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: 15234|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:) c- |; e/ ^. v$ Z' i
to do-business $ F$ P) l% T' a. N
rt random 360
7 z: O$ c) M& z7 [% Y" w fd 1
4 l) J' J5 Q/ e4 K& t; j9 i ifelse(other turtles-here != nobody)[
# ~5 \$ D# ^7 Y3 [: B   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.
( Z; T% g2 x/ N. G- E# h   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    7 e# h( v3 A7 l+ A  p
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
0 l9 y% k" }( G8 _   set [trade-record-one-len] of self length [trade-record-one] of self
$ H! g6 k* f5 |   set trade-record-current( list (timer) (random money-upper-limit))
2 V4 V0 M9 o! U7 \/ b3 W% G( N) X  a; M/ i
问题的提示如下:# a" Y& o+ G: y8 K3 f
0 d/ @1 P# P  u8 R" I
error while turtle 50 running OF in procedure DO-BUSINESS& g; N- r; C' n
  called by procedure GO
- X( x9 F9 O" a9 L+ tOF expected input to be a turtle agentset or turtle but got NOBODY instead., B' i8 F: v- Z
(halted running of go)
& k/ ]. N9 |+ F0 E- m. Q" K. A  A/ u5 K
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~~5 v6 h1 y: e/ p. e9 }
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
+ K" E$ a4 c' F% u8 F+ h/ R0 uglobals[5 L1 ?3 |- u. t2 v$ @+ z( T  H! ?
xmax
  }# Z- r7 ?: l% kymax8 b" z1 e3 ~/ }
global-reputation-list
8 o& g( V4 A2 L% {4 m) l) B2 \6 i/ `9 g# z3 S& s' C6 M
;;
每一个turtle的全局声誉都存在此LIST
; u9 ~0 }" \8 h, L: ecredibility-list
, m9 x6 b( `$ K% Y* v# Q' n;;
每一个turtle的评价可信度* {- D2 N3 c/ H  W4 F& P" D
honest-service; a, x8 ]  ]8 L7 l0 i5 J1 G! P: l
unhonest-service3 b! [9 Q3 `, h* T& p( z% E# T
oscillation
0 ]5 J1 i9 `6 q; D* n6 zrand-dynamic
& l/ k' U( T3 G+ T# V]" h# ~3 \( ^/ j4 w( L

7 Y& {; u  n8 O* wturtles-own[
# P0 ?! O/ [$ t/ u7 O2 Ttrade-record-all- y, X2 M  {$ Z% ?( @: S
;;a list of lists,
trade-record-one组成
, o, ~+ l3 Y0 htrade-record-one9 L! X& T' u5 I/ ^
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
4 K5 g& o: Q( u
8 `! v8 N' U( |: Z0 z# _9 q) U" M" C: m;;[
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]]
8 W. [9 F3 D; l: q- }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]
  M2 W' C6 x" ?5 S9 f& bcredibility-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
, c) X. P" ]3 Y( |: a0 _  C3 ^neighbor-total
% V/ G6 Z' E) Z;;
记录该turtle的邻居节点的数目
, g7 p. a4 y9 A3 w' B; J( J/ w7 M& itrade-time
$ ?7 k% y" ?9 E/ O' u;;
当前发生交易的turtle的交易时间$ }1 C. y6 ^  X) k4 n. G
appraise-give
- d% J8 O! H; q* Z2 I;;
当前发生交易时给出的评价
" K% Q  B. F6 M6 _9 Lappraise-receive
+ V. c' X! V8 O( c) {; U" Y;;
当前发生交易时收到的评价
0 E/ D& J- T3 ]% Y; X1 `+ Fappraise-time
% s3 Q. z+ }5 `4 i2 s;;
当前发生交易时的评价时间" q! y  i0 n9 z9 o! k/ u* G
local-reputation-now;;此次交易后相对于对方turtle的局部声誉, `- e" P" }+ q& p6 N* n
trade-times-total
' }1 u  u: M( W6 m;;
与当前turtle的交易总次数
; i- H9 V- L" U7 Z. Dtrade-money-total! k8 c' U7 F# ?& G, X% m
;;
与当前turtle的交易总金额2 ?& h& ^9 E' d9 B; h- C3 m/ o
local-reputation. M/ D, ~6 m, b0 p2 d- f1 b
global-reputation
% ?8 N. j; \) k% _4 Pcredibility
9 P/ m! c% O5 ];;
评价可信度,每次交易后都需要更新
6 I, R  h$ `% y9 m  y) X5 ycredibility-all2 X( J+ K0 G5 w- R
;;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7 }' h1 t% M* ?# n! u! h3 N! n

