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: 15425|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:
' e2 w( U$ Q* p2 }8 g9 g% c& cto do-business - i( _6 W: k2 Z& [6 @
rt random 360
& x; ~- ^+ H) C/ ?  y4 y fd 1  c$ ?4 y, ?5 J) C
ifelse(other turtles-here != nobody)[& _, W9 E2 ?5 k3 X
   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.$ c6 A5 \, q2 Y% @
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
2 k3 U) N) g% J   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer3 \& W: B2 F" Y, J
   set [trade-record-one-len] of self length [trade-record-one] of self
4 i2 U0 }) u/ Z# w$ _  \9 j, G   set trade-record-current( list (timer) (random money-upper-limit))
! H3 }4 x8 }9 ^; x/ D* h+ C8 W/ }0 \8 k; F+ S2 Y" ]
问题的提示如下:7 i8 Z$ @/ i0 S8 g" s5 S/ j

. I7 v% z. }( i; ^5 Ferror while turtle 50 running OF in procedure DO-BUSINESS
$ {2 G) t1 }; L2 S, A# ~5 J- ^  called by procedure GO5 o* V) r8 t. d5 E
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
% u5 K) ~" M. j* ?
(halted running of go)
: v/ J$ T/ K9 ]4 o! s1 k; V9 C. V1 _* w4 l1 t7 j& K" v/ h0 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~~+ Y: H) U3 j* F! [0 |
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
3 T0 j" g5 u" G' Qglobals[
( J! i# Q( D, A# A# ~( `% ?; l1 mxmax8 E: \' {; C5 X, N; A& l7 w. o# C: b
ymax7 [( t- @' d$ Q6 D" ]
global-reputation-list2 p6 V3 L# U9 ?+ q; |- ^1 i' M0 c$ b9 ]

6 r! g* ~/ J( g6 f5 D. X  m* g;;
每一个turtle的全局声誉都存在此LIST$ ?- D' P$ q0 \
credibility-list
% Y. E) \- P( A1 S6 t! };;
每一个turtle的评价可信度) y/ @; O/ K) ~
honest-service6 j1 d: b  v# Z8 J
unhonest-service
$ s# ?5 `3 o3 [7 g. koscillation
$ r. I- d( v" hrand-dynamic
( W" A; i- i6 P# R$ W]. }0 }1 ^2 R& ?0 t7 ?$ V( h% Z# J9 l

0 k; V9 _  g1 t0 \' I$ vturtles-own[, n$ d( W. E: `0 f
trade-record-all' F3 ~8 I% B9 U1 \) ]4 W
;;a list of lists,
trade-record-one组成
/ _: x5 S! l  p7 \7 ltrade-record-one% C* D, S6 z5 I
;;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 |& q* {5 q0 K- O: i7 I8 x' i" P2 r0 j
;;[
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]]
+ g: x% B, W, [+ Q: Qtrade-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]/ @$ v. F& a7 o& w9 ^4 c
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
8 |2 [: k# Y* u1 T/ e! Hneighbor-total% A% ?9 T9 f0 `$ L; X1 a8 t
;;
记录该turtle的邻居节点的数目
& p% b; V3 w- [! M0 _trade-time8 u* M) J  Z4 R! ^
;;
当前发生交易的turtle的交易时间7 }& M+ d# B7 G3 Y7 F
appraise-give
! \% J* T: b/ f" @/ z  c+ F6 ];;
当前发生交易时给出的评价
. j' r- v4 ?+ h# sappraise-receive9 T+ z' m2 ?( A# ]# f8 S, A
;;
当前发生交易时收到的评价
9 g  b3 X6 B! zappraise-time
7 |( U& ?/ Q- H$ L* R. Y7 Q8 }9 N;;
当前发生交易时的评价时间/ \) S. s6 ~4 }* B1 C
local-reputation-now;;此次交易后相对于对方turtle的局部声誉) P+ N  a) |+ i
trade-times-total  P$ _2 L9 C2 l- H! J/ I* ?: x
;;
与当前turtle的交易总次数8 e# F- \$ i! T+ j/ U" \2 a
trade-money-total! C8 T4 I: _; V* f6 _' A! p
;;
与当前turtle的交易总金额) Y- Q  x$ m0 V! `3 U7 d2 M
local-reputation
! j* N: i* b1 z* ~# j% Tglobal-reputation3 }, h* Q( d0 @: P
credibility
8 W7 z9 O& n7 E;;
评价可信度,每次交易后都需要更新
% K! b- R- q, W6 g  T/ rcredibility-all" t( C, g1 n! T1 b& 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; \' I9 r6 B3 l+ U5 u

