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: 12713|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:2 @0 M+ J+ e8 B* M5 [
to do-business 9 Z8 e1 K+ U- Q
rt random 360
; m8 D7 z! b. g/ @7 M6 x/ e6 ` fd 11 [6 k2 I& E, t9 P9 R; d: y8 m
ifelse(other turtles-here != nobody)[
: |1 h. C; J: V6 `   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.- j- L- P; c& k* V  b- z) k
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
% k. w) ]: D: i9 ]1 q( R   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer: y& W( a  E& Q6 T. U8 H$ W7 S+ M& y
   set [trade-record-one-len] of self length [trade-record-one] of self' O- c' G& T2 G+ d( L
   set trade-record-current( list (timer) (random money-upper-limit))
) U; ~& p6 g6 F2 ]8 M4 w- d6 n
! f$ k4 v# n' j9 ?问题的提示如下:
, s  y  Q1 Z& p/ c& k. C0 L2 G) I: g7 o  a4 b% E1 A0 D" ^7 `) \
error while turtle 50 running OF in procedure DO-BUSINESS1 b- \. M# k# y- f8 m
  called by procedure GO
% d6 k& u# b& G3 G/ OOF expected input to be a turtle agentset or turtle but got NOBODY instead.' B! ~. a! A& R1 u3 E4 l& T+ s
(halted running of go)
3 {+ J! s3 |- p/ c0 f0 i# p* B: |9 k) s3 s: s+ i' a- 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~~- M/ K5 O1 L, g  U
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
" d( O  k3 L: x3 o& P2 @globals[
, c! J  N; ]- a3 d4 Dxmax. c' G2 o% s% |- Y1 E5 H
ymax8 n0 I6 R/ Y5 }! Y
global-reputation-list% M$ ?. {1 ~" I
, |. Q2 A/ ^0 J' s
;;
每一个turtle的全局声誉都存在此LIST
' s4 w& _$ Y* n4 d* F: ~- Dcredibility-list
$ K7 b8 r* W: C2 X2 l;;
每一个turtle的评价可信度# ~3 m7 l, }7 Q; m, \
honest-service9 F0 e* V& I8 U, ]' `; D
unhonest-service
% b8 `9 |) n" d9 z! ~( Xoscillation
7 {4 C. g  A+ Vrand-dynamic1 \% z6 c0 j' N" w3 S3 E/ d# y
]
& P. q* j3 J: S9 g4 S$ Q0 O$ z$ c3 }. I2 x1 ?$ u- ~3 o
turtles-own[
3 h( {* N0 q, Z0 k0 Z" n# Mtrade-record-all
8 }% q8 W: O" a: q;;a list of lists,
trade-record-one组成
5 g& q0 B! _" {/ y0 w9 `  _trade-record-one7 J; p9 I3 S8 ]
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
5 Z- C2 p. Q+ T9 i# v& M1 S( k8 \9 s
;;[
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]]
% P6 F1 b3 w1 htrade-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]
4 Z2 J( `) \+ l8 ?. k( G! Kcredibility-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+ y8 F: E4 T. H! r! Z8 c9 z5 k& }: D
neighbor-total
7 e9 v2 m8 j# V+ ?;;
记录该turtle的邻居节点的数目4 N# u; w2 X+ ^5 z+ e" n8 }
trade-time+ D; R, r( G4 k, |! Z! t
;;
当前发生交易的turtle的交易时间
- B/ |' v* J9 t! R# Rappraise-give
4 g1 |" u" A4 c3 k8 A;;
当前发生交易时给出的评价  o! a$ m) f  i( E$ N
appraise-receive
0 I5 p" L: ?, e& s;;
当前发生交易时收到的评价
1 W0 \+ c" F: R5 U6 Z( G" Y9 Zappraise-time0 b3 }: b4 l& x% }
;;
当前发生交易时的评价时间. T- ^5 V- t& f+ S0 v' o0 W7 I
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
+ B" _* G% t# V0 O9 Z3 @trade-times-total% p6 }+ W1 L: ?6 z# v7 e2 j
;;
与当前turtle的交易总次数* @  c+ y* D5 y+ d
trade-money-total& ?! H2 s2 V+ r8 z. @# ^
;;
与当前turtle的交易总金额' v5 `) U) u- ]2 T
local-reputation; n+ ?$ u3 N; K3 H6 u: @
global-reputation
% Q& U. {2 Q$ M8 x1 d* m  Ucredibility
0 m. o( x  O3 w2 z8 V5 p( p0 t. l2 o( T;;
评价可信度,每次交易后都需要更新
9 w" ^5 `, j5 A8 O; l. B/ ~: Bcredibility-all
+ R8 Y1 n# a! @6 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
1 n# l9 k5 l: J2 x9 G
. R" _7 L6 I1 G7 V9 W/ I;;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/ Q. m" V8 C9 i: ~. ?7 N
credibility-one
+ ?) l8 T6 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people3 Q( g. j5 w& U( r% o5 U, D
global-proportion
! a0 A) ~7 \+ E# Ocustomer6 p& r6 g- C6 L& F" C. N
customer-no% B3 C8 Z; U3 F" W  A: v# n6 b( `
trust-ok
/ L& ~6 c+ v  l, m- X2 q7 Ltrade-record-one-len;;trade-record-one的长度9 i4 R0 }( k* G0 p5 v' q, z. F
], Z% m/ \  @. s8 n$ \2 ]$ I

