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: 12800|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:
. O/ O. M! Q. a# @% s) nto do-business
1 A; \  A5 n6 Q3 B rt random 360
6 h7 g  x* U& {6 ` fd 1
0 a( R. {) j# ]: A; B ifelse(other turtles-here != nobody)[
" V7 R7 e( f' y( G+ }$ k   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.
, V5 A& Z2 I% Y   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
/ T" x+ I' y+ J- H$ v7 l( ~   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer, p0 v( p2 I) C# }* }$ f: H
   set [trade-record-one-len] of self length [trade-record-one] of self
0 A( H- d9 M/ c0 ?% I( l   set trade-record-current( list (timer) (random money-upper-limit))
8 e) `& K* Q/ F- F" q1 e, z* k& E" y7 a( e2 B8 C4 c
问题的提示如下:, C2 l8 e& E9 x

  A% ]& X' l/ T5 Q4 `8 Merror while turtle 50 running OF in procedure DO-BUSINESS4 w1 o- }  l3 {( Q1 D. p2 S
  called by procedure GO: p; s$ P" h' t+ D* t- V5 y
OF expected input to be a turtle agentset or turtle but got NOBODY instead.: `/ `  J" G- M; [1 [: [
(halted running of go)( I. _9 _3 n& C9 ]/ {; h6 t

' |" F% m  @  F  Z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~~8 L8 B4 Q+ X% b# M0 g) O- E- J! c
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' j$ K, X- ^& Q% k+ d+ i
globals[0 P$ G( L1 P: z4 ^7 Y' P) D4 \
xmax
. I1 z9 X5 @0 s2 N" kymax
. ~; ^9 w5 ~0 U+ Jglobal-reputation-list4 Q* h3 _5 ]6 v6 E6 M

  p* y1 Y) g* H# m;;
每一个turtle的全局声誉都存在此LIST
6 P- y5 }' @0 }( R$ Q3 ~6 d: t' `  Qcredibility-list$ V' o  b9 F1 U
;;
每一个turtle的评价可信度
/ m. d3 Q) F& Q- o8 Thonest-service
  b% S3 _% K: w+ kunhonest-service+ O3 K9 t0 E9 ?5 X. M: \  g
oscillation
8 U- B. \4 _% e+ g. |rand-dynamic
: j. u2 W1 q# J+ p% D7 u]
& I3 E' P# s; U# ~; N& @' y' z8 z" O6 s
turtles-own[  n* a1 @, B$ z3 @; i" M
trade-record-all
" _* Z0 L/ E- ~/ w( t# Y4 G;;a list of lists,
trade-record-one组成
' [8 M  B* L9 A. h' i# mtrade-record-one0 d& w9 c) B: [) x: f4 V
;;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 l* `( b; c! [9 r

+ q- v% j: K7 W/ 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]]2 D1 |( E1 X4 c& G6 _) 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]' d, ]2 {  d4 w  j7 M! \' {
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
6 R" R! i- o( x  u7 Q( pneighbor-total7 a; u- U- i. I3 l7 Z
;;
记录该turtle的邻居节点的数目
+ i& E" f7 P  t: Ltrade-time
8 H7 L8 H' }9 Q6 n# ~: q1 f, ]0 Y$ W;;
当前发生交易的turtle的交易时间7 Y% j3 D+ t. O$ u
appraise-give! n* A/ w- c6 ?# {/ W5 Z  c
;;
当前发生交易时给出的评价
* {$ W2 P: g8 E3 K$ Iappraise-receive2 M. l. _$ A0 Z7 l
;;
当前发生交易时收到的评价) b! u( {) [& X4 K1 R5 q
appraise-time
! \* g: U) `# m+ G, \/ \8 r% f* I;;
当前发生交易时的评价时间
9 v+ z* G& _3 W' v- m. tlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉: y* F$ s$ g$ X1 ^4 S. t7 ?% l
trade-times-total
  w. {" b5 R( }0 ?3 _3 H9 x;;
与当前turtle的交易总次数3 q! E9 y0 v8 [, g
trade-money-total
/ X/ l& [) X* B4 u;;
与当前turtle的交易总金额4 A2 S1 r. ^: K8 D, G% `
local-reputation: m. Y% @0 l: _8 b. H
global-reputation3 X* y  U/ `6 M2 l. ~$ U
credibility
6 v  J3 P3 o4 _  v5 `0 ~# p* V;;
评价可信度,每次交易后都需要更新6 R- K# H+ ~) _; G( }
credibility-all9 w$ i1 n7 R% M" l' }# ?  @8 h( @
;;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+ Y/ @$ T, Y8 r* c
* w* e$ Y4 o9 c; w& C8 a8 T
;;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) k5 T! o- _5 q. C' X# B
credibility-one
: _. S  z8 d2 z8 N! F;;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
& E2 l, }- \) sglobal-proportion
3 a: {" O; h% t3 {: ucustomer
/ |- c- _$ @3 p" \$ Kcustomer-no
1 H0 Q8 W5 o2 @; F9 l2 n5 s: [trust-ok# q" M% Y* \! K8 z. J
trade-record-one-len;;trade-record-one的长度
2 w$ ~) L6 w& R7 P]6 O! q8 {, B! t1 Y5 C  ^# m

