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: 17931|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:6 B/ a+ d; c# W* \2 V6 u+ |
to do-business % V; V) q) a4 _
rt random 360
% }! m, T2 R6 ]2 d. A fd 1
2 u  ?: E& i. H ifelse(other turtles-here != nobody)[
8 w, d: U2 n- Y  s) ]7 a. l   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.
4 m4 O2 s( C9 }" i/ z  K   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    # A+ L7 j! Q6 i6 V  p& m
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer# {" N' C& V$ F7 l% R' W
   set [trade-record-one-len] of self length [trade-record-one] of self
, ^8 f1 m+ ]6 A) W  G, u' n   set trade-record-current( list (timer) (random money-upper-limit))
. R: c; Z* w: v3 l" {
/ W! p7 \% r, n问题的提示如下:6 i5 I% r* u. y9 y
9 A1 Z2 n2 h; T/ k
error while turtle 50 running OF in procedure DO-BUSINESS8 x) M: l  j+ b3 B3 Z8 V0 S
  called by procedure GO* `5 }& [0 q& D
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
( W" }7 ?& s4 L
(halted running of go)7 V4 b; c. }! s/ Y

6 t* `. ]7 Q$ k1 y4 }  B  }% [# U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~~
; o* v/ x& I5 M8 g* F6 ^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
: K8 E: d/ j+ \9 `. y3 ]" o  s+ sglobals[
0 O2 }& V" F2 ?* f' o- Lxmax- P8 q/ U. H1 _, C$ d
ymax8 o* u  H7 _) h. I( I2 ?
global-reputation-list4 V$ l+ ?2 x* o
$ i  J$ E7 v) U1 l0 h# U
;;
每一个turtle的全局声誉都存在此LIST
; Q1 L. J4 x/ j7 v4 Dcredibility-list
5 \# O. q( K# k9 Q* @;;
每一个turtle的评价可信度
9 _% w! N  ^; [3 \  Z4 Ghonest-service  `; S3 x) D4 p5 B4 Q9 J. \
unhonest-service% a5 I# R- Z2 o1 D) d. z( j
oscillation; x7 e- I+ `; M3 }" X8 y
rand-dynamic  o8 X' w, J  l7 |4 t
]9 @" P6 ]) t, t/ E# Y$ U( q) X" W
* i" i3 O" J2 p  M3 k! h
turtles-own[+ Q# |9 Z7 |: |6 p
trade-record-all
4 _) ^+ h- v0 \' F;;a list of lists,
trade-record-one组成
- B" W* T+ r# H4 [9 P8 Mtrade-record-one
3 V: y0 c3 z. Y! K5 Z& }' z( o% e/ c/ P;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录" ]- a- |7 E4 \+ \. L- w