5 ~+ |8 e; ^9 Y% Y/ O7 m;;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  y- I# I4 y- |' S' J& m
credibility-one' ^; D' F/ C3 I" 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people; p- Z, E) p: a% m* m, j
global-proportion
/ h* b  t5 N% ^: @6 m1 Tcustomer
8 L0 m- _- z$ P8 [1 ~! I. Fcustomer-no& N- v! X9 B! U
trust-ok
' p6 g. f) i! v3 I3 _* Ktrade-record-one-len;;trade-record-one的长度5 ~6 [0 q5 i+ X& \  E
]7 g) f8 h5 v8 f* U2 @7 B

+ u  E2 F* n3 o' e5 {/ O;;setup procedure
( @% f' p. s) J
) \+ b5 C0 j" D, P4 ito setup
& @0 L* w1 v% N* ]. N8 j( W+ p# j
ca

5 @5 X. K' j7 A' g' U) V
- b7 e" W- i' u8 C" ainitialize-settings

. f+ I8 ?; y; r  T
0 r; a/ c, o% o7 d2 Ecrt people [setup-turtles]

* R6 o$ x( C) O; E9 ]3 V5 m+ l
0 X3 K8 Y: U! X5 r) H/ Xreset-timer

- n; y" M4 y0 l" r5 m, I0 u- v& r/ n3 ^& [, G+ g
poll-class

5 l5 R1 s1 b7 x% g- q+ C' u0 g- H' a2 i+ ~$ |1 X8 i$ A
setup-plots

6 G  q# G9 C2 o: X/ Y: \
4 \2 h0 G, `9 m4 i& Y# _) Qdo-plots

/ q; U1 \- {, Aend
2 |, C3 |- i# [3 }4 T' }
9 H& ^- X" {; k) X" E' ?to initialize-settings# D6 C: B, u8 G( r0 n+ W
" p: J9 i5 r8 t9 D
set global-reputation-list []
0 H5 @/ Y1 C7 d; S5 R3 S

! o" {- E7 F; H( m; }# D/ Dset credibility-list n-values people [0.5]

/ {- k  @( ?# o7 z( `. D7 A% }$ h/ T3 b  k4 q
set honest-service 0

3 V! S3 M2 W9 ], T& J- Q% e+ _  ~* m( ?+ C$ S
set unhonest-service 0
' H3 u! R2 j) X# Q

0 c& J* u- n* y; Pset oscillation 0
4 {; n, R9 {# f6 t; p' @3 }
6 B- ?' @" ^7 R: n
set rand-dynamic 0
) Y# Y0 F- S" h
end
7 {( v4 N# H. I% y7 `7 e2 a1 O* C3 V2 N; B' U9 ]
to setup-turtles + S( v; C1 R/ ?  A! h
set shape "person"# N1 D+ q" E; g
setxy random-xcor random-ycor" I' I4 j: _8 ?0 ]0 c
set trade-record-one []0 d1 `& G. w5 G* {8 G/ t& i

0 v; C* K4 f$ P9 ?: kset trade-record-all n-values people [(list (? + 1) 0 0)] 4 k9 V# P7 @+ b# K! s4 p