( V+ O; A2 |& w: p6 q;;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
' y5 O  \+ ]. icredibility-one
$ Y# Z( s# X, t6 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people7 O2 N9 b: a, b' n! r- g; Q
global-proportion+ c, x* e5 L7 n2 ?, @, J
customer7 {" u( J* C8 Y* {7 q1 C
customer-no
  Z0 ^. o$ r( V( ^# B7 v2 n- xtrust-ok8 J% S* b* s; D& w3 x) M* H# u
trade-record-one-len;;trade-record-one的长度+ R$ v& j7 f. m6 l
]6 ^) N. A8 U# V6 S
7 |) k# R% _! x7 T7 L; K$ W- u
;;setup procedure
/ I! ^" q  F' I
. p, ]  ^+ R2 k( }! Z. N1 L3 [$ Cto setup3 r9 j4 ?' l# e  X, {5 C

: I( }+ h0 w* z8 R, bca
( w7 L, @. S5 Y' y
% {3 r; T- Z$ e* m2 r
initialize-settings
  w- _5 R  Q/ |0 y' c1 O
: A2 ^3 Z; R3 T$ B3 N; B: K2 s
crt people [setup-turtles]
9 o( z4 h6 b& e8 m

) c3 l8 d, g( c- a$ E6 S' I+ nreset-timer

$ M+ a% ^$ I$ I6 B0 ]4 g  |9 H( d' q! ~5 ?
poll-class

( `' a3 N9 e8 e7 D/ i; H2 J
5 E6 u$ K1 P4 V/ I3 K, V- o. Usetup-plots

9 Z6 [" m! Y, J# I* y
5 ?- [0 ?8 R5 l0 c/ \" odo-plots
) p( ^. p5 x2 z
end" E" U8 S, G" Q# A% R5 t1 K
$ e9 k* t% C' Y' \2 J% @; w
to initialize-settings
9 I0 T6 N- w1 I+ E7 q$ Z% z- d- c8 A1 k' \2 U  K
set global-reputation-list []

- t6 _; o' ]/ T' A  R) Q3 z: H" L' Y5 Z3 J) e8 V- O' M
set credibility-list n-values people [0.5]
$ @  [8 V; j! ^! a

3 P8 h6 e, N- S& o: fset honest-service 0
4 ]7 |/ D6 Z4 O( r4 V. g
. A$ C. x0 X& j7 a- |
set unhonest-service 0
0 Z) `; v' c- }' |% s8 Z: \
+ a/ o( E) Z; T; c& L% W
set oscillation 0

