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: 16372|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:
9 d: m  D& N) B- ^to do-business 8 o+ p4 y7 @9 L) z
rt random 360# e$ j! r7 v: a1 r$ N
fd 1
* T: e( ]& {4 T: |$ M7 i ifelse(other turtles-here != nobody)[
8 p0 B- ^6 X" c5 Y   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.
8 H( q0 G6 `* S0 E  p' i   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
. F/ l% v4 R: O# y8 q9 F   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer2 C, p, U* N0 l+ Q/ [" ~; s
   set [trade-record-one-len] of self length [trade-record-one] of self
: e3 G9 y" \$ W  G8 R7 I; |8 a/ N   set trade-record-current( list (timer) (random money-upper-limit))& U: X  p, \$ ?6 s/ F$ P, k% s

; C/ x& [* K. S. W  B0 ~( S( x8 O问题的提示如下:
5 ]4 \( J9 P: v* Y  X- m- ?: A, J
9 |7 m( e' R7 Q! B( ?error while turtle 50 running OF in procedure DO-BUSINESS
. T" S5 }" Q+ ~# A$ ~# l  h- @  called by procedure GO8 ]$ `: e6 F0 h. Q
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
4 x6 Q0 E. U1 g; X
(halted running of go)5 b0 Y4 ^  G$ x; r
; a" {) O- p2 N, [: [3 e
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~~+ @3 q" Q5 N/ B- y8 x3 Y
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3 [+ n5 M5 y5 U% l6 Y! b0 z
globals[/ \/ h% N$ z. H+ l. b8 C+ r7 H
xmax/ d* v* M1 o0 @( n
ymax
8 V6 _9 B5 }  jglobal-reputation-list) Z7 V0 S0 D+ O& Z2 R3 z# u
' o  C  F0 x4 w' G  e% L
;;
每一个turtle的全局声誉都存在此LIST
7 k; z1 v, T4 k" xcredibility-list
% h3 s9 ]9 s! F8 O  s' P' Y) O: _;;
每一个turtle的评价可信度
- ?8 i5 f& L2 n  whonest-service
9 h) I' C$ r; L1 K  f6 b' k) H' i! _6 \unhonest-service) V+ P" W; [( X* P+ k9 S6 O* S
oscillation9 Q7 T2 n1 f3 N# ]4 ?0 w2 t
rand-dynamic
4 y" C, e) O) A) B" l& x]
+ U# B$ W) ]* U$ E/ M5 ]0 q$ T  g
turtles-own[
5 U8 n1 q4 V6 E- l, G* d2 l9 W; Ltrade-record-all
+ t& h: n) v5 k;;a list of lists,
trade-record-one组成1 H2 K; F1 X9 L$ C! _. \3 B
trade-record-one
& J) d5 v3 ~; Z2 @0 o5 [;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录5 W! Y% O' f1 O7 Z0 o5 W

