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: 11175|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:
9 P& Y& g2 P: Q) Cto do-business   B* _8 Z7 w# K: |# S' @
rt random 360
* Z2 ^$ E) r9 S! v2 w fd 1  r: f$ l( @* ?$ a
ifelse(other turtles-here != nobody)[
+ w5 {. p- _  I& |   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 w1 m7 y+ u- }% W. {+ v, J' w
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
: \$ Z! }' C  d( }+ s7 ^! a   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer. c! ^( Q# o4 i; [  R
   set [trade-record-one-len] of self length [trade-record-one] of self
5 z# G6 I5 T- O2 E- I7 p! u   set trade-record-current( list (timer) (random money-upper-limit))6 b/ V' L+ ?+ G- r; x( c
& J% h1 W% @7 o
问题的提示如下:
/ _1 y7 B% `6 `# f
. w7 j* I" `' Zerror while turtle 50 running OF in procedure DO-BUSINESS
' v2 g% i6 j$ v) n& z1 j5 B% z  called by procedure GO
5 c2 v. w& c- q4 Z& Y  e# KOF expected input to be a turtle agentset or turtle but got NOBODY instead.+ v5 }( [4 K  O$ u
(halted running of go)
: q2 j& v2 k6 U$ K) G: }2 j7 u
2 A" ~8 w! H. K* ?2 e8 c0 Q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~~) ?7 r1 h: I2 X/ j$ f( M
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
. K; Y2 x0 N; L* Z& aglobals[1 t$ i$ [8 Y  {2 z" r2 \3 S& ^
xmax' l- b( i) {9 Q- |! M0 g
ymax4 A3 _/ P# x6 d8 G
global-reputation-list2 \, G  l& h& c% G3 n; U& r
, I$ v& \- F+ j+ V3 _, D3 u
;;
每一个turtle的全局声誉都存在此LIST: d9 L9 K3 @1 _4 f; D7 g
credibility-list
" ^' `! k6 g0 F4 N7 n;;
每一个turtle的评价可信度" i; S! J- t: o$ ?  B' X/ e6 R% X  V
honest-service! f: V: ~3 ]/ X
unhonest-service
$ r# Q! K! c* ^7 Woscillation% g5 c- L9 J7 q! I# n& z6 `
rand-dynamic
1 v. Y1 x/ V  Q  }; A]
  A1 u/ P4 J+ k) P* E. G" y7 p2 t7 j# n0 ~
turtles-own[- p4 o. r6 M+ U) v) f$ o
trade-record-all
. z6 A1 r: p) N& x0 X;;a list of lists,
trade-record-one组成
# Y7 [) X1 A3 ^; r( w! f+ Otrade-record-one
& P2 z0 ~3 w# P  c: e( @+ B% q$ z. Z;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录. r6 V: B% I) A. ^) P
% u& @* C( }7 [. ?  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]]
8 s3 r# h$ x, Q% A, 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]% `. P! q2 _1 F0 F' `. U
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; T  b9 m+ a+ Z) R4 \+ E
neighbor-total
0 [1 H- u, |' L/ T1 ~2 C7 m;;
记录该turtle的邻居节点的数目
7 y- I" K/ d8 |  j7 ctrade-time7 R# ?3 S6 U; _0 s2 Z, }
;;
当前发生交易的turtle的交易时间* f1 z+ s+ p5 K
appraise-give" [$ f/ V- x4 M
;;
当前发生交易时给出的评价8 O/ _( W, S2 l7 h) ~. A, J  y/ N
appraise-receive
& R+ s; }. C; D# a. \;;
当前发生交易时收到的评价
7 z/ J, V, F+ L; n7 q, u3 Eappraise-time
8 \' w+ x4 z+ y1 m. \! O$ q;;
当前发生交易时的评价时间7 D! h: W! j0 w, J2 \" I& J0 b7 J
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
. H* n3 {8 w  Ctrade-times-total
/ [+ N+ X$ x+ T! |;;
与当前turtle的交易总次数1 H% f5 k) Q7 d' X2 T! z6 ?' o5 |
trade-money-total
5 r' |9 V! u! f/ e% d/ s# F;;
与当前turtle的交易总金额5 O3 ]& [1 c) a$ u
local-reputation/ G" L6 V' v) j
global-reputation
+ G( }; n: S: i" r6 kcredibility
9 i8 Z5 u( T/ U;;
评价可信度,每次交易后都需要更新7 Y; m8 H. @  L/ D( E% G
credibility-all
7 Z/ I- j2 w# k1 {& _0 r  e4 L;;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
0 R. G" ~# D3 m
: X) X3 r/ g( X7 B! b;;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
$ n- {' i* m4 Y( }9 Y7 Z& Vcredibility-one% ~' t: T1 d. a+ v9 k
;;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) \9 n9 s5 s- f. c0 n. E
global-proportion
2 J+ \: h2 _" x- v8 u' v: L+ }customer% h9 Q  _; `0 E+ L% z
customer-no
. e1 V& H9 H( E: S; f3 R9 z% `trust-ok, V4 K% P0 [/ D
trade-record-one-len;;trade-record-one的长度
6 r# Z7 Q. b) R  O1 l, I- O]  {' N  W. O9 p8 D. R+ b
; F$ ?, @8 F1 d. }( R9 s/ f' v
;;setup procedure
$ }) q; P; P$ s# b- f( G( M& Q) O6 @0 \1 E' x
to setup; u/ w1 i; B. g/ K

