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: 14104|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:
+ |5 \% \  d  d4 q' J: r; ^to do-business 1 x1 x+ D/ A) b8 a7 J
rt random 360
. w" K8 {1 G% Z2 B: m0 } fd 1; c; |& H# F# W: A9 Y3 q. W
ifelse(other turtles-here != nobody)[
8 ~* T3 }) ?; B+ \) G0 g   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.
0 }3 N% P/ ~) a( i. w: J   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
' g4 J& K3 Y9 T+ y7 {* H/ |   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
3 J8 z+ c* N  Q   set [trade-record-one-len] of self length [trade-record-one] of self
: C" m0 a* [9 |/ R: C2 D. R  d4 L   set trade-record-current( list (timer) (random money-upper-limit))- p, m3 J4 E) ?& T, v1 l

. D; S' X) ~- b8 D6 B问题的提示如下:, \* z# s: m, R6 H  K( i0 f

% ]$ f- D& k% |! X5 K, u  V- oerror while turtle 50 running OF in procedure DO-BUSINESS
7 H$ b6 O6 i: ]! A9 X  called by procedure GO2 q( P5 @* [7 E* A2 f$ Z
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
% L$ r6 S' c, e" y( O
(halted running of go)7 t) Z8 w0 ?, M
7 s# j+ X) n0 O" ]5 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~~# u, Y( Y; S9 Q) H* L+ w  S% ]
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
7 `. S9 U- H, M6 ^1 kglobals[2 k& \$ p# F! L1 a- e$ U
xmax" |! c' h! ~8 y" D' U$ X( V" x
ymax' b6 d* _+ G$ X; P
global-reputation-list
) G" D: X/ b2 z2 ~: L9 L: i/ @) k: t4 q) f
;;
每一个turtle的全局声誉都存在此LIST( F$ |* t5 t" @: k) n( M, z% B& m
credibility-list
% H  |, L" \5 F% X! V+ P;;
每一个turtle的评价可信度
, g: I) X: V2 n5 ?honest-service
+ U7 f4 K' H! {, sunhonest-service' y$ y; S/ @3 [3 M
oscillation
) f2 M5 S% h' K9 L" xrand-dynamic
! d  k( @4 T5 G' ?4 [' K. H% Y7 P]; X7 w& @. C0 R
  l3 q/ V% p9 X: s) g
turtles-own[
  i3 s( b' w. G) j4 h1 Dtrade-record-all
. d, T: _# R/ Q# ];;a list of lists,
trade-record-one组成2 K6 l$ ?+ A3 g+ d
trade-record-one% b) `3 H/ O, c- w
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录1 N) d- S# H# b" m- _3 k- }
; A* d) I$ u6 Y
;;[
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]]
/ L" S$ `3 z5 B: ]5 etrade-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]# H5 V# M# v3 l1 Q1 l
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* Q( P5 ?3 S& r& c9 ]! ^
neighbor-total3 P/ k* ~# T5 J: O" f
;;
记录该turtle的邻居节点的数目: \, V1 `. U* x
trade-time! s7 x. ?; O9 s2 b# ~9 u/ b8 {' C
;;
当前发生交易的turtle的交易时间
3 ?% Y9 L) @5 V' J: X' H  `appraise-give
* X1 [& I) f; A3 ?6 V% l;;
当前发生交易时给出的评价/ Z" O/ w8 b  }7 {4 M
appraise-receive% `  }! {# I; d$ p+ w: f# J
;;
当前发生交易时收到的评价2 u! s$ M+ W* R
appraise-time3 w  S( a. e5 ^% T) l+ c( Y
;;
当前发生交易时的评价时间
' z* D# f. }& G8 g, o- I0 Clocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
. ?5 P; u: I. d: f: ~' H6 @trade-times-total$ Z. _3 _' g: Y3 E* D
;;
与当前turtle的交易总次数
5 a8 u/ I! K. Xtrade-money-total5 W' j5 M) Z9 l1 Y8 Q- |5 k$ q3 n
;;
与当前turtle的交易总金额+ R# |# c) ]# @& C7 w" L
local-reputation
  n1 W. O5 ?* W* P# P! jglobal-reputation5 [; w/ {+ G+ w1 Z5 E# R9 D
credibility
0 S) O1 k: z2 h;;
评价可信度,每次交易后都需要更新
' \$ V8 l2 ?6 W) Y4 S1 A+ Q1 i. V8 Y% kcredibility-all
3 Z$ i/ A5 h9 j$ j! o! J;;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+ J0 z. T! F9 v' E, w6 e. e4 p! s7 a. B
- X# c1 Z' k2 P; P0 L
;;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( H- ?4 H2 C4 G
credibility-one
" ~5 W( }+ s6 J" y& h8 L;;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* w! W8 h9 m% g$ l3 ]: [: b; c7 G
global-proportion
& l3 K" n0 K- a3 p8 Ocustomer
3 H. r/ T- n& w# }& g' [  acustomer-no5 s6 E8 h/ k" T' Y% `8 U3 H
trust-ok
* m) z; L2 j+ U6 Y/ K- a) `trade-record-one-len;;trade-record-one的长度; G* p, ^9 L5 O/ E4 X6 |+ j  i0 u
]( A! |- Q" ~9 P

