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: 15859|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:
, U/ [7 x3 }; p9 t9 X$ e# Ito do-business / e8 h' H* p; d
rt random 360
5 F( b' d. [+ d7 `1 k; G fd 1" [" ?# O+ Z* n, U
ifelse(other turtles-here != nobody)[
+ E+ K7 x2 J) ?   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.
0 ^3 _  d8 c: J4 f" \: N2 V3 i2 q   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
0 n- E8 S* B& ?5 z   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer, K; N0 b, s. O/ |  O' k! L
   set [trade-record-one-len] of self length [trade-record-one] of self+ n9 x' @) L8 W7 x; a5 F; u" q
   set trade-record-current( list (timer) (random money-upper-limit))
. S! i; Y0 O: G2 I; c
0 S6 e( }9 o/ H问题的提示如下:
" e; A3 P# _. M. A9 n2 m2 l: W& i( t5 Z, f+ u, O1 [
error while turtle 50 running OF in procedure DO-BUSINESS
4 k3 F" _' ~1 |3 W) T1 J  called by procedure GO
, B: e* Y, x. z! ]$ T) HOF expected input to be a turtle agentset or turtle but got NOBODY instead.5 Y' R  T+ N7 ^( U! G% k
(halted running of go). G% j' U. \+ i1 z* ]

! w' K. @% P/ U8 Z% t6 d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~~
$ M8 ~6 z3 @( E$ y" l, i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- q) Y! x) Y" O7 M9 u0 o
globals[
9 c" t* p& i+ I" P$ zxmax
- s- A: c! v" ^7 O& {) X" H) Aymax) M3 K* b9 B% B' }
global-reputation-list
% F% p4 t0 b; ]) }
0 C" b" Z( \9 M( p7 Q! P8 w0 k;;
每一个turtle的全局声誉都存在此LIST
& I, M" {5 W. X6 @5 I& Ecredibility-list+ b) o. |; _" {" a# R
;;
每一个turtle的评价可信度" I. z- n# T" a3 S- w
honest-service
5 [8 O1 z3 Y0 ~unhonest-service2 C+ S2 d9 [7 o* r1 v5 ~& k
oscillation  Z9 Y  {/ l* b& x
rand-dynamic
& g5 r0 g5 Q& Y# ~+ G% F+ T  i, d( w]
9 n  E& i& x& b3 @; c5 A" K
" ^5 C' I7 g* K9 a* [! @# [turtles-own[# {( \5 f5 P! w% \) z' u7 a
trade-record-all; v' I; A) N/ Q/ ?
;;a list of lists,
trade-record-one组成8 b4 \9 w) `( Y# G# M+ c! E/ u
trade-record-one( q7 h& V1 R3 e3 C
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
. a6 {  \& b4 U) n& a- |& ?
1 u6 n" _  b- r) h# |;;[
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]]
) f8 }2 Q) n( E6 Q/ B# W1 `; ktrade-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]
# }$ G5 @# S+ zcredibility-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
. L" D/ j" R: G) U% zneighbor-total( O7 C7 y& g+ ?2 \
;;
记录该turtle的邻居节点的数目
$ I/ ~. a& j/ htrade-time3 m" c9 M- h2 y( t
;;
当前发生交易的turtle的交易时间) S& P; I& v- S  l! u/ b
appraise-give$ c4 J1 M( M) O! H6 G( E* c- S1 H  q
;;
当前发生交易时给出的评价
  P; g* i0 {% J; G! f/ }% a. Yappraise-receive* ~) u1 d. K: O5 @% b) K
;;
当前发生交易时收到的评价( I% S# t" q9 j3 a% G% K
appraise-time
" W, X$ v1 ^3 A3 |( J;;
当前发生交易时的评价时间6 I7 R- N4 d. V1 C
local-reputation-now;;此次交易后相对于对方turtle的局部声誉3 q% r8 @( N) B  y" j* q# X, `, x
trade-times-total& V* i3 U6 j; g3 `+ N
;;
与当前turtle的交易总次数( y* b$ N, B5 P  x, y& E
trade-money-total4 j2 Y9 `: Y0 j; K) C5 C& d! T- S) {
;;
与当前turtle的交易总金额2 j1 b( p% m' f  k* a6 B
local-reputation
2 S" ~* f  L  Z7 a9 B0 `global-reputation
% `; b% B. H5 Z) U6 L! }credibility
& D! I: \+ x4 k; O;;
评价可信度,每次交易后都需要更新! ?  U. u0 |+ k) L$ N
credibility-all
& ~4 a1 H% B: Y  [9 P;;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6 g8 R2 u4 S: v% `  t
3 [$ z' u2 {7 Q" d5 e, P
;;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
8 b  P9 e( \1 p  c& Ncredibility-one
" L4 W; V- y8 }* V! H- ]$ D3 B9 l5 j;;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$ E! b$ |5 F8 }$ G; P" H
global-proportion/ }' \; P9 l# ]( D/ p( y
customer
+ q* K$ j$ P0 Gcustomer-no& v5 p# z+ ~: N! P  @
trust-ok
+ G( Z1 x3 Z- w/ D' i% @trade-record-one-len;;trade-record-one的长度
" e3 J' G6 M5 s5 g0 z2 R  m]
+ K4 `; q5 o" L: }7 c
, k* U! q  j8 [* k/ w7 D;;setup procedure
1 _( ?; ]5 \9 Y* Y5 \& H& m! Q  D$ W0 H0 W$ c" W8 t
to setup( O8 E1 f5 I# C$ x
7 n% a6 Q" c  f
ca

