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: 14581|回复: 10

[交流] 关于turtle的使用问题

  [复制链接]
发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:; N# U. g$ i2 i$ e) @$ `( I$ F; `
to do-business
! {$ R2 k' }1 G8 d rt random 360
* g2 F. c5 r+ A# C fd 1$ [0 }* N  ]' s
ifelse(other turtles-here != nobody)[6 `  Y( u! r: G" C, [/ y$ Q3 i
   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.
# |% q" s- r2 r* `' |   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
* U& J& ]3 G- x   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer- f# j. H; V/ ^6 t3 b! |+ \
   set [trade-record-one-len] of self length [trade-record-one] of self
# h* F+ V- y4 Z2 R- o( E% P   set trade-record-current( list (timer) (random money-upper-limit))' d- w5 v' K) f6 e

! G& _/ w4 ^. ^1 z7 d问题的提示如下:
% A7 b1 M# G3 E1 i3 s/ F
  z1 H8 k( }1 d. \* O- Derror while turtle 50 running OF in procedure DO-BUSINESS
. y3 O2 C$ }+ B5 H% u( a0 B2 s& ]  called by procedure GO6 V& e- F& l/ g3 X
OF expected input to be a turtle agentset or turtle but got NOBODY instead.% l8 F* A! C8 L) E( r- Y
(halted running of go)
$ L& f; V! X: o5 A. s# t4 W. \/ I$ z5 @9 n1 d* ^6 N
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~~
( l4 h  H1 u7 }% D- T2 n- Y. a& }另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

本帖子中包含更多资源

您需要 登录 才可以下载或查看,没有帐号?注册

x

评分

参与人数 1仿真币 +30 +2 收起 理由
booblu + 30 + 2

查看全部评分

发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教% N0 p9 P4 ~8 T+ t) K
globals[
2 C6 p7 q& t( P/ @1 Y0 _6 Jxmax
" q% \0 \7 B. u. e3 a0 _/ T& L$ Zymax4 T- E1 e* P; i- r' x. b% e
global-reputation-list$ f; V5 M2 V. ~+ g$ ^6 i

* V: p$ c+ v3 r; F8 V' W;;
每一个turtle的全局声誉都存在此LIST8 S) N( A* w5 L+ _% x
credibility-list0 E; m) ^7 I$ d  e
;;
每一个turtle的评价可信度
& J8 J+ V1 f: I9 ?2 s# Mhonest-service. W- O. @8 |4 _# z
unhonest-service
' F. Y; Q$ N) d: y/ t. Goscillation
4 Z2 Z& _; h, l; j0 K# ]+ mrand-dynamic
+ Z3 d4 T- ]9 {$ L. D3 E$ ]5 []
; R7 B4 w# Y0 k
( A2 V! o) p) [turtles-own[
- n  d9 g+ y) [trade-record-all3 s% m6 z0 o% R+ `& X# z
;;a list of lists,
trade-record-one组成1 M& s9 Y4 ?" b0 Z% I1 J4 }) e
trade-record-one
2 S8 q2 Z5 Z! K  `;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录3 ~9 s( U0 l; S/ I
6 D% P  H& o; Z" d
;;[
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]]
# e3 b! z2 l9 f6 x/ R' B2 _" Ctrade-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]- L2 m8 y  X: Y
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
- c, l  o8 Z5 ?' Gneighbor-total
5 P3 K$ V! h  m% y4 A; D;;
记录该turtle的邻居节点的数目
7 J, y" x" T/ o% `+ [3 Ltrade-time
) p! ~0 K8 {" g0 A% s;;
当前发生交易的turtle的交易时间
/ S. I  c: B' W& k; Vappraise-give2 Q/ d1 V2 V' ]5 u! w6 u/ q# y
;;
当前发生交易时给出的评价
& W3 q1 Z5 k* c& g& X0 {3 Z6 Jappraise-receive
2 `! x1 i4 R. n; a- }$ R;;
当前发生交易时收到的评价  a' _& E1 V0 M% |
appraise-time
5 u7 [9 m7 W. o& W2 i;;
当前发生交易时的评价时间* A8 C& @+ H7 J+ v
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
" q& h# Z: u- Q1 S. J/ vtrade-times-total
4 c' t6 l. G; x7 z6 K; v7 D4 j" U;;
与当前turtle的交易总次数/ v7 r- ?( [; q' ~# u, G% R5 k
trade-money-total
/ w2 L  p9 }) b;;
与当前turtle的交易总金额
5 d7 i- c( W$ ?4 z; Alocal-reputation/ m6 s# n) z3 y/ ?
global-reputation; c2 |" Q# z0 l9 M4 W; d! k
credibility
/ K+ k* p4 H' y" \( H8 {( o;;
评价可信度,每次交易后都需要更新
( Q! L# `( K( R0 ~+ L/ b2 k' jcredibility-all' [) p" b9 Z5 \& m- O
;;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
2 o+ _# p' X( Y- f5 ]; ~. M0 K+ {- O% _- N
;;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" l0 E! Z" `. M8 w
credibility-one) h- i% Q) Z% u0 F) n' B
;;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% L' Q# J5 y% t9 V7 o, s
global-proportion4 s# c; a# T$ [  E# t
customer5 J: x! T- u! b' v
customer-no% J2 Y1 E' G1 q0 V/ j7 p( [$ ~
trust-ok
8 Z5 J( H. h8 A! `0 L! Ftrade-record-one-len;;trade-record-one的长度
( |' f1 Y  K: V3 @6 w]! `. z1 m0 n0 D: B
2 Q: ]+ V. k' p/ s/ y& G
;;setup procedure
# D* Z. A( O6 @. P
$ ~4 v$ s' `( T& I- h+ W( \$ J- Bto setup
+ t+ i- Y. @" F& v$ u3 `
4 z0 e& \& g4 J5 _ca
4 L- h) k, Z# a