6 _- `; O8 m  f;;[
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]]; F  {* t, f+ N  u5 M
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]% ]2 x1 P& s- m3 f7 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: O- c3 ~& {" P  a# H
neighbor-total* Z9 g8 S) N- M. c) P! w
;;
记录该turtle的邻居节点的数目4 X2 T  f$ Z) ]5 j( n$ c& Z* D, p
trade-time
7 [8 W# @  P/ A1 Y0 W( [;;
当前发生交易的turtle的交易时间& v" A# \: U5 ~: U: x& K5 ~
appraise-give4 D5 A* i3 ^, b
;;
当前发生交易时给出的评价2 D+ J2 u" z" ~. `* c
appraise-receive  d# `+ @& a8 b8 h7 Q5 W
;;
当前发生交易时收到的评价
' ^, z( A0 w1 V' x0 e$ D# mappraise-time( f, ~$ n' G8 Y  i9 b5 T
;;
当前发生交易时的评价时间
" r: ~2 W; Z$ d1 Y; a: vlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
9 e) U: R- B6 F: A0 mtrade-times-total* z2 ?# E& j- `
;;
与当前turtle的交易总次数. `4 I0 S  _$ a6 m- l4 s
trade-money-total# ]& Z* O0 u( ?& D3 E( {2 U9 Q
;;
与当前turtle的交易总金额" Z& d) X' i/ _- ^' ]
local-reputation1 M) j" t1 E) N4 E2 J* ]+ a' A
global-reputation
" v% b; N$ x" }5 Zcredibility! R4 K6 m  {3 n9 N0 ~4 X
;;
评价可信度,每次交易后都需要更新: I$ j& Z. k! w+ ^/ s  z0 o
credibility-all
" b8 ^4 d" h( u2 @! w% ^;;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
" }' ]/ m3 ]" T- }6 S. N1 p! B5 L( n! ?% ?2 M! K4 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( P& b" M* q( a  z1 V3 C3 P  i
credibility-one
; ^8 o, `+ l2 Y0 K;;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
& Z( i. h) p0 x. Nglobal-proportion
' a( B9 o- x: M# G7 R2 |2 A' Scustomer% u: N/ o- [0 ?8 ~
customer-no: h1 ~9 v, u, N1 P& K1 |  v" Z
trust-ok; G; l8 @5 n0 ^
trade-record-one-len;;trade-record-one的长度# o8 ?) w; t& C4 P4 Z3 q
]
% e7 C5 |; _$ ?0 K3 G6 [& W6 F: ]& U: p# H5 y
;;setup procedure; U2 m( n  m" f) u- _
! h3 _2 {- W' n3 r# k1 q
to setup$ x- i  M0 y+ T2 Y. \4 M: a/ }

! X2 W4 K+ E# z) I# h, @ca

! @" y0 Y" {  U) W
# O0 \0 @. `4 r9 w! t' sinitialize-settings
/ `6 u" e; E0 A2 N3 |

7 c* h: Y( E8 U* Pcrt people [setup-turtles]

* ~4 C& P# `/ y. U/ D" f# z; C' u/ r- e; M7 C* }- G
reset-timer
" P" n, g* J+ b1 F. O
7 `- ^# M0 Z5 g& |. H2 t, ~
poll-class
( C$ l$ o! \3 h3 s7 s( t7 F
+ ^( O; j- j4 R8 `! r, E9 D2 ]) z
setup-plots

6 V& z( S# P. h/ G2 Q+ `
; N8 p$ q5 r5 h  ^& }do-plots
2 i" u* u$ e6 o
end
# F  U2 Z; f; v0 g: N7 U4 D3 @0 A7 j, t4 v' v
to initialize-settings
1 U( M$ u& F: x+ @3 t& @0 s: @8 }+ p3 c0 b% W8 v' w- O0 A/ t0 N- J
set global-reputation-list []

$ n3 ]7 A+ S3 u) {1 s7 c" s; c, i. r9 g( @9 S) \
set credibility-list n-values people [0.5]

" @+ h) z6 m+ g6 K& H4 Q3 b# W) I7 m0 b7 N  e" d( A) T6 v0 F8 g
set honest-service 0
8 n7 I( `6 K: R
1 a2 ^/ R  Z2 x3 Q4 ]
set unhonest-service 0
+ @7 t2 X6 s5 h9 Z6 G) A4 ~
6 d. ^! ?! k" n& E7 }
set oscillation 0
* v# L3 Z6 A2 t/ c4 E
; a8 f6 B4 ?# s3 K% W4 v
set rand-dynamic 0
6 z! |# P1 \4 }+ M6 P- x4 R
end
$ _; p" y" n* ?8 g* j# C! w3 J1 J; S9 H0 W- ]9 ^. p* C. z+ Z! o
to setup-turtles ( M- S. B: t$ x  S: g
set shape "person"
& @, J3 U4 Z/ R1 C3 I, R1 E9 Wsetxy random-xcor random-ycor( D4 v+ u, u: `  Q  I
set trade-record-one []
. O) J& }# O3 q8 v: {7 q6 n( k
5 G5 a! D) Z) p
set trade-record-all n-values people [(list (? + 1) 0 0)] ) }$ k3 U7 x: z; B" o8 L% I( o4 I