6 @  S( \, K! a6 u6 G; C2 g! p% dset trade-record-current []6 @( M8 G- t/ E- f7 R( Z; e! m+ W
set credibility-receive []0 a4 ?9 t" T2 K& A
set local-reputation 0.5
- H2 l$ {: c6 @5 k8 f! k/ k' ?set neighbor-total 0
: u/ G# y* O& Q6 A7 G" n* u/ sset trade-times-total 0
& G  [3 x1 E2 v2 N8 F3 W7 l( c5 Qset trade-money-total 0
: v8 @* K7 a1 b  Gset customer nobody
$ S* e* o4 s9 ^. d6 `$ \set credibility-all n-values people [creat-credibility]; _. H' g" P1 ?
set credibility n-values people [-1]
. F$ F) J8 S$ p6 i* R* I, jget-color
) u8 Z* K& `- m
) D9 n+ J/ ^' W8 f  t" s3 ~# I1 s; ?
end! h, l# k/ L# H6 }, R

# d1 _- ^3 Z! m; Sto-report creat-credibility) Q, V/ u/ y7 P+ r
report n-values people [0.5]
$ {/ c( o8 i7 z: hend( i0 N' X6 c6 M1 _8 m
- I- b1 P) N4 m  ]
to setup-plots
. p3 h4 s. l% k
5 Q0 i8 D, F7 d9 h2 D4 e) e  r& oset xmax 30

2 y: X, g2 t; _9 U  U/ d- @" k* G5 q
set ymax 1.0
7 ]0 R  s: P0 s  U

# R6 v9 j1 U) [! kclear-all-plots
4 t1 p- Y- t3 p7 b# V; w
3 U3 o; p0 t  g6 j, `
setup-plot1
6 t# E- H7 d' `# R
, o; o. M  V( A$ D
setup-plot2
* q/ J4 @' p1 r7 [* a

' Y; ]& c) c0 L# j3 l9 Usetup-plot3

: k; e- ^& H& Q) J4 dend* H) g* o% {' k
' p# p( O6 ?7 c- C, v
;;run time procedures
$ |6 n- C& P. E' {  H$ M, ^' v  c" C' u9 ?% k
to go
/ r' }# G- C' y7 ~5 M
3 B: n  P0 D. b4 g" t6 c- @4 Q  S3 bask turtles [do-business]
8 y" B5 d" o6 R9 z8 R
end
. g9 P" d5 ]3 s
- u1 \$ [6 w* P* H( B( Qto do-business
. s/ `1 @/ f' G" m% `

2 T9 s! ^  h4 _4 j) A" q( Y7 u* e: v  J( `$ b5 o
rt random 360
2 m2 ]$ O4 f( P; }- R7 E) \& |1 v

/ `0 v- j7 }: Y5 q) O( {1 qfd 1

& A5 W3 L4 V& y# C; q$ m! _7 D( y- S( U
ifelse(other turtles-here != nobody)[
" Q% j# V/ k8 Z+ B  O; y
7 @& x3 O( b+ t6 S0 F1 P* j. X9 b
set customer one-of other turtles-here

, L5 z: t+ f( s. O% _8 Z, o, f9 u
. w0 M7 a% v; c2 P5 L  Y# j;; set [customer] of customer myself

. v/ C* Y; q6 n7 @
; a* v7 d1 }* P8 H: X; \! Eset [trade-record-one] of self item (([who] of customer) - 1)# E$ |' F( L; N9 \1 }
[trade-record-all]of self% M9 v0 E5 ]& o# b6 R
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
3 Y  E, i/ W) z2 z2 r0 Q

; M7 ?+ S& \8 w. wset [trade-record-one] of customer item (([who] of self) - 1)
& d/ R0 n0 _; o8 L: v5 T0 o8 u[trade-record-all]of customer
5 O' r( q# f/ _
/ h2 s, P$ W" k9 j8 T% k) s
set [trade-record-one-len] of self length [trade-record-one] of self
6 m, S+ W" H2 Q" M: {, ~0 N/ W

