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: 18409|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, R2 V% S; Nto do-business
9 P* y; ]) |* u rt random 3605 ~" l$ _2 j' v3 y) e/ Z- u
fd 1
2 {$ o' [6 n) L; z6 u ifelse(other turtles-here != nobody)[
" F* \1 O  ~" P2 M1 Q9 t$ A1 b   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.
7 J- X: G& @4 H) t# {2 ~9 ?   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ( t$ I( i) t# X
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
  G4 Y1 R# J: n5 E8 @3 v   set [trade-record-one-len] of self length [trade-record-one] of self6 n$ y0 {" G: h  }1 c  W6 z6 j
   set trade-record-current( list (timer) (random money-upper-limit))& t$ o( L4 t7 K/ b
8 v/ b: n$ v( G, g, H
问题的提示如下:
7 P; [/ V- K& R0 j1 w9 E- w5 C* ]. G# W' c" s
error while turtle 50 running OF in procedure DO-BUSINESS
0 P4 `# n6 z$ Z6 A% h8 z! }5 E  called by procedure GO
3 Y8 V! p% h- o, P: B# JOF expected input to be a turtle agentset or turtle but got NOBODY instead.9 ?. X$ w4 G! i% p  A
(halted running of go)
) g7 Z6 D) x4 {' s$ G) X& T
) i4 o" [6 ~0 s  b7 T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/ G0 F+ D+ 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
$ D) k7 V; _& J# T) ~globals[2 v0 H/ Z) q4 O
xmax
- C) b- k/ u$ nymax0 m# B$ F: O5 e6 L8 G$ i9 d- \
global-reputation-list
! \4 B1 }! U- r/ @, s% Z9 A, m+ ^" X, Y
;;
每一个turtle的全局声誉都存在此LIST
0 J% m6 Z, ?  Q1 j$ icredibility-list& o6 a6 r* i( w2 q( M
;;
每一个turtle的评价可信度) P1 g  D( b5 q. ^
honest-service' ]: R  k# l: k& @' l" a; l
unhonest-service2 j) |4 b4 V" i
oscillation
6 I/ X# Q+ N, E7 A$ E8 G9 s2 Qrand-dynamic
" q( _  {! l  @0 m# U; i. d]
0 d" D9 Z7 M0 n1 W7 S* d1 S# N4 R9 z4 }% M! C8 O1 j
turtles-own[6 T" V' G6 p8 t9 W6 C' I. [
trade-record-all
. l: A6 I. c7 d3 E" P% V$ o;;a list of lists,
trade-record-one组成
# T7 Q' o. J, j3 T7 N& F; {trade-record-one7 h. i- F  T, B- 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: H% S/ p+ [) Q  [( I
6 n% e0 C' {( L$ r/ z' S# R$ r
;;[
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]]3 k6 j# g( V1 Q
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]* W" V. m3 o& F/ k# P* k. l5 r
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list4 K  X! ~  X# H4 d! K+ G: ?
neighbor-total, |* B1 E% y5 L4 d7 W  [. F
;;
记录该turtle的邻居节点的数目
6 T& t( s$ H2 h+ A" Gtrade-time
, D( I( |3 Q7 n: q/ J: c# {4 p;;
当前发生交易的turtle的交易时间3 F6 ^  b" \0 l& I) d
appraise-give
9 W! x7 ~5 t+ @9 ^: ~  V;;
当前发生交易时给出的评价
$ W6 _" d8 A) r2 H  s0 eappraise-receive& n) U6 f. z* T; U) V# y
;;
当前发生交易时收到的评价9 l% \& [3 ~, d! T
appraise-time
" E+ @) e  D$ l* N% m;;
当前发生交易时的评价时间
" P% E7 e# Y1 t2 A; E, Rlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉, K' d  K- }$ L( r. J
trade-times-total
( T9 `; r3 O; `0 V/ d4 p;;
与当前turtle的交易总次数6 L0 ~$ X0 m1 e) b
trade-money-total  P8 I" Y( }( {8 R* z5 I$ S
;;
与当前turtle的交易总金额/ V# Q( ^1 ?9 e; s
local-reputation/ j4 P/ a4 w( o2 V
global-reputation- G; D4 V! b8 J
credibility
0 @, S  d. f7 G* A4 K4 Z;;
评价可信度,每次交易后都需要更新
6 [7 g3 p# S- d7 p' I# Gcredibility-all
. V+ b2 ^0 ]: @! s;;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  t% @0 K; E  i& z' a

