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: 15822|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:4 E$ r, V* `" |
to do-business & m7 d' O, S; Q8 a) i1 D
rt random 360( x( U/ y+ C- J2 U1 j( b
fd 1
# i4 b/ P* ~/ \- ~ ifelse(other turtles-here != nobody)[# I* _; W$ K! h  V5 f
   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.* `  m/ T# d& F, y0 o$ i
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
6 z8 h0 v8 W; _3 c" Z7 t+ W   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer" \2 H. p0 I" S
   set [trade-record-one-len] of self length [trade-record-one] of self4 M! n: `  g3 e8 c
   set trade-record-current( list (timer) (random money-upper-limit))5 e9 V* j. }9 P2 C: V: o& V# u
( R, `; E( p# Q* Q/ }0 C
问题的提示如下:$ h4 O( u6 N& w$ w/ z

& y+ ~( a  `; c( L& M8 Verror while turtle 50 running OF in procedure DO-BUSINESS* S$ J& e* X2 [& z
  called by procedure GO  {" m6 N5 m3 a; O
OF expected input to be a turtle agentset or turtle but got NOBODY instead.* \) k% s$ F# j  u4 M- [
(halted running of go)
3 j9 c7 q/ E' I1 a4 r- N2 T  a; d. @! R% z4 x# i* c3 I2 i9 {3 M1 I$ [
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~~" ]% P) `& ?& }
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

本帖子中包含更多资源

您需要 登录 才可以下载或查看,没有帐号?注册

x

评分

参与人数 1仿真币 +30 +2 收起 理由
booblu + 30 + 2

查看全部评分

发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教9 R+ r$ P8 j+ `8 [9 u
globals[$ @5 ?  l- b. U4 x: }
xmax9 k! f6 c" R4 n. ]5 h  h! ?
ymax
. A: ?( I. `8 o8 ^9 i' o1 I& ^global-reputation-list! C+ i9 C/ Y: a

1 i) {" l3 p( W8 `8 e" k;;
每一个turtle的全局声誉都存在此LIST9 k6 I% ]7 f5 d' T% v0 T
credibility-list
6 a& b9 b( h3 C" K8 w;;
每一个turtle的评价可信度0 j$ X. I- Y  ^3 N3 B
honest-service. p! d9 X5 m, N( K: U7 o
unhonest-service
6 ~/ r( g% A6 u. ]oscillation; e1 l* B: ~7 p6 o) R+ k
rand-dynamic) O- r1 c/ c- d
]2 Z% Z( k  Y/ H8 r' A* T  D' u
0 L# z! z+ J3 E9 C
turtles-own[" z2 D3 S; j0 E6 N- S8 A* `7 n
trade-record-all
* {" \: A. K7 F, K6 R) n;;a list of lists,
trade-record-one组成
2 o4 D, A7 c: Q! L# b0 n, J2 ]trade-record-one
- q/ n* f9 R5 u! W- ^; I6 p' s. |;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录; y4 S8 M& d5 S0 M

9 i1 A6 \& ~/ M: z7 v;;[
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]]- ~, e& a/ K& v- G; p
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]
% W6 }8 g" v; a8 M, s* icredibility-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) _  P9 i0 U& \
neighbor-total
# q* [: F) O6 |/ Q! @+ ];;
记录该turtle的邻居节点的数目
* e" P' w- X$ D! g* K$ Mtrade-time; s3 R3 r: Y) c" b$ j  d8 i' r
;;
当前发生交易的turtle的交易时间
0 l2 w0 t, J. D0 k2 X7 R5 bappraise-give5 j6 j5 @# R5 E! T- }
;;
当前发生交易时给出的评价
' ?, I! i8 ]+ |  N  Yappraise-receive
6 n+ T  D. w5 x! _;;
当前发生交易时收到的评价( F5 s3 {8 m( X8 l# i+ w( f' N
appraise-time9 o- B: w1 I; U( q6 |& o. ]
;;
当前发生交易时的评价时间9 a7 V4 T2 p' L. B& r
local-reputation-now;;此次交易后相对于对方turtle的局部声誉; M, d  i, `4 o! _
trade-times-total9 S5 h9 W( `6 e
;;
与当前turtle的交易总次数4 F, ^+ N# u) K0 M2 M, C. m# ^
trade-money-total
1 b+ d! [( l& l- D( j# s0 @7 W;;
与当前turtle的交易总金额1 t# ~/ P( E% m5 ~* n
local-reputation1 y. o$ R# N$ R# J* r6 X
global-reputation  W  h+ m2 \  Q, T2 z" w
credibility! |9 e7 M1 N; b$ H" l( k( d
;;
评价可信度,每次交易后都需要更新# O7 S) C6 K0 H5 @, p9 ]
credibility-all
5 N& ?" }# Y3 L+ h- y: 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1 c8 y4 [; P0 U8 h2 A

