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: 11346|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:
; n0 A2 ^/ r: X+ H/ Sto do-business
- ~5 F9 [' v( I. i rt random 360, B- i: `. _1 w9 a9 S
fd 1
. M$ o( q7 X$ t3 X ifelse(other turtles-here != nobody)[9 M* Y9 b5 B7 k+ t
   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.) d. O* Z2 Z$ h" y; W& ^
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ! O$ l1 M( c- `% R& q9 a
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
: w8 V! N5 M$ e+ ]0 r. B   set [trade-record-one-len] of self length [trade-record-one] of self
$ w" ]2 }1 o0 C4 y   set trade-record-current( list (timer) (random money-upper-limit))9 N1 }" S1 F: A! _; D- N

* M* {' D* r8 P! ~9 f' @4 c问题的提示如下:
5 j$ s+ W$ N7 G7 Y3 e/ E' L5 C  L7 f' H- N1 K  L9 X
error while turtle 50 running OF in procedure DO-BUSINESS' u6 O) I0 ]1 L: h' D
  called by procedure GO' h8 I* m1 E3 o' P/ x
OF expected input to be a turtle agentset or turtle but got NOBODY instead.9 i) J2 Q" t) C& `% ]% G* i
(halted running of go)- d, C4 r& @/ m- @
1 t- N# I! e/ O' k
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~~  T. u" [+ E8 V: f% B+ H0 W; ?
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
: y6 C$ O$ n8 ~' l& c$ mglobals[
* K$ J! H+ O; h; txmax
: J( @8 Q* Q8 `4 G# C% n/ cymax
9 e9 S8 l4 m! [% x$ {global-reputation-list
& l. o) B: u; X' `3 ^( j- _& r! l7 |' V. M2 V# r6 L
;;
每一个turtle的全局声誉都存在此LIST  o* B0 ?( m1 }: _
credibility-list
: b4 s7 F$ v6 V9 K' u, F9 p;;
每一个turtle的评价可信度
% T. r) ]" z0 F' T* P2 Jhonest-service
2 n7 k6 I) S6 Vunhonest-service
. O! k5 Y+ y) L5 F# j+ goscillation
" ~( }0 F2 m1 v0 @. N* N! E+ lrand-dynamic/ W+ }- G5 L% C8 e% o9 H- }2 C+ `
]
* m8 h& W4 z% a6 u6 L" B
$ [- N* r. E4 }2 Nturtles-own[# E& V; J& d+ R8 D
trade-record-all/ O: R( s/ V; b1 |6 `  s, v4 E" k
;;a list of lists,
trade-record-one组成; @) |5 P- T2 L2 `- S$ A9 M
trade-record-one
% L3 z" U5 }/ E;;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 h0 ?8 q4 S& R- G" u+ [; [3 p2 z* g7 ?0 v2 }
;;[
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]]2 ]$ i* e. b) C9 W
trade-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]% N6 P! U# A" @. f
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. M2 ~4 {. Z+ X( X
neighbor-total3 \9 F' y* ^9 |6 `
;;
记录该turtle的邻居节点的数目/ l2 ^+ m, N; }0 I' A. S' e
trade-time  H, [, z& L& e7 P1 r
;;
当前发生交易的turtle的交易时间( F9 v0 g( i% {. g3 ^5 K* |
appraise-give
9 u1 z! h# z! S' Q9 x$ E;;
当前发生交易时给出的评价
2 V  h8 w2 v2 D$ D3 T0 F& zappraise-receive$ Q: I+ d) T7 q9 M/ _
;;
当前发生交易时收到的评价" H' v. ?. x6 O" v) l/ k6 y9 E7 Q  x
appraise-time9 F2 `: t& U& }6 B
;;
当前发生交易时的评价时间
9 z: A' f# ^$ n) F) Glocal-reputation-now;;此次交易后相对于对方turtle的局部声誉& i% i+ L2 U% f* q9 U2 b; x1 I
trade-times-total
  A+ |' v) ?* P2 ?, ?;;
与当前turtle的交易总次数
+ i$ s; q) ?* _8 l+ wtrade-money-total5 u5 g" Z( ]1 L- ], P( b
;;
与当前turtle的交易总金额
4 M5 i! n) j9 jlocal-reputation7 g. m3 C, d0 N4 V; f
global-reputation& Y  _  W' I6 c. F( c/ y9 f3 N# B
credibility
8 x4 A& X" `. o;;
评价可信度,每次交易后都需要更新# W4 O( q% N/ X9 f2 j) F
credibility-all
/ h) i- E1 k1 b;;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 i6 p& i0 N" p7 S3 R