% M5 T2 L9 G! |0 N6 }ca

; k' \# L  R; ?* y* ]  }& b( R/ ~5 t$ m8 C. x- L; }7 z
initialize-settings

+ R: N! K/ @& b7 X! L( ~9 E; g! Q2 y! d9 r$ C+ }
crt people [setup-turtles]
' H: e9 ~8 q5 g1 |7 @" g2 W- y0 {

8 ^: q5 n9 g" }; c* Preset-timer
" G1 Y- s6 ]3 D

9 E% v, Z- p$ C5 i3 W  B7 j3 z0 opoll-class
- n& d! `" {7 A
/ F; g  r  M2 \
setup-plots
: H! }  J2 S0 ^6 p1 k
+ b) B0 l: r. m% l+ w& ~9 o
do-plots
0 P/ b# N$ H2 [- H6 N6 n
end
5 g2 E$ V8 Q# T4 K, j0 R* K; m1 w7 O) D5 n0 D
to initialize-settings" M1 q. V2 I- Z

) y- L4 z* m: G3 C' c1 i1 D; m/ Bset global-reputation-list []

3 F3 P0 i. V- f1 [
" ]; {6 `& G* I4 g8 W/ w4 j3 Dset credibility-list n-values people [0.5]

! h; D+ W) X% W3 M' n! [
) I) t* a7 }; Hset honest-service 0
& g3 Q% B) O- s! z) {5 N% {
* X( k- `5 l1 L1 @
set unhonest-service 0
/ b, ^) m7 w' w0 I* h& B. y

9 z+ l' f+ N- y! }4 Rset oscillation 0
3 M6 @, f$ q- M* I- Q6 g
3 H0 X) m3 ?* i  m
set rand-dynamic 0

4 Z" d9 ^1 @! p( W; fend
4 d  o9 e1 Z: L- `* [2 {
1 p9 M1 J7 J3 E, J5 \* X) Gto setup-turtles
, |: N" s$ D8 D1 Mset shape "person"
9 n- a: U# _" W, b9 n  k4 Qsetxy random-xcor random-ycor
1 T# W- J1 O  Dset trade-record-one []# L9 E4 F% Z! W* h% A& y

