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: 14667|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:
& N% s2 K1 E6 Z! ?' Bto do-business 6 D( r  d6 D6 U3 w+ R9 I0 {
rt random 3601 P2 v0 K- M' {/ j& P2 _- f0 J  g
fd 1
' T2 U6 c/ T+ J1 J ifelse(other turtles-here != nobody)[
6 B! R3 r5 j' 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.' y% k; \- M1 K
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
8 b( d7 B* S! u   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer. ?7 X8 \5 ^& ?$ O; T, Q, @
   set [trade-record-one-len] of self length [trade-record-one] of self* b; j/ n7 ^$ l2 \2 Y, ?
   set trade-record-current( list (timer) (random money-upper-limit))
( C- d4 ~% L8 j- g) F0 l; p1 r) T! H1 X- I; r
问题的提示如下:' p( D% g2 v) y

  ~5 s4 K3 U1 @. U0 T) D8 i; Qerror while turtle 50 running OF in procedure DO-BUSINESS
- ]( m  V) b2 x9 a  called by procedure GO: p! r% j1 {2 e) _* B4 g3 t
OF expected input to be a turtle agentset or turtle but got NOBODY instead.0 P4 [9 F1 g% t: [; ?+ F
(halted running of go)
! }* o( G& n4 y3 I& A0 ]; F. O# R+ i6 s6 D3 l
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~~; O6 V4 Z& ^, y/ a
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
1 J- F  T, A( Z" b% Eglobals[
4 h9 U+ }5 B' F9 [xmax
# B/ k3 d3 \. Bymax
) u. I7 Y! N9 x+ Mglobal-reputation-list+ d$ \: ?+ G( s  B) @
) W% w2 L, s# @" a
;;
每一个turtle的全局声誉都存在此LIST- b1 k; R! A  r! a4 P6 G- m/ ]. K
credibility-list% T$ \, w% C+ w0 Q
;;
每一个turtle的评价可信度# a  n! ?2 ?% F. z/ m& [: \- d) S' }; }
honest-service
/ M1 x7 G' I1 T% y' t2 L# n, vunhonest-service
8 W: i& e7 C3 }" _! J& [- loscillation
# N& t' M2 p8 a: irand-dynamic
& p. x- @+ U- X]
( R& p, [- `9 G$ ]* N/ b7 Q! y- z- ?8 g. k4 e
turtles-own[
1 w1 e  I4 Q! ]$ n: T' S1 d+ xtrade-record-all
  [( w' S  j' [0 U4 U  P8 p& z;;a list of lists,
trade-record-one组成
" p+ Q+ p; X1 S. ]6 x  u6 c: w0 j  dtrade-record-one7 \& c, k0 p) M6 o
;;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 y2 M: g+ E* Z+ w6 o0 `4 @
9 \1 D6 {  L  {2 G;;[
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]]
0 {% F" o1 Y0 ptrade-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]
3 ]2 _/ s5 ^- {( j7 G* Q$ m4 ccredibility-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
9 c2 u, n+ q3 X' N" _9 R" ?neighbor-total
& T2 g6 b9 x7 P. g3 @+ [% l. W;;
记录该turtle的邻居节点的数目
0 T- h3 s" @( r6 otrade-time
  [* J3 k0 G# t6 M2 f  I1 W;;
当前发生交易的turtle的交易时间8 D& o: B9 q/ [" {4 o
appraise-give' f' c9 W4 \; i
;;
当前发生交易时给出的评价: T6 v6 a: T  O, V! w% ~7 @
appraise-receive6 P! X3 x2 a. t$ X
;;
当前发生交易时收到的评价7 Z4 R$ Z, A! V# t' p
appraise-time
5 `! i$ F4 {+ ~8 ~* [2 B;;
当前发生交易时的评价时间7 i# J5 A! t$ |9 V, _' [, O, h
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
3 z+ a+ g: |7 @1 f/ F  u7 j( ntrade-times-total
2 [# A1 N  D6 e5 Y;;
与当前turtle的交易总次数
+ J2 h# [& o) L' h# m$ z2 atrade-money-total
% _" @8 M+ j" d+ q;;
与当前turtle的交易总金额- x0 f$ @8 y7 d9 Z- o3 e4 B0 l
local-reputation% b7 V: @. T6 h3 q9 K
global-reputation% T% u, e  X2 l7 y& c3 L; c
credibility2 \! [$ r. c+ Q. ?
;;
评价可信度,每次交易后都需要更新
* ~$ x7 H8 O+ G3 |" I' Pcredibility-all5 k: S' \( I9 w/ n, X! x  N
;;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# b7 V" ~4 F' y  {$ p7 n
, \9 U2 T' F0 ?5 k
;;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
6 O  @4 T' a( kcredibility-one
" g) q3 ~' v0 h;;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
  H0 {; q8 \& E% u5 lglobal-proportion) V7 `3 H1 v4 o" K9 D  J
customer. X1 \+ Q. Y1 P9 W( z, C* s
customer-no$ A9 k: N# t' C
trust-ok
7 ~) i$ A0 j9 strade-record-one-len;;trade-record-one的长度
% u" @) G  |# i. Q# Z7 P% @]2 M7 R6 T2 h. ~& Y: n8 v

! m% [0 f8 f  _. l- W;;setup procedure
0 y3 K1 Y; u5 h8 B& ^5 n- }: }' W3 T/ k5 i
to setup/ q- K+ w( {  G8 q0 U, @

3 x9 p$ D: \* Q/ l7 rca

1 e$ R: X8 t8 A5 O. r+ h3 Y& `6 O7 E  o. D; |+ b" Z. z. n
initialize-settings

* Y6 K( O* \/ s* T; N
1 u- D" ?2 @: ^$ ]2 V% qcrt people [setup-turtles]
9 |3 w9 y" |; Z' ^! h

; G3 h! i' f: D4 h3 ~# Hreset-timer
; G6 r2 T1 F8 ^$ g- w5 E- J

. ]2 a- t4 s% i" f* Y, L' ]poll-class

* b& z+ ~6 c6 j  i. G$ K  y( }% C' n+ C; r( g$ ^1 c7 N7 u5 Y
setup-plots

$ B+ M; u- B( d- ]! b- h$ \8 w
( f6 d% Z" @6 d9 Hdo-plots

  L9 S- a# G. Y: P8 Dend
# }+ _7 s% v: \- m7 `9 U! k2 w1 L5 D% S' o. X
to initialize-settings: L5 l7 L- {5 n' v2 r$ \, q
( g( L7 I2 T; F# H5 C8 K
set global-reputation-list []

* y9 c) [! |& N. I+ M- `8 W( {* y$ [$ o- T& D/ p8 Y
set credibility-list n-values people [0.5]
& D) |* e) s, u8 @7 s+ e+ K
2 b" f7 p! q+ ~3 l" C4 Y& [
set honest-service 0
% M* p6 s& q# _& q' w0 w

. Q: L( K9 @4 f5 yset unhonest-service 0

5 V( x3 I# r; k' G; n# M' X' t  u/ u  X# X" n6 m
set oscillation 0

! F% e; j# Q6 C2 M$ D7 Y6 t4 H- D
% }' C) J( W, P" t( c3 f9 {set rand-dynamic 0
5 l! s+ b, y# c; P" U
end3 A' I) G' o0 W; Z, ^2 V
) }  {2 [4 U- a, {) J% S
to setup-turtles
: V3 x4 a7 g5 k$ T% Q1 c# h* e' Rset shape "person"
& u' y* a, T" J, zsetxy random-xcor random-ycor! C1 x/ d5 u4 t% l
set trade-record-one []" ~7 n; [  _! w+ t- P. k: i

7 J4 ^3 I( z+ R1 ?8 z, q, j# F5 gset trade-record-all n-values people [(list (? + 1) 0 0)]
0 v& X1 _6 y7 K1 Q
/ [: w2 q, }' d/ Z3 {$ c
set trade-record-current []
  I3 t3 x9 z0 _8 ~+ m0 B/ o4 ^set credibility-receive []& I0 S2 G9 g( o) {' O/ Q1 K
set local-reputation 0.5
( O/ g; d* L4 H. H7 d: nset neighbor-total 0
: r( b! d  z# @" Z; \; I% Wset trade-times-total 0
+ |+ e3 ^4 b7 s2 Aset trade-money-total 0. D6 H; S; o2 S% X; I+ N
set customer nobody
, f; \8 E1 i  R) b# I5 l5 I- `set credibility-all n-values people [creat-credibility]
" ^# j. k, f4 d( a' v4 D1 Q3 fset credibility n-values people [-1]
  }4 c6 h* M/ F+ \; jget-color* @8 X1 ~3 q" t) C4 _
% a' m0 ~' t/ O! a: M1 a2 b
end/ j( d# o; O2 O# }( E

2 r$ G. b$ J; i$ kto-report creat-credibility* Z/ y( c# p% }2 Y- T+ x: @
report n-values people [0.5]
7 S: @; g: ?9 [7 w& f- \end
% ^7 D9 T+ a0 K% \+ e0 i, H
+ m/ L. g8 g( [( k0 gto setup-plots
+ M! x. K0 Z: ^5 w) ?- @# Y! l( B7 h
set xmax 30

# n/ n7 t1 ?7 \5 D) m' Q8 a: b" W+ M, H9 ?, q
set ymax 1.0
! G5 n+ Q% P% O% K2 x& w5 B  s1 s

4 c0 L2 T+ W0 ?; M  F7 Hclear-all-plots
: X; f$ y: U# P( e- K8 |

. ]$ b, O+ X* O. vsetup-plot1
4 c& u1 t) _7 O: |6 L6 t

& M$ g/ H5 d" F' h+ K) P5 ?! ~+ ~setup-plot2
8 m$ e* _! r$ F& m! P
0 t2 `* V6 A/ G2 O
setup-plot3
( U: z8 d, i9 W* b. |1 H
end; r0 O+ x- u1 f

/ u: m4 o8 j2 p4 |% D( K3 u;;run time procedures& p& ]# u, R8 j8 I( C4 D8 ^

9 u& z9 |; W( Q6 Pto go. G# k$ Q; u; a7 v, `) {8 \

7 s6 t' t( r# B3 }, F( P# E) }ask turtles [do-business]

. J) v5 K3 r0 Z7 Tend* w( G3 w7 O, A" t, R

9 Z& a! [5 y  Z( Hto do-business & W) Z" A9 E3 q# J. x

% v2 ~* j0 l+ R. G, r$ \& c' f9 F
rt random 360

6 ?" q3 N6 K) P: A) ]# S1 R+ i- v
$ x8 A, j# |! `! _* z# s& r- i, v7 D+ _fd 1

: B6 B* x! |2 Z- @3 A" Y! p0 {# j( F& D' M; C0 Y
ifelse(other turtles-here != nobody)[
% s/ F0 B  p, e+ I% x& v: T  n
. O% A' H# a* K9 X9 O
set customer one-of other turtles-here

9 _- d  w/ J7 t( e  H
! s, u9 E" Q  q0 i" ?;; set [customer] of customer myself

2 F! y$ X: V- q) j0 o4 t5 r8 `; x/ b' h# Y% B% T
set [trade-record-one] of self item (([who] of customer) - 1)& y5 y( @; Q  G8 R
[trade-record-all]of self
$ Z: H9 M% A/ ?. s;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
2 B1 w2 i2 j8 K
& \7 Z4 H) g$ J+ C5 n$ G' d
set [trade-record-one] of customer item (([who] of self) - 1)
8 b( f" C; ]' r[trade-record-all]of customer

5 M. n* H  ^: G( F" Z0 U
2 A8 h- y: \/ G$ jset [trade-record-one-len] of self length [trade-record-one] of self

0 L0 j2 {& [; W- z8 A6 l! i
! ]; s* @2 Y4 J8 }- Z8 cset trade-record-current( list (timer) (random money-upper-limit))
8 U$ T: _3 g! T' X& D

3 x# B1 l  t+ Y3 ?1 mask self [do-trust]
. V$ Q/ o: F: d# W;;
先求ij的信任度
) Z0 I1 D0 k! c5 u( F
4 s% f, T* T9 K2 A- Yif ([trust-ok] of self): d4 s" \+ a; d8 B7 ^
;;
根据ij的信任度来决定是否与j进行交易[1 d6 {7 }/ h) |
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself6 ~- {5 S) f7 N4 e4 x

" v% e2 b0 M' V9 U- H+ p[
( i! T8 z7 l9 Y$ C2 ^/ o, G

+ i; _/ O& _6 a4 w$ P% b! T! ndo-trade
/ Q1 L' Z& n2 d9 E

9 W' ^! ?0 e, X, u. e' }update-credibility-ijl

  |% c+ S- n2 P& t: v7 l0 ]$ e, Y- F+ ?; n
update-credibility-list
; T6 ]% m( Q4 x

7 g7 J& c6 q# H2 r) f% [& s* Z" F
# `+ Q4 v- {6 @# |0 Q! Mupdate-global-reputation-list
( U; |. n: r! _/ o
/ w) X6 Y# K2 F+ Z
poll-class
# N* t; Q6 M9 i9 r( [4 L
% r3 L8 J$ J. `$ Z, Q( X
get-color
3 U: h1 o* t, X- m

9 G0 M' G: S1 }) i+ I: w]]
) W& z6 ~3 J; o2 ?
. K/ Z5 {6 b4 p( f/ m/ R;;
如果所得的信任度满足条件,则进行交易
# `* ^3 z; @  S( |) O
2 A  L  e7 \, \' v* q9 D2 x0 Q[
' O5 N7 A- d! M+ A! Q
5 [7 ?% V1 H$ ?2 E
rt random 360

- k. h* u5 q! T9 o+ f
0 s. Y4 C! }; d& a( Tfd 1

3 L: d/ I8 ]2 C( T
" ]5 G8 {$ n" V! f$ R; S]

- F  t5 @* E5 k: d) C; R3 P" K* ~: \5 w' V% T5 m4 X
end
, l& Y1 q5 W$ E; o1 L

1 T/ g2 Q& D& t4 B; N# Qto do-trust : J. i7 X( e4 `$ g6 I* H
set trust-ok False& c- b1 z! h3 O# [- w& J

1 y0 S# q& w% @8 D& C7 F) p

  P( ~0 @1 }3 ~. M7 Y7 o' ?let max-trade-times 0% j+ d8 x) ?7 c; ~0 m
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
) h/ x7 f0 ^& ]+ s  x0 u" rlet max-trade-money 0
8 `; P5 v6 o- L  iforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
; M/ \) F% f$ N- }  f' Llet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
. [4 B, G" _# N2 c
: z- O' w, p* @: G
0 l! ^, S* P5 x/ [0 f
get-global-proportion
$ `( b" J: G. T: ilet trust-value* Z  n4 S: h0 h2 q' y
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 f# w4 }( M6 u  X
if(trust-value > trade-trust-value)- I$ z+ i% F* L4 J( G: q
[set trust-ok true]
6 J- E& n7 u! d3 b2 w: Eend
3 m+ x: m8 R# `9 Z- r5 ?
1 b1 r- V: a3 `+ @- F$ n- _to get-global-proportion
* c% A9 R- g; j( F, h. z7 Kifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)% q# K9 S+ U6 w0 o
[set global-proportion 0]
" y2 m; t: h8 [1 `1 P7 X; v[let i 0- V/ b& R; U9 d& A. b- l
let sum-money 0- y" ]" N7 o1 M
while[ i < people]. X9 T/ Q0 W2 Y7 l
[
' o" W& ]: `# t+ zif( length (item i% v( m- e. U2 S0 h# _
[trade-record-all] of customer) > 3 )

; u. B8 l, k* y( ]' V, W/ T# G[' K0 _& V. U, u$ x1 K7 T; x
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))9 z6 E6 t. ~* k$ N6 E
]8 D/ v: v( R5 `8 D; F4 e
]2 H, `; k5 t) y! ~2 d1 Q
let j 0
& l+ H  r  R: ^5 i6 Z& S5 t9 ulet note 0+ Y( X3 A. c7 A+ ^' L; S
while[ j < people]- q1 B2 B8 r; J9 y
[
( n7 B( H6 z7 G% z1 kif( length (item i8 d1 G0 g$ z( E( ^
[trade-record-all] of customer) > 3 )

5 \1 S" s5 u3 d( M" s6 {9 V[! t# j' X2 v# }; s
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
% j" }- _4 ?- P% _1 [[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]5 \$ ~4 i# A0 S* R# `- i2 M' q' R
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
0 j. @9 [" [' y! b& A]  a; U; _$ U* V, E. N
]' P4 H: |8 M5 `1 S& X
set global-proportion note
7 W- a; r! }5 @8 i+ T5 a. a]
1 W; p  \9 p% R  i$ ]end% t- E' Q/ _8 x! }  a' |
% o3 u, ^1 ]6 h8 ?2 ?
to do-trade( t# p2 V2 u4 f" {5 u
;;
这个过程实际上是给双方作出评价的过程
# o4 y9 {0 t! H, }set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
# S6 _; K0 M; x& `% lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
: V! w5 [; s$ P# V( R- O4 m1 kset trade-record-current lput(timer) trade-record-current( K% a! K. F$ Z) ~; `) |# X5 x
;;
评价时间' m0 D- y& K- y; c
ask myself [
: t) W- h$ @% h; G4 F1 N/ v& eupdate-local-reputation
& u# z/ Q+ [# N, sset trade-record-current lput([local-reputation] of myself) trade-record-current
+ J1 q5 D, p. _  T* Z/ I3 C]
% y$ z" y$ D' W$ Y( z8 h  ]set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself' X( T. l$ M  K4 g5 a
;;
将此次交易的记录加入到trade-record-one
. i, o0 j, J' s5 s; Kset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
$ D+ C! {9 ?, blet note (item 2 trade-record-current )
6 Q$ g& a" U; [+ p$ f1 R( Fset trade-record-current
3 J5 C/ Q! W! f5 W+ {* M(replace-item 2 trade-record-current (item 3 trade-record-current))
& C/ g) W! c- b: O7 {
set trade-record-current6 b, P( M. Q6 F8 h* z
(replace-item 3 trade-record-current note)( n! S3 y2 `* G: n& G
4 j" I3 n9 I# C0 W4 m1 f7 g' ?

& h* E7 O1 P, f" G. ^8 ?" Fask customer [
! p& \# H3 g% W& @* F: s. A9 d) E# yupdate-local-reputation
6 k) O8 o( S' j9 F  D5 P5 Gset trade-record-current
' K1 p) f" g6 W! M/ x) G(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

$ [* w3 E; b  |' u, `]
. W' K9 C  X8 `6 ]
% y" v0 s6 W8 U7 {2 d) ^

! s- @4 S% r2 ]6 [set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
% x4 ]4 e2 \+ Y

, c& u- l; b) v  a) R3 Z( U( oset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
, a% R4 r7 H  e. S;;
将此次交易的记录加入到customertrade-record-all: L' h3 t8 k/ b1 D: S* ]. v/ u$ r  B
end
5 X; h. K, e2 ]! e8 U  w: ~6 F* W. U/ Q9 F) \0 k. _
to update-local-reputation9 v: ?+ t1 S% P2 J. X' X
set [trade-record-one-len] of myself length [trade-record-one] of myself/ e' Y( p; x  E6 U$ h2 {
( j# L8 w6 }0 A3 T
/ Q8 V* e4 i% E. Z9 v+ E
;;if [trade-record-one-len] of myself > 3

' ^- T4 S* p# O( ]1 r2 W( [& x% @update-neighbor-total
( e0 i4 t% @& m& K;;
更新邻居节点的数目,在此进行
6 K# E1 D4 r4 Y! l: nlet i 3
# f, N6 @9 U8 Plet sum-time 0
# _/ a" z5 {+ k' F# Y1 p7 Cwhile[i < [trade-record-one-len] of myself]1 b  f+ I$ ?" X0 ~+ I
[8 C  H- ~/ K$ N0 X" j0 x
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )$ b. t, f/ i5 u' B4 w3 R+ O: T0 B
set i% w6 Y3 U  A+ V4 |" V* ~4 k$ U
( i + 1)
" v8 g3 r: y5 `/ T- \
]
. t. C& u2 R" plet j 34 d5 w" H* w, T) X
let sum-money 0
* A" Y0 i1 Q3 t' Wwhile[j < [trade-record-one-len] of myself]
+ G1 ^5 m7 l9 O/ E3 I1 A* x& K[8 F+ m2 s2 j8 d+ l9 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)
, ?  E! c- ~% Z" n' b3 F2 Nset j
6 n9 F$ b; X- }7 z( j + 1)

" N  Q# Q- {7 M  @$ r]
! P7 H/ O9 K' h0 F- U7 \, j3 ~let k 3) X$ b+ V+ y* \
let power 0+ n1 A* f* G$ P/ y
let local 0& g1 [2 ^  B  D
while [k <[trade-record-one-len] of myself]6 G( ?$ n- u! }( x5 ^$ P: B
[0 H7 C! T; w( _. x
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)
' r% ~! G( X1 g' B/ N. Y% }) [9 sset k (k + 1)4 }9 ^$ U9 d+ s1 ^. S
]
6 D; a& O; R2 v5 E/ Hset [local-reputation] of myself (local)/ d' o/ v7 O8 R1 R5 z
end' d& E& G1 m% _6 L6 ~5 m

) `# |( E* @( K. Eto update-neighbor-total* Y/ L/ A9 m3 t  C

, K9 y# u. T# kif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
$ f3 Y! X/ |* L: R$ f  e
' c6 L1 m+ }" G3 E2 e! Y5 p
) n: g- A* q" t. b9 g
end/ @8 g1 M5 a2 ?7 T0 e

& s! ?7 {0 g$ u& L; ]to update-credibility-ijl & {3 e8 a7 I' H

$ l- \! I$ l" E+ e7 _9 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。0 z2 W- }8 u, A! G9 t. E& x- c
let l 0
" X( g* }& Z' C4 Ywhile[ l < people ]& K5 u6 V3 V# S$ R4 r
;;
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
/ x# t; R9 R6 y- o1 J$ P+ F[
. _, Y; h& H4 n! O$ blet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
0 D4 }/ ?1 B, i' eif (trade-record-one-j-l-len > 3)
$ _4 [" `2 g* a- A: }1 [[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
* p* y7 X8 f* B; L$ F" _let i 3
# M: ^( R9 Z1 q" B2 xlet sum-time 0
6 G; \8 j& z( V' A* {" hwhile[i < trade-record-one-len]
2 t% a+ E/ s! Z7 E! |[
- {1 s9 _. `, N" Nset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
' U, Z4 h3 m9 l! h. f* c+ n/ a  pset i
; E0 _! @, M& ]! ]( ]4 Q( R- s( i + 1)
( A' w# B& V! _, V# c
]- e* E. |/ K# ~2 r: G
let credibility-i-j-l 0# K! z5 d+ E8 o' v
;;i
评价(jjl的评价)
$ U8 ?' u' [: x, o& g7 T# @let j 3
! q) t) P. q' b6 ]let k 4* s: o" C+ p; a
while[j < trade-record-one-len]7 |, J! N/ U: i
[: T; u' ^. l) ~9 a+ c
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  k3 m! v  x4 x' b8 a. ^, D: ]
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)
( w& t& c) P: x2 Y/ U; q! [set j6 l! ?/ m, F! \' ]6 ^2 m' x5 }
( j + 1)
8 Q7 \( k  G& Q8 v: B' t1 p
]
. m" F  E: a) ~  \8 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 ))5 h* f. a/ F) z& p' h, B( w7 W

7 \& p3 ^+ y, h. G$ j
" \5 ~4 @( p: {+ Q5 `
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))0 t* ^0 s0 N: S4 p* }
;;
及时更新il的评价质量的评价
. x2 x" v) L) Y9 jset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]4 i4 _, t7 A( P" A" I: H- r, T- |: n3 P
set l (l + 1)( V  z8 ^# s$ g6 n7 C1 Q
]9 z1 P/ Q0 i  ]
end9 O2 Z; [4 k- O7 g$ @& p7 W

7 G9 f' {. t2 U+ pto update-credibility-list+ @8 ^- a8 j9 Z6 `! O
let i 0
. Y/ a4 A1 S3 `+ w# Q& ]while[i < people]
9 H4 I& Y! \$ b9 S0 k[% a8 U% e, R+ e# ?2 l
let j 07 q6 Y- \; C1 g$ i6 b& M7 q3 A
let note 0# r$ V, w' J+ P
let k 0
5 _. Q+ N5 L# _) j;;
计作出过评价的邻居节点的数目0 F) `1 B: ?/ u8 {) j9 t' k* z
while[j < people]
7 ~( W0 _' t& V) h  H[
; ?( ?! Z- b5 I* Q! `5 T6 pif (item j( [credibility] of turtle (i + 1)) != -1)  G$ l! _. `3 U; _- Q4 \$ E
;;
判断是否给本turtle的评价质量做出过评价的节点2 g, T; L* _5 _0 I8 P3 s6 T* X
[set note (note + item j ([credibility]of turtle (i + 1)))
3 G6 o' G" S. Y% z: R" {3 o;;*(exp (-(people - 2)))/(people - 2))]
% V( W8 `8 Z, ]0 h5 f
set k (k + 1); ~4 W6 [9 q- {' W- f$ H( }( d( V
]
+ F# U6 Y# G7 e% n/ K% Pset j (j + 1)' T& S: B1 c/ x# K8 g# M" @
]
  q8 I2 J& {; u8 Yset note (note *(exp (- (1 / k)))/ k)
2 t& y3 V3 r3 Y6 o0 Hset credibility-list (replace-item i credibility-list note)) H. k% L9 J; Y: u$ Q, X' d3 q6 e
set i (i + 1)4 ]# v  t5 L+ R2 [# \) R
]  J+ [5 S% p& \4 E
end
5 k- A! u2 ^- ?6 ~
$ ^+ w) J' x: u7 Wto update-global-reputation-list
0 s/ E7 f* N! slet j 0! x* A/ G+ r1 _
while[j < people]+ ?3 r, b% d6 E2 h& n! Y0 i( t) }
[
% ~# Z$ b  c* {4 U* ?) a; Clet new 0# O" X( \$ N2 \9 L) p
;;
暂存新的一个全局声誉: P) B0 L8 P& ]" b% R6 ]+ [0 y
let i 0! _: [, J0 g3 |3 b; B: l8 a
let sum-money 0
* v$ T6 k9 U! G* nlet credibility-money 0. z5 E0 U9 G1 f( @6 f
while [i < people]; c) N% W- d; ^5 M/ p# _6 }, W5 M
[
1 d- R! ]& c2 N7 u9 M2 F; m2 vset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))8 H9 P! P; [: v
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) r$ z6 s9 ?3 }8 J
set i (i + 1)
+ `% Z# y! W- m' ]" E( y; N' G+ G- \]$ ^. b  w  r' \* F( Y
let k 0$ ~0 }3 s# {! M4 |# P
let new1 0
0 o% ^' b6 E- q. @& Qwhile [k < people]0 {( B/ i$ ?  k, R6 f2 }
[
$ u- A/ F! a- ~$ z0 Eset 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)
: b% U4 z, A: [3 U5 Uset k (k + 1)
* y$ w3 o6 [- ~4 J3 ?& _]9 ^- A. ]( u* `; @9 `
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) : `$ u- n- W  J  h0 Z5 @
set global-reputation-list (replace-item j global-reputation-list new)
$ ^8 x3 k8 P- i6 O1 B5 T* `set j (j + 1)
; k, n1 H/ `2 l" m% R1 n]
1 b+ n" T0 J& x6 H- m% h/ yend5 L, E2 g! E5 d& J2 ]
, }. z5 I0 L- O