' g/ ?$ a0 d* e5 ^5 b  J;;setup procedure
$ R8 q% M7 \! y, Z: I
( m7 K5 d, \/ G4 {+ H; v+ i1 S6 J8 }to setup8 y3 O" P+ E0 ]. ~* E1 O

- r# a# [) @& _0 I) gca
. J* n% A1 }, Z) E% }3 p4 ?  k( h- a
/ f; c4 d8 W7 j! I: o  B7 P9 k# z" d0 G4 w
initialize-settings
" U! c% p- M! \) y( ?

  ?8 i) B5 ~- z) o6 d% ^crt people [setup-turtles]

  X4 b6 j% k) W2 g2 N2 @$ H; X  A! C3 b
reset-timer
7 ?0 G! ?! p/ D( P

$ N% L4 d6 A( ^! T, ]poll-class

2 d5 K6 R" l5 Y1 ~6 j7 M3 S: y; d# H+ l" r; {, v" e
setup-plots
( J& t; S3 V% [5 w8 j! k" l0 o$ [& W

- u6 w9 [9 J3 z$ k' Wdo-plots

( M5 F9 D* l" o- f/ jend
" z* c% c8 G4 M- N9 q1 h' I: L
, k, I$ S4 p; A: xto initialize-settings
3 b: n# h2 j; n- L1 l7 ?4 g, D+ O% V  ~0 E! c! j2 W
set global-reputation-list []

# b; ]+ x& o' F& j3 p3 \* E" Z
  f) S$ }) Y% sset credibility-list n-values people [0.5]
) C1 R/ k# T. {
8 P3 g" G& v- q* g2 _% N8 c; N
set honest-service 0

4 _- g0 C. o; J2 y" P/ R1 L( A$ \! W$ ]
8 n8 l1 h  ?0 g" Vset unhonest-service 0
5 x/ V! Z3 D, M, V% R0 h" P

* p: Z4 `' i/ U; Cset oscillation 0
( D3 n6 K& [% X6 e
2 P3 N" E  N. g) x! _/ U
set rand-dynamic 0
, o/ V! _  D* J
end
* t& J3 f! U1 J0 O, b% V# K
: Y) e' \7 S, Yto setup-turtles
& |; {3 b5 V4 |& cset shape "person"7 E6 p# y. u+ O' N
setxy random-xcor random-ycor
9 v" W8 ~; R: r, a' u, kset trade-record-one []" i" h( }3 i% E9 S  V: I

( E' E$ U1 ^' x: G' b9 _8 |set trade-record-all n-values people [(list (? + 1) 0 0)] - b) w' s, F0 [( R8 q0 W& e! t# S