" n$ z7 \; p7 G! j;;setup procedure, b# n* E: Q! ^- f8 \

  I7 ?; Q8 G5 I  C0 ~to setup
% k, z$ S, V/ Q% }
& r% w- y2 U: p2 h: rca
7 a7 S2 A0 Y7 [' @
& n& j! {& I$ s" O0 \6 i
initialize-settings
) e  l9 D* a+ F

( c0 k; K6 p3 d+ P+ ^# N) @crt people [setup-turtles]
+ w0 ]$ y- g) {7 e9 v- v4 V( ?
  d2 G, o3 I1 ]& C
reset-timer
2 h* ~* i  d6 ^6 ]* T! \, A
, h  i$ a0 x/ t; f. T- z( ?
poll-class
+ g" c9 j* r+ L: M

! u& L2 R  _+ ?& L: W  O0 {$ Esetup-plots
7 P# W& h, [; P  n! Z
) V/ Y' J: M% D4 u* h( J& S
do-plots

7 w3 U& [5 A  T) z/ H. c5 Pend
2 X9 F0 \: j9 k7 b6 k. E4 K, [9 O5 S6 C
to initialize-settings7 L' L$ G& f. ?
4 }3 Y+ s+ J& s5 q/ _4 g
set global-reputation-list []

5 n3 B% A- z; A6 |) X5 d+ h7 x5 T
8 j# y+ W2 t( R7 ]set credibility-list n-values people [0.5]
4 Y1 w; N6 @% v: t! f
% _! z" ]  Z  W/ H
set honest-service 0
" b( H& d2 l5 z& X; o3 H' E1 _9 V

: v5 U7 F# J' n: y' U% r, tset unhonest-service 0

, y4 @/ Y( O( }+ R: w- U/ C
  K$ H- n0 ^8 N$ Q: Sset oscillation 0

: f* ?; c. b  r
8 |0 J- F, J7 j- E7 T! K1 Jset rand-dynamic 0

8 v2 y+ t2 d$ S3 W# k. i5 N/ Q' z$ H. Aend, a# x/ ~& L7 M( z# p% [- c9 \
/ r* T5 u! q: c- T2 q9 R" Z
to setup-turtles
. ]% }6 x0 m  m( E( _3 vset shape "person"
; n, J" {" _/ ^6 h1 S/ j) D$ Rsetxy random-xcor random-ycor
; e! o: U& G& s2 v- u, s% Pset trade-record-one []) Z. G6 _$ ]. }  U" r( D

) w( j. D7 U& s5 v: ^3 _2 Dset trade-record-all n-values people [(list (? + 1) 0 0)] 3 F0 }3 R1 h+ ]+ K, O

