h/ @) Y" C: A' Iset oscillation 0
0 [; z& q% q9 u$ S" K9 X

8 w( W9 ^8 U5 w# q" Y! cset rand-dynamic 0
& `3 S$ @, C1 ^/ c+ W. O& }
end4 c6 U8 G2 X* A; r& j9 H

" w& Z8 `8 Q& r1 v6 m% V4 Zto setup-turtles
8 e; X9 J) R" jset shape "person"  H7 _$ [1 R  W7 m$ X  Y
setxy random-xcor random-ycor
' o, m) r' \9 l1 b3 ^' Sset trade-record-one []0 D9 \; O8 u8 Z( n$ s; _
' N' z  \# `# T. s. z$ e
set trade-record-all n-values people [(list (? + 1) 0 0)] 9 s! D* j+ Z" W9 L$ t1 R

  [/ M. B& T$ S3 t' |7 B9 xset trade-record-current []
$ z- ^9 z* s5 h+ cset credibility-receive []
+ v$ W& k: K( T8 b- m# C6 \set local-reputation 0.5% ]! B! @% ^0 M6 g
set neighbor-total 0& K$ s0 p7 N$ B9 ^' r, @& o
set trade-times-total 06 P0 S0 S2 w7 {" ?% m
set trade-money-total 0
: ?5 e9 A$ Q% P. u# Z, }5 ]9 nset customer nobody2 t( @5 t) |4 f) V9 ~
set credibility-all n-values people [creat-credibility]
" j6 k" x! J+ qset credibility n-values people [-1]+ O3 T* T; e# q
get-color
9 L) `- ]1 t3 c* d2 {
7 D, f2 X( z7 T4 H  C
end& {, Y+ _; `5 H( k
6 X. ?2 ]# |+ B1 q, I8 |
to-report creat-credibility
2 s3 A) U( K) S, i: u( }report n-values people [0.5]
: e8 Z4 R& ?* Nend' e% |% }$ [$ }

1 ?1 C" q" y0 K; Lto setup-plots
+ Q3 `3 m0 c# Q+ d. `9 F! N6 R7 @; f0 c; k- C
set xmax 30

& Q- r2 Q( h+ h$ q# T) _; ^1 y( P
0 I9 s( W6 u* I" S+ E* R3 x  Vset ymax 1.0

: {, s- E1 C2 Z$ y* h1 d0 p7 u# h) Q9 v" k
clear-all-plots

" K! _* ]$ \. n, x9 ^; S+ H: Q  ]: q0 r
setup-plot1
6 ]5 t+ U! r; n- H2 m

5 n/ H" B8 S4 E$ r+ ?8 ^. dsetup-plot2

! H5 G! ~/ q5 J4 `1 x
. g  k  [4 O- o7 Ysetup-plot3

0 \9 m( n/ ?% Tend
. e5 [  k( X$ K& b9 _4 ~" _6 D" j+ s; J  b- u- ?
;;run time procedures
. f% f- J, b2 ~8 k* r
6 }9 S+ W& H% }7 p3 O4 V, r/ K% Xto go( V9 u3 D7 b9 V" p  z2 P: E& B. d
- X$ X. O$ G9 P& n1 ]2 `) W
ask turtles [do-business]

. d/ Q8 {) k6 Z% h( _7 d( ~end
9 F3 j3 X# W% K- T$ \3 Q( L8 b" L: [
to do-business
2 g! m7 ^7 y0 C5 V4 H" K; \

0 W( a& \* O6 ^5 e( T3 A9 J3 v0 Q  s
rt random 360

' v* v, d% b( a8 p9 }9 i5 H( ]  y: |2 _  `: y
fd 1

7 O# G+ |4 E# i. F$ W* D0 \0 ?' v* j+ F+ W1 P! l; M- d# X
ifelse(other turtles-here != nobody)[
! r% |/ t- N( U: ~

: S& @: w' @% s! G0 A9 [' z4 jset customer one-of other turtles-here
5 O  i3 F" i. }/ N