& N3 G. l8 U$ }$ g5 i# `% H& 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
5 i, ]2 A) b; M* [# ccredibility-one& \, z0 z  J  F& Q- U6 _
;;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
& w/ a' M+ v5 O- l5 I. hglobal-proportion; z" L" x1 M( C1 _! T/ p
customer8 _+ l# _. J3 p0 k. R1 u
customer-no$ v: ~1 |0 W: T5 D
trust-ok
3 {6 l7 w3 o; y; N$ F# L7 c% o3 _trade-record-one-len;;trade-record-one的长度
- s! U) Y$ k. l]8 H" u/ |; Y# k: h" D6 B% J) |

4 u$ E1 ^+ }! [2 o5 b;;setup procedure' D& u. U$ y4 {4 [$ I% W  ~

3 t7 r3 o5 s3 m7 b6 Bto setup
6 v, C% h: c, M( b$ W. U& W* M3 H! q' I! D, {0 T
ca

# T- k' z0 s* V9 W& P2 z1 S* ?& r. @6 r% k
; y; `6 o( D" z, [& kinitialize-settings

* `: ~% G' k( ?) e1 q6 Q& ~- U5 B: |& S, T! v' U% Y
crt people [setup-turtles]
8 T5 T) g: u$ B! s

% O$ Z( K9 y/ H3 ureset-timer

% F' j! H6 g. h  |" U4 B" R
# o  k: y2 a1 L, B" r+ m4 I8 wpoll-class
& o$ H# P6 @& q4 k
/ S/ \2 O) }' i+ q8 I- D+ Z
setup-plots

3 [  o& L$ B  }% G
' K4 o) ~7 d1 wdo-plots

4 U- o. j+ H/ N, C. Y$ d' Vend- r' @: k5 O/ ]  N0 C4 F
/ Z3 l+ ?' ]7 s( B1 a0 {% ~3 u
to initialize-settings
: P) t6 }  g4 ]$ H+ p% a8 D  U6 l" p, S. F' R6 w5 J
set global-reputation-list []
( y( m; h3 Z  v1 g7 X+ k

2 i3 _; A. G, P6 R# X" Gset credibility-list n-values people [0.5]

9 t- b" K% t7 [3 ]: B! O" ~( r: @. C
set honest-service 0
7 b, R7 P# q6 h$ N. }" x

$ @1 ?, M# }0 d/ k% l4 G5 {set unhonest-service 0
% K3 G7 ?$ a# P! p/ X
) W  r* e9 b. ~9 R3 }
set oscillation 0
4 k0 z3 |1 k1 I6 r. U
% v4 ]6 H8 e! P  \5 j
set rand-dynamic 0
9 n4 z8 j7 T! k! [9 s, \6 f
end
2 k" w) A4 T6 g/ k# I" d) G; E2 Z' f# E) K$ m7 p
to setup-turtles 0 j/ p) P$ J% G7 d& U6 }3 x
set shape "person"* j, C7 U% S5 x
setxy random-xcor random-ycor( s3 I& U9 ~0 Q$ F! B
set trade-record-one []
9 P, P1 p) ?/ d! \; J
8 P# e) ^4 h& F' |: G
set trade-record-all n-values people [(list (? + 1) 0 0)]
5 t! P. T) ~; z  k( N* I1 \0 G! y
2 ]- W3 j- S, l& ^; @, \" h6 O
set trade-record-current []
' X6 N' R) ?) z. lset credibility-receive []
' V6 S9 T2 |4 Oset local-reputation 0.5
; b# M: x0 W% Tset neighbor-total 0
7 V' y' ~' r! T! Z" Q7 R7 eset trade-times-total 0
& u3 b* P- V& a. `5 h- K! bset trade-money-total 02 B' l( ~- J1 D( v' h9 i  L7 \/ [
set customer nobody2 x, a( w  I. m& D
set credibility-all n-values people [creat-credibility]
( [! t# {- u( Y2 V( s+ Nset credibility n-values people [-1]
/ H  `; l. I2 e9 n' b  W+ ?2 t( p# Kget-color
. j7 [+ a& K, [: ?1 n5 Y

