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: 12677|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:) {6 Y" w* g' t
to do-business
2 P3 P6 b% d& d" G rt random 360
! z& a' v, X6 G0 U- w fd 1" e9 Q" ^  y! T9 o+ B, ?$ j
ifelse(other turtles-here != nobody)[# d: k2 ]9 o' R) |$ Z5 r
   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.
$ B0 y& g, K2 @; X. h) {6 @+ b   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
, ~* V# i  E8 r0 `% ?& L   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer4 U  J; P& a5 O1 s8 r& Q
   set [trade-record-one-len] of self length [trade-record-one] of self
5 x# x* H3 K- a1 q$ ~& D' l   set trade-record-current( list (timer) (random money-upper-limit))
3 j. q2 }' x/ G* U1 V4 d( e
9 p3 b; c4 L: ?2 L! D问题的提示如下:& }  }. ~5 \) l$ h/ q  s  G' O
# h' ]* {5 c7 j1 o
error while turtle 50 running OF in procedure DO-BUSINESS" [. F+ t7 F3 m  ~" q
  called by procedure GO
, n) T9 e, F- ^" R. k% l( uOF expected input to be a turtle agentset or turtle but got NOBODY instead.
2 J, V7 O- Q: O5 c8 s% S! ?8 J
(halted running of go)
4 ]. T1 h- l6 l
5 l/ O0 m. v& p& 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~~
1 @4 [& v6 A& |: Y& S/ J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
0 z1 [3 q5 ], U, X3 r& B1 G0 Nglobals[1 v" X* N3 q! L0 \- M, K
xmax
! H2 _& [) {7 C9 M7 _- y  {ymax
* I4 i2 h% w5 e6 n- k" B, eglobal-reputation-list. N# w$ a- o0 X  z3 x+ |
3 s( v2 h* W; Y* x) y5 A) @
;;
每一个turtle的全局声誉都存在此LIST9 w* G, g5 R; w& V: |1 d
credibility-list0 ~8 w- g  y( {
;;
每一个turtle的评价可信度
7 b) f, B% v: Z$ [$ R& hhonest-service$ u* r3 l* W* f2 M
unhonest-service3 k: y  {8 O2 Y. @
oscillation, ~2 z, z7 X  `* ^; ^! J0 \
rand-dynamic, q) z& B% c% X& D! d3 H7 ^
]1 ]1 P7 C  t3 m4 k: b& Q3 I: g% f

