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: 17132|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:" k7 t# Z! f2 d# w
to do-business 5 b# p& o7 J: I% s2 _" I
rt random 360  D0 K( y- m: z/ E# h# ?; e8 p5 F
fd 1
3 q6 l) W! d; l4 J. r$ k. r% \ ifelse(other turtles-here != nobody)[
  J% b1 L6 b1 ~- P2 H   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.; ~, v; y: j) |% p
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
, h! K0 }' u  l   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
6 P% V) a( G7 n2 b/ p1 `3 D   set [trade-record-one-len] of self length [trade-record-one] of self
* b& b# J/ K! u1 S( V' l( ~   set trade-record-current( list (timer) (random money-upper-limit))
/ ~1 n9 a; t3 G: P
" T1 p6 K+ H  |& y. R8 K问题的提示如下:( a' ~. ^) q3 ^, U8 E+ |0 u

5 Q9 p1 @3 G( y) J) @  A$ |) B% derror while turtle 50 running OF in procedure DO-BUSINESS
8 R! ?3 k* b4 q% F3 H9 G+ S/ G  called by procedure GO& i  r* {- `) @/ [& o  c$ p
OF expected input to be a turtle agentset or turtle but got NOBODY instead.. p7 u/ n% P; T
(halted running of go)
+ f: n" a5 }3 Z. U
4 v6 L. _' u7 q# m: J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~~
8 Q3 M9 c5 c0 _" [3 q) l9 r, p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. s# ^. l) P8 d( P) V
globals[- `- d0 W1 v8 v* y+ s, y
xmax, C! `) _9 Q4 N
ymax
0 O! [1 A; s9 Tglobal-reputation-list
8 G7 E& g6 Q6 ~, U# C0 Z/ G9 Z
/ |9 D( l+ m1 f. D2 ?: [;;
每一个turtle的全局声誉都存在此LIST
% {$ `; T; }/ hcredibility-list8 r3 m4 L7 Y$ T% d& N. j/ L# c0 _
;;
每一个turtle的评价可信度. A5 \  A4 o0 I9 p0 _( k0 m6 Z# d
honest-service/ h* H, j* E* j# x/ d+ z% N8 n# K4 Y" ?6 {
unhonest-service6 d% N5 I# Y6 u( W' f) P3 T" j: d) J
oscillation
1 l2 t; m! {/ `' q  T( mrand-dynamic# l# }9 f- z6 r! A- e/ u
], ~% W4 c2 q1 V7 O
3 r, v$ N5 U5 ]4 J8 O6 \- z
turtles-own[
* U7 o! B( K) Y% T% Ntrade-record-all/ l8 ?& l/ l6 d' m
;;a list of lists,
trade-record-one组成
9 U, v' ]& a! i/ `& v* G: c5 n6 ^) itrade-record-one
( {0 h5 U5 f4 J: ];;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
  L9 n/ \7 H" _  {
- q: h' X7 }) [2 P8 @;;[
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]]
  W3 _  T, Y: Y) g+ r0 a: utrade-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]! ]# {/ Z: U. `7 e+ I1 }: v8 K
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
4 y& p; o& h4 N4 p# qneighbor-total
2 @1 a( [& z9 E2 h3 \* y& e;;
记录该turtle的邻居节点的数目8 F0 P5 j: u4 P% B
trade-time, I( p- J3 A) y+ S$ m0 F
;;
当前发生交易的turtle的交易时间
+ S8 {: o3 ?6 Yappraise-give
- i0 x- _' N, @;;
当前发生交易时给出的评价) W5 m+ i/ Y# ?4 j
appraise-receive
5 Q! e$ {, ^8 o4 L: M;;
当前发生交易时收到的评价+ ~8 r* @7 {% E. d4 W
appraise-time
: }& g! }6 m- p2 P+ u; U6 G( X;;
当前发生交易时的评价时间9 d" h' J' ^' |, G( w: X! ?# C; N
local-reputation-now;;此次交易后相对于对方turtle的局部声誉6 U* a8 i8 k, `: l# ~  t* K
trade-times-total( [/ j5 u5 x" D( ^. J
;;
与当前turtle的交易总次数- _2 f* ~( E: Z% T3 L# T+ I* b6 Y
trade-money-total/ d& F& v- r) x% H
;;
与当前turtle的交易总金额
% X0 z* @; K$ J; J( D0 h* Slocal-reputation7 f5 ^) e  O. \! Z, l
global-reputation
2 ^; i% K6 i$ R& x2 h; @credibility, R) A4 J; H$ J0 `' r8 L
;;
评价可信度,每次交易后都需要更新
9 ~- D  e( u& ^" d. Ncredibility-all
; u8 g& Z, ]2 \: S- S4 p6 z;;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. q- c/ X* \% N" s1 q9 p- Q