0 T! E# k' w' B  t! y" n6 b" U/ _0 B& a  u
set rand-dynamic 0
' y& X: D" a6 k- R6 W
end1 A3 V& q3 K' P9 Q

/ y: M( f8 y! v2 k, Ato setup-turtles 5 W. B0 y0 J0 ?* ^
set shape "person"  @/ \2 F, Z, z
setxy random-xcor random-ycor: d( n# g* i' p
set trade-record-one []) c+ ^/ B( _$ B, [2 }
5 y; Q& F) [( ^1 e5 d
set trade-record-all n-values people [(list (? + 1) 0 0)]
/ z* H" ^2 |. `% J8 c4 [9 e
; w, z' t+ I: h1 C7 k
set trade-record-current []
& K4 Z/ _4 {0 [  I; D! c5 ^. [set credibility-receive []( D4 D' f. S9 w( }- D4 `  R3 s
set local-reputation 0.5, J( g- W$ _  B% Z& i  b5 M4 C0 a% Q( |
set neighbor-total 0
5 `" ^+ l( |9 f& ~7 x+ B! jset trade-times-total 0
) u1 g- \0 o# S0 @2 {5 Xset trade-money-total 0! ?6 A( h1 }4 X& O" O& R
set customer nobody
% a# d0 P8 {9 H% f. i2 Oset credibility-all n-values people [creat-credibility]
. [# `* |* P3 x+ K8 P. m4 A  Uset credibility n-values people [-1]% C8 P, C! o4 ?, z3 l5 n! H2 ?
get-color: G& y5 g2 W7 t3 A7 i' _) V
1 u' [$ p+ x4 H( d
end. t- p5 x: ^- m1 Z) t$ @2 C8 Z

4 m4 l2 J$ @! Y& H( s2 }to-report creat-credibility2 y1 l3 S/ O9 y2 b5 z- o
report n-values people [0.5]
% L0 D# l' @' k+ X8 Fend
+ B% X5 r3 ]. A* t+ g$ P
; Y9 ]& |' i  m$ B: |to setup-plots* s: X  b) k9 ~) |$ b$ m
$ k+ ]- J5 b, ^7 M
set xmax 30
' G6 {% ~! v9 }; Q4 y/ N: u9 y. A
" y- l" T- l- @1 T9 U
set ymax 1.0

4 D* W. O. H; y1 q  T8 [" N* z. F) c& r' P, V: K
clear-all-plots
. A/ i4 G# H& L. p

8 i5 W: c6 `5 Z  Wsetup-plot1
( F! W+ p. F6 ^2 ~
; c) \* r& G! N' H. f) X
setup-plot2

- l4 U! B# I6 k0 U  \2 Z  l" i
# Y( s8 c1 \( v3 Lsetup-plot3
6 n8 @# `9 V% {0 @# q* S
end# f, |; x  q6 M

& y' s6 `% D: v& z;;run time procedures$ m) F9 h6 h1 @$ v. B& {

- t* m" Z- Y. m) a6 E% N9 J! rto go
% i8 a" q% i3 g" z' U/ F( `
. ^9 R/ S5 z% `  G+ Pask turtles [do-business]
7 r5 y  k" g2 k; k/ ?1 N
end
9 M6 c; d6 F+ t/ W0 r. |0 K* K  n& r$ _; S0 [, V- P+ g
to do-business
- K, y; [, x& z8 J

2 W' L1 `$ Y9 `2 H1 n/ m. R6 Q$ p0 n) H3 M& Z9 Q: F8 ^/ _
rt random 360

- a5 r. k2 s3 R& d5 J+ E* A& y. k1 w" L$ O
fd 1

3 K2 \* B) E& {5 _6 v9 @( E0 r9 i- a/ |+ d# N+ v8 U3 H9 A; a
ifelse(other turtles-here != nobody)[
( ]$ X( q$ M4 G* ]3 n9 j
* F# R4 [! Z% z5 q8 ]
set customer one-of other turtles-here

# m1 A- t2 G; G. q2 E3 u0 ^& c$ C1 K7 _/ G: v0 P  ^4 I
;; set [customer] of customer myself

4 D; ^1 S2 |' q/ e7 X% {; R0 v; e+ q4 p) D
set [trade-record-one] of self item (([who] of customer) - 1)$ [! [# a3 A1 z& G; Q" D) S' m
[trade-record-all]of self
9 X/ U( s3 H1 C; H7 d6 M* e;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

7 T  N1 J9 S5 W: [. M  E! _8 ~) \
0 T- |  s# i, E: F- w0 [set [trade-record-one] of customer item (([who] of self) - 1)
2 N6 s( Z. X5 W[trade-record-all]of customer
. b5 Y2 Z3 y! |# A

) D1 H( I6 h, q+ r4 Z: {) p+ @set [trade-record-one-len] of self length [trade-record-one] of self
, j/ B# k' H; R, g
4 J* @4 T2 w2 |. b3 g8 b
set trade-record-current( list (timer) (random money-upper-limit))