# |- J3 d  W8 q' ]9 w3 ?* ~# 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]]
' `0 T4 g" r, m2 Q8 j$ H( j5 U/ X/ _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]! Y1 u/ n) O/ T! P: ^& O% {' `
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: S- |8 V& @! C
neighbor-total
9 \" q& W$ S3 t: n;;
记录该turtle的邻居节点的数目
, F6 p9 c# n; G8 O* x! Qtrade-time' r6 q; T' [4 d9 y" m
;;
当前发生交易的turtle的交易时间
- k; f4 W9 e9 E5 M  j0 s; Aappraise-give
" }* v, E% J5 l1 w  u! t;;
当前发生交易时给出的评价
. ~, a+ q5 @' _appraise-receive
% O. T# e7 o: X9 ?1 I6 ~/ Z* a9 O;;
当前发生交易时收到的评价9 j0 f5 e1 }/ c& c, ^( k
appraise-time* Z+ t4 F) n. X
;;
当前发生交易时的评价时间
1 x4 t9 h) {, c, Rlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
; i3 F; w8 q! Ftrade-times-total0 M0 l' G: `1 b6 |9 j# @4 `
;;
与当前turtle的交易总次数
# r. t3 U) y( L: N& J1 R8 rtrade-money-total
4 R+ d7 E% W5 k% g/ J;;
与当前turtle的交易总金额/ k" ^  a0 E( p7 P. o1 ]: ?
local-reputation  |; G, a4 ?) x$ n: q5 @
global-reputation
9 s% N+ U" H+ Z+ v) _credibility
3 b5 ?7 j7 k  `" G5 u  m;;
评价可信度,每次交易后都需要更新; v5 H  S* L% I* J
credibility-all
4 O: I- ]6 X$ B4 ~1 J) 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
/ n9 C) ^! Q1 r2 H  M6 q$ a
6 [- u. K% B& T  C;;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
; I1 e2 f2 f6 F" r1 f4 x8 b$ y1 ecredibility-one
$ G" c: T8 C% X$ X" P' G6 ]! I;;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
& F- p9 L0 f6 fglobal-proportion
/ [4 S9 o% y! K: Kcustomer
2 t" a' J- k! N) {9 B; Zcustomer-no
4 Q! C, a" X; F8 c- ]8 `trust-ok
5 ]2 `. ?; h) H% `( `; a  Mtrade-record-one-len;;trade-record-one的长度
, S, _5 Q& s; W# e- H% e% M8 H]
# S7 K7 B- G$ K, L
7 z* ~3 s$ q/ O! ^; u: e4 F;;setup procedure: K" J- m5 S: ?# M
7 M- o  k2 Y) v9 b; T9 ?
to setup4 i6 c+ k; a% D6 [

! d' v- ]; S" y, o& O! ~ca

" v, {" m9 r9 A2 R" v9 x9 R5 q
: ?5 n2 A/ j& u5 \  G0 `' o& m* {' Ainitialize-settings
! }0 d2 T# O8 F5 w4 d* }

' M* E. q5 q1 w0 U5 Rcrt people [setup-turtles]
6 X/ T6 N' a# R# y. i( i8 B2 p1 ?. ]4 N

" L* ?, V' c+ T1 W3 R( Ireset-timer

1 i: {; \- {+ N) n! ~& u& w: k
poll-class

4 P$ D6 \" }/ n9 M# `4 n/ D- K& u' _* L& F! Z
setup-plots

- j7 Q) H( e% t$ A; ]! ]+ Z
: D! }, ?" S# N1 A! s* [$ C; C! h; ^3 \do-plots

) E/ J- [+ s+ x3 M$ j( tend
: R7 h/ v0 {  `. t1 U! D% e: v, S& n% b
to initialize-settings% {7 I9 b: z, e  n0 ?

( L$ N3 r! U5 N0 Tset global-reputation-list []

& ]0 r/ [! Z% k$ s! d8 P4 E' ?, }3 c9 R, V
set credibility-list n-values people [0.5]

# G+ y, p# [3 E! ^: A7 t/ }; @. W( @1 U3 a, o+ [2 {- @8 Y
set honest-service 0

# P+ h4 t, z3 I7 z* p
# K' ^7 I$ E% T; Rset unhonest-service 0

' |; [! b8 L0 I: N; Z9 u5 S( \/ n( I+ A6 w4 V6 {  w
set oscillation 0

# ~9 x3 a' b3 U+ V" ~" i+ ^4 d, q0 r
set rand-dynamic 0
! P1 H  v. C3 t/ l
end1 t  \* M: ]) s* }! _. ]
* B! R4 _% S* l% H
to setup-turtles
. D% O3 q. o4 f& R- `set shape "person"
0 k- E, _1 ?- ]! G5 @setxy random-xcor random-ycor
/ q# [3 Y+ c) |- ]set trade-record-one []6 T' _# t% i2 u4 `9 [
2 d9 Y! {) G3 ?4 C3 G5 _  `
set trade-record-all n-values people [(list (? + 1) 0 0)] / [9 ^. ?1 u) z! Y6 V