7 A7 c1 \3 }# u$ n9 V;;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
. K8 ^5 Q% j9 g) Wcredibility-one/ O$ Q! [& D) ~% p; a0 W9 p
;;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
, t* I& k- t+ H. E# w' b; @) F* Pglobal-proportion
1 J2 J& S5 B' h% ^) F' D0 Ccustomer& @# F/ V; q7 S! d7 l4 L* E
customer-no
" M( R3 b. f2 S/ C# {' dtrust-ok5 L7 x4 `: q8 T3 C- b
trade-record-one-len;;trade-record-one的长度
0 o  j) Q" A1 x3 B5 J2 @]; F& X8 G+ h( ~) m8 I6 e" @# i. A

7 R4 q/ u( d2 |' `4 F7 b6 A2 w;;setup procedure* Q: L7 _$ j" r% l$ J
* l" L  C9 W( j( ]0 g
to setup
  a; i1 Q1 y$ s, F: u
2 l3 z4 }0 r. O' b: Q/ gca

  [: o& V: q. s6 @
1 d1 \& [& t; ^2 |% Hinitialize-settings
5 P4 A$ ~. h; T

( ]( f" _. q: S: e, r; y3 z1 `3 d1 Y8 F  ncrt people [setup-turtles]

" v' p5 w9 {( n' y! E) |! C. w* C6 x. S# \
reset-timer

: C6 e% r* f6 r, V$ n8 e6 l# G( y0 R2 }& m5 {- W/ G
poll-class
) ^4 Z. Z# [9 N  S& P

7 J) u6 Q) s; g1 ksetup-plots
! [/ _4 ^( N$ S3 A

9 }* W. n* I! Z( K3 R$ x% ndo-plots
. u$ d5 |% B8 y
end' x0 X. M. M! j; k0 i
6 y4 P& k9 ?; z) ?
to initialize-settings
5 L+ b1 l3 v5 A$ t! f- H! o. k) K: E5 T3 G
set global-reputation-list []
0 y2 q. f8 P8 n  `. V, U! M/ J
9 p6 m8 S' N# C2 t
set credibility-list n-values people [0.5]
" v! n' w: z3 a- v
6 A( ~$ J8 m# K  f( v5 H
set honest-service 0
, ?- K1 ?0 c; l! q: k: E
+ {, P% s3 @2 V+ I' r
set unhonest-service 0

/ @/ R9 X: o4 j4 h/ n7 P9 }
0 d" n5 m' H9 i- {' s( Fset oscillation 0

3 T6 x3 z  U" g  [* ?) i& N8 h- Q
! ~" G( _  |9 P; Oset rand-dynamic 0

3 u4 t  Z/ H" B* m1 `! X8 l8 y. Zend
. y* ~% d# y$ [' t
" i9 i. M$ K/ F* a" n* A7 O& d9 cto setup-turtles
% G8 I  [# z3 D2 Oset shape "person"$ t: ^& d3 g- G- t2 V; M
setxy random-xcor random-ycor
" l- R" v9 {" j* J( l# ^set trade-record-one []
9 X" y8 [; P; Z