/ s  G9 H: E( ?* y# L+ u$ y% m: qset trade-record-current( list (timer) (random money-upper-limit))
" L+ I, l0 b: c7 v
2 Z9 b+ }) y0 c0 i
ask self [do-trust]
4 q+ O5 ~: U: u;;
先求ij的信任度
$ g8 G/ p" x7 |; k) e; R& P% W* G/ v$ H/ Y9 i# ?! F, e
if ([trust-ok] of self)% z' V4 \+ y- V6 G1 b" o
;;
根据ij的信任度来决定是否与j进行交易[+ R1 q1 z4 ~- }6 y- o% S( r' O: i
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
. r! b: ]' R: l8 P( v6 |0 T$ t5 x8 c; C' T$ Z: Q& N1 y: S
[

1 ?& K1 S2 N, A' V" k4 q& r1 B( O0 Q5 ~0 q. |
do-trade
$ P2 C5 E9 D& u( U% @

! |3 N. s% t  ^% |update-credibility-ijl

; h# f3 J3 C; `! t" [
# K/ Y* w0 z8 V  b7 |7 Jupdate-credibility-list
+ Q- i5 k5 g% C1 }5 x. N1 j' Q9 q
3 K$ r( P7 X- i0 H1 I# y

) p6 r1 ?. L$ C+ Vupdate-global-reputation-list

; b- X( `* U3 y' s* X. }& b7 {' n/ ?6 \2 \/ N6 p
poll-class
- H8 j7 D/ f: R; w

; M( X1 F$ f/ O* n$ Bget-color
( t/ \/ \' f$ R; c% d5 Z
/ P" i: z# Q( [& k
]]5 d2 c- S1 {, a; _- v
8 r0 U, u; k* M, i8 ~" g
;;
如果所得的信任度满足条件,则进行交易/ P" j$ o) |1 A) U1 I' s' X: ^
  K5 U: T; C/ z* h1 V* a; T" W
[
4 ?$ i5 W* _* p/ Q! s/ n; O( ]8 x
( I3 Q4 D- [! y9 X, |" h
rt random 360
* ?% `/ w' m! f$ b

6 ?5 [3 c7 u8 \/ w5 c5 B' Qfd 1

( e$ P- |0 _! k( z9 v
$ M! L7 C) R" d  `4 []
# g7 U8 F6 o% j1 l' o9 K
$ v/ l( _, H  b) r' C; \
end
# }* ~) m3 E% C. V; {/ p, W

' p' s6 K6 N" E9 d5 K% Lto do-trust $ p! `8 X+ ]9 b  P; [' r: k
set trust-ok False8 }; Z# ?# n% }& |2 R( @2 z
2 e9 W' }$ `7 ]/ k  K# [/ v9 y

* S; W! h& I8 o4 F7 S$ @. S3 Clet max-trade-times 09 I1 A8 @1 d; ^3 o1 [* }* r: c
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]9 @; v$ v( b" g: @! |! e* j/ \
let max-trade-money 0
  x4 y& D3 }+ W4 H3 n5 U+ b8 xforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]( m9 t; M9 B$ B9 \: ~$ ]  }
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))  y7 R: H7 V  K, S

& R0 ?7 k5 `: n7 D% b

2 M- k  l! v/ j7 uget-global-proportion
/ t& L( }6 V( s$ y" a  m0 K) }let trust-value
3 ?2 F! p/ J( p8 plocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
( ]9 g% e0 G7 f6 _" z+ o
if(trust-value > trade-trust-value)/ G8 b0 Q7 n; H, p9 K8 f( K) |
[set trust-ok true]4 V2 |3 k) h) A4 {+ c; V- l+ y
end- N5 A2 }5 _( K
* Y1 Y+ m; H# ^
to get-global-proportion+ }( K0 x# w6 L7 t) u$ p- l' {8 R
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)5 Z9 U8 V. _' \+ o
[set global-proportion 0]$ j/ Z9 o, ?9 h1 P
[let i 0  h3 N& q: Z1 y. m
let sum-money 0; M* Y8 x2 y& D
while[ i < people]
' S2 C: C" s% x[
& h, ^* e- q0 E  D1 T. i8 n3 bif( length (item i& y' f: T$ f. T$ E" r( T' C0 [
[trade-record-all] of customer) > 3 )

  y2 |' ^8 l& u. f1 U) K: {( ?/ L[- _- R* O1 _% X
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
+ B0 @* x6 W( m4 Z- r]7 j  u7 z% j# L& f7 d
]/ q5 p' p4 N: s8 }
let j 0; q! z6 E1 k/ u/ x/ V. j, h& U/ a
let note 01 V9 f& q+ N) l/ R
while[ j < people]
8 k; }$ }  D3 z0 n# s/ w9 W! A[) L! h. Z" Z) d6 h
if( length (item i3 _  t2 `# E; c& f9 i
[trade-record-all] of customer) > 3 )

! w# q$ P' L/ L  ~/ _1 R1 Y[
) C5 q1 z, {  f% }ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
2 ^  e: `# R1 |. F8 {3 c[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]5 u: ?; @4 |# D5 o# B9 \( |0 G  R6 g
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
- l; m3 n. F: f$ D3 Q- x# `], E9 q; e* _; I( t7 e$ h
]
8 H6 S, K/ v; L  qset global-proportion note
3 O+ M; b/ ?4 y% k]5 [$ \: u, M+ W  I8 h
end
* v( N$ O" \+ r+ }/ g* F- Y
; p' R8 O3 L6 u# R% |/ u1 U* W3 Vto do-trade
" @8 A1 T4 j$ i0 g% q% Q+ O;;
这个过程实际上是给双方作出评价的过程
. C- k1 e! t! ]" n- H. F3 iset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
) ^* y: p* Q) h% Aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价- d6 k, n( [! e& R1 q% e
set trade-record-current lput(timer) trade-record-current
% g8 g- F: H2 K. H  {# w;;
评价时间
; f, {) K) X! ]* z7 j7 sask myself [4 s% [7 }2 G( C, D6 @, d  v
update-local-reputation4 n0 Z: @& v9 v/ a
set trade-record-current lput([local-reputation] of myself) trade-record-current
5 |5 C# A) Z$ ?]4 k  U! }# }+ H( w% o
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
+ q( _& Y( }) B& m2 u/ F;;
将此次交易的记录加入到trade-record-one
- u2 [9 U0 F0 a, J- m! Oset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
7 W8 o* _  |9 l( O# }" b" {$ x' flet note (item 2 trade-record-current )
: }# O" Q* V* m" pset trade-record-current
3 n, v: _8 u5 f" ^( t(replace-item 2 trade-record-current (item 3 trade-record-current))
3 L7 \0 o, y1 v
set trade-record-current
4 V% `3 X; S* [1 N1 [( Z9 v(replace-item 3 trade-record-current note)& E! k. Z) o( Q  D
- L8 y& K; z7 p+ h9 c) J
, A+ `  E3 d& t4 J1 s6 U1 _* X
ask customer [" I- W# T2 C2 H- _
update-local-reputation
* {6 o$ ^4 l# t! hset trade-record-current
7 D3 W8 Z* [' Y! J(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

, F2 A/ ?' s) ^7 z0 G6 y]& ]/ _: t: R$ I4 o+ G8 G4 E3 h" E6 l' B

- m. c  b5 c8 M
$ P2 e  }  {* u" ]) n  k0 m" M2 [0 }
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
0 N% B' J# l  m5 D  D. {

! k# Y, _$ F5 n  l9 T/ K5 `( D& ?+ \set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))3 h! y: V6 e2 o$ U$ c
;;
将此次交易的记录加入到customertrade-record-all. b9 A8 ?& s  G) }9 ?2 e
end4 p0 |# H: ~; t" M

& U  H) z2 x' B/ |9 i) qto update-local-reputation0 X, |0 ^5 b* O
set [trade-record-one-len] of myself length [trade-record-one] of myself
0 P2 @1 j; I9 C! {
. ]# J6 @& a# s/ f; C( r* L, v  l( s
;;if [trade-record-one-len] of myself > 3

# W) P+ b  h4 P, fupdate-neighbor-total
1 v9 D! [* U9 s) D;;
更新邻居节点的数目,在此进行/ Z) L. z: H& W0 T/ g9 M
let i 3* f* A; \; c3 m* u* J
let sum-time 0
( J  F1 y/ b# p0 Z8 F. ^7 ~, H& qwhile[i < [trade-record-one-len] of myself]
* A% }7 h; t7 X: K1 R- B! r[* \! {! z' L, O8 h9 f
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )  w/ M6 G3 ?4 q7 O  W- D0 z7 r
set i' {, U' [  [9 g: W5 R( a- K6 ?, x( K
( i + 1)
# r+ I* m: p+ d: ^( g/ W+ _
]  \5 X2 f" A# C3 a
let j 3* X% r0 q3 G* }3 n& }5 i
let sum-money 0. l/ k8 b* h/ S# ^7 A1 R% W1 Q3 I. d) w
while[j < [trade-record-one-len] of myself]
. ?0 w  {# l% z( m[8 [9 d) e  o- {
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)& p" f) S1 J/ I- Z! u3 n' q
set j% ]2 L/ ?- c7 l1 D# Z( F
( j + 1)

& z0 |* `4 G  C$ i0 d1 R]
0 ^6 w3 i( [" I( b8 a6 p/ ylet k 38 s5 C+ A, r- S
let power 0
4 F& I; ?$ d; K+ ylet local 0# x& G- }. r+ C, a1 i
while [k <[trade-record-one-len] of myself]: G5 z6 Z3 ~) Q8 V( Y( N
[
; i$ q8 W1 w$ D3 Uset 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) ) _3 w: Q7 Z) `
set k (k + 1)
. B9 Y6 g. L" X, o! _7 B% S]
$ ]- ?8 v! a, L5 h+ _% U0 B/ k1 Jset [local-reputation] of myself (local)
4 a/ I7 R# e# [6 ]- M  xend
% r& v# b+ S1 w) `) @- K: g5 A  z3 K5 [% d* t2 ]! G4 s2 j
to update-neighbor-total
) F+ j4 A* ~* d: u* M4 D5 h
+ d; c+ C3 H; i6 Cif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
7 i- t$ x$ S' F. T- B; T
% Q5 R( U3 f8 q8 Q; L& d
3 c& j$ I! X; q
end
7 J! Y) ?, k6 \5 u- z
6 n9 x, J" }) q6 V( _, @1 Cto update-credibility-ijl % P- C* E6 ~* V9 S3 T! G( o
6 |( d9 l4 L1 _, b& S! H; u
;;
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。
8 q2 N; r" U4 Alet l 06 o* E8 `9 ?% t0 `
while[ l < people ]
& d8 q& d; ^3 v8 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6 Q, x4 T8 n. ^& i; z$ S6 w0 _9 \
[1 l8 e) W, v! Z; I* V0 e% {
let trade-record-one-j-l-len length item l ([trade-record-all] of customer), Z9 Q9 P5 q7 W, Q; t) W6 j8 G( C
if (trade-record-one-j-l-len > 3)
' c$ z' E& {6 x  b9 R5 M  d[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! f1 Z! i5 r9 A# x. T& W! Z
let i 35 p$ Z( C. C% n6 k9 t$ p9 n
let sum-time 07 ?0 Y8 H  _2 b2 G/ K! B
while[i < trade-record-one-len]
% q! t) F& m3 R& ^& n9 [$ R# {[
* o4 U. L& }$ a) K; k% I3 i# }! j+ Iset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )# l+ E* g8 g: a: d
set i0 o& \; z1 Q, t4 s) k( F
( i + 1)

5 C) s' d9 {+ t6 S]
3 G4 d& e% H  f7 K' Vlet credibility-i-j-l 08 |: Z: P' ?4 P8 u5 f! U2 }
;;i
评价(jjl的评价)7 D- c: [: \7 x5 A
let j 3
3 Z# b% g  a# Z: I- {4 Zlet k 4: q# e2 u& {& u6 F8 r3 G
while[j < trade-record-one-len]
' F3 E) Z7 q0 t[
( B+ z& q3 ]6 ^0 Zwhile [((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
. ^% X2 L; S! s' e4 y1 Cset 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)
7 e" T# I) A. I! p! u: Wset j
6 G$ J; s6 P; M$ k1 Y2 S( j + 1)
; t* |/ T. P3 @$ {' K* x
]. A. j% G$ I6 N
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 ))
) t" d% b( M' R
5 C) M* l( M( b# ~, ]+ M* I8 }- T
. \  [4 A7 q" n  g
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))6 Q( l9 x4 s& M
;;
及时更新il的评价质量的评价
* z9 `5 ]. |1 T* Kset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
( Y; d$ h3 n# U& aset l (l + 1)- _# Y+ j2 u& n( T$ e, j9 P! _
]
, i8 U& ^3 N" d3 lend. d4 @" z4 _8 e- ]& T- ?) f4 w

. n! R; Q5 n1 i; t+ z* gto update-credibility-list
8 ?+ i% P. t4 h0 \0 J' blet i 0% m- v/ ?/ \, |1 \" Q) o2 x' H3 _  C- @
while[i < people]" i/ g! Q8 q2 k7 X# K
[
8 _/ f! w; r6 K! R9 _& M3 klet j 0" z, x5 A. V/ a
let note 0
2 X" P9 @- z  ^  S8 E8 i; o. Hlet k 0
$ Q' E& p6 D! U5 Q) g9 s4 X8 L) Y;;
计作出过评价的邻居节点的数目' x* t7 [1 l1 O9 }
while[j < people]
' ?2 w. G1 P8 H. X, Y+ s6 t[/ `: [: R; H& ~, w
if (item j( [credibility] of turtle (i + 1)) != -1)+ Y$ ?4 l, A7 {4 q$ f
;;
判断是否给本turtle的评价质量做出过评价的节点9 d( N& S" B: D0 `6 ?( x( F
[set note (note + item j ([credibility]of turtle (i + 1)))
0 g, C, X, ]1 c3 |2 b% ~6 p! v;;*(exp (-(people - 2)))/(people - 2))]
( S' z. m+ L5 w1 ^- p8 h
set k (k + 1)
1 y2 I7 N" |7 E6 J; N- }; ?]6 k) }2 a, W5 f" `
set j (j + 1)
% Z! b0 H  ~! l/ Z5 n& E2 p2 c  ~& S]
4 u& E% i8 s5 g- Lset note (note *(exp (- (1 / k)))/ k)
% E6 B2 U9 j' C* l5 j, Bset credibility-list (replace-item i credibility-list note)  R+ Z  F* M  X8 _, M- D
set i (i + 1)
' r6 z5 L% X- A0 m: c( b- [: s]8 C; [* {6 F. B  h/ [+ C
end
  d( A/ Z  ^' J% c8 s' \% A: E0 @" _3 D, p: M7 v1 f/ J; R
to update-global-reputation-list! D, W" {1 q7 n  X1 ~! o' T
let j 06 {1 I6 |% y. Y
while[j < people]7 X# T. U, e! B# D0 ?4 r
[
5 x( R5 a2 z3 i! qlet new 0
: c0 u; R2 D2 M2 X/ s;;
暂存新的一个全局声誉6 |/ P7 X4 h  X8 h* j% P
let i 0; Y- m1 d' ]' l
let sum-money 05 U" f+ H) a' ^( x1 L6 S
let credibility-money 0
$ J  h8 u  C4 ]8 r, Awhile [i < people]
' j1 @( C0 x' X( N; d[
( I& I4 A/ O+ t' K! Vset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))), `9 S; g: {4 H% m4 H
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))# z4 s# k  M7 m9 h+ d$ l
set i (i + 1)! l& p( m; S0 B2 D0 u
]
. e; f  y$ k) q0 L7 k/ t. klet k 0
# I4 f8 r0 g- F/ I0 w  D3 I7 C+ U& Blet new1 03 o+ R" D- J( k+ U( t7 s& ]
while [k < people]
- g6 @( D2 F7 e! [4 H+ z5 Q, L[
- P5 F1 L* U5 B+ Mset 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)
2 Y0 n+ Q3 e+ qset k (k + 1)
4 o* U& b# A3 L, b1 X- {]; M0 P, ~4 ^: K; b/ `- m1 d
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) , e5 b% ^1 {- K8 I5 }
set global-reputation-list (replace-item j global-reputation-list new)
5 e1 K' G9 s+ V6 R3 l, wset j (j + 1)
$ W) C3 ~  M& r8 ~. B7 X  y]/ x) p6 o' t. T1 _  L/ G  |
end' |7 Q( o5 ]. G& A4 `- l

