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: 17231|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:. }) P: v, Y. J5 T9 W/ _* h, h
to do-business
8 H* c* V- G# e4 N rt random 3608 q( U7 @# }) R) x. }) G/ T/ t
fd 1
6 Y4 B: M8 N6 D6 @# U! _ ifelse(other turtles-here != nobody)[
, I% w+ f8 G/ o9 g: t8 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.* ]$ `/ ^- b: ~5 b
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
3 [3 g0 w; C7 ^! _9 l5 a$ L7 |# ?   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer9 C& U! N! D6 ?# ^
   set [trade-record-one-len] of self length [trade-record-one] of self
7 `' }& M# v4 h' C   set trade-record-current( list (timer) (random money-upper-limit))
, l2 [, _4 ], j8 h; Y5 T, y/ S7 f  g, Q6 k' G- o+ ?( U7 I/ s
问题的提示如下:) P  \* e+ u8 b& Q9 o; l% u% e
6 a5 d( S) b8 N: l1 K% l
error while turtle 50 running OF in procedure DO-BUSINESS: N# O3 M; `0 F# ~" B2 D6 O
  called by procedure GO
0 \0 Q6 N# B5 C8 Q4 QOF expected input to be a turtle agentset or turtle but got NOBODY instead.! l4 \% g& ^7 u' }
(halted running of go): u/ K/ _$ x8 F: A) E& \

  e+ @3 Y2 k0 T! V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~~
; g0 [0 b; U3 T' \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
+ j3 _( u4 V4 \$ Q4 s. e+ e) k3 n; i5 Jglobals[
5 L+ Q* ]  Z6 pxmax
$ l* J& S5 t$ |  A" H: Nymax, U0 T- ]: v' d+ x3 G+ m
global-reputation-list: {6 F2 d0 k% N5 L- {

4 i% f' o) {9 }$ c8 e4 {+ O;;
每一个turtle的全局声誉都存在此LIST8 l' O8 w1 m% q) b6 J
credibility-list
! U* k! ~- H% s% z;;
每一个turtle的评价可信度4 `) }& s1 v$ j/ y" f
honest-service
/ g4 ?% l1 X+ I; |# m9 Munhonest-service
  q6 J$ m( t0 D3 k  G( ]oscillation
& @  a( }- o) f& x: _5 @rand-dynamic
" E& o0 S- `) d' ^]
: l; B/ }$ L, D, @1 h0 b! X3 Z
, R$ z# x( b+ E' h8 _' r5 {' oturtles-own[
' `9 ^+ J* o5 J) T( `/ Z& itrade-record-all
; h$ w* [1 M4 u; e( Z$ K;;a list of lists,
trade-record-one组成
  y; z0 m, S; z/ |: x( ~trade-record-one+ D& r* }1 s  p; g7 k2 `4 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
7 \# i& Y( O6 A* o" v7 h7 Q: {  i8 P% R9 w! b# J, Q( c  a
;;[
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]]
' {' d" L, [0 a* Y1 ?8 etrade-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]0 P+ O& P1 r6 h  G7 A
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
% v6 C- J5 N. Q. rneighbor-total
( E! g/ a; m/ a' i;;
记录该turtle的邻居节点的数目- N; D/ \9 M# p) D6 l/ \
trade-time/ ]2 }4 y8 f) l  d
;;
当前发生交易的turtle的交易时间
8 m& |8 W% f* i$ G# v* p( }appraise-give
8 J( W! K* d/ |;;
当前发生交易时给出的评价2 P7 X/ [2 @0 o' \, ?) l+ J8 B
appraise-receive
) r! L" }' W$ f;;
当前发生交易时收到的评价
6 ~2 v2 G, z7 Oappraise-time
8 w% c6 |: j/ P3 ]  ~3 u! r  }: T;;
当前发生交易时的评价时间
2 i, M& O: _6 Plocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
/ x8 B8 ]: @& Otrade-times-total- d& E9 f( m. o& F: K
;;
与当前turtle的交易总次数- K- T6 V. H. R$ e6 x
trade-money-total
, s1 r! g5 X  h6 {% ?;;
与当前turtle的交易总金额. M% D. M, ]8 f; [' r1 u3 J
local-reputation
& J/ l/ c4 r/ f  oglobal-reputation; F9 |$ Z# k: v) Y6 ]. f
credibility
: [4 {! v/ x: {2 u1 O;;
评价可信度,每次交易后都需要更新( e. p. r" f5 j9 x9 u8 O
credibility-all
# p9 [! n- L, m* d6 ]1 \) g;;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5 H1 s: L: r. y6 d% T$ I/ q
- B$ Q) ^( [: U" x1 [
;;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/ e1 J" Z$ [9 u* O* I, a
credibility-one  Z) `8 ^1 x8 ^8 z6 r4 G5 [8 S
;;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
  |6 P' e6 V' e% @global-proportion9 @- g, ^8 o; n0 s8 K
customer7 @0 g9 s% T& s" Y$ P" R2 Y
customer-no
  c" h, q5 t) o8 j; h( Mtrust-ok- N! \) s* ?; o0 j- d
trade-record-one-len;;trade-record-one的长度* b9 j" v1 ~- d0 L- C
]
% z* U7 w7 A6 M6 A# K$ z3 ]* V7 v7 g
;;setup procedure
) u: W7 ^/ O, z1 q! A8 I) ]4 O2 L0 h! q# s! }/ s& y6 k7 [( O
to setup6 K' {  }2 |/ k- M; O1 q
1 t% ?" s8 p' U# F, R7 w9 E8 O' P
ca

