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: 11226|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:
5 K. U& w8 W) c/ `- uto do-business ) I2 X" {, R5 N  j: R
rt random 360
4 z5 i5 H/ j  U$ X fd 1+ p7 i! W+ ?) ^2 s, w5 C1 r1 S& q
ifelse(other turtles-here != nobody)[% P6 g, _# V  p6 I! z( [  d& j
   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.% D. B- V- q2 U% j: `
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ( z9 W1 ?" J& J$ M) h" G
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer6 l! L& r$ k, C8 |, ^
   set [trade-record-one-len] of self length [trade-record-one] of self
  \: W0 @9 m! F6 }% _2 R   set trade-record-current( list (timer) (random money-upper-limit))
4 a0 o8 j3 _2 j' ]
( I8 L! B5 q4 l8 V9 G问题的提示如下:
% q+ {% f- e! I& J+ \. V
$ k) u$ @9 l8 qerror while turtle 50 running OF in procedure DO-BUSINESS
8 W* v) W$ ^& L) K5 j) u  called by procedure GO
2 U! D7 p$ W' f1 r* t$ zOF expected input to be a turtle agentset or turtle but got NOBODY instead.0 I. L! S9 a3 T+ S: U; S; g
(halted running of go)
: p/ t, p5 A- j  V$ c
+ B; P+ y4 F6 }1 Y: W: J4 b1 D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~~+ q1 \0 P* B/ q7 Q) H
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7 U  g& ]1 ~) h: q& Z
globals[# u+ U" Z# _1 N& s
xmax
) k0 @9 L2 Q2 u8 `  }ymax2 k  D0 ?& c, ?% \
global-reputation-list( w3 ^+ C# i9 J
% u$ F. _& ]8 X8 ~# {- w1 t7 S; O
;;
每一个turtle的全局声誉都存在此LIST$ ~6 c5 b4 i8 a
credibility-list
, ?4 c: B0 Z" T0 B+ k;;
每一个turtle的评价可信度
+ N$ X4 U! v' {* C1 l* C. vhonest-service
1 g2 Z0 l/ l8 eunhonest-service
' d4 G, J; E% toscillation
. w% Q1 T" E5 q2 ?rand-dynamic
- n# K  i1 {9 R. `" ]  s) G]3 f/ j5 `$ u4 O' j' x. l. `! c7 C' Y
( q: B* v1 l0 T) n/ V; y. Y
turtles-own[! E! f9 s! s! x( d8 }
trade-record-all  e  R: r9 e- B% \" `, Q9 t
;;a list of lists,
trade-record-one组成" t& K, {& O7 T$ ~& S& n2 j* n
trade-record-one( u2 g  S3 ~" I8 e( p
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录+ n0 ]" k; x4 k9 V- B2 I- g
5 w: g0 w3 p4 a" v
;;[
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]]
) s; Z! c) {: `8 {. V1 Strade-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]
0 {, B9 A' w3 y& Y6 [1 Lcredibility-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. Z  z& }& \! I( R; a; f
neighbor-total4 C, l& F+ l9 r8 ?7 m
;;
记录该turtle的邻居节点的数目! \$ L5 s, b8 B  z3 e7 U
trade-time
4 h: I4 I( {. B5 N4 L4 z: X;;
当前发生交易的turtle的交易时间, c8 B' H: X; O
appraise-give
% d0 j6 o3 R9 t;;
当前发生交易时给出的评价
' B$ y# q0 R- D; v1 X0 e& e6 U8 Yappraise-receive
5 `% \% }) d0 i, P' W1 R6 f2 G& n4 U! g; G;;
当前发生交易时收到的评价8 Q; z/ z. F5 c5 B2 N! @
appraise-time
/ H* L2 W- z2 E3 Q( \;;
当前发生交易时的评价时间
$ k* s, Q1 f% \; g; g: _& mlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉9 E: ^$ H8 \8 `1 H
trade-times-total# `3 \# E6 Q  J: j7 U  m5 a. @/ i
;;
与当前turtle的交易总次数" Z, P( d3 B) p6 e8 S+ ?% W/ p( K4 n$ O
trade-money-total
' {' ?! }& f$ v- p! q9 [9 C7 _;;
与当前turtle的交易总金额& T; H- o% ?' ]$ N
local-reputation
" ?8 v* A$ l5 H1 ~- _( A* {$ Zglobal-reputation
+ t8 e  o3 U, c& b4 c9 n- m8 ucredibility+ S2 W7 {; x! s& V) A4 w; V
;;
评价可信度,每次交易后都需要更新
) Y, P. H; }# {credibility-all4 _5 }. _3 S; Q- G, h
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据: w+ o- G! i) I/ }