" W* v0 S+ l# kset trade-record-current []& e+ P' a2 L( Y
set credibility-receive []4 P' Q5 I; m4 O2 S7 i1 ^
set local-reputation 0.5# {* D) _  E; M- q
set neighbor-total 0
& q& @5 \2 }2 h' Aset trade-times-total 0
' t" r* r. a7 S: |9 Kset trade-money-total 0
' g" U& K. v( S4 Qset customer nobody
" y  z" v$ p% V" aset credibility-all n-values people [creat-credibility]+ i- U: F4 X, N/ H& N
set credibility n-values people [-1]
  M+ H4 v4 D4 q$ a, V4 Uget-color
1 l1 Z5 x2 N" z' q1 r& {7 g$ O, K
/ E7 A) B) d  W- c( M" {
end
8 N9 Y  L% h9 U+ i" a5 r( j* |0 ^3 f5 K: D. r
to-report creat-credibility
3 ~& u- c7 p8 b* k9 ~7 D, Preport n-values people [0.5]  V( P) ?5 Q! L+ r8 G
end  f6 H$ F9 v1 b# W6 e

, w* ?* g7 r% M- q  B$ dto setup-plots
/ X& b# J4 M& \8 r0 ]) ~0 H7 h! _. y
set xmax 30
& d( j5 X; {1 ]8 D
7 n( n4 R( G( l1 f0 Y4 ?
set ymax 1.0
* p9 W" v$ ^9 ?0 V: u7 D
+ _! b( T- k) l2 ~: J
clear-all-plots
* N4 c( r# o8 _- s  b+ c1 S0 y: u9 V
6 N. J' Q# a! U, E. O4 L5 _
setup-plot1

* o6 q  N: R/ H9 g9 l1 c
4 y6 E4 c! ~/ h) B. q) Xsetup-plot2

: h3 W' l8 Z$ L+ ^8 u; J) N- \/ j4 A9 x# e; F2 b
setup-plot3

6 t8 Z7 I6 L6 h% Z. bend
$ B( ^0 Z! E+ i' X) j) I: x0 [7 @; X
;;run time procedures
5 s, G8 w: Z+ T  C
" ]% }0 m. [3 c# mto go, u6 ~9 g7 L2 X5 A+ w6 M* J

' P! g9 P) J8 M" l4 [  q6 lask turtles [do-business]
, S9 S. p$ ~) o
end
2 u+ Y2 G' R4 x" `9 }) F6 x; ^3 H1 W0 h, S3 a) e+ g7 `1 {6 M
to do-business
5 x5 ?/ o/ m6 Z8 O2 Z( S

! E9 ]& [9 i3 L
7 N" a; C! X( c6 Z7 ert random 360
8 j' U# t* L  E7 _
, k8 z4 F% t+ {7 A% Z4 D
fd 1
) I% D% D+ T& T8 ]% f; M
- j1 Y/ t& t& |
ifelse(other turtles-here != nobody)[

9 ?% j7 e) O: a2 X7 `4 T0 @1 M
+ ~( e  t8 B! ^4 G. n5 ?: Sset customer one-of other turtles-here

) a2 S, c" Q, B: Y: \% k
5 |- n# M7 S9 r* K! N1 h1 L5 v1 ?& \;; set [customer] of customer myself

1 d- }4 h9 \, h' }* R9 b- R/ g
8 [0 f, Q5 o. k$ C7 X! dset [trade-record-one] of self item (([who] of customer) - 1)
! j2 t+ w. q8 k; y[trade-record-all]of self) }: L/ ]) D: N4 U. v2 X
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

3 L7 A6 Z. u: O1 N, F+ @4 t. G$ a: ~" ~
set [trade-record-one] of customer item (([who] of self) - 1)3 f7 J/ Z% \1 Q5 {+ M8 u/ P# d
[trade-record-all]of customer

8 y" K2 T4 D0 e+ B7 \6 F8 H
( I1 g2 R  ^2 }6 W: o% ~/ B+ xset [trade-record-one-len] of self length [trade-record-one] of self