+ l$ R& S' f% t! n' M2 S; ?turtles-own[
3 J' ]3 B1 ], c: {( w& J. Z. E2 Atrade-record-all4 _9 U5 [( c. F; Y- Y- i. V9 D
;;a list of lists,
trade-record-one组成
4 I& g* ~0 a! p7 R5 v0 U! w9 y9 [trade-record-one0 h) D2 n8 j$ ?% |& y
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
8 a1 j  d+ J$ L, {$ \' D0 P2 W: T7 L4 s* ~2 _/ b
;;[
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]]3 z" A9 [( O8 Z  O/ V6 V4 ]/ C
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], `) _, W, T5 w3 l. h6 `$ {
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% v* {: \5 [8 n2 |" k% s2 r5 q
neighbor-total! z# u1 ]6 L: N6 c
;;
记录该turtle的邻居节点的数目, K0 ~  B* }3 @1 u6 C. }
trade-time
9 _) o$ I* t' h/ i;;
当前发生交易的turtle的交易时间- Z" |7 S' j2 t3 U; J
appraise-give
8 F8 R4 ?: R4 C;;
当前发生交易时给出的评价
* y" t" J1 h0 O* J1 `appraise-receive
# F0 C- l2 V4 R# M;;
当前发生交易时收到的评价
( K3 q- X7 D* B" N$ T# r4 g; }$ Xappraise-time; p" n6 y. F5 y9 f' i
;;
当前发生交易时的评价时间1 V. T  ~! q; r- T. h
local-reputation-now;;此次交易后相对于对方turtle的局部声誉7 C. ~% [' {* Q$ M6 M+ O
trade-times-total
0 W) e7 x' s. M( b% @;;
与当前turtle的交易总次数0 U1 [: h; x; o' H1 R
trade-money-total9 p% p' U* B/ u8 ^% e& }0 ]5 v. X
;;
与当前turtle的交易总金额+ y' D! |8 ~$ o% W4 @5 a
local-reputation
' c1 W$ I& Q3 ?4 X0 e" r2 Jglobal-reputation
8 A! d  b9 Y" e( {5 A& r* B0 Z2 Rcredibility$ J! ^! a. S( ?  [  H& P1 R
;;
评价可信度,每次交易后都需要更新" \: G" d  C( x0 C% ]0 d8 s9 W
credibility-all
! P; [6 ~3 M6 q1 O8 f& Q;;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
* o( t9 L4 ~. G* Y$ |+ p6 X0 G) R* h5 t% m! o4 s
;;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
" L6 R% n( \/ [9 M; Gcredibility-one+ C: @: X& c9 s; f& k! 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$ m) T' Y- a. i9 S" v, H
global-proportion
/ v, D% X% X6 a3 \customer9 ~; {4 p) u/ q& c7 I
customer-no
- i& t8 _( w( R4 g% o5 }trust-ok8 S- h0 r, c2 g2 R6 p
trade-record-one-len;;trade-record-one的长度7 {6 i; [& M/ h! K9 r
]
5 O! V* N4 |$ `# P( U3 f! r) @. s
, @: e! Y3 A" G  V1 f9 `;;setup procedure/ N8 x3 p1 ~% B4 W7 `- Z  d
1 o0 i; J; I& A, r
to setup; b# h( ]( p$ F5 T4 J

+ T1 f+ s+ R# v6 L; b  Dca
% n5 Q  q0 S/ O9 S) |
9 z+ l/ f) z* u+ D$ ^# n( }# ?
initialize-settings

+ S4 u! y% R6 e: o* ^# e" O+ a# s3 z/ X# E# e; L
crt people [setup-turtles]

' f- L  X: ^& u' d' h
! B6 X" p3 _: }" Z1 t: Ereset-timer

4 T0 N4 G0 [7 }7 A) S' Y  ?2 x- Z; g& T/ Q2 I: a: [
poll-class
9 n, r+ T- v3 Q. ?1 E
6 j5 x* u  d0 I
setup-plots
" {& i0 L; y0 u* e: _- n
# J7 k& g; O- J% w) a; F
do-plots

5 G$ U% _8 }! E. Dend1 l* g7 R/ ~7 O" @2 q" k
* U2 _3 z  `3 _/ w% u( y2 N
to initialize-settings
, h- d$ U; X/ Q2 Q: M4 J+ ~# y) w$ ]& W, R  e- O8 G5 c  O
set global-reputation-list []