1 e6 Q: K( B: R5 _$ 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$ ]- ~) X5 Y  W: I4 |3 j
credibility-one7 }9 g! f; Y! n# E: `' y; |; \
;;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
& k! Q8 z, m* U+ M3 }global-proportion% Q; X9 ?3 m/ X8 e& a: {& [
customer
( F& h0 a4 C- R! @' K  ccustomer-no) b: f# a$ A4 l; y6 S( H
trust-ok
, E6 |- I; i) H7 @# {trade-record-one-len;;trade-record-one的长度
4 i7 }+ Z0 |4 ~2 I. ~]2 l) j7 x; ^( {9 C% G; F  P# W
9 M2 `' q) p) O% U' S0 d
;;setup procedure
+ C9 Q/ Z. i: f4 ~. v+ L
4 \4 a* X8 ~, G' H& Fto setup
9 Q1 d9 C$ }9 u9 z) `! g) T$ v1 I& k. K9 @  L
ca

8 Y8 B7 _+ |$ E. X5 \5 x1 j2 m; `- k. v4 x) g# c# _6 F
initialize-settings
2 a& ]# T9 ~8 v& m0 F% m1 L
: M! L/ T8 \' D& r  n( _
crt people [setup-turtles]

7 B% M2 D* W8 Q! D+ Y- ~. |
/ n  b0 c8 V- ^reset-timer

% e' E2 p0 N$ z- M( P6 R" j. X* ]3 g# L$ W6 R" Z5 f/ h2 y
poll-class

: ?5 o/ E9 |* ?- N& J. S" J- ?% e$ G( o; A$ z# o
setup-plots
; G  b! S+ d, R. H6 _! }; ^% V

4 b* e# h5 Y- j- \# x' ^& ]: Odo-plots

) F  g, c' R7 c' X8 Lend: r0 o6 l0 E6 E- r0 ?
% T( J% D8 I; X- _4 n
to initialize-settings" g  C" f  h/ o
5 ]" `9 V( f, N* I# W# s
set global-reputation-list []
) {& R' q. X0 z9 B( w
" X3 u1 _7 v  G& Y' u
set credibility-list n-values people [0.5]
$ _! Y" }) l! y
* U1 g. m& n6 F: }; J3 _+ k! ~
set honest-service 0
1 R6 M6 c0 A  H# l" f, i

/ C( K1 A0 Y, j+ H( _% D) iset unhonest-service 0

# @4 G) d& R$ ?9 M4 |' V* e) S* p: ?
set oscillation 0

( D8 h$ M/ V* b5 h  `4 q+ f! E9 }1 ]( K3 K. T  s$ l- q5 w9 M
set rand-dynamic 0
. h8 t8 l; X9 j, f$ D3 r& f, g9 m
end, T) W4 P" h! X) u% c6 a
$ \0 _) G3 i' Z/ Y0 D" Y
to setup-turtles 1 k5 C4 A9 e( b3 f- \( A. Z- B
set shape "person"
0 b6 w  I+ r9 H3 D# o0 k0 esetxy random-xcor random-ycor( k. y6 [2 ^3 M
set trade-record-one []$ W* Y; r% [# u: h' H
$ w, ~2 _& x' u( U
set trade-record-all n-values people [(list (? + 1) 0 0)]
9 I9 {8 Z1 r+ k' g% A! R9 D