1 `( {. ?" J2 R( D0 c9 H* E' X# o: g, i5 r0 N$ @& L
set trade-record-current( list (timer) (random money-upper-limit))

9 b8 h+ d  |1 F! |. t) D/ ]9 [0 V
/ i6 M+ I( \9 @# j, }ask self [do-trust]
3 ^$ d6 O/ ?3 k  d: z8 N3 n;;
先求ij的信任度' f( F, j# g- c

  `- \6 E4 J4 T( rif ([trust-ok] of self)
) [3 O- a0 t& I% R) E;;
根据ij的信任度来决定是否与j进行交易[
; Y# h. }7 ^# Qask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
" |2 P  v) K# B# D; r2 l: I$ m
. ]3 u2 ^$ M1 W3 v[

3 D" p, c$ N: A% @: c0 f- F/ b
! N- q; Q- d# E5 Y! d5 Ldo-trade
6 v+ A+ Y7 S7 d/ {

! s, V( @: ?! Q4 yupdate-credibility-ijl
" \/ w/ C" Z% s9 Q& c
$ d+ P7 }" ^" q* P7 v
update-credibility-list
1 P4 o* u2 Q- B5 M/ V
! k- W! Z& J7 H

! U' v6 {" \4 c( K/ @update-global-reputation-list

4 t" n" X$ l- D6 `' W* H/ E5 D
" U; _1 O# s2 W8 C: x( ~8 O$ wpoll-class
2 z9 B0 r9 O" P
' i* i" y( H' Z
get-color
$ D' ^2 P' [& ^) Q

* x. c+ x8 ~7 P) c]]
! C* }/ z! O. t: I" n2 i
1 M$ g5 t  B/ h4 g;;
如果所得的信任度满足条件,则进行交易
# `9 C. |, J, w3 T  k0 l. t( u
1 E& l% E' _1 }[

( M' [1 s) u5 R+ L+ Z& \& }  d& Z' J; m6 A" P
rt random 360

1 K- d  g5 U2 q% d( O! y' z$ w9 `) a6 E1 T0 i3 J! z) c9 a0 O
fd 1
# Y/ P/ k4 N8 }7 b: D

# o& r& E6 W& ?9 b8 U/ y' i]

# q( @1 C+ }  ?0 m: c! K" X! X$ B4 i
end

- x0 _- {2 u! E/ |8 F: {, _: Q+ x% H! Z) r. ?# p" Z3 m( ?
to do-trust 5 j* U% J* F* T1 n. H; N: s
set trust-ok False
; y& a8 Z9 M( C9 a6 X' D$ ]
* \/ ~: R2 b8 s# l

/ b; K& j% o: j4 D9 S( W; T; Ylet max-trade-times 0
( F9 D$ z6 o6 ?' K7 |foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
/ v/ v: @' A7 F7 q" flet max-trade-money 09 ^* d# i8 M8 W5 X) |
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]2 s6 v: D! R- T. l( j3 s
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))) D7 G. R' U3 T8 L7 N
# L2 c, S4 s7 I' `
* C; ~: Z; |7 Z# ]' v% D
get-global-proportion5 F( [3 O: l" W, H/ |7 |. B
let trust-value7 Q" y. [9 T9 A, v4 X6 e' N" b
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)