; Y  t* K6 g- c- e- [;; set [customer] of customer myself
6 d; K( Y/ A: \
0 g( O' e  t, s( {9 M5 E9 V. h9 D- D5 [
set [trade-record-one] of self item (([who] of customer) - 1)+ H6 ~$ w* k2 Q+ t2 o" M$ h
[trade-record-all]of self  @& S- g8 v8 |, ~1 J- X3 W6 i
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

; n# b; X9 ]$ }, l  d5 P% H: M( t
set [trade-record-one] of customer item (([who] of self) - 1)
8 f7 z* \% r9 n[trade-record-all]of customer

8 U: }  |0 W: R1 T" y2 H/ l1 m2 ?$ w8 k% H. Y
set [trade-record-one-len] of self length [trade-record-one] of self
- ]; Z/ }0 Q! p, @2 N0 l: J7 W, j

* J# p/ k, x6 M2 M) B, [; `7 y  ?set trade-record-current( list (timer) (random money-upper-limit))
0 d1 h8 t3 B1 X- \" s
# s5 h, R2 }; ^
ask self [do-trust]
* V1 P) V8 C! p6 C) ^  M;;
先求ij的信任度* i( ?1 v. Q* ]* w" k& t
: H( g$ x! B4 Q3 L
if ([trust-ok] of self)% T, J# p. E: `/ n+ k
;;
根据ij的信任度来决定是否与j进行交易[7 ]3 Z9 P& e  K" _; z; m( p2 [% }; s
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself$ o0 r! j3 J% A8 Y$ ~9 i' J+ D

) X# e7 m# s. }, J( u5 I[

1 R9 b9 M8 y1 d3 A/ Z
) G0 `2 E; y  g6 H' r, x" d& Sdo-trade
/ n/ `" {* r7 A  l
+ Y. I, T5 o: B; W# h
update-credibility-ijl
& d0 k8 e; d8 b6 ^, P+ ^5 T: r8 E
6 w6 [- i4 x+ n2 [8 J
update-credibility-list
/ T1 ]1 m' d/ i/ ^$ \
! f- o& p* _  |' W

& p1 m. h) ?7 `update-global-reputation-list
. a( x7 F' u' U. m

, ]# o- s2 }: T2 l& cpoll-class

7 s! w7 n+ Z9 |% ^0 X- Z  ^" }' ^$ W# [6 n
get-color

5 z6 P  E. K( X# r9 @
+ V" v- C/ L8 p! X]]
& X/ T/ e! `6 c" Z. l) G9 A7 ?# _8 t4 v: K% g4 A  }: @
;;
如果所得的信任度满足条件,则进行交易+ K% ~* V, z/ u% q
$ I. ]" h* V  Y/ r. ?+ ^8 E: r4 a! ]
[

* B/ X, _% S7 t+ o/ d$ t
) ^6 \, P# \- ^9 I1 T! q+ |8 Wrt random 360
* Y7 g  z8 F; j+ ^; P1 E1 H
% w  u* _" p. ^& X
fd 1
3 K; C; J' J0 F) Q; p
  z5 ^( v- J  I2 R5 {8 w
]
2 v6 l, m& K& b/ V) f+ f
% H/ o6 Q- e: N* l
end

9 Z! V# y9 B+ ^, R5 k/ T* ^. n9 G/ ^( b( |+ t  b" A3 {* h
to do-trust
  y- X7 P5 ?( h/ _set trust-ok False
7 E& W* G5 ~) q, K4 \7 M$ D/ s; _+ I
; f0 p* M9 E) I3 T% j1 L" {

- Z1 t: D/ O/ T4 R: K6 N( elet max-trade-times 0
3 j( c, A* t% E$ x: tforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]* n" S- G9 A5 s  ], ?0 R: D$ X* }
let max-trade-money 06 l! |& {8 U; M
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
. A8 Y1 e3 w& T% K0 d/ Xlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))6 T6 `+ r1 O0 [; f