  B) h3 X2 k0 V: Qset trade-record-current []
1 l" Y# T6 Z# T; [4 I2 C8 G4 cset credibility-receive []
- y8 e  X$ w0 x% Z  wset local-reputation 0.5
& J! ^  T  @; p% y! f0 ~- n7 \set neighbor-total 0
, s% W) n7 B2 K' wset trade-times-total 0' W: R4 ^. W, P. P
set trade-money-total 0
$ u3 v4 g8 ]/ K' n9 P, D7 cset customer nobody! q7 c' l! V9 l# w; N; x8 I
set credibility-all n-values people [creat-credibility]1 L* f) R2 S+ K# L5 p
set credibility n-values people [-1]
, t) n  V- O! ^+ Y1 ^/ rget-color
" l* \' J+ u5 _0 K3 Y: P. {
! M3 F: y/ w: H+ n) M
end
+ V4 {  g2 P$ L5 I% P
) s1 u% a- S: a, uto-report creat-credibility( u' y+ u0 j9 |* q' n2 e% }
report n-values people [0.5]
& }. _- p/ @7 J% Kend
6 M7 B8 K5 W8 K* u1 Y) S1 p2 a( w! d$ D# [6 n+ m2 j8 Z$ |
to setup-plots
0 I* c$ s0 G/ A8 C5 F
) r8 @/ f- ^* V8 Y# T1 V: {set xmax 30
0 P! z8 r+ C0 a6 v4 C( x1 U
4 o, N' S4 s0 D+ P' k- Y! z5 }
set ymax 1.0
# j/ }* v$ G0 h2 k' `9 ?- L

1 D/ p/ k7 i9 V( Y; {* Y' hclear-all-plots

: Q7 a$ j; D7 Y4 r" T  y) H3 w& C$ |! t: P; n! ?( g  r
setup-plot1
/ O0 ]# t; @5 d
3 H; l) M! |. s( T) B
setup-plot2
' e5 r- J# b2 l9 G7 Z* ]5 C/ P

- l( ]& n  C2 \$ s3 j0 R- X% t2 vsetup-plot3

: g7 t, O4 H: p  `" S+ Mend3 d7 t6 Z. n9 d8 o* b
' M  p( b/ I0 Q& K, n
;;run time procedures2 y# i* w! j# I4 B
; l6 j/ d- {5 [2 _
to go0 b/ d/ H0 Y8 y. V/ n

) A+ ~6 T9 j! ~# e# \9 Pask turtles [do-business]

2 |0 z% J2 H" o6 i, n, Vend3 A% F* o* k- `
: Q! [0 v2 J( [+ y6 {1 ?
to do-business
; g. D+ {. {5 m( {& [- {

  j& n8 x9 a2 @/ `4 y2 Q
; l8 y- \6 z, Grt random 360
3 |% g  c6 W* m' Y
' u  I+ K; |5 o9 \4 I" n  s* a
fd 1

& i% \; {/ U2 g+ t' o! [
9 I9 S  H; m, C$ [# Sifelse(other turtles-here != nobody)[
( t. X  q! I& E" q/ q; V8 S$ _
3 S" Z1 w2 n. i
set customer one-of other turtles-here
( s4 R+ ~- a) a6 N1 L+ W
: P  M" N4 U! T
;; set [customer] of customer myself

0 C6 H: y% h- s2 m
& V+ _$ f* q5 ^, R/ s% }set [trade-record-one] of self item (([who] of customer) - 1)
, D) R7 S: Y- G" e[trade-record-all]of self2 E0 N" x7 _! k" @* c
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
1 Y. Q) G9 Q" A. @1 f9 ^! E
& V5 S& U+ W) C( s+ O
set [trade-record-one] of customer item (([who] of self) - 1)
5 }8 w- V8 T+ N5 E6 d# N8 [[trade-record-all]of customer
' n) o, ]- g0 I- m

2 G2 A: {$ \' {6 a, aset [trade-record-one-len] of self length [trade-record-one] of self
9 o5 h- g/ m9 h* i

! i  ]( L; i! F7 ?0 vset trade-record-current( list (timer) (random money-upper-limit))