. p7 n) p2 h9 d  C& Q+ b4 o) A) @;;setup procedure2 O% E" p: S* ]+ a6 I8 ]/ Q

+ |% k* d* e$ T0 `* [( tto setup/ s* N7 |$ l5 O6 n# B

$ S% ~8 U+ S& L5 S6 ^- s* f. Ica
, z  I! M7 ]; c) I0 d2 T
- ]/ n+ h$ Y  m3 v) V; r5 m  S
initialize-settings

' b* Y. P* S" \: f' n) O# q( a0 H
crt people [setup-turtles]

* R9 v4 @+ b7 g; ~, u$ }- s* @& P
1 z7 S* X) s8 s7 m2 {  E& Oreset-timer

# {* i/ v) K: W: B9 A
, h- I% u7 G& b8 y3 W1 f1 npoll-class

4 C: T1 A8 x* T7 t* _- o; d4 {5 r7 _
setup-plots

2 F# |0 {4 Q6 I3 A9 R* g2 R% g& h5 q$ \- L9 b
do-plots
* w& F' H( }9 S% B
end/ h5 ~8 F0 m- t, ^& E3 [4 ~$ t: B* Q8 }
9 Q: C6 j8 [, `1 d
to initialize-settings
# j( L- N3 Q: V! y8 G2 p: x# v$ ^, s
& o. W- x  Z% V4 Mset global-reputation-list []
5 b9 g6 ]/ j, U$ J* w8 I8 u* w
* G$ M; @5 T7 U- ~2 c7 v1 D4 K
set credibility-list n-values people [0.5]
' A$ }6 ?, i# d& S* X
) k- |1 X& V( M1 b  \
set honest-service 0

/ V, j; n7 N; y/ a8 S6 ^! ~2 I  d4 b+ b, ^3 _! q; a  E/ t8 G! C
set unhonest-service 0

$ T4 m. ~* {- h6 D- k8 ?8 t* B% N9 l0 i8 N5 e$ e$ Y' M# ^
set oscillation 0
# r4 |& Z$ A/ X  B

5 n0 k) H5 Z" fset rand-dynamic 0
: y5 `/ K0 a; N& ?6 G
end2 Y' i7 g9 P; H: S( A- F. e6 A
: _8 P! `* q5 {: p6 G( w) j
to setup-turtles
4 `, g7 M  E4 cset shape "person"4 Y/ [5 J2 G; X4 e
setxy random-xcor random-ycor9 t5 i/ _, [. k! a
set trade-record-one []) k8 Z4 [, J9 c3 J7 _: A

3 q. _8 x. ~6 k) Fset trade-record-all n-values people [(list (? + 1) 0 0)] ( r0 h. ^- A, n; v/ [. J* s