; E* F( ~9 P$ S) H! g
& a1 y  q/ E# Z1 _
get-global-proportion  T6 f- ?; s3 a$ N: ]
let trust-value1 k/ }+ w; I% ]
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)
; E' j% a) I3 R, P9 C/ n
if(trust-value > trade-trust-value)
- D' e/ v4 d1 f9 w2 r6 W: Z' t  n[set trust-ok true]
2 x2 F) n& s8 e" \& ^; @end8 }  C) t& i: c% m  R* N4 G* j
$ s" |+ U7 [. Y$ H2 i
to get-global-proportion
, }& c  @: r0 R0 U, @6 jifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3); k, M; U! n9 R# y8 b% V" B
[set global-proportion 0]
  ?  J$ I9 V0 X7 C8 Y# `9 D[let i 0+ {, p4 i! B# ?0 J
let sum-money 0
* E, ?; \% E9 j3 Awhile[ i < people]
" P" e* Z4 a4 h* m6 a6 r1 `4 h[
% [! `/ B6 x0 Yif( length (item i
# \& t) f9 e! S( T. t[trade-record-all] of customer) > 3 )
! b1 U0 A7 l4 e) W, }
[6 K' M; b0 U7 m9 I0 V1 ]
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
, F0 [/ d) D' e0 ]! \8 S( @( @' l4 P]( \0 |' y& }# k  e7 l& F
]/ ^+ _1 i4 }1 w/ V
let j 08 Q' ]) D( ]7 ~7 ^
let note 04 K2 I  ^) C, }: \0 m+ S
while[ j < people]
8 M$ L/ Y0 h0 E+ i# j[
/ x% |3 j4 z* [% dif( length (item i6 a# _+ f$ m9 A' `& R, o
[trade-record-all] of customer) > 3 )

4 j/ @& D/ [. P5 q/ P& ?$ U[1 U& k+ Y4 H* L( ]/ W2 f6 n$ [+ h
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
# E: }% i! W$ P8 S" @3 U[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]4 m7 ^. u/ T+ i" f* N$ o4 X
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
* A9 n/ x% D% ]9 d  g/ ~4 n]9 d2 ?8 b$ l) a2 g6 F& ]
], i7 Y/ \; a1 R$ Q
set global-proportion note
( z. Q# H: E1 t& _# \]
, Z2 f: o0 Q; W& m$ ?7 ^7 c- B0 zend
6 E" Q! {" _, `
( z$ N8 H8 U2 _/ wto do-trade; p' a0 Q. a3 k0 ]- `; O, O
;;
这个过程实际上是给双方作出评价的过程
% N$ R4 x1 I& F) t4 i! Aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价) Q3 M: F; L1 k
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价, Y) H+ z/ `4 A2 @4 P# h
set trade-record-current lput(timer) trade-record-current
5 V% P' {4 \+ `% C3 O9 C, f;;
评价时间2 |" [/ n/ E; M, U
ask myself [
! r5 @8 c% A( K( Nupdate-local-reputation" |/ g. X( ?( e3 m( X
set trade-record-current lput([local-reputation] of myself) trade-record-current
  P) e3 ~9 N+ T7 b]' v6 |. u: \, |$ _, z% I7 a
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself9 s, I! F+ l, D1 [' ?. T5 x
;;
将此次交易的记录加入到trade-record-one
+ a" M) f$ Z: w' n& Zset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
: r/ T& z  a/ a6 c% l( f& ]& vlet note (item 2 trade-record-current ): d( U) ]" q( L9 W1 b
set trade-record-current
. p. ~. g, Z( Q: @0 f/ o6 R4 V# F: j(replace-item 2 trade-record-current (item 3 trade-record-current))
. v* g6 Y! p/ C  c1 t8 u) y- B
set trade-record-current4 e! ]. u$ B! J6 E  Y: y
(replace-item 3 trade-record-current note)! m, G. w8 j  r  t# G6 e- i4 i  n! k

* |8 x& k. b9 E8 R1 a$ D' Z
  k: w: `6 s! n
ask customer [  x( E, a3 u5 }0 n# O& d
update-local-reputation& O5 P4 U/ f! f: N. {9 `
set trade-record-current
% {3 ]2 _2 W/ @5 l' M(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
/ ?3 c9 _% u" H) j. N
]
( V4 k- J! a/ f  E( c6 o
, p3 I- \; G1 \7 H
4 ?3 e+ S* Z4 M0 K% Q# B
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
& \8 R$ W, O- {; _
* p. e6 \3 n' v! p+ q
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))  d5 M. u. W8 ~( h" Q& ~
;;
将此次交易的记录加入到customertrade-record-all
) ^$ J. U# P% ]( r8 _% y6 hend
. R# x- a% ~& w. {# U+ G$ s3 I1 @0 e" ]4 h- X
to update-local-reputation  R3 k% }. \1 ~9 E3 h
set [trade-record-one-len] of myself length [trade-record-one] of myself$ q2 c) M: \) L3 x6 n) T