6 B- c- u! v& H. x& Iset trade-record-current []
6 J; R) I% @6 z9 x: O  {4 U; \: qset credibility-receive []
/ [3 A3 F# k# y3 g7 L7 b8 Zset local-reputation 0.5) j! P( s" n0 f( w7 y; n1 A4 K
set neighbor-total 0
- p. _( D1 P6 n) ~  uset trade-times-total 0; t, L% _8 U: C) v
set trade-money-total 0+ o7 Y2 o* O; S5 M
set customer nobody+ K6 n1 t! A, O/ M8 ~: l
set credibility-all n-values people [creat-credibility]$ d4 K7 G, g2 V9 r: ]2 J$ D
set credibility n-values people [-1]7 v2 Y3 e* L2 N" N5 A) [+ T$ m
get-color
9 g- n5 V7 F: Q

2 M9 q! @; k- u% g  w6 l- wend/ C3 O5 }! j+ z: U6 Q  x0 c
1 e, S( V+ S! k
to-report creat-credibility
7 O2 X7 u0 i3 y+ ureport n-values people [0.5]8 C! |* A/ T; a
end- K" m6 _! E& _5 ~4 E% z8 y5 X0 ?
' l7 o, U$ z" N# j% z
to setup-plots
% U6 v: L% H* ^, g. q5 x8 O
6 {) g* Q3 }. L' D( N1 [set xmax 30
  x( ^6 H8 e. C- e) |

9 X4 K+ v$ [4 r  E9 Cset ymax 1.0
  F8 c' r' S: R

3 g, C- W- U6 t* Z# bclear-all-plots
0 o7 a( v* ^; \, c

0 l: d, e+ U1 D' X5 nsetup-plot1

9 L. {2 a* }( w5 L! L8 R% \# j, T  o9 S  H$ Y
setup-plot2
4 |  f3 C  j% \# [
+ R, Y. l* B- O, ?2 N, X) {2 a$ n
setup-plot3

& ^# K1 \" R0 wend
' b( _2 }4 @5 P7 O: ~
2 \* R, f  A* d- t' F1 W;;run time procedures
1 s7 Z. m/ [+ J+ w( H8 a0 A: N0 d8 J. t# [
to go9 @0 ^0 I; w0 k

. j" p* c: G& V6 d' X( [) m* Xask turtles [do-business]
' D. `% }8 j: r! e: j
end
0 `& x- Y8 `. F, U' D. {& i% k  {' Q: s% r) R* H& Z# w
to do-business   I( V  v3 ~( \0 C4 a

# f$ c. C& Z2 z& R; u# O) N8 P9 H7 l- }5 Q, o% h. X
rt random 360

$ N3 C1 G" J: Z- W8 z9 n
4 R" T  Y( @2 c0 P) ifd 1
; u+ I* F! M1 U4 O- z- }
& b! r9 ~) ^( T/ ?4 E* D# V
ifelse(other turtles-here != nobody)[

! n0 Z* p0 X5 |  D% \# C4 r8 b, c* N( T, n2 z
set customer one-of other turtles-here

, N6 r9 `& o: L8 T" x1 B5 I& P0 ^5 J5 D5 X3 e8 C. ?$ `9 l" m2 n
;; set [customer] of customer myself
$ ]& v; d! }) V9 M
5 x4 J3 h& V( D  `1 Q$ u
set [trade-record-one] of self item (([who] of customer) - 1)
: A" x4 g, ~' \8 q5 A8 Z/ L[trade-record-all]of self
; n& _' J( M3 N( e;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
1 P) S  @' p' T/ `4 O

* v3 u# x3 h) d( D5 R# K) Zset [trade-record-one] of customer item (([who] of self) - 1)# ]0 G& {1 q3 B) Z: G& Q
[trade-record-all]of customer
: d+ N! P  i! f+ Y7 K