4 D+ T' d3 q  _0 P1 l  q
1 R+ d( ?# n3 v7 H) u4 |1 G2 ginitialize-settings
/ D- n2 `, h0 m* j* p9 R
& }, ~9 V5 A0 ~* e
crt people [setup-turtles]
9 ]  s/ g2 P' A8 p3 }6 [
6 I4 s# e! X6 U; D2 x0 c7 D9 U
reset-timer

7 c1 o: U6 p1 A* o1 k; x6 Z* g% A
# E3 P3 B+ k5 E1 [3 L4 g" Kpoll-class
6 [$ _# E3 N+ a) {& U! k

& x$ H, @# B2 \4 O" R5 l4 qsetup-plots

- ?+ f' s7 ^" G4 c" e7 O* |6 J5 A  i- u" E  N
do-plots

, O5 {" f8 r& _) [/ `. R$ K5 Hend, O, s3 [4 ?1 A* O: c; U1 ^+ e

# Y4 r, f* H6 i/ a; ~$ u( qto initialize-settings
! b  N8 T) c5 f2 Q1 g  V
: Q' {9 j$ @( q0 nset global-reputation-list []

1 E2 k' _6 p1 [8 X2 {( k7 A1 V5 O8 x! _6 X" Q. a
set credibility-list n-values people [0.5]

' O0 k+ t) F! X
: V2 r1 P% h5 A" \, a3 M$ h$ M, E, Lset honest-service 0
( }; V$ w( X$ J- [! U3 P
! i+ F2 E  c" g9 S
set unhonest-service 0
7 g8 o4 A; C7 f  D# [& N; D

7 s1 l) S, @( B8 u! lset oscillation 0

/ m# C- Q# q. H; @( e
" V( W+ s- N- O* ^9 i( jset rand-dynamic 0
) X/ K  y( }/ \  E% P& i1 N
end, z) l% Q& f% B3 V

% i8 y; K# ]' g, ^6 P( G9 t6 ato setup-turtles
. J1 y, n8 `# A' d1 ^3 |; `# dset shape "person"
, y, E  E4 _% E/ fsetxy random-xcor random-ycor0 t/ g4 I) t& |
set trade-record-one []
: t* G7 S1 |0 d# u9 a