. r# ?! f. @" d4 Lset trade-record-current []- [6 l: P  l6 e- y4 H- ~( L
set credibility-receive []) R$ d# u  h4 p( z6 c
set local-reputation 0.5; Q9 N& ^) o7 ?2 O" I& t, B
set neighbor-total 0
; f0 p' |  C+ R; _1 Nset trade-times-total 0" |; f/ `- x3 P6 ~1 G) U- \- k
set trade-money-total 0! M4 I) H. u' P% f  j" m! ?
set customer nobody! ]+ H8 l$ C% d0 o% Z4 e  A
set credibility-all n-values people [creat-credibility]0 E- H  R1 g+ A% e
set credibility n-values people [-1]4 Q, |) Z- e' N3 a, c1 C
get-color( R+ L" ~! U5 ^2 l* ]; ^+ G

1 W9 t/ V+ W! B+ iend
& I) b5 v# Q: V; s
8 l+ C$ W. o% t7 P6 I1 s2 x1 Eto-report creat-credibility" y, t' N: m# `! c5 Q8 I
report n-values people [0.5]  ~( X/ V9 Z7 ^, U: N" a2 k
end
) F" g( r8 A1 I: I# w0 R# N1 Z, O
1 x/ g, @( M: M3 m& o4 Pto setup-plots
3 n3 Z# p3 o2 J3 {, m$ O# ^! J+ q9 c: w, V% W2 q
set xmax 30

8 j3 [. Q) ~; ^. s; q( `: W/ L
, n! e, I; S( i0 }8 S+ |set ymax 1.0
( I. i  o4 z1 j& V

4 W3 u+ `. H& z& Xclear-all-plots

! R; p4 Z2 C8 E; ?% `! i
. Z: l. T$ t6 }) U) ysetup-plot1
4 F/ L, c4 Z! @& @$ z/ n1 Y& u

0 U/ b# }; D* H0 W1 n* ~setup-plot2

3 B9 O. R' T4 ~
$ e' ?+ g! ]- V6 X- y6 gsetup-plot3

/ h# D6 ], p; z5 R6 D( a  l5 ?: jend: S) b" G8 P$ q% g% N8 p5 q4 z  W9 ~
# N  C/ z! V* m0 N# T* C6 C
;;run time procedures
" T5 t+ _4 i0 D) w9 ^% A
  y" r' \) `& S# s  X4 Kto go
( D' k& j; S# `! N+ S+ ]6 E5 H6 y% e  l$ W* Q
ask turtles [do-business]

& x# p; D: C3 T( y4 x% Z4 [+ O: {end
. {9 }1 h/ o* \; |
, o5 Y5 j. S$ g& k% Q' L( Tto do-business & k" N; X4 X; b8 g: h, ^9 n
6 ^& p: Z* j8 G$ Z  }& r& ?* o
2 h$ |$ w* z/ v- E1 m5 d
rt random 360

& c/ O) ]: d6 ^
& b, j% S  S- B, C. P+ Z5 x0 Ifd 1
0 L& s$ e# b& V+ `6 s2 @

' [; P9 c6 _6 j! K7 r. A) L+ ?. _1 [ifelse(other turtles-here != nobody)[

/ Y+ M) w. E" N# N) m$ b
4 y9 S# s) c3 Sset customer one-of other turtles-here

+ u8 {- H" ^, V& k6 x" u, A& c
, e% v+ r' O6 M& m% p, _& \3 ?;; set [customer] of customer myself

8 S& ~' R: D7 a' b6 i5 M8 b& q  ?% a6 Z9 S/ M* K- c( i0 h( x8 W4 Y
set [trade-record-one] of self item (([who] of customer) - 1)- K- U& g1 \# R
[trade-record-all]of self/ I# E. K2 L0 o) J- p$ i
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
- g, c4 u3 X( e% h- L
- c6 i3 @6 `8 ]$ }  d+ c" D  Y
set [trade-record-one] of customer item (([who] of self) - 1)
2 Y8 Z/ ]7 Z1 K) @7 Z[trade-record-all]of customer

% V1 ~8 q% R$ `1 t+ B  _" i* E4 y: |- Z+ M1 S) l5 R# g& p- M% J* }
set [trade-record-one-len] of self length [trade-record-one] of self
5 n1 C! E  Z, Q' E! B

1 c& q, S' w& {set trade-record-current( list (timer) (random money-upper-limit))
! p$ Q" S5 ]9 S# B2 K+ O6 i2 c
, B) C8 z* P4 I: P1 \% y
ask self [do-trust]7 h& y+ h7 C. i" i& O
;;
先求ij的信任度
& m* m0 u+ G9 f* u3 h
! [& C# a2 h+ |. l0 hif ([trust-ok] of self)
( V/ o: S! v4 u3 [+ G9 C;;
根据ij的信任度来决定是否与j进行交易[
$ P( D# M7 d2 J9 J7 f/ k( fask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
. h. z9 X+ I5 Z
. n% P$ A) C4 U* U) c2 ^[
' |( d2 K2 }4 ^3 S3 X
( k4 @  J* Y' j/ _9 E- X
do-trade

, B$ m! u3 K1 w" n( d
* x5 P# m6 g' H; E" F6 R( |update-credibility-ijl

. R2 _0 X( x; I7 V' h0 K, ^" i* |/ z* w% I- N& K* W  X
update-credibility-list
3 N' A& r1 B2 S8 P0 e
' T# J7 Z7 }9 C4 E) b

) ]* [6 B' p( c" a8 v7 Z. B6 cupdate-global-reputation-list

0 Q; v1 G) Q/ B) H( b: u' l0 S3 o! T+ l5 ~- `: A
poll-class
+ o3 O$ o# b2 Q# C  L3 y

) F+ A" B4 I, O0 V# U; cget-color

: f4 H7 N9 a; q+ t! C3 a: H* y2 E; o/ E  v+ ^9 ^1 T
]]+ V* O* n3 U+ W7 n, d( Z# T

! q6 g! m! [+ X- r: o+ c9 ~) ?0 Y) d;;
如果所得的信任度满足条件,则进行交易$ C% Y$ K) ]. n+ ]% G6 }1 F8 `
% v# r, y! H; ~* D# J6 M- W
[
3 R4 E1 H+ x' r+ p! D

! x4 G& B8 _% Q6 x& yrt random 360
4 \2 _$ A! x+ ]$ v
  C! Q) E0 V: B6 T% F
fd 1

& e4 }+ c& G$ u0 |
- P: U0 z- Z0 z2 D5 R]

2 V& j5 Z# V3 v( Z. ?" d' b' e: N1 k4 I* h3 y2 ?! _0 @+ ?
end

: i% U" A3 d) R6 G! e) N1 {% W8 f7 q
to do-trust   l7 ^4 v0 S& D! {
set trust-ok False
! {4 D" F2 h$ |5 {1 s! R0 {. T  ~+ U! F6 d6 o+ L8 }' n
+ k9 V% U! T% v, n
let max-trade-times 00 T" F  Q2 p0 X# Z2 F# r
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]% x, d0 ^1 w3 l2 _" G5 h
let max-trade-money 0  H+ O( ~1 U* E3 U$ j( O; b4 C
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
' l5 ~/ \) ]5 B  i+ K% M3 alet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))5 n2 F  S9 S: Z1 w

6 ]# |2 F. {  h8 J7 V0 z
- i: _+ V' @/ Z6 u
get-global-proportion; R8 V- `: _6 {. h4 _
let trust-value
( b& r3 k3 C8 J9 S- E! llocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

$ p7 j( A0 A; U) w. S$ p7 Zif(trust-value > trade-trust-value)# y5 q- e; ?" o7 e; o
[set trust-ok true]
8 F6 X( k: L3 bend9 Z( R9 x% O8 {

! v% h! R0 x. ^4 Vto get-global-proportion
' {9 M  V2 a- Nifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
, T+ L$ s- p- P- y0 z$ R+ _[set global-proportion 0]/ d8 Y, s+ [2 U! c) y0 i
[let i 01 k9 k: J" u% c, Q# _5 g1 W) e2 q
let sum-money 0) U$ n3 X8 m: T& m; k2 K; z( Z
while[ i < people]
2 m/ D, w" Y; k$ N1 b[
8 o( X, O8 T* Y* J3 d; aif( length (item i
7 U; T  ]4 e) x1 g[trade-record-all] of customer) > 3 )
, F2 ^) {$ u* W5 q$ z3 l5 D
[; q! h* J4 I3 I1 \% H
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))3 h/ E! J$ N; Y! m; P. ^0 I' E
]
. o/ j& v6 e. o0 w! \]
: {8 L  Y0 N) U' L1 Nlet j 0. }4 F; a9 v" F) T3 j. l" r. ?  X. U
let note 0
8 t- z+ t3 _, q+ Z0 ~  Iwhile[ j < people]: z: |- M; K3 L9 r, Z, u
[
8 w- h( _# q6 cif( length (item i
/ d# @/ x4 j5 U0 ][trade-record-all] of customer) > 3 )

% X1 }4 e: c1 M; [. l9 x' \6 k3 P[8 g3 i% X: J- s0 d1 s
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)7 i6 T# p" J3 X9 a! z" c
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]. e2 l6 n4 x' i- h% D4 ^1 Y, r7 U7 Y5 c- }3 b
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]7 ^) T3 ~) |- B% J4 V' C
]
! Y  g  v) O7 _]  [- K9 K$ [( G% I
set global-proportion note& M$ L; }1 c9 C8 ~( i" f9 u6 Q; }
]
: f2 ^& E, W3 m. R" j) D' Rend
' ~2 d) Z! P7 K( G% \; @
( l) D+ D* i2 x& B6 dto do-trade6 N5 {3 `/ N4 L% [' b* u( \, \
;;
这个过程实际上是给双方作出评价的过程" V" p* t' n3 R: H
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
: A" b  o' a+ B/ X- F$ Eset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
/ _8 n+ T7 q5 v# Jset trade-record-current lput(timer) trade-record-current
5 A% _7 w% z. F, l3 @;;
评价时间
7 n8 J" O3 ]" U( l# Kask myself [
' h5 W) N4 W- B$ v: ?update-local-reputation
. u/ J7 g, W- \( j& |2 K/ Pset trade-record-current lput([local-reputation] of myself) trade-record-current
+ r, d  Q- z4 X+ S: n]
- C' s$ V; j$ r8 s8 Rset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
; H: [0 a) F* B+ g8 n;;
将此次交易的记录加入到trade-record-one. d# H3 h! u( ~8 K9 N! e3 J
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)1 G+ f+ [# q7 m
let note (item 2 trade-record-current )6 h8 ~8 S2 Z( p
set trade-record-current* R2 R) d+ P( s
(replace-item 2 trade-record-current (item 3 trade-record-current))

' k6 G: Y4 |5 Z, u/ W! M+ bset trade-record-current
  y4 d3 W) E& n* _(replace-item 3 trade-record-current note)
8 i4 j9 A0 f- M- t) D. Q. Y: G6 S/ m4 s! {8 w; l
4 i/ R# H7 p5 h
ask customer [7 K1 T9 X9 ^0 a
update-local-reputation
7 P) U; h* }$ U. I5 y: {set trade-record-current
: m1 m% P: a/ [) S( N(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
+ n% T2 p! p6 |: q$ i# q7 v: P% z
]
# o+ R/ _9 G+ o) W
' D, F- w) i" X! L% H$ A

2 y6 `( i; w/ `$ k/ q4 X1 Z8 S& o/ Hset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer# d7 }1 o: N/ m* {) J% u
. f7 a/ D8 u, j- u$ X
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))# H1 D: y! p5 `& M. c' {
;;
将此次交易的记录加入到customertrade-record-all6 X- a) w" z7 [1 B$ g3 T( {# W: e
end
/ r; d2 R5 |5 L
# C' \1 Q$ Q2 O4 C% Eto update-local-reputation
$ H# B2 g5 U* |4 _6 `set [trade-record-one-len] of myself length [trade-record-one] of myself
9 Z- T& g2 B: O# {7 S
" W" s# H3 {' m! |0 j% j7 ?% J' A& V1 F, S9 o8 i; a
;;if [trade-record-one-len] of myself > 3

/ n4 L. n9 B2 kupdate-neighbor-total
; a9 A. P/ p# n- T- z;;
更新邻居节点的数目,在此进行1 x! q  B7 r! J
let i 3
' K* q" Q: K: _- x/ Q  s( K/ hlet sum-time 0
" a( q7 ]6 d& A6 T. ?while[i < [trade-record-one-len] of myself]
" ?6 E7 z% i# n( J8 V$ s& f3 R[
+ u$ `4 P. n% g3 ]set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )0 s( e/ V# A% n
set i: `( [! c1 `$ }4 o
( i + 1)
" H8 A8 j2 }, w: y
], i. z4 s9 k. m( M3 Z! P
let j 37 ~% G: O. X7 `$ \3 L
let sum-money 0
4 m, h. s( m( m, t; L+ X) n3 \- L! rwhile[j < [trade-record-one-len] of myself]# ?6 t1 L! h$ l; o  l6 F! l# Q
[
+ U9 e' M: [) L. \" i; V8 j% D2 }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)7 g; C2 c2 q# k0 L2 a" F, i
set j
$ `7 b; s' z( \5 @  S: }/ z( j + 1)

1 \3 r" b( D$ x3 ?( p]+ {; n( [: p9 m1 h& g8 p* ?
let k 3( j$ f; I$ j. I
let power 0  S1 f) M0 H( P2 Y  G7 H% n
let local 01 H) k2 r3 m9 A; w4 f
while [k <[trade-record-one-len] of myself]
% T1 D3 U4 z2 {3 g% n% H[+ @9 j1 M; o% b1 O7 B) i
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)
) P8 y* m. w5 Y4 d* m0 wset k (k + 1)/ O" [( d. m7 R1 c9 g$ o/ ]- o( q1 Y
]3 y) P) N( @5 f8 z- [
set [local-reputation] of myself (local)
8 j; ?& B1 n: |end
  H! [* L0 k) U  V0 D3 S- _* c% M/ @+ V5 p0 r( L0 X
to update-neighbor-total
' O0 q' {' w( G# F! n6 c/ P5 H1 n/ W" T9 B" j7 s! }; P
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]/ d; d; X+ s$ _1 o
2 U, _9 r* e8 y/ ~7 f

* x' F, a% g: s* t8 H- h! ^8 X/ W; _# uend
0 p0 Y+ [7 F# Z' E) C2 x+ r+ m( t2 W) H6 A7 P/ d* R
to update-credibility-ijl
7 m9 _1 L7 L/ P4 \( T
( B) L  l# M& ~, f! S0 o( P;;
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。
: y$ D( r: q& F$ p% V- ?let l 0% f+ h; u' n1 m, J5 q" p& Z( U
while[ l < people ]" w0 V7 c: O' \  ~: ^% e
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价" X$ \$ s# M5 y% V6 h
[
5 p: a8 s- J  Z$ |; ^+ llet trade-record-one-j-l-len length item l ([trade-record-all] of customer)6 e% I. u% ?$ E& v" t  A
if (trade-record-one-j-l-len > 3)
3 i* ]  Q* s0 D+ e7 u[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-one1 h& `% s$ ]! B- N
let i 3$ w8 B% J: J$ b% U; c5 K. r8 K
let sum-time 0% _2 h/ s0 i4 c$ Y) I: d
while[i < trade-record-one-len]
2 z: w7 [2 t1 y6 Q4 L: E[, R% Q$ p' `2 h# u: S
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )1 a% W# n9 o% r3 w# W# p* @
set i
8 S2 R3 W: o" Q8 g5 X* r2 t& J$ i( i + