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: 14568|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 _5 g4 {5 O1 f2 M1 h# T( @
to do-business 4 a4 [; V2 Y4 x4 u, G
rt random 360
. B' a& b) w) y; B fd 1" Y+ R, H* l3 p  R6 c9 y8 M$ T% c
ifelse(other turtles-here != nobody)[
, M6 A) c8 ?/ J) H0 T5 X/ Y/ K# m   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.8 o2 L2 [: w  V
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
0 R6 L6 z/ C/ {0 k0 q' J   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
- r: J% |6 i" ?) ]4 r( E5 n   set [trade-record-one-len] of self length [trade-record-one] of self
  K1 F) g+ c4 B   set trade-record-current( list (timer) (random money-upper-limit))
2 F1 |, s+ }' O+ [- B' ]* B& l7 \/ g' \9 Q! c& b+ f/ M
问题的提示如下:. d4 x! X4 @' i# O4 e% N& y

; @" b6 a) y2 u& v8 ^* yerror while turtle 50 running OF in procedure DO-BUSINESS" c: V& K" J3 L8 q
  called by procedure GO
/ {. K# H  j4 i5 FOF expected input to be a turtle agentset or turtle but got NOBODY instead.+ C  T* \, L/ T* `* L/ X5 \) ?
(halted running of go)9 c7 a( D! S1 i  R, H3 _+ Q
* o5 k( ^( W/ ]) }
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~~( L$ D6 A5 m) N( d% K
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2 b) i! |: z1 T5 K2 Y1 u
globals[
3 {5 b, O2 |1 W% d. f& jxmax+ Q7 ~& x: E0 d
ymax
- f! R2 a5 e  C4 Y7 y+ [$ y. gglobal-reputation-list
; {4 g3 d! }" F5 l& b6 ]) L( `4 ^, l
;;
每一个turtle的全局声誉都存在此LIST
) s  j- o: O6 @- ~# m. pcredibility-list2 v! ?' p( H/ I9 T# D3 {" k  c% g
;;
每一个turtle的评价可信度1 l  a5 q9 G7 t
honest-service
( H! [, B' {% n3 N  F3 munhonest-service
& h2 ^* x8 u# y2 g1 m$ Joscillation* Y: I  N7 \8 P( A$ m
rand-dynamic2 X' q* ?/ i3 E) u  l+ J% W
]3 x7 W$ Z& c0 W5 P$ h& p0 L

1 s) W& k3 [0 {0 h* \5 cturtles-own[
7 v* G/ W) o' ^trade-record-all
, Y- `+ z- ^5 l1 c0 r: \;;a list of lists,
trade-record-one组成
6 s( j. y  X2 N( {) l5 Htrade-record-one! C3 _7 j! ]. f$ B
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
' z# L* S8 d% v! A8 f6 N% y' a6 h& Z, O$ E9 J
;;[
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]]
; \1 H, Y) U2 r; C2 H& |3 i# qtrade-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]! E7 c( o6 s0 @& b8 ?
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list3 }  Z4 K* W' W" j2 V/ w5 D* c+ ~. K
neighbor-total
( C7 p1 {; C! F8 B9 };;
记录该turtle的邻居节点的数目0 y" `- q2 n: A% ^3 T$ F# v9 `
trade-time5 r0 S$ o, N8 }& z
;;
当前发生交易的turtle的交易时间( g. V/ C* A: H4 s7 P) c
appraise-give% `1 P. a$ }+ o& j
;;
当前发生交易时给出的评价
+ H5 L1 p: P1 b4 m& Rappraise-receive
  c  _  F! S$ c! b$ ~;;
当前发生交易时收到的评价
  W0 ]4 j' \3 |1 Rappraise-time
. ^+ C9 W# ]0 f+ h# ^# S7 l;;
当前发生交易时的评价时间/ }+ x; Y' n( X. F3 a
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
. T& H+ \% q4 v; atrade-times-total
+ ?1 l" t) o: S;;
与当前turtle的交易总次数
; W# h5 X* J1 f, V2 e# w* ktrade-money-total4 Y. N3 [1 G6 I; `" y0 [
;;
与当前turtle的交易总金额
1 a& y5 m- Q3 f7 k6 Ylocal-reputation" d" p( ~, e' ?* f! |
global-reputation
$ W  ]  ?- V9 n8 E8 l! W% F- X7 dcredibility) h$ q) Y2 p4 @; o6 o3 s! L
;;
评价可信度,每次交易后都需要更新* u) v/ a. L( q7 {8 `- D1 p$ ~
credibility-all
7 W. q& Y$ a+ [+ E+ D# N( r0 [7 S;;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
, B2 H( p0 u% G6 |' z" s+ G, Y% R' b6 m. P: ?# j$ o5 h$ m
;;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$ G& k: z! }  D% {8 P# Q$ z
credibility-one
/ [, a, R9 R3 r6 X: M;;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
- p. K* E7 P$ P0 b2 |1 Pglobal-proportion3 F) ]& {7 B- X  k+ l4 o% n
customer9 b- o/ `. \  P. k! T
customer-no6 X- @& u7 t3 H4 _" h" M7 j- u) ]% c! s% x
trust-ok4 M) h# c. \* u, Q: C3 |9 i
trade-record-one-len;;trade-record-one的长度3 i6 |7 p; O' ^/ u9 A% v& Z
]" ?: Y3 O: b$ m5 q4 W' k- r