2 P% g: b) [& ^" L2 w& k0 m: L' O8 t# i8 f$ \
set credibility-list n-values people [0.5]

# g9 S* a$ J, Z7 r9 B3 M5 O- O# G" O8 W0 J5 ^4 C
set honest-service 0
0 G% e: `) ^8 H* J, j* u9 ~

" P7 _4 U, d: D" l& D3 kset unhonest-service 0

. a/ O* L) N- M3 n3 ?( ?
1 ]) E/ v8 p! R+ i4 Wset oscillation 0

) {4 v7 k, t* k5 ~
/ ~: e3 \8 D+ [! _6 `7 N( V6 D0 {set rand-dynamic 0

' p0 [- o) G% }2 @/ |( xend* ]+ T6 R, z- `- ?& S. a+ y
) L4 j/ j1 X  M; x. y; L
to setup-turtles
8 B4 L1 y, d8 S* C3 qset shape "person": C. P2 l9 `7 w# W: m
setxy random-xcor random-ycor
" d5 _. {! y4 J  t3 _set trade-record-one []
3 _( i( d2 ^# `/ Q- @4 @; w9 Z
. Z* a' l. P  L, Y9 M
set trade-record-all n-values people [(list (? + 1) 0 0)] 2 l) ]0 p3 p  C' v! ]( _% l$ V
. {) a6 x& b  ?- h- X/ a9 E
set trade-record-current []
: x' q: p, z2 X- D% uset credibility-receive []( u+ i8 E# I" \- D& P
set local-reputation 0.5+ b" s1 U! K3 Q0 E; }# U4 g
set neighbor-total 0. D5 V- T4 Y0 {' i, h; z
set trade-times-total 0
% B  o) @4 K" [/ sset trade-money-total 0
+ G. Y- t3 k: A" n7 D; `! @set customer nobody4 b( F" W* G, y/ U" h
set credibility-all n-values people [creat-credibility]
% V/ O% m' g) \set credibility n-values people [-1]( M& M6 w9 z5 C+ o
get-color
$ E! P% ^/ M. B& Q, p% {: f

3 B! x5 ~  A: x! K+ e8 Mend) \% K% `! R4 B$ j  W  \( r
6 _: |# s4 C# S# P) e, K
to-report creat-credibility
" d3 \6 @" C, H2 t& Xreport n-values people [0.5]
' j! N* Z" g5 b4 H0 fend
5 w/ t: E: o( O# s0 i
5 Q2 [$ _" [& R: ~+ t/ ]1 v1 zto setup-plots
3 s; }: [* B' v4 J# S7 y
: t) o9 N. R$ O$ {  ^, Vset xmax 30
- |" w, x& D( d
6 B3 R0 V% a1 D. u/ u- u/ _! |
set ymax 1.0

- R0 u  O% m4 V; }; w' ?# ~# x; x& }* ]8 B
clear-all-plots

3 [7 a% p% c! Q) k
$ e/ R: D' ^  c  Hsetup-plot1
! k. W; ]4 f4 [9 p
4 ~# W3 X) _% C
setup-plot2

# `6 ~( O5 S4 S) C/ Q5 ]7 d) m  H1 B/ K6 v* a: K7 u
setup-plot3
) R5 h7 o% H& ?3 a6 C* E
end
* q' ]- Q2 }9 W- G8 e
& d$ T( O# |- j: N7 F;;run time procedures+ n) B  T7 ?- m8 }, C

4 R. F2 x& \# `to go
  f# d9 H; ]8 e5 K  ~* f6 i0 @" k% E
ask turtles [do-business]

1 ~" w# c- q( s, Q: J" z+ xend0 f0 v1 j" D2 J, L; N" ]  M
, Q! u7 Q9 P+ D0 x7 Y8 U
to do-business
: ?( z6 X9 j* I% v

) d) P4 P* W; [; E2 X. B# e( E* f% d9 a) \1 C- K
rt random 360

7 A, k" ?* P1 Z4 K
" q& V' l- K9 F3 I8 rfd 1

0 T8 X/ H$ _; @  p+ r( ^9 r* V0 e, ]7 p( ~
ifelse(other turtles-here != nobody)[

  y* `: U. a6 t8 b  s7 l$ `$ f
; u* M! Z+ N  R6 m" Eset customer one-of other turtles-here
5 q6 ?0 v8 f: B
* ~$ O; {" {; G% U/ k
;; set [customer] of customer myself

8 |, n. x, V6 _5 K4 D0 z
3 F5 l# |6 Q  ?1 ~) w1 k! Rset [trade-record-one] of self item (([who] of customer) - 1)1 z& i5 T5 T- A& W
[trade-record-all]of self6 _+ F3 T  K$ F0 c  P/ W
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

" M1 C; s# H' |  Z5 t
7 T; R6 N5 l! [( O( lset [trade-record-one] of customer item (([who] of self) - 1)8 U+ K$ P+ B! h# g2 h  S
[trade-record-all]of customer
% r1 Z. F# J9 w, k9 A: e; p

# g1 @8 Q' J, e. W& S0 P" sset [trade-record-one-len] of self length [trade-record-one] of self

9 K: L/ p: m& ^. P# V
  E( A0 U* z  q9 W& Q2 k! eset trade-record-current( list (timer) (random money-upper-limit))
7 u  q; g5 f8 M* B7 n