, T9 Q+ x! b$ X8 c* \6 pset trade-record-current []" c4 f) s! k2 {
set credibility-receive []- m9 `2 A# H  h
set local-reputation 0.5
! _" E) E! a( w7 r: c0 eset neighbor-total 0/ Z  J" f+ A* @0 V" w: e( y
set trade-times-total 0, V* g& D( ^: v/ X9 _- l2 ^/ _
set trade-money-total 0# R6 K/ k2 T. E. H# m9 x
set customer nobody, m4 S& f' j2 i5 b
set credibility-all n-values people [creat-credibility]
, R* W4 X1 p& `: V  Nset credibility n-values people [-1]
* I7 F5 v$ x% M/ Vget-color3 y2 \& Q+ [! j& N2 ~% I" Z

: f/ Q7 U! ?, ~- _. Y" Mend
( Y  ]; q. ^3 {6 H$ _, I4 \/ R& v( D8 `3 `$ R; ^; ]  R  c+ P) o; O( r! R1 _
to-report creat-credibility
. L+ F# b- G& \$ creport n-values people [0.5]0 U: l4 n( A1 b) p; k& W! B
end
9 u2 k/ J& f1 `  ?
/ J6 W; a, W' M, q! N4 Z( ]8 |" y9 u  Sto setup-plots
6 I+ g& r# R, a$ ^, E* T/ R0 L. G/ @+ X1 c- |' s8 \/ e3 Q
set xmax 30

  O1 _" I4 A1 j- ^0 ?, z7 j( D4 P  C+ N* i) H/ Q3 d; i5 S& i
set ymax 1.0
4 \& U2 b" ]4 X
" c- r, V4 E& w
clear-all-plots
: Q2 y7 X2 L- i3 a+ H

7 T1 c$ d  j$ H; X* ksetup-plot1
  G( {$ D% m- d  T% G9 |6 b% S$ s
/ W7 v! B" H$ y5 P+ O* J
setup-plot2
, R+ w" U0 J/ V7 v& C

8 t, N7 G/ {, q4 Qsetup-plot3
# t0 i$ h# [. ?
end) m) Y& E8 e# N* u

7 P. k3 k, }# g8 a: u. o; A;;run time procedures9 f6 {4 }' w6 \$ ~* X

+ n' g* C- G9 e  `! \to go
: _& c) Y% z, L9 h/ ~( ^
- H  V5 D- D4 ^! d: _ask turtles [do-business]

& o0 \- V6 j( {+ ]end' ~2 J: `& V% d# L, i5 {

) c! U; f, ]3 U" fto do-business
3 u; d# M$ H7 H  }" Z6 S" T6 K( {
, k, _* I/ r  l; `$ d# b

( X$ K* T' e- V  N* z' yrt random 360
. D+ ?" H/ @% _) p6 C6 W& t6 o  k; p

5 s+ P' D: q# k1 vfd 1

' m. s. c/ A. R
" V# b9 m9 T9 \4 Oifelse(other turtles-here != nobody)[

" k: G; X+ E1 J% g5 F& P" D5 i0 Z, r# _0 Q
set customer one-of other turtles-here
. B- v. p' V6 r: p* h
0 A/ P8 J6 q3 |/ @* x
;; set [customer] of customer myself

1 b$ e( L% h( v0 l$ ?9 @8 f9 l3 M+ I
set [trade-record-one] of self item (([who] of customer) - 1)
# h5 Y+ I% R% I+ N" `[trade-record-all]of self" Y4 B9 U# x) E1 ]
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
( \4 z) b3 Z5 G
* w2 B$ h9 I. Q4 f
set [trade-record-one] of customer item (([who] of self) - 1). D5 P3 V; x+ e- c; \
[trade-record-all]of customer
- A, J7 h; m% |. [$ d( G4 f$ l

" m/ [0 f# ~6 m- {  Jset [trade-record-one-len] of self length [trade-record-one] of self
8 K# Z) }; o+ R' _! E8 @$ W

: l7 h2 }- o" u$ d6 Wset trade-record-current( list (timer) (random money-upper-limit))

) r. p( C- \% v6 z$ ]% K. Z4 r/ m2 J9 p! B* F0 C$ o  G- {
ask self [do-trust]
( H- b+ Y( Z0 n5 c% a2 L' j;;
先求ij的信任度
% D( x  v; @# B
% W* p* u2 E/ y& fif ([trust-ok] of self)
7 B' x* R+ J1 B) F5 E% ~;;
根据ij的信任度来决定是否与j进行交易[" W% @4 L& c! e0 q" D/ \2 T
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself- f$ J; _: u6 q7 S3 N
4 r6 u+ ?2 t4 N& T" ^
[

% f) l$ z  b, ?2 k) G/ L' R  y, f( W3 J9 Q4 G1 g9 S
do-trade
/ R0 a/ T/ x$ M9 Z, m

3 B5 g; g/ u! m- ]# V0 @update-credibility-ijl
! I" H+ L" C, n& j5 T/ Q
9 |( c/ a" w& L% Z% O% n0 J% D
update-credibility-list7 `8 e1 r, m1 N# L% k

( S7 E6 I! w9 v# X) E" Z$ Z7 i
update-global-reputation-list

0 ?4 E+ M- m7 B
; d9 y9 Z/ e1 o+ ^# Qpoll-class

) A% y3 _0 _* `/ [2 E" C) K3 K
9 S3 E! ]. s# _9 @get-color
3 l) G; b! W/ m* @. `" N- U
* z, F' ^) s& I6 m5 t
]]5 w2 r' n& a4 k2 Y% c3 M
8 ?3 v9 k& ]4 s
;;
如果所得的信任度满足条件,则进行交易6 d/ q4 Y2 V1 l" Y8 r
' Q/ n$ _0 o0 Z4 ]: \2 \
[
) N1 V" J! G# n' C1 D* I& C. m: Z

  r9 P  v$ X" S2 V2 X0 z2 u2 jrt random 360
1 `5 q% c2 |7 ^+ b0 M$ H. G

; h$ a5 W# e0 b9 H5 ?' Z( Lfd 1
6 i# I: z& I; G; O3 B

& A0 f. r% f6 R" {. m2 e- f]

4 n; ]/ @) z, ?$ x) f) A. `5 b% [8 M5 R9 o- ^8 _
end

) T  R2 g0 u9 T( g9 j+ ~+ c. |9 V  \  g) _
to do-trust
  g% J4 K% T  q$ c- J- Q' M' Zset trust-ok False
9 _- W% \4 c( L% K1 R0 H9 k
: \6 [8 O' h+ t1 y) L

( c8 b" a) S& E1 rlet max-trade-times 0
5 [7 G& S* n; X! Q3 f$ E) L, }3 nforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
1 J& V$ G, ~1 g/ O+ llet max-trade-money 0) `2 x) w9 G: b, e7 Q3 i
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]% y$ C5 R$ w1 @" e6 @2 G+ x0 T8 ~
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
5 g+ x+ J- F6 a5 S) J+ x0 R) l* D! [) K, P$ }" b1 Y
3 I5 B# K7 K4 w8 a9 u
get-global-proportion# T0 x8 c4 o3 f+ a! }
let trust-value
7 l2 Z" }2 c5 y. Q! b, Jlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

" Q1 x9 v$ N' u+ q3 e5 B+ oif(trust-value > trade-trust-value)" v% l& f1 w1 B" e* Q" u
[set trust-ok true]0 }! m5 ?$ z# a% L5 a- k: ]3 ]. m& g
end
$ V6 @1 L- m% ?7 v) f; Y# \. F: K/ M! A# V
to get-global-proportion
/ I" ^; [& G$ m+ M7 \ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)* @4 E  \) Q! K" h7 i. w
[set global-proportion 0]9 I/ C' y  }$ A$ L7 ~2 b' g
[let i 0
7 N2 z4 l8 B# ?) h/ U: B7 nlet sum-money 0
6 `2 V9 ^* U! ^9 S# Uwhile[ i < people]( ^; p1 [% Q5 [1 ~. ^. b& k
[/ G) v: ]( A1 W) u$ |
if( length (item i
# y8 W1 s: s+ U  P[trade-record-all] of customer) > 3 )
& F+ \9 h- U) e+ o2 z
[
* j+ B# j/ {* p3 p6 u' Pset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
3 f2 K  G9 g- e1 w; ], _+ c]0 M' u9 I4 r3 J9 V0 X! k
]
, N- k0 b! R. _: D, Dlet j 0+ D- k6 F3 z/ X' N- F- }7 s
let note 0$ O; x' K- v; z* O2 L$ ]7 f
while[ j < people]( O2 ?: v- h3 \
[
2 Z+ H$ h+ @$ Wif( length (item i
; }' G/ {* A9 {/ C6 n1 u- |6 G+ h[trade-record-all] of customer) > 3 )

/ b0 H, a, ^1 f, H  o# A6 J* y[
1 Q; q- e: f" k0 J" @$ S* ^' ~ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)# K4 T8 v% a8 q4 a$ ^
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]5 c# j6 W  L* L  E( m
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]9 W2 R7 t4 e' R+ y+ B
]
7 v& F  H2 g; s. n6 P- s]
1 S9 r9 o5 B& J) C; Nset global-proportion note5 D3 c3 y. k" U; h2 L& S
]
5 g5 d/ h7 _) B" j) {end7 b0 m; m1 ~6 N- f( F
5 L5 P- A6 ?4 S8 ~8 v
to do-trade1 t' A7 i7 j9 ^7 P* W
;;
这个过程实际上是给双方作出评价的过程
# J0 v; q% A/ A+ Lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
9 T* L% v6 A& w& [" q: fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
  S. d' x* x$ A: ?: X( zset trade-record-current lput(timer) trade-record-current
+ Q0 o. }3 h6 w;;
评价时间
) r# d2 p9 _8 K! hask myself [* B9 u8 d% i7 q
update-local-reputation
* m8 _2 L' A) S, O8 v& _set trade-record-current lput([local-reputation] of myself) trade-record-current
7 j$ A/ V; u) C' X) s9 g]
& J. j8 Z" T6 Q" d6 A! k7 `set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
' {6 Q' z3 T0 j, ]6 J;;
将此次交易的记录加入到trade-record-one
" x9 o. j: M. @set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)# ~% h% O# ]- U+ f7 |
let note (item 2 trade-record-current )4 a  ^/ i; {' x1 s7 g$ [
set trade-record-current- t* b' J( z) V8 k' W" j# H
(replace-item 2 trade-record-current (item 3 trade-record-current))

1 H5 M) V+ l9 T1 {3 ?6 E) Cset trade-record-current$ [7 V3 f1 x' {1 R' o1 o$ h
(replace-item 3 trade-record-current note)3 m% J7 n* [" O$ P% P: g/ `- b

' I& B4 ?% ~# k% C2 X

1 }0 @; t+ p, i8 S1 d  cask customer [# \( f0 ?4 u  O; P+ m9 R; x+ i$ ?
update-local-reputation
5 Z, b. n; v: F- m' J: vset trade-record-current$ z1 g" A0 Q& F8 w) m3 ~* W$ V
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

, S# I" |$ q# l1 C# J]
: ~* y% C& v& V1 n; W$ o- Z* S- l: m8 B$ l2 d% b2 ^
9 w, X2 f7 ?# P
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
4 Q8 y' h* Y1 R& l* E% Z
, _' C( d. v* P7 ~
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))7 @  D1 I4 \/ r( ?
;;
将此次交易的记录加入到customertrade-record-all
; F' Z  B" g5 i: Q, a5 _0 bend+ E! f5 k, w9 q# p2 N4 h/ }2 S