: z( p0 u& P1 Y
/ A" k! a0 X1 Q3 y/ i+ Y$ r) S; rinitialize-settings
' X! [. i1 E4 r! K, ^

+ ~5 w, ~& R5 Z  b$ gcrt people [setup-turtles]

0 O$ t( e0 x# j! f* Z0 M# e# l0 }0 t! }" f
reset-timer
$ |. V6 l! b. F

* C) t8 W4 N% X# Mpoll-class

$ b- P3 d* \! d% i7 J& ?8 e& O8 i
setup-plots

" s+ b8 |# B* F9 A  }# h; u( y, V( P$ T1 Q
do-plots
* g' {$ U/ f3 Y. F4 y, W6 c1 D: L
end$ A  r# X' L& f( @7 w2 A& E; Q

. ?; K. |# f" v8 ?( p: rto initialize-settings
* _9 y# J6 ]; |' B) [5 U8 }" ?9 k+ R3 i5 @9 p3 O8 k
set global-reputation-list []

% T% h6 }$ ~0 B# @$ P# O  q
; a) m7 z% j# v0 y( W) K) |- @% Iset credibility-list n-values people [0.5]
$ [) C- w8 F7 u% U$ u7 k- v9 o

4 c3 O" h4 \( hset honest-service 0
: U8 @! v, Q( A$ i, j
7 O. [- z. O4 h1 _: r+ T4 X
set unhonest-service 0
. U$ r  T) d8 E( {# i. h' s% @
- o  |! m& s/ H& X% Z4 c2 L
set oscillation 0

0 O2 ^* {3 |3 Z2 H- y, v8 B* J
9 V  w" `* l4 z8 ^set rand-dynamic 0
& F0 F* R9 O+ S+ C. ^& p0 U
end
/ x4 y/ v- A! V2 D: r, I4 r  V/ `, y! d( L
to setup-turtles ! u! b" [0 J( _
set shape "person"
  s) W! `, g3 I2 i7 M+ wsetxy random-xcor random-ycor
, g9 _( X8 \* B: Rset trade-record-one []
! J2 g7 t1 o: D1 e, R4 |