+ w) @/ E3 c$ s7 C8 B% c5 Q# lset trade-record-current []
- E4 n* F# P+ |2 \8 R) lset credibility-receive []
% n9 X. ]0 a2 g0 G! n+ O' ^set local-reputation 0.5. p( ~  U% L- s6 U2 k: Z
set neighbor-total 0
$ E5 h; }& G. E# xset trade-times-total 0
: l/ c* r( r( n' Q5 f3 J7 dset trade-money-total 0( w0 \/ w; D- y' Y$ F: i% C
set customer nobody0 _1 x. q% {5 ~. Q, ^; d) X& t
set credibility-all n-values people [creat-credibility]
) {: C& c# U4 F, B% D+ rset credibility n-values people [-1]
+ Z. n% ?6 g% C; m& n- Fget-color
! o0 y! L7 U: E
3 l! q, g0 K- @
end# T$ C5 k. l. c/ u0 A5 {  I+ Q9 ~
8 r) E& z( C$ S* N* B7 D- d
to-report creat-credibility1 }- Q/ X4 e" q5 A. g+ I
report n-values people [0.5]
! P* T4 X2 i+ k- [; Pend
2 x8 h; o! c& u% h2 K# ?4 F1 _2 r" w' @3 R4 F8 x
to setup-plots# e  U/ H$ }- K

1 T+ r( b2 z- `1 V% Q0 iset xmax 30
0 u" e. |* h' H
5 H' ~0 g7 C  Z6 K# w' F
set ymax 1.0
9 U8 @& a) @2 y7 {' n& n/ N6 S

" E* F2 }& ?% Fclear-all-plots
. L# s/ {% K! t6 B" l; [
7 S% k. C* ]* a: ]
setup-plot1
9 r  f9 J( P9 M, C* O8 g9 |; c
" H; c5 K" G6 P& ^! k; V+ {$ C
setup-plot2
" z2 H& U4 n9 Y: J

& x" ^, u* ]8 p  p" U) c/ xsetup-plot3
8 p) j' r: l6 X4 z, l
end
. l3 {/ ^9 g( j, P. P' c( G( [9 b7 d
! F1 k; H4 R  E7 T, [;;run time procedures. @% j8 S( D& u% a) i  {! x7 H+ i
2 ^" j: u0 o9 s& E4 _7 o
to go
, T* W) B) {$ q4 |
4 b" ~, V6 _6 t: z  |ask turtles [do-business]

% \- T# `- G$ b+ a: a. h) rend
5 O( F1 y0 W4 t$ g$ i! `
# F2 x' E& J2 }! bto do-business
5 F+ @* @9 S5 m' Q
+ G% K; E0 z& [- a4 c5 M( h; Z' a" ^
5 _6 Y' F9 K1 M- Q: P2 b
rt random 360
( l# c  X7 ^' C! E# ]
, o% [# q* {9 T/ ?0 o
fd 1
& Q; J3 S$ s; X. n% K, l

0 @0 S# p! _$ q5 [/ pifelse(other turtles-here != nobody)[

; [5 s' X% J6 I/ G4 D( c, r/ `4 T0 t9 Y0 ~( Q7 z, n! D
set customer one-of other turtles-here
9 v9 Q2 l' o5 Q' D# e3 _* l
3 R- k! n' e# V/ v! b- R
;; set [customer] of customer myself

( g* Q; Q  P  d- M
. t; _5 @; F# u1 l" X5 c0 Z: \1 \6 oset [trade-record-one] of self item (([who] of customer) - 1)
4 s6 t) v( d/ c9 `8 G[trade-record-all]of self
1 C" T3 m+ v4 `8 f  \1 c;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

' d! S" ?) Y) p" ^5 g
& n1 I* n0 ?& {3 Hset [trade-record-one] of customer item (([who] of self) - 1)
: B5 p: o! B; [" a2 `$ f: u7 }[trade-record-all]of customer
' \9 |" M# x% I& t. l3 K

  [- i2 m: ]) M7 n. r7 H! @: Kset [trade-record-one-len] of self length [trade-record-one] of self

