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: 10808|回复: 10

[交流] 关于turtle的使用问题

  [复制链接]
发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:4 q6 E! }5 @! J% \  K
to do-business
" ?  ~$ h* o( e; A! T/ z; h rt random 360* |2 H1 }! x% i! K& P2 s
fd 1
( `2 j3 ]# c' \+ P" h2 X/ y ifelse(other turtles-here != nobody)[& Y/ a8 V8 D6 G- S! L" N
   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.9 i8 t& P0 q, J8 Q$ ]; @
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ; P. j1 N! K/ \7 X+ k* V: J
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer" k, Z  v1 P* U. @/ w+ ~
   set [trade-record-one-len] of self length [trade-record-one] of self" _) F5 s2 c7 W' d* Z1 s
   set trade-record-current( list (timer) (random money-upper-limit))5 b( T% \; E% [2 [

8 G% `) Y2 y" K) |. n0 g% X" b: F问题的提示如下:
3 B: |. Y. r: S3 B8 U9 k
8 d: j& _  l, y' ~' E! Ierror while turtle 50 running OF in procedure DO-BUSINESS% {1 k: }* I# X# W
  called by procedure GO
5 z* W5 ^' @9 |: l* N' bOF expected input to be a turtle agentset or turtle but got NOBODY instead./ l% ~- _6 V# q' V% @
(halted running of go)
/ r5 K6 l, `- h4 v3 {2 B% e# ?4 J9 v% L8 p% `0 ~
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 P0 ~5 x( e: B
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$ H8 o  @7 {5 f8 Y! s
globals[
8 {( D" B, w( `9 T6 Uxmax
0 O: n$ u, [; O; N; P. Wymax
+ z( y$ r( {1 [% l( ?3 x& \global-reputation-list. R9 a$ I& r5 }; W2 f; ^8 s
' N8 t+ _% @: q  B5 y
;;
每一个turtle的全局声誉都存在此LIST
6 Y/ _8 [( V) K# G9 \credibility-list
- H* _* m* C# @8 z# A;;
每一个turtle的评价可信度
$ T: }0 k8 [5 K/ S% V+ }honest-service( G% o( @7 O* b3 `/ ~
unhonest-service/ e9 c3 V, L  U: w! D* ^- m
oscillation3 s" `- X! l2 j
rand-dynamic! b, y# ^' l0 k! h1 B8 M8 \
]
0 o2 C, [, N( U  r& U
% R- M& R) J! w% P. fturtles-own[$ I6 q- P" f9 |7 y3 H% _& ~9 f
trade-record-all
' R0 O2 n& `9 s1 N;;a list of lists,
trade-record-one组成
$ C$ x+ I1 V- r7 Utrade-record-one9 e2 U/ F8 O4 \0 O0 }- K) K9 F! o
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
) w' l3 T" A) d4 L3 J! N
8 B) D0 l0 W# C( z;;[
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]]
" u$ X- p: a" utrade-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]
: U# n9 }  r3 n3 W( _2 Vcredibility-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
* M; B4 W" I8 y/ g" @. Lneighbor-total
6 b, N6 k/ y7 b% C- G0 o& B;;
记录该turtle的邻居节点的数目
3 m2 R: {) C) b6 z! ptrade-time  Y& V5 o! P  _* ?  I
;;
当前发生交易的turtle的交易时间9 A$ Y8 ~8 B. w; s
appraise-give  V" {( X1 M) w; m" D
;;
当前发生交易时给出的评价" M  u7 a4 ]: C) ^" B8 ^5 M
appraise-receive% P; O9 A: ^) l8 R
;;
当前发生交易时收到的评价& L. g: a5 ]+ p) a+ s* o& |& J
appraise-time
) ^# z& p& E) n;;
当前发生交易时的评价时间( v# H; n% Q; x2 Z5 S: |4 y" C
local-reputation-now;;此次交易后相对于对方turtle的局部声誉! ?1 Q  r+ {9 G; B) s
trade-times-total; L/ h% G* ^: B6 h8 J/ R
;;
与当前turtle的交易总次数
% v& |. H; P3 O& Gtrade-money-total3 F6 E6 c/ c! u
;;
与当前turtle的交易总金额- J* [9 S  g$ B
local-reputation
1 n4 K* n- ~/ fglobal-reputation( T1 W4 X% d7 u0 V0 [" D+ a
credibility
/ m2 i' r* _2 T, X7 p$ {;;
评价可信度,每次交易后都需要更新' p  J8 k8 [. I8 |5 F  r  H
credibility-all
  ^0 F: N& E# g3 \;;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
' K4 {7 B7 c6 x; s- _5 L0 d9 o( c* c
;;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! c* c' Y* B# y1 Q9 ]
credibility-one- y( t* b$ ^/ I) o+ G# l( R
;;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
0 o* w& K9 ?; ^8 q& Y, `% Bglobal-proportion
/ B, F4 s2 [3 a0 l1 j, Scustomer
) {6 ]: x8 P! m% {- R' rcustomer-no0 P4 [( l+ `" `$ B
trust-ok& v2 u1 \8 j2 M, p) C
trade-record-one-len;;trade-record-one的长度! x! M. m% L8 {* f! X
]
' x! E) ]2 m; v) \# H8 ?
2 r2 e  ]9 ?7 N/ u;;setup procedure  G, X' X2 G6 d5 E# o; r