# X/ Y( U& q/ y7 ~5 D1 |. S
4 @0 z0 c* ^, _, ]( ^/ |; v+ Bask self [do-trust]
, c# o* h( W# I1 j( v  |;;
先求ij的信任度
5 J" k1 D7 \( X) p" J6 l
" Z3 B6 L* r! v5 u6 J( X5 r+ e# x( Fif ([trust-ok] of self)
5 _% B% P$ \8 x/ V0 L- Q, g;;
根据ij的信任度来决定是否与j进行交易[
* y- a' q& B+ ~; oask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself0 R, L5 @* d3 \9 Y# z8 Q; |9 J

6 ?& K1 j9 Y9 W7 y% f# t; p% E[

' t- ?* _  k' E& c. l  b' j$ w6 u4 F- U# E
do-trade
1 ~& A' O$ {" t( g
& V6 y' [& D% O' K* d1 J
update-credibility-ijl

! [7 m* @$ M+ q" i# q2 P- b; _
& {" y1 m( p5 l0 G  [/ m6 Jupdate-credibility-list& \8 k/ L$ ~6 f' a0 N1 n
/ a6 k4 e* e/ c& e0 v0 R
7 G) b( R0 c% ^4 H
update-global-reputation-list
' Z8 G/ f3 i/ |# t% L* w7 S4 S
1 D2 ^; }* G/ E  h' g& R
poll-class
9 p; i3 N9 o8 k' z8 P6 q5 r" `
; |: U) }; f! F: R; i6 u: E
get-color

+ I5 N" c: t* ?. m. Y* ^# p, V' j9 i. i* K( R7 ~2 Q
]]4 b# }* p3 i- P

- e$ B2 Q# O) B9 j6 A+ ~0 r9 ~;;
如果所得的信任度满足条件,则进行交易7 W1 b) ~- [7 a7 r5 l/ R* ?9 L
% Q5 X3 t% P- m  W. g: i
[

; V! c. ~/ F' y0 X3 k
! |7 y8 n; s; p* B& W- wrt random 360
- _* B. [4 @4 T% ~) X

( e7 |# x- g: T5 _fd 1

! D) r9 }, n9 o! _; e) T$ A  A2 p/ K5 ~' T) N% `
]

+ `' \/ e& Q/ E. L
8 a. d  Y: [; x7 Uend

0 U% u- j. u1 a; S) u& v: k$ I$ ]( O! L6 ~* k8 |# T; N
to do-trust $ |& ?; {" S" a5 J8 O2 H
set trust-ok False0 O- O- e% w7 \+ T; ^7 S
' o. Y" o; B! R; S2 Z

* V2 @  F, p* A  }, g7 |$ q! m. c, ulet max-trade-times 0+ ^8 ~8 f# O: T8 r$ `4 B0 }
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]/ S7 F/ x7 c+ F9 K
let max-trade-money 0
6 O3 {2 K: E3 y: O+ R4 aforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
% b  u7 H; C$ u& m" rlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
& l- n( X& O  s
" Y; ]. e1 ~7 A& W9 t( W& [5 Q

$ I$ @9 D+ H9 C* w9 H/ L9 Eget-global-proportion
1 U( ~5 v6 k$ n1 n7 i) C+ Flet trust-value
, H( ^; j% ]+ @/ \& V0 Clocal-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 U: x: Q$ F* T4 nif(trust-value > trade-trust-value)) L9 [  v; H8 X+ x( d7 z3 p% W
[set trust-ok true]
4 b' e: O' \9 X( Wend3 Q# b3 N7 L( U* h2 u3 u