! d8 Y4 j6 F, Y. n$ qif(trust-value > trade-trust-value)
3 t5 B7 X9 g& l7 q$ s7 d& i% L% C( S[set trust-ok true]$ Y# F, T0 E, r/ e6 y
end. z& s1 W8 C  q+ m
8 M5 }3 g" _' y5 F& E
to get-global-proportion
# F$ x" N$ z+ b% n  L# I; iifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
& F1 O/ c3 V4 Q[set global-proportion 0]& u$ ?' E! R0 N2 w
[let i 0* V- q* b" }/ M. @: X
let sum-money 03 \. K0 X  b" x1 }- e& U0 y
while[ i < people]
6 \2 B6 V4 {/ k- g[: k( d  Z- e" ]! h
if( length (item i
! h" h3 }9 @- ?- C[trade-record-all] of customer) > 3 )
1 S3 \. `7 r/ G0 N; v& s
[4 l/ h- ]9 a( V* y
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))  O  v" @, S1 x8 F
]; ~9 n% U$ f' J; f. |3 h$ L( p
]; h% a4 C- Y0 J
let j 07 n+ m1 {2 [  |4 q
let note 0" G0 R% D$ A1 T8 l# }- x
while[ j < people]
, c  j2 D2 Z6 l% s0 `  ?[( v) \. ^2 o$ S) a
if( length (item i
' U- g9 M7 L+ w' h# X4 x% q  V[trade-record-all] of customer) > 3 )
  s3 Z5 F1 g3 l' A
[! t: W2 t5 N6 L, n+ R7 v- e
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
9 t+ t+ V) [3 _& u0 |; a& v" [[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]3 x! t. d0 b( i% s! g: C% J
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
& V2 j( D6 Z0 E3 K+ ?]' y* Z/ }! P6 s# G
]/ G+ N' {! E6 Y: l
set global-proportion note
, |/ r% w0 I1 D* P, s# W& s]9 p; a( P9 T1 {9 v
end
' J9 e$ m  b! ^( h* O' x; q8 @
7 Q8 l7 l( }" |3 h6 [& N8 Y; B9 Sto do-trade) H  ~$ R# ^- {! F
;;
这个过程实际上是给双方作出评价的过程
: ]- o$ v. l, ~9 m1 n: M$ @" Nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价, }+ o5 z6 i5 ^: C
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价, v& e; I# l6 \! d( U' {
set trade-record-current lput(timer) trade-record-current7 ?* d( d% e) K' m. M9 m
;;
评价时间
5 g( J: {2 D* V* rask myself [: C/ _! `$ q: x; Z! Y
update-local-reputation5 y; h3 k* b. [
set trade-record-current lput([local-reputation] of myself) trade-record-current' p0 d/ V, r1 P; R6 H
]
" d7 I. X2 n# |  \& Z0 iset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself( @: ~% ]" `* v
;;
将此次交易的记录加入到trade-record-one+ m' S4 O$ L" F4 Y; |8 x
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)3 Y1 Q/ b6 T0 Y5 M9 W5 r3 l
let note (item 2 trade-record-current )7 Z# R; ^/ @+ |8 {6 ^
set trade-record-current: d0 t4 o% C; Z$ Q
(replace-item 2 trade-record-current (item 3 trade-record-current))
5 M2 j9 ~$ }) ^0 K9 O
set trade-record-current# \7 `! I) n. i' w6 ?4 j& d' J1 |
(replace-item 3 trade-record-current note)/ k- h$ h, R/ o# w! H3 P" M1 q
+ H% c. Z% I  p% B) a% l
' A1 Z" _" u$ c; y% ^  l$ P& S1 O
ask customer [, `! Z4 `: G  F/ Y0 N
update-local-reputation/ g- }. R' h9 r& o) g/ q
set trade-record-current' L5 U6 j" i( v) T5 t6 S. [
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
2 @( `  z# ~) ~$ S+ F6 c. X2 H
]
  \7 D+ j$ N: K+ J$ W" \& k% E: C, F$ ?: r: N1 O. b5 F$ y
9 G+ j' G/ u1 w- u/ o
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer7 @* @1 u, g5 u

8 C  X* o0 ~( n, j$ oset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
- `' W5 N: [4 n  d5 J& c;;
将此次交易的记录加入到customertrade-record-all2 y! p2 f. T& L: x( [
end
* i5 p9 e# k1 {: q+ D4 y6 }. \
9 O2 N- V$ F* v# I+ Cto update-local-reputation7 k* z" W: h. Y' f
set [trade-record-one-len] of myself length [trade-record-one] of myself6 `! J; a# C- v* M1 F+ r7 V' _0 ^