7 D! W/ ~7 T) u9 q4 }& h; rto setup
  t! P$ F: s6 Q, ~$ g9 T& m9 O* {$ K# O4 Y# i" ~
ca
# D* R. u1 @2 D5 K8 t

7 B0 I. Q# ~- Hinitialize-settings
9 z8 U! P8 J+ M

8 L& y& o9 R2 x' L7 V' F6 zcrt people [setup-turtles]

1 K7 b# i$ h( L4 a7 B$ A- L$ L4 N5 D2 I6 C1 @8 u1 T3 g
reset-timer
' y+ C3 C$ v% I3 A/ L' @3 M
' Y- P" N) u- S) Y% \9 M/ L
poll-class

7 V3 E9 i! S$ C( d0 `5 F  Z; b( i- ?6 }) }5 h* x3 h
setup-plots

0 X, `* U6 ^: v/ H& C5 O; y  ^: L$ p) j# f  X4 r
do-plots
- ~, \9 E$ f: l
end7 Y* p1 X9 v$ U' U5 s

! h2 p9 U# m# C* g/ N/ _to initialize-settings4 |( g  ~" g* X; f" x) a$ ^

/ U: i. |$ p, B% w4 `3 j9 kset global-reputation-list []
) S0 e  Q( l' N3 s" x0 R3 F; V" x
! y# q5 h; L  j
set credibility-list n-values people [0.5]

" u  b# Y  E, _$ m) I2 a7 ^5 E; D- @/ B1 A- O: W: E" b8 o9 \  C
set honest-service 0

6 [5 d3 t- _* `  {" w6 e+ W; Q2 b6 I) _' x5 g: h7 z
set unhonest-service 0
1 ?, B) [3 d1 W$ }8 y
+ Y( q- c& g+ X
set oscillation 0

: h* F* ^8 e* w
$ Q8 |9 j& v, ~7 M0 cset rand-dynamic 0

7 ~& E5 @1 {2 }: c% H& tend
5 B; y! [0 p$ q) j
3 R* K; o" i+ q. K, |2 ?! F6 oto setup-turtles 4 I3 y8 t+ _  R8 I" E6 I
set shape "person"
: G0 E# W4 Q4 J! T/ H$ ^4 n% Vsetxy random-xcor random-ycor
; {7 @) z  t; I4 P3 q  Iset trade-record-one []
; r% x) s; ?/ \/ N- p" J
: \) [  p2 h2 C0 F1 h5 w. E
set trade-record-all n-values people [(list (? + 1) 0 0)]
6 Y% q+ o7 x0 P! k6 ?, j/ N
" k& W3 w$ E+ p; W
set trade-record-current []0 V/ \  \2 B; N' `( ]
set credibility-receive []5 t6 F  s; L; a( W
set local-reputation 0.5
4 }) Y) {2 K% w- cset neighbor-total 0: L9 I6 d* |- ]$ i
set trade-times-total 0- X' E2 t% K4 {( q' t: s: ~( A
set trade-money-total 0% L& p, i7 o' c9 _
set customer nobody, [' L& {/ b5 E2 D% n
set credibility-all n-values people [creat-credibility]
( N/ F  o  z2 Y/ Iset credibility n-values people [-1], ]: M7 C7 N2 x& l- e
get-color
! A. ^3 ]) C5 z! j* t- N" B4 t4 ?+ |