/ n- ?# \( v3 r;;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
9 D- U0 A. l; _; |- _, Scredibility-one
( h$ G) o7 N7 e: ?;;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
$ U8 ~! A0 N; K% p0 n" I6 Bglobal-proportion' U8 W5 d, R9 \* ]' T/ K  ^
customer
' |$ M4 d1 N( ?7 W; j' S9 gcustomer-no
" {. g" X0 ]  ?  Ztrust-ok2 ^  I5 G' a2 V* m$ u
trade-record-one-len;;trade-record-one的长度/ ?+ ^9 O4 x1 X# ^* f+ T
]7 h/ p0 n3 W- |. P, [
) y. z3 A* [: B: z9 {
;;setup procedure
9 j# _% r; l/ \1 _; U4 N( \
: s+ |# W- o: D; F  W, nto setup  D- E9 s: y+ t+ W' Q9 I1 l
/ S2 X& j) ^" C2 w; x( ?+ j+ H
ca
8 {" F# z" s( n: s

4 b" |$ `7 v& H5 w: ?initialize-settings
) G) k- B: i" Q0 u! M
. |4 z. i: ]9 E& X# D+ J
crt people [setup-turtles]
0 l6 B: f5 c( A' C0 Q6 I/ \' W5 h
* o% b8 a8 D2 [. k& h
reset-timer
% F, s2 ?& ]$ [' X6 i+ \

  Q, O* p: B3 q$ ]0 A6 Kpoll-class

# B% k# Z& w2 ~' A5 W
, A+ r& U5 D0 b. n0 j4 `setup-plots

6 F. h. _* i4 ~9 O; b
+ Z3 m3 ?0 G! B( xdo-plots
2 o& Z8 P7 O1 w2 H( ~
end
% K4 v# E  a/ i* R. B1 |& s. \
, _3 d9 t  S. O( c; q5 V" d. e- nto initialize-settings
0 s' O, V- \! g) b: ]3 l+ I& T9 |0 k7 r8 M
set global-reputation-list []

9 t3 A* d$ i/ g8 Q( V& ~, f5 e1 t" E" d  B* P( R% U" z) C
set credibility-list n-values people [0.5]
& F8 F. K* U% {0 J
6 v+ v- n0 B! g  T+ f
set honest-service 0
6 X. w* N8 p7 `5 z9 L' q

$ A/ e6 A/ U7 i, T4 H, [set unhonest-service 0

6 U8 t0 G+ X* ^- H6 o8 \6 [( L8 b3 y" K3 c3 [' y) P; b$ t0 _8 }7 ^, _
set oscillation 0
' {0 ?4 u: y' `! Y6 J0 f( }
) `6 H( {1 n% f: B
set rand-dynamic 0

- g1 h& c$ e2 v2 i4 f. Gend
% h5 m% E* H( P) O( M; I2 c" |# @$ s$ w* y; s3 Y: M$ m9 s
to setup-turtles
! n- M% i/ o) Q2 e( e/ k6 j4 jset shape "person"/ _" G9 {  `8 H1 |" x. U4 v
setxy random-xcor random-ycor0 p3 ?( n2 c  f5 n# F
set trade-record-one []& P, x# @) ]. V+ i! v- L
! U3 X7 d2 u% \1 i$ h- Z4 ]
set trade-record-all n-values people [(list (? + 1) 0 0)] & y& l. R: ~, U+ Z0 ?/ A4 {& Q