# z- \. z1 o4 h" X4 Uset trade-record-all n-values people [(list (? + 1) 0 0)]
- N/ }7 d$ j( ^' j
! f4 r& ~3 Z: m8 J3 \) P
set trade-record-current []
7 t: M1 G: _5 @' @5 L$ z8 Wset credibility-receive []9 D+ ?) T) N  e4 q2 D
set local-reputation 0.59 L9 z! b) W- K" [
set neighbor-total 0
$ L/ ^4 e' M$ q0 L4 x3 X1 xset trade-times-total 0( M: P9 l5 V/ N0 @$ ]" i  {) [1 d0 n
set trade-money-total 0- k, T- o# F8 O$ E4 v$ \3 F/ j
set customer nobody
( u; f; B# t+ ]' s8 F! |set credibility-all n-values people [creat-credibility]
: p3 Y: x# a' m0 \+ Qset credibility n-values people [-1]
" S& P6 O! t; ~. H" Y9 Z5 ^get-color4 W! ?: a* L$ Z. j

- q, h: _" d5 vend# f! C) v+ `0 ?% r9 g. S
2 {. y, U* u  F. {
to-report creat-credibility9 T2 {& H, z" }% D
report n-values people [0.5]
2 R7 m2 }% p0 k9 l! @: gend, n; C  _/ l+ w  y' i0 d& [
* u/ H# ?( J) o: w
to setup-plots
7 W, }7 |) u; Y" w& s
$ ~! ]9 h: Y1 l: l7 M# ~! L8 O) qset xmax 30
6 u' l! l6 d, Q

) z9 C# Y" f/ V9 L4 s$ d2 H3 Pset ymax 1.0

2 O5 K1 S2 z# V) S' B% k& m* j: J0 d; k. ~- Y9 Q& N% @
clear-all-plots
, p/ g9 B9 ?8 o+ X5 D. J

  l7 T* H  E. ?, Usetup-plot1

7 C2 \0 ^4 m6 F3 G
% H/ q! ~$ R+ y+ r  u  Y. [setup-plot2

' P% q4 Q8 r6 A1 r. i- b; X
, x4 m- J# z; m& ^9 xsetup-plot3
! {* i. e' t8 V: \
end- n! f: z( s4 b# ?# u& V
0 n) u  {/ i9 U' q, ?# g2 m& x
;;run time procedures
0 T7 s( }9 I; h0 W: _4 X* [
- L  ]# Z  N( X* |. b; p8 R( gto go$ f& S9 S% I6 ~9 i9 B. o

' S5 ~) s: Y- Gask turtles [do-business]

: O. c6 e7 K/ f6 Hend/ c- T8 F$ m# e7 J7 W" h0 F0 ^
( U8 X, N3 k4 p2 q
to do-business
% k" Y7 y4 Q+ Y6 R/ l5 C

3 L# i) _6 g) o, Y& a  ]: p8 G& H0 m( Q
rt random 360

1 l* ]6 C+ R  C  G2 w0 x, D
' i' f% V/ v3 E0 P" |& Qfd 1
0 n$ j  u1 E. b! w2 S

! N) ?9 t( H9 @1 i9 gifelse(other turtles-here != nobody)[

! L% B5 w& E- F. _( N& F  f
- b- P& A! b& U! Zset customer one-of other turtles-here

3 q' ~5 b5 H% g
; H8 B' w, C$ e' R- g1 y" C9 d;; set [customer] of customer myself

* P& D% K1 f0 L5 _; o1 _! r$ h
' C4 e  F" I  Q3 a. Oset [trade-record-one] of self item (([who] of customer) - 1)
1 q3 n1 c* t1 N! j[trade-record-all]of self3 N" l0 T" ^7 Z5 P. r. F1 c4 j
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

+ l' l' x' ^8 @2 j  E+ p' W: w6 X' u" j8 L
set [trade-record-one] of customer item (([who] of self) - 1)
$ N3 Q; P( `2 o! }' t[trade-record-all]of customer
3 J$ f2 C3 ~& o$ h6 Y# T5 `
5 r* ^# g; [: p( M3 ], `
set [trade-record-one-len] of self length [trade-record-one] of self

$ Z; Z( }, V6 }0 q! @# _% T  f4 C% s' G2 }+ X& Z
set trade-record-current( list (timer) (random money-upper-limit))
: e' g$ A5 M2 }; F, b' Q