. M$ t) T3 q! i, S2 s2 n2 m0 \" Q7 G8 `7 i. o- {  U2 b9 V
;;if [trade-record-one-len] of myself > 3
* c/ A# S! F, t; }& Z
update-neighbor-total
9 C# n( C' m& Z  _, d;;
更新邻居节点的数目,在此进行' i9 k+ t7 R$ }1 t. R' V* K$ p4 @
let i 3
2 f' D0 }, n! z: ^6 @9 k( v; llet sum-time 0
) e3 }$ M# k0 ]2 B6 cwhile[i < [trade-record-one-len] of myself]! C7 L7 D: y/ w1 ]+ V" L9 h
[) c% h, g8 c& A$ l7 I# ]  T, n8 f
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )$ {8 t1 g' Z! t* N# b/ a
set i# ]3 t# Q! I# ~
( i + 1)

, i1 A6 \; w# B]
5 `2 n9 S; [* K" r, Q9 ]. s% flet j 3% G$ |; O- a& W4 l) V
let sum-money 0. n/ k# y, \0 t
while[j < [trade-record-one-len] of myself]
) C& _6 p- r  x3 S[5 s! a& F  f7 y2 N9 c! K- O
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)
' ^- k$ y6 I$ q  R) |9 a3 @set j7 g* `9 Y% t2 @1 `
( j + 1)
+ N. D0 _6 N+ N) v: \
]; m/ a' A6 N, E& @- ]6 U; i+ P
let k 3
8 z; W6 {. y3 C6 l7 ~* L, Llet power 0  i$ k9 N! J- F" a
let local 03 R" _& R3 f+ a: N" E
while [k <[trade-record-one-len] of myself]$ ?1 y- S( ~% j
[& _- e2 H6 h! U" ?% S
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)
. F5 \3 p6 ?. b9 Nset k (k + 1), R) K' Z" |  m( Y0 }" C
]% v/ Q) a+ ?6 j1 ^! d: j; J6 U
set [local-reputation] of myself (local)
3 W! h, P$ h- V0 M+ H! tend
6 `, V' e# \( t( ~  v4 u7 @! S. D4 e7 L: A1 l" Z
to update-neighbor-total
3 \" U5 a0 x6 q9 X7 ?7 x: F% M9 e8 T1 u" I1 W# y
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
8 p  b  v4 d& L9 i5 b* ?" g& B) z+ T% q, c9 |  m$ J
$ J% y8 e# ?/ ]" c3 T9 n. x
end1 e1 C  e' t5 `  P! |+ F! n6 F5 R+ @
' g) ^, E) N' T8 p5 g  ]
to update-credibility-ijl * T' f  `2 Z$ c# S& M
  O4 h  |. O' {; f  R  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。
% ]  q8 M$ u6 }let l 0- s3 g: Z# K1 E$ o) |! e: A
while[ l < people ]- R# s  G8 L3 v
;;
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& M5 a' I" P& \0 U. i& x
[
( i1 z0 c9 J% V9 Q& V8 |2 L! l. [let trade-record-one-j-l-len length item l ([trade-record-all] of customer)' `  {( E* B/ {2 x3 {
if (trade-record-one-j-l-len > 3)
  ?5 [- \5 Z3 o" R5 q[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
0 @6 K, f) Z6 w! f. }/ r& Ulet i 32 S: k3 c# J* U
let sum-time 0
2 m$ M. O5 p2 }$ g( z2 xwhile[i < trade-record-one-len]
; l( Z  i) i2 x1 U/ f3 X7 D[7 x& r6 c8 e8 x5 ?0 I2 b( M
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
. L$ D; g% Y: s% b4 Tset i& W9 j$ i) \% e$ A1 l
( i + 1)
* g+ k7 d5 O' l, g4 c
]
& d2 r4 ^+ |4 Z9 W! tlet credibility-i-j-l 0
& d- U5 q! e- f) U5 h1 v+ n% };;i
评价(jjl的评价)  |  c7 W( U0 l3 D4 u  h& V* a
let j 32 L+ C" W( E! r, k
let k 4  O2 T9 ]9 A. `$ o
while[j < trade-record-one-len]2 Y3 n2 q! P$ a& Y: V2 R
[
  k) t( Z0 P+ K  N2 k- Xwhile [((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
3 Y# J( t% Q( K6 \8 O- e. ]0 T; Sset 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 ]: G6 ~/ t; T% B, z
set j
& b* n6 u% z! g) c$ Y2 J2 Q' Z( j + 1)