8 E4 g* Z. M. R, O4 Hset trade-record-current []8 m$ e/ R" X! X' D3 k
set credibility-receive []3 x+ G  W! d& k( U, ]
set local-reputation 0.5
5 l2 `( I4 i8 y8 Hset neighbor-total 0
% Q# k5 m' P1 i1 x, R# rset trade-times-total 0' n$ L, n, I! ?2 ^5 q# e, p
set trade-money-total 0- t( Y! m; j# L2 }1 G
set customer nobody3 o( P  p# B+ x: X$ c
set credibility-all n-values people [creat-credibility]- y) Y! C; ^$ j. t- X  U+ b
set credibility n-values people [-1]
! r5 [2 [+ F$ W) A. D% [4 Q. J8 Z( }2 K) yget-color
' W, |! E/ ^4 J3 M4 R
- Q! B0 U, F; G) ]9 K0 E
end
6 a- b4 h8 ?2 u/ ~9 e, M. X  N5 s% \2 |: U4 _8 ?, Z# Z
to-report creat-credibility2 f6 j# L: k* O. v. E
report n-values people [0.5]" J& q' G- j4 x8 F" A1 x
end' A, Z8 Z" Y& O: f0 K) `

2 m1 i9 \. I* Q/ J3 @( k0 |to setup-plots
* X/ E( e9 E. c+ \& s
5 _3 K# J* c' u# P+ R% K; _set xmax 30
1 r+ [+ }6 c% x% R5 d% r
4 l1 \& {% c6 o, Q6 _7 p
set ymax 1.0
+ i4 M$ q. B2 Q8 ?3 b  f! d# c
; \3 P* V& B8 V* e
clear-all-plots

2 G& O- A: k! p1 Y2 `* r: S; p
3 I! X8 m( h* R% W, Ysetup-plot1

/ x1 }! P) u" K9 d" l8 ]+ \
" R& y5 M7 ?! _; G- Y: ysetup-plot2

, U. v& {  |6 i- v, z7 s
+ c/ S* I+ g; I8 b/ u% e4 Msetup-plot3
  g. D& Z; M/ w/ O# e
end: J; p- e5 q6 o, H5 m

8 o2 p  D+ i7 `# [/ W7 c' U4 d;;run time procedures
+ K% W" C# I5 R2 R& |; ~7 }- n
. g$ d1 R+ `+ Rto go1 v( `6 Z9 |( z! Q& T. }
% J' T: E  ?9 l! r" s
ask turtles [do-business]
  L3 [1 c2 G4 v, L! X) o9 q5 N
end4 d$ l7 ?! \# E! r' U

" Y& B8 {7 K6 K$ M) Oto do-business
" H. }8 ^5 P  }( L( S' H9 M9 Z
. q3 d1 Z- I' S% p0 ]5 T

7 ~" ?/ j( z3 o% qrt random 360
, J) {2 F4 q# H& P* I+ x
5 `! W& z0 W5 r8 d* R- m
fd 1

4 H# G4 @. T4 h" J3 y( {
3 u# S1 F5 @1 _; G5 E+ O  Difelse(other turtles-here != nobody)[

: v' I/ F1 q) }+ {+ F5 w
/ x% Z1 I! h7 b7 l6 iset customer one-of other turtles-here
( }7 j( f: g5 p: ?7 A# \  l( U' @3 b

9 ]- G' R3 a% S- o; Q;; set [customer] of customer myself

/ `3 `4 ]) Z& Q1 F% E4 |& O2 b# L; G2 h  z* c' ]
set [trade-record-one] of self item (([who] of customer) - 1)
8 q3 I0 `9 N% W8 p# P" o7 D[trade-record-all]of self
9 D1 \3 }) R9 Z. z* D. C;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