$ S1 p% Y5 s0 m# e' Sask self [do-trust]& g. u: h/ m( ?2 M) ^# _
;;
先求ij的信任度1 M: f8 P- K  e9 E/ ^9 I

, L0 g/ H' w) |  _7 zif ([trust-ok] of self)
+ F6 p! y) \0 K" Y9 _;;
根据ij的信任度来决定是否与j进行交易[" Q; N. n7 q) _& p
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
; \0 L# Z7 r$ f# c  {  {/ B7 G
1 ]; T# J) R9 \5 V4 [0 b' e[
, b+ t3 z; l8 i. K% ?, m) K
% @" b: M: }* O* C" J, V
do-trade
% |' S' ^- m& ]2 I7 p. {$ y

& m3 O! l; u2 T% D) Z! eupdate-credibility-ijl
- W$ p# X+ n1 R9 a, z4 s' @6 ?- y, V
% a- T1 x1 p- P2 A+ E9 p
update-credibility-list
: J% h3 S; d; _1 {( Q
! ]3 k; ]! t% ~; m! L8 s' V
0 n% ~/ G( \( S5 _2 P
update-global-reputation-list

9 h$ f! Y2 L9 N+ h. I$ t" ]6 `8 I" X* W" \% Y& |# K# `5 l
poll-class
" R- s2 G, j. p
5 v1 [5 _4 K* r7 K$ f0 P  x, x; H# U
get-color

% J3 O& R, w0 J  H/ d& U7 s% G+ u3 I3 N
]]: x5 `8 |- f5 Q" W8 {4 D5 ]
& m% w" A% d4 J- n$ c# ]
;;
如果所得的信任度满足条件,则进行交易' w& v; ~5 {4 |, {% u& v

9 `, B4 S% O8 `! B/ L$ i" w6 j, p[

7 T( x3 i$ p  l( v
; G0 S: |4 k9 F( Grt random 360

  L6 w1 J0 ]8 s( P$ p! X/ W/ D5 r& T; z! K( r
fd 1

1 D1 m9 r. I' _, |3 a( a1 K- l- M  T" f& f; h
]

9 F# I% j; X# g: n+ u' H& [' L. x6 m. R! `! i: ]; |: t
end
$ {$ E, G5 h* }# Q' b0 X  O0 g8 q# O
" \; J" ]+ T6 c) Z% I' H
to do-trust
/ H: D, `! C+ B" M1 dset trust-ok False
4 \! K1 F0 X* O  h, X1 f+ W5 R$ B0 Y5 h( I/ Y
; E3 r3 ~% Y1 |+ N7 n
let max-trade-times 0
# j9 p+ G! }$ `  nforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]$ e; _* H# O: P  e) ^4 X
let max-trade-money 0" ^+ D  o6 E* i9 I6 V8 W6 f
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
* o5 i% g3 [- l! j, g9 rlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))5 `( u! i7 p' `3 C( Z& K8 d: p6 |