$ s0 R% h' f! S2 t: v: p* E- r4 m5 A0 n! R! Y& ~7 _3 X
9 O  h  t$ k! x
to get-color% x% X: B2 ]' }; m) f" C

, _/ P/ U9 [' S$ a$ t, w$ eset color blue
5 h) t4 p2 n; \' e) p9 C
end
0 _/ u# s- `* {7 n9 d, {+ `3 L5 i' r' W# g$ b  p+ O- E
to poll-class( s, C. h% a7 w/ b: v
end
5 L# G) B. ^3 Z) O/ G, D  g; e2 n6 l/ B
to setup-plot17 |5 A. H8 {$ W+ q7 t* ^
' F" j+ r, A4 V% |, \2 S" |
set-current-plot "Trends-of-Local-reputation"
6 F) B: X' v! t+ w- e$ u" ^
8 Z2 M. ~. z% W/ \/ n
set-plot-x-range 0 xmax
7 ?0 U* U. S8 G0 F8 J+ A7 n

! G1 w! ~, c/ wset-plot-y-range 0.0 ymax

: g) o8 A$ H: @3 V" ~( G* Yend
9 C! f) s4 y* A# J* X2 ?" d
* X. ?4 P+ c- c, ~6 ]% P/ o: Gto setup-plot2
) @) C7 c( `" `, y  Z7 g
9 U: L6 F! a, I( {7 |5 rset-current-plot "Trends-of-global-reputation"
: q$ @, _, |, `. N2 x
/ u/ n' y, B+ X3 z( o% z
set-plot-x-range 0 xmax

) m+ m( t% h- K6 q$ i! |. _+ ^  H8 @3 a, l$ e
set-plot-y-range 0.0 ymax
; c% U8 q' x7 J. b) J+ \
end
% u9 g/ s% L& u% [+ V4 W  q  Y1 E
to setup-plot3
4 R0 m2 n2 k3 z, `3 C
4 E$ @( H! Q' _+ ~7 Z1 E( jset-current-plot "Trends-of-credibility"
6 I0 {0 F% \' A" M0 N# C: I8 k5 D

) V' y" Q2 x* N0 P# S% Q" j7 Iset-plot-x-range 0 xmax
- [: A" c/ M& N+ t5 R' Z

' T" M( N! D6 O' @8 g0 Hset-plot-y-range 0.0 ymax

+ I- R: @7 c3 Z4 Y8 z/ i5 gend
' e. l3 j! l3 m0 Z& q# M
% l6 ?; H: z  }6 `2 Tto do-plots
  a0 m& w5 k. C3 o) _9 tset-current-plot "Trends-of-Local-reputation"
# A, I' O/ Y( A3 `, b( S3 fset-current-plot-pen "Honest service"/ F; n& B8 z% s
end
0 Y9 C- z, S  _9 q) J0 p: q* p9 C" T; ^% J6 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.: C; T( z. X, k  S. }& L

* T% r; e2 k7 |! H6 c+ h; a' g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, 2026-6-14 09:17 , Processed in 0.022050 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