4 L/ h+ w0 ?1 P9 g' ^5 `% ^
* l# t. x* C) r+ a7 }8 nset [trade-record-one] of customer item (([who] of self) - 1)5 P# ]) k4 d* |( B0 n$ M+ ^  }
[trade-record-all]of customer
3 i6 R9 O6 l7 Q, _5 B  |
- P8 h: x! ^1 c1 M, }1 P/ |. Q
set [trade-record-one-len] of self length [trade-record-one] of self

; P0 R; a& ~9 _
1 y1 u) m; Q4 v4 F9 Eset trade-record-current( list (timer) (random money-upper-limit))

* E( |* O5 O( p4 i8 X0 b
/ y" e& D6 G* C! T( a0 {( nask self [do-trust]5 t) c& t, r( l" P+ }; M
;;
先求ij的信任度
0 r3 n; |+ b1 F$ C
8 z/ [6 j' p, r& t' @  s. o7 Qif ([trust-ok] of self)/ G* q( O# S! g7 p, h' Z0 k1 H4 |
;;
根据ij的信任度来决定是否与j进行交易[
; r0 @* a4 N* C# Q8 qask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
1 s5 K" ~* U, j$ V' Q+ d( g: m% }  O3 N. y! {, f- A
[

3 _2 M5 y) g3 H6 x8 Y2 D; U  {3 I2 ~: |# a
do-trade
/ x* o$ y% _' {$ ~' @

; Z3 ~7 O- [9 R6 Y3 ^update-credibility-ijl

# F& T$ z3 y0 k8 l( g$ k1 g5 f* s1 ~6 I- B% @" a7 L
update-credibility-list
) J7 L3 B+ i8 I

# m$ o# m1 `/ f3 O. l2 M9 v, ^! f+ w/ U3 C- f
update-global-reputation-list

8 H3 k2 h, p1 z2 Y/ |% M4 c  v' I0 U1 y4 P% E0 r6 \" z
poll-class

7 }3 [4 j; Z9 d# ?% H' u1 m/ ~1 x1 {# f, r% @) P% u
get-color
" m- E9 j6 i( _$ K) d
8 u/ c: z; ]( [4 q- i6 m7 v
]]2 j, t" W3 D. ]2 V2 p' H, U3 Y( n

# K4 p4 D0 R! ?0 h4 |4 F- }3 Q;;
如果所得的信任度满足条件,则进行交易
: d9 j  t& a$ ~2 v, r: G1 @/ L; t0 ~
9 f) c0 O! R, k8 i* j[

1 E4 u" z( Q1 l3 N2 c9 F# o. m' e3 j( w# D# V
rt random 360
0 t$ ~5 D8 p; k. {5 h8 ^% P

: ~+ Z9 g( ]/ l& t$ a0 tfd 1
5 g4 N: Q: k- i4 x" @5 [# M# I
4 p5 ]0 T: t  e7 Y4 Y! }
]
) I8 ?; M, |' E3 H& s/ f
7 Y0 q% S- t- g1 @& ?* r
end
  `6 S: f3 B% {) H
; l" r: O' S% q0 ]; _# Q6 @+ W
to do-trust
- r# u5 Q2 [+ j; ?set trust-ok False
* q# v) t6 J. H
) T) [+ m  R) x. _# Z& }5 E
. T2 q& V/ f% {$ m; Q  ]4 P1 U9 k
let max-trade-times 0* I1 q4 z; C3 w% }. \$ R
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
5 y- C* N, W! b$ R, L3 Olet max-trade-money 0
* c2 H0 C0 U) ^1 b+ V( ~7 O# p  P4 Qforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
) @  w: s$ ]9 L. |let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
* B$ C: K3 [/ o5 y
  c  ]# l; Y- M  T) e6 h