0 A, n6 I) Y* aset trade-record-all n-values people [(list (? + 1) 0 0)]
  S+ B. B$ g3 T

. D; e- ~. R; w% d+ i7 B- [set trade-record-current []! Y+ ?; D- S# _3 o& O; l
set credibility-receive []
1 x- F8 G% [' V/ n2 S/ J7 k& v: Oset local-reputation 0.5
' z. B5 {; x1 U# }' g. p; Xset neighbor-total 0
4 L2 h$ L$ k4 g1 r2 i! f! w! q+ l* kset trade-times-total 0- F+ g+ J. H' p% h9 \, F5 ?( k7 K
set trade-money-total 05 w' d+ P/ b- Q  o$ \
set customer nobody
( b7 J. M  }' l& h! t" xset credibility-all n-values people [creat-credibility]! y( z$ U; e; F- `5 g( t* t
set credibility n-values people [-1]& q- d: ^7 m. W' P; P& y" Y# @7 N
get-color
  i2 i. S6 v, }* j, o& D3 V- a4 {& m

0 P1 E- a/ M/ f9 _9 D/ M9 Rend) K4 j) _2 o( B8 b: H" F! z

; w1 u0 k4 k1 p! |; mto-report creat-credibility
4 q8 _- L/ z, G! ^/ [report n-values people [0.5]
' m7 J* B  h6 v( r2 M9 s( c* Lend
; q* J. a, b0 M5 o. o
- V' Y% @% N$ j( T1 W& o. e2 `to setup-plots
8 m- W+ j) `& {/ q. p
1 d+ G. |0 n1 h+ e: M  h) s: iset xmax 30
8 F( w; h5 ^% \5 }7 ~

% b4 H. M; Q& w; F, x5 y: k2 g; lset ymax 1.0

* ?5 @: e$ Z# u9 u* @
% I( U8 N0 x" Q3 C3 w3 T8 ~clear-all-plots

% i3 {4 v4 ~6 I
. B. Q( Z* t* _- u; b  n  usetup-plot1
1 Q% ^# t: ~0 l2 J: G

* I* J' z+ N; l9 g# |: B# ?setup-plot2
" l8 o) q% s& g8 o0 n

4 Z1 Z( d9 X9 i5 Dsetup-plot3

4 Q* K4 I- F' ^7 R  aend% A, B) b: i' j# h
- n3 u2 q0 c4 G, v% P0 X+ D- M) m
;;run time procedures
! H9 i0 j& P3 a; c5 g: ?
: R7 d" t( T5 a- p# @. Vto go5 c3 `8 ]1 m/ k5 D
+ x1 V' B& Q( p2 l5 B4 x& Z( X
ask turtles [do-business]

$ @- b& U* L+ T& Cend# r5 E; n, v: w6 y5 H7 g6 V
# z! S% k0 x# S# H3 W5 s8 a( q
to do-business 2 [$ c& j+ X1 @, M2 T  L
" P; d( W# A& C# V6 d/ e

. k( a$ t' g5 P% a: Qrt random 360

* J; z: Y; G7 b/ L$ [) M, v, C+ o9 t8 E6 |
fd 1

: Y( Q0 ?0 o0 N* B  v" t. n( h6 K  u! T; S: P+ n. L" `( x
ifelse(other turtles-here != nobody)[
! e0 `3 b1 K, ~( ^- x* K- k9 U
! p) ?$ F* @: K$ U5 |1 j% o
set customer one-of other turtles-here
% X% i  i, ~! t/ J9 L: Z

% j% l9 Q" @, V$ l;; set [customer] of customer myself

; \  b) r5 B# d6 _: I8 K0 Z$ f+ B' D) `) u# d9 k& G* U
set [trade-record-one] of self item (([who] of customer) - 1)1 q/ r8 c" y3 B* r; g/ J
[trade-record-all]of self) ?7 g( L0 q) U% \
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
3 j) q! K3 p: ]8 L0 Z! ~" \/ R  c

/ k- L9 w) Z8 z4 {4 J% q  M; k- Vset [trade-record-one] of customer item (([who] of self) - 1); E2 y5 u9 z9 O$ P, V/ `: K! B
[trade-record-all]of customer

* a/ ^$ w3 x# F) s4 y6 E8 J. M! s* i, m2 X( x: p! x7 d
set [trade-record-one-len] of self length [trade-record-one] of self

" H( e2 Z4 w/ e% T3 f
( ?/ B- q! Y7 c. K# Y1 T9 E# aset trade-record-current( list (timer) (random money-upper-limit))
; R+ e4 ~  F+ I% k% P- d/ H
: i# k- Q: [3 y
ask self [do-trust]
' D* d* s+ }5 Y+ ^+ k;;
先求ij的信任度
' t% c9 E! c. u0 j. s& r
% ?1 M7 k+ Y6 c; s/ Lif ([trust-ok] of self)
" D- ^+ M; X. |8 N' U;;
根据ij的信任度来决定是否与j进行交易[
- M8 j0 |5 K" o9 Z& \ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
0 l/ {0 e( B6 |- c$ g9 e. G% w7 V; [; w
[

+ Q! Z4 p/ |* [9 ~( o) E' P9 `: k7 s- O" h7 n; W% H: B0 L/ y
do-trade

" a9 A6 j* p. I! K9 L' l+ t! t1 P
1 d8 @' g, l+ O$ u, Fupdate-credibility-ijl

* _, `3 C( O* G' W8 T9 V
6 a% v4 F- y4 V6 @update-credibility-list
. J/ y0 L8 P9 v& T/ k! a/ s0 t

4 s% D' J6 h. X+ j- |" Q! D. }1 M' I  G- h: f
update-global-reputation-list

- D7 O* ~/ H; L4 @1 y1 ~  \
$ Z- U% a. z; Y& e8 Q" K( ]poll-class

& ]3 q' _. z0 V, G- K3 Z- y  T! q0 X
get-color
! S- f4 \, o: A

3 H3 i6 X  l4 s8 z2 ~: d]]" F& v2 D- g, ~" b+ Y# B

1 B9 g3 l$ e( k" t6 b;;
如果所得的信任度满足条件,则进行交易
3 p9 o) W3 F/ |6 l4 T4 n+ |* [: n4 b
[

4 C4 o, u8 ]: f
/ E& j) M9 }& @) t* u/ E4 t+ Urt random 360

& Z- J( P, a) x; Y# R! K9 ?+ s$ ~
fd 1

" n+ M4 A( S+ _3 ~* ]) s0 J
4 N3 q) u- {1 X0 S; S9 k% n]
+ |0 D) U6 W( e  f
; C5 N  w2 l! `2 k
end
  o- ^6 s6 V+ r4 E0 c/ ]8 L8 h% L
/ G* I5 i0 V; l
to do-trust
# T4 `$ i( M( t" T5 O7 O8 x0 ~set trust-ok False" K6 w1 n# X& U* \+ j- A

# y! l! f) D+ x2 `3 X# T: k/ }
3 y# g8 J2 w" N! X( A4 N
let max-trade-times 0
6 {5 X9 ~8 V, k0 V9 Z# Tforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]- L# ~$ y" V4 A  {8 Y
let max-trade-money 0
  [& f( k1 f# P- Yforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]( u9 O* p2 M: C4 e% Y8 ~: i. x
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))* ]* D" i$ ^+ d0 P' o& H  z
3 C! U" t, E& D0 K
3 [& ~. R9 Z) W# K! @- g; K
get-global-proportion+ x. i/ _! e# P% L4 C7 v
let trust-value5 W: o/ K( s8 R* |
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)
# P- \5 |! |3 r4 {- F7 M& S3 v+ A- q
if(trust-value > trade-trust-value)* i  t" E: N, V# }% p; e) b1 s# l
[set trust-ok true]8 I$ o0 a. r8 c" |
end/ l6 V, K. n8 U5 j6 a- z$ i

. {7 x0 [/ P4 P% Z2 W/ _/ Dto get-global-proportion
* ^! m' \" y9 F; Fifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
" z1 K9 a' z# L' F( O- u[set global-proportion 0]. ~4 `& ~2 Y3 n' Z: J
[let i 0
# `! |* \  W2 O4 \( x- m+ ^1 ulet sum-money 0
, X7 n; ?7 A' cwhile[ i < people]7 Y% N2 X1 h2 J, c: E
[
/ @% w( N) h5 d# D9 N# Fif( length (item i
, E) t2 P- ~! a[trade-record-all] of customer) > 3 )
- v) @; z( F2 x4 M+ n( C0 u4 Q
[0 B  Q" ^: l* t) Z+ d
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
) F0 e/ L3 [# d: M]9 k: D6 p4 t6 \- l. C
]
9 T3 i5 i. T6 B4 {; Dlet j 0# R# g7 i$ }/ b% ?2 l- k. k
let note 0
$ m' z0 w  h* \1 W7 T" C4 a/ d9 nwhile[ j < people]
5 w8 X0 S; y% F7 J- c. D[
& P, K8 k8 o% t. G8 Lif( length (item i
" c$ }* Y/ u0 w; w[trade-record-all] of customer) > 3 )
# E" z7 w) S/ y. ]% k0 g
[
& B4 J# \0 ]5 c% n3 ]0 g0 x4 t8 \* n$ Aifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
" V. V, ^3 ^7 U# V[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
3 W+ _' S# W4 J# W[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
$ d$ t& v- D0 i% A; i5 m& M4 R& H]
! v  V& G- @- r2 [; t% B& I]
) k+ \0 H; m: R' |  Z* I* r2 sset global-proportion note& `: K* w# \$ c, I8 T4 s* o: q
]
; g# \1 l% S4 P6 U7 |* Y' send
+ s* Q5 h- W+ b! f. ?( `6 M' X4 I6 B) `
% W- _* E4 r/ |; A7 O7 pto do-trade3 T0 R( G' c& v/ V
;;
这个过程实际上是给双方作出评价的过程
( v# p2 a8 s' N; o" S, m+ Fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
  h3 e+ Y$ g( x% J- C4 _set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价: m2 p' h/ o! v/ A- J+ ]
set trade-record-current lput(timer) trade-record-current
, {- L* y; n# C% I( h0 |" d% `1 t;;
评价时间5 z  \* S, v" u  e2 M
ask myself [! z) V. ^$ m( E1 t% `1 V) s  z: K
update-local-reputation: \& ~9 [: l, D; x
set trade-record-current lput([local-reputation] of myself) trade-record-current. r" M* z7 o7 [# \
]
8 p! d) f7 M* O! z1 f/ Nset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself" N* J" B3 H+ U
;;
将此次交易的记录加入到trade-record-one, c/ r6 N+ V8 d6 }
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)% J. j9 |: ~4 A: @6 o$ a
let note (item 2 trade-record-current )+ ?4 ~! A. g1 i2 D7 a! D6 N$ p/ P8 b
set trade-record-current2 B* D: Q. c2 q
(replace-item 2 trade-record-current (item 3 trade-record-current))
7 J- m( X7 H4 |0 h
set trade-record-current: A+ X, ?+ J7 t
(replace-item 3 trade-record-current note): R- x3 v' _( `/ w% d0 _

1 X8 D6 W0 l+ z) {

. y5 U; e1 B" M  Cask customer [; y# k, ?0 k. r& U6 r5 R6 ^: x. H/ E
update-local-reputation( d, x6 l) |4 L; ]2 a" Y4 P
set trade-record-current
# ^* p/ }7 ~3 Y+ D(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
) ]6 _2 e2 L! d8 C0 y/ X
]
4 U! M0 A1 }, R  o8 I- ?" R: o$ x$ i, t$ d* T' N

+ o) l% Y/ u: T0 k: N: d6 Aset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer) r/ T4 z( f4 q9 C3 f5 t" D6 E
- r( ~  X7 A0 H$ t5 H
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))1 P. I( a* h$ k
;;
将此次交易的记录加入到customertrade-record-all6 K, U6 n1 N$ r; `
end* t' Z1 n$ _. C6 a( u% [' N/ e1 q

* `. z$ {7 l! J& \to update-local-reputation8 {- t6 I0 [7 @' ]) L0 y
set [trade-record-one-len] of myself length [trade-record-one] of myself! Z7 \) M6 @5 B' @( ?) s% j3 o% o/ D
4 H9 V& m7 i+ y5 u) ^* q2 H
# j7 d$ q& f+ T6 Q5 o
;;if [trade-record-one-len] of myself > 3

. t, z8 Y, z& Z3 v7 _* E" {update-neighbor-total0 n/ [  D. C# B! g
;;
更新邻居节点的数目,在此进行2 c4 [5 \. S  ?& g( L3 O1 O2 B
let i 38 J* b7 G) j& U2 w( a5 M0 Q
let sum-time 0
; j' m* B8 a% g# K5 z  uwhile[i < [trade-record-one-len] of myself]/ v* D) W3 W) z2 X0 ^5 q
[
+ r! r7 d: B$ P) V" c/ nset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )9 |7 o+ x3 a0 T6 n+ h6 S1 d
set i
* p# a/ B0 L+ ^4 I) r* b5 h' Q( i + 1)
* `" X* P4 Y2 T& j3 w8 M
]3 L# n& K4 M7 ?5 Y$ W9 y, R0 H
let j 3
( C2 u/ R. @* R- p' b* ~9 ilet sum-money 0' ?5 ~8 M+ |2 X& |! C& M
while[j < [trade-record-one-len] of myself]
. I: ^9 \# o& L: C1 u* }[& y% h& t2 M; s5 i
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)
. W8 o. W+ a: |  u9 xset j
) q. F' M2 O) F+ B( j + 1)

3 Z" J" R" A% J& f% g]
0 T) W* W- ^% U5 ?3 f: C8 Qlet k 3
# C. g& \" O' K2 {: R$ x) c; g5 Alet power 0
& e- ~9 K% V7 M. _3 g) z/ u+ [let local 06 j6 p: g5 d4 x4 ]7 d9 _6 H" Y8 M
while [k <[trade-record-one-len] of myself]; u) R8 X+ L; q7 K5 u* c/ d3 I4 u
[
, c1 @& V/ M6 ^* |  D' W" w4 dset 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)
' Y5 T1 G3 ?- x" |  m4 P' `set k (k + 1)3 o; B9 P& u8 L! U4 r% }
]
# U. @: T, ^: a$ e; r5 Eset [local-reputation] of myself (local)
4 F9 Y: }2 |5 [! p9 T3 L0 Gend
) Y; h$ S& p/ t7 L! r5 @0 c
( N4 I" J4 d( I6 u+ D) z) R9 Zto update-neighbor-total
# @* s  l0 X) r9 ^( v* q( c9 _9 \+ [0 a+ \6 M7 v
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]$ e/ ]0 a9 ~$ M  W6 C
$ [4 k! F7 A# q

; p0 A" ^  s1 L8 ?# Y' nend. z( M( O; ?0 t, o! B# i/ C

, q1 Q6 K" K: }. X3 s/ m; W  _4 z' K/ Ito update-credibility-ijl 8 U% M  i! Z) C0 h/ ]

8 k( q# i2 n. O2 d5 D;;
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。
* A4 l/ v, M" [( q! a) olet l 0
* h6 v' E; [6 t% b: D8 Pwhile[ l < people ]9 l# k* U6 c) C4 |0 z
;;
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
) L1 I4 R5 N( X& M8 j[$ v0 [- w3 }$ G4 r& i) k
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)6 k& I# {) ?$ C
if (trade-record-one-j-l-len > 3)( U, k9 t4 T* X: D( O
[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
- E4 e$ @- ^2 e8 ~6 d% o9 blet i 3
& j1 I8 o: C) glet sum-time 0
3 R3 [( @( w- t0 }8 E! @while[i < trade-record-one-len]
  T- h3 V! X! L[
; J# v) Y$ X) n9 [0 |. Uset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )- x; ~" e# }: z/ B. O+ n8 s& L, l
set i
& F* `. ~1 j. y& }2 r( i + 1)

; X& m6 _: m2 M: g]' U- n1 t  Q5 a) J# g, K- i7 n: Q
let credibility-i-j-l 0
3 O3 A. s4 d* Z8 Q% t' y;;i
评价(jjl的评价)$ h5 j  d& q, E7 c/ D8 S3 r
let j 36 R. I& h; g' M
let k 4; D/ v3 W( m0 g) [
while[j < trade-record-one-len]7 \, l- y& r3 Z* V8 _
[6 a. G- p: C) d9 U: u# I
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
# e. F; n0 Z( v) Y% b/ H8 sset 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)" B; j6 I7 y( z! X+ J; K1 b
set j/ E' X0 f# y: {$ b5 R, n6 ^
( j + 1)
9 T* ^. f" u% W. g
]
0 A( |6 y0 @% Z1 q) a2 b- M3 ^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 ))4 d2 x/ @" P, L: u6 z# l

3 \' E$ u' W; }8 L( c' A) l, {
" u2 K/ Z+ u5 o# o1 F: A! m+ E& q  x
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
7 `- x# C- o# p; I: K* X% `7 l;;
及时更新il的评价质量的评价
: {4 C0 W4 ]6 L% Jset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
; A7 {$ a" Y( R8 C  B/ `set l (l + 1)6 \5 R' T7 D$ M  M" ?4 F
]. t1 j3 l2 K, N" I- q
end
/ w1 `( V1 o: b5 q. N! ?, f+ l
6 T% r, m$ ]3 i) Z: Fto update-credibility-list5 W2 d$ |1 }. j1 H1 G/ T4 ^. i
let i 0
6 J' J  s9 D, }/ o+ p$ U5 o- t/ m5 @1 Ewhile[i < people]9 ?% s" x$ j) u2 Z) @+ `, d
[6 h6 ]! }+ O$ M! f% s) s1 d( e; w
let j 0
9 P2 i% R; Y8 V2 Qlet note 0" E0 l# k* t1 _& f4 X; Z: N
let k 0
7 N1 E! o9 ^  a, Z;;
计作出过评价的邻居节点的数目! K. k' Z# K5 B6 U8 a" A* {" V9 q
while[j < people]! M0 R% ^; E. d
[6 P$ P! D+ d. G2 V
if (item j( [credibility] of turtle (i + 1)) != -1)
1 G# a- y- o# x. X. W) @;;
判断是否给本turtle的评价质量做出过评价的节点, G5 F5 @( m7 X" K9 K+ O
[set note (note + item j ([credibility]of turtle (i + 1)))
7 c; f  j1 m; j5 T( Z: G  M;;*(exp (-(people - 2)))/(people - 2))]

2 W* z" m; Z( R% c9 v6 w7 dset k (k + 1)+ C: A4 N8 R3 K
]
8 J0 W) \% t6 e/ Xset j (j + 1)8 z" @: n, F, v% M
]+ m  o, ^- W) H; P3 T7 K! m5 R7 x
set note (note *(exp (- (1 / k)))/ k)
" P7 ?9 D4 M$ Z- F! R( ]# s6 I) b3 [set credibility-list (replace-item i credibility-list note)- M+ D5 R1 u0 P- [
set i (i + 1)) \- x4 O7 u0 ?; N/ T8 Q! p1 n8 L
]; l- T" M4 v8 T7 [; F/ m2 P
end. h6 u* X5 l% ^& r  }
  I0 I5 W$ F  ~' b7 a: T: [
to update-global-reputation-list
" |$ u5 ?- K9 H+ q6 B* _let j 0, E$ L+ I: X  E7 @+ n* L
while[j < people]& M2 T$ g5 Y5 l0 e7 y4 H
[% I0 N7 ?6 ?( q  Q7 V, Z. D
let new 00 L/ d2 H9 S% X, h& W
;;
暂存新的一个全局声誉5 `1 D9 t1 N5 X5 |& m
let i 0
! P. e; K& |+ qlet sum-money 0
/ `9 i; g2 y; \8 ?+ Blet credibility-money 0
- Z0 N6 F# @3 j4 s( G/ Mwhile [i < people]
1 z( t, K) u& ?3 C* ^0 B: w6 H[
; [$ p  j% c3 \# K0 dset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
- v4 N9 \: H7 i% @4 ?/ Bset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
1 t0 j7 @" X7 [1 {/ w4 aset i (i + 1)
3 z& i/ |( b5 E9 y2 w* m$ o+ q]
( N2 J3 H8 v6 h9 m5 D3 G! klet k 0( x8 ]% s6 z' C  N/ t; l5 C
let new1 0
# X- `: z: f4 Q2 mwhile [k < people]
) d' L( P  L0 b0 r) ]* V: C. y[
. [. O) B" C' k1 f( X9 n. k' o  yset 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)$ l9 o# C( S  r9 D- l. @4 b1 Z
set k (k + 1)
3 J7 \" z" \$ q9 v]
* I5 z6 p% x3 ~* h  ^set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 1 E3 n- d1 E( D% c# |
set global-reputation-list (replace-item j global-reputation-list new)
& k4 a) H7 J3 A1 p5 k! gset j (j + 1)
4 s1 m) I* X) O" J* N3 {1 j( f]3 ~; j* H3 y/ _' {' r3 ?
end6 M- B9 z' U+ K- Z% L+ c

0 L0 _! K, h' k* `. Y/ A8 `4 H% m* a, q! X: h

# b/ }9 _; C2 v/ N# G% sto get-color
1 U# X% D! n8 H- x8 q" K( M( B6 {) l( M
set color blue
  o* [$ w$ h% C7 o" e7 _
end
0 Z$ V: u: h% H# x* x! v
5 C# Q1 J; d6 z% [8 D1 ?* zto poll-class
8 Z2 R9 r  n# f+ L; v- oend) T3 f* {  z6 c' p" d6 C) `

% n* U$ t0 H; `1 P; t1 sto setup-plot1. _. p) R  p" _4 `8 L4 p

+ K% ]+ s0 t3 K* a4 `set-current-plot "Trends-of-Local-reputation"

8 `; X' k  q8 l; K8 Q! L) m% S, O7 G! Y" c; g( T
set-plot-x-range 0 xmax
; v5 O8 _4 b- S% |
7 K9 p$ R  [5 j* \% t  j  k
set-plot-y-range 0.0 ymax

8 U3 B8 g' S9 E& pend
9 V9 \/ s6 C- t
( n7 F8 O% T; ~% d( R! eto setup-plot2
1 Y4 P  w+ V9 C
* Q( p. l, X6 a' M) l- Nset-current-plot "Trends-of-global-reputation"

7 }/ s6 t. K, @, T, Z
$ ]9 N" c$ }2 l6 Z/ k: Z/ wset-plot-x-range 0 xmax
6 s& @2 \5 w( @/ e# h. l& j- _
: E& m" h: I. i1 L0 m+ ?
set-plot-y-range 0.0 ymax
2 X, b$ V/ t5 i2 w% K
end. X2 K% T' L3 N" `9 c  o9 u" M4 e

; G  j$ U7 D/ {to setup-plot3
- C- W+ }" ]/ g* @' u" g4 Q" N, Z6 h4 J# `7 ~( L
set-current-plot "Trends-of-credibility"
/ @) ?3 H, `# U9 v8 \6 I% k

1 U5 k/ \! P) O* ]3 n- @set-plot-x-range 0 xmax
5 q( _; |- E6 F0 J
  V0 e/ O5 w8 J8 _. r8 ^
set-plot-y-range 0.0 ymax
  H0 ~# a0 ]* q* v5 ]4 A. W
end
$ O# _& _: I. \3 h( h
: J8 |& w$ x9 _3 X0 Y( fto do-plots
8 t. G0 {4 \  [4 t9 ?set-current-plot "Trends-of-Local-reputation"" V0 W% O3 i9 _8 `* Z! j# j
set-current-plot-pen "Honest service"' n" V7 j% g0 ]6 A5 c7 ?
end1 W* B: e" m# j8 ^: P

1 B; o- t# T1 r8 g[ 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., H6 E/ S8 n4 ]! A, m7 T6 U! ~: q" y

+ I& E  g9 V# ]# d- f* @( W; h! u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, 2026-8-3 12:09 , Processed in 0.022279 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