$ E( Z4 l3 u+ g! Tend' @. I. f% v% I$ U" \, _
4 M+ C$ P2 e- y5 y. C7 a; X% \
to-report creat-credibility
3 J" V( i4 Z- I% b: nreport n-values people [0.5]
8 Y0 G% T4 x7 u/ c* G+ ?8 e$ Fend3 R. [/ I, Q: |* E# ~

8 b: J$ c, j1 a7 B5 Y5 Vto setup-plots6 f3 b1 x, |- c5 i
1 ^" x/ k( D& r
set xmax 30
3 A5 Y3 D3 W7 w7 f+ x: g

1 M. o/ y' F, ~  i8 Q; uset ymax 1.0
% u  E4 y! v1 O7 y
/ O$ g+ r% j. J
clear-all-plots

' M2 r* G# w! L* ?% Z
- e2 j& K( E9 a6 r3 Csetup-plot1

8 ~! R/ V6 [+ i/ j* ?. j7 y
( V: b$ L  c4 r1 R# S, q1 [setup-plot2
# E4 c# |  H$ k- A8 x/ d  q# _

( M0 u1 P2 N$ ysetup-plot3

% F# z. P# e( Z/ i3 E% j! z% ^end
8 r6 m( {8 l7 |4 g9 f* J4 b  m5 W( s7 V% A5 s- c
;;run time procedures
* c- K! g* a! z% C
4 T' ^2 e/ L8 O  T3 ^$ p$ U6 qto go1 O# x6 q3 O' T1 Y
* q0 U1 Z, j/ X1 p- V! N2 }
ask turtles [do-business]

3 r( B! i% y0 L! F7 j$ c3 bend
  N; c; p) o2 W# i+ J8 G# x/ h( `2 F  c
to do-business
  F8 N8 }- f( C4 u

) ~) R, q- O: _+ Z& k9 r8 E) M/ Q! Y. a# J( W; v" V
rt random 360

' O4 @- M6 t- Y: _: Z
7 P6 O; e+ ]) }+ z  rfd 1
4 m5 S& }+ R+ y
3 |+ W0 h3 P7 Z% W6 Y0 j, M! F
ifelse(other turtles-here != nobody)[

. H) d" v. F- G0 p4 j* `8 |( N" y% I# R
set customer one-of other turtles-here
8 b7 ]! J* x( z1 g; y  V4 v
- P/ j+ S) H" T7 f& T. U2 ^+ G  k
;; set [customer] of customer myself
# T9 c6 U0 v4 W3 o/ X+ b) D
. Q/ T) _) t) [3 _4 d
set [trade-record-one] of self item (([who] of customer) - 1)3 C% R; r: r2 _- M- ?
[trade-record-all]of self
9 `/ z6 S3 n$ `0 Y" i;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
4 \4 ~; X1 z- x+ ?& b- |, E
' M! q; R+ P8 @* D
set [trade-record-one] of customer item (([who] of self) - 1)# {4 a, [2 d/ X% _
[trade-record-all]of customer

' Z" {# l2 \% n+ u/ J
' i; L" Z: Z* Q& U3 O9 D, @1 Q) bset [trade-record-one-len] of self length [trade-record-one] of self

  N5 ]. l& D4 R: c/ n+ I$ h0 q& O
" M" o; D$ |8 e& Fset trade-record-current( list (timer) (random money-upper-limit))