7 Y2 z1 L( q) B  G% L3 B3 c5 e3 S7 ^) x  b# ]
;;if [trade-record-one-len] of myself > 3
8 V4 `( {) V0 ?6 R7 h, y5 ~
update-neighbor-total* G/ v* T: C. G$ e9 [( r- V+ G
;;
更新邻居节点的数目,在此进行! [- y3 G; m) ~0 C% r  k4 w8 O5 W
let i 3! L( h) ~5 G' V9 L& g  t
let sum-time 08 ~* W+ N8 o" o% E* ]) h. c
while[i < [trade-record-one-len] of myself]
+ z/ K6 y5 \% _6 X2 X[! R0 g( Y& @, c' Y. q3 U
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
0 V$ Q! g  r5 X6 z- E* n% }( Dset i7 H1 H+ ?2 J8 i4 O; Y6 o
( i + 1)

9 H# V' e9 D& i+ v) J7 C]4 m/ I' b! I7 q$ I! {- M1 u; p
let j 3) T& Q1 v, D0 q: ~  u8 }
let sum-money 0
8 F) c' g: l. ?0 P7 e, O6 ]# a/ vwhile[j < [trade-record-one-len] of myself]
! g* Z; ?& |) N, \[/ F+ k0 G* l3 i2 i: R- 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)+ n! S+ w" Q7 U& g8 Q( s
set j
8 Q- J9 G7 P% A0 h2 K( j + 1)
  r- t" m4 L* l- B1 }$ |
]
7 \3 D' w$ Z2 S9 u! ]* Rlet k 3$ U4 H" _( `% u3 [4 h
let power 0
# ^4 V% C0 L, v* Blet local 0. v! M8 V7 K" B; L! Q/ d( k
while [k <[trade-record-one-len] of myself]
! m4 Y- D9 r1 E$ U0 c3 K0 e$ l[
4 e3 K/ w% B0 d' E5 Oset 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)
. s& d; Q+ ~/ K2 qset k (k + 1)0 O' u( F; y. R2 I* l, w2 m8 D
]
" u6 w( c" M7 i8 |8 rset [local-reputation] of myself (local)
7 E9 Z! ^+ m( M; Hend3 O4 S! Y; Z2 w; C
& W8 l+ ], q, i' f
to update-neighbor-total
3 I  o. W* o5 [, S9 ^; K; `, _8 K& ^# h
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]: w; T/ e! H: h5 c

8 e6 |- ^: d3 E0 i

8 N/ i* I9 m2 A' Q- gend3 Z6 d/ X9 p9 g  w! [
0 Q! R/ n  I' f2 `
to update-credibility-ijl 5 ]$ H! F% y/ ^- e+ S7 v( ]
+ W+ B1 v; h* u0 {9 t+ r, l
;;
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。
  H2 K7 N7 r2 h# D. |& Jlet l 05 M, x  W- U! P  a
while[ l < people ]. x) H% |5 \. a" T
;;
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" Z1 _5 O  q) k9 u4 R4 f
[
0 b9 }" r$ g; n* t$ ~% P1 b/ \' @, Ilet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
& R7 p0 `# V3 M- x5 v& |if (trade-record-one-j-l-len > 3)- |( Q5 B/ v$ \% e. B# _
[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
; `# X9 V9 _7 rlet i 35 Y! W' \) i6 ^+ o2 ?
let sum-time 0! B- m1 E' a$ M+ U  j( t  x
while[i < trade-record-one-len]
) O8 T2 h( p8 v- X# f: w$ u[  S+ W/ T) l( n
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )% p0 U$ n) o) h
set i
" n7 ]" l/ z# e* o; Y2 ~' n; l2 L( i + 1)
  Y4 z1 @" ~  F5 U! C' p7 L  L
]
+ ?% P: x6 w+ s6 ^" h& s6 u5 e6 R" Jlet credibility-i-j-l 0' d0 k/ ^7 R; X
;;i
评价(jjl的评价)
6 K- B- I, V" S7 Ilet j 3. n. [5 Q  Z  j7 ^& U$ |  [
let k 4
3 E$ E7 B/ i1 Q7 @% P3 U( W  Mwhile[j < trade-record-one-len]
6 }: Q. U- b" a" i2 l[1 L; F9 S1 h. u4 A  ]
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
( A+ n# h8 V8 P! U  y# xset 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)
8 x5 ~8 g: z; I  Bset j
$ e2 I: m4 y- \( j + 1)