3 |5 Y. A% B4 w  t  x# e) @. ?ask self [do-trust]
) W  d0 O0 f7 x# j3 S/ |4 t" }/ s;;
先求ij的信任度7 p, O% x8 o4 B8 t- I3 C& l
! K; H, y1 ~( f% z  u3 v; q8 I# x  }
if ([trust-ok] of self)
" r9 W) L& {7 Y( s6 |# S! S;;
根据ij的信任度来决定是否与j进行交易[4 q& T9 N3 z: j' r6 N8 l
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself9 e: f+ M) ^) v  v9 v1 ?, \

; p$ A4 ?4 \3 x; q5 c[

$ H$ X" G$ V) I6 _; R) ]. a0 b. t& N* Q
7 E4 I# n( H! u; |0 [* ydo-trade

% c! @/ C$ E8 y$ ^: O. W: v/ K# k% T0 z/ l9 o5 H3 `
update-credibility-ijl

) j, a9 n, c& ]) A' g# H0 M9 M/ e) @; d6 l" R3 Y7 y9 ~3 _( E
update-credibility-list" \- _& y. [& H

/ e# P  L( I8 F8 ?$ k- F- X. o  h( l7 j7 O) {$ |; ?& D. ^
update-global-reputation-list

- L+ ?4 ~6 f' Z3 v" w, `' D2 l
6 F6 \" W- N! z; l9 lpoll-class

0 i! a0 e) o2 Y8 ^; _7 J
+ s( l5 Q# |, l7 rget-color

3 I4 h' k6 q8 j0 ]* F; m/ f
: t. n# s$ ]+ C]]
  K/ A' }4 D' l- Y
" g2 ?) [5 I1 l;;
如果所得的信任度满足条件,则进行交易
5 N6 T) G. L0 z. [3 B: E
; V. P8 I; i$ |! U[

/ d1 E7 T) y  o  s6 [( U& f( K' j6 o1 [0 u
rt random 360
( O; O* [- R" Y/ `$ J" x$ c

- R. _& }8 \2 |6 a; u- ufd 1
' J) \* J. ]9 r/ o6 p! h8 L

8 R( h4 P0 L$ x- P8 C]
% v1 a1 s$ r# R4 h

$ x/ S! @' P) A, |end
$ J$ f2 f! D4 n6 r
" g% G1 v. L% V7 S0 B
to do-trust
9 l! Q( i2 c  t$ E  ?1 }8 f0 J1 Jset trust-ok False
: b+ g( K1 F" Z" u) |# v
5 p& I% A: b5 W3 X( R
2 H) `$ A" O5 I8 @, x  m$ W0 i
let max-trade-times 06 p& h4 p/ q7 k  u8 P" p
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
2 \6 G. A4 W0 p( G. a0 A, M. L4 l( Alet max-trade-money 0
+ b6 M" W& ^0 y- f# Lforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
9 D3 k; {) N* R1 T2 tlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
/ ^  ]! X4 U3 E- S3 ]$ n2 i) h" ^" g7 V. T$ B$ [( c

3 i0 {/ o. j$ T9 gget-global-proportion
( `* L" ^: W1 w( l4 qlet trust-value+ X" z) R. d$ P9 r3 i* K
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)

' k  q+ w% v+ M$ d; D5 p: Bif(trust-value > trade-trust-value)
0 Q+ k0 r- m. o2 o7 w) \& ^- c[set trust-ok true]8 e) I. s2 }7 q) F, j
end
9 L8 O1 _3 ?# ?& b. q: k0 t; Q" u* y. `9 M2 }) {$ D1 [
to get-global-proportion
9 F  T2 G2 I2 q. O# Sifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
7 m9 M6 Z) u3 P2 `% R[set global-proportion 0]8 i4 k# g4 u  d
[let i 0
$ j/ I& F2 B7 n# P' w; h6 M: l2 mlet sum-money 0
2 y. u, s* G7 D4 ?/ J' Kwhile[ i < people]
  Y/ N  u1 t6 t6 g% {0 |[& m. S: t/ G3 Y7 o. V6 T, X0 ?/ Y
if( length (item i4 C& b; W* v' u0 K$ h7 ]3 w
[trade-record-all] of customer) > 3 )

+ @1 ~" p8 A0 Z- t' |- a! D[: }$ |( Q4 ]. W, W# u
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
. K; n; a3 M& j8 L; m/ u/ E4 V) ^]5 [# ^0 Y( E. ]* T3 G7 v# k
], ]! m8 D/ Q5 c3 u2 e7 V8 ~8 N9 d
let j 0
1 m, v! A2 n) C" {) Olet note 0. j1 @  S0 @9 m, G! M' w' |$ D
while[ j < people]% x- N* m; @* Y
[1 [$ y: F0 ?1 L' [; h9 `: T
if( length (item i
. q+ D* a' o$ D1 I0 A[trade-record-all] of customer) > 3 )

- `+ Y  r/ ^- h) Z4 X# m/ z, ~[
; i" [- T/ M% v. c# V6 tifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
+ X* y; [  q6 P' s$ O8 C2 r[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]# Z! B% O2 V1 w( `6 l% y# D
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]; L3 K) N' d- j9 `7 E% B) ]) Z0 b4 _1 x
]6 ]  O8 H: T$ B: J3 s! A
]
! v" x. g$ K: `" qset global-proportion note3 C( x5 ?6 u: Z  g7 N' S
]
3 ~) w. F7 W1 R: Xend
* @& c+ Z- }. ]5 v7 z0 [! ^( X3 g. u+ O$ V" r; n9 W. X
to do-trade
3 M$ f. B; Q- k2 S+ U( p;;
这个过程实际上是给双方作出评价的过程
$ E+ y; V5 ]; ?- _/ i6 |* ~+ d/ @set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
  N# G* E- r; v8 k! ~, S* n4 tset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价, S" \* f# ]! ]/ a
set trade-record-current lput(timer) trade-record-current
2 v4 O& Y* X0 x( i. l* \% A: V& n! \;;
评价时间$ _. g# b, N4 R' A8 p8 a
ask myself [
6 K- X9 L7 Z6 U  v- P4 Z* nupdate-local-reputation5 g! U3 T" h6 b( P3 n& ?% i& G5 |
set trade-record-current lput([local-reputation] of myself) trade-record-current
; t/ x" d3 h7 E. Z/ e]/ X: G, P+ x, _
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
% b6 a4 W8 g) \9 v9 `  ^;;
将此次交易的记录加入到trade-record-one
  r- f. o/ u( m5 Uset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)% s% U  u! @4 I- y- j3 V
let note (item 2 trade-record-current ). @0 p- }  K9 }3 u3 v8 Q( P
set trade-record-current
9 W0 y; I- W( T" K7 C7 c(replace-item 2 trade-record-current (item 3 trade-record-current))
' V; |1 u" \2 m) N/ a+ f
set trade-record-current
  a) ^  N, g" d# k: T; I(replace-item 3 trade-record-current note)/ l3 e# B" ~4 O. i$ g) A; d" a7 j. H" ~

4 x  Z4 T3 |3 Z$ f
4 I# P  |+ t9 D* c& A' b. q$ a
ask customer [
2 B. d5 c0 v+ N1 n- Supdate-local-reputation
# N& |" E4 g6 y! N+ D3 vset trade-record-current
! ^' y* I% L% @. I3 O. z3 U1 z(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
# B1 u( n- n) p0 K/ m+ y
]0 i# t# Z4 c( ^: n# K8 G- N  n
! X5 w$ Y+ O. }
+ K! N4 ^$ j# A- m3 s, Q
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
$ a/ D& k5 ?: X5 [

* k" X7 D# t9 e. [* {1 gset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
/ r7 v9 V$ A6 r* L2 g( g+ _;;
将此次交易的记录加入到customertrade-record-all
) J3 ~+ }2 ?6 V. Q) _end; u3 _4 q; y8 \3 x7 R