% y* N3 D: o* C3 C$ y;;setup procedure
8 i3 u8 @8 I# ~% P7 P
5 {' g/ w" D7 |5 eto setup% B4 B6 K7 ~& x( ^+ h

" G) f, ~! Z  J* q3 R' cca
2 {) i; w% ?0 ~
" t6 Z" t2 J) j/ n0 _2 r  u+ Y
initialize-settings

+ ^- F9 e0 S0 T; a* ]6 Q  d) W) n3 U# u& O
crt people [setup-turtles]

* ^6 ?. D4 ?" V) a' E& ^$ P+ [- S# W( P. i
reset-timer
3 k4 P! M' r: k3 o2 N5 [

& X( I+ P+ {3 L( }, C! Wpoll-class
2 b( i8 K6 n7 f2 |* \- V& C
) ~5 d6 {7 I; a6 D: R% N7 E
setup-plots
" z: C, n4 ^/ _" @7 H! v" ~

2 b7 Q" g$ V* r4 w: I0 q) g) rdo-plots

. f$ M2 |# x. }2 B" {( X4 f8 Fend
1 ]! z0 ?( m; h! O( E
7 M$ [7 z1 ?6 n9 `( k9 m) Cto initialize-settings/ R+ l$ J6 b7 m+ p' E
5 Q. t( c" T+ `
set global-reputation-list []

' b# F, n! R! b1 C9 |  w/ [
/ S- R6 B. ~; q  g! |set credibility-list n-values people [0.5]
, z0 E; t* n4 m4 d

6 V( f+ C6 d' Kset honest-service 0

0 U1 e* z) S; s7 R  x# G
. q0 _6 B; N; O! Fset unhonest-service 0

* N- {1 b- O$ Z  F6 k! ?0 j" S7 \+ ]* B9 o& N" f
set oscillation 0
, H: e& S! g0 V% f( q
$ B0 {; u/ b/ H/ H2 |
set rand-dynamic 0
7 N) D* f% _6 A6 X
end
+ L8 i# g, [* x3 a* U
! t; m3 J% A! D; vto setup-turtles
( ^5 l( d5 K9 e: `* T9 a$ Q! p  m, m& Qset shape "person"$ ~3 _- d: o1 Q+ F, Q
setxy random-xcor random-ycor
8 E( G$ ~. t9 ?; R  Rset trade-record-one []
; b! F6 A, ^2 P