2 B$ |9 O0 b- {1 ^, m9 Tset [trade-record-one-len] of self length [trade-record-one] of self
7 a1 j: \: o0 }+ Q% g' @: ~* W$ X) B
4 s( ^( r" l! h- z. g
set trade-record-current( list (timer) (random money-upper-limit))

$ S/ z/ O) F# p: `6 m6 }4 b7 k
ask self [do-trust]
5 i9 D8 f3 N% }  l, D8 {  g;;
先求ij的信任度
, W5 T! V5 D- N! _6 t1 g: `! Y- \1 H' d  m, N0 M
if ([trust-ok] of self)
3 R% E: g6 c- \# M$ D;;
根据ij的信任度来决定是否与j进行交易[
- k% t) L# d: A2 Dask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself% J3 [) k+ z6 r* W+ l; A; g

" F5 d8 Y2 r+ G) K[
! u: `, e: X3 r0 a; c- }( W: N

$ Q9 p4 \  Z1 s  @0 v) H* hdo-trade

% ^0 }4 T' o) N: C2 o' V* o
6 q$ `$ |( J) a: bupdate-credibility-ijl
' m1 G0 r0 x5 q* G) {$ l
7 m( ~0 [% u6 ?2 M1 Y+ |9 _9 ^
update-credibility-list2 j7 `+ c# ^1 c( ?  g" _. Q
9 P/ j8 }; i+ \0 G) d/ m
) o) v8 ?# X6 A7 F
update-global-reputation-list

/ w) z4 `) v& O3 f7 T
3 z! V2 U3 b, t3 R. y$ c- Mpoll-class
" u( x! O* ^9 K$ n: O9 p! c+ x- w

8 `' G/ ~+ S* t$ W+ iget-color

8 Q, g' {& h0 s
6 \2 d0 q$ \4 p9 n- }]]
1 S& n! W" k3 G3 n$ i* \- Z8 H- ]9 b8 a
;;
如果所得的信任度满足条件,则进行交易: B# w& {2 s  D4 p: r

" t# J% J. W) P[

4 T% g) I7 F- F; }7 J
$ i: k4 c& S: I' b) r  yrt random 360
! a) l" O. r( V  p( d1 m0 s

/ X$ n1 `8 c' vfd 1

( U9 V3 W8 x) t4 u6 K! Q. G& P- ?+ B! N  p; N+ I/ I/ I
]

$ ?; e' m- x0 G, h7 h# H# p8 M' n% K; \* r5 U
end

6 g8 _& V5 j8 f( E4 w$ i5 v
, T9 q2 A* M5 wto do-trust , }" x; i$ _0 K  F6 Z) y$ y
set trust-ok False+ b4 L6 y; A7 [. K% g3 m6 G; z
- D: k5 j. i* h/ A% p0 t

: ]' ?1 R& s* p: S; clet max-trade-times 0
, N! ^7 c, ]; f+ u& uforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
( e3 _3 H- e4 C+ m6 a0 Q2 l9 F, dlet max-trade-money 0! U% k3 l2 K; s/ `0 K& t
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
& n7 E1 z, C' G$ L- @$ Q5 zlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))! W9 E) v2 ~$ p; E
! x' Y0 R% A: L9 r

' L+ G/ O2 K$ \get-global-proportion, A7 y' e  T8 l- {. L
let trust-value
0 ?) y: [  Q$ _. h! U# qlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