# h& v3 W7 c2 A$ N$ F2 c4 U6 ginitialize-settings

" r# t, @- J, [9 T  l6 g. ]; y( P1 [2 h
crt people [setup-turtles]
$ M$ k* w' H9 n8 t
, V- {# A  r* a
reset-timer

# g( S2 y6 B, F. M
* K  O9 c5 x, o: }8 |" Z+ f  ]1 Fpoll-class

9 ^# r: b  R7 e, ^
" @5 ?' i' F+ L* o, d; n! L9 S$ vsetup-plots

1 R) T2 {/ K* E% A9 B& M
6 j# K( O+ ?: |& r4 z1 y, cdo-plots

2 f; X! n  K! Q( b' }/ qend
' u$ A: ]5 p7 A( j8 t% g- X  P* ?, L& ~  v5 K
to initialize-settings
- m! X& `1 M" i" a, ~
3 I+ F  k0 C3 H6 M( cset global-reputation-list []
5 |7 f. r* Z+ ^: N5 I1 F7 F
' }1 U6 z8 i/ E
set credibility-list n-values people [0.5]

! h' y- N" H% r; ^4 u$ H0 [
+ [5 h" h% ~  b  Q$ \" ?set honest-service 0
) ^$ Y9 }1 Q5 M
+ l* q! P0 _$ `7 o9 x) p
set unhonest-service 0
: G6 {9 O: E' b2 l

/ w9 O/ M( Q0 r% l- Y, w$ k! Fset oscillation 0

* x7 C3 l+ `* P' _3 I0 J9 e/ S: l  \% G  D' ?9 q' ?4 c$ F9 y& f
set rand-dynamic 0

: l/ ~2 T1 v) c% R/ y: Iend
, ]) |- ~0 o) O' W
; N3 H# I* o+ o5 Y0 n3 H& zto setup-turtles
( p/ N/ W7 ~4 l% t# u8 k& F: qset shape "person"
# f% ~; b$ {4 m# I9 D0 O7 T* j8 Msetxy random-xcor random-ycor  N1 S* \( Q7 o0 F
set trade-record-one []: q0 x- J$ M+ R6 u1 w1 o

& Q+ j2 Q& W* |; zset trade-record-all n-values people [(list (? + 1) 0 0)]
2 J3 B  A2 V: G& V: O

+ [/ R& p) u+ D8 F7 ?! k' O4 \set trade-record-current []4 Y) [9 y& y3 i6 j: i* R0 j: L
set credibility-receive []  J! M5 m) V( \
set local-reputation 0.58 \  u! k% ?8 U8 F3 P
set neighbor-total 0
) Y! x* t+ s: ~. _1 B9 M" Vset trade-times-total 0
# ]$ X$ }; X7 K/ B8 \. nset trade-money-total 00 S3 Z3 ]. t. Q, r1 I* f
set customer nobody! v, v# C8 ^1 @6 Q1 ?
set credibility-all n-values people [creat-credibility]% C8 C0 q. L6 a; o
set credibility n-values people [-1]
! [/ ?& x8 A2 D5 U1 F9 g: wget-color; ^2 e& l, _2 p9 }2 v; z

4 c" z" z  l- cend$ w8 }. d5 z+ M' m2 G- J
! K! `$ s" J+ [: P& I
to-report creat-credibility
1 I0 J; ?: X& G) zreport n-values people [0.5]6 I" g' E1 n, P( @$ J5 r
end
  T( ~. M  `; k( [. \
' e: r% {  a4 N& I% B8 H" Z. P0 T2 Hto setup-plots
; s7 J+ P: R- L6 v  Z# Q" g; B
' l7 q" H" {) Wset xmax 30

: a" S3 u: M4 O+ Z( i! Y) Y1 p3 n5 ]4 J, d6 O
set ymax 1.0
' g  I  T* F+ l! p6 j6 K
+ c& P) t- }! S5 L7 P7 P! w0 T2 e
clear-all-plots
8 M* k& A" D3 |
$ `* ~  ^; ^2 J. c
setup-plot1
6 J2 L1 q6 T: b$ I. a+ Q7 b
  P! @! q. s7 n
setup-plot2

( `* Y* \- e& e* F* E/ w2 O/ z$ |7 m. g% L; ?% D
setup-plot3

2 i( d1 _6 h1 o% ?end$ o; Y2 s& x6 J( _. x
5 ^; m( T* @7 G8 j" Q
;;run time procedures
& I1 u) d+ I+ q  C
# s- i/ }. r( ]1 Mto go# }* N% h& H/ C  r# ]& ]
* h; _% ?! U* n' w, f
ask turtles [do-business]
8 l$ r; X# }4 [% W( `
end7 V( r* i" B0 R) @' f/ K

- @1 {9 E- p$ j" X0 c8 }8 B- Rto do-business & w- u3 L, `% K  D& z7 d

: D1 f) r; ]/ q0 f7 o% q" e( J* ?" V% f% x
rt random 360

' O8 o9 \, D  _3 \( ^; T7 R* o" r! _5 Y1 f
fd 1
9 k* y8 {: z& u2 L: q  @, e! ^
6 m- z0 O1 ~2 b6 M0 ~- l
ifelse(other turtles-here != nobody)[

$ t$ k. q# f  }, x9 e3 D0 ?. `, g
set customer one-of other turtles-here

: }% i+ {& M- L; Q6 r7 |6 B: |
9 B2 |* r. N% W' d;; set [customer] of customer myself

( c8 s6 q$ A/ w0 i
6 C) B) W) x! j3 j6 m8 ~; _. dset [trade-record-one] of self item (([who] of customer) - 1)
/ Y2 e* j* o5 k% |2 T9 K5 e[trade-record-all]of self
) u! q4 U+ t, l1 H;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
% N* ~6 C$ d: l& H% V

/ Z: k% v' T+ X) z' N6 uset [trade-record-one] of customer item (([who] of self) - 1)
  O1 k- n! O4 n0 t! N6 E1 J[trade-record-all]of customer

; ?7 p& e9 I. T6 W: u/ p2 f% e" b
5 {; `' |" e  Y& `set [trade-record-one-len] of self length [trade-record-one] of self
/ Z, t- w# s! U& o/ l! ?2 M; z
5 m: F. N" q! K
set trade-record-current( list (timer) (random money-upper-limit))
8 z4 r/ _4 q; k  t2 v8 r3 f5 o

" T" ]2 _, [: @' Cask self [do-trust]
: \( S4 p% v. [) _8 Z7 p;;
先求ij的信任度* i' k7 M# ^* h& B9 a/ S
7 ^5 R1 o% r+ A
if ([trust-ok] of self)
; ~# B* v1 M2 y# `2 s3 m;;
根据ij的信任度来决定是否与j进行交易[- `) K0 n- X1 E# E+ X9 e( D) m
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
% p6 l; e& H% a
" B2 c4 N( ~8 G5 N8 a; l[
. r0 G" D# U6 ~/ h
7 e: {" g2 S; Z5 Q  }
do-trade

; @4 Q6 D8 j4 R! k) @& B
  Y' z+ D1 W8 c# Q1 o  o/ Supdate-credibility-ijl
! F6 _/ R; t9 t+ N( F% S

: B3 d9 E7 j/ \% Xupdate-credibility-list0 H& \9 `; r% x) y8 }6 _' n
8 d" F$ V! f& j/ O9 ^- P

0 O5 F2 Q# @. ]/ Nupdate-global-reputation-list
4 T7 P! I5 O3 Q

! i  A! C5 O' h: \poll-class

- k: i& \& P9 W1 n' F/ `* k& B/ t7 K" j2 J# k7 |) P
get-color

; x" g; _$ u* C) Z
4 \% R. B( R' H! l- R]]
+ }* }! J+ E% |, |
2 u/ c; ~9 `. x5 p& ~, L5 N% @;;
如果所得的信任度满足条件,则进行交易
/ b5 s* z; [8 _7 U# ?- F& w
  @3 k; t8 {& ]7 F6 [7 x[

5 L+ c7 ^0 W1 {2 o1 w) G8 m9 Y
5 B6 z+ G% w0 M; f* w5 U2 E6 |rt random 360
! k! L; m% o9 H0 K; H+ B6 y( Y
9 S+ _! c6 P8 Q# V/ l  _9 M
fd 1

) U9 w1 c) z. G7 J6 Z) V' d8 N4 @  }6 Y8 {9 u- j# v
]
3 w) X( V* W/ R+ Q' I; ?  h

2 }1 ]8 M2 }. n+ m' f3 yend

* ^) m! }5 `9 m+ b8 n( N, @' I7 k' U
to do-trust $ w. K: R% F3 s4 ]$ M1 P& @
set trust-ok False. m2 P2 v: W- G

; O, p2 h* n! D; P% @4 @  L
& _: m, c, m9 X. {" B# Z& h3 M# W
let max-trade-times 0
$ r; s. P! A1 {& T" D4 e% cforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]& o1 A# f8 F0 c# ]
let max-trade-money 06 |; r% N! p" G; J8 U- a8 }/ b
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
- D9 u3 H  Y( Q$ f2 nlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))' E  t2 s8 `% g6 L8 y

* q* X1 Z& s! U7 U
8 ?# ?6 N" h* `* ^
get-global-proportion
/ S  A' I. J& z! |8 t. P/ Plet trust-value
* R$ K8 s: K- O* |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)

6 i8 V( A  a' Y; Mif(trust-value > trade-trust-value)% v: z2 {# T- i) L) _$ {
[set trust-ok true]
* O7 ?% d6 I- F1 E+ h6 w3 Lend
0 P- _( ~9 {$ }9 D; f: m' k8 v; @% Q/ M0 b3 M3 H  o1 ^
to get-global-proportion
: S! a, D# _* B# Pifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
/ }+ t2 l4 ~3 C4 l, f[set global-proportion 0]) Z8 D! b7 ]* U; v
[let i 0
& }: g8 p1 O0 Q4 M9 _1 Wlet sum-money 0( p8 O6 t( a0 {6 k& Y/ c# L" Y
while[ i < people]
: k$ E1 D* W% L4 z$ B[
5 h; X! |8 K+ Vif( length (item i
8 N& ]# H9 C, q2 x6 Q: ~[trade-record-all] of customer) > 3 )
& W9 `7 G/ G. t7 q$ F! ]+ p2 [
[
! x  _! u, T+ s& u3 s" i7 c. Yset sum-money (sum-money + item 2(item i [trade-record-all] of myself))+ N0 G# A* X) a1 p! }
]
1 r/ H; a4 N/ `; j* V6 Y]8 L2 O6 w* g$ s8 Y4 `) E- Q
let j 0
! s. `& d/ G( ^4 b* Ilet note 0
/ l+ x( i* O2 E+ Ewhile[ j < people]
) m7 w; f: o1 {7 D5 s+ x* o, p: D[! _3 a0 M/ a: {0 n% W( z, c
if( length (item i' k% V/ Y3 p$ X0 U
[trade-record-all] of customer) > 3 )
3 P- X% r) q0 F& Q" @8 ~! B
[
. H' v, \" w" d! }4 x1 ]ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1); g8 m3 y9 j$ h
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
: Y. A, K6 z5 _2 g0 _/ F2 v[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]6 D  H  v* K2 @7 k
]
8 |7 G+ J; `1 n+ W]
( d# d2 P% U' qset global-proportion note
/ @4 i; y4 U( }" a: _% |* W+ Q6 \) ?- _]
# B: L! U! f. r5 H) M- n1 v( K  w3 zend
6 m1 e# L; u8 k+ H. b5 c5 Y: z! j% Z( K! p, O" v7 j# o
to do-trade
* r* j' ~- _/ [/ U;;
这个过程实际上是给双方作出评价的过程& u5 F4 }1 _2 f' U
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
: L2 g8 T( k& F, zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价& {, r/ Q- W9 p( R- Z9 B( e- l
set trade-record-current lput(timer) trade-record-current
$ `1 r, S# [  V7 L2 v;;
评价时间/ K8 S9 {' m# }$ j8 R4 W2 T; M
ask myself [: c# F4 D" h  i+ m  g
update-local-reputation+ V+ A1 Y8 G- g
set trade-record-current lput([local-reputation] of myself) trade-record-current5 f4 P/ H+ u- x, Y1 t
]# Y6 M+ P% g: p2 B7 r! _( @$ M
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
, x8 u  t' D" \;;
将此次交易的记录加入到trade-record-one: C$ j) ]7 |4 u* N
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)4 S) a- g5 G& b: @, S' G
let note (item 2 trade-record-current )7 N$ T. R* @3 i9 y! a4 E
set trade-record-current1 ^* L5 T$ [# V: e4 j3 f; U& p( d
(replace-item 2 trade-record-current (item 3 trade-record-current))

( S2 @0 H& a# ?' r4 {set trade-record-current; T1 c0 f6 i( i
(replace-item 3 trade-record-current note)- W4 l7 j( D9 `
. Q, g; W" z& i. M  l
( X/ _: X% G: k6 k+ d9 t& [6 F9 g: v
ask customer [3 I1 Z: w8 V9 e) j
update-local-reputation8 y' l1 Y0 Y! g; B
set trade-record-current
! S' M( l4 C, `+ p: ?( q(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

$ Y5 K  G' w# X8 R# @]- z. c& E) C; X+ B

6 L7 X' j" h" r' l
2 ?2 h6 t. D! \6 m. ^$ ~$ l. w3 ~
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
6 ]7 f9 J8 o2 Z) I

4 C+ x/ q! k# R( a8 U' Tset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))6 w/ h4 f7 o# d+ p, {' S; W+ p
;;
将此次交易的记录加入到customertrade-record-all9 C0 i/ x$ {6 J! }* G2 o4 o# i8 f
end
) V+ m1 P- |3 ]; l/ I- r+ ^6 y: m+ @
to update-local-reputation. q0 C/ K) S/ D- t: N
set [trade-record-one-len] of myself length [trade-record-one] of myself
0 T; F! b3 P- @+ W; B  r
% T( O9 D( L! c( [3 z, F* D: k$ e+ i) l1 R$ _5 q9 i
;;if [trade-record-one-len] of myself > 3
! Y7 S2 `" ~' t: E7 a
update-neighbor-total
1 O) D5 e: b$ C1 \! d& ~0 O;;
更新邻居节点的数目,在此进行( y/ N3 K5 T0 K" Q2 b. T$ A/ d1 y9 L
let i 3$ M% A+ y: i* d% F( U
let sum-time 0
. \0 Y) O/ j: i, {while[i < [trade-record-one-len] of myself]
; R0 q' s( d! R1 s$ @[
: }1 P, X; x3 E% _$ l( X( Kset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )) E3 P  L9 q7 f0 s1 W' F* @! X
set i
  K  ^# L" n8 C& e) J( i + 1)

5 N% K/ Q, ~( j" _/ O: `]2 Z: T; z' o; b, B  x  m) Z* T
let j 3  c2 F4 V6 x0 Q
let sum-money 0
3 {# l+ J; x0 ~2 dwhile[j < [trade-record-one-len] of myself], w4 r& Q2 h9 d$ Y
[
1 k0 W: i! k& v9 r, e; x9 H: u# Wset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
2 s: M3 P$ A+ {0 H' {set j1 w6 L+ m  W4 e
( j + 1)

  G4 B/ x8 M' D]
# d. g, {0 k6 H: Qlet k 3
2 }1 k. D$ T; klet power 0
7 V7 x4 x) R* V5 V: e) Jlet local 0
% {# V6 T% b/ x) [4 v: twhile [k <[trade-record-one-len] of myself]# K, d. i' e% \6 K
[
+ e# ^  u3 j$ ~' M# W7 J: h2 G" Yset 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)
& M5 C* l& M+ Y" I2 U& `4 d7 cset k (k + 1)
; p) D5 L7 C; f  J: t]7 \0 U! O4 w" f5 [
set [local-reputation] of myself (local)
% R! D7 r7 ?& t5 I. H3 O! J% w3 Jend7 Z. ]$ L& O: ?
/ j$ W5 v& c( `5 F/ T
to update-neighbor-total
5 z1 Z4 S+ m" H, ]- u$ p& b0 T5 l' N
7 ?1 q9 l/ }; q. p* f. I, u* Mif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
* S* z5 Z" B9 }, `/ `7 j7 y8 l1 }) U- v5 ?, g
- ~; `/ R) D) [2 n
end$ W+ X& m- v8 |& M( C) }
& F, @4 j) O% l. ]
to update-credibility-ijl
' D' b. `5 O/ ?1 _- ~/ U+ p+ G5 G$ U- T$ E7 n* Y! e) h
;;
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。" L6 D+ d9 Y4 w' g# ^& U' u
let l 0
0 C' M0 C7 }. e4 H7 q" X' S! G" Uwhile[ l < people ]4 U5 X1 j8 S. Q, c6 s6 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
5 F# j2 `6 @$ o, v% k[
6 y" i7 M' s0 c1 F* y/ wlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)& P. [0 B' y, r
if (trade-record-one-j-l-len > 3)- N6 c6 Z3 ^5 w+ N& ~" }  F# \
[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
, a7 D* w6 {) S: tlet i 3# g' N" T# Z- N  ^; I
let sum-time 0
4 z! R) Y: b7 i1 `$ o) s8 awhile[i < trade-record-one-len]7 R1 f6 h6 }" h5 d
[
: V( |! _0 ]: s3 Wset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )# Z, \* Y5 @: y& K' B
set i
8 ?. [9 a8 w0 F$ r& w2 [. v/ j( i + 1)
* v1 K2 r! `$ r2 E) o/ I, C
]8 k* l' _7 K. j# F! o1 ?
let credibility-i-j-l 0) R: N" e- i4 u8 x& T0 D1 V3 c4 S
;;i
评价(jjl的评价)
8 L0 p; G3 g9 Y' ~let j 3& D  Y& F0 B' }
let k 4
5 J, r2 {6 A: T3 p7 y8 Awhile[j < trade-record-one-len]. M% d" e/ Y7 ^9 p
[
1 M/ Y" H  B- q8 C2 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
- U; i. X' g+ X# t1 [. r) ~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)" {- B5 }6 O# x
set j* W$ V* _2 }$ t8 `/ x0 x  J
( j + 1)