1 I4 K8 h. W: j;;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
9 h' f7 z- ~: ?5 o! V% Kcredibility-one
- _4 A: m1 q( X% I;;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people8 c; I1 m% f" U9 G5 U
global-proportion
( Z5 U/ X7 z) T" X( E8 R4 Q9 \' acustomer
& t9 z0 h5 [  k% [) s7 r, B/ ^customer-no
' e" A5 E/ {* q# o! vtrust-ok
4 q- E& H& Z( v& |trade-record-one-len;;trade-record-one的长度
) z2 h$ c# e) \; g( z- h) K' E]  e# E0 u# e2 q" n$ o

* v4 f3 i/ G6 X, i7 ~;;setup procedure
) c* }4 l+ k" H6 F6 j; L; V! b. N3 u3 c. s# e% l9 f# H
to setup
6 x8 O2 @0 R0 S6 e6 B+ @0 M( B% }  Y! f* |4 t4 {; o
ca

1 Q. L. T/ b0 @- T. V" s: g. z7 [7 z! a& k, Z9 {
initialize-settings
6 `/ m% n5 [! V0 {  m

( w( o! T( l5 n6 L+ d1 z( Kcrt people [setup-turtles]

. y# p' I) N/ Y" j
+ t& V- j5 e0 r# L- s3 x$ i7 n. lreset-timer
0 d2 s, H5 u+ u; u4 G

4 r  f- C. e5 _poll-class
' Y. ]4 f9 V7 x. }2 j( p, T# m

# M+ S4 F# W' tsetup-plots

. d1 @4 ^# w4 L1 T& D) u$ L2 }% f+ N5 X2 U$ P
do-plots
2 o( W6 y/ O7 N& h9 w
end0 n" A& P" z3 R" n& ~  J$ ]# _

+ ]$ w# v& h9 ^, n6 Dto initialize-settings3 C3 ~0 a8 S1 K! \

) @- |# }( e+ k9 A5 ^set global-reputation-list []

- ^9 `9 q: ~* z( E& A- O" x
% I& p6 `8 }( a+ D* t6 vset credibility-list n-values people [0.5]

3 Q7 b8 c( D0 w4 w2 [/ }& G: g/ k
) Q' `7 V5 u% v4 {& J2 Cset honest-service 0

  v( b' c7 f; w1 j. W" ~6 d- w- Y7 T
set unhonest-service 0

9 }# S  q  U, {: a. U( @4 D0 x) m) ~0 e
set oscillation 0
- T& H* e5 Y# `& t
, m0 x7 q# e9 U- U8 k
set rand-dynamic 0

# y" n( M7 t$ o( h$ Iend% t; n+ q0 j& f" K" w
6 n4 x$ Q% S1 \( a: W
to setup-turtles # F& L! F. E9 N, x7 K$ z
set shape "person"
0 ]) z+ f7 a; Lsetxy random-xcor random-ycor! y% Y  @3 j4 I) q) i
set trade-record-one [], _5 Z/ b2 N2 ]