# B/ D& i/ b' G+ zif(trust-value > trade-trust-value)
5 L! E. n2 R/ W" B[set trust-ok true]
2 b. i1 s! C1 q4 D+ j1 w6 [/ z5 fend0 B# n8 L% N$ h+ \8 a5 ^- W( |
* n( `% k/ x' x
to get-global-proportion
, l+ `7 X' H& h. }) M3 k6 Rifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
4 r- v2 A# _/ A- V[set global-proportion 0]# ^" {8 B( C' p6 w$ Q, W
[let i 0
) c/ e3 N+ m- x* O. o1 |7 w1 T% n4 {let sum-money 02 J! a5 C  ~# Q; O3 D& H% N+ w
while[ i < people]
7 I- x' F  A2 y; ^[- {9 M' Z5 u7 C1 r- {
if( length (item i  o  d" G* E; L3 P* t
[trade-record-all] of customer) > 3 )
3 A3 f" ?1 o" ?. m4 o2 U* O  _' N
[# f0 R* x. V- A6 M0 k* J3 H
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
, M$ n0 x9 Z) r1 a0 R. x]# J9 D0 f' _+ P& G, z
], p0 H1 P) u3 s1 Z1 t6 k
let j 0' U" @; Y0 G  h. O
let note 0
# x  M' i# h! ]5 n3 o" t6 j5 {: mwhile[ j < people]& w- C/ m7 G. x) ?+ H, `" Z+ B
[
# }. L: o* H2 {2 vif( length (item i. d0 o3 t3 q; l% c! p
[trade-record-all] of customer) > 3 )

8 l! z7 J2 k" r1 `- A3 Z& W[: Q+ T6 l  k6 a$ Q+ [' K
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
6 P, Q1 x& Y4 U  r6 _[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]/ U1 b' h' H+ ~9 s* J+ b
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
' F0 X1 h0 e$ _/ V8 q]
  E6 v8 v0 w% m# v3 V" V; @]8 E% s) j! U5 M: V: E
set global-proportion note0 l9 @5 i9 z' s" E& K
]- m4 \5 d; Z+ Z2 P: \
end9 n" U( r2 X% ]1 N
6 h6 n& ?0 q7 |8 K/ X* k
to do-trade5 j4 f4 ^5 C9 e2 N
;;
这个过程实际上是给双方作出评价的过程
/ z# p; n  S; g6 ^9 G4 {- hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价' m! x/ @5 i, l' Q5 X! M; Z
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
' C! x" P1 F/ X0 a. ]' V+ U" [set trade-record-current lput(timer) trade-record-current
* `1 S7 B7 t: S4 [& O; a;;
评价时间' U2 g; O( D* ^+ a
ask myself [2 Z6 J. k& }: [4 k+ k  x, P
update-local-reputation! u) L6 h2 e; P# E. B$ E8 ?
set trade-record-current lput([local-reputation] of myself) trade-record-current; u7 E; X8 A6 V5 o% ]
]
9 V/ k" I& @# f: K  Wset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself9 {* ]" L, X- I* A3 ]& b5 S
;;
将此次交易的记录加入到trade-record-one
4 Q8 R9 M; ^1 G$ A5 Y& r' e+ N; }9 gset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
9 Y3 z3 F& }/ p2 jlet note (item 2 trade-record-current )
+ M5 Z: r* {. P( |: o$ Yset trade-record-current$ R! q2 q& A' W/ {
(replace-item 2 trade-record-current (item 3 trade-record-current))
  u# n- C0 r. G
set trade-record-current4 p8 n* k0 V8 x
(replace-item 3 trade-record-current note)
* {# B" X: ]; @, v9 \, H2 v; d- |* E) E( ~

% p# p8 i; S; _9 r2 `8 A, j" gask customer [
( a; ^: j+ G& s3 ^7 Fupdate-local-reputation
6 f: C( U/ d7 K3 }$ d$ `set trade-record-current
  H$ F5 s. S+ c(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

8 u9 e$ L! b7 y0 P7 a4 w, B& Z" m]
3 R& M& v" I: W+ K; X0 K2 W5 d- J; y- q6 l* z
* k8 b+ Y' w; U/ x3 _2 ^
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
  @$ f6 a" ]/ X

: o( ]' ]5 T/ t. h7 Kset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
! i2 w9 ~( b) }. |" y+ w, [  ~;;
将此次交易的记录加入到customertrade-record-all
# B; G8 U+ Y/ i. L8 pend) Y' f6 A" J, H% q: T2 f, j
3 z2 T8 L5 t" W# g8 g
to update-local-reputation9 n$ O6 d" e1 b- h% b, O
set [trade-record-one-len] of myself length [trade-record-one] of myself. h% G1 W- j9 e# X0 k  F6 I) s