( C% A: W0 N. r! p! i* M
" s; H8 y4 j; b4 Lset trade-record-current( list (timer) (random money-upper-limit))
! I7 a$ u$ p9 n1 X! Q* ]: d: X
& I7 F# t$ k/ t: n; G. @0 q# ~8 f4 N0 _
ask self [do-trust]
, t) A2 Q4 T2 C* \0 }! Y;;
先求ij的信任度
* {# S+ O8 x! B# s
3 Z- G9 n8 N$ |7 O+ m( Jif ([trust-ok] of self)1 @! N3 z, b" q+ x
;;
根据ij的信任度来决定是否与j进行交易[
  b* v' Q8 @" w0 E; p3 E( }ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
* l$ }. \! [9 d# J* {1 s# s& K) A, V' z+ A7 s
[
, [# x9 x( x" }9 I
1 I5 N5 b+ I8 k* M- k$ y" n
do-trade

5 M  U! l8 B/ H* r" e4 O
1 ?4 x  N; E: H3 F6 `( \/ n% Aupdate-credibility-ijl
# I3 o; K9 w& q2 b0 [8 l8 q

" ?$ E6 ?; h) `' Tupdate-credibility-list% a9 {( S: z" J* c8 H) R

; B' |1 i9 C% p9 b8 Y6 P+ c% H. k3 F+ d& ]/ p
update-global-reputation-list
0 X' P( w7 g9 h. f( c0 i5 O
+ a0 M, I& }+ G' R8 u4 A( u
poll-class
2 `$ [7 {2 j( f6 D4 {8 X+ q5 H
( o" u3 N! R7 h3 F, Y7 d
get-color

2 t7 @- ]3 Z8 K5 k7 X( E4 R8 S1 Y: @* H# d
]]4 z& E4 ?  h3 U
& U' h/ @- c- a
;;
如果所得的信任度满足条件,则进行交易4 ~5 }4 ]3 T$ F3 [6 |1 o! J+ b7 U9 F' y
' D8 ]2 h% f( {1 K. w+ Q7 x0 E
[

+ Z0 `# L, c1 W( M! n7 K9 E
& z+ Z" j5 _3 c, l9 X5 ^: Grt random 360

, L! A2 h( u* i9 A, h1 n: ?3 S
7 Q2 h0 q5 }# T1 C' L8 ~fd 1

! u/ f/ j2 u  e) R6 \6 o- [
8 s- T$ N# W1 j! D% j$ D]

0 ]" L% n) H" x! y$ }& ]6 `& H& ^% ]9 l  V9 R/ r
end

' N8 T0 @% ?, f+ A( _  J4 P8 f" r% H- ?! B( H+ {
to do-trust
" e1 t3 J) {6 s$ jset trust-ok False
. }7 A$ M+ C* J: }5 `1 t: \: |, D( v. @. r9 @6 L  C8 ?3 m# ^' Z+ @4 n
* \% v+ E1 h& H3 z3 _" l$ Y8 Y
let max-trade-times 0
+ L5 x8 K) l& ^% sforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]! H# x$ F) b9 p! I- t% h" g; Y, |8 a0 r
let max-trade-money 0
" x6 Q: S2 i8 G: j. G; ]+ ]' tforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
! \( P$ m: j. n* Y3 G2 Ylet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)); d& a& E& V- ?* b4 k
, x6 v7 l/ W3 G$ S5 g