" y7 l2 M! |3 }/ a# Z, F
0 N9 ^2 {& w+ Xask self [do-trust]
$ ^' Q* z/ f$ c3 Q5 P1 q5 V;;
先求ij的信任度2 I: B4 c( j" D9 `+ u. i
7 _. J+ ^2 ?4 _
if ([trust-ok] of self); I6 k- M& j+ }1 A9 M
;;
根据ij的信任度来决定是否与j进行交易[6 Y& W0 u3 ]  u* g
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself0 Q2 a" W: k, F+ w
/ p4 C% p' g$ T+ h
[

( o0 @7 M+ l/ l3 U
% J* h6 d" {& g$ ado-trade

" N8 I1 \8 ^- b9 F7 Y8 t
. {. h9 z+ z6 D0 `1 s5 M; mupdate-credibility-ijl
- H/ B/ ]6 k; V4 s% H. J" l

1 v( `; U. E7 L% S# c0 Z; yupdate-credibility-list# K; E5 Q9 H6 i& x; `

$ `# z# S: ^' l. j
  q- ~3 k0 ^( U) s% X  z% `' ]update-global-reputation-list

  R" Y! Y7 l; O, ^: s( m, Y& Z' o; P. y' \( C3 U! ?3 o
poll-class

* {. d+ H4 @+ S6 O5 I1 X
1 Y, F  f$ C- w+ ]" w; Nget-color
0 x6 d& j. ~; z6 m! h

7 y' W( ^; u! d]]
* b8 B9 D% c# H" F/ r& U- j5 B% F' {- [. F5 M. e
;;
如果所得的信任度满足条件,则进行交易
) `  Q9 |3 O4 _$ Y1 `; o6 \: ^& W" y
[
* x3 y7 L+ t( ]1 w
$ l8 w9 G, P, d& w
rt random 360

/ _9 H- o6 }0 d/ _
8 B8 c0 {; r- Jfd 1

! H  I! U& s: N; p% ^) `. d0 \% ]$ k/ u1 T8 g# c
]
. B  E- }' V- b7 m

4 I2 x/ |# u+ Xend

: ?! v! V" U& \/ Q+ z3 t
' d9 a6 a: Q0 U3 h: ~% B, Q; Lto do-trust " W3 C3 T$ t; ?8 j0 j
set trust-ok False: m( {3 `/ \) L3 M3 h5 o
  D4 x( w- h' I# t5 |

# i" J% s1 v& b( Ylet max-trade-times 0- p# ~% _/ T* Y* o4 X
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]/ B9 ~- g9 O% v
let max-trade-money 0
8 s) w. @6 q: F3 p, Q5 t, Yforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
8 c/ |/ z( ?, L3 M1 }- Xlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))1 z; T2 z5 d' f$ P4 [" [  S
' n/ u) {7 b, ~# i
6 T0 J' I0 s  Q& ?, p9 l- t
get-global-proportion3 Y8 v6 W; |2 V( h) |! K2 o
let trust-value: g" V2 I: I3 n" e$ G# @; e4 k, k& D
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)

5 v. f5 R, J, @; M; Aif(trust-value > trade-trust-value)
# z( i' k0 J% H) Y$ ]5 `8 X[set trust-ok true]
" }2 k  `) H4 Z- y- }$ aend0 _8 r" v% \. _$ |. A6 Z  c
  ]" y' A2 g% j" z4 N
to get-global-proportion
/ b9 s# f9 |# n9 k  f4 W" difelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)+ b" j9 v9 J9 X+ |  {. r
[set global-proportion 0]
  n2 |, |' }. i& O- b5 T[let i 0
! A& n6 f) g3 R! W5 v4 D: R) Vlet sum-money 0
( Z: a, J/ l+ y4 m' Q; Xwhile[ i < people]
1 q- F  z1 P2 T' m/ D1 A[6 s; r& O& l" E% o4 `( t$ u
if( length (item i
' B- P# L5 B- A[trade-record-all] of customer) > 3 )
3 U8 i3 d5 W- ?( W: i
[
9 a; D7 b2 f8 w: ~) n9 Vset sum-money (sum-money + item 2(item i [trade-record-all] of myself))% Y- q  p6 r8 D6 T4 `: I
]
5 n/ W# P# r; D]! Y$ ^5 t  v6 w6 |" f3 s$ S, f
let j 0( [& D6 _8 h' b% B! q2 ]
let note 0+ {5 Q$ ?0 h' r) M1 b& q# A
while[ j < people]0 S1 _# w! v1 n2 r  @9 q9 m& g
[
3 N; Y" n5 S6 _2 D1 m+ x# @0 zif( length (item i
5 s+ ?5 ~' f: a( _[trade-record-all] of customer) > 3 )
- K, a) |* c4 P2 n' e
[
5 G# c! I# C& Jifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
6 _  D7 N  A: j[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
& R* V" R2 t3 ]# [" r[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]4 |" M; s/ Y* b. M- L5 ~; R
]8 _) N/ `2 N" s5 c, ]+ y
]+ }- C8 N# \3 @+ ]7 N! C5 z) @
set global-proportion note
  x" T9 L0 D$ p0 h" @! I]
  r1 u+ e# Q3 ~' i  ]end  H0 {) X8 O: w9 k" b* u0 m! {) C
$ i' O% D/ k6 m6 p
to do-trade6 Z" O, B9 \& U9 l
;;
这个过程实际上是给双方作出评价的过程: w6 u9 t3 {& L
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
5 _3 [) h+ Y* h& Z8 [) @. @, `6 Zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价. F0 O& l3 y$ u) o( g6 h2 y
set trade-record-current lput(timer) trade-record-current
8 O- K$ @( f/ G- r3 G;;
评价时间
: L% r/ p4 L+ J7 B, Vask myself [8 \0 g. e% n( V
update-local-reputation
+ l6 f# X. R! i+ p$ x3 Oset trade-record-current lput([local-reputation] of myself) trade-record-current
( Y1 f! v" v3 s# E]
  z4 H  r  X# P0 |4 Gset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself3 d( K2 ?4 F# A9 b, X3 O
;;
将此次交易的记录加入到trade-record-one
( _- k( d) s5 ]set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)3 _9 B7 J3 e5 h, g0 ]3 A  Z
let note (item 2 trade-record-current )( l0 J0 p5 _# L5 W$ B! F2 o1 I/ v
set trade-record-current
/ y+ V0 g3 m) E0 p+ H3 f(replace-item 2 trade-record-current (item 3 trade-record-current))
/ O, F* L+ |$ s& D
set trade-record-current# D6 ~. @5 \) H( R9 [0 i; J) S& l
(replace-item 3 trade-record-current note)
5 z& S+ K: A2 U) N) F7 O- X7 ^; W: N$ y  s/ q/ U) o5 B

2 A, W: T$ }' G5 [7 Z) `ask customer [$ h2 n% R5 |' f* E- |0 M
update-local-reputation) u$ P. n& \$ A. Y- T' Z9 r
set trade-record-current7 A  i: c, f8 t; c" n$ Y1 S2 U
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
! o0 h, _3 }% N
]
; u$ _' w$ P0 b, {, ?) v: ]9 h8 v1 h/ s
2 G, t* T1 G' B5 |( O
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
+ l& t, R# a# a$ ]5 @9 e

: W+ D; _& r$ r7 x/ lset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
4 Z& z# x. f4 ~9 };;
将此次交易的记录加入到customertrade-record-all: S( E# _6 Y' c) E8 E
end5 ~% m0 |2 E9 Z2 ~. r
4 ?& g3 |: [1 z% N6 R- H4 M
to update-local-reputation
. \3 V1 y! g5 o$ T" Nset [trade-record-one-len] of myself length [trade-record-one] of myself2 v% e( m/ f- f0 q