8 [! s% S4 E2 t; c  |to update-local-reputation
$ K& O8 h/ S2 U6 j7 J" p& Kset [trade-record-one-len] of myself length [trade-record-one] of myself
  I/ A8 D  ~& c# o( P: ?- b. s6 x& E# A' e% V" |6 U

/ j; \4 [2 ]. t  A: E% D: E;;if [trade-record-one-len] of myself > 3
$ X5 E( e. C7 t2 _+ c
update-neighbor-total$ e+ t; D! K& h1 O6 r9 V
;;
更新邻居节点的数目,在此进行, H; l5 r) y$ w: ^6 l
let i 3
# Y$ \* ?, h' ?8 {& m  `3 glet sum-time 0
+ m* W% @5 \* c2 V' Kwhile[i < [trade-record-one-len] of myself]: O. N3 X0 P; i5 D/ K* l: I  w* T
[* b+ s/ B9 |7 m; q1 c0 b7 Q
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )- o! }8 o# t- x
set i
/ v" v# F  \7 C( k( f3 h; Y( i + 1)

* e' i2 ^- }* N: D. N3 ~+ S]
6 F9 m3 N# a- {let j 3; r3 x% n% N! ^' C: w2 ~
let sum-money 0! u% C! }* W. E% I$ Y: t
while[j < [trade-record-one-len] of myself]
% L: {6 g( y2 j; d# b[
9 m( |0 J3 i; {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. }1 J% [; G: dset j
! L% u* m, V3 I- b: k2 R7 ^/ ?( a( j + 1)
; ^4 V( N" ^8 |- m( M- C
]1 ]+ P1 k# E( e/ m7 a- e
let k 3
: c+ _2 g9 J6 N% n: d1 `let power 0
& r4 F$ a. B* N4 klet local 01 m( f# [8 l. Q& S3 y, @# P
while [k <[trade-record-one-len] of myself]' i6 R+ V& n2 R% W1 J6 a! ^% e
[
  S9 ~1 ^5 k% y( ?8 O. M" g9 zset 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)
- o2 K: ^0 Z/ J% Kset k (k + 1)
4 T* S4 Y/ B3 O]) u0 f& E4 B8 K+ _
set [local-reputation] of myself (local), [. l7 C5 X- Y+ [
end( Q: r  v2 {3 q; ?. B9 a
. }. G- K0 W( X3 ^
to update-neighbor-total6 V8 G7 B& K0 l8 ]
2 x; u! y( O% V# i; U3 M2 _* M
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
1 v$ z( G9 o( |  Y- j" T
) N/ c1 N! J9 m0 ?# j% m  P, m+ X
' ?/ ^2 @. N" K/ N0 U- e. }8 b
end
' x" G  |6 M3 P- n, L5 S" l& |4 W' ?; ?/ h
to update-credibility-ijl
& Z- W) I) E. {* F
3 f, w% z7 @! ?. \3 y6 w( f% G6 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。
* Z' Q( P, U8 T, Klet l 0
! s9 F0 z* e5 q  Q+ u& c: j/ Fwhile[ l < people ]3 X( O% {' v% |* c7 o$ ]4 D: z
;;
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( h$ P1 ?7 a! H% w: w) R
[
3 m+ L$ Z* A" Z0 d  J% Vlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)3 S' W& o. G8 L8 `. K. n* l
if (trade-record-one-j-l-len > 3)
# L/ q! d! w. X0 Q! @* 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; x( ^1 T& Z+ A7 V& r* \8 P
let i 3
5 X& m* P' Z- ]let sum-time 0
2 v1 S+ J  N/ u% _9 E9 f; }while[i < trade-record-one-len]
8 _4 x! f! B# o# ^2 u# N1 Y8 H[
! p# G) `4 f* \. k0 ?set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )- @$ _6 ^  N7 \6 d* n( V: _$ i: u: j
set i
; j6 c3 {$ z. x( i + 1)
: W/ \5 G6 f4 G3 F
]
0 H# A; r! p8 ilet credibility-i-j-l 0
4 ?6 u; J) b! b- v& L# I;;i
评价(jjl的评价)
! [( L  y8 }( t* M- i6 [1 a+ X- clet j 3* K; S/ R* s! i" e4 u% ~1 N: f
let k 4
8 M/ P( X4 C! ywhile[j < trade-record-one-len]3 R. M- B1 s: t5 q5 ~1 p
[
" t0 z6 {8 c; S% I3 t3 P+ y# [- pwhile [((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. @( x$ U' f7 a( u" h# k4 D
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)
. w6 \- y% ^( P. j% y% A/ |set j7 C, e1 `  C# }  Y. t
( j + 1)
! K" ^, n2 G% g& S* _
]
( v, i) l5 G! R- Qset [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
9 Y+ c8 [) P% i! j* O
. }  ^( H0 K1 t; a4 h9 _! r
* R% }1 ~& C( {- G" }6 E0 U* r
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
8 B4 o/ _0 \( c9 `8 i;;
及时更新il的评价质量的评价. B0 x" q+ G7 o1 p4 }% e- E1 d# e' ^
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]8 C  F* }8 U( K& ]/ s1 |* G
set l (l + 1)7 ?5 b2 j$ y% ~" w3 ]. X# O
]
4 n7 K9 b+ o9 E+ l' ^* X1 [end/ z3 `3 C: }4 y6 s3 ]