% k3 _/ {4 T: u, g8 M0 f1 Gget-global-proportion! W  Y+ U6 C! i: C3 ?" ^* @+ y3 r
let trust-value: w1 `" k7 t% _0 U! T
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)
8 A/ ?, J/ ~( C  d7 J* h1 ]
if(trust-value > trade-trust-value)" |$ M4 U; X6 @& ~
[set trust-ok true]- a0 Z& T! a- B' A+ C$ X) \5 z
end
7 p3 G- _( ]7 v9 n# z
& Z4 G0 M- a8 y, \to get-global-proportion0 G8 c& S0 e6 K  o2 b  `
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
5 H6 K& B6 Q7 Q( ^* i[set global-proportion 0]
: T) R; S% ]% |- [2 l[let i 0
. c, Z4 t2 F" Y9 h3 |let sum-money 0! i- p1 j6 m4 |. @2 S( L' q
while[ i < people]4 `; b$ f$ Y0 k5 P! Y" `  d  p% N. r; o
[
; Q! ~2 T) H' Nif( length (item i$ o- R/ g1 j+ M& f+ r6 j# |% o/ S. J4 N
[trade-record-all] of customer) > 3 )
' p7 c3 }; p& p  }6 n" ?
[  |; v) r) j4 N; f; q* F8 W$ ^' s$ P
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))' [- g) c9 E) r
]
9 K0 o) B/ W# U4 p' {- E6 K]
4 W; {2 _3 U8 ilet j 0# j/ y) S: S6 A% f0 m; q
let note 0. O* j  f! n$ b" K
while[ j < people]
: m  H. z" n  U5 a' w+ ]. ^" g$ r[
: R3 U# d5 M2 _: T  V3 F* R: s  h, jif( length (item i
1 j& c* Z, q8 b5 w* _  u! n* N0 B% |[trade-record-all] of customer) > 3 )

# G4 D0 h2 W, p+ v  E! j" N/ \0 n$ D[
+ k) I- h, q( y# a* Oifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
6 o. D6 b0 Y5 u9 r) m4 \[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]1 {! Z! f+ j5 X+ ^, k$ I9 W
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]% n5 t- p# y/ y
]& a2 N: o- [" a0 c, S
]
: [8 K/ X8 q+ [# n0 \set global-proportion note8 L# h' Q0 T2 a. R% X4 ]" ~
]
. `% R- n1 V3 T( D1 Xend: D+ v! v5 X( d# c1 X
' c: ]/ Q" X: m; h1 C" W
to do-trade
( _3 u- {! L' Q+ X1 n; A;;
这个过程实际上是给双方作出评价的过程. Z8 x. W. ]+ r4 d+ N
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
8 p. r% q; h/ s+ y# _, Q2 j  d% r* @set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价6 J* [+ A3 e. h( z7 ?& [$ E; N
set trade-record-current lput(timer) trade-record-current# v! D8 A, t0 J/ g
;;
评价时间2 c% x# L8 k/ ^* f8 \
ask myself [9 ]* i' g: F9 P* }8 ~
update-local-reputation4 b3 s; R/ ?9 ?2 I5 O* c8 C, @8 ~
set trade-record-current lput([local-reputation] of myself) trade-record-current5 U6 O5 Z/ {! ]. J9 X" R
]! m1 |! V% Q, B2 x" b& A
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
+ s6 P& K% ~8 a5 ^2 K;;
将此次交易的记录加入到trade-record-one
, l) [. E4 `: V) {( D, tset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)- z2 @: I! B1 M
let note (item 2 trade-record-current )
+ }' d2 ^( n6 N- v; U7 ?* qset trade-record-current* G3 z& H4 s5 y
(replace-item 2 trade-record-current (item 3 trade-record-current))
1 v4 q) h- C8 N0 a( Y) {
set trade-record-current
3 Q! \  E# s9 V  N" T! H8 b(replace-item 3 trade-record-current note)% `# @% D5 y$ \* i, T% _+ r
: K7 E) A1 y; s

, q+ T, b. A- p% f* ^) k8 qask customer [
7 i* I( g) \$ E* ?update-local-reputation
0 O  Z, k1 v0 {set trade-record-current% o1 b8 M3 }% K! |& `8 b3 D4 D8 n
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
7 l/ I& J, H8 b8 T/ L0 A
]
# D4 M  I( @( v; d) O& ]# x" w/ A/ r- _5 S9 R

8 q2 ^, O8 P/ ^set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
4 S' p& U, g- `9 \$ n, j, M9 Z; s

' w$ y7 ?' k" q- G5 d/ U! dset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
9 K+ [4 ]0 T, T+ q. |7 x;;
将此次交易的记录加入到customertrade-record-all6 ]" K4 a4 G. l/ f2 C
end2 a7 y- I/ C) N2 g
- E) p3 V- I# j* o; ]( [$ G6 j. G
to update-local-reputation
+ B/ d5 Z4 A; Z* _7 k0 qset [trade-record-one-len] of myself length [trade-record-one] of myself" m2 _3 U& W$ ?7 v" {
0 z& M5 L, f  P  u
2 x( W+ l& X# t% n3 d1 K, i! @- U/ {( M
;;if [trade-record-one-len] of myself > 3

2 l# R0 ?* Y' b- Dupdate-neighbor-total& n% u. a& ~3 \- a) G9 G; j$ a) ?
;;
更新邻居节点的数目,在此进行
" X( b6 H/ J5 Z! _9 v/ e7 n( rlet i 39 i! ^( K5 m7 m" x
let sum-time 0% ^/ T8 w; J5 ?; Q2 h
while[i < [trade-record-one-len] of myself]
- [2 q3 \$ G' n; U% L/ Q[7 C" _& ?$ V3 S  k
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
. M* k/ n, y3 x) q! \+ jset i
% ?7 ^0 c; k4 A" k% y% r8 R( i + 1)
( Q7 U) ]! d  h5 Q5 l. _4 C
]
* @0 o: g; q8 \% J- g: y, H* clet j 3& U" l; Y+ ]- U
let sum-money 0' [& @. n  z3 n- o1 k1 a/ M9 }0 c9 b
while[j < [trade-record-one-len] of myself]4 U* x* R: c( @* s6 z
[9 Z7 ?: U& ]: ^3 `; C0 w
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)" n/ b/ |3 ~) J$ O, f
set j( R( K3 t! }% B9 [+ G
( j + 1)
( t  g. f1 Z0 d" j/ x) ]
]4 R. N; d2 m) W4 n; N4 B
let k 3
( q# ?' W8 w! elet power 0. @- ?/ n! j4 }0 P; @0 q0 g
let local 00 |8 C( H2 m* u) _4 I- S1 j
while [k <[trade-record-one-len] of myself]
& X2 {" t8 T2 J# ~5 v[$ `  r- `6 v: |
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)
2 M+ e' I( A1 u* N4 e" H( S7 Iset k (k + 1)
3 b# I8 y& G( N3 m]$ |" {. a0 c4 h) m* N8 W" N
set [local-reputation] of myself (local)
+ V! v- B3 P; h8 n% A7 L& jend% l0 w3 M. Y3 }: h* @, J

# H; ~4 m8 _+ a- H; |- v% m6 `to update-neighbor-total
4 U% N0 z; \) d% X7 _, B/ w, U; L* v
2 C) O0 Z+ M" h7 `if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
' Z  l  v: V, M9 U
9 A* S* m- N4 D. J4 `) `$ b+ A# ?, Q
& q( }1 \% W; E1 j$ Z9 c/ s
end
- u3 T, y6 Z( L
) I" ^" k# ^0 e, v  y' jto update-credibility-ijl
) T7 P0 l2 l1 Y
, [# d1 q' P' l4 e: {4 r' T9 O. `;;
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。
3 N; `9 \9 W. W% T9 qlet l 0
' _( W; q, y$ |while[ l < people ]; q1 c6 V8 O0 {' x1 i+ n8 a" G
;;
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# w* V2 J- X; v( }; V[  N1 [; `9 z3 N! p4 W
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
9 E7 z/ c9 K& i; ?, O5 eif (trade-record-one-j-l-len > 3)
7 f! i5 o! }9 _+ F[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
5 a- F$ @) \7 ]0 Y  j0 P! flet i 3
" y- F0 h5 o5 W& Z& ]) ^let sum-time 0
' f% _  r: V" }% T/ S/ L' w) m: {* pwhile[i < trade-record-one-len]
, W9 j/ O& `( p# L, B4 W[4 T; d% i+ R- a! g% p
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )" G7 U2 L6 I8 a9 s# U- z0 u
set i
7 X; @; m6 @; C; z  ?+ e" Q6 l3 @( i + 1)
) c# R# g$ N) O3 w& _# e
]. `: L+ F9 B1 o" d& b9 v4 y
let credibility-i-j-l 0+ J! ?/ y# p2 p3 L5 m
;;i
评价(jjl的评价)
" r8 @$ n! m& y$ t0 W/ e# t6 R0 Llet j 3
$ b3 ?% _2 S' c- Elet k 48 j" p0 g. x0 [# `* X" O
while[j < trade-record-one-len]8 Q+ P5 \  ~& C2 `; e4 [, e, o
[" b/ e: A1 z9 b8 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, Q) M2 l% h& |. p/ x) f7 O& u
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)2 Z. U4 |7 J- X: x$ Y; j
set j
; M; R% H5 X# `. f( j + 1)