1 ]3 x/ q6 |' s' L  d0 A. }% e( C# \
;;if [trade-record-one-len] of myself > 3

9 ^: j6 l: {; N5 ]# cupdate-neighbor-total$ J* b$ A% m$ x6 ]  J
;;
更新邻居节点的数目,在此进行! _9 f2 E+ g4 s2 x! c- M0 E( M
let i 3
. q$ U7 n! w7 p2 alet sum-time 0" b, E" |+ ?9 f7 n- j
while[i < [trade-record-one-len] of myself]/ s4 B2 _- F) n  f
[
- x2 }8 m, \4 v7 J: Zset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ), l3 g8 K* z1 K' ^0 U+ T) k
set i+ D+ h" Q2 `; s
( i + 1)

  ~6 P' y3 E2 m* O) {' Y]% l) r; T( Z' E
let j 3
! X1 g+ c6 w0 p# b! h  ~; ^- r1 r( plet sum-money 0
( P: V3 @+ t% ]1 i" owhile[j < [trade-record-one-len] of myself]% u9 \" F/ a6 `' X6 \9 \  }  c
[
1 z) f, B$ r1 W, gset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)# Y- [* I0 B3 b
set j6 F2 M6 ]# i6 w: x9 z* c5 W
( j + 1)
/ [  x5 _7 A7 o5 Q$ }5 E" M7 I8 G8 l
]
! i( e% g$ {+ w7 t6 n8 K. o2 mlet k 3
$ X9 X  k8 u$ l2 xlet power 0% R! ?! O* n! f2 x4 b
let local 0$ q  K2 s9 c: W+ ?
while [k <[trade-record-one-len] of myself]
% q0 {( P" k& t; C- S[  n" o# e/ b* c. n: s. n2 D% p
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) 1 \$ r* _, A. V- Z4 v* a4 k
set k (k + 1)
1 P$ y, I* l# i' B]
7 ^$ X7 V% [3 b. q: q+ }set [local-reputation] of myself (local)
. Y+ i  [# T4 z4 N( Bend- ?4 b4 W: G& B$ M
* f' u9 p' D# O3 x0 h; H9 @
to update-neighbor-total
/ b$ V/ j" i4 D$ n% s  E! K0 X$ k* g( x4 V
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
! T9 O5 z+ O. v) r
% c8 D- M8 E" E7 L% P4 K

& m: V: ^' c: S" K, D: ]end
" F3 x7 G# `5 ^, ?( h) f1 ?! S$ L! e) E+ C( ?1 F7 O5 T# i
to update-credibility-ijl 6 i2 Y- O2 F' a: ^
* r- f9 O& I$ R7 {* c: A
;;
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。% a/ Y& |* g9 n. L
let l 0* L9 c/ d6 s  A& C
while[ l < people ]
; A6 h! I/ c) M8 x* ~6 @6 D;;
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
% b7 p% i5 e% I5 r5 J% [( A[
5 L% C0 t0 Q0 h7 @2 l% }let trade-record-one-j-l-len length item l ([trade-record-all] of customer)$ p  I  \# {1 V: r. s7 z6 O# N
if (trade-record-one-j-l-len > 3)
1 }& Y/ w1 @& e$ |* R" m[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
& x! Q" ?, E7 plet i 3& W" M4 `$ g& B6 n0 M
let sum-time 0
" Y9 H- ]( \' r% D6 c$ dwhile[i < trade-record-one-len]# i, W9 }8 ]8 y2 K/ ~) h# m
[; ]. k( F- E) ?/ R2 s6 S& g8 o3 K# L5 v
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )3 e! ]! l) M8 |
set i- V9 S' \$ X" J1 v
( i + 1)
! Q4 W! J! |- Q- K/ w" Q
]- {8 i( m* }# q% V$ |
let credibility-i-j-l 0
+ A& g2 B. [( j+ X  Z. Z1 \7 Z;;i
评价(jjl的评价)) \! ~. W2 U% P' I
let j 3
/ l7 a: ~0 U: H' x: w& tlet k 4
: I6 W: v/ s2 N0 R  h9 Mwhile[j < trade-record-one-len]4 w- x% ?0 B4 G! y" I
[
0 Q5 d% ^3 J7 Y; C, t9 fwhile [((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# D1 G: o0 O1 B. z" h
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)& d2 r% e1 {6 p+ m
set j
; x. i+ v# X- P- f8 k( b* n8 i4 w( j + 1)
/ I  X2 H. V1 ^
]* g; R2 O2 R$ t0 u- X
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 ))& S& S3 x+ y! w( ~

! p. E+ j+ c; Q3 j2 t
! d5 h" I+ K  r1 o1 G
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))5 z; r$ T% @2 c- `  L! M5 s0 a+ N
;;
及时更新il的评价质量的评价
; n# P& c4 Q# X! |% sset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]) o* w- c0 p/ B% W
set l (l + 1)
: W) d- a; I4 b' d6 E]2 l- x7 s, \: p$ A
end
' L9 _; U% k5 q& Z
- X0 Q: w! p, u% Nto update-credibility-list9 `2 j! U4 R" o( M) s% u
let i 0
* V" m" y# _- I+ Jwhile[i < people]& E0 T, i4 y0 G) H" p- _) H. i% D
[" V) a. b$ H% M1 U3 W  U
let j 0
0 f4 D0 h, A4 |* {, n: ulet note 04 C7 j5 p. e: x" I3 D9 X
let k 0' I! t+ D+ e0 W: U" F: [
;;
计作出过评价的邻居节点的数目
; Q' U0 c" B0 d1 K! ]while[j < people]
; N2 s! f; A! S; Z[* C  Y9 G6 p( A
if (item j( [credibility] of turtle (i + 1)) != -1)6 [7 r6 A1 d% A# G5 y9 m
;;
判断是否给本turtle的评价质量做出过评价的节点- z0 q8 [5 d" ~8 `( G/ _6 L
[set note (note + item j ([credibility]of turtle (i + 1)))
3 m. c! E1 U  X2 |6 e( R' H; v  R;;*(exp (-(people - 2)))/(people - 2))]
2 f/ Y+ R! k8 i
set k (k + 1)( P# ?+ W. ^" ?" F) b
]
8 q7 g1 s& R. [! gset j (j + 1)
/ Q5 o. @4 T4 s3 f]
* r2 ~6 `2 n& I" [% R% iset note (note *(exp (- (1 / k)))/ k)0 X/ Z& g5 f$ f5 E( b
set credibility-list (replace-item i credibility-list note)# q1 a8 h2 G3 F; M$ q& j
set i (i + 1); N2 ]. r: [, I- Q; L3 k
]
5 i* v+ N' \# f/ V" }end
6 W- q, k( _: Z6 B
( }6 |8 ~3 a6 W- G# l1 ?to update-global-reputation-list$ ^1 S) {5 A( a( c
let j 0
- n; J* C% `6 p# ywhile[j < people]
: v) X3 O  f- f: \$ K/ @% Z[
3 s9 {- |0 z2 Z5 slet new 0
8 G+ o: ]" ~8 D/ b# u$ }0 w;;
暂存新的一个全局声誉
+ S. @( A! g+ k. \; l  H, h0 b- k6 slet i 0" y% U: I" M3 r; w0 U
let sum-money 0
  i; r: u1 {: ~( Q7 Mlet credibility-money 0
  k% b. I) q+ T; Iwhile [i < people]
  D' s$ ^& F5 B* v% b4 C[
5 a( B# M' N" }set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))9 A1 I9 B) H% u2 a+ M/ C
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))( H) i- F* b1 H; x9 M# X+ _0 Z7 b/ Y
set i (i + 1)9 _2 L1 o% w" B# |, F% P5 D! |* U
]5 p- ~' Y) v! k& z# ~1 l# o5 y
let k 0
) a4 ?7 r1 B# |$ ~let new1 0
& x5 S5 L3 U* Jwhile [k < people]
- }; `0 Z, j( r0 M[
8 ]7 |$ f7 H  ]( uset 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)
( v" g6 b4 `% Q+ v- n& F* A$ C0 X# Eset k (k + 1)
! V. x8 }$ A2 W& d4 Y; U]
! Q& a1 ~: T  A6 N6 F0 [set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
0 b# K& h. }* a& {; \" Y$ U6 ~set global-reputation-list (replace-item j global-reputation-list new)! c6 w$ f" x6 Z
set j (j + 1)
0 D5 C4 g6 l0 ~! b: |]6 w/ c& D3 S( O9 d- e( ]% m1 `
end
) I$ T4 d* V* ~  D1 x
. p0 Z0 B$ _7 P7 ^- O, J' ?
" P+ v  ?/ j0 P5 V* R2 }3 J
4 v- @  V4 a" L7 j. T5 k* vto get-color
. r" M8 K" n9 O- y% `- \. a( j) }$ ~  L! J. {2 j+ W
set color blue
1 X9 E( l/ Z; l& ?6 @
end' d  \! D6 g% _& v

, d' g8 i# m  S' Y$ Y7 N; ~to poll-class
& }7 _3 v, z8 m- _6 [# E/ R0 ?end
2 k! e: K0 N! z, T8 \- {3 K. V% a
3 I2 Z/ M/ ?4 Q& ~5 \3 Fto setup-plot1
% d1 u! ^8 O) `; U: ~3 `6 e5 `% K2 C( e) }: T; |" N9 g
set-current-plot "Trends-of-Local-reputation"
  s4 \* M8 Y& j8 R
, V& R" J* H( F( t
set-plot-x-range 0 xmax

) ~" m7 S6 |3 \; \- e5 |4 `- `4 I9 q1 J
set-plot-y-range 0.0 ymax
! ^/ v% p0 j8 g# Z( L; I  u: l
end
, I- A/ L3 Q! l0 \3 H% e* o( e: G' ^2 {% M" F) b4 ]7 |0 i
to setup-plot2& @5 N! O% p6 I+ C$ T% ~) K$ l" ?3 H

( B! `5 _1 W7 d$ Nset-current-plot "Trends-of-global-reputation"

; _8 I& k/ ^5 o) u
4 w) q- q% A. t2 S# Jset-plot-x-range 0 xmax
' P7 h& V2 W! u5 _

0 c+ a- t4 K1 ~: O- }5 x4 uset-plot-y-range 0.0 ymax
- L* o6 q) C! W7 z8 s/ C) o: l$ L; g
end
+ h0 j+ {9 I, y$ j! Z( V. z4 g
, n. v' ^% Q9 dto setup-plot3- Y1 w* L) ~) Q! U; G

2 s9 @( o/ z  F* i4 |: Lset-current-plot "Trends-of-credibility"

. Y1 x9 `2 j5 R0 B7 K$ r" Y$ X$ X, o
set-plot-x-range 0 xmax
5 W6 P0 r. ~% B$ E! L/ f# U* Q
1 r8 r3 O  |' k
set-plot-y-range 0.0 ymax

+ J/ L& i$ @: Y+ o7 ^* aend
8 B  q7 G7 _: c  P# p  C* o! C; F7 K: y1 n& a
to do-plots4 m5 g3 j3 b2 J. w6 N+ b3 n* r
set-current-plot "Trends-of-Local-reputation"2 d2 K: L# V; k6 J
set-current-plot-pen "Honest service"
" \) w/ Z2 L3 gend
0 |; _7 L1 u- K; x* ]4 K+ S- O3 K7 C4 [' {
[ 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.
6 u3 n6 o. e& s& c
" a! f! V' D  C5 v# 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, 2026-3-7 17:52 , Processed in 0.028502 second(s), 18 queries .

Powered by Discuz! X3.4 Licensed

© 2001-2017 Comsenz Inc.

快速回复 返回顶部 返回列表