7 K6 D% a' s0 B  wto update-credibility-list
( B8 @) P" h# |/ Wlet i 01 s- B; k# C& h% w
while[i < people]/ k4 e4 `: M& w  I/ y; n
[+ o6 |* k6 e6 f) t. J
let j 08 a- d9 A! c$ u( M# A
let note 0
! p. K) I+ u" Dlet k 0
- `5 }: s! z. f/ o2 x;;
计作出过评价的邻居节点的数目7 S( a6 @9 s3 e8 h
while[j < people]% b" I/ G. c$ D& a- S, ^
[
& ^4 ?8 x$ H1 R/ z3 Yif (item j( [credibility] of turtle (i + 1)) != -1)
# Z- O" w* X0 \# w;;
判断是否给本turtle的评价质量做出过评价的节点
7 S/ `; U8 z$ h; H+ |! Z[set note (note + item j ([credibility]of turtle (i + 1))); Q+ U3 b/ P" C' F. d+ R
;;*(exp (-(people - 2)))/(people - 2))]

2 j3 \+ Q( U& D' w4 m( I: _+ Hset k (k + 1)9 o' k. ?6 T$ _' U
]* r4 M1 u. H7 H7 S, G9 ~
set j (j + 1)
9 n3 A3 n+ n# o7 E9 t1 ]]
6 l4 b, K! v1 Y' t$ r5 i* G% w# i' @set note (note *(exp (- (1 / k)))/ k)
6 t6 u, W4 X" i& K! b9 p' ^set credibility-list (replace-item i credibility-list note)6 b5 h1 E: G2 l# d( u
set i (i + 1)# E8 z/ ]2 C: n1 i$ A$ g
]
0 \/ l# k: |6 q$ Z$ t6 k' Oend
" N) I6 ~4 D1 X( a0 r5 b4 l4 X, V; f# h
to update-global-reputation-list
; z/ F/ H  t6 Z/ `" D4 wlet j 0
" g6 b2 I- ]- c' k3 S: P4 mwhile[j < people]* V' N# O! D* a2 S- n
[/ y% A9 F1 N4 h2 Z( j( p
let new 09 |  W0 |! r: {* x5 U6 c' J
;;
暂存新的一个全局声誉- [; [1 d! s$ }6 u: s5 _
let i 0
2 Z! B9 [" Y9 z  B1 ulet sum-money 0. n5 h4 Y4 S1 }) G: i. G7 x! f9 Y
let credibility-money 0
) ~3 L' I4 Y( O, twhile [i < people]
& D$ [5 r2 o: _: K- ~[
1 N& X& |" ?9 e; O, `set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))3 ]! C1 E& `4 U/ s6 X
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
( O( H0 d2 `% e9 q7 e- P3 Bset i (i + 1)
$ J- _5 i) d  I]! N' F/ i3 b0 ], k& L# [3 l, P
let k 0
8 D2 w! N1 w7 {% X! ^" [9 E/ x2 }let new1 0, c$ B5 a' R1 F4 |: |
while [k < people]
2 _' b. B/ z: B% ?( I[1 ]. k& U4 i) b! I: g0 X0 V
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
8 ?# x, E2 M5 ]2 C! s, f+ f7 F# iset k (k + 1)
. D0 i: {6 B" o2 \% r# q1 v]! W8 u" A4 N; a0 N; m6 v( C