; ]' b- q, K3 Z/ U; nend
) C" ~* j& e: y; [2 W0 F4 _
* |0 z; p1 w3 B+ C0 {to-report creat-credibility( t/ O: v% M. }8 K) R3 U
report n-values people [0.5]/ k! r' [9 E, j. X5 k
end, y3 ^" Z; l2 Y2 \6 m4 O- n" X
. u* ?3 Q! a3 A, D3 K
to setup-plots: F4 i: l) e2 m" C/ ^
8 L: }! {; m( K, ]3 X' G
set xmax 30

6 o4 C/ y7 L/ x6 J- h* e5 ~' N3 a" @
, j4 \& A/ I. n* xset ymax 1.0
- k4 ]# Y+ E+ v6 B$ e! Q' d+ ?4 Q6 z
) r$ F0 h0 ?5 S& c' e* j
clear-all-plots
6 p, T* g/ s9 l: \7 T( _+ Y
2 r8 z2 v( A; U; R" V5 b
setup-plot1
$ W. W* ]! `( {5 S
# B! i( n9 [! o( N7 f
setup-plot2

9 A! Z  \: A, X* r& @+ _0 \3 n0 q3 D" i- I
setup-plot3
# D+ ~& c# l0 u1 E/ F% ?7 |& K
end% D6 U6 U. `. |2 o$ C9 ?  |' ?
$ g' ^& |# J( d7 K
;;run time procedures7 b9 o8 r5 _4 ?% x$ L# n
3 ?: m! e. Q9 h  j7 F9 Z0 h( _
to go" ?* `- z  p# R# O0 x" }. V4 h

+ s9 b% U" Q1 W! |  h1 A0 iask turtles [do-business]

( U& [8 \& C3 K/ Y, q( v4 nend
% F+ U) K9 E# b& p1 r) @5 W$ C4 A% k9 m* ?  x
to do-business & \3 X; U& M$ @* m; U. N7 q6 ^
3 [  k. t7 R, ?' n5 J

; Q$ L$ o! F/ _1 `1 ~$ F+ hrt random 360
3 U4 N  E" D2 m2 D+ T3 P
  |& y# O- b5 w
fd 1

3 J% g$ o8 H: j& |9 P7 ]  F# a2 C+ U# b$ j6 B) d: Z6 r4 r
ifelse(other turtles-here != nobody)[
% y8 ~$ p$ F  v2 Z: |, q
! k5 c9 l. {5 S  x; _1 U
set customer one-of other turtles-here

: s9 G) F  Q& g7 r' r- X
0 Q1 j( m3 {$ u: O3 e' c5 C3 q;; set [customer] of customer myself
5 F4 N1 x, |0 U. ?: _

! v5 o1 o& F0 C+ ^( `set [trade-record-one] of self item (([who] of customer) - 1). y8 @5 e# g- ?
[trade-record-all]of self. c7 Q5 }/ b/ x  N$ B8 @
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
4 v6 p) D. l0 y
) U; {( ?/ ^* K. k1 D
set [trade-record-one] of customer item (([who] of self) - 1)
, l7 \* `. Z7 E( v! E  R& B! v2 g) H% L[trade-record-all]of customer

: ?. o8 X7 Z' _( t( c  {/ s2 a
# G3 G- k# c+ A" b4 J/ Yset [trade-record-one-len] of self length [trade-record-one] of self

5 Y( i$ N# Y# W
3 Y+ s% K  w6 Q  Y- Y. H4 D( l" Q- Eset trade-record-current( list (timer) (random money-upper-limit))

1 V5 `! u3 E8 ^) ^! J" P, ^1 w( P& R9 x0 D+ k
ask self [do-trust]
4 x7 v. V) H7 K6 J" a;;
先求ij的信任度
6 k8 ~# N" B5 l4 j0 F( z8 R3 R8 i
9 @/ {* y0 o/ r: g( eif ([trust-ok] of self)
8 A$ Z5 k8 ^: _' x0 |;;
根据ij的信任度来决定是否与j进行交易[
9 x% `6 J* I5 |- A! a3 i, Z  Bask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
- b2 v! Y& M( W. C1 W# q! m3 \& @
[

: m& W" [; z6 q. F) h- k6 g: Q! ?( T3 x  I$ n! J+ I
do-trade

$ q) t$ t- P. c0 }
5 ]4 y' y, ~  I/ Q2 _+ C1 w# B# Wupdate-credibility-ijl

  K9 y: E& U6 w  R1 T5 ]0 K( K* z- ^7 R% V: A
update-credibility-list- E. A5 ?8 S; T" Z2 _6 j2 D) D0 V2 l

' V: K) m3 c2 I+ Q8 v! Y2 k0 w0 o! I- p! Z- u4 L
update-global-reputation-list
1 V: m6 d4 c* s$ ^7 L
( S5 y" I; n. I& `8 w* k
poll-class
1 J& c) V7 g- }' J% o' X
& G. n) e% ^$ W
get-color
0 U9 S2 X# ~8 d$ g( ]% Q( V

/ }+ ~2 }0 h  s0 V# C8 }# E3 j]]
# s, M& U$ z) \/ M! I  \5 D
8 c0 K8 R2 l- m;;
如果所得的信任度满足条件,则进行交易$ r" `. f7 @" u5 {  ]
: Z* Y- t  F4 S: ?' a
[
1 j; B4 d  w, l! d
6 C5 G  x) Y* a* K+ i
rt random 360
. `7 |7 _3 }( F6 h( I& y) B
1 {. y* C; L8 K2 {/ N
fd 1

* ^% l. t$ ]8 ?8 _  Y0 l) k6 m# O8 r% e8 m. J5 S: C' E% w! N" e
]
% S/ N3 A0 y+ y* l7 A

, N! E8 O7 V) |! A3 ^% W- bend
0 e0 P( G6 l! S- x$ q$ O$ c
) s# a" Q4 H+ ^9 r# ]# c4 ~* u$ H
to do-trust % r6 C3 l$ e0 s
set trust-ok False
# M' r1 j. V; e) R) v( l3 [; w" ^9 P* t9 b' a4 D. f) q9 C- i' \

$ F# t% S! {5 ?% flet max-trade-times 0' X: A- ]8 ^" v
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
' Q  Q. q& C" G3 \  A- tlet max-trade-money 0
+ Q, B0 w. M4 Cforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]3 H0 X( r( r! E# t( k0 Z
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
9 \: f# m5 H" |6 X2 n
  L3 s4 x/ @- h, V
" c4 \$ Y/ P2 O5 w0 M$ H7 d( R7 Z+ t
get-global-proportion3 [; g$ z+ q! i+ K% @
let trust-value
* m  c6 X% }2 f! h( f* _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)

3 z2 Z: C5 X. t& _9 v8 sif(trust-value > trade-trust-value)4 j* |7 I9 M, a2 B  _
[set trust-ok true]% s3 R; Z/ n9 A4 X3 F
end# R7 z- X) r, C2 _& S

: v+ k4 c4 ~4 C1 C) jto get-global-proportion% g5 r1 t- [. V4 u% E! o
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3), U3 Y  I8 h0 Y: D" {
[set global-proportion 0]
+ D# G, X" t; g& g9 X[let i 0: Y1 p& Z! A" X" L
let sum-money 0. G# U3 O/ V) E4 E( {4 s( e
while[ i < people]5 M9 c! s$ _' j% P& f
[
0 z! P2 g/ `' k- Jif( length (item i
. N: e* Y1 l' K- e[trade-record-all] of customer) > 3 )
" U/ \% w# k6 a2 q: \2 t
[7 T+ e* H7 w; U1 H
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)): e4 T) V+ r( y) W6 D% d- d' W
]: P2 M7 h9 y1 g5 T# d- b) L. J! `
]
3 K, _! i8 w# P3 M0 L6 o: Tlet j 0
  u3 l. ~0 D7 [) X. ulet note 0, w! W! J! t' D* M
while[ j < people]
  L/ E4 g1 {4 v- K* ^8 L- d[% V0 {. q$ W7 e2 ]7 B6 ~+ X7 C$ G( Y
if( length (item i
0 S' ]) H; L# {4 j/ n! Y[trade-record-all] of customer) > 3 )
5 e( u& m$ t5 u% n7 r9 V7 u
[- e2 F( t, l7 g; ^: W
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)1 G, m9 v! q$ J' @8 T" O" B
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
/ A* Q& Z% I( V" w% F[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
5 ]0 A3 t4 T5 d( D% h+ I& D]6 P! P5 r6 w; ?- O0 k
]
3 h/ [0 G' x+ \$ u5 I( K  t4 t# h# ?7 Fset global-proportion note
$ D4 r) x4 i4 a) K& I+ U. o7 |]
1 X: u! {2 g6 L5 g4 lend6 ^% c# x) o" A6 c
  m' q# W+ \0 z" r& n2 Q
to do-trade+ G9 o) q8 y9 [/ K$ _) ?  N
;;
这个过程实际上是给双方作出评价的过程4 y& b% z* G; G9 A4 Y  u! t# G, w
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价& S$ ^- ^4 x3 H1 T5 v5 Y4 L
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价% o4 \# Z( T) k6 W/ C" E5 S
set trade-record-current lput(timer) trade-record-current+ i# C% K/ }, z! _, p2 n
;;
评价时间
$ u+ a2 N- i' B3 oask myself [
8 M# u9 ?1 l5 D& E# G% P6 Rupdate-local-reputation
/ k- n! H2 p, H% L1 _' x/ |( }- qset trade-record-current lput([local-reputation] of myself) trade-record-current
: K+ u' g/ R- u]
4 {) N/ X5 I. E( xset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
5 ~# K; o! m* b: \* @5 P2 H;;
将此次交易的记录加入到trade-record-one# Z9 z( {, j6 L3 W
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)3 `& l' m6 d+ w4 z
let note (item 2 trade-record-current ): D0 N- w6 I1 }2 {" O
set trade-record-current1 h! F/ o9 V7 {  G
(replace-item 2 trade-record-current (item 3 trade-record-current))
: K% P. ~: k1 O$ T+ ~! c# Q, _
set trade-record-current
" e2 N8 H1 K+ C) ](replace-item 3 trade-record-current note)
- g) D8 |7 N2 y: l1 ?$ m1 B% v* h* B& g* M/ w* [8 c

- e+ e8 V2 W; }$ |% Aask customer [
' B5 |7 y& A) `) H5 tupdate-local-reputation
6 g$ {1 y0 O! `. P- y! G: R8 R# X) Uset trade-record-current! v, S" \: Y3 n3 g
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

) p! J! V: m$ ~( ]. N5 O]  \% z7 k3 W. _* C8 I$ C9 _9 s7 L

# c1 L2 F5 y8 Y7 c0 t+ i
9 }; p: K8 t* G' x6 V
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
$ K2 V* C% O" S5 X$ z3 b
" O% @6 ^6 }8 Y. d
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
# T' e2 T" c  W. C  A, O;;
将此次交易的记录加入到customertrade-record-all" [2 ~7 `1 w! ]- y
end
% S. G8 U; t$ `. N1 \! E/ t
! R5 q- {/ j& M- Xto update-local-reputation( w. I0 [1 I4 Y8 V) g# ~
set [trade-record-one-len] of myself length [trade-record-one] of myself
2 m/ k3 a; v  d) O
+ @8 P) `) X' f6 ]
2 S- Q: Y6 L% c& H, C/ ?8 H;;if [trade-record-one-len] of myself > 3
5 W2 J3 L& |' A
update-neighbor-total
4 A( @$ a& t$ t) K& N4 e;;
更新邻居节点的数目,在此进行
+ N( q' }& U# I% ~8 ?let i 3
0 J8 x$ E0 }" F; `1 }let sum-time 0
0 N* H6 I, `3 \# Y3 {while[i < [trade-record-one-len] of myself]1 T, j: r- Q/ k( s6 V0 a0 ~$ ~$ W
[& b$ Q( C7 G5 y/ X% ]2 X  a
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )/ b0 q1 \# S" `. m- {
set i
/ Q  s, c  p2 B  L# C2 A' c( i + 1)

0 d, l- @& L5 C; U, E]. f* K8 ]+ v5 ?. ]& I' T+ i
let j 36 e' x5 @2 F' Z4 F6 R
let sum-money 0
- `% O8 K; j' uwhile[j < [trade-record-one-len] of myself]
- W5 ?! T0 J! i8 e# q[
( {0 J) d1 ?2 L& ~, J+ Bset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
/ w. j% i) `: E0 _7 K) fset j
! w) G$ L8 I2 r8 I- `! n( j + 1)
. s7 Z. y. P$ Q8 K7 f
]
  I- I% Q' f- C0 `$ _let k 3
9 c: c* y* f- Clet power 0  {( x1 _& V7 w+ o" B( J, I
let local 04 N! Q! [! D9 _3 B0 K9 D% A8 o
while [k <[trade-record-one-len] of myself]
9 O$ r5 I% [0 M3 m3 p2 ]  _[
9 s! l1 t6 _" [9 t( J) U" Yset 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) ! j0 y# ^$ ^' g) X& R% |
set k (k + 1)
! H; F/ x1 v9 O: n  M1 n2 {9 c& a]7 m  g8 E) X0 `0 q
set [local-reputation] of myself (local)9 J. Q' W7 A3 I3 q5 F6 \' d6 a
end
" W6 I% d. P$ W5 S0 P; Z3 S0 L: Z! z2 B: g/ o; L. h6 [0 D
to update-neighbor-total# k  ]! m( t* p- Z& {+ e
0 w2 y$ _. C, r2 }
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
5 {8 ]9 j5 d0 s2 _% Y) ]. {4 e, x! N( _
6 u$ |  w# O4 P+ q: Z% c
end
) m, @; g' c8 [+ H7 z  W1 u. `  b! b2 [: ]; q
to update-credibility-ijl / d* _4 S+ A3 i  I) I0 T
/ p+ _" L! M' o$ }9 Y
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。' }! i* U: A; @7 w4 M7 r2 n
let l 0% E1 ?+ K: F) n0 v; E0 E; E
while[ l < people ]1 D: {5 l/ Y" G( \# X7 ]5 W
;;
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
* c( n$ I# M: x& u' E  J[  Y3 n$ I& }; X
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)1 I: l9 i3 X( d3 @* I; @$ }* M, y
if (trade-record-one-j-l-len > 3); G7 y$ A( A  U: u& b& j- ~6 C
[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" `$ b/ \) U/ }1 x% {
let i 3
! E4 P5 \( f% S6 o  k  `) |1 Clet sum-time 0
5 X. U5 H1 G7 V2 x$ o1 cwhile[i < trade-record-one-len]
) Z2 f4 Q4 V, {[. l" {8 g! u+ O; o7 m
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )5 \' X4 `- n. z' M
set i
, p, x9 g" V, V/ r* P& Z( i + 1)
# r+ U2 R, p  W1 i' ~
]' O! s+ _1 l# I9 M/ S' W
let credibility-i-j-l 0
  V6 E' E4 _% r+ E;;i
评价(jjl的评价)
0 h4 r7 ~/ w% dlet j 3# P3 m8 K' R3 N0 k3 D
let k 48 c* Z+ P1 o: o, J
while[j < trade-record-one-len]; E( V# M  g: g9 C5 c' _
[: [% }$ u7 N' ]( _
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$ C1 U! u" \8 Y) j
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)# z! j- }" C0 j5 T& q3 h, G
set j. a$ C( j/ w' K! D1 h5 s8 O' J
( j + 1)

1 {$ }$ [% p7 Q( @  P# j]7 o) x( X6 U( q# _7 e& f
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 R' ?2 L- [, U$ S0 I9 W: _

$ x* Z/ ?2 c6 l$ P3 M) o7 a! i9 ^

5 T* n, z' G9 }' t6 d+ r$ k0 s( {+ @5 v4 jlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
  V* }8 V( ]9 i; x" K8 ]2 X) D;;
及时更新il的评价质量的评价, y/ j! |$ U2 e! W" s
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
) z) q& ~5 J; \$ ?! L4 mset l (l + 1)& I- V, H$ k  L0 }0 z3 g5 K
]7 B* D. J, `# j, U1 \
end
  g6 n3 W! \/ O
: y7 J9 f8 w0 f" @; ~, |( @: ]to update-credibility-list
8 p2 z$ s; z; Z' l+ b9 \let i 0# E& D$ c6 t* C8 G
while[i < people]
" p& j+ P# }# G5 R[
/ t* s( i8 Y; t8 N8 |# Slet j 09 D7 r" _% F9 O+ h+ n( |: w
let note 0
9 h: J3 e( f5 p1 o$ ^let k 05 |& n+ q) [9 T6 A
;;
计作出过评价的邻居节点的数目
6 K: m. i0 ^  q7 S  n: V5 Jwhile[j < people]
5 g' t4 {  a6 T& u' a/ \; l; H[
, K; v% V  t1 d. |  Y( X" Kif (item j( [credibility] of turtle (i + 1)) != -1)  @7 ~' d& b# R) ~9 W+ i
;;
判断是否给本turtle的评价质量做出过评价的节点
2 F9 ~, Y+ p% c[set note (note + item j ([credibility]of turtle (i + 1)))9 q! T% Y. h! ?! Q) t* k
;;*(exp (-(people - 2)))/(people - 2))]
+ P6 ?4 j' ~1 H' j9 q2 G
set k (k + 1)
: D- L) g6 ~' \" c1 _3 i]- D" P7 U7 V5 _& X- Q" [5 T
set j (j + 1)
: W3 I9 g  \1 d0 H]- X6 \2 @* Z  a/ `' A
set note (note *(exp (- (1 / k)))/ k)7 v* O5 h* k# s4 C) F% Y% {$ g' b
set credibility-list (replace-item i credibility-list note)
: x6 j! K) s* z) Cset i (i + 1)1 X& K& t) _' ?5 t' A9 e$ G
]
4 U1 \! a6 F7 _. iend! G- `( U% p' \

7 \8 t8 J6 S; z5 X: F6 V! fto update-global-reputation-list
, R  `; H& d8 k% X: q( glet j 0
7 l+ C: m, x8 k: k9 t% H) Gwhile[j < people]
. V/ D; f5 T! t) g$ i[
  T4 g0 q/ H4 N' [let new 0- i5 b2 Z4 {. h9 x% P4 v) l5 `
;;
暂存新的一个全局声誉! ~$ r) S, r' a6 z4 k# ?, h
let i 0' h. u0 v8 W+ N7 Y! I3 W3 b
let sum-money 0
3 K/ y# l! ^' D! z  m+ N" \let credibility-money 0
7 K* Q6 W1 s, G9 F* l8 twhile [i < people]( R7 N# t2 w$ D; @) d) @$ V
[
. c! w1 w% z! _) Aset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
$ Z- s  b+ B. I5 a/ R/ Qset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
# f2 \0 q5 o4 n! `6 Z$ uset i (i + 1)
7 b4 o' N- X) E& ^) s& E( M7 {8 H]( m! \. Y6 T2 r$ C4 j+ y7 x8 B# I
let k 0, Q3 C1 q, \+ ]% }7 b
let new1 0
( U- G, {1 F6 h" e- iwhile [k < people]
8 ]+ e+ ^8 |+ C9 U[7 g  {8 @: n( k) O* U8 ~0 |, l. M6 |
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 c" ~; v" n, Kset k (k + 1)# X$ ]$ d7 \9 M" ^% q& N
]4 y# y. T& e& M6 H% e
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) $ _% ^( a9 z; G* u
set global-reputation-list (replace-item j global-reputation-list new)8 I; d  I% D0 ]$ d; H5 b! }- S
set j (j + 1)5 j4 ^2 L' |1 P1 Y+ o# c; S- u" e' }
]
. I7 U" Y" D5 p/ D  Rend
( D7 z& ]# H# N. G8 C0 q6 R
& ?& ]/ W2 f5 Z! ]" t- T; i6 o5 j* s) |! ]8 c+ B: \0 [

4 I/ j  X" L0 W! O# tto get-color
+ ~4 `6 G1 z6 U+ Q/ {' J9 o6 P- _6 R, k* s8 c
set color blue

! B/ F8 e0 E8 P6 Z- C4 Jend5 M- B! Y, T- D5 P

1 [) e, D" _$ v' S7 O, Bto poll-class, @% Q2 u, X, n9 b" a# `! _  i
end" X' w+ x2 m: O/ t% |
! B/ I! B; e# f8 |; u0 E# x& r3 T# C
to setup-plot1
6 I3 D( D  e  W" D! {# n# k) D2 L+ g- J
set-current-plot "Trends-of-Local-reputation"

- S3 J2 i# g9 d  i$ l! {  ^  Q" @8 C1 u6 A* [; P* K- w- B
set-plot-x-range 0 xmax

% B+ k& C2 g' b! v9 K+ J6 G2 g
# z" a; `, Q5 P& ~" ~/ hset-plot-y-range 0.0 ymax
% p& I2 o( m  F) E7 s0 B
end
6 ]* S- I2 P6 j3 d/ f& ~2 a* i
. I& E: Y6 }* @to setup-plot2" W+ g  x6 s; Q. I. y$ ?9 _

. G) @4 b  D4 P( a: y4 n8 ~set-current-plot "Trends-of-global-reputation"
( o  r& z6 Z' K2 H: v

$ s7 t& W/ R( X! X9 bset-plot-x-range 0 xmax
2 _* c' H  `7 Z7 T1 i3 t. F
# m2 c3 q! ^* ?0 ?- [7 t
set-plot-y-range 0.0 ymax

, t3 D7 s& K: kend
- v. ^3 A* U$ o8 a
0 m" e4 b( y% b& lto setup-plot3' l% q1 D0 F1 K" q! F

6 l, e' L% E4 u9 |9 M# }, X0 A: I* Zset-current-plot "Trends-of-credibility"

+ j' B* l: u- l& ]
" w$ z* ]3 S- A. Eset-plot-x-range 0 xmax

! q/ l6 F8 L$ D* C4 v0 b+ y$ o( x; b. v
( u# q; G6 k7 m- @4 L! X8 i) Rset-plot-y-range 0.0 ymax
& H/ R/ K4 P% X0 X& |8 G
end
0 \3 T1 i7 A6 u8 _5 R7 h7 q! p% L$ U& W
to do-plots) n* N7 A  K2 R3 f" T4 P2 s  J6 K
set-current-plot "Trends-of-Local-reputation"
, ?$ h+ {& E& l" Mset-current-plot-pen "Honest service"7 w$ V+ T& p* u" T- v6 f' d; |
end
* w4 @# x1 D# _! B& g5 v$ a7 K( W) B# t. G
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

本帖子中包含更多资源

您需要 登录 才可以下载或查看,没有帐号?注册

x
发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.1 ~4 I, ~: H4 ~5 [* h0 J. ^
; |- [0 j$ e& T
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, 2025-12-10 23:33 , Processed in 0.018197 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