3 b2 p7 H( }# J/ ^  B2 A& N' I; _set trade-record-all n-values people [(list (? + 1) 0 0)]
. Q/ m" V  Z, I( }
: G7 x& I6 a' N1 M# H
set trade-record-current []% v, _, J9 @1 H  [! E8 B+ D
set credibility-receive []2 ]6 k* W7 R; W' ]' B# i
set local-reputation 0.5
: x1 w& G- o% s& g( k" xset neighbor-total 0
8 ?1 X8 `. Y+ ~: y/ Eset trade-times-total 0; b: S6 m; {: s  r. ~& [
set trade-money-total 0' _% c9 d0 G, |; N
set customer nobody$ e6 F+ U5 v8 ~- ?
set credibility-all n-values people [creat-credibility]
% G8 J" @5 }) l( G2 Y6 |" Uset credibility n-values people [-1]6 g& d8 Y- r5 k* R& @( p5 ]
get-color
0 n* j" s% ?$ F1 `) d2 ?
' U, `* P1 P* [2 m/ x6 K5 y% D
end
, S! D: \5 H& n$ f3 v, L4 l! c9 @% H8 r
& z1 |7 t, z. X" [9 oto-report creat-credibility
1 w( Z* Y% t. ireport n-values people [0.5]
7 g+ n4 R6 M# p8 q$ d& J2 ?- Uend
2 A1 M6 _1 h+ r
1 W4 d+ A7 q0 q# f. d8 Cto setup-plots. T( z! b9 Z: ]$ F
) P' [9 T+ E+ g7 F
set xmax 30
" `: R. M; T0 D' S! h

+ E! m" t* O- z' I2 a4 c. U! U( B) X! w) uset ymax 1.0

9 e' G; R! d) D8 R! @( i# r/ m7 M% F
6 x) K$ l$ _% a* u0 \$ c; e' Rclear-all-plots
8 R$ H5 Q/ p1 J0 c: C; Q$ {
& \5 U7 \/ _2 I$ ^9 k# {. X
setup-plot1
+ v! X  N1 k9 g: S1 O1 q

/ g# G7 t9 Z0 a- Xsetup-plot2

( s, U0 B  P5 D, R5 e. A& d
# L9 C( d" ?, i' ^setup-plot3
/ b; x4 y- F) p0 V
end
% [1 z' T* i7 x' K  i; h2 i# N: }5 s
;;run time procedures( d3 X$ C" q! i& e
( c9 {# A  P+ T$ [
to go
4 D5 j9 A+ \+ Z- A  m2 D9 \* D& H. n2 q6 N6 Y4 S
ask turtles [do-business]

  ~7 A0 Q) q8 P2 wend
$ U, i+ |, z* l, F) z1 [# `4 J9 [! t' a4 C& E* D) p
to do-business
- o) G+ n. B  Q: j+ n9 k
' W+ q' Q" @, |

5 ?/ {& \' f* I/ X$ R$ x+ _7 Srt random 360

2 ?& I, r( x$ [* K  j7 a
; C! t" m/ P( L* ]  A8 Tfd 1

3 y0 E: |5 U, ?1 ]$ x8 t: [
9 a: N& x& s9 \) p* ?; U* {, jifelse(other turtles-here != nobody)[
- ^+ v1 m& [5 e$ ?
8 P! W/ k2 g9 w, K/ ]
set customer one-of other turtles-here

* O$ d* k  Y  |7 P
# G1 p, X  O+ \9 C0 R: d7 g' ]6 a2 u;; set [customer] of customer myself

; u) f, L' O% {# s+ h1 v! w; k' d6 r4 L: H
set [trade-record-one] of self item (([who] of customer) - 1): \# F/ ?4 q" i! @  G/ H
[trade-record-all]of self3 O: t) [7 @# z" x) X' u
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
1 U' U- \9 _) K6 @) B8 T/ S! [7 q
9 f8 S1 Z1 l! R. d( \
set [trade-record-one] of customer item (([who] of self) - 1)
( L- J: ~+ _2 m3 d[trade-record-all]of customer

& Q" g' e+ k! {# ?# E4 f
8 N; p6 C( g! K0 ]/ H% Yset [trade-record-one-len] of self length [trade-record-one] of self