' b: }6 f- ]/ j* ^2 q( ?2 |1 N
$ F' ^2 Y2 P8 e" a4 y2 V
get-global-proportion
3 u0 ^4 Q  @; ^. }: E* e8 clet trust-value
+ i& E  l! \. H" elocal-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 E* Z) @. _0 P0 E4 [5 l- M9 x8 E
if(trust-value > trade-trust-value); S/ C0 d) c7 S7 N8 H3 V. Z  p
[set trust-ok true]
- W# Y5 h+ s* hend0 x& A* G. c4 @9 F9 b, H1 w4 Q9 H
% h* A9 P/ ^1 R
to get-global-proportion
- @# H& [2 ?  J. H9 }" B$ S9 _ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
& [8 E) G  f6 S( D[set global-proportion 0]/ Q  q$ z% K3 _( H3 d0 |1 ]
[let i 0
! b* X; H' Z* c, r1 Jlet sum-money 0
, j5 ^/ c+ V7 M" V( Iwhile[ i < people]
" M& W4 J: h# P$ s# @, j[% S7 e* P# \4 X9 \5 o
if( length (item i
% n7 Q; w6 G* Y[trade-record-all] of customer) > 3 )
- y! c+ R+ k5 D
[3 n# {7 v$ L3 V+ l6 f. V4 B
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))+ W, u1 d  q0 z: v
]; \" b$ g' I. b% z/ f" {
]
* M- I% S: }/ X: k2 V# p/ }let j 0; Y8 X, o' o5 F6 M- U- V) V+ k6 h  F
let note 0
  Z' w5 x( p( I7 d5 ~5 Y  [9 U/ lwhile[ j < people]( n+ d+ S% y! R
[' p4 R9 X$ O( Z
if( length (item i8 q7 c8 r; W# D: e7 x
[trade-record-all] of customer) > 3 )
& X; c5 c. q* _& B, H
[
0 S! l5 D' S" T$ b0 O  aifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)$ F8 R+ J" z+ \9 U% P: u
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]( X3 u+ W- H: e' a3 |4 w
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]3 `9 |5 W& X! O
]
! [% U1 t4 G! w, u4 F]
( k& e. O/ Q2 k" Zset global-proportion note
4 W* ~5 l# n# P) w]  p4 ~0 h3 D$ z' @+ e- _0 V1 n) O
end  X; f: _, C6 b( N  h

* Q) I# A' u4 g4 b/ J/ F# ?to do-trade
3 D# A4 {& X! ~3 f& v, y. Z! P;;
这个过程实际上是给双方作出评价的过程% j1 q% T9 z5 |8 s/ h- y9 J: w
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价# M- z6 u( n$ Q, r( [
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
0 y$ }* @2 b$ _0 @+ iset trade-record-current lput(timer) trade-record-current
, w8 E9 k) ^6 J3 A8 c;;
评价时间
5 j* b9 n5 h. b! ~+ `. n) zask myself [
" y, W/ R7 v/ w0 ]update-local-reputation4 m7 [# p) a3 U" |) @; X0 d5 Z
set trade-record-current lput([local-reputation] of myself) trade-record-current
/ ]# G( G, I: d' f0 W+ ^$ a: t7 y- G]7 N; ^9 Y$ {( m9 N% M$ x8 j% G
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
- x: |# K( ]% {;;
将此次交易的记录加入到trade-record-one
( g0 }( j5 K  x2 X$ pset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
6 I. w5 [7 Y7 ~7 }# d. l8 hlet note (item 2 trade-record-current )4 t, S& {9 b' q+ H, r
set trade-record-current. `& V% U+ a9 ?* J6 `# u" C
(replace-item 2 trade-record-current (item 3 trade-record-current))

. F' ^9 n2 h$ Y; x3 L) V) \: y+ I0 {' y1 cset trade-record-current  J! L3 N* H5 a: p
(replace-item 3 trade-record-current note)" s/ s4 g( v) q$ l! T/ u7 @! O
- f& H/ {0 K2 j' l# G. R7 W8 v- K# \# {

# |: m$ `8 @$ t2 Hask customer [
( u1 w1 |( B1 ]0 H7 bupdate-local-reputation
. P1 G6 f% X4 S* h& ~4 F1 g& f! gset trade-record-current
( j; C8 T) [% J/ }8 E(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
) U0 P, y& V2 }# f: [
]
! {# B: `& |0 w" Q3 I+ X
' T( S/ s6 S- H9 H$ R* k1 r6 f9 t
3 i8 H. [4 n! q% l* M
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- U5 l6 U' \' Y! O. p! M
% M: K5 d/ i+ d  `( v
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)): @' A, x8 u/ ^% K0 j. H# g1 h% G
;;
将此次交易的记录加入到customertrade-record-all6 H# `- H$ s6 A1 e' t+ e
end
% j" H! }' h& S2 @* y, m  s: X0 I5 ]/ G3 H6 }2 w. `- R
to update-local-reputation$ Z9 `' m3 S- d3 V2 _6 g
set [trade-record-one-len] of myself length [trade-record-one] of myself& o7 |, K  }" f. \