7 f7 l  F9 D  H. r! Y]
6 v$ R6 p1 h5 \0 e' m- A& }6 W! Aset [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 ))
' v/ w+ f7 Y9 ^% r4 A1 B) K7 t( A* n0 `3 d, O& {+ X
& p4 F7 L4 a, o- F4 x9 q. ^' }
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
4 p4 E" ^& N1 B) m1 m" I$ e;;
及时更新il的评价质量的评价
0 j5 j0 u- X- Pset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
: M/ f9 t. {2 a( qset l (l + 1)
, Q6 f' f6 K" c7 W: i! i4 l]
" U% O7 H3 x  w6 b/ @( Q, dend) C% C- k( t" [7 x

$ a; K- Q, c) lto update-credibility-list
/ t+ u0 _* x) U, r5 olet i 0
  I5 ?4 K- |$ Y: Jwhile[i < people]
: H% I1 V8 V# v1 v/ w[: Y9 ~% Q4 ~( q
let j 0: p! X- L; E+ _( r. I
let note 0: S  k) ^( O( R, C+ e4 a
let k 0
) B' F0 O" R+ ~6 G4 N0 x;;
计作出过评价的邻居节点的数目
4 ^: c7 r/ q' E0 B5 o6 T0 Bwhile[j < people]& k" R2 X* a) a$ [. a/ G( W
[9 c2 R  E4 X8 G1 W9 B
if (item j( [credibility] of turtle (i + 1)) != -1)% c2 j0 F" \; l! o( z' X
;;
判断是否给本turtle的评价质量做出过评价的节点
  C9 x6 X' _+ t/ `; n3 U[set note (note + item j ([credibility]of turtle (i + 1)))5 O0 X* g  l3 w* l/ v6 o1 c/ |
;;*(exp (-(people - 2)))/(people - 2))]

- ^2 s% |3 i) e: Y1 X. l6 Mset k (k + 1)
. R: J/ f* |3 w2 s, k2 m. o]
' F* t1 ^& w- `  V3 n& mset j (j + 1)
2 q7 `7 [6 j: z3 A7 I& |: M]
. g9 Y1 `5 s0 p0 J/ Lset note (note *(exp (- (1 / k)))/ k)( K! _  l; a4 \$ E+ v" q* M
set credibility-list (replace-item i credibility-list note)2 w7 q  u! b+ e. D( M/ U! [& H# n: _( ^
set i (i + 1)4 x# E4 Z, Y$ |. T
]( F* ^( Q- K3 m8 M6 n
end  D+ j8 g9 r3 ^# V