3 }: J- O1 j/ W  o9 T2 }5 \# G3 ^& ?3 r! K5 ~, p# e. r- M$ l7 Z9 r
set trade-record-current( list (timer) (random money-upper-limit))
, l: V3 g) O& t3 t; ?# f, _1 _$ x
& j6 P- Z+ o, s( \2 ?4 ?9 l3 E
ask self [do-trust]- F! }' j4 ]9 n+ p
;;
先求ij的信任度
* E4 P; O! X1 h8 h" z3 J2 E+ h$ n/ L3 p
if ([trust-ok] of self)3 L) l: E1 `" f. t
;;
根据ij的信任度来决定是否与j进行交易[
. l" h" m. \& V' t* R/ R" G4 Zask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
* X8 }$ k8 x% ^# b( k& c+ ?) f9 a$ E: g. n4 L$ g
[

2 K1 h/ g6 h% V: u/ d1 ?$ c, d/ Y
do-trade

3 Z4 r' F; b3 B* u1 Z$ F
. L/ I7 Z6 n, L8 J* K( Dupdate-credibility-ijl

1 j% U$ a4 [. B- o/ D( k+ q0 z6 b/ N+ s9 f* @
update-credibility-list
0 M7 f) u4 m7 V$ r3 }) j
6 i2 \1 U7 r! _5 n# E6 |8 C
; F# s" a3 h- r* p% J2 v
update-global-reputation-list

- U" l+ h) N8 U0 i0 d8 t8 _# ~+ G* N; @* L3 f) Z( d
poll-class

! |: }5 @: ~! K6 k. U, `* C3 j
* E. R1 H, M9 H( u% V6 q+ tget-color
) M( d1 o( X' ^

4 V: b4 X, v, T! T]]+ Y3 v0 l' Q# Q( W
" R# R4 F0 T2 Z. A+ @* ~
;;
如果所得的信任度满足条件,则进行交易
% k* E  |4 Z& M3 x: b2 X7 n) w7 u# [+ I# ?
[
) b9 A' |3 ^. `2 K8 w3 \

! F; o4 c4 P% q+ n% Grt random 360

5 O0 {$ T  ]5 [" C( g9 d( c$ m& l3 [& T3 w; U. }+ U1 {+ @
fd 1
( N3 J) T- i& n6 n9 C

$ R9 S  }3 t! x( Z7 r% []

% {3 v4 W+ V- Q" M0 X+ A$ t" ]; u5 z6 z( [. a, d/ F) y
end
- a- ], R" T+ E" [9 R

& Z' l: `4 k  f- q7 ~* O# N& J4 |to do-trust 3 v' f3 m$ r: E2 i
set trust-ok False$ V' m2 F$ U0 X, T4 w6 R7 t: z2 H' r
  q/ ~2 b) H) r1 y) S
1 a  j9 [6 M6 W8 Z
let max-trade-times 02 D! F' s' x* w6 |& t/ @* \
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
8 r1 P0 ~6 E+ k( zlet max-trade-money 01 i3 t+ r6 @2 A( M1 }2 ]* g3 A1 x) J
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]3 t8 Q# `+ [1 @+ K6 ^
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))4 Z: U( w+ F, o$ G
1 z* ^4 o/ B7 G
7 d' l) |" ?9 i) \$ J* n
get-global-proportion
" {! {" C7 @, R4 e% s( G- `let trust-value
: ]4 R7 h$ d" K% Ilocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

' o; k2 n2 a0 hif(trust-value > trade-trust-value)
- C% c2 k6 O* G, o! `1 e[set trust-ok true]  C0 [2 f- g5 c! N& n( f1 X! s# H. b
end" U! w) l# F2 }
7 o4 y3 o0 b% c
to get-global-proportion
! _: u0 s+ W: i1 Wifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
$ \) q! t  p: N[set global-proportion 0]
# H. ~0 c  G, J: S1 ?* d$ \[let i 0' D+ \: I3 K3 m5 B% l# e) g! Q; d
let sum-money 0
. E: c+ H. h8 qwhile[ i < people]
; Z, l8 k& R; T$ D[) U* v0 Q8 ?/ O1 T0 d: M4 X9 ~
if( length (item i& ^/ _: ^9 x5 K/ C1 X2 T* X# `" ^: k
[trade-record-all] of customer) > 3 )
5 e7 M* \8 I8 M7 j
[
% M! L! [# x$ oset sum-money (sum-money + item 2(item i [trade-record-all] of myself))7 y) W8 t* Z3 d/ `6 Q7 ~8 |6 Z
]
. Q, V) ]) s% g7 Y9 Q$ R- w]% S5 Q. g  C. P( b% s
let j 0
! L9 u/ j. \' _( ?9 e% ]let note 0
% X  b# {9 K! t9 B5 ?while[ j < people]
# i' c" w; O+ e/ f3 s- Y/ W[
0 B& I2 h7 G& t6 Y  j# e+ {: X( `. ~if( length (item i* I: A% E6 o* W* G( R
[trade-record-all] of customer) > 3 )
: l& |1 E2 |* Z5 I% L
[
; K% m: y6 ~, A. M% q$ J1 ~ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
- k. B% i9 @8 M% b[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
" ?- E2 c7 _: f% o[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]. P  B1 a3 b- G: M
]4 Q. ?2 w" m' J# n* d0 n% H2 o
]
% @6 \. f$ Y! |$ r/ n5 Jset global-proportion note( w5 I' ~9 r' w% m3 @& y
]  S. H/ I$ `1 P% N) J, o- k
end
" D& [- W% u) J7 `) B2 t9 s. H- N0 f3 u) s
to do-trade
9 x; s" c3 g7 m8 V3 Q; l, X! y;;
这个过程实际上是给双方作出评价的过程: d( d& {7 c2 @+ a( P# G  ?* C% ?
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价; \6 S7 W9 g4 Z9 c+ A. l
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
  H  Y7 e4 e" p2 b. s: kset trade-record-current lput(timer) trade-record-current  t* \$ i& f6 y1 V! Y$ C
;;
评价时间6 m. l! {/ v* Y
ask myself [3 K$ n5 R1 H+ }' y! g% s$ \9 }; B6 A& a
update-local-reputation
+ d7 H: `" g# b' U4 mset trade-record-current lput([local-reputation] of myself) trade-record-current" F0 V* U# \( ^, W* ^2 A4 q
]3 a$ G8 d4 O  p0 q
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
# x' @) M! q, h' v# Q) ]+ g;;
将此次交易的记录加入到trade-record-one4 B7 f/ u9 f, h. l+ e
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)( Y( P* |+ `+ d% J* g7 H6 ^
let note (item 2 trade-record-current )
& Y+ `9 {' t; P8 b" e: ~set trade-record-current' }3 X+ [7 w' w8 U$ I/ v7 q
(replace-item 2 trade-record-current (item 3 trade-record-current))
% f7 g; b& g) V% P  \5 E$ S, _
set trade-record-current
: g; ~- [# l' R# F(replace-item 3 trade-record-current note)) i- x/ @  ^2 b# L4 a
8 F# j% L8 s' |
0 H+ q; Q# U8 G, i8 a
ask customer [: J8 u5 M( J: X8 |" Y
update-local-reputation) g1 h. N% P# [( Y" w7 v
set trade-record-current
7 e  v0 v5 H* V(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
. o8 ?* a5 ?( I$ K3 U1 h6 i, H
]
7 T% V$ K$ [( ?! [
5 F' p; |' ?3 J8 I, D' j& ^
) U" v* o2 @; w- @; ?
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
0 w6 I$ [; i  `0 J

0 R: E7 {: z+ l! G. Gset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
# [+ q2 n" I8 L% x. H: N0 r;;
将此次交易的记录加入到customertrade-record-all
% @# t; h! o, R5 o7 p8 s! @) r! Gend( Z4 O2 z- }4 m
0 g8 t0 P6 h6 C1 c9 i2 j
to update-local-reputation, W4 w* \- ?8 v; `  G4 u. o
set [trade-record-one-len] of myself length [trade-record-one] of myself, A( ^6 X8 L+ T. }, j
  i- i) g$ }# d3 R8 K! e( {" Q- |