% N; d8 K3 Y7 ]( b7 ?set trade-record-all n-values people [(list (? + 1) 0 0)] . C5 e% d# h2 }& Z3 P( ^4 Y0 C' ^5 M
! F  a+ H) v; o" a( _
set trade-record-current []' R; r8 V1 s$ q; ~0 |3 t% k9 E+ [
set credibility-receive []
& U+ N6 E, u. |( g; uset local-reputation 0.5
& X0 ?, l( B$ A( x) _! ?% L0 H0 o9 Zset neighbor-total 0  P/ Z: Y, O0 i6 n" [
set trade-times-total 0
1 H, {6 t+ P) ?' Xset trade-money-total 05 i1 y- \  O% Q- Z9 y/ N" h
set customer nobody
: j( U: T. V/ h) J8 g# e- U0 O% X3 [set credibility-all n-values people [creat-credibility]" v$ x- R) c/ I/ s6 _% a
set credibility n-values people [-1]
( V$ d% E8 \  K% C9 v; L9 xget-color
. W9 a  w9 D2 c' ?7 ~+ j: `

5 @! e7 W2 x: V1 v9 iend( D) X9 o4 ]7 Y

& I- D2 h( [& y3 Dto-report creat-credibility
2 G6 W, ~- ~8 i$ D( v/ C! ]report n-values people [0.5]0 `" ^0 Y1 z6 m( D. c0 x! \/ E
end2 P+ H6 b9 @1 `. O% U; n5 {

, b: F' D" H$ _+ b% k" `$ `5 u" Tto setup-plots6 S+ R' R% H, Z) a& b

! A! q1 i# u; h/ {% _; nset xmax 30

/ P2 Z7 E' Q( |1 h* n' G3 u( N) o9 G# z! V
set ymax 1.0
& O* B4 }8 G$ _/ a: Y8 R  }, w
+ S+ R: s7 d/ X) U9 m) Y
clear-all-plots

1 ?% b) b# ?& _2 o" `: Q* D4 e( G2 |7 N+ \' ~: k& t2 F. ~. |( a1 P; _
setup-plot1
, t" U: I2 T0 t+ R7 ]" h7 r

; U$ b4 L, b2 h( t! T1 |1 psetup-plot2
0 u6 U3 L" l, \7 ^; J+ r

2 i* u0 |& M) L* e. }setup-plot3
1 b8 a( ?: s* C  n& i- V
end
* E' P; X7 {" Z( E$ @* E% m
- m! n; ]4 X  J$ D+ {. P;;run time procedures
4 g# R5 q! p7 p: _5 N* Y, Z# p; f0 K! c) z
to go# V) h# c, b) t0 h

" q$ F' b7 T- D! Eask turtles [do-business]
% M" O0 Y: [+ s* h) O: h" O7 H
end
1 F* L' S' d1 s5 C& p/ U5 P+ Q, o, v* B. g8 e) j
to do-business
9 t8 T7 z5 J% _/ p7 x4 b

: b$ f1 t8 D& f0 X5 {$ g+ y" w& U4 j" ~4 X  D% a5 D$ N
rt random 360
# b; M( J. T9 h

8 b: G5 Y0 N& S% B4 M, ffd 1

' P: G# Y3 ]7 g
/ D8 h# N, x$ ]  d7 K: {; M7 ^ifelse(other turtles-here != nobody)[
2 L0 o7 V$ V# j2 i, A

' ]% U! T9 G. e1 i* @- l, gset customer one-of other turtles-here

, s2 B: r% i1 L: x) @. K3 Q5 \8 o( A9 ^' L
;; set [customer] of customer myself
% t; V& {) J7 Q. N1 N
7 H, S, Z* L& h$ r! z9 g
set [trade-record-one] of self item (([who] of customer) - 1)1 X4 r/ U/ n" C/ W& n, Z
[trade-record-all]of self
  K2 V5 r& |& x3 X;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
, G) Q1 \* {9 y& {* Y5 Y9 R; g( q
* i  M' _$ c9 u8 P; e  P
set [trade-record-one] of customer item (([who] of self) - 1)
6 U& m, N8 @$ K/ d3 N) J[trade-record-all]of customer
: C6 v$ }/ }& o. G& o# i+ s
. H7 V/ Y+ d, ~9 N
set [trade-record-one-len] of self length [trade-record-one] of self
6 h* H& k' i1 J
( u, q  o: d: a9 Z6 t
set trade-record-current( list (timer) (random money-upper-limit))
) W$ k) h1 p( C- ?- }1 r
5 o4 x: U* z0 }& N9 y* j
ask self [do-trust]
7 m$ F/ t! L- q% \, Q- ^3 {;;
先求ij的信任度
: P3 F" Z/ {3 e5 n: [
. Z. Q/ Q6 t7 ^8 Q$ oif ([trust-ok] of self)
/ @1 j- L, v! |1 C& F;;
根据ij的信任度来决定是否与j进行交易[+ \$ b$ H/ n! ]4 {0 C8 o
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself0 X5 o- J" F) I8 b) m
' m; X  R( @7 l& a/ \* h7 |7 U
[
: d9 Y8 \# ~$ f9 N' U! }