% o/ X' w6 n1 L. D1 c( cset trade-record-all n-values people [(list (? + 1) 0 0)] / p3 O+ ?. |1 ~" X  n
8 s: s" X: D2 c+ M* G
set trade-record-current []
; s6 `9 r7 e" T6 R. c4 uset credibility-receive []- D: {2 u7 H, e2 ~0 A# F) [- ]
set local-reputation 0.5
8 {3 G6 @. D7 q4 v0 gset neighbor-total 0  Y1 ^8 @, z. s! Y9 j4 s
set trade-times-total 0+ W$ w6 w* n* |- L' W
set trade-money-total 0+ n- G3 @, ]3 s1 g) c# t3 O0 e
set customer nobody- y3 u+ W# i1 \% W% @
set credibility-all n-values people [creat-credibility]
6 `2 o+ _( A! \' r, x0 K) i) K8 D8 ~set credibility n-values people [-1]: X4 A. u0 Z) N2 I' i
get-color* D" S" A/ Y3 z$ _

- h$ D: L1 K# i; |/ N8 |end
6 I) U" Y: u! q+ M1 A$ J: `% k
7 p: }& Y& @9 ?6 W0 r% Z% ^to-report creat-credibility
; t# _. K1 J) H" `+ P5 ]- areport n-values people [0.5]
% W; G7 J" [' P; J) P2 fend
- o$ J( O. D7 H1 K# |& a9 r6 _% ?! V1 e
to setup-plots
6 e8 n- ^1 N: _9 `9 }! K0 m. H( Q# I% J$ L$ K+ |
set xmax 30
  J+ q- O  B1 q6 i& a! Z0 N
. O* e- q1 _  a6 g; o
set ymax 1.0
% W; J0 H. C; ]! N! F( d& {( q: V

' E2 ?1 |2 Q2 Qclear-all-plots
5 }' ]. h0 u0 ~1 v- I: `$ W% D9 P
- `7 X) x% m) G1 E* y# u2 Z6 @5 C% W
setup-plot1
/ B! |3 m1 Z4 A0 z
) c/ D7 H  U2 }9 p2 T  p
setup-plot2

1 w0 U1 ]6 x8 I" N' y  g& f
6 l8 }: |* k% msetup-plot3
! Q; m1 h( t) w
end
9 K! x7 c2 l4 \+ Q9 F8 q3 f/ W0 Z# j% h+ v) l; W. g! O4 j' h$ Y
;;run time procedures
! y  M; @1 m: v- L
7 J& T9 K* T+ N2 f1 [to go# T8 x1 g2 C' I% g' q; W

& k3 e3 m4 z# r1 w* F7 x5 _* m) Vask turtles [do-business]
0 @, q+ ]" M( ?! u6 ^" n% k
end
: ?' k# A: o8 [, W2 M# R8 y. @) @
8 ^" Q% {  K) \% l, Tto do-business
4 ?- k. o* y. c' ]* G4 l. X! v

: J+ Q% e8 o8 X" r
+ W% \6 ?! {0 C- k  brt random 360

7 p9 M, G: _4 U; j- R, V, v
; m3 _: X2 y0 N( {: Z+ Vfd 1

, u: M& S3 _1 M$ W# K* ~$ }3 ^' o+ S' K( W7 O5 ]  c
ifelse(other turtles-here != nobody)[

' T  E0 J# H5 P7 o. `1 y
5 ?/ j$ H7 v) S: F& Bset customer one-of other turtles-here

$ \, W# c' T3 u; {6 m
# Q" w  j5 w+ E1 t0 ~;; set [customer] of customer myself

6 _# Z4 E5 I, T& k( z
# \" U0 q7 g& Z2 J- E6 n. R) V1 bset [trade-record-one] of self item (([who] of customer) - 1)
. q9 M( o: o' W: F; u, o" H. v5 V: }[trade-record-all]of self! z  Z1 k3 f2 ~2 n: [5 l
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
+ F; v* W- \' z+ K+ R
- m- F: [* S5 Q3 E1 k+ s5 {* G! T1 u
set [trade-record-one] of customer item (([who] of self) - 1)
7 h. m# j/ z- E/ o9 D[trade-record-all]of customer
* t5 U" X1 g8 U0 p2 e# a/ F
+ g( h& D! a2 G9 }; T+ I, _5 w" |
set [trade-record-one-len] of self length [trade-record-one] of self
' Y; I, K* r5 b+ d

1 \. q/ E% m% H3 Wset trade-record-current( list (timer) (random money-upper-limit))
/ G' g% T' x9 A8 A& [
* P$ s9 I, V& p6 \
ask self [do-trust]" W( l4 M$ [; [4 k( }& J4 p# }0 d
;;
先求ij的信任度2 `) ]7 F% D* v( J$ m6 Z$ t+ r, V1 {

7 E1 C& N1 m/ I  g2 v* F: Rif ([trust-ok] of self)
" c" P- L& I& l# y  {4 V1 Q. j8 d;;
根据ij的信任度来决定是否与j进行交易[6 N% u8 K. e* y- r. s
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
& W+ J) D, e1 C- E8 U6 e% {' o3 S, G) E
[
8 T( j$ m( L' O2 T3 ]

$ O! c" B9 B& Q4 _+ U; sdo-trade

6 i1 _2 ^0 o4 m( g$ k: d5 w* M% o' i7 J* ]- K
update-credibility-ijl

7 D! y- B! W$ E" T* m
3 D0 ?" V( l, ?update-credibility-list) K$ K! O+ w! |
( m& ]& C# C$ k
6 g: {5 b/ z  r
update-global-reputation-list

; i1 |4 n7 z# B6 ]  o( d7 r9 y, X' z2 J: k  _* a- V
poll-class

  p  F0 S- ^& u+ s3 A  h1 ~) E$ N5 x- L5 e' C! F5 C
get-color
7 ^; v8 F) C9 O

5 I. }% _# J" P+ y" P) _+ d]]4 Y) ~3 a/ W0 ^) l( @

* I; @9 ?. u: I; Q: y;;
如果所得的信任度满足条件,则进行交易
3 ^) a1 [; J9 P: `. T1 f
1 W6 Y7 u! O9 L0 R; a' z[
& {9 Q0 ?! P- O8 [

* D2 P7 |7 p2 V. Rrt random 360

2 V: O8 h; v4 ]1 M& W9 i9 O' L/ ?
fd 1
! ~3 b4 q: ^+ T0 A9 Z/ G$ R
, @* c: O! S1 o+ U  @* F+ C
]

7 D8 i* D% S8 j+ y
5 |' U, [& k$ \( Hend
6 w" |) n& ?( v! k' e
" N' p, h3 Q$ Z' f9 S6 T9 _0 L
to do-trust
) v+ d$ c* `* c* s4 l, _: @* Nset trust-ok False' D. ^; T& ^! T6 A" _" I" l7 u2 P

+ [2 g9 @% O1 p  [

- z9 I; B  }# M3 ?: blet max-trade-times 0& F6 b. l; m4 M; R. }
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]" e. w5 x% |# _/ X' `
let max-trade-money 0+ ^1 i9 F6 s7 [, K. G
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
# d. I  k& m  X% S% ^, k" [. Glet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))% g4 o3 F6 G- h& M! F: F, M

" t7 ]8 T3 q0 a0 k- E2 o

/ ^3 J& ?, w3 @get-global-proportion7 p4 k% n7 x" G1 ^% s/ v( `
let trust-value. ]: Y, Z8 b$ k: h$ a" O' C
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)
0 W6 P, t2 t7 f
if(trust-value > trade-trust-value)2 r5 }1 d; O" ]1 z* E+ e% p! O
[set trust-ok true]
" a- ?6 ?, |" e# d! Y* Y$ Wend3 H4 o" J3 l# z1 ^, D

- ?6 |8 O4 P# q& Qto get-global-proportion6 y& N8 u9 x7 X! N) W* y2 S2 }& O
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
, s) U) e; q) j3 a8 s. e7 F: T. T+ A[set global-proportion 0]6 `% b( |3 S* T6 F5 g$ n  r
[let i 0( R9 u5 {- U, H; C* D+ G
let sum-money 0
. m1 P! I& j/ F/ Iwhile[ i < people]# E* L, s* Y+ ]9 l
[
/ @( @, f0 k1 T8 {. v9 Xif( length (item i! s7 C1 c3 T  a/ C* f2 I, Y
[trade-record-all] of customer) > 3 )
' q, G; _& L7 o/ ^) ]5 W& j9 R
[
* D6 e2 w# B0 H$ P9 J1 ~set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
2 I; T4 k+ K8 q4 K6 I9 U; }  a]. m" \5 E1 R# ]( v* c8 W9 X0 a  @( V
]3 C5 i. S& k5 N9 z* D7 _) F
let j 0
$ a4 s2 f- w+ ]" ~0 `. flet note 07 z8 N' s2 z2 o" e2 Z& G( |
while[ j < people]
6 C) _7 _/ M9 r8 w$ \[( ]( Y/ s' E9 O3 E. q5 D: j# B
if( length (item i
  V/ S0 J' y  k: h. a9 V" A1 r" R[trade-record-all] of customer) > 3 )
! t4 n, `8 L% {2 [8 x
[1 s9 }, ]  g' u; e
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
7 t+ L0 _/ Q4 P* A9 c( Z4 f( M[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]" v. z1 C7 W) a, C# R  Q! {" x
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]) D2 |) e6 r, o; U% e3 ]$ T; ?
]3 L/ t/ _: H& K/ P+ v
]3 p8 X/ H! d# Y/ o% n4 M
set global-proportion note( v3 F1 Z6 s) G, R& \, }3 v9 _
]
( K; b7 c! k4 @5 Q, tend
8 j* P0 X, W7 Z- y  k# H
: X: K# a) O2 f. Oto do-trade
) J/ j& m, B) H: W& ^2 y;;
这个过程实际上是给双方作出评价的过程
, p: m1 o& m9 z% |2 ]. ?set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价) v, x7 E+ G( S! g1 q
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价' n0 m( Y; I" B% r( z! I% z
set trade-record-current lput(timer) trade-record-current6 n6 A! T1 Y, H' i+ X: D3 Y
;;
评价时间
3 {! Y8 J- {* {+ W: \7 W/ aask myself [
% ^+ G" \+ n, P2 h9 yupdate-local-reputation% M6 U. d6 _2 K3 s8 v" c9 _' y0 r: o2 G
set trade-record-current lput([local-reputation] of myself) trade-record-current
* K7 a6 x! }+ V+ ]" U]
* _9 L8 @0 S, @, s7 i# Bset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself6 B. U/ [4 G$ |1 _3 Z
;;
将此次交易的记录加入到trade-record-one+ m; d- N" ~5 F5 e3 P3 \
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
  {6 \3 F- r, alet note (item 2 trade-record-current )
7 r, b; y; q& u: N; }set trade-record-current
) {2 p3 V) N: G6 Y3 |- m(replace-item 2 trade-record-current (item 3 trade-record-current))
6 Z! T7 ]2 F$ y7 j  Q! g. b9 k
set trade-record-current; Z2 G+ x7 o. [7 F: Y- ?2 t* i, b
(replace-item 3 trade-record-current note)
1 g8 _& r5 t4 V; y% O1 e+ G3 X+ ?' `8 I  Q( H! ]4 r4 ?* m, z/ }: f
9 u. E0 {( z$ r; N* G$ a# A
ask customer [
% `  S# `3 f! N9 \* B& A9 rupdate-local-reputation0 |) S  n- |+ ?4 F# X6 M: E
set trade-record-current- V5 X3 P) B3 N" L8 ^
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

3 F3 `- a8 M2 j% j* o]
3 f0 ], \$ E( c1 n: m$ k3 Q8 b. f. f. P( |! ?7 V- o4 O
& W( o2 b6 {1 Y9 [/ o9 ~
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer8 R9 W; j0 M0 e- l; {
+ z, k$ Q/ x( A2 w- x3 h2 w  m
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
" I/ a# W; v! f( [;;
将此次交易的记录加入到customertrade-record-all7 D: m4 G& ~3 _6 t" F0 W  I& Q
end7 V6 H) C# H% o. M- l0 j8 R

! h: i5 F4 Q1 \to update-local-reputation* M1 i% g* R0 U
set [trade-record-one-len] of myself length [trade-record-one] of myself
: [7 d( M& Y% k9 T' s1 K% T# E! B. w) x4 R( q
$ A9 o$ U( W  ~' O3 f9 Z0 _$ c
;;if [trade-record-one-len] of myself > 3

& p: L# N2 T; Z/ g& n  c& O% a7 uupdate-neighbor-total
6 C2 q' M' F4 o8 _7 k2 P;;
更新邻居节点的数目,在此进行$ I; {' U1 B) d* Y7 X6 h/ Z
let i 30 d2 ]7 D* @3 v" l5 i3 O
let sum-time 0! j& H/ G8 U2 {+ {$ n
while[i < [trade-record-one-len] of myself]
) [* d+ @& X% N% \1 |' |3 b7 W[/ u/ P  x1 m4 V) ^7 o7 F/ F
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )# Q+ C8 \) t5 Z+ n1 Y8 Z% M& c
set i
8 `+ v6 W3 J9 ^% l: k8 E& p( i + 1)

* W7 m7 }$ O* Y- v$ J+ h]
& S9 y, r3 k6 O# k% ]0 i' alet j 38 B# `$ F& b5 |0 X! o
let sum-money 0" Z' |1 A# E% U, {- b% I9 v5 C
while[j < [trade-record-one-len] of myself]0 Q: B8 t- K* |( @6 X5 N
[
, |. ~: U1 L* d: ?+ jset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
/ w3 ~, l5 j( cset j
: T( W1 t9 x7 a7 r5 j( j + 1)

% v1 j, p! _) J: S9 w6 y9 \$ c% M]# [0 g# h; k# q' i: `' O" @" V  Q; j
let k 3
9 G. [! N; M, _5 t- r6 ilet power 0- g0 s4 R/ w$ W5 C
let local 0
5 R6 ]+ W, |: e- U8 v; _while [k <[trade-record-one-len] of myself]. F+ y# M, W% m* g% U
[
2 O2 k! @% {4 i4 }5 Sset 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) 4 Z- [0 O3 u) h* q% q0 |
set k (k + 1)3 r7 G, N3 p' s
]
0 t1 p/ e# J8 n& Oset [local-reputation] of myself (local)1 f  h; P# a4 F: X( N
end
3 t8 @4 D8 L1 y- J
7 d$ L0 {# S; E0 Y8 Zto update-neighbor-total
; r: @( Z4 K0 f9 h
( E! W/ O! D8 `4 Z( R/ oif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]4 F  w9 X: ]3 [' J$ N

% ?! C* Z5 D. i' w- t

# d# r  F" @5 N4 ]5 aend
0 z' C! N6 R4 L- m6 q- O' D* r( L- a+ ?  x0 w
to update-credibility-ijl
& O! Y$ S: C1 N8 Z: D  X( `) x# v
& p6 q( a9 a( M  y; C1 I# C2 Z;;
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' o+ M  m! u2 k/ H5 a' x, T- Wlet l 0" r3 P2 w0 X& _# e# t- t
while[ l < people ]  a1 W1 c  c4 y/ s2 ?: U
;;
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% v3 g) Z9 Q0 T% i: y0 S
[
$ \, t. p- I0 p5 J& s- N; Z% Ylet trade-record-one-j-l-len length item l ([trade-record-all] of customer)( A& O; ?4 ?. p1 h- ^) F
if (trade-record-one-j-l-len > 3)
% d# c; P& l$ Z: \( d0 m  d[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+ D3 i$ ~- c, K3 M/ ~, a- h
let i 3( D+ P$ e$ F! I1 @' ^; l; X
let sum-time 0
5 C8 ^+ w' R+ u; q0 W7 N+ awhile[i < trade-record-one-len]  @& B* C( \8 a4 P; u% L
[' b( k' s- [% N$ r
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
" k4 X* M, _1 ^' ~% yset i( f. W( q6 |# N* B) D3 [* {, \
( i + 1)
- n5 y3 u% }' m, Q
]
* f9 ~6 o7 j; m% Y- @let credibility-i-j-l 0- y* R0 U/ f. i" F% ?% t2 {! d
;;i
评价(jjl的评价)0 B  ]! j+ X; m/ T6 e
let j 3
6 @6 p* E3 f9 n- i1 olet k 4
4 |' g2 s$ m0 \# ewhile[j < trade-record-one-len]8 q0 K% _! i9 V8 B4 Z9 s
[
2 M& e2 u* y* F6 v$ Iwhile [((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
- L8 {2 x3 G8 Rset 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); j% m& |/ i# O. g4 r1 U
set j- k8 q) V& W% b" \
( j + 1)
) i) z( m5 U6 t' W! v, x
]8 C2 O% j9 ]% K% N. L  B
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 ))+ X: }# r& A. J$ u& c6 j; }
" q6 z# q, I8 {. @) O
. J$ n  Y9 W8 T% Q; M& u
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))2 h1 K+ Z  k7 j3 S
;;
及时更新il的评价质量的评价# c' K& s1 }2 b& w3 u% L; \  c
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]& Z, V3 |$ K4 B' [) P2 ~
set l (l + 1)
; \1 c! R4 u' m: k" r: q3 I4 p/ _7 m]: X( q: @5 C  h# P% _1 B5 Y# `( t
end6 }% G( j& u4 V+ n2 ?: u2 g* K9 o
: |5 D+ |7 f, i2 r, V+ p
to update-credibility-list' _, Y. [5 {. I8 T
let i 0' i. s5 @8 J  I0 I- c- v3 |
while[i < people]  X$ P  \0 ~6 S( B
[
/ D8 U& Q+ D2 X5 Ulet j 0
( w& e9 i7 ?  P7 A, Zlet note 0
! f" x  A, f% J* D) O8 @let k 0! H! u. J, ~9 g+ y$ M7 Y
;;
计作出过评价的邻居节点的数目
  A) c8 ?2 ~, twhile[j < people]8 L, B8 Y6 I! K1 S5 a6 `& ?
[  ~: V# ?  U: X: k; m5 b0 V
if (item j( [credibility] of turtle (i + 1)) != -1)0 ]1 i$ k/ Z" L3 {& R
;;
判断是否给本turtle的评价质量做出过评价的节点
5 w0 `2 |2 G' v7 L1 A) e[set note (note + item j ([credibility]of turtle (i + 1)))
( S$ {% b3 g7 z7 s3 {;;*(exp (-(people - 2)))/(people - 2))]
1 p' f% u/ D) b+ \6 b' `$ _
set k (k + 1)# s# m, [$ a, S: F
]
# Q0 E) E5 ?  W0 A) mset j (j + 1)
( l% q  J3 q, \6 Z) E! b) K1 R]
) J0 y. o, y9 m* t( cset note (note *(exp (- (1 / k)))/ k)- ^1 C/ u2 [1 m2 E& [& U
set credibility-list (replace-item i credibility-list note)
6 S# T2 Y9 |0 Bset i (i + 1)
8 A- V6 k# T& S5 ~; S/ a% l]
7 `& {7 j# _1 J+ N, i1 `. D/ l9 B! p* Bend
- J, L, r  ]& c. P+ [; P$ f# R8 Q, e, c4 G
to update-global-reputation-list- C0 T% d$ N  r6 q5 j" e+ o2 D4 B+ l
let j 0
8 W% i$ s% H* G5 y8 _! b! V. e; F- ]while[j < people]* W+ `  b9 e0 @" ^8 b6 T
[. E1 k1 I, `: r: @! m9 p
let new 0
4 i2 u; p4 Z$ z9 V;;
暂存新的一个全局声誉. D4 e! D1 u2 G) I0 ~( _
let i 0* v$ C; W9 g( p/ m/ I; ^9 M
let sum-money 0$ S+ {3 F/ P. f6 @
let credibility-money 07 W+ }/ o) n$ V7 C# U% b  H
while [i < people]& I/ v+ U+ e" s; Y. X* j
[2 ?' C0 `2 V( N7 J) b# J/ H# B
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))6 p3 ]/ z7 @' ^  L% p
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
+ N( M6 o6 G+ L& iset i (i + 1)3 m4 V+ `$ i: C- v
]
+ U5 o5 p6 ~' ulet k 0; z0 x7 `0 h* |
let new1 0
/ l# t( o; M# t. f8 y0 S3 Qwhile [k < people]
& f# O+ {7 k: g- c[) w7 R1 s- t$ S6 W& x
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)
+ I( D  v* X+ B  k$ gset k (k + 1)8 E: ?9 M" w6 G; b6 _6 L6 X
]
- h& G$ O' F1 L! r$ b1 [set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
) u1 }  ]1 F* F* D5 L# U, qset global-reputation-list (replace-item j global-reputation-list new)
# t: q/ D. M0 I/ E8 C! ?( q, Aset j (j + 1)$ b0 O1 _7 z1 A! f0 b! H: _
]+ A  H4 A$ _# \! O/ O+ w  ?; P
end' `1 U8 ]1 `# ]# u# l( z6 v
2 u/ m* V2 ^& t# r% K  Y6 I8 i

: L" O7 h1 Z. Q: \" J4 G, X# H
$ U' i4 _0 t1 K5 w+ qto get-color
4 g4 S, [6 u. }7 j: r. A8 `3 t& m7 U& I1 E- }* |1 J1 y
set color blue
8 p; m7 r0 w6 X
end. X( D8 X2 Q! \/ F7 ?* [
8 U  y$ a. Q; j5 m0 [+ q2 b. t
to poll-class
# h/ K( ?+ o5 dend
' F+ l2 E9 H' I$ k
  _4 l) [! m7 {+ ato setup-plot1
: u3 h. x5 ^( {7 q; W+ w
' U1 x5 c# O( F, a: _' I1 W9 eset-current-plot "Trends-of-Local-reputation"

/ S  Y  T$ `9 z# E( z* n! C" L' F& v( y! J) {, a! _
set-plot-x-range 0 xmax
9 V- J! d, p7 e* K# y: D7 C$ h

( O$ r& |$ I7 G" D4 @set-plot-y-range 0.0 ymax
5 G7 G# l) L' Q: D- B, ?* P0 D
end
8 q6 u4 Z$ W, o/ k( S* A
2 A4 v7 k* d: }1 Oto setup-plot2
/ X  l. N: y) Y& M+ D6 y  m3 i) H& X: T2 F
set-current-plot "Trends-of-global-reputation"
. X8 Y6 ?; h% }) M" ~
8 J# _3 B, P: B7 O
set-plot-x-range 0 xmax
7 I# c7 X6 [! B/ `! ~- j9 u% \
' A/ g; r! Z9 ~1 L, ]- H" p8 Z+ O
set-plot-y-range 0.0 ymax

, x% n0 j$ L5 k7 ^( P; s: k) Tend# W" ~* e3 H4 w5 x; Q+ _: _; c

% Z$ i9 A7 q, z3 c1 xto setup-plot3
, L7 }3 c, b; x; e. c: \
8 R2 }* [& Q* l4 N+ tset-current-plot "Trends-of-credibility"
8 q# I% I) ^& @6 k9 y7 d' ^

) V# x/ t, n9 \; V0 }8 `4 hset-plot-x-range 0 xmax

! H: L& N! B4 ]$ B
* ~8 P2 S* M) S$ l: c4 M$ K: w2 ^set-plot-y-range 0.0 ymax

8 S% C- X; O4 c3 I) Eend
2 `: o0 R& S/ {  {5 \7 \  g: O
1 S2 R1 {' x# _+ Kto do-plots
) `. i' C/ j  d. m, T! Lset-current-plot "Trends-of-Local-reputation": \, M5 ]: A- [# p- p# w9 f. H/ m% M7 Y
set-current-plot-pen "Honest service"5 f( W! u4 s. r* F
end9 X- I# N. n# K# W0 U

/ `9 L( a( d# ^$ p3 Q# w[ 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./ v0 k" E$ {* b% n, `

' B. [, F9 z' J" Y" P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, 2026-5-13 17:24 , Processed in 0.022675 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