* Y* L; V2 n) G8 w
. `. r+ t# x. l+ T# e' i; l$ |;;if [trade-record-one-len] of myself > 3

# a$ e0 T  C/ A5 Dupdate-neighbor-total( A1 |; c  V0 \! y( Z6 y
;;
更新邻居节点的数目,在此进行
, j1 K$ p" [- J1 Q( {' i1 k3 |/ Dlet i 3- `0 P; t, u: r& U0 T! O- v3 x
let sum-time 05 r! B$ u! C  W. b7 z# h9 y( V0 e0 O
while[i < [trade-record-one-len] of myself]  y# ^. A  Z8 e! U; z& R/ F, k- J
[
2 G+ K' o4 X6 ^/ v8 n8 ?set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )3 V6 ^$ a& G" [4 H, _1 o
set i5 u, P5 Y2 C9 f+ b3 w; ]& Z5 {+ \# x% K
( i + 1)

4 @; H/ T& n& r: B]# [4 o3 Z& h0 ?( ]! Q
let j 39 o7 |  {& n% s* W; Q( n
let sum-money 0
' @% `* M+ Q* H0 swhile[j < [trade-record-one-len] of myself]+ y; F1 R' e9 {, M# J7 k
[) F3 ^' p! [" k: J( l
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)9 a; ?  x& M2 y9 ]9 s$ i; f* o1 S, m
set j
- i, u2 y$ u7 T! s  i7 L6 Z( o, W( j + 1)
8 n. A; y( f5 }
]
6 J+ [: C$ m0 c. [let k 3% J7 |) j! o) x! m! I' c" k' [
let power 0
. U' n, {: g. C, ~. Elet local 06 z# x3 _% B$ u4 Y3 m3 }2 G  h/ A6 u
while [k <[trade-record-one-len] of myself]2 K3 q( V! X- @, P5 m) o
[9 I, Q! A2 F4 [4 n' _+ ~0 o3 R
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) $ I+ G- R& Q* @4 A4 I
set k (k + 1)
8 f- L& H/ O- ~& f: R! s& r/ u: K]
2 L1 G  ^* }  C; v. a) P+ l- Jset [local-reputation] of myself (local)
) U9 _# Q! k9 v) J/ Dend# p+ `! A/ m. w0 X# D

' n; |  Q7 N/ P7 r" p  K& V5 ~4 {to update-neighbor-total
2 A- r7 u8 D: w" _7 b8 U( _3 t9 g5 o$ z) r% x
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]: \9 t/ p- i( O  B! y

! w, L$ w2 w: T) G' k8 Y( ^. d

  v- k! W1 q# b+ |5 nend
( U' T+ w. r1 e3 ~; @& {# G* h; J. ^& g
to update-credibility-ijl / s5 i' L8 N' a% {' J1 E% L0 s
* @7 ]7 u, ^' B$ o3 r
;;
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。5 \7 g; h7 p+ Z$ }/ q3 @2 `2 T
let l 02 p- k0 V3 P& ~7 s( f  N
while[ l < people ]
& N* R0 }6 I- V# l) m$ T;;
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
" O! w1 j- [) A9 L" {7 Z; P6 n[2 v. F9 P* \: x1 y+ q
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)# _0 g% d) @. E$ ^+ J
if (trade-record-one-j-l-len > 3)
% E" n, R8 D. C# Z[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. M+ K$ ~0 W& d# ]9 i
let i 32 X0 y7 P9 D! e$ ?
let sum-time 0
- |) _. U( o5 W$ Bwhile[i < trade-record-one-len]
; ]* E# t  k7 g[
1 D# K: K% A) ~* e( s( `set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )8 h: _/ x3 W9 B; s% ]7 ~7 Z
set i6 q: Q1 a% d' ]
( i + 1)