' \1 O5 V( m% W2 _+ N
, l" c( N# P7 a2 U6 P- vto get-color1 g% E# y0 ]  h
$ H) t1 j, e8 A) n! @) j3 a3 H9 b
set color blue

5 }% i8 ^" T  wend" Y; b6 a0 j  |$ N% z5 i+ R

, y5 |% _% n- Tto poll-class
* i+ V; p7 c" H% Send
8 \- c0 c0 e5 [5 K7 p& j
4 d% |* L5 b$ i1 F5 [to setup-plot1
8 Z. M$ D# Z2 |
$ A2 o- ]- V$ w( M6 C( ~3 @1 gset-current-plot "Trends-of-Local-reputation"

! ~4 i9 j( t/ o" x. u: ^2 D" y) I5 i# b
set-plot-x-range 0 xmax

6 Q$ d1 V+ I- i2 O) h* d/ B1 C( A% t8 S2 e1 Y: u4 l
set-plot-y-range 0.0 ymax

* x' ?/ Z/ G4 o, dend2 e, Q; ~3 z5 D5 E! F6 A

) F9 P  J# S6 B) j8 @) ito setup-plot2- ]) N$ v7 S: `. ?+ |
5 e# M! w: j# Q( \
set-current-plot "Trends-of-global-reputation"

( |  R, D' B, I0 z5 U- P4 H9 r( a
* b/ M, w6 L) j( G% r, Fset-plot-x-range 0 xmax
: s* Y. m- y' |$ i+ V6 k
2 i6 O) S; h1 M3 Z
set-plot-y-range 0.0 ymax
! U0 n3 u: M+ c9 c( x" g
end
3 l( Z# {  E& H
0 @/ g" b7 C$ r8 k& cto setup-plot3+ g0 U/ w: F7 y. a1 w  Y6 S3 d
2 R/ `5 ]$ V0 S  o7 r
set-current-plot "Trends-of-credibility"

4 `6 ^6 ?; M8 Z2 Z) e
; Q: [# |+ ]. F6 q' T* c: e) wset-plot-x-range 0 xmax
4 J. P3 O- n+ D+ j; `
# p7 k6 _3 A3 M6 ?* o
set-plot-y-range 0.0 ymax
2 E. ?3 B: d6 R: @
end+ B' s, s5 I' A: ~" b

* D$ T1 A2 y0 k* uto do-plots
& Y7 h6 N  D" e, w1 a6 L7 d" e5 sset-current-plot "Trends-of-Local-reputation"
1 {7 K6 C" O' g5 _. W  f+ Iset-current-plot-pen "Honest service"# |  t. m; f# m  T, d" y
end1 H/ r- z; @4 T4 W. U
* d! O- w/ [: z, 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.
3 m: u8 Q% \/ X' j) |# ?" ^/ {: e: S5 F3 {9 c& 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, 2026-5-16 12:01 , Processed in 0.024940 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