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) # s, W9 p. q3 U1 q* z$ B
set global-reputation-list (replace-item j global-reputation-list new)
! {! x: V! `# G& z$ q4 [set j (j + 1), H: |: a6 ]; J! i
]
* s4 H# K$ K9 W+ gend
) C1 U! I+ f, `* d3 T
1 T$ q+ m. {1 F' d0 B% P& z, a, r, T& z# F% n( U
( x. n- c' y" E1 T; j
to get-color
: @1 l( \! X# n
9 [% I" L3 @' F9 C1 G. kset color blue
( v* J8 `. K& e4 b% T" l
end
4 \" ^  m4 C& L' \# f
7 j4 @5 X8 w- L2 [to poll-class
# Q) _8 n1 \/ d0 Eend( n0 ^. U& E" c$ F
# @5 u* T; j; w" y/ l$ u
to setup-plot1
- b( \! z2 c+ E# Q& O
# {6 K& L! @4 d8 l4 a; w8 l, M6 ^0 }5 aset-current-plot "Trends-of-Local-reputation"
; W$ p. ^' X) F! z
+ E5 I; V; q: X, N$ l8 C& `0 y
set-plot-x-range 0 xmax

* V3 h0 v( x+ ]! i7 A9 T  @5 t
# @5 F; V( r3 f. z" Fset-plot-y-range 0.0 ymax
0 ?0 B3 n/ d+ s
end
0 ], {. l" j9 O/ S7 F0 e" ]+ U" U' ], b& i4 t
to setup-plot2
; n( Q, o* J' U- d5 Q2 k" c5 v
# T3 v' O( W( oset-current-plot "Trends-of-global-reputation"
4 Q1 u/ x  p7 L: Q' c$ p- l# q& k

! R5 _9 i# [( k$ \( v! E% rset-plot-x-range 0 xmax
. F4 n! o$ @0 q4 k8 {, ?
7 j4 c% N' n* }; K
set-plot-y-range 0.0 ymax

. J: m" T. ^* ]  Z; Oend$ d0 s4 D1 Q/ C1 M! \
& [, e3 h. Y  W8 T
to setup-plot3
7 q+ P8 n) t( \6 K: d5 {$ Z! m3 W3 ]- b# Z
set-current-plot "Trends-of-credibility"

9 x' b1 B" P. a5 J! c
9 K7 A# r/ T9 r4 ?' N1 Oset-plot-x-range 0 xmax
. W4 D/ i4 {, g9 ~
5 H& A4 Z3 m  S
set-plot-y-range 0.0 ymax

% G* M9 m6 ?5 p1 }% m7 b+ K  n/ ?end: I1 Q7 j& p- i& I

& |6 J8 H7 ^6 {, y% z9 z9 pto do-plots% A! {8 @0 ]4 H! J
set-current-plot "Trends-of-Local-reputation"
) n- t% F+ c. K; b# |' nset-current-plot-pen "Honest service"
! W- _$ B& C! O' s3 send
; a! b- o; ?* Y6 M' w
2 J3 A" A. w6 F7 f# x. Z[ 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.
; ]1 M) q9 j/ `0 o* Y
( ]' `: E& C. f; E  c; ?- b( G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, 2026-3-5 20:46 , Processed in 0.018612 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