3 I0 Z; X: d. d' Y& K% Gto get-global-proportion
; g; p# s. U; l4 g# i# ]" v  Fifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
9 N5 S0 M6 t$ T! c1 T+ G: U[set global-proportion 0]
, R) z0 O6 g1 O$ V% S9 d" X1 N* c% x# q[let i 0
+ k, \; G* h) R# [: R0 R# Blet sum-money 0
8 J0 ?4 u1 i# B5 r! Qwhile[ i < people]8 _2 _8 J9 O$ W: \
[
4 D$ T! t. ~1 Fif( length (item i
' k# j& e9 T- G[trade-record-all] of customer) > 3 )
. Y0 v! s7 }! k! A3 C8 }
[
0 b/ n; C5 N+ P3 l4 mset sum-money (sum-money + item 2(item i [trade-record-all] of myself))( r8 B& j5 D7 a, u2 v% b/ u+ z8 S
]1 x+ C8 \5 \+ k0 ]0 B* h& B
]
) D: J0 g# n) i3 S/ ?/ W& F/ zlet j 0
8 I9 ?0 u" r/ `3 w1 K3 @" [6 |& mlet note 0
5 I, N/ r" Y0 |9 j6 q9 Gwhile[ j < people]
# O& y# R* l  O3 j& ][
: d9 w; S  q) r' sif( length (item i
! d9 @  i% ^1 I! M[trade-record-all] of customer) > 3 )

% C  Y7 A9 i' A" c* A. f[7 l; l% q2 w. q8 q/ q
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
6 T/ O- |- `) }2 H8 g6 t[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]1 d2 Q  p0 X2 G! o6 S
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
' W/ G" F! M; L* S' R' n]' S6 o: f( ]5 j6 t! H' x
]) V2 p. o. c3 M
set global-proportion note
6 _) Z0 t8 R- t# u]  ]% h+ J, @' m5 G3 w
end
' V* o+ V: b" x8 p9 }! c, F# h$ I( C  I. C# ^5 Q
to do-trade
9 S* c9 j7 y4 [- l;;
这个过程实际上是给双方作出评价的过程
+ Q$ Q" z% z" ?6 K2 F  Gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
- W8 K1 f/ f. A2 Z! Z8 ~4 v# N/ ~) ?set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
) I1 y) q1 _  @2 [set trade-record-current lput(timer) trade-record-current4 ?( X2 V' y4 g& g7 ~# @6 @
;;
评价时间1 n+ W% M# _' @/ v$ r9 |/ x
ask myself [
- C( w" l) Z5 Z" rupdate-local-reputation
4 d0 ~2 V+ S3 C3 c" {set trade-record-current lput([local-reputation] of myself) trade-record-current) D+ W0 g: v% _+ i6 k( F
]
! \. `3 l6 F1 `9 ?6 Iset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
8 U9 R! }' n8 T4 b$ `' U;;
将此次交易的记录加入到trade-record-one
7 s8 w8 k% C# n6 J& k- R" iset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)$ ^2 b' }! ~5 h, K2 H0 ?- ^
let note (item 2 trade-record-current ): ~' f, _! }6 ^
set trade-record-current
2 h7 F2 W+ _: n; ?5 y(replace-item 2 trade-record-current (item 3 trade-record-current))
) E0 s8 ]- }- ?
set trade-record-current
% R3 D3 P6 e8 O(replace-item 3 trade-record-current note)
5 q6 `+ U6 T; I6 i, Y& S# M0 k: X/ a$ }  i8 z8 \. {7 v# P' V2 j
8 A) |" h* P3 t% E
ask customer [- e. e  x4 Y  d, S! i4 X
update-local-reputation! Y# t' T6 |2 S0 r) Y' L9 m; d1 [
set trade-record-current: K7 a7 z# ~0 X9 t$ ~8 F- k
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
* \  t# c' y% m/ C: t0 l
]' v8 R- [2 Z5 Q

4 V2 |/ R9 K& D9 _6 X! N7 K
. ^/ c1 ^7 j  h8 x( f! x9 n+ O5 h
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer9 T" U& n4 c: G+ i- L. z
4 H! K3 Q  J  N0 f1 d
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))8 p% Y* A% X2 t0 |( w. t; `4 [
;;
将此次交易的记录加入到customertrade-record-all
8 m  W% H; P1 V5 Q$ Oend
( Q1 O# x3 {7 Y" v5 [: U4 u* B7 b' r* K
to update-local-reputation
( w0 j  ~1 |0 Y! Bset [trade-record-one-len] of myself length [trade-record-one] of myself7 d! h, k& [" }; _8 r5 R' t
1 ~" Z" S$ e& h. I0 V

, V- Q0 E' y8 A. E2 y! H  ~;;if [trade-record-one-len] of myself > 3
/ [' n2 f/ w$ Q' F8 v# f1 f2 d
update-neighbor-total
3 {( E# [' z# q+ Z6 a;;
更新邻居节点的数目,在此进行
! W4 F& v8 J; {5 l4 q& R* d$ S$ clet i 3( k/ F, o0 Q8 z; Q2 o+ R7 l
let sum-time 0' G. q0 y- r, Z- B/ O1 J1 ^1 s
while[i < [trade-record-one-len] of myself]5 O$ y: R% n1 x8 ^" D
[$ k2 l/ V' c! j. I" [
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )5 ?% d+ ?# u  X1 Q3 T
set i, t! _0 b: [1 S9 n
( i + 1)

# G( i6 q- C$ j+ w/ v]
9 ?5 V8 Y" v$ T4 clet j 3
6 q3 W9 |6 N! w9 `: W: Glet sum-money 0
6 G# N# T( _# U7 m6 s7 C/ |while[j < [trade-record-one-len] of myself]
( w7 p- L0 ~  A1 l  f[( z7 L. k8 i6 C1 M7 J
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)/ L( X5 ^- R/ L* D
set j$ `+ y9 ]4 q- W9 g/ S  Q# {
( j + 1)
% z2 Y" Y: W8 F2 S  {% O
]$ D6 M# a- s3 Y: R( |) E
let k 3
9 f0 E7 s/ r- Z# I1 Nlet power 0# I% n1 @  J4 ^2 p
let local 0
9 q1 n- ~% f$ V7 xwhile [k <[trade-record-one-len] of myself]
8 y3 x! m/ t0 Q* G; W1 ^[6 M# a5 H) n: p/ e9 s, ]4 n( M
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) - z! q2 `' r/ ^' ^3 u6 {
set k (k + 1)* Q5 y6 a" Y( i/ Z
]
9 |! V, x7 q. j6 f. |3 fset [local-reputation] of myself (local)* R, m2 I. R9 t; @# S7 M+ b- T
end
% a& h/ h/ x* Q( I1 u
: L: i6 Y9 I$ O+ sto update-neighbor-total
% E% E" U( Y; \( x; h- `9 r) f7 u& I, W, K4 j$ W8 d
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]8 y6 C& w' E/ h
: N: D+ y" ?( U7 @7 R# ~3 W
0 |& _7 _$ g  |0 |
end
8 ~1 S* I  a9 W& A5 y* t- T% u9 I1 P+ x7 B! E
to update-credibility-ijl
% a: B' g5 y: _9 e- S8 D/ o& L4 ^+ |
;;
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。
/ I4 l3 F. B1 k3 p/ H  v, Mlet l 0* T0 O8 D  Z! f; Z
while[ l < people ]0 e7 m* A: G! I; m/ P$ }2 r" I
;;
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- T& K9 f* S* |
[; Z8 \0 L% C( j) x7 R
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)" \: z3 c" j7 Q  q9 y; w& k* T
if (trade-record-one-j-l-len > 3)+ o$ m! l3 P, U7 t
[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 z8 F; |# e6 d* D' Zlet i 3
: K$ Q  F  R2 y+ y& K$ blet sum-time 0
6 O5 N1 s$ j! q7 J! b  `while[i < trade-record-one-len]3 t3 w7 A; f& I- \2 J9 Z
[) V& \( b2 F, u- Z+ D! c5 h( f2 s
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ), {+ d* X. x% R2 O' I
set i' \! \* l4 a5 B
( i + 1)

$ d% t3 N+ }- z+ U7 Y% M8 Q]# L& t$ y  O+ F. B0 Z' M
let credibility-i-j-l 0
' }4 N! O; V4 n, F( F/ F;;i
评价(jjl的评价)* S! j# Y3 h9 g- v" H
let j 3
; M2 }7 [9 p2 e/ Y$ K$ ilet k 4
6 F( H0 [1 e) b, cwhile[j < trade-record-one-len]
$ m! w) h/ h( S4 q[4 T% C' L* U. `9 b7 ^( \
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
  ?# ~8 @! [8 G9 _2 Y) H. 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)7 S" u$ ?: R7 e7 ^  H3 [
set j9 O7 |# d) r. }8 {1 ?- e& V9 V
( j + 1)

' o% l7 b; Q' f! P]
3 c& g4 |% `5 h7 uset [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 ?/ |0 S, M5 p
! A! F) _$ {% c8 ]8 C' B
2 `( Z: P  Z1 ?7 N2 o" d0 ~
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
" y; X: ^, t( d. G7 I( w+ W& S;;
及时更新il的评价质量的评价/ Y. L( y- ~- ^( M7 O
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
0 q' R9 u6 S7 A' o8 aset l (l + 1)" V1 Q. S9 Z" v, \! ?$ N) k  _
]6 E. E& `1 L0 b" H4 y" }9 A  T
end
9 `0 j5 z- }  T& x
( j  v- [5 W+ L) b: W! p4 c2 U6 Y& v6 p, yto update-credibility-list3 G* R1 V, t: Y, q8 w6 d
let i 0
0 \/ Z: d; Q$ i9 x: M! F5 Cwhile[i < people]
: y1 N+ Z, f1 P3 v! Z: P# ]$ M0 m[
0 P( c0 U. o" c- Llet j 0' n& G9 d. |! X! Q, ?% _+ h, i
let note 0$ w5 V; D& m' ~  H; _* B8 t! G
let k 0
, c6 f! \; Z2 V;;
计作出过评价的邻居节点的数目
1 b/ z) u3 V# S9 d( e7 \/ P# Hwhile[j < people]) @9 @( K) R7 q3 \' \+ m6 U( h* K
[1 c  d3 c/ X1 t" O  ^3 v, c3 ]
if (item j( [credibility] of turtle (i + 1)) != -1)
$ B9 R+ F' `3 Z5 u;;
判断是否给本turtle的评价质量做出过评价的节点
3 P# ]7 O$ `8 Y# r6 k[set note (note + item j ([credibility]of turtle (i + 1))); s% [3 d: y2 M0 W, y! o
;;*(exp (-(people - 2)))/(people - 2))]
4 ^% U% s0 t) q; M3 q8 B
set k (k + 1)
; |, t7 f4 e# k8 b, j]5 N8 l, p  c6 [& N, d
set j (j + 1)
' v9 A0 U! H* []
- u) ~+ }) G8 O4 sset note (note *(exp (- (1 / k)))/ k)
# D) r) M# v* |5 d* H5 Eset credibility-list (replace-item i credibility-list note)
1 Y6 [3 }. s; Y/ {: O, Aset i (i + 1)1 r/ y; b- [" L& u3 @# x" D
]
9 l) C- u$ o1 R7 q2 Jend: _( B  E8 g+ V- Y3 D& v5 _* m