* R/ ]6 R. b$ o: ~; K8 ?
+ w' I* A8 `2 J3 g# [+ R- pask self [do-trust]. T  ^0 K" x1 J4 r
;;
先求ij的信任度
" b/ O3 W, k9 l) t+ [: R3 J5 i! C/ l; O" _/ v. N: v6 _8 b
if ([trust-ok] of self)
- V6 v' F! H; H;;
根据ij的信任度来决定是否与j进行交易[2 U) D1 O* f5 L  Q
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself6 c. p0 P* `5 g  `% `0 Y1 n9 y
  D! R0 t0 ~, H9 U6 V  t: I
[

" Q/ [/ \$ B5 z( ~
6 N! W1 x, H+ V: O7 f+ Edo-trade
& W# k6 @/ |' O% }5 H
& @3 ]+ N2 `/ |5 A9 X, G" f
update-credibility-ijl
& M$ |% T% d( ]

5 `- n- u( A" a; j& @& Y+ E9 Mupdate-credibility-list
# P1 N& T0 `0 b/ V6 w% h7 V
1 \+ H1 q* ^$ I5 c; ^& G. d3 |

( g/ O$ A7 I; Q: Cupdate-global-reputation-list

( @7 @$ B/ _# N; m3 p$ U3 |* ?7 k4 ?2 ]/ _$ T- @
poll-class
& f8 J1 r% `$ d& [1 m0 F
$ }; S, E. k3 K) c0 a5 B% U
get-color
7 M2 O7 M- W& x" U  z& N% a3 P

# F# f, s) Y# R5 q9 y- t+ q7 Q]], Y: z; g" p+ V" l" h. u# J6 m
) n4 {8 r( U3 P( R" l) A
;;
如果所得的信任度满足条件,则进行交易
  ?) `: o% M3 C, t/ A2 c% X
2 g& A7 w+ ~2 ]: C% V% g# B0 \[
8 F: Z9 ?( r( I$ |0 b$ S( r* k9 m
8 I  \3 [9 j& g- @- {! P; k  q8 h
rt random 360
) H; T* B" ]8 a; o# N+ O; u

+ w3 Y2 G& p, Yfd 1

! x3 V4 @* r& h* |: X5 `* X& K: A& J; k; W$ k: R2 @
]
. t+ P& u4 ^' T7 g

! l' S3 x% a+ W2 c+ Q6 {. pend

; }: h) I9 s3 k; D" t3 Y# F3 W
5 D7 F, i3 j0 {! Eto do-trust
3 b* C4 Q# F7 |% g% G$ Kset trust-ok False
% d( l% O( t- G: k' z- N
/ N7 @# D: R0 K# ~6 V
3 Z; Y: @7 Q6 M/ e3 Z9 a- F
let max-trade-times 0
& ^; \& k8 _8 Y, j- @$ I( {/ Oforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]: e0 B; w/ R: m/ z. P" D
let max-trade-money 0
, C' }1 n; C7 l( J9 j# cforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]7 z0 U, s5 d9 Q! A/ f4 U
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
4 ~' C' h: m/ }
# ]: R/ k5 p, Z" R0 q! m: e

1 W1 I; t  Z- c, Dget-global-proportion
- u( J5 N+ p* T7 _let trust-value
3 B* m0 M! i+ `- q7 `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)

, U$ Y& T! h/ b  dif(trust-value > trade-trust-value)
0 ]- s; v9 ]* r1 t0 e: _& B$ b[set trust-ok true]
0 [- }9 i& C. g2 a5 J$ `/ Fend* o0 j! L( x& V4 g3 i
: H2 |' _. h1 A* P( R# e% w
to get-global-proportion
' ~& i' I: z. E2 Q( I  D5 v" iifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)2 R9 v! M+ ~7 q3 {/ t
[set global-proportion 0]
7 S/ y7 q! E/ x# Z) i[let i 0! C9 r+ L+ N, t1 Z. ]' p
let sum-money 07 O. s+ }; }, l: s9 x( K) @$ Z
while[ i < people]
3 I& h* X+ M3 b! x; ~3 H[
" P% q$ T, o8 Y, Q/ U0 k" yif( length (item i
% i; ]% ?1 i- m+ }# B# U( H[trade-record-all] of customer) > 3 )
% v/ f5 e5 `) S% i
[
; [6 K* F) _4 r4 J$ d3 Sset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
7 l/ y+ D! v, l; N]
" x2 g0 ~. G4 b( M0 u]
5 f# H4 G; v! |* X+ ~let j 0
- P" n& f8 d7 x( V6 Clet note 0% T4 p; z4 v2 a- j* v* ?1 H' u! s
while[ j < people]# C7 q- _3 [/ ]$ j& [1 E
[* P0 a7 D( S" l" @$ V% M( i
if( length (item i
- V; S! [+ C7 P% e[trade-record-all] of customer) > 3 )

1 Z6 `. H4 w6 d6 m% @, r7 @- H[
6 [" E2 L; t6 W1 p  U" x9 Uifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
& S/ a* D4 l6 L+ p5 U[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
- |  f1 b& t( J. E9 F! b1 l[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
2 H* j# ~, U2 }! B3 C8 i. X]
/ w( L" Z1 r0 r1 F]: M4 {# f4 |( }
set global-proportion note
" X  y5 T# E& y$ V]& p- L4 M3 I0 D; u2 X5 q
end
, T: v( e& r. e; Q, _' e5 q, a# u+ y. s& i/ {/ S' d0 w: z
to do-trade
" M3 h9 |8 N, k9 O* l7 g6 l;;
这个过程实际上是给双方作出评价的过程
+ {' H# O# l" \6 I  d, vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价( [) u: o5 Y; ~9 }  v: H, L
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价6 o' J' B. }+ \6 v
set trade-record-current lput(timer) trade-record-current
) r% a1 y6 t9 J5 s" W;;
评价时间: |. W8 i! l7 _7 ^; L5 l
ask myself [$ r8 ]4 ~/ y/ V# P+ ^3 n
update-local-reputation3 v5 Y  C2 z( y7 b7 ]. a1 S
set trade-record-current lput([local-reputation] of myself) trade-record-current+ H  A$ z1 }& z6 g5 W; M% [  p$ G# H( z
], b. Y, j2 R+ f. y3 G5 J: g1 i
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
" m5 S/ B1 g! P3 x;;
将此次交易的记录加入到trade-record-one
8 j* m6 f5 O. M$ g- }' l) C2 e' y& }set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)6 a8 t; x. E. \, K/ }! T
let note (item 2 trade-record-current )
  Z; \, A7 x9 k) s2 |# Pset trade-record-current
0 L# |& _' z9 ]3 A(replace-item 2 trade-record-current (item 3 trade-record-current))

4 i4 u# s. O% S4 V- I" s# lset trade-record-current3 O9 {9 ~7 o$ s: f: F4 _# J
(replace-item 3 trade-record-current note)
/ e# |% `( r0 w$ ]: B' o% h# y0 H% f
: ?$ U8 X7 m9 s
ask customer [
+ P) n, w, J7 Iupdate-local-reputation
# {6 ?6 F, n$ v3 W) K% t. Zset trade-record-current
1 @0 M& u5 w- i3 O/ }% Z$ g+ Z+ Z1 n(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
6 G  N' A& L0 L6 J
]2 g8 Y3 k/ G6 ?- U3 T6 e2 P