+ |3 w$ b' D/ v; kto update-local-reputation
  V" A* M, P0 s$ I& E3 H, [set [trade-record-one-len] of myself length [trade-record-one] of myself
4 ?* O5 |( d( G1 ?* }4 p6 j& z& u0 _: T
7 ?! \) W6 `& H. i& I
;;if [trade-record-one-len] of myself > 3
2 U9 Z8 j+ t8 ]; s- Y
update-neighbor-total  C8 x9 Q# d, a3 K# E% `
;;
更新邻居节点的数目,在此进行  I9 u3 G- g, [9 x! O* T, I
let i 3
7 ]! `5 M6 r6 h' I! Alet sum-time 0. K+ b4 C; d. c* `
while[i < [trade-record-one-len] of myself]
& l/ f' l# b# r$ d[0 z9 K3 i( [7 J; G6 o- h
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )! _; Q/ r7 q2 u8 L: E1 ?- M
set i
1 @6 u# o8 l( X/ a( i + 1)

: \. p, x$ Y/ S: Z$ |$ f% i# `, ?]
9 r, h% }+ W: \/ n/ Rlet j 3
0 N7 J3 r6 V0 F- M' x6 U. Hlet sum-money 0
" j% Q8 D1 E: F5 wwhile[j < [trade-record-one-len] of myself]6 B/ q  L; a4 E3 a
[& k2 I3 U( i$ r7 E
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)2 q$ u/ G# b8 h" U0 R* h
set j" w9 E. Z% v6 l$ P3 Q. H
( j + 1)

2 V1 }9 O0 V" I7 i. l5 E% {. h9 q, h]# d2 b" b% g: ^& d+ j) u
let k 3
  q) [7 G! @- z* n1 R" J9 [let power 0
5 |/ _( h# T! Elet local 0& P! G$ ]* X/ `' x
while [k <[trade-record-one-len] of myself]/ N, K& U' c0 @7 X# e
[
/ t4 a/ d9 X; ]3 S2 p! B, L( e& cset local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
6 R- J# u/ g$ v+ N& N0 A+ C: [set k (k + 1)
1 ]& B3 e1 |$ B* _, ]1 M]  X+ ^3 S  y! y
set [local-reputation] of myself (local), |# H' b* a$ ?" v: z" U
end8 o. G9 R$ T! U* d  Q% x( D
$ l/ b8 H. K) I. p0 d4 X
to update-neighbor-total8 s' z" L& _. |5 l/ i+ j$ }% ]

9 E2 s8 ?. e6 ?* a' v. z# k3 sif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]2 q( }+ ?- P3 y; x. O

' [" V; |/ u2 E: D. Y. n- d2 _
- y' [$ \( p" K( H% k+ W
end4 k9 y8 z  M  Y3 g. o6 ~3 Z' w8 K

! T. u/ P. y5 \  [- p$ lto update-credibility-ijl . s! L% W( _1 G3 V
! T. P8 R) t8 L" m* r9 {! w
;;
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。7 X8 u1 O% p7 v9 x# B3 {
let l 04 ?3 c9 d# P0 @; Y' f5 e
while[ l < people ]! ^0 [  W8 G8 i+ D$ E. Q4 p& j# Z
;;
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/ a+ f4 ~5 g0 r
[- z* Y# j: p5 _  m  d* P3 E0 y
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
  m2 H8 [2 i- _if (trade-record-one-j-l-len > 3)
* g, A/ b+ J/ `+ v5 Q$ K& `0 h[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
5 F8 G% S( U8 z9 v7 h, x  w* Q1 wlet i 3
- y: m, k6 `) T$ xlet sum-time 0, _' ~9 n( {8 F, ]
while[i < trade-record-one-len]
  ~0 h2 F3 H* V% d6 V[0 o4 H% i' y5 Y" m2 \2 k/ u. T
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )7 P. }% F2 r1 z( |: a
set i
7 Y0 D3 o8 x0 g. z( i + 1)
& ]6 _0 Q+ Y% B9 U6 _- B
]
/ K! i4 ?8 Q* F2 @' L0 l. C4 Vlet credibility-i-j-l 0- U4 X. C7 ?6 L* M
;;i
评价(jjl的评价)4 F" e& d3 r) A  D1 ?9 T
let j 3& i4 |4 S9 \7 Y  ]
let k 4* S" f# H# S# X0 {* O9 l, {( ]
while[j < trade-record-one-len]
  G3 `8 o5 ^1 T[5 E/ {7 ~$ q& {9 x+ w
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
- h% p" j: Y* m/ B4 U- [+ Z5 @set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
0 I" N7 ?$ L/ {1 J2 b* a8 wset j
4 V# B" f6 e2 z) g" P, Q; b; G: u3 Y( j + 1)