4 T5 _. j  f' x3 }$ oset trade-record-all n-values people [(list (? + 1) 0 0)]
; I& {; ]; k$ C. e4 y1 y' E- P- h

* ?0 v* C* v; _$ U3 }set trade-record-current []
& T1 M4 V, D6 t+ q0 N7 pset credibility-receive []/ L0 d) {' \" p5 o. K5 |% l& |/ W$ f
set local-reputation 0.5
4 h5 S$ U+ _# bset neighbor-total 0
3 Q) I# f3 w! N% y3 V) x' ?  xset trade-times-total 0
: @5 M2 V: j' a; ?* \- I4 d6 Dset trade-money-total 0
+ p4 R/ X: Q  P, G; y, @set customer nobody& `) |! ~1 j3 C  t2 i: A+ v
set credibility-all n-values people [creat-credibility]
0 d- n; D" b4 z: Y2 h* [3 A2 e. _set credibility n-values people [-1]
) G. Q2 f7 ~3 a6 I3 s3 Nget-color/ a3 r) c  x7 T
4 v2 ~5 [% w1 Y( @; z6 e
end. o) u( t1 h+ a  }' m$ C

) |  F1 ~3 D0 |0 ~# lto-report creat-credibility
* A1 T3 V; n# e6 }3 N" z7 t" q8 areport n-values people [0.5]* F+ ^0 w7 o  @% n6 {; |! n" T
end+ F/ {+ N2 v4 i* ?6 E& L

* W% v  ?- Y) e- ^9 ^to setup-plots) Y4 _7 f1 E# n% J2 o

" l8 L; S/ y! `* Y7 `, c  vset xmax 30

* u# n6 X) q' r1 b( t: Y8 U4 q  D
set ymax 1.0
; u$ y0 j# r( x; L  s* j: `
. ~. r% f* K, e2 v
clear-all-plots
/ j' a3 P  E9 _/ ~9 \' p' J* L

0 E2 t+ R) R3 ^! F3 Q$ h+ Osetup-plot1

/ m+ k9 S) }2 H2 F; E
5 M' |5 |7 Q& r" Dsetup-plot2

: e) C2 k- s' W; b2 [' F8 ^" y) G4 w. k7 ?" T' V
setup-plot3
  y' k* `5 V5 E+ h4 N
end
8 B& \( \5 b% X- @- v" l/ E% H( T2 _1 q5 b+ \
;;run time procedures
' W* q" p1 u. I/ }( c
7 u/ \: i2 x) H; cto go
' c0 ]/ i1 c& @  M3 \' T2 ~# y0 n9 r* x$ B+ d/ n
ask turtles [do-business]

+ N+ n/ e' P$ `! d1 ?2 y4 Kend
. W% ]5 B8 A( a1 A* d
, a2 I; z- L  g6 o* }to do-business
6 e/ l7 a8 x7 g$ u
/ P' V/ p0 L* ]8 d/ X
3 }3 t" P7 r! e* ^% {2 m+ G
rt random 360
! e3 C2 c" }1 I" r* p% r+ E
+ K$ w$ w- J- O- ~% v! z, T- J5 ]
fd 1

- \0 n" U5 ~+ u2 r+ Y: _5 M" i" H9 g" u1 i, w
ifelse(other turtles-here != nobody)[

. G! ~% i4 P  f  I& g/ `: V0 x+ t1 |2 G& Y' q
set customer one-of other turtles-here
9 J/ d6 Y  e- L% h0 K+ }% j
1 X* {# z  F8 C5 l# q, t
;; set [customer] of customer myself

% T8 B/ Y3 L1 K. u. A% q5 e' ^% p1 f  A$ k4 h; A4 w& S! j+ m
set [trade-record-one] of self item (([who] of customer) - 1)
* F, ]+ k3 T5 m& ]  Y8 B" D[trade-record-all]of self
3 }( j  W# N+ h; K3 E  c3 O;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

4 W% x6 V9 ]; D
6 z/ ]5 ~# d+ M' T5 Xset [trade-record-one] of customer item (([who] of self) - 1)
" g2 I& l5 f$ J0 A  S  t& z# \1 g[trade-record-all]of customer
1 c9 z) z6 k) T: a1 T

1 ~# y8 B7 s2 i0 F, Tset [trade-record-one-len] of self length [trade-record-one] of self
! F5 b, i+ |2 R1 J$ P/ N

" r/ [3 h( Z  i9 ~set trade-record-current( list (timer) (random money-upper-limit))
1 d3 Y+ Y3 N# w
* j1 d5 p# i+ S$ ]; @+ D
ask self [do-trust]
' X& I# S. M- T$ X) o1 n3 b;;
先求ij的信任度' q0 H% d# i4 P6 E- f% F/ H

  M' k6 U+ @" oif ([trust-ok] of self)* L# d9 ?- |2 B
;;
根据ij的信任度来决定是否与j进行交易[
: T' ?8 i% K9 \" v+ T: |ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself. `% f: S3 |; c) l" y5 s
, o5 F+ h3 u* I2 ^- g  K
[

# u# |. ?2 i7 M9 h7 K% E$ o+ a! T0 g3 h( Y
do-trade
" ]" g/ m. q9 O6 L

+ Q1 d& Q4 S( ~/ Y9 r: J3 j1 fupdate-credibility-ijl

! {( Y$ x# ~+ X; Z1 g# i. V/ ?! }7 o1 A
update-credibility-list
3 S* B7 p# R9 w8 t( }6 n* z7 j' U5 q4 ]

- V2 ?; a6 Y+ b9 @
0 a6 c8 K' t6 `) J# C5 Dupdate-global-reputation-list

5 \: Q& U# z( O: F, b' W
2 s* l' w( i; X- S* O. Qpoll-class

0 z7 @" R1 |  ^) i/ j+ U) I$ G. r( p& M& ^! O" n! ^6 a
get-color

0 ^' r4 c/ O5 \% F
! P1 `5 x! |5 N: u8 A]]
3 r$ O& `" Q2 i7 G# d7 q# P1 M" T3 N; L0 q  K3 U
;;
如果所得的信任度满足条件,则进行交易5 M  C2 ]3 @" O5 f+ r2 k+ n

0 |$ }' a0 `( [' }[

+ F: `9 ?3 Q9 a' v) s4 F* e$ k9 x+ @/ c6 j4 ?
rt random 360

2 a6 d+ o* I% F
' T7 j1 j$ A6 H/ g$ Pfd 1

- c& m' k' ?7 J3 ]
/ J0 h0 F  G5 e* X  F]
* T. y- A$ W2 E9 O
5 U# Q, A9 S$ _9 n0 J" D' N. N
end

# }- c( `, p9 ?+ D) X, U/ R
# D6 V& t* e; Lto do-trust
8 e! _# w6 ^0 ^6 `; P1 M' f' ?" rset trust-ok False
5 z  J: P/ E- G3 B4 x: ?- @+ L: E2 E- d3 r
7 U6 q) a' r% {1 \! [, [
let max-trade-times 0
& Y: L9 K+ b6 Qforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]# ?. x% V7 U6 K9 r- O9 F/ N7 P
let max-trade-money 0  i5 u! G0 [+ L7 p+ S
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]5 y5 H. y# S# p& u6 ^# z
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))0 a. L: E: s& d' a0 h  p  V$ o

/ a0 B6 b1 m' J( K  l( e, r3 e/ @
* e) a" c$ K0 u+ v0 e; k4 g
get-global-proportion
+ K, H$ q$ k* E! \* k, Xlet trust-value
7 i5 S- H# s& Y7 W' C# E- glocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