9 z$ @, h' X4 y: X: j+ bto update-global-reputation-list
# G3 a! Z/ s- t: [6 @let j 0
+ c% V. s: w# @# C# ]( f' B: Twhile[j < people]
$ w4 W% R8 B" @[
. L) x4 I4 A0 x2 tlet new 0
* U8 {' y: v7 o2 x;;
暂存新的一个全局声誉0 B. V/ r8 I, N6 h- _- O
let i 0
1 v* k" [$ g; H) h7 R: w' X# ~let sum-money 0
7 h$ n) r6 z$ y) i6 k! ~! K& Alet credibility-money 05 b1 R* f$ |$ Q0 d. c5 o8 N3 ~7 Y
while [i < people]
7 k: L' w8 G5 ^& w[( G4 w3 d! O2 g8 x* I# Q# g
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))( p& B/ o0 G  W5 n+ k2 E/ ?& i
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))" I( M( l+ h6 A6 S$ ~, L
set i (i + 1)
5 Z& _  [! N" _, P]
/ D7 ]5 _2 q8 k, J5 Alet k 0$ i5 W5 m' y$ \- h) E5 k  Q
let new1 05 Y* ^2 q' z6 I0 ^$ Q
while [k < people]$ _: [6 f7 l: Z8 \# K
[
8 z* h' B/ ^# S  O. Iset 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* a) M0 E# Vset k (k + 1)% W, D  j7 a/ F& W/ a$ X* I# o& h9 T
]
6 ]2 e- ^7 t1 y+ e, J, {9 }8 t0 Hset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) . {& ~% I. N/ h8 s. r1 t5 I
set global-reputation-list (replace-item j global-reputation-list new)
& l& t& I6 T8 O7 O/ bset j (j + 1)3 d$ b% f) O/ a# G# t1 R- y8 l3 b
]1 J0 }" N% r7 p
end6 l; D+ U& [" ?9 O" c& P3 ^; a# P& Q
9 ~+ |' U1 X9 ^! `1 m. F

6 D' N' X  x. g2 f- g, T9 S* t* ~" w- W% q, Y' {) p7 G
to get-color% Q* R0 N  G% Z' c

. |3 @, u' Y5 k2 M! Uset color blue
6 T- N6 j7 ^' J, g; a/ v1 f1 |0 k
end5 |: z4 _! Q$ l) n: p

2 o( o  K; ?! A0 O1 Q1 ^to poll-class, j7 o+ |+ W5 e- J3 W2 r7 p
end
; `( N+ a# {9 A- m8 q
4 m$ K# p- z) }7 @, Fto setup-plot1  l2 t) G+ M, _8 e+ E

8 @: v! \6 }7 M3 Q% rset-current-plot "Trends-of-Local-reputation"

  k7 b% Q3 q5 s: F; ^* _# W2 F6 L1 U% p" o8 A/ i* u9 A9 U
set-plot-x-range 0 xmax
- R7 x- B1 h. H0 f5 k+ L, Q
! E, ~: d& ?$ ?  R8 Z
set-plot-y-range 0.0 ymax

# b) y* S4 f. ^# D% b4 `0 W: @end
6 v+ C1 ^6 q' |" ^
7 `5 y2 O' f. X5 v# z7 V" d. Bto setup-plot2# K4 N. j/ ]2 e0 s. j6 ~/ |
, Y- D5 j2 N& i3 s4 V9 Q
set-current-plot "Trends-of-global-reputation"

) f- ~- m' Y, y2 p# h: }+ D: Q" z/ S, ]  r2 G
set-plot-x-range 0 xmax

1 I6 j( s1 U3 Z' c: E% ]! L3 G0 r5 K( S, X& @
set-plot-y-range 0.0 ymax

5 W% f1 H+ ~7 e0 Jend
2 o' }! _" o' E
" t9 D9 _! B) tto setup-plot3
- C% |8 p6 U$ d5 A4 N
2 {" i" g; G0 Y: ?% ~set-current-plot "Trends-of-credibility"

. c: u2 N. [0 p/ E
  p, t% L  Q$ V0 G5 }' `4 s3 Rset-plot-x-range 0 xmax

3 @8 R: S* n  f  E) l. k' o+ z9 F. H7 {. Q1 T' k' e
set-plot-y-range 0.0 ymax

) \* [% C3 i6 s5 J; Nend
  ^9 C3 |0 I# Y& E9 x
3 k8 J! n" F; H3 b6 C! M4 n1 H5 s. Tto do-plots
% m( u8 M6 M8 P  ?set-current-plot "Trends-of-Local-reputation"' X4 j: R+ r, p$ `3 D
set-current-plot-pen "Honest service"
* w* ]2 F: D0 `$ C6 bend
  L: p4 r0 l- B5 t/ V' B* _3 H8 _, c9 S
[ 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.
* W" A$ L6 z7 B
# j( k5 g5 ^4 c! A. Z+ H6 {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, 2026-6-7 10:48 , Processed in 0.020551 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