4 r# d& {! `9 \% V4 y! @- x/ _9 {. y- U% O
;;if [trade-record-one-len] of myself > 3

0 U7 |  y  m: R6 E( hupdate-neighbor-total
1 k& t- \" m- [  U8 z;;
更新邻居节点的数目,在此进行& a( e) W, t* T9 d9 L
let i 3
6 f4 K$ O# b; }0 O, f1 `let sum-time 0) a, `* A# t0 F+ e* {, @" U2 z+ X
while[i < [trade-record-one-len] of myself]# j3 w0 i3 s6 I. v/ S- m% _% {! y
[: g2 g+ [$ K; X; y1 O4 p( m( @
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
) A; c* ~$ W, V# x+ r; g* F- Zset i
% q  D9 K: M, h( i + 1)
3 g  o2 }4 ]2 c/ Q+ e( i
]
9 d4 c5 Y2 Y2 D1 e! Clet j 3$ K' Z# j5 U4 [0 N
let sum-money 0" {. b9 s& m$ p$ x% M  |
while[j < [trade-record-one-len] of myself]
5 g: g$ ?5 B4 ][2 K2 o7 D4 Z( ?+ `9 k5 h. Q
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). g$ Y' }7 Y* S; W3 l+ }
set j
* r$ Z) g6 f7 n9 k1 U4 b9 `( j + 1)
  `1 Z, f: P0 R" p3 t" k5 b
]
* X$ h0 D. @! \$ Z# }, G/ Plet k 3
4 ]0 N* K7 @$ F. Klet power 0( A4 b/ U7 k* w5 i1 V
let local 0$ y( q9 f- b( |
while [k <[trade-record-one-len] of myself]
& ^7 ?2 c; v& v% f( h[
4 a7 l: f. X8 l) b/ L* o- `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) " Z% K* D7 c8 U! b4 H! G* U
set k (k + 1)! X' n& ^1 e: o% }7 X% V, }
], ]8 [6 H; g) y7 ^. U
set [local-reputation] of myself (local)% f4 F" R5 R. @* N1 ^
end9 R% K, g7 g# z. H
8 B1 f; B$ ^+ R; V: d
to update-neighbor-total
- z1 i# V* g3 ?: j/ J3 `' {$ j0 j- w. r) Y; ~7 ?5 H# Q
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
3 Q, @, M9 E$ W3 r! V( v
; F# d( }$ i6 W! a
! E7 Q2 z; }" X, c$ _7 l( i
end5 n, i- v9 D: j/ a) ~# e9 W
9 Y1 n! N0 _" D/ ~3 G+ h: v
to update-credibility-ijl
9 }2 o0 M+ o  `/ O* o, u9 s) N* |1 x) k' f; c6 a6 ~2 J; 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。# S0 O% ~  ]9 ^- d: ^0 a2 t
let l 0. B+ u, c2 O7 T" ?) r) D% a
while[ l < people ]+ f3 b/ k. w$ |; Y" f& T( R
;;
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
/ p2 V1 N+ m: `3 j[
5 \& M) n/ n7 [7 Blet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
5 S0 A# q( `+ M) Uif (trade-record-one-j-l-len > 3)* ^+ u5 C& k* }& {) n
[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$ H! E4 x: o/ j8 s
let i 3
4 n; h+ D1 K3 |$ Slet sum-time 0
3 q, j0 j# Z0 }% Q) _8 L- _. Kwhile[i < trade-record-one-len]7 }* v( m- F' f+ l& q8 p) C
[' b0 B* ~+ o. l$ x- `3 h
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
- z2 o  |) W( J# ^5 o7 x8 h5 t( jset i
1 f2 v, `: {8 M* J) {( i + 1)