$ j- ]. f7 f) W* l0 ^. p]
6 o& f4 p) ^; u$ V3 Jset [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 ))
1 ^5 }' }# {/ t& u7 A, [- Y
9 ^# L  V5 N& {8 N7 Y' E) n9 @! p

" T6 O( r; [' |  L; e8 q) tlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))8 _  I+ H: w& \( b
;;
及时更新il的评价质量的评价4 F& d- Q5 |; Q4 g' r
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
4 K* o; g" ^! u$ a3 @5 A- u2 oset l (l + 1)
4 {+ E' N: ^7 a( h/ q" o]) W3 B2 p8 k9 M3 Y. B) s
end+ S5 s, _/ U& p. T( K; o/ g
, S# k. t" u+ F+ B# b" G. Y
to update-credibility-list2 o& ?) A3 j- W
let i 0  P4 T# @8 }3 Q2 B2 I% O
while[i < people]( B! {% Z, R8 s  ^
[
& D7 Z4 [6 G9 I2 B% o6 M  Mlet j 0
% \% j0 d, g& @% |$ q0 O# ~- Vlet note 00 p6 `' Y! P* z5 i
let k 02 R. _7 f1 P8 `* [9 y6 _
;;
计作出过评价的邻居节点的数目" v0 y4 L3 U: ~9 \" q  E, l& z. F
while[j < people]# n$ `# _# w# p+ m9 T% ^
[
* t' X: f5 u2 H* Xif (item j( [credibility] of turtle (i + 1)) != -1)4 }3 d- m4 y# U5 t3 W& f! J
;;
判断是否给本turtle的评价质量做出过评价的节点& Z- H( p& d4 I0 o& O1 d7 ^
[set note (note + item j ([credibility]of turtle (i + 1)))% C; C; |7 N# F' t& J
;;*(exp (-(people - 2)))/(people - 2))]
* R8 B7 V' x" q9 V; I8 a& ~
set k (k + 1)1 l( S9 k: O* \
]- k7 E9 n( b' r+ A
set j (j + 1)
; D8 x. _8 i$ d5 X/ @]5 j5 H, Y& B9 Z7 p2 |2 x
set note (note *(exp (- (1 / k)))/ k)( E+ _( R+ c$ f7 |8 F3 B& D7 \
set credibility-list (replace-item i credibility-list note)
* H2 r7 Y0 a- V: n0 _set i (i + 1)9 x2 q7 R$ U( i! p
]
* }, C. s7 Y! B; L, `  P% Mend
3 P" @5 ?. G" L/ e. K# f6 z
4 r7 n0 n9 N" R1 [# A! \# pto update-global-reputation-list, D) l% R: B! Q; k$ q
let j 01 f% S$ ~8 P- X, ?# F" d& K) {- J
while[j < people]
* E, t- t* v3 g( u* j) n2 A+ x' T  w[
% O' ~+ p$ e) J2 L: l% d1 b/ h; X2 olet new 05 d( E/ A% H6 ?! X. P# [: n# w
;;
暂存新的一个全局声誉
; Y( R: Z& R; L0 blet i 0$ C  S) C2 k+ m2 k) K! ^; K
let sum-money 0
( n5 ^' q0 T) r' V% R5 K; slet credibility-money 02 `. s. s& h' b, g- B4 M4 J: T
while [i < people]& {6 y. }, Y9 w' n
[2 f; P! i, S( |( W  ~
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))  x" b$ Y  [' W- H) P# ]6 o: E* W3 g
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))/ x6 A- o  X* A7 x2 c8 ]8 _/ l
set i (i + 1)
7 H! S$ C- u+ r9 @  K. s* a]. e) m( k- p; o% x0 ]* U
let k 0
9 l7 ~* c$ @& H/ g  n) qlet new1 0
  Y4 n  s- F1 B; L, F" L4 @& K* O8 ^while [k < people], w% `+ f0 Y% T% f: B9 z
[1 L0 L2 o' e2 @8 t! n4 E8 d
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)
. E. H8 p3 Y+ Z, J) Kset k (k + 1). X( u! W0 h; L# J" l8 Y
]
( J4 {) K% s2 N; G' ]+ ~6 @set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
4 R) i. G% R# _" a; H8 mset global-reputation-list (replace-item j global-reputation-list new)
# l' J% L  ^6 K; V0 l$ j, p( B6 A5 `set j (j + 1)2 z, @  Q, m0 f, `8 t! M
]' v0 v! ?- X1 ^! m
end
6 r2 I) a: R0 W  Q2 [+ R, d
3 [6 Q4 ^5 X+ c' [
" e5 X8 H2 \' r/ J4 K+ z, G
3 Y& |6 J0 F# H3 ^8 J& {to get-color
: U* p! x5 v- w- ?0 {
6 g3 o; J) ?7 F2 a# z; qset color blue

2 |" `" K: L4 ^5 ~; j2 H5 w5 Yend3 n2 a& ]* Z5 j- w0 a

/ [9 h, b, k1 F0 V$ tto poll-class
! @" u, X/ w; Gend
* I+ \' y7 w* s8 {3 E
3 I1 U* a1 F# I$ c' Yto setup-plot1
" ?1 X1 b; X/ `" M  F1 h
& m. l5 T+ N5 q' o. t% ?4 ~set-current-plot "Trends-of-Local-reputation"
* m; ^* i; r% }8 j# S, Y, m+ m

6 l2 m) ?7 g  |3 _8 A2 xset-plot-x-range 0 xmax

# b& A1 ]' r  U0 p6 T7 ]  F! O
2 |3 Q! M2 O; |9 x" z$ |) Lset-plot-y-range 0.0 ymax

, o3 w/ V# J) N- J% b2 o6 }end
4 w! {$ w$ j6 O, X+ b
' A" W3 ?: D2 Q7 \( Kto setup-plot2
% Y' w% D8 @$ i8 T6 V0 U' k! k2 d( u. f
set-current-plot "Trends-of-global-reputation"
6 m4 e0 p1 o7 f1 p

4 A. q- ?" s& ^' E2 Y3 ]* l1 j, w4 y7 Qset-plot-x-range 0 xmax

8 _! D5 q& y' Z' {+ S/ t6 Y$ T1 E0 k0 p7 Q
set-plot-y-range 0.0 ymax

9 E$ l5 ]; w* Y- T1 \+ jend  }- ?" X+ B3 z. j# L: M% t
  G' m- ~7 R; k( u+ a
to setup-plot32 l+ q& g+ q5 x+ A9 a( ]* p
& m+ Y# z5 i& A$ J/ K' h
set-current-plot "Trends-of-credibility"
, n, ]6 |# F2 B9 @" Y

8 d" t! K2 [* P* G5 ]: Cset-plot-x-range 0 xmax
, z# W- J) [+ e1 C3 [# u8 |1 p

! k$ T' V/ L. eset-plot-y-range 0.0 ymax
. V& d( R: ~& q3 _4 y
end$ }& |5 k' \& u! v
- |8 }, m  t. U, J' c/ e# D6 Z6 R6 Q
to do-plots" h/ [9 X, c& |2 u; `$ B7 `* k" d
set-current-plot "Trends-of-Local-reputation"* u9 [/ X* s0 L4 _  [
set-current-plot-pen "Honest service"
- h8 o5 n/ d/ o+ g; y7 \+ }end
  B; K9 Y; A: ]2 c: K9 I) h/ N6 g9 y7 X; b; C8 F* ^
[ 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.
( w: n  W. m6 n& N% y
/ D4 F" T! p3 k6 o/ c, k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, 2026-4-28 05:51 , Processed in 0.024177 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