4 |8 G+ I$ Y( G  r8 Y, U: {]
, [/ @9 ]3 D& z  e! }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 m, F1 V3 C* W' k6 J$ B+ t
0 a3 p2 B& V* `: G/ W( t! r

* ^) G8 u/ h" a- L. O8 L% ?' ilet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))( I8 m7 x! u" a8 h
;;
及时更新il的评价质量的评价
; d& v0 N3 R! I6 Lset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
7 B& H2 _9 o" bset l (l + 1)
2 I+ W& H4 _2 k+ l]' |/ j! ^, ~# r. ?
end4 z1 Z8 E2 ~$ H  H
! h( l7 z& x3 B/ R% v$ i6 K
to update-credibility-list$ |1 I  a4 y" k% Y1 L9 o/ b
let i 0! V7 W+ h% X2 J' H8 d. \( Y
while[i < people]
+ a& M# ?7 A" R2 \6 k[
& M' i  q6 N( G" D1 vlet j 02 T+ \7 O( p: M* d) Y9 V! w( m) e8 h
let note 0- H3 [( i! w* I  Q( U
let k 0
: B& H- R6 O, i  K( [4 C;;
计作出过评价的邻居节点的数目) j) `! d" T- K6 |6 E
while[j < people]& J8 a- k: N" Y, ^
[
, l7 e0 l# H. I  nif (item j( [credibility] of turtle (i + 1)) != -1)
! H- v' I8 R" z/ v;;
判断是否给本turtle的评价质量做出过评价的节点
; z$ [) N% m7 X- e6 X5 a[set note (note + item j ([credibility]of turtle (i + 1)))
$ o( D; g. Q0 B) c+ ~;;*(exp (-(people - 2)))/(people - 2))]
9 D) d& w% @5 B8 @
set k (k + 1)2 }$ \, {' W8 l1 z$ w, r
]
2 ^+ O7 @& Q  uset j (j + 1)
7 E6 B; _0 w) F  N$ {; M, w$ H) k]6 \6 B' Z9 ^. m) A# O
set note (note *(exp (- (1 / k)))/ k)
" t, q6 o. }4 w9 n" t4 R* _% Rset credibility-list (replace-item i credibility-list note)
0 h2 d& p3 b, Vset i (i + 1), r( o& @4 F, ]* E; h
]
/ s4 e# H. \% W3 R! \, N3 L; l$ n6 D6 N# Pend+ z7 [: H$ c7 H

* C$ ~* o; p' b1 \to update-global-reputation-list+ J9 S+ ~- z2 L3 I' e0 T( w+ \
let j 0) p2 s! Z: g" V+ t  W2 W
while[j < people]
3 g& l% g! l' H; Y[# J6 q0 _( ^8 A
let new 03 y8 t" P- n9 s% f$ ?) F+ M7 [
;;
暂存新的一个全局声誉& g  Z: m* x7 t( T! n
let i 0, p: \- L. j: A( W" g; L9 j
let sum-money 05 y2 M" f' Q1 n! W
let credibility-money 0
5 d: W( @9 b  b0 Hwhile [i < people]
# u  C# P, V3 p# p& i" j( g5 Z# ]0 s$ M[3 \7 G: I- P  B4 J3 L
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))); s) k2 u% j& Z- h( L* F
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
3 e* `8 |0 B. `8 P: Cset i (i + 1)6 L! y" S4 H% A5 K5 D% K2 m
]
% N; q, k! {5 t% u+ d; k2 Alet k 08 K/ n/ X/ L8 ~) k
let new1 05 z" R# ~, I0 [: v: f( ^, f
while [k < people]" @* A: a8 B1 T9 ^9 }# P
[0 r+ u* a2 Z' t% t3 {" |" R
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)( V* _! H6 i: x3 S+ f
set k (k + 1), d8 X% ?- K, v* i% `
]6 g! N- r; {0 I% p3 S
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) - m5 A8 Q' s6 T. z
set global-reputation-list (replace-item j global-reputation-list new)
: v: `) [$ y+ U2 a2 I5 S8 a6 Kset j (j + 1)0 Q: h! G- y: e
]- r7 L* |3 d# M5 O; E# Z; J0 E( Z, C
end8 A9 s- g- O# X# g  U& Y( ^1 W. U. H- U
& q% X3 A6 t& V+ [2 \
4 r5 r; W$ T7 R
% r, ?. R0 g, L! I7 e2 i' S8 ^
to get-color' X9 O8 q, k9 o  i) z* h) n7 n5 n