+ R/ [* G9 Y% D]
3 e" G5 ]7 f; Dset [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 ))$ {- L+ ~1 E! Y6 j! o

. r' h/ U% S3 U7 g
$ u( P0 o* G& p; m; _% c3 Y
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
3 ~! \  Q* Y' I0 d;;
及时更新il的评价质量的评价
- c- [0 d4 B$ L+ i: c3 Hset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
2 K* {( Y/ p, `' E) {& tset l (l + 1)
- \- s& R. b$ k]
/ _2 M% t1 V0 [0 t7 Uend
) g1 s6 x) V! V& c9 E- `" v  M5 y9 \  c+ }# M0 X( z2 ~  f2 x
to update-credibility-list
' B  @1 W1 D. O; q- [let i 0
2 B" Z& N5 N* {7 b# [6 @while[i < people]
( u4 f9 T8 ]# ^) u& C[( Q8 l5 A; t9 J* ^% D" x
let j 0
- @! N6 j" ~, ~* Tlet note 0
4 r* f2 K2 C9 j# h* ^. T  tlet k 0
7 T& u+ K! }0 Q8 J8 n' @;;
计作出过评价的邻居节点的数目
' t+ o4 j( J) w) ~' ?+ F4 iwhile[j < people]7 Y2 z5 t; f1 ]& V# ?( F
[
2 R4 |' r; ^+ z' h; ~  g! C  [4 uif (item j( [credibility] of turtle (i + 1)) != -1)8 |" {0 T0 g. g7 \1 v
;;
判断是否给本turtle的评价质量做出过评价的节点
. a, c* |. k+ r2 J8 U7 w[set note (note + item j ([credibility]of turtle (i + 1)))* w0 A& J) m3 x% n7 \1 k. O
;;*(exp (-(people - 2)))/(people - 2))]
2 n7 |  `6 p8 Q$ Q4 ^; }
set k (k + 1)- N7 }6 C; e$ \
]. g. z% H$ Z3 S) C9 c' U  Z
set j (j + 1)
/ j8 ]4 q, {) ~. Q2 ]]; o* W3 o1 D, K- }
set note (note *(exp (- (1 / k)))/ k)1 g+ u: \% {7 K* A8 c) Q8 i& o
set credibility-list (replace-item i credibility-list note)# P% W! k9 }! I/ {, ]/ v  [" [' R
set i (i + 1)
5 ?$ `. B2 a" M4 s. D1 X6 e1 o]
# A0 D6 X( v/ `3 E- d) qend9 N1 L( N: y4 K; J3 @/ w

' f- C6 G. y: z% K0 B: e$ C' Dto update-global-reputation-list4 q' O. D* q3 k/ z
let j 0& Q' x; P9 E' `( t+ H5 \
while[j < people], s- B  k; E+ w0 w
[
4 Y0 t7 U+ U3 s9 G5 b; u: l3 qlet new 0
0 |5 H7 V% V; @' a$ M;;
暂存新的一个全局声誉
+ e& h* E  S: [& T7 }; p; Ylet i 0
: l, I5 |/ S; x8 d( I# Y5 dlet sum-money 0' q9 o) B5 B6 }, {
let credibility-money 0
" }+ ~( x" X3 O2 H5 {while [i < people]$ u) x; \6 K7 e8 N
[2 |& s; M  I. P6 G+ h+ b" A2 ^% M
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
  F; L  `; [- c& d# N, Yset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
1 _; w- ~+ Y. rset i (i + 1)+ A  ~9 P2 ^5 W
]
8 P- i. ~+ U% {0 n$ r$ B4 _5 M& q3 Tlet k 0
- g; f' R6 x) F) p4 O) G& h# qlet new1 0
; a3 F1 p, Q/ b) I: jwhile [k < people]
" C) L* s2 z5 ~0 J) B4 z6 Y. T/ Y[& Z% N' [' M, ^, v, x8 _6 {. q
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)9 Z2 K7 Q9 W( s/ r$ |  e
set k (k + 1)/ x- S0 r% L" J& |0 T. O) m2 C  Y
]
: g. F4 K8 G+ T1 F5 u& v! x' yset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) + u0 Z+ ?' x- W" P; P5 x( f+ y: `4 L2 j" f
set global-reputation-list (replace-item j global-reputation-list new)
4 g* S& {, g# t* r3 b5 b5 \set j (j + 1): p9 B1 |: l+ J% |! {5 E
]
1 y2 G6 S& E: T; dend
( k5 o3 M4 Z" b: W, K+ {( T7 L2 ^, I( _5 N. |2 e7 `! p3 I8 W" _- }
- }5 y' `, P# H& v; T, p
8 F$ S; H/ t3 I# N; Y2 ^1 G
to get-color
* Q7 t! W2 i, \' o8 X/ L3 A8 |( f% w" ~2 l) j' s" B# w9 J3 _2 ]4 |
set color blue
# c  q  [0 c% f* i7 b" U6 c9 e
end
# c7 P; `3 n& w! M& D# z) W3 X; W. k  [' k, K- k
to poll-class
$ ^5 j' }" b% x1 x4 Xend
$ S5 W+ Q. v( R2 w8 D
7 h/ V3 y. D: m& Wto setup-plot1
8 r  u% x' |- T" Y
8 u. i6 U! k9 N5 L, }set-current-plot "Trends-of-Local-reputation"

1 [& }; @2 c0 ^: d- n$ C, S; @9 J% ?/ i9 q- I0 q1 u6 O
set-plot-x-range 0 xmax
2 ?% p" Z1 M' }

1 m, q6 N/ o" xset-plot-y-range 0.0 ymax

$ |; k3 G* r. Z, [! Nend3 t' L- M2 Y5 A% {

* |7 `( S* x- R: vto setup-plot2% k$ W  Z6 X. @1 S

" W( V/ L& @" _) t  Z% |set-current-plot "Trends-of-global-reputation"

2 A! u, E1 ]) }
5 v. b+ Y* f3 P: p- Q. q! cset-plot-x-range 0 xmax

. N1 g* p( g+ J4 W0 t7 j# u# @2 z( e$ d$ U3 G8 x
set-plot-y-range 0.0 ymax
2 D, _& R- A/ \7 @4 e: G
end
8 T4 Z9 \: E0 \( A, ^6 y! A. B0 E9 U* T& W
to setup-plot3# j; b4 D* l) j' N
. ^0 i, c+ W- h3 g0 p. j
set-current-plot "Trends-of-credibility"
5 a7 ~8 ~% v6 ^+ E% {: r0 G
6 r+ n+ ?6 L7 q) }+ i( I  S1 e  |
set-plot-x-range 0 xmax

$ b0 K" Q6 j0 P3 X- u0 x
" F4 Q8 i5 p2 a$ ~8 B- Hset-plot-y-range 0.0 ymax

) A2 h/ M+ {  J2 _1 i2 lend
$ ~/ x, b' _( Z1 D( \; j2 x. s" M+ P
to do-plots$ I( \+ `1 [3 i8 Q. x
set-current-plot "Trends-of-Local-reputation"! I- ?  o# E% k/ o) ]
set-current-plot-pen "Honest service"7 E1 |+ ?/ Q! O4 W/ y) l1 f- e
end
( `& ]/ {' b- t
/ j) ]4 t# P. \" r1 r( @) ]5 e# S[ 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.
% g1 l, L% W2 A; \  h: \: s& a3 j# X. A% ~8 p
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
您需要登录后才可以回帖 登录 | 注册

本版积分规则

QQ|Archiver|手机版|SimulWay 道于仿真   

GMT+8, 2026-5-14 02:27 , Processed in 0.026817 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