4 Z1 U* ]4 B9 ]* f& e( C$ Ldo-trade

) V& C2 p, E5 g! S1 ^$ P- v& |
, F9 ~. Z" O8 Lupdate-credibility-ijl

7 D# ?) Z0 l6 Y3 {; n
0 X7 Z6 Y* C0 K9 s0 {update-credibility-list
7 S5 |. j. c/ t8 i
6 i0 M7 b4 a8 L; H2 Q$ E& V

4 t& N  x7 x  J+ [update-global-reputation-list
$ Z) B. P7 a* ]" O* h6 m5 P$ O
' R9 W9 M& k, w$ E% g
poll-class
* I4 ]7 y3 `; s! ~# Z. u3 R* |) T
6 f+ f9 y0 q. w# Q+ X8 t
get-color
4 t9 \) ~# ~9 I" t+ o0 Z; I4 j% w, b
0 T( T5 H$ p" z; m
]]' e& Y+ j0 @! s8 @( M1 z  |( s
& x& v8 r4 Y% ?2 v# V" A3 j; j1 ~
;;
如果所得的信任度满足条件,则进行交易0 A$ V' D% C# l& T
* C) M* t) H7 i6 A0 V
[

$ e$ E) J# i2 w6 P3 J
- p$ g1 _" C1 X8 ~rt random 360
: p, O9 c* w4 z( ]" ]
+ @) K0 m4 c1 E; G2 c- I  y
fd 1
5 @+ Y* D& Y, A) Y3 S/ }: D

- O8 o7 T: b1 c' Z6 |% q]

5 _! w, C- b2 v2 P6 i$ E! e
1 e+ i3 _) ?: y! ~! f; I' hend

0 f4 ~( j% S/ {7 b* A( m
; k+ T; e& ~2 k' pto do-trust
8 d9 h( T  D0 B- x+ y. `set trust-ok False9 U) ~3 Q* K- t# G* h1 [

9 k' j# ?  r  D: M! P# `# l4 k
/ [1 F; @; o2 ^/ x
let max-trade-times 0
1 n. B0 l( F) oforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]) s, a% F* q6 D1 C. i! K$ O  X
let max-trade-money 0
  t) j& d8 N. n2 U1 y) C9 j- [foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]7 D! m4 m9 P, b" L
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))! _, m7 I, h+ L
9 w  R: l1 H( O$ u9 Y2 F# }$ \( B
1 _, R0 j& a- F$ j' C
get-global-proportion8 t8 G+ E2 G  J
let trust-value
2 L9 Z- h/ ~9 Hlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

, |: @1 J) M: V1 zif(trust-value > trade-trust-value): Y# l0 [6 {- N) B$ R& \
[set trust-ok true]
- P3 f" m, q, }9 ?. K" E9 _+ w4 wend
2 }2 U( a  |9 s9 j  l3 q+ }; D/ l5 g& E: n+ `3 _
to get-global-proportion
; m$ h5 {/ m3 \9 eifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)# S1 K; U2 M; z
[set global-proportion 0]
& x4 C( f" q( r: ?[let i 00 w) r# e5 b, |1 \- r
let sum-money 0- \, Q1 W) w5 W# ]3 h" g- r5 |
while[ i < people]
7 B' n3 d9 F; _9 S% l! {% I+ K! a[2 j  a) ~- v9 r! h5 X9 R
if( length (item i* B- _+ \& y8 i" S9 D
[trade-record-all] of customer) > 3 )
% t7 S/ x; Z- L- Y6 o( h' }
[/ X6 h! ^; R: y1 p9 |# t
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
# ^2 h! N# @- []
* K& ^% r8 c" {9 Y3 }]! Q/ t* C- p& j, [4 y' I
let j 0
7 J& }2 B3 z& slet note 0- E" ]/ ~0 C# _1 w- g
while[ j < people]! m1 c0 ?5 K# ?2 k3 z  A0 _7 w
[
: p/ Y3 A$ x  j! Y5 d4 s, [if( length (item i9 k( p) D5 I8 ?1 S
[trade-record-all] of customer) > 3 )

4 B: I8 z- q, E8 K" o% s* d[  `4 Y! A7 J6 S. F
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
7 z1 l! W, c" V  \# y, f[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
+ {7 k2 q1 D+ J) A: D; o9 N3 p[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
) j) U( Z- D  I5 O3 B. V]# g9 O; [, z. e
]
0 P' ?1 `1 I2 ^" _& P: L' u; qset global-proportion note3 ^. f) Y1 B* b# g8 j5 R7 D0 B
]
7 l# a2 M& F9 K  K. O# [5 {6 q$ fend: Y. u2 K: V& y. v; N

# J/ u& i  U) d8 T# C7 Tto do-trade
, t8 q6 W+ @' K" u# ]" `;;
这个过程实际上是给双方作出评价的过程
7 B8 Z  P; g$ H$ |set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
# b  \! ~7 s- R( i; d- m/ Kset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
- z% ]9 y- d# K0 W/ Zset trade-record-current lput(timer) trade-record-current( T) b; w2 w5 N4 B
;;
评价时间
/ {+ W8 {$ j& V( _ask myself [
4 x0 W' b, ^. B+ ^update-local-reputation
4 F. \0 y% a6 p- sset trade-record-current lput([local-reputation] of myself) trade-record-current% Y8 E) Q) U# B
]5 W" n9 W, B. o% \& S3 P
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself; u  C* [7 N+ q7 G7 _. \
;;
将此次交易的记录加入到trade-record-one, w% L  B$ \! {( i7 Q
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)& @0 j. V  V' E2 g# M& }+ H
let note (item 2 trade-record-current )9 S! x. x4 m( z7 p! I) {. T
set trade-record-current0 v/ q- `, T2 S5 Y* m% S5 \5 q7 p
(replace-item 2 trade-record-current (item 3 trade-record-current))

5 G1 a' \. x9 {! E4 E+ G! iset trade-record-current; b( r. n/ U5 ]  Z4 T
(replace-item 3 trade-record-current note)7 [8 j9 o8 J! E* i, F3 i
: m4 b2 R) G! a4 D: \6 e$ ]

5 K# O8 I. Y7 ^* Z9 c/ Bask customer [; G; _( W- {# U; x+ A( j
update-local-reputation$ D! a- L7 T0 l0 Q
set trade-record-current
5 B9 P4 ~: `" `$ a9 E(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

6 c) T* M- n. S6 Z/ w" ?/ q8 y+ _]9 I, B9 e7 S+ o- o3 d6 j
5 O$ j1 W# ]2 g) D. J8 A# t

# n' d7 l# Z) \# o+ Zset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
  Q2 z& l0 }' j5 S- e% b" ~% y
" f) T1 t( t5 h* A8 X/ n6 z
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
# k) Q( P, b4 `2 {8 m;;
将此次交易的记录加入到customertrade-record-all
% u7 p% F. @5 Z* k4 C% B% yend4 a' `7 l1 l8 `  z; R6 N3 b; ^

+ z$ c+ \9 q& d5 C$ L2 @$ k8 Mto update-local-reputation
' M0 |, z, h* w% K9 Z$ S6 Nset [trade-record-one-len] of myself length [trade-record-one] of myself
# Y+ H* Q! G& U7 x7 |
* Z9 [7 y8 D* \/ ?8 q% W# r" L; s* b' d
;;if [trade-record-one-len] of myself > 3

6 t0 P! P6 J( b+ h, s" Jupdate-neighbor-total- P4 s" Z& l( z4 _8 Q+ ~4 R
;;
更新邻居节点的数目,在此进行
+ x/ C- [7 S6 d+ r) O; \let i 3' |7 ?$ w% q' o, W5 c2 x
let sum-time 0
+ W9 Y" T+ ~4 a/ U8 {5 k, A+ g- I! qwhile[i < [trade-record-one-len] of myself]: V/ ~$ ^; e; ]- D0 n/ h/ z1 f1 Q
[5 G, ~6 w9 T" V. W  g9 i
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )! a8 |- D# h$ p# J$ f
set i
3 t$ W$ f) F0 L+ E8 l( i + 1)
3 s- g5 U$ t5 w! e) _* J
]3 W$ D- J% S+ b, S
let j 3
! w6 C3 _& `& Flet sum-money 0# L& u+ z6 ~1 P( ^: B
while[j < [trade-record-one-len] of myself]& [; f) s2 S% z% R
[+ q" K! Q4 U: W. C
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)8 J3 X3 K# ~$ M9 X, d/ [
set j: O8 J- \/ H$ p( `& Z
( j + 1)
# o7 P8 B& S% c) b4 i0 f# O9 _
]7 ^% |5 R  l: i, o) F( c
let k 32 o: S) q2 `; r; X
let power 00 e6 f  k* {' o
let local 08 G3 C+ s1 L  i9 X
while [k <[trade-record-one-len] of myself]
4 u, A# A( w6 z5 `5 X[5 i& D, t, c4 a# E6 L
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) + ^( Y( B7 ^% z0 ]% }
set k (k + 1)* n/ @. `) ~  U9 r
]
  c2 O7 w5 w- i0 q7 Y5 zset [local-reputation] of myself (local)# Y+ p+ {7 k; P% e8 ?- }( T
end* c$ {1 ?4 P' z; x+ Z! H

3 H. h% l: @; l) Yto update-neighbor-total
$ r: M8 T! z9 l8 w3 m1 i
' ?$ r/ l5 B6 t9 h/ s7 lif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]; W2 d( F  x; a

! i1 C- F8 H, {8 V* i" |) ?6 C
% I9 X$ z4 h+ p  _- \( x6 l
end
8 r, H! |8 Y* E% D- u6 U% D1 S0 u) B2 q8 g2 d
to update-credibility-ijl
+ x0 w( u, [/ {6 {3 _& t  Y5 T6 e, y
;;
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 ]) U( U6 q+ D& n0 F7 elet l 0
4 s3 e& R* [8 W1 vwhile[ l < people ]
% x1 C0 z) l+ r* y4 n% O;;
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% u) R- H  S. z2 g% a6 s3 K* x! J
[# s! j7 ~' L6 P9 {& N
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
- y1 h9 d6 v! j1 A; ]! A' {if (trade-record-one-j-l-len > 3)
2 l& D) U; g( g5 h* x1 r/ ^! v[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
6 n( Q6 h9 B9 R# c$ j( Olet i 3+ r$ Y$ O2 X) m8 [1 J
let sum-time 0
& U6 |0 U1 Z1 R- ]6 @4 [, h3 ~while[i < trade-record-one-len]
; o4 Y# T8 Z/ A$ U" d& X" g. h[
/ L: d* f$ {, I$ k( J! n& s5 qset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )8 a" x  X' X! `
set i9 |5 [2 g9 |$ K2 I- F
( i + 1)

8 V% b4 B: @" D8 b  v]4 i8 S; f# @  Q2 e7 G+ g* G6 L$ F
let credibility-i-j-l 0
/ i! S: I8 E# A& Q;;i
评价(jjl的评价)
7 P% `3 Q+ U! k* Wlet j 3
# o& U) R4 e# h4 h0 ?' olet k 4
* o6 Z+ R' j2 e. m& swhile[j < trade-record-one-len]
1 q/ G6 d- j% [: @& ~& f[
% W  g# m2 W% k. Q3 swhile [((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
  b* p! b# d9 gset 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)! a, }; I3 k$ _
set j# T" r- E& ^* c
( j + 1)

* _  U& m# Q, y3 f]: G( @  S0 i- T3 B6 T' Q" i
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 ))6 p) V1 r7 m; e( y

6 H; O# T; y; Q5 b  ?5 h

4 k1 ^8 j4 N( e5 ulet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))$ |, D# i3 O3 f" r' e) c9 N+ [$ j6 R) o
;;
及时更新il的评价质量的评价4 M; s' t& t2 {! o! z% x
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
: ~& T+ L' p, yset l (l + 1)
! [7 a( d' b& [8 ~]; k4 K/ Y8 S( S& f* |
end( g/ f- }; \' O+ k
5 [$ P( u( D1 M% y, J" n
to update-credibility-list
: I. P& b* g! u% M) Q. Vlet i 0
5 ?- f1 H5 t, H/ q# V+ X5 g/ `2 Gwhile[i < people]" Y  `) ]) H2 c' F! Z4 V: q
[3 _, [. S% d' i% @/ v$ q) p$ q
let j 0: t0 g* b5 j4 @. b3 m- K) @
let note 0
9 `0 x) S; g; c( c+ wlet k 0
$ d; b4 g: d: Q1 J1 x;;
计作出过评价的邻居节点的数目
3 c( _& e  {) N, {. Mwhile[j < people]
5 X6 _! {+ z! ^/ P) T: j6 B[
4 P6 ~# K. \& w+ ~7 W, ~if (item j( [credibility] of turtle (i + 1)) != -1)' v8 a$ V) e. S7 h* |0 S
;;
判断是否给本turtle的评价质量做出过评价的节点. e, F6 u7 v& i6 Q( j% Z1 A
[set note (note + item j ([credibility]of turtle (i + 1)))
5 Z5 e7 V: B9 i2 a;;*(exp (-(people - 2)))/(people - 2))]
3 H& t8 ]2 r2 W3 K
set k (k + 1)2 T0 i+ p6 s- ?: o! n+ {/ l
]
, ~3 A1 o( D5 ~* p8 p' e4 zset j (j + 1)0 C; D; {3 M; y) T4 U
]
0 E; A( E. a* W0 v# J% f3 S. Lset note (note *(exp (- (1 / k)))/ k)
# o4 r5 P- m8 o' d/ q! R+ D! m3 K& Kset credibility-list (replace-item i credibility-list note)# R1 y# T" Z& T
set i (i + 1)
* X7 C0 P3 v2 r/ z' []
$ S6 G2 Q2 F. s  I5 R1 j6 g5 V9 ^end3 X% H6 |. ~( d9 x4 `

# v5 p) ^  }5 I5 }2 U: Ato update-global-reputation-list  l, w  q7 v- Q8 [
let j 0
" g  d& F; P2 uwhile[j < people]
6 ?( I# `$ u) W# ?, ^% t[2 y/ p4 H3 N. _
let new 0
) I3 [' t( y( u) ]4 J;;
暂存新的一个全局声誉
" ]" J' T& C' U- w! a/ B( z5 l* klet i 0
1 v' u' L& R! ~. k% \* @5 Ylet sum-money 0! h) G' Z) ]6 J) A7 T& S' H# z* w
let credibility-money 0
; y$ {4 G& \5 ^/ n. V/ \while [i < people]
# f3 F. ^( y- n1 O. h[6 @8 `, H! t6 [
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))( I! ~6 @* o3 [( x" ?$ D5 i' r0 q
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)). P" L7 R7 r: u5 U  z
set i (i + 1)
0 p8 E! [2 M2 [) Y6 A0 a6 x]: N0 a! w) Y* ^" w5 b8 b. \0 j1 D
let k 0# h3 w, r, g" }' b
let new1 0
# y) z; r9 t7 W. ]9 p4 b. mwhile [k < people]8 W. N* t, _  |4 h
[; u% v! Q1 x, H8 y% F0 \! Y
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)3 P& Q+ ~' U% I! N1 {1 D
set k (k + 1)
" y4 v' p. u# X. E( u6 p]3 P4 K6 i& K5 @: b! t7 H7 v
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 3 X* Q6 N6 L+ c# ]: f  u
set global-reputation-list (replace-item j global-reputation-list new)/ F/ n2 w9 k6 X$ B) F# ~8 B0 T
set j (j + 1)
1 y1 |# X6 k( z9 A* r]
; h5 h" @7 f+ f1 n# g* q) s3 @$ \end! R' d. V/ _  `: B. R  ^# }( o4 G

+ N6 c% _. {9 h$ N& _+ n/ x7 ]" g
4 m% A, x  y4 Q$ l
to get-color
) D# l+ u! q2 G; D: |& Y
; v* _, j5 j, k% m# eset color blue

9 g/ R0 g! D6 M4 J! Jend
) l8 L' D* c- p" q# P3 G* r/ E
+ c  @! ~2 M' r$ ?/ ^1 nto poll-class
; D" p6 s+ {" q: V0 Mend
1 f2 C! S3 v! @2 t# J
& \" M4 W- X% P* Y  oto setup-plot1' ^! `! }0 `" Z2 l2 Z6 F1 v

$ H( z* R, ^" [2 ^% E3 g$ O& q! F# Tset-current-plot "Trends-of-Local-reputation"

1 f! p0 d' o, ^6 I/ U; j
% Y4 i6 ?) P; y+ T! q; q* V& Dset-plot-x-range 0 xmax
! y. G9 S+ Y: x; b
% L: ^+ T1 n" f. N; s
set-plot-y-range 0.0 ymax

% }& Y+ o! W( d, T. ^end
" h7 s3 y% ?& c/ Q  V- N3 t6 B$ x9 p# o$ v( ]$ v+ B
to setup-plot2
! k% r  q- n/ Y1 I* ?1 K( L
  Y! |( J5 T. s2 g9 C+ w% _# `set-current-plot "Trends-of-global-reputation"
/ H2 [( q  ^7 v* o

# U4 V6 z9 c! b$ a! S. T8 Rset-plot-x-range 0 xmax

6 A. @8 a7 l6 U' X, r' m; {6 a
5 u" Y6 ~+ a* y' A6 r5 u: ^set-plot-y-range 0.0 ymax

& N9 T. L% u+ _) T8 [$ ~end
- {; ^6 y* U' J* M
* k' O" r  x% Y4 J" {6 V: Wto setup-plot3- G* _5 V. v- P7 `4 B

  M" t0 g5 K( E- U" J! ~/ Tset-current-plot "Trends-of-credibility"

; m% n2 ]0 S* {4 c' Z
+ }9 E- R7 J6 S, }set-plot-x-range 0 xmax
9 S( ~9 ^7 K4 o, V' _$ |" q
) `/ u% b3 X; v+ w. L" A+ Z
set-plot-y-range 0.0 ymax

' Y: S( V8 n- J0 Iend- B5 R% \: K6 U1 U1 y( @3 z1 B9 v

. p# `, s) u/ ]# `+ ?* k4 }9 Mto do-plots
1 q+ w8 `& X' Cset-current-plot "Trends-of-Local-reputation"1 D3 w) J6 i" _/ `2 @% |
set-current-plot-pen "Honest service"
5 p9 ~1 H3 b$ q" yend
7 b' y: O; ^, M
# P$ {0 q% c3 r# O[ 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.
- b0 Y  Q  ^( {$ ~; V: M5 L
/ @8 f! H$ L6 b" |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, 2026-1-14 10:49 , Processed in 0.025268 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