! N  K  f8 w9 s: U]- @0 i/ D0 f7 Y2 Y; 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 ))
: X3 I$ W- z, \( R' L+ r: R) }. m3 E. `2 B/ h7 ~) ?& v+ p8 z) T

: W; w7 m8 j, N9 v0 tlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)); }+ r* ~: U1 R/ Y" y1 I) w
;;
及时更新il的评价质量的评价
; Q6 G9 X6 ~2 M7 b2 P! `$ x7 nset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
7 L; O/ N- k' q* Bset l (l + 1)
/ F! G) N# ]$ G7 f! U]
  Q# e3 J0 Q' _) n/ lend+ O1 M; P8 B' o
: {% J/ C1 n, M% e, ]6 m  W0 U
to update-credibility-list
, k! R' f$ C$ N8 B" l2 F: K5 \let i 0
6 o' g# P9 e& ~% ?while[i < people]5 I+ ~  e* s6 ^! B& B
[# y3 t  r5 @4 X& a5 P0 N! t
let j 0
+ |4 O& U& z/ x; C9 i' k1 w. L; h! w- elet note 0
% U* @! E* J* i% _- Jlet k 0
3 y$ B' V3 ?' q; h6 E- r  ?;;
计作出过评价的邻居节点的数目# Z  _2 q$ O/ c  C  f' ~, I
while[j < people]! B0 U, L5 x6 ~7 L( f
[
3 k0 J) L/ S: b5 m; Z6 _if (item j( [credibility] of turtle (i + 1)) != -1)
: j: y: n9 [8 q, {7 J6 Z;;
判断是否给本turtle的评价质量做出过评价的节点
8 ^' f/ b( L! C5 \[set note (note + item j ([credibility]of turtle (i + 1)))1 R& i' p+ i; D1 E, w: V
;;*(exp (-(people - 2)))/(people - 2))]

7 ]# M# ~% E5 fset k (k + 1)! n" U/ f+ O! C6 T; h* Y5 b. ~/ E
]
# N; n5 v0 r- A  |set j (j + 1)
: ^- w0 T6 e  }' u' H]6 D( H  v4 E0 u+ g7 F  P4 i: M
set note (note *(exp (- (1 / k)))/ k)
) x" `6 q) P" O: S+ yset credibility-list (replace-item i credibility-list note)8 X5 Q* }5 |' A$ d- s" s5 e4 L
set i (i + 1)
' }: \- m; v$ @2 t  B]
) u  F. E! M. _- g3 y# Bend
5 h1 _. K- d6 }2 y- n
4 z0 K( P+ u0 \to update-global-reputation-list
; Q: q7 Z" Q$ [  P$ a# c1 Vlet j 09 `  k8 S' Z( ?0 c. d
while[j < people]
. U+ f/ y8 @# z; s& [! f[( Y- F. y# B; f0 a
let new 0: V) q* i9 ^; Z" @, F
;;
暂存新的一个全局声誉" ]7 |3 q+ c7 X. K8 b
let i 0
( {0 H* |0 N' v1 x# e! `" ~let sum-money 0
' ^8 f/ f& |4 C# o4 klet credibility-money 0
1 R+ a8 D/ r* Z" j3 R' y9 H5 Swhile [i < people]6 {, }( f' j  |7 d% C
[
# P4 _/ f0 |, I7 J) @set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))) W8 z, E# A/ ^. j' V3 Z8 P5 B! V
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) z: T+ s" F) f) m2 S4 J' g  A. q! V
set i (i + 1)4 e2 p) @3 S8 K/ K5 k/ B- v
]5 q5 [! T; v8 h  |4 y
let k 0  S5 Y: R4 C5 e- a: y' `
let new1 0
, L$ ]" M! f4 p( L( z" d7 }- jwhile [k < people], D# |" K  G; O3 H
[' u8 N( K* ~, W, R. G  t
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)
+ e8 z" j+ m* Z9 l/ k1 qset k (k + 1)
* x$ P; q% }1 D]2 E  s1 {% H! C* h0 h
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
- S2 f! m! d& h* Fset global-reputation-list (replace-item j global-reputation-list new)* @" ~- Q5 ]( F' Z. w
set j (j + 1)( C& O" |5 @2 O( @/ M
]
1 i; h+ @; x0 m" n' j8 w' P. u; Gend
9 P; c0 G' b- I, y( u3 D1 \! H! s5 X% k2 E; E/ m
3 g6 g/ G5 H( f) z+ B  H7 W