6 L% Q+ c: |& Hset color blue

$ s9 M7 p9 L; k6 v4 u9 }1 eend
* ^$ B- l4 D) m8 B- {& B4 x7 m! y# Z; v5 L1 I- U" X7 Y# a
to poll-class8 z0 b9 [- y) H& A  n7 `- ]1 U
end
- |8 f7 u- G$ R2 Q1 ^( `; V; m1 Z" c
" m4 j& U# p! n2 h/ G: sto setup-plot1
1 Y5 f6 V" e. Z0 l. s0 v6 H% p, C4 v) ^* C* D3 n, \. x8 d! L
set-current-plot "Trends-of-Local-reputation"

# V) ~! N% v3 ^. [, z4 a8 _( w3 t. F4 @" ^7 e* W
set-plot-x-range 0 xmax

/ H3 H" k. I" z6 ^; d0 g6 S$ X; O7 V4 T$ Z4 ]2 U6 F' @
set-plot-y-range 0.0 ymax

* I" u/ J( X; S# H! Tend
8 a% {% e0 s' _) q* t7 U" E5 O: r5 u4 x( B  _5 }! I0 l! c: p5 a% X
to setup-plot2
3 p/ f% N# P4 p9 P* S+ H. i  G: k! t
set-current-plot "Trends-of-global-reputation"
1 g. b+ J% i9 s7 s! L* n

2 u) l+ O- w2 G9 g  Pset-plot-x-range 0 xmax

2 B$ T9 l3 |' z& P
2 ~3 w" z; f6 Kset-plot-y-range 0.0 ymax

- X; D- q. p! p# E; l$ @) Uend
7 I, ]2 }$ x( b
% c5 @4 ?5 M2 E: ?! _+ cto setup-plot3
' Y" I% s% r& _& ^5 y" [, f5 S/ \, d( J7 T5 ?
set-current-plot "Trends-of-credibility"

6 A7 T- ?7 P& h5 o" Q5 Q& e# r6 u$ p9 W1 Q% b* h/ y9 q+ Q; J4 q; q
set-plot-x-range 0 xmax

4 |% v  a+ P  t' F# i8 T3 |8 T2 I9 p" b6 C. C7 i- r
set-plot-y-range 0.0 ymax

8 K4 }2 f, Y8 R  Eend
9 v% e3 Q) E% \$ b! X- ^# u2 o1 i( \. i- S0 H/ Y
to do-plots
1 b/ L: Z! G5 l' `set-current-plot "Trends-of-Local-reputation"
* E- D: K. }' ~6 f8 F( I' w& q* }set-current-plot-pen "Honest service"/ u- u& W4 x% W$ v
end/ [/ b$ b5 f6 R, ]8 P: s# L7 F5 Y
  q8 Y/ g' B  r$ A0 i
[ 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.
) M1 y- X" O: `8 `  k; f* c' S* h) a* s# R
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, 2026-3-11 03:38 , Processed in 0.026049 second(s), 18 queries .

Powered by Discuz! X3.4 Licensed

© 2001-2017 Comsenz Inc.

快速回复 返回顶部 返回列表