, V* e! @, l7 q3 |% ]to update-global-reputation-list' k" t6 B& ^7 _( F- ]
let j 03 }3 O, u& }* z' s9 u" }9 E. s
while[j < people]% A- Y% X4 }2 F
[4 o* e& {9 ~/ [: g  R( P) C
let new 0
* h  ?; u& g$ _. Z: ^+ r* R! J;;
暂存新的一个全局声誉+ F2 ]- w& @  J# m
let i 0! P0 [2 i+ ]0 ~- v8 F' N
let sum-money 0
% Z0 H! m, r$ U$ s; F) Y, t7 @let credibility-money 0
3 i. s, r- }0 Twhile [i < people]
2 m* e! ^( ]3 i  E" U, }( r, F* X' f8 Q[
+ h) u  q8 o3 @: x3 ]/ B6 l# X2 kset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
0 `# h2 N3 r. X, U9 ~( Zset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
0 n2 W, _! h4 f. Uset i (i + 1)
+ i; v% a6 L) ^- p]6 ]/ n3 x2 Z) q  U4 q4 h7 x  j
let k 0
# M- T6 s! z4 _; hlet new1 00 @; P% a' P8 Z! p/ r- Q
while [k < people]
  `6 i" X$ s8 E8 |5 C  x1 p[6 Z4 D$ c4 W! n& k5 v" ]7 \
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)
, F+ d. b! y- o& H) h8 }* g" ]3 j$ tset k (k + 1). M, ~. P& D; i9 U
]; b$ h8 J; O5 o# A0 o
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
+ K6 N4 C0 `  j3 Aset global-reputation-list (replace-item j global-reputation-list new)
# U) R$ |  p- E& g9 ^+ p: {set j (j + 1)9 \+ Z4 `* A6 J6 b- [$ C
]
- Z6 a% M, a' R9 c" J8 lend
, T; L! v5 w5 ~* i$ ~) _5 u7 ~; \
! N# |2 Z6 u* |' U7 r/ c( S6 x$ I/ p

& L) G' v# N" yto get-color
$ g$ O( V' }/ E  @6 Q9 t1 n& e) ^$ x" E0 E" m* D$ S/ L1 C
set color blue

0 A4 U% ?6 L6 t# z! }7 aend
1 }$ Q& |; z. J( w, {" m0 |% ~6 u% T5 P9 j9 j4 c
to poll-class
; P6 q; w9 B1 |( W$ Nend: `% S# C) {; G

! X# v; D. l3 N6 y* _to setup-plot14 Q- D# R, G' b+ s, p$ p
% R  }$ h7 Y1 K
set-current-plot "Trends-of-Local-reputation"
9 f* {. N0 Z: g9 y6 m5 I1 L

! i) |) w+ _  Pset-plot-x-range 0 xmax

/ y* Y( d& ^- L( ~4 M+ O4 w: Q: L/ Z
: J3 w# N8 D4 s* ]  G: B0 \set-plot-y-range 0.0 ymax
2 ~$ i1 F- W+ I0 P. p8 \: D
end
) d3 m1 ]9 A  f3 P; Q& u
5 {8 v4 |  ]* A3 a  b: O1 M& Yto setup-plot27 D1 J7 o! c9 t/ b$ j) P: Q
! A; }4 A: |. z4 \, T( V
set-current-plot "Trends-of-global-reputation"
/ `3 L' k8 j# ]7 n1 T

; Q) v2 r# }' Z" S0 B0 iset-plot-x-range 0 xmax

4 Q. ], J1 t$ _
7 `% y* `% K- Lset-plot-y-range 0.0 ymax

5 O( i9 A- _0 V# E- a) n" xend5 M  r1 F5 V  Q1 E! ]6 o
: i, H  N* V* z* o
to setup-plot3- a: z; d' A, ^; i9 L0 j- S8 \- F
* P1 D$ q% Y* U! C) a
set-current-plot "Trends-of-credibility"
( \2 R. z# V1 k' _! D

: E/ }: c% x, C, c0 q2 \set-plot-x-range 0 xmax
" M; z: h; r0 i9 G2 w

# `$ C, ]3 J5 G9 k( e: @# eset-plot-y-range 0.0 ymax
! i7 O' v& W9 F. F
end
3 @: I+ l. Q% b' {: w- z
, `! U, [: h9 A7 lto do-plots
. j3 o( w1 F8 y1 Z; g+ a1 t, Zset-current-plot "Trends-of-Local-reputation"8 F; V3 Q5 v) L- C- c& y
set-current-plot-pen "Honest service"
# v$ C1 N8 j4 A2 `end
+ p0 J( Y% V# z( [6 O9 ^+ M6 [" Z# a& k' L$ O7 Z* J% t  h
[ 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." N! T/ M) |! Q+ p7 N2 z

! c1 p/ E; v7 B. H  U, m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, 2026-7-13 08:32 , Processed in 0.023127 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