/ M# M( X8 P: p) d+ cif(trust-value > trade-trust-value)
: K. w3 w* I9 e) B% j2 G[set trust-ok true]  X& U+ Y- N3 V8 G5 C- ]
end
" T* w2 e$ ]4 j$ L/ V$ F3 `/ W
; @; u' b4 w4 k6 `2 oto get-global-proportion
2 M, P9 R4 X. E: ?8 {. `- v3 X4 Lifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
, i6 N! D8 p. s% a5 q[set global-proportion 0]
# c  L5 M' _% D0 A9 ?/ ]7 W* |[let i 0, O0 m, l2 R6 z. d* P) V
let sum-money 03 l) {( }: z1 }
while[ i < people]
$ x6 d/ z  H+ `% Y[6 J) ~* X+ I3 n% c
if( length (item i
5 s( _+ O; K! F& W6 ]3 M5 b$ J[trade-record-all] of customer) > 3 )
* W) c6 i) }" N0 o0 f
[/ x0 I$ s5 Y- ~0 p3 ]
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
+ [. l/ l3 i7 i) @  L# E]
7 N  j" P, W3 J]
% h3 k# \" j. R5 S# L  Z* z1 vlet j 0
" M! m# b3 a! I, Clet note 0
& C3 ~/ V4 ^$ N; k  ~while[ j < people]
; k' n: g. c! O" x* x' T[
4 R; u* @7 l) g* u2 q6 dif( length (item i+ s+ p# T5 a* q% {: U& @
[trade-record-all] of customer) > 3 )
  l; k1 D8 Z' S. @& W# \+ @3 e8 k
[
$ M. Y' ?4 }4 Y$ `ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
( b- _3 B2 A; O" w# H[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
( f2 k7 g/ ~/ P! P' D2 U3 l. g4 v[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
, s2 u3 `7 C$ R) E, F* a; z]
! u& L7 y& S8 M' K]& a; y1 N4 D# s# d7 j  o7 X) z
set global-proportion note
& c! z8 v3 @- P; d1 Z]
" v3 K6 x1 ^6 i2 d& P- [end8 Z3 r  T9 Z& |+ W6 h# P1 k. Q

7 }  e0 j. m8 C5 k9 Z- Ito do-trade$ n- T; S4 s5 d. h# J
;;
这个过程实际上是给双方作出评价的过程. w! r0 ]: r: w
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价$ Y3 Z0 L& H: Z$ O: e$ \
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
5 Y0 m+ l* Z, F5 G$ f$ D: o7 wset trade-record-current lput(timer) trade-record-current  t9 y8 S3 G! {! ]# X- e
;;
评价时间# Z0 Y6 a2 _7 d& J5 _
ask myself [, g& |! z  [# p  G) v+ }+ B5 U* W' b# G- ]
update-local-reputation1 Q. e+ n+ Z8 v
set trade-record-current lput([local-reputation] of myself) trade-record-current1 E, O* O. ?& @5 k; t. Z
]) |$ p2 ]- n$ Y
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself( z9 Z4 K% z4 J6 }# C0 o& g# a7 A
;;
将此次交易的记录加入到trade-record-one
( P2 s& |+ v; p+ v; o8 yset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)4 j( M( ~! x% R
let note (item 2 trade-record-current )6 w' p* \8 ~$ U0 g  o
set trade-record-current5 E8 u  y5 V1 ~! B8 m  U
(replace-item 2 trade-record-current (item 3 trade-record-current))

" T* x  X( X+ Q% g) wset trade-record-current4 U' J1 T7 F( @3 j2 _  w
(replace-item 3 trade-record-current note). l; t- P( v3 v4 O& O

, S% Y7 k' j, |0 }

% v! O0 K2 x( e, [1 Y* X. F% x2 Oask customer [$ w, `& x+ ]" |: Y
update-local-reputation3 j* H% w& u" l% G1 L' P: O7 p
set trade-record-current
$ j: F/ G# ~/ \) h8 p  E(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

: n$ p2 I5 r8 g, J]
5 J# D! k% y  m/ z
+ s& L6 A7 c3 H

+ A; ~1 J; {0 s( H; _) dset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
+ q' e/ ]' B1 e$ t2 C0 i7 o
- P" b6 u4 Y- \$ k
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))8 T- l, O& J( n
;;
将此次交易的记录加入到customertrade-record-all
$ p. d* |' h! A$ S* ]- g* {- _end
5 J% @! J4 E1 N# R) v( _8 f" X5 O% \: W6 z0 i
to update-local-reputation; G: g$ F, U# @! }* i
set [trade-record-one-len] of myself length [trade-record-one] of myself
) k! r) Q# x6 E5 ^  M1 ]! F
: _& i. y: }) c' T! B% F% ^( {- J" B" o5 l
;;if [trade-record-one-len] of myself > 3
1 A6 K3 S6 @0 N: G& P
update-neighbor-total4 K( j, U6 E/ E! R% A
;;
更新邻居节点的数目,在此进行
. t4 M; [" c) }; z& t+ Glet i 3
) Y" E* d2 Z) u- x( A( l6 Hlet sum-time 0
; u4 A: k( U5 l4 N; swhile[i < [trade-record-one-len] of myself]
; [" N. M3 E3 v[0 x( e7 U) ]. a" e9 [
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )* \' C  }2 l! K- t* q
set i
7 V; F3 T3 ?3 ^" ^9 r( i + 1)

6 {& [4 j" k- X+ u* @]: [3 L  U6 S4 ^" y) [- t
let j 3
3 t, i! K' S- W8 M/ E% [let sum-money 0
, b3 w& {8 d' Q' u2 K; l2 uwhile[j < [trade-record-one-len] of myself]: S, ~9 ?! r2 y# o+ s
[
9 ]% b+ |* j: S6 q7 iset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)( I6 R+ u- i; y3 j
set j" v* g% {, n8 Y1 B+ Q& l, c
( j + 1)

2 {( Y" ~- @) G+ a5 r]: g2 M8 D& r) v
let k 3
; f8 ~$ w, l8 ulet power 06 P7 T) l4 R5 b
let local 0
# E/ M7 B7 H& Z" ?5 Nwhile [k <[trade-record-one-len] of myself]4 y3 S7 r. `9 q! Y5 m
[5 m! ~  o- P2 E. f  i
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)
& J. _- G( U! z6 X9 r  c* `set k (k + 1)
% |; B8 w% D. q+ K& [9 E# P]9 v4 w- c- m( c# O, Y9 N% g" n
set [local-reputation] of myself (local)
2 S2 w% n4 {( i% `1 {end% {, k2 p/ P! N

* Y* X) c' w% _* c2 vto update-neighbor-total
  U  W7 S* j5 F3 W! G
$ x! ^! b9 i- T6 v1 z/ w8 N$ ^if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ], V- o3 C; W$ Z, X
9 O$ @+ K2 k# E( ?( L% `
; Y" V2 _8 _( l# c+ F
end
% _/ ~8 i* B6 v- D2 F
- j6 b" N$ K+ u( v$ T- hto update-credibility-ijl * s5 S6 ?1 e* \7 W5 v5 u& J

6 ^" E* Z* h& u/ i% B;;
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。
  D5 J9 y+ c' p! alet l 0
6 g0 c: l* j" r6 @* F' B- hwhile[ l < people ]/ m- W( [! B" p; L/ H: y* 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
9 d2 g8 t8 j+ X: r4 j( s; ^[3 v9 S% O& s$ {0 P
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)4 H+ @0 ?/ a; Q& a3 h& ^$ t$ q: k
if (trade-record-one-j-l-len > 3)" G9 x% _5 y/ v: C
[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
' S8 Z  K; i+ `( d9 Clet i 3
, E% L/ I2 x9 I- t& ~let sum-time 0
9 g4 k) d$ v, ~: h$ a* lwhile[i < trade-record-one-len]
2 Z4 ]) b( r! f* |[, y; U9 V, n  X3 z# E! U  h
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
; }4 V/ T3 k+ B( t# O5 N2 Yset i
- A8 ~0 R- w5 Q' D: J( i + 1)

: R, V) e: M- k' R+ @1 M]
# k! D- g) I. a0 S) a+ d- Plet credibility-i-j-l 0
: R' s1 R5 i6 k/ u! };;i
评价(jjl的评价)' I' n  I: S2 b2 h4 p* ~" M6 I8 W! n! w
let j 3
3 y4 B8 C  w, Z2 ylet k 46 g6 I4 ~1 w' `+ @2 Y+ g
while[j < trade-record-one-len]. d, S& r+ c- A9 V2 ~: q$ D4 J& E
[$ g1 j7 @& b2 s5 p  j0 D
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7 d/ V; [9 z" {
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)+ n2 r4 s( z+ x2 y7 r5 [
set j3 X* R' Z  ~" ]) Z; u2 S! A
( j + 1)

) ~* W- r/ j4 c3 I0 j]" O3 E% M, U% O3 g2 K' T4 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 ))
! ^9 i; }/ ^  e1 d3 t; x/ z
! g  S; e! c1 g& u2 D% ~
6 G5 n; d& y( j7 y
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
( B+ u; a4 @. c" t2 O& I- L;;
及时更新il的评价质量的评价! J0 s# d! M+ Y* ?9 d, q0 I
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]8 Y+ s# x4 ]% N! }: K0 T3 }' I' @
set l (l + 1)8 h" E( U/ e; k* U1 ^. d
]/ a- S  ?: H; x: l" K
end
2 P, Q( D! i+ a$ c1 f. @, M' x0 I5 n$ I
to update-credibility-list7 e1 {6 j4 b" L0 j5 `8 U' }
let i 00 x! e! o; T5 ~) H' C% \
while[i < people]
: P  d4 o3 g7 h3 Z) V[0 ]" F# Y' c% f! W8 T! D4 Z
let j 0! V; E/ W/ O+ F- M( w0 A
let note 0% o5 G; K. F9 a) |% U. D' ~
let k 0
( x' l8 ~+ B3 K/ P;;
计作出过评价的邻居节点的数目
0 Y& \) b" c4 s" e& _while[j < people]
! a6 z/ A# z1 C7 U/ v[6 t% v, O' F% h( R, f4 N
if (item j( [credibility] of turtle (i + 1)) != -1)
: _, f7 Z* f, x/ [* M;;
判断是否给本turtle的评价质量做出过评价的节点
5 v; G) K0 t- k  @[set note (note + item j ([credibility]of turtle (i + 1)))0 C4 q* y% m1 y( Z
;;*(exp (-(people - 2)))/(people - 2))]

0 I) I2 Q5 P9 Y* q# k. A) sset k (k + 1)$ j$ m2 I) m" G, D: Y0 I' P
]
, |, k% {; @# A7 X% Y1 ~  J9 a7 ^- fset j (j + 1)
' S7 |1 k/ K* h$ m" w]
. R$ `8 a$ F3 |/ ~# eset note (note *(exp (- (1 / k)))/ k)
1 o& c! M" \+ L0 F9 _set credibility-list (replace-item i credibility-list note); [- W8 c$ [: y2 _& X
set i (i + 1), L3 y0 y# |, J$ x8 {# e* o6 J
]6 Q4 p* X- l( h
end
5 I0 j2 @. F! C
, X9 I- c. Q8 R* yto update-global-reputation-list* U. l2 J# s; \4 W. u  {
let j 00 N, z/ W9 M2 Z, @
while[j < people]7 g+ U/ Z, b. {  E) e* I, j
[+ o$ v4 X# Z% `) k  Y& j4 p
let new 0+ }# g( v( S5 Y9 d# e2 E
;;
暂存新的一个全局声誉
& g: z/ B- r& H, t4 ]' N: [3 Rlet i 0
* e% `; b3 r6 m/ `$ |5 m$ M3 E0 d2 blet sum-money 0
, i& ]! c1 i( J* K9 C; ^let credibility-money 0
8 Q! T7 T# R+ {2 F9 Gwhile [i < people]
/ s9 w+ [3 `8 ^[& W( ?) ]# U) E, Z
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))8 u0 |: {( I* }7 q/ b8 k
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
' G, _/ g9 f/ v* Aset i (i + 1)
! r( r" l& j9 Y  P]
* @  u. s* ?( g$ Clet k 0
( R7 i. n# D5 v+ o) L  v0 D1 olet new1 0# Q1 T$ E4 c7 J+ Y0 k- ^
while [k < people]
0 y# N3 _! E. G  c2 z[2 w0 x/ W' i% \& v
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)# Z+ z1 d: H8 o9 Z
set k (k + 1)' T2 p, z; n) R# C0 g- O9 w8 Q
]
$ l" P. Y( n' G/ w" Z, yset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
" ?5 ?% t" j6 t# Sset global-reputation-list (replace-item j global-reputation-list new)( s. h6 z! A$ X5 B+ P2 ]
set j (j + 1)
4 M8 Q+ k% m+ u2 }]! n3 {- d9 l) Y7 R/ Z
end
0 w  X* o7 u1 k. M- g0 F$ P& T4 P$ E' q( C8 d