/ M) `! C3 H: [9 m9 @& n0 D" {to get-color) `5 n6 h7 Z8 s1 D9 T5 n
7 F. j5 w; e& I4 Z9 K+ }
set color blue
; Q* u( o9 G. X" r  L! d( C4 W
end- M! ~) b' C. `$ n
! R8 ^4 o& D! E8 ^
to poll-class
) u! f5 L$ h1 d" Bend2 Q7 N, y1 r: _
) c; S4 J2 Q$ P4 _# Y' V: M; M
to setup-plot1+ ]- x% N) ^) `$ G: ~, @, \( n
* r" g% |7 \& ~
set-current-plot "Trends-of-Local-reputation"

# h$ ~6 t" _* ~& ?5 N% r- H% ~' ?* l8 L6 z6 r$ c
set-plot-x-range 0 xmax

( `( g; R) X9 C
% Z- Z& g' y+ ]# ~2 ?set-plot-y-range 0.0 ymax

) Q5 M  T& c$ w  Y8 l' G2 q6 p* cend: E; T+ _- e- b- U4 D, I
( B& P/ ^+ A# _% K
to setup-plot2( t  p: x' y; i5 N
) ?9 b. O' d  X% |0 G, R
set-current-plot "Trends-of-global-reputation"

# o: Q8 v/ y& @8 r! ~1 ^. @. p! v9 b2 ^; r; |0 l/ |" d: w# b  q
set-plot-x-range 0 xmax
  o8 F- Q  k9 m6 r+ @

+ N6 q) _" x0 L% V( Q+ Oset-plot-y-range 0.0 ymax

8 Z0 z+ I: o* Y8 send& P& h7 Y& z' z7 r

* ^: E! x# t' w3 |& g0 x" [  _3 ~to setup-plot3
0 Y* ~- u; A& @8 w+ W- o6 |9 B& A0 Y9 L
set-current-plot "Trends-of-credibility"

" ?# _# D5 r: e4 X- R; j, h2 R% n' G8 u! v* i5 H- m
set-plot-x-range 0 xmax

3 n; \+ A) M7 j, Y9 E# E2 J/ F* m  L, A9 y; B
set-plot-y-range 0.0 ymax
/ q/ @5 ^& m4 e# j
end
6 x* O& Y/ n7 i( `8 p2 _% i& Q; h9 \% r$ ^; Y( y7 P4 _( t
to do-plots
5 X/ t& `0 o2 a! m8 J( }; oset-current-plot "Trends-of-Local-reputation"1 d8 \" ^2 v4 x" g; V; |! i
set-current-plot-pen "Honest service"' C+ Z! a+ O$ u8 U" S
end
  G0 j0 s& t+ O, p
4 h' J- B! L# _* P. R& e( B$ N0 w  d[ 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.- g# X  q9 T& J  \; m: h7 @
1 T0 K0 z* h- I8 }0 q: M8 n2 P& A
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
您需要登录后才可以回帖 登录 | 注册

本版积分规则

QQ|Archiver|手机版|SimulWay 道于仿真   

GMT+8, 2026-8-28 17:05 , Processed in 0.021434 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