2 d2 q% w: Q# u& _+ r8 n# s]# ^  z# A: L' A
let credibility-i-j-l 0+ x5 U! g' Q' ~+ L+ q4 v/ V9 }
;;i
评价(jjl的评价)
; S( `7 d! L  s. l# Hlet j 3
* P, p, |% ?+ E. I- c( Glet k 42 D9 [9 Z& h( c' ~8 r+ v4 n
while[j < trade-record-one-len]
! G- Q/ `* Y) F; Y1 ?/ g4 [[
0 q- B) f+ |, F3 Rwhile [((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 W; D1 I& x8 T) s1 q% @  N+ Cset 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)3 y/ T! y% B# ^. g# @. `7 L- k
set j
+ O5 u* v/ ^! q( j + 1)

: N# G  x# n6 m9 U+ }+ []
. ]7 ?& b4 X* b; H7 @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 )), s4 L( y, T" _, L
" G: V6 P, V7 q5 g. h% J" O

& k/ T+ q# H( U( \let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
3 J# }+ C6 m0 r  ]& O;;
及时更新il的评价质量的评价
" ]3 V1 G* g- A9 L3 f8 Cset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]- c8 C) b. {; E3 x
set l (l + 1)
* y& o) U- b9 [3 B% I- C1 N$ e% k& \]
8 p1 i3 F4 F" B. a! o; D) mend
! q2 v- q% P, A  d
0 F5 _, u! ]# {; D+ @/ ]6 sto update-credibility-list
, d' Y5 ]5 Y2 {$ L. k& {9 R* Clet i 04 R" i9 L7 x6 u; ?6 r" R7 G7 w/ U
while[i < people]
+ c& K/ S& K1 f8 R. R( _+ f' h[
  b( ^: e7 b7 B1 R. s* j  Y6 _let j 0* u) c5 c8 ~" y- `) f" j
let note 0* U, @& l- \. _& `/ J" ^' [+ D; m8 x
let k 0
$ a7 {) B6 q' d' y+ J;;
计作出过评价的邻居节点的数目% K3 A& ?! O1 t, C4 P
while[j < people]
  H) ?5 f' C* Q7 u$ |[% d& {! [  ]5 h; _2 D( X9 J6 r
if (item j( [credibility] of turtle (i + 1)) != -1)
1 X3 q% }0 X; H& R;;
判断是否给本turtle的评价质量做出过评价的节点
7 }" B2 w: W% l[set note (note + item j ([credibility]of turtle (i + 1)))0 l+ j  y; P: J" Q* C
;;*(exp (-(people - 2)))/(people - 2))]
$ w) p' v# `- Y3 R- u, H4 c
set k (k + 1)* D) G2 h0 f3 _2 l5 f% S
]. p+ N: A; N6 ^, J* c$ v
set j (j + 1)
0 N+ u* R0 Y* N]
% F" r+ y) d, K* W' S1 xset note (note *(exp (- (1 / k)))/ k)4 E1 q! m' K: P2 J4 N+ ~
set credibility-list (replace-item i credibility-list note)
  X2 L# R! z3 O# }set i (i + 1)
% L: o" {- j. z3 @]7 ?& x1 W0 I$ H$ s( x2 _& J
end! e/ g3 j+ S$ N9 u/ A7 y

! C5 N' ~) h  Y( L( Lto update-global-reputation-list
! ?/ v3 p. D' O+ S/ D9 slet j 09 y$ P. \. M) t0 V; R2 ]& l
while[j < people]' R( X8 z' L( e. x" Q# Q( U
[3 c# I+ [- K3 h6 Q, g& ^6 s
let new 04 J5 ^7 x5 L5 X
;;
暂存新的一个全局声誉* ?  x6 P% O3 I8 G5 G! b
let i 0
  [( y" u% l/ r& G' G% Clet sum-money 0
; ^, y$ Y6 v6 M9 K9 K1 C4 |& Mlet credibility-money 0- V0 Z7 L2 L4 O2 n+ E
while [i < people]1 h+ i' z# {# i) v! O0 @
[
$ C; H' C. q- t% d& V1 A: Bset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
7 }. {! ^. n3 Aset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
" ?" d* d/ i0 [$ _8 K: Y5 R, a0 Wset i (i + 1)+ E! A& a7 u/ ^7 w. t
]* C6 h( t% u" y# |4 a2 a" V. Q
let k 0& S: x& m4 R$ W; k2 r0 z7 h
let new1 0
. r" w- x1 X/ D9 `% Pwhile [k < people]5 [+ K1 @: f/ C. ]& k6 @
[
$ K0 G; H8 W- Q+ H) @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)
( q4 @* g& A: P9 ?; L2 tset k (k + 1)" o+ B1 n/ R! W
]
" H( J9 Q4 L8 C" L* A$ Zset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
+ Z: ~' H" a# e. _6 h( V, @+ o. ^/ L6 wset global-reputation-list (replace-item j global-reputation-list new)/ V0 m; w3 e7 r# v
set j (j + 1), A! _1 n  `. Y; ^9 W9 e7 H+ C& E
]
! \. L6 k$ l- [: Zend" x0 Z  Q# S8 t# s9 W1 d* K