& `; |# B& V( S% i4 E. n. E
2 N! w# @$ S* @$ A  ^to get-color: R1 g2 }, }& O; G% z( b* h/ \. k- j

# W# Z, p5 d& N- h4 Hset color blue

+ \5 i- Y, U& K2 q* Wend, \& {* _- q1 b9 Z& y1 k" z
6 q4 t1 G8 G$ r& O! n$ r; q
to poll-class, z3 ?7 _: j& b' \; Y
end) ?8 H5 @/ Z* A# K

5 T" @/ m- e2 d! T; ~to setup-plot1. i  g& Z, s3 U9 n+ F8 c

. X, F7 A% l& O# @, h3 Aset-current-plot "Trends-of-Local-reputation"
& O9 o" F: T, q0 _; r: {1 S

$ E. J$ J2 C* ?" H" J- A; g0 I+ D( Rset-plot-x-range 0 xmax
: h* D  D+ G- h' ]- R4 c5 C
, Z( r2 [9 C- ]* J- _1 n% C' n* k
set-plot-y-range 0.0 ymax
8 e9 H$ h- K9 R9 [; _: p) ~
end% s4 I# u, H1 L& _6 K! {$ s

" d6 D" A4 W, q; ~$ ~to setup-plot2
9 m' m) @, a2 n* w5 G- l. @  e) s+ Z! c% J; ]. B
set-current-plot "Trends-of-global-reputation"

2 t* n% U# C5 P# N1 q: Z/ W; ^" v4 I9 l
set-plot-x-range 0 xmax
9 {! p! Y& l. ]0 g9 d( k

8 N+ D8 h  _4 bset-plot-y-range 0.0 ymax

/ Y( @# Y; b& J9 p# O' J: Dend
  f+ d4 G2 _* E, S* g3 U( D# T% B8 r7 I8 Z& A3 {" y5 ~( m
to setup-plot3. R; |, e2 N+ t3 s
/ V/ s5 ^' {, @! K
set-current-plot "Trends-of-credibility"

& C/ J- ~- t0 K2 M0 m% }/ Y2 s/ z/ ~( ?) J
set-plot-x-range 0 xmax
: V; ~, R1 i, q* @
- e9 `5 v- Y- U
set-plot-y-range 0.0 ymax
0 K! i, J0 H" u! \# l' e: b" X( P3 a' S
end/ z. w  B8 x, k* T7 y4 \# F

4 @% s* @# U) r! Qto do-plots" o  f% Z% z5 X$ \8 f- P
set-current-plot "Trends-of-Local-reputation"2 ]8 e3 V! ?% m/ K
set-current-plot-pen "Honest service"& m. e) T8 q  g0 O2 ^" B" K
end
* X( v' t4 v4 n* d3 L' ]6 K
9 z% h+ E" v6 `& d) v( o( d% L[ 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.
2 e) e% a7 P* ^9 e4 p
& D* f" N$ u" b5 L$ h$ \- U/ `/ 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, 2026-8-6 17:12 , Processed in 0.025394 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