; U1 m2 q& [6 ^$ k$ F4 K
1 Z& T( v6 M& q
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
# b7 Z+ z) v- I- _% q3 [1 ^
' x2 @. \: p. X
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))& k2 d6 w+ |; D& v
;;
将此次交易的记录加入到customertrade-record-all$ O0 o2 {/ ^" P4 g4 s
end1 r' G8 h* C! y6 r* g; K& Y% i
- U3 a* U, F2 |# R* o
to update-local-reputation
7 J- a7 @: I! K( bset [trade-record-one-len] of myself length [trade-record-one] of myself
2 _) x& u! B7 Z7 K8 ?' H
- ~* m) l" s  n& G: I# a, R$ ^# b  D
;;if [trade-record-one-len] of myself > 3
9 c* W; A  C6 b" r% O, V
update-neighbor-total
4 o9 Q/ [" c' |( k;;
更新邻居节点的数目,在此进行0 q- \4 X, O- }
let i 3- b* U1 z) o& W
let sum-time 08 o$ t8 j$ a! n/ O
while[i < [trade-record-one-len] of myself]
, V# K7 @  Q( [% S: Y' D; }0 V! h[
5 `2 d# n5 p- O' \& }set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
2 j2 C. V" `' a% {4 eset i
6 j2 W/ t& J+ d4 |( i + 1)
0 C$ Z6 `! L' K* @2 [: p
]# B& v0 c8 N' W7 E4 Q% \
let j 3
$ ]4 o' L( g1 Y/ T2 V( [: w5 `let sum-money 0/ R$ |6 z0 {$ p, F& i" X1 U% X
while[j < [trade-record-one-len] of myself]
' l# q7 _  t# w[$ q; n, n% Y8 U+ a- q) d9 V5 ~
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)  @' e. c+ P7 J: z2 U
set j0 X7 r$ `; j  k6 o' R0 @- J
( j + 1)

3 l( B' J4 a6 A% C8 B7 M]0 l3 j. z' L! _
let k 3
4 q$ }8 W$ c3 ^  a( flet power 0
2 W- P$ A5 C# k: m& G) jlet local 0' [9 N* W- g" I. b  X, g
while [k <[trade-record-one-len] of myself]
, O) e6 Z1 Z% E* j" v- h, _[3 |# ]9 P$ |" d$ M" m
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) 4 r2 u9 e, k& A
set k (k + 1)- o9 j" S' p0 C5 D0 k
]
6 i+ `$ R' g( b5 X# A! ~/ ^set [local-reputation] of myself (local)+ k4 Q4 k4 w& [; H% _
end. x0 \7 V: H: C8 M0 C

3 Z9 x! f4 R9 wto update-neighbor-total* ^$ o( ~0 K! f6 v, {- ^
3 Y# u8 w- }9 C
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
5 J9 Q7 }8 T9 r& y. q
4 z9 U( K' v/ \  ?3 }+ X% @2 K4 G% K
) i0 B( G5 _+ a9 B. a( D7 O
end3 H- \- q( G( |2 K2 q

1 X7 I) ?. A3 v' ^, V$ qto update-credibility-ijl $ I6 H+ D; F, j' N4 }

+ S0 T( c' P$ a; e5 |( H2 o& f2 v' Z;;
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。- `' f4 N# t  x, ~% p" k0 G
let l 0, K: {' s& x7 B* Q% O4 _
while[ l < people ]8 L- G: X1 Q. V# S
;;
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$ Y, Y, c; {  j
[
* V5 v. j  L4 y; \- r+ W0 Ylet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
/ o4 b) A6 j; x! Eif (trade-record-one-j-l-len > 3)+ k1 y# ~! m4 a( P, w; M/ m$ G
[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& |- L2 |0 R% w2 Y4 z! Z
let i 35 n3 c: q5 H8 M& U
let sum-time 0) d+ j- [( R6 t5 ~8 e
while[i < trade-record-one-len]( Z9 W6 \+ D& p( ~
[# G# L+ T7 q4 P) D
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
: l/ [5 m/ u, G" i* o& oset i
2 g& k+ }% S  h4 f( i + 1)

: }# ]/ ]% y1 L. a( X' B]' F; G7 a# u# L, l  v" A' \
let credibility-i-j-l 0- z0 M/ T* L% |" y
;;i
评价(jjl的评价)
2 c+ f  \2 [. O: ]+ ~5 i/ W! [let j 3
$ {( J; b  ~0 m$ g) M. O7 O2 b0 Dlet k 48 g8 ]3 l* }6 {5 C9 q* o
while[j < trade-record-one-len]. ^7 v: Y1 B. O7 `
[
+ G5 @. Y, D+ Kwhile [((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
* ?. Q0 }: O4 m8 F6 w; t7 Dset 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)4 h& r7 [" q" E6 m6 H" c9 ]% F
set j
6 _8 }- G* X  {2 F  n( j + 1)

1 `& ]) j) a' c" M' b5 E]2 g% \4 N" {' P# P5 T1 t/ P! W
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 ))
( F5 Z& }( J, x2 r8 `& M+ I  M) [* s
0 ]2 ]! Q  R3 N1 z9 w7 n% u

# Y6 Z$ D9 n3 x" K+ k. M- hlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
0 {9 n  `6 ]8 ^. O5 X;;
及时更新il的评价质量的评价7 C# S: r5 }" b
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
) T( D; N% h: f7 b! Dset l (l + 1)
) J6 z9 K3 n5 r4 w: F7 r2 X]
) ]6 h! N2 e5 \+ P7 J; [end
$ R  `; [9 e, `4 ~* h8 G' f. a9 J/ t) g" J" a
to update-credibility-list
  O, k/ g; l3 Klet i 0+ y8 `5 J# h2 Y
while[i < people]
- F$ ]1 e. e1 R1 S2 m4 a8 G+ r[" G# q& `) H- [, U
let j 09 Q0 }# j' i4 J/ ^4 X8 \/ G
let note 0: w  w( |5 E- \* U+ `
let k 0
5 k- n( L" v) a; T# K, x;;
计作出过评价的邻居节点的数目
* R  D: L. M/ ^while[j < people]; {7 g' [% D( k6 P& t3 d* q
[
6 \9 b- g$ a' G1 }0 fif (item j( [credibility] of turtle (i + 1)) != -1)
; f3 r, w+ P7 o3 e;;
判断是否给本turtle的评价质量做出过评价的节点* C6 G6 M$ n0 U2 q! ~  X$ o
[set note (note + item j ([credibility]of turtle (i + 1)))
: {! V* E2 J4 Z* t' ];;*(exp (-(people - 2)))/(people - 2))]

) ~% {+ w1 i* Tset k (k + 1)2 C7 ^0 F5 ]  N5 H6 W6 m/ i
]
. ^0 P/ N3 @, O; a; ^6 Aset j (j + 1)6 B! w& T# h2 U% X( v
]( @, l$ [. w/ f
set note (note *(exp (- (1 / k)))/ k)+ l: e/ P( p* [# c3 Y) K7 d
set credibility-list (replace-item i credibility-list note): i: z6 o+ m$ v. U, T# H
set i (i + 1)# l7 v) ?: |* Y, T+ ?2 h4 m
]
; y2 r8 N. N# F" Gend% d: b+ t# X9 _% ?) i

0 h: c: o/ o% z4 p0 }: M  Vto update-global-reputation-list
3 e2 U3 J0 n  l1 a" i7 ?% {let j 0
  N$ `( _2 C0 v2 }2 x3 Iwhile[j < people]) e. M% _3 o7 V4 }
[$ G5 U6 a" V3 B  W8 m9 \, ^' ?, O
let new 0
& v+ G2 r  O; \: E1 K3 w;;
暂存新的一个全局声誉
$ D" M7 d# f# l2 O# K% q2 r* Blet i 0
8 ^( V  y* h  {5 clet sum-money 08 N' z4 k; w+ g0 H' b
let credibility-money 0. h6 k% g& {* T8 Q
while [i < people]
  c/ Y, D7 X: P. g/ N/ p7 e- I' m[
7 L) @, o3 \% m) L  ~$ O! Bset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
% x7 z% W# P5 V+ p9 T4 E" i2 Mset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
+ w( U7 u4 W' z: H/ N- D- bset i (i + 1)
2 ^4 ^, h5 _, I3 \) [6 p# A- H]
! [3 w6 U* s1 l, jlet k 0
1 ?. J# H  o% mlet new1 0" K% Q0 E" A3 U9 I0 H$ ?
while [k < people]( d& S: B5 E! z" N: b
[5 Y& Q1 z4 E6 \4 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)
6 @% f: @1 ]1 kset k (k + 1)3 f  j  @. i8 Z, r, f
]" i) ~7 c* L  z( k/ f
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
8 ]8 P3 r: j1 m. [! vset global-reputation-list (replace-item j global-reputation-list new): O$ `! R. L2 Z
set j (j + 1)3 j" w) S: z' K  Y/ f
]
9 @' s0 u7 G1 S) |  c& Rend
6 l% _: b3 C: S1 i  e5 i$ [& ~8 v! n3 u- }# I! D2 }; z( O# q9 a
$ H9 Y7 U% X' Q4 z/ ^3 @2 C
0 P- E0 @4 c- `2 {" Q7 u: Z# z& {
to get-color0 x  j, r& O  [( t

% J  S: o. L, g' y$ `; U, ~: Aset color blue
' b7 z& ?3 v- Q% C
end
* D" `' Z+ ~" f1 o1 A
/ I5 ^. S5 p1 f  E. i" |# k1 x) Gto poll-class) I4 \5 V7 A3 U- M# @: _
end
! Y' x( j; K( [
4 h$ P7 b* U5 g& V4 Ito setup-plot1  T+ V: ~( {4 n5 U

4 B/ }# O" i; B- O. hset-current-plot "Trends-of-Local-reputation"

3 F5 m( X1 G7 N/ s) Z# q7 i
' S( [9 Z3 _& _& e, p0 Uset-plot-x-range 0 xmax
% d* A: _2 ?) U2 s+ u

2 a  `+ R6 t  R, B9 ~! \  ]6 M% @* Y( Pset-plot-y-range 0.0 ymax

: p7 Q0 x5 [. s& Yend& {0 B7 l9 I4 i$ x/ @

3 Q8 f6 U# \- ], u# jto setup-plot2
, c% W2 k5 W) S0 P, U3 e
, O$ l: c5 ~& b" E" kset-current-plot "Trends-of-global-reputation"
! L* d9 v7 M- u* r3 e" i2 k& d
; j# l1 U' ]4 f& y, C
set-plot-x-range 0 xmax

4 A: A1 ?- o& E) n9 Y/ b5 [. r$ O; x" ~+ `4 H& O% d* y; N  M0 j, t
set-plot-y-range 0.0 ymax
7 N, r5 s; @( p: N
end
) z# W0 t5 }; A2 _/ D' ?3 z+ f7 M2 E; ]* g7 l+ |- p
to setup-plot3( w1 R  P3 n7 a" P. {# [
/ ?) T/ t/ }1 j4 W5 o
set-current-plot "Trends-of-credibility"
# h5 W! d) E  l& w/ `
; [5 X9 f- b/ w' L
set-plot-x-range 0 xmax

8 z* _7 `. ~6 W1 d, F& X# J& w
, J6 d" K5 S2 j: {, K3 u% R5 \& \set-plot-y-range 0.0 ymax

8 Y$ O- o8 m$ Uend
% f/ m7 a' e- M# Y& l( U$ Z' b5 j* V$ ~. z" o5 ]
to do-plots  X+ y9 B8 x/ y  K  b% ^
set-current-plot "Trends-of-Local-reputation"8 [0 u% M+ L% L) U5 E  T
set-current-plot-pen "Honest service"
# L( Y( J7 w" N1 Z9 v- j" J0 ~end; t) T  _- }6 ^4 z
$ W" |6 H+ y  N$ e" F/ ]" n
[ 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.
( d0 N! W. N+ V- i7 Y! \
9 F4 H4 r4 M' N8 q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, 2026-9-13 02:30 , Processed in 0.025112 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