0 [- e; W" v* o! O7 j' N/ p/ |( k7 w$ `, V3 N9 ?1 {+ |; U' d

9 S- S! r6 ?) T8 l! W: Z7 Uto get-color
" _) K# I7 y, H) F' Q4 B/ p( d5 N% V2 |7 q. u9 ?
set color blue
0 i& B" {/ q1 f6 i% z# N# Q) f
end
" |- P% e9 V8 r6 F
5 H  N  v' ?1 ^+ \- \0 Lto poll-class$ J: b( K: `: J( B4 `- ]
end
* F. D( d( h' I' j' T
. y8 _) Z4 I/ h. y/ Wto setup-plot1( f0 {$ q/ G- j5 K: u6 B

# O% H8 C& Y4 u- B, |set-current-plot "Trends-of-Local-reputation"

  d2 C3 l% D0 C1 w5 F) w: O1 H: |+ C8 k& @3 ]+ k7 o
set-plot-x-range 0 xmax
  t9 |% a3 b" `
+ U4 e: @& S- `# _) V& E4 r
set-plot-y-range 0.0 ymax

& o: r: E2 j! S3 vend8 C; m8 M4 Z  F5 \* T
3 h9 x# S* a; m, \
to setup-plot2
4 e! Y% w1 f6 @* U4 M  i, w# W# o" l- E" f, _8 z8 S
set-current-plot "Trends-of-global-reputation"

8 ^0 K* E! P8 t  s7 q& ~+ h& A
+ O1 R8 V$ R5 `) u0 G) ]/ F& s( [. Iset-plot-x-range 0 xmax
8 R8 T3 ^' n3 g; `* _$ e5 T4 O

* a! u8 S- r- l5 d' qset-plot-y-range 0.0 ymax

( ?7 X( h! ]8 Pend2 J  K8 r3 R' J; n, V

4 L9 Q7 `" Z7 T& d, ~to setup-plot3
& z. a% x2 e% K# P5 G3 ], [# q; [0 d, {
set-current-plot "Trends-of-credibility"

* `) O0 ~& J, ~& `2 Y6 [' r1 {6 N$ @' m3 [, {# J% e5 I5 ?
set-plot-x-range 0 xmax

0 L! {) p. A6 p: W5 ^* M6 ]/ l* s, [4 }( v1 a
set-plot-y-range 0.0 ymax

, z, K) p: `' E" z* Dend
$ ~& z1 |2 w# m4 w- C/ M
2 D) ^2 C% @% ?+ Eto do-plots
* N& s7 ], w9 y4 z9 D. Cset-current-plot "Trends-of-Local-reputation"
1 \  S( U2 b6 y3 f6 Dset-current-plot-pen "Honest service"& Y$ |3 f( A7 y$ Z4 e9 B( m+ J6 r* U( J
end
) x1 _: i# o! [4 b
8 S7 h5 f0 m# u% e7 ~' f$ M5 |8 u; m[ 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.
! d4 P3 @4 W' A6 K: h& p, O
. t( V5 E7 v2 s1 v8 z; W2 }! U$ F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, 2026-6-28 04:40 , Processed in 0.019498 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