, s1 }) G& L, a& T/ M. \4 h]
3 z6 ^! c: a  w+ w6 Plet credibility-i-j-l 0
6 `2 K2 V9 Y9 m! l& r; z;;i
评价(jjl的评价)
" l2 e  e. T- Z$ w. R, N* _9 o0 t* {let j 3
' z( e- ~+ v& H$ L7 G9 Rlet k 4  o. y6 I+ g5 V0 V" T
while[j < trade-record-one-len], O; _: w/ E2 \# q# X. U5 F
[
9 o: y2 p2 @! Q9 Y4 Lwhile [((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
: T! j' a+ V4 c  |+ Aset 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)
! s9 h5 {7 g: i  ]set j
" y; z: `8 p8 l% t( X0 u8 y# d) I( j + 1)
2 Y& v4 W6 D7 f2 v  C+ y( v
]- a# x- b) }% `4 P1 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 ))+ X$ d0 r# I) q6 _9 A. n

$ l' {% ]  m( c; {: v# B2 t

* |3 e& P$ Y4 g% A. X6 }' `let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))4 B  r$ Q1 H5 C+ }
;;
及时更新il的评价质量的评价
( T1 E! n4 i, n# z" I4 W' Q5 Kset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]2 b7 r% I: P( {; }% K0 b
set l (l + 1)
. w* M0 D4 Z# w% Y' ?]
/ `/ A% \% s- A  r1 Vend1 H( K. J9 b- X  n& Y. C
8 U! \, F- ]' }* y
to update-credibility-list9 Y) R- h  f5 x% l1 d+ h- }4 J6 Z, ]
let i 0: `9 S5 s4 G( v: z* Y
while[i < people]
% j; M1 ^' |6 l: r8 S/ ?[
+ n, x  T2 m+ \% k' Llet j 05 P1 u& ?/ `3 o4 w* {
let note 0
6 P5 i! u, U! Q" u, _let k 0
: g. @# {! d6 Y$ Z9 j0 }* k;;
计作出过评价的邻居节点的数目
% ]9 F3 L+ ~* Iwhile[j < people]# U5 _7 @' T" y
[; G2 G- ~* R) ~6 i8 }
if (item j( [credibility] of turtle (i + 1)) != -1)
3 K' o5 f* K. n9 S# e% |: ]9 P;;
判断是否给本turtle的评价质量做出过评价的节点2 L' M9 d( R& E. }9 F
[set note (note + item j ([credibility]of turtle (i + 1)))% S# H7 p8 z2 _. T8 X
;;*(exp (-(people - 2)))/(people - 2))]
" H8 u0 a- ^* l: ~. s) _
set k (k + 1)
5 ?$ t; R$ t( q3 A2 p4 W8 f]/ C$ I3 h3 b" r6 U7 Q$ z& n# [  O3 k6 ]
set j (j + 1)
: M' Q. ^/ W8 q% g  z6 T$ U2 A, O]- {) ^& O' l4 r# R1 a+ L3 D2 a. A5 r
set note (note *(exp (- (1 / k)))/ k)
+ v7 K) b+ T7 Q5 F0 u$ P: ^6 {, hset credibility-list (replace-item i credibility-list note)
. M  I3 v- V' r2 @. j: @0 s$ dset i (i + 1)
- h. U% I2 z! s. L]
5 B7 {- p$ n6 D; x9 {end( D% E3 }: U9 R/ P& E
3 W! X! C! N! r$ p
to update-global-reputation-list# F; c* y# `; S% @. {) \6 Z3 ~
let j 0/ ?8 q* K1 C8 J- q- I' d  h
while[j < people]
- L' |3 ^- L# G[5 _  F% t! m5 a8 I  i
let new 0) K$ p/ H, w/ R& j
;;
暂存新的一个全局声誉* J2 P$ K- q' u. v$ ?
let i 0* Y7 a$ M# Z1 J# M
let sum-money 0) P" }$ Z# N6 |( d. G0 R4 Z
let credibility-money 0' _# O* g% ]. a& _: Q
while [i < people]' [/ h4 T' Y$ ~5 M# `
[
% @: A' ^+ k( b- W+ c8 n* _set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
8 \; P. y8 C. Q8 F7 Q4 F& ?5 Z5 oset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
9 r8 L& B. d5 R- H" N5 W4 Oset i (i + 1)4 L3 @' z! ?- I, S
]
& H, [2 q  g- `let k 0  P, P! t6 f# V) T3 O2 j9 a
let new1 0
! a0 w# ?7 Z* M- a- V* p3 Uwhile [k < people]
" f- [1 I9 {, y) f4 |9 H[
/ Y: G, p4 [& O6 k9 Rset 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)
+ f, u" ?6 S( o6 H& H- ]set k (k + 1)* R  ?' R( j; \0 q
]
' D3 U, m; X4 m& `, R5 [" Qset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
% T6 r" @: i- e' L  _! Wset global-reputation-list (replace-item j global-reputation-list new)
1 s& r( x& T7 e2 g! z* r0 X3 y/ Eset j (j + 1); Y/ m8 H. S" K) v" D% [0 k
]
2 o" d5 k# n( B8 O$ d8 B/ |- Rend$ I0 W) n( D8 @( r
# y' f; I/ n9 j5 s2 o: b
- h: D" w6 n8 M5 h. G
6 |8 G/ v4 s2 b* A4 C
to get-color
/ h9 i" _3 }3 E( S
+ u$ s3 n" y: B& Zset color blue
' a! d9 o: {" ?2 j/ b7 E
end, t) Z  ~0 B6 Y& t
3 h5 \6 Y) w% e
to poll-class
" v3 h. J# x, j# W' u+ iend
: b/ N0 Y& B/ ]
- g9 W" m/ w2 Q4 \" ]to setup-plot19 b' W6 o4 Y# Y
0 ?( l) |* s9 ]) J6 L: ~
set-current-plot "Trends-of-Local-reputation"

. e' o0 P8 A7 O2 V: ~* ~  l" n" @. G7 A+ Z7 P( y. z. C( W
set-plot-x-range 0 xmax
( F' ?5 B5 M" [+ S# a
$ q1 i3 b5 g/ Q  U9 q
set-plot-y-range 0.0 ymax

- O4 D$ x8 _. Z! aend
) p# X1 Y5 z$ G  ?' z! m
( v5 Z! v0 B6 N: ~; i! T8 u# i3 Rto setup-plot2
9 a; f  X2 U9 t; h" l+ o+ I
$ x, l( P  p7 O3 s5 T4 G$ D6 }set-current-plot "Trends-of-global-reputation"
# q$ v8 ~/ J' Y! `3 \! w4 ~- o) K+ U
: D$ A) [! v; \
set-plot-x-range 0 xmax
! j0 _& K  j: z  a, ?" w* ]

$ N4 i" }2 y0 E  J% y5 z7 k5 p. n4 ?set-plot-y-range 0.0 ymax

& h5 z3 Z/ K8 [+ Rend- h% C+ u+ i# m* g/ S8 `4 ~

7 H( b. g7 K" d* sto setup-plot3/ o& f4 p# {% ~  B* N; o
1 Z0 I# N! ?  D  Z7 _( f, U# y
set-current-plot "Trends-of-credibility"
, m8 d: }. k4 ~8 |% G7 d
" n/ ^4 ?! n9 R  l- S8 H
set-plot-x-range 0 xmax
. x5 \9 Z# O  Y* h& F

# ~  n* _% V7 h$ @set-plot-y-range 0.0 ymax

, p; n! r) c) p- N2 K2 b+ V0 ?end
* K" b: R- I/ C, E
* X0 R9 \% d4 q6 k6 k0 \to do-plots
8 I( i# h/ @7 {' Yset-current-plot "Trends-of-Local-reputation"
1 p9 M7 L9 m0 X$ s3 Eset-current-plot-pen "Honest service"
& N6 ^- @1 x( \1 N' ?; f$ |end, q  e* Q# b$ e7 m# b5 Q- i$ J
) E: F0 v) q# z6 x# _
[ 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.1 A! Z- ^5 r+ r& s2 B
" j3 R  N/ ~  X
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, 2026-8-28 16:26 , Processed in 0.020805 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