1 i8 i  [/ |8 }4 Z1 [get-global-proportion+ {- W$ e  h9 z8 a
let trust-value
4 z& }5 _4 {3 r% r# _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)
) p4 N# U/ `5 e, _2 @
if(trust-value > trade-trust-value)
( @  ?' v2 e4 N" o) Z3 ]  P% s[set trust-ok true]: [, R% e- \0 j# _8 o: A( h
end
/ P- V' s" C+ E& U5 _; J( A# g8 s4 s# u
to get-global-proportion: b/ S  l/ R8 {
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
7 N0 M. {7 Z. t  s4 a, O[set global-proportion 0]/ _, D5 z2 L. H- O
[let i 0& n* P" A, ?3 l: n. i! T
let sum-money 0
; |% y0 s$ \, x/ x1 zwhile[ i < people]. F6 @5 f1 b) U* ]0 @3 Z2 A
[
( C% }' F1 p0 G" J" ^if( length (item i
5 {$ t" ~$ k0 I5 D6 ^[trade-record-all] of customer) > 3 )
- N. n9 n$ m% m  n
[: m3 }" o3 ^5 e  ]& m: K1 e0 P
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))# T# n! |6 L  J
]% K8 C. `4 d$ L% e; T; R: p0 x1 s
]) z3 h. Z; w. w
let j 0: `  a9 A* ]3 J/ d; I  q
let note 0
& }( i9 F& H6 @% ?6 z+ r$ kwhile[ j < people]; ?5 Z5 r' X9 ~5 I9 m
[
( C$ c$ B3 v) Zif( length (item i9 p6 U* Q3 j/ L( R, ?% U
[trade-record-all] of customer) > 3 )

8 F, u  u- ?9 n9 V; B[2 N- G& I4 b: f3 U- c8 D
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
$ y# A9 g7 a% }+ a' m4 R[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
" s% J+ ]0 Y, L0 u( c; H; o[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
5 c4 x4 O, t; D, |, k]
5 c' a, r. ]6 |; @  X]
' n$ A( q6 n9 N: F# A- x! ?" j, x5 ?set global-proportion note
- V5 G* a  S6 p2 Y; f& X0 P' C]
3 B' S; d$ X. Q* F- i& tend" y. e6 i' O% m5 v  `

( H1 E# O/ j/ e: ^' r5 [to do-trade
, y, ?3 g$ h* u! r;;
这个过程实际上是给双方作出评价的过程
" J3 i: P; q4 [set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
' I) Y8 {. f; c& w0 F. tset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
: `3 a$ z7 b, B* B4 L$ }6 Oset trade-record-current lput(timer) trade-record-current; K' O) i6 ^/ o0 w5 a/ U1 ]
;;
评价时间
/ A) L" T6 }- I8 cask myself [
7 J, N' i8 \* yupdate-local-reputation3 `) A" k1 I# r
set trade-record-current lput([local-reputation] of myself) trade-record-current
6 ]% E% \* J2 s0 [2 K) H2 y]  ?  L* [7 ]" f4 `0 z
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself& l% B3 l9 M; E  Y7 s# q/ V
;;
将此次交易的记录加入到trade-record-one
. l4 e5 h- w+ N/ a2 k9 r# ?set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
) S0 q' K0 k5 v& S+ S' Xlet note (item 2 trade-record-current )
: F9 }$ p4 @/ o2 G7 v! yset trade-record-current
9 {* ^. f4 J# l$ l1 p  \1 @) Q6 ](replace-item 2 trade-record-current (item 3 trade-record-current))
" z8 r6 g4 c  ]: A
set trade-record-current. Y* e+ @+ D. g5 ~
(replace-item 3 trade-record-current note)
2 X) C5 F5 J0 q
' L+ `6 C& |* \  F# @, B

- j! H% `* k' P6 ^: p9 A2 eask customer [  Y0 w0 \; Z) V
update-local-reputation
9 W5 L- V! v6 @: mset trade-record-current
! I( k2 T' H. j% o(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
. ]0 L1 x+ G, ~
]
/ V* L) J# L5 ?) j
  N9 a; O/ z" u8 O

& c# E; ]$ a% X# N% |set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
8 K* x1 Y: _2 m- B7 i. S, ~
- u( [& X) K; ~7 h% `. Y9 j, g
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))/ f5 ?/ c6 m* Y+ J
;;
将此次交易的记录加入到customertrade-record-all
/ h! x+ N: U/ _3 k. N; w* cend& m2 o, m6 y4 r: F+ ]8 o
7 U0 l' q& F  i( D5 g2 b8 u
to update-local-reputation
& J( D  |5 z9 T- O! C4 Eset [trade-record-one-len] of myself length [trade-record-one] of myself
+ i/ `" u0 k5 w$ u# h' O: g  o5 u# r5 ?7 m/ L5 f4 H. o
, t8 |7 w6 C  J) G9 C1 |
;;if [trade-record-one-len] of myself > 3

3 q+ j  y% E# n9 E! aupdate-neighbor-total4 z5 n1 o* |8 }/ g" `
;;
更新邻居节点的数目,在此进行, {( x/ y) k* ]7 N& u
let i 34 Y5 }; e3 `1 a; N
let sum-time 00 p2 W/ p. W7 W# C3 _
while[i < [trade-record-one-len] of myself], Q" ?7 }" O  z0 M+ ^. n0 R
[0 }8 G' k- y% R
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
$ c4 k7 m* h+ n, Y" P  ^( |set i. ^" S( ?$ ]1 G+ K: C5 F% R
( i + 1)

7 J* e; x$ B  x]
: o" @; N3 R4 T  P& x# Ulet j 3  s" n# m( |1 U5 n% _$ G
let sum-money 01 |$ b  L7 q& b, ]6 R: t  u
while[j < [trade-record-one-len] of myself]
) Y: S& [) ~/ R5 }! }4 E/ N4 x[
. a2 j4 n! h* k& R0 S2 lset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
/ U. n: q: p1 u4 w6 z2 }set j& [, F' K) v4 v' m" }; f
( j + 1)
  k2 B4 C& g+ r$ T& ^& _. W9 L
]
- |- L5 {+ P9 }3 j! P* Flet k 3
1 d# w. |: F/ i# K' e- I: Jlet power 08 d& Q* i2 r7 t" r, U3 H' g
let local 0
0 t% K8 ^2 R' l8 Iwhile [k <[trade-record-one-len] of myself]
2 |# D5 g) x6 l. r[
6 R! G7 e, S5 W2 o6 w7 i- }/ A- uset 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) 6 W' c/ _6 G' f" n% B4 c3 ?! f
set k (k + 1)
7 F0 @. c1 Z) F0 i]# d' W9 G! G3 Z8 u  m
set [local-reputation] of myself (local)5 v4 Q  b# e6 q% y/ {
end8 c- v9 @2 O. I0 }; b$ p& e+ `

1 T3 t  {( D2 _4 Z6 z5 Nto update-neighbor-total
6 X  Q2 P# Y0 N# L9 A: R  N1 Z
* N9 N6 \% `! W8 d0 Pif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
  y: E( z: n% B" l
8 Y7 P5 i/ _2 l0 s! r8 |% @
3 W! I* O' H+ z: Y! ^( l
end
& T+ c+ e$ `/ k# t, Z, U* f! ?3 X8 G0 H* B5 {/ Z+ k1 v9 U
to update-credibility-ijl % F# ]0 w9 c& R9 O% w

6 M3 ]( w$ G% Y;;
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。  i: A3 T" n7 r! C3 }/ e" c
let l 0
4 d0 N5 D+ m$ p( Uwhile[ l < people ]
; |  |+ t: p* M0 e$ N) h;;
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
! x) H9 s# N4 f[5 K. h6 ]; \5 ^9 |" M( y) B
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
4 N; J2 e/ z4 _" i: rif (trade-record-one-j-l-len > 3)
# T1 x$ n; W4 H- G: K; O) 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
/ R9 J' d0 d- }0 F8 K( tlet i 3" n  r7 }9 U6 q$ `. L$ S# C
let sum-time 0/ s/ c9 d+ O$ E) `7 `7 c& Y- ^8 t
while[i < trade-record-one-len]& u7 @+ M9 U- }2 v, P8 O
[
& V- g( Y: l5 p! vset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
( H) ?% Q- t3 p; P9 L% W% S( Yset i
% S; _8 P3 r  `5 ~7 ~3 X  ^- g4 \. Q( i + 1)

5 o7 U) ]5 f9 F7 ~8 Z) _4 D]9 _6 `) X6 R. ], @2 J. Z4 X
let credibility-i-j-l 0  z0 R8 T  D4 |2 u& q. K
;;i
评价(jjl的评价)
" {% c& L) ^- q7 P8 d* T: }let j 38 |0 I5 H) q# M0 Z9 d% H) v
let k 4$ ?9 J; f4 B3 Q/ l
while[j < trade-record-one-len]
- T/ {6 F" p: m[
' N' u5 K: G) j: G# u8 f6 [0 vwhile [((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
8 O7 s* ^# g% c2 Xset 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)
1 S1 t& @& ]  n5 y) Yset j
( W/ x' ~& F$ V8 Q$ I( j + 1)

9 b& V1 r9 b, t, @8 Q( k]7 ?- F: E. ?$ E) \, v; ]& h# l
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 ))
8 i! m3 B9 [* F. q* y. b( N3 q& q. }" B- T* ^9 ]4 @, _
7 Q  H! q( b7 V
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
; f4 A: ]* @1 u  l7 };;
及时更新il的评价质量的评价( `6 l5 T0 |* P  D
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
5 h: c( I2 }: M. w& _4 F' pset l (l + 1)/ `7 \. I3 Z/ }9 `2 z9 l
]
: y' R& Q2 l$ l2 I0 aend
8 @$ o3 D. }3 I5 C2 E- v* ]( m8 R
to update-credibility-list
) ?$ M4 H/ j& u' d' ~  w; d1 ^let i 0
5 b& {1 \+ W3 o1 \& Swhile[i < people]
7 F! f* J* S' U[
+ N1 T1 F; v7 E9 elet j 03 ^" |" g$ D" f& u6 x
let note 0
+ b& u, {' K! b1 r- T( }" Flet k 0
( v) L3 d  F9 H, ?* |# Y;;
计作出过评价的邻居节点的数目
. Z" p7 {- W! H+ w; H: ewhile[j < people]
9 p. w& Z  _6 u! q[- H% g* ?9 L5 h2 C
if (item j( [credibility] of turtle (i + 1)) != -1)% L  b; S3 r) y1 r# C* B
;;
判断是否给本turtle的评价质量做出过评价的节点% T( S5 i# `( k, W2 T* z, s! C* q
[set note (note + item j ([credibility]of turtle (i + 1)))
6 c* L7 @( g% z;;*(exp (-(people - 2)))/(people - 2))]
4 T" ^1 i2 t7 M& A- ^3 o
set k (k + 1)
& p* g  F) E$ k  m' g' g/ M]; V& c- O0 N+ R
set j (j + 1)
. F; i/ ]* \3 c7 v+ S]
8 S) a2 ?" C; ?0 _set note (note *(exp (- (1 / k)))/ k)$ J) c- b3 w" }( O5 ~. o, J
set credibility-list (replace-item i credibility-list note)
! C2 `+ m6 M  b* `* L, q5 fset i (i + 1), z4 s2 H' k5 Z3 B/ S' z( d# z
]
3 l( c6 ?, D8 Fend$ i) a' v* ?2 t. f! h( F/ e

' U& a( P+ p9 q  T4 u; Bto update-global-reputation-list
: G' ^& s) _/ x- \& Ulet j 0
% m/ C" }6 j' R% [2 b, Swhile[j < people]' J& `: q( s6 N  w
[
7 C; P8 J1 s( d$ Rlet new 0  ]7 R! O5 v3 S6 r9 S
;;
暂存新的一个全局声誉- W% W" O& K1 R: P; t1 ^/ M" ~6 ^
let i 03 i) K4 q* {, f  N0 X* k( E- X9 S
let sum-money 0- p4 l/ h6 e9 h. s- H0 j
let credibility-money 0' `. ?9 N" G9 B; O% H  i
while [i < people]
* N8 I. s& @% F: h9 U, l, S  d[0 Q+ v- t* I" E2 v# ^: |+ v/ o
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
6 z% s  {- X6 k, ~# R3 X0 V) Kset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)); N$ `  N4 I9 z/ D8 r
set i (i + 1)& X( v8 M. j+ X3 d3 s5 x* b
]
7 P* l  l4 T. ~" e' Ilet k 0
) |4 ?* `7 ~" O# E0 clet new1 0
' J/ ]7 a5 P5 Iwhile [k < people]; q, v5 A* F; g% D2 R! Z/ j
[
7 r8 l: S1 H* k) }* j0 s  m6 t0 Gset 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)
) u$ W3 w- e. bset k (k + 1)5 N9 o0 K/ P) L" k+ H& j
]9 B4 X7 x5 Q& j8 {  M6 `! Y
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) + q) s2 Z- l/ p
set global-reputation-list (replace-item j global-reputation-list new)
, N' E3 a. Y% f, x6 Zset j (j + 1)
1 E4 O1 P3 o" K1 O4 t9 U2 Q]
& t8 H+ e  N# Oend4 `0 S0 C5 R5 u% I
' g. z: ?1 v* G& r% F4 V7 X
$ i0 Z, ]' F1 i& e7 ^% k/ e* b% v" {7 K

$ {. H7 o9 y0 R9 kto get-color2 k0 h# }2 b/ n, z1 K
% [5 H3 ~1 p0 d+ }
set color blue
  q/ Y# U+ g! E9 |
end
1 t5 o1 y+ T7 n4 q2 k% @! @9 m  _& `+ X
to poll-class( o1 I! l- b" Y2 b. q
end' P+ n% _3 X: B) B0 G

! E7 B) ]3 X, H8 p- V' Uto setup-plot1
! _* n1 p0 E5 O3 Z7 Y4 W. H  {
. b5 s6 W& ?' h. d5 ]7 |set-current-plot "Trends-of-Local-reputation"

2 L1 P4 M  z; w8 D, k4 T+ I/ m  g% Y" M& \. X, w1 g$ l+ R  W
set-plot-x-range 0 xmax

# r  U6 A  @. n: m
4 A3 M# k. r, c( z: K5 @set-plot-y-range 0.0 ymax

9 F8 S( q5 L1 r" b- r. V" Vend) K% A1 P, \- c" S

1 t: k: \. c: z; K/ L7 `to setup-plot2% f. ]; Y! a( c% t$ G. T- |, K6 {
5 B4 n' g9 ^1 U
set-current-plot "Trends-of-global-reputation"
! {+ U# @; `6 t( t& F0 |4 C& T
# G' D3 p3 ?! {9 U# f/ M
set-plot-x-range 0 xmax
" N4 [/ _# [) Z

' N9 Y5 j3 O- s2 D8 o$ P9 Tset-plot-y-range 0.0 ymax

. r0 H  }1 a/ C6 o  b) Tend, W7 o. O; B% W& e$ y( A

, ?0 \2 C8 M* ]& ^% Gto setup-plot3' |4 S1 v7 S, `: b8 ]. Y% H
6 m6 D6 T: b/ B9 V; c+ K1 C% H
set-current-plot "Trends-of-credibility"
- H' ]1 Q  N7 k; S8 |
( |& q8 K% S4 x9 I4 P
set-plot-x-range 0 xmax

* @$ q( Y% [# r3 I5 W+ ]
& ^. j: ~+ ?5 ]: v- Hset-plot-y-range 0.0 ymax

! E5 [" X/ b; g0 xend4 K8 D- D1 d6 M3 p

0 F0 c+ }/ t- v4 B8 V" K# b, xto do-plots
( k+ l1 s0 Z  x/ v6 O4 lset-current-plot "Trends-of-Local-reputation"' @) R: x/ o5 q3 [: ?2 M1 E
set-current-plot-pen "Honest service"
4 V2 I1 K/ R+ A) A4 d5 s3 Lend
) l5 M1 b5 d/ {; Z3 h0 D+ h/ Z: [2 R: n1 p7 m; ~1 a" G' ^
[ 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.& R3 D+ Y8 p4 A" w8 E( L. _# B3 [
9 f) j, r7 O: @: m- 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, 2026-6-27 05:21 , Processed in 0.020057 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