" |0 J4 C9 Y5 R$ h* I;;if [trade-record-one-len] of myself > 3
- p9 d- e3 k: n6 e' E5 v/ H
update-neighbor-total" v: Y7 n- w. j* f
;;
更新邻居节点的数目,在此进行
: [% P9 c' @3 z; Xlet i 3
" y( M5 w$ `8 `  b* Z$ ulet sum-time 06 U" b/ z# N6 t/ [+ i
while[i < [trade-record-one-len] of myself]2 Q6 h$ e' N' Q( T6 }" Y2 i" f; D
[
# _& ~( w7 [3 Dset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
  z! x- c6 h* O7 A$ I+ d6 v5 _set i
: m5 q) p5 i; s, \* s( i + 1)

. q1 G1 v% v6 h& q& i: A]
6 P4 \3 H0 C( t  R( I4 Y; plet j 30 z" m- Q8 N" R: Z# K, r
let sum-money 0
: \# A9 [# F2 W/ g, n, y" `while[j < [trade-record-one-len] of myself]
4 P* z: d- d0 Y[) x" D1 q% m" }* |' g. 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)
# C0 J& ~' `. ^! |6 W7 _* p& cset j
! W, j$ k" L; M$ H% h( j + 1)

4 D; O  U$ e) Q. `# R( M]" |( [& a' P4 P
let k 3
0 O9 Z9 W0 D# I# Z& K) {) ], Alet power 0
# L+ Q- h1 `) K: C4 U8 x6 s" D9 llet local 0
' @# o3 y/ o+ p4 Mwhile [k <[trade-record-one-len] of myself]
5 u+ _  m0 a' d. O[
0 e5 p) _! U' K9 i$ f+ Qset 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 Y$ z$ @4 M2 {set k (k + 1)( L6 n/ y* T  Z; ~4 G5 x! E  Q* F
]9 w: i) x8 u* J. `% F
set [local-reputation] of myself (local)0 v. c. S( T2 i- w" H0 `6 ^
end
. a* b  }2 ]* b: j
# e7 X, n2 e: V8 M8 zto update-neighbor-total& |  ?2 s' D! O( J

  N4 L; }! o, G: r7 a$ H$ fif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
+ w0 t/ B$ J& |/ @: _
* P) P( [3 p3 w( ^( a" }  ]
  {) ~5 }. d8 l* l/ f. i/ d
end
# X0 p9 K+ _% G) O; \7 G- q) i# F% G: \
to update-credibility-ijl
- q0 J/ e' S% ?2 P2 d& U* J: d+ y- Y7 H% Q* |$ Z2 ^1 i
;;
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。
: ?9 ?7 k* i- ^* O2 ~  F& wlet l 0
+ p2 p9 b+ e6 T# c7 {while[ l < people ]1 F5 Z* x2 v3 u# h3 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
! v- s/ p* E2 W; V+ J  _: C[" t) n6 s0 v; W6 `. m- ?
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
# k. K( m6 H% ~, k# N8 y! m/ p; Zif (trade-record-one-j-l-len > 3)) V# v) U' N' G" w0 ^9 e9 `
[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
0 ~* V) J8 ~% r1 I" Clet i 3
# l5 y6 ~! {1 i2 }! Ulet sum-time 0
+ s1 o* x/ g% s8 P4 {/ pwhile[i < trade-record-one-len]
( G( M$ D7 c/ w& [" Q( g' ?2 V[" X/ g, z. q. P" V0 D8 v* y
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )  D! h* B# |( v  @. Z4 [. A$ l0 R  I
set i4 C  a/ e2 {: g1 \
( i + 1)
2 `5 D7 }9 W6 G! E+ R8 `
]
/ `" A/ w: s+ G- F) D2 \" ]let credibility-i-j-l 0
- L9 [) p  ]$ m4 A$ E4 i;;i
评价(jjl的评价)2 \0 [/ u! c) l, X
let j 3
) k, u7 n7 Y1 t% I" clet k 4! _* i  \! [' _9 U# H
while[j < trade-record-one-len]
& R% V' Z$ A# F9 a[
" c  Z& s: |# y7 S, Owhile [((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' r: p$ }0 s5 q$ V# K6 Z
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)
) H& X1 k- ]' J, zset j
8 ~4 _4 |- r& X: @( j + 1)
  B) |% \' \/ V  Z' c. e$ q8 R0 l8 T
]$ Q+ {; y( t+ H, X9 Z
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 ))
8 z4 c2 j" X0 D) w/ ?8 a' H/ N2 r5 H+ l( G' K. t
7 e9 S* y  g  w; X) ^" |9 K
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
) V' ?% U! L( D# q7 R- g;;
及时更新il的评价质量的评价1 A8 S- @6 a9 K# O6 j
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
2 d% I0 d7 F$ u1 g. tset l (l + 1)
# Z# ~  G. q* A' b7 J. q]
* l0 d2 \! ?& C9 t) [  O/ @end
5 F, I& ^  f% m% R; _* y, u: t3 I) o7 D2 o5 M8 h9 R6 U1 z
to update-credibility-list# D  U) s3 I8 H* ^
let i 0% e7 I6 t6 X* A' l: Y& `
while[i < people]) S1 l; X( K6 z0 P
[! r) n6 K# K* j
let j 0
- Z6 @0 \* l; ^* }let note 02 x. g3 a; I( }# u! e0 x
let k 0  L& c. @7 K3 T
;;
计作出过评价的邻居节点的数目. o+ U  d+ Y2 X# G3 O
while[j < people]# f/ s! v. g% Y) S6 h$ c, u; n9 P
[! O- R' D1 S/ _% p
if (item j( [credibility] of turtle (i + 1)) != -1)
. t& ]1 E3 ?; b8 S8 M- Y1 {;;
判断是否给本turtle的评价质量做出过评价的节点
. |# W" [( `9 V. }[set note (note + item j ([credibility]of turtle (i + 1)))  v9 y; v' q+ R& J: y, I
;;*(exp (-(people - 2)))/(people - 2))]

& r, ~3 c" A: lset k (k + 1)
0 j# w1 n+ ?2 }4 U  n. U2 O]1 Y+ ^# N; [6 S* n1 B: n4 @
set j (j + 1)! i6 x1 L# r4 ?) x! R! y- M6 T( c
]
6 m% w; O* G( E) U: l9 |set note (note *(exp (- (1 / k)))/ k)" z5 }. M% p& s1 u
set credibility-list (replace-item i credibility-list note)
+ ~* I' M2 R. P9 w; Eset i (i + 1)* t' X; z( v, n, A0 N5 t
]0 j6 G$ e' ?2 y5 x- L4 o; K
end
) M* U+ K* k; g
" l# h6 F) S8 c) ^" |0 gto update-global-reputation-list8 K6 _3 [+ ~# D' G3 ~- b6 @4 Y) t
let j 0
& t# @4 j$ ?5 pwhile[j < people]! F9 u9 o$ e" g
[2 z0 c9 W4 v2 y- h0 s: h
let new 0% Y3 l/ S1 r+ U' O! w8 I" M- ?9 e
;;
暂存新的一个全局声誉' D3 M; k9 s7 n. @9 i
let i 0  z0 p9 q7 [% h8 I0 s! U
let sum-money 0$ d4 F) Z( \! p  O
let credibility-money 0
7 {4 @9 t! ^. U2 b3 Lwhile [i < people]
5 E9 n8 r* d& w/ \4 y0 K[
! d. _( d0 T- {set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))2 p% v& ?/ x' h8 X! C$ M% |$ `
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
6 y* O4 ]- W& ~5 S2 Xset i (i + 1); a3 g/ ]5 f) H) m) S( l
]- g  |1 P' F' d1 `5 b& G
let k 0; n; h. r$ \# g
let new1 0
: H1 A, f. ~8 [# K) ^0 Bwhile [k < people]
. F; G4 ~6 p1 o0 }6 U[7 P! N' t7 d: I8 N$ F' ]- c% A
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)
  ?' z; B1 g% M3 tset k (k + 1)' W7 t* D: [* k: ]
]3 B' {8 |) z% O& d) d/ p* O' r
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ! L4 |( ~0 O( C+ Y
set global-reputation-list (replace-item j global-reputation-list new)
& |2 t' M2 j. z& q8 `# }set j (j + 1)0 W3 z# z# r4 w6 V( ^' l7 v4 y
]
/ k4 M+ ~& Y" S: u9 A5 h" Pend
7 p' E+ a6 w. Y" a' r' u& g3 N4 g* E8 C% {8 c; R. V8 P1 G( C

# n) E6 U8 \" n" N- L0 o5 d, O1 U' I
2 o( s" s+ {0 i8 O/ t3 Ato get-color
- J, W2 _  ~* Q+ A; w& ]3 F( h% t+ `! S& h' v
set color blue

1 {3 ^! ?$ T; Z/ ]end4 g, {) U, i" k; w. o0 y
+ E: L% o/ {, Q1 K0 R. R$ B
to poll-class
$ N2 [* a' t4 g4 X0 Bend; i" c5 d* f' B6 e; C4 p
5 Y9 e! e" F% `/ P/ J8 e$ K/ j+ ]
to setup-plot10 w! W2 P3 O$ o
: ^  m9 X+ l" g7 X
set-current-plot "Trends-of-Local-reputation"

% l: t2 r# i4 L0 t1 b4 t: Q2 ?7 n! G, {3 P8 H9 r5 P7 J' U8 Z
set-plot-x-range 0 xmax

! Q* N2 g' C2 E: |' |# z+ m9 B1 X# J; C% j0 N. ]/ }+ }0 Y
set-plot-y-range 0.0 ymax
- s. A, V9 E8 V: d  ~
end* |( m7 r8 n! B$ K

. x- Z  z0 c( qto setup-plot2
' \1 F$ M, U' V' Y( q
7 E. {8 g, O4 iset-current-plot "Trends-of-global-reputation"

$ H1 S+ M! ?. A, e; _/ O$ p. r: G5 U9 Z7 m/ s( W  S9 |1 H( A
set-plot-x-range 0 xmax

8 L7 h4 L1 K$ {- Y% D. ~6 G$ q. C6 v# T; n! f( k7 g1 V# g5 D, [
set-plot-y-range 0.0 ymax
9 {' L: B! P" ^+ _
end" p1 Z5 M/ ?# X# z0 g

: t5 [& c  Q( R0 B; F, A( l. zto setup-plot3) p/ g$ B8 i9 |7 B
; S3 N1 |9 O  b4 K
set-current-plot "Trends-of-credibility"
0 [  Q; h; p4 [7 p% d

+ L% P$ x1 {1 jset-plot-x-range 0 xmax

( y4 A+ y- ?0 r3 P' }9 j! _. \2 M% d* X% s! F9 W( b- V- [& i
set-plot-y-range 0.0 ymax
" _: g2 @- q0 f  p" }9 t
end
0 q. L6 C5 U& o5 C  O
( G% ^: Q+ M$ W& T& kto do-plots
# t5 X2 D* J/ o" ~. }/ W9 r$ eset-current-plot "Trends-of-Local-reputation"
  v4 A$ K7 J2 g/ P2 N7 M$ ^3 p; c, sset-current-plot-pen "Honest service"
* V6 y5 F/ m1 }- gend& @9 R. d% s# ]. V

: V+ `$ s4 y, X8 u( _4 J! W[ 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.
( h( ^5 l- L  Z6 _
# Y6 n, u5 c6 y& k! ~! L) n* B  n) X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, 2026-1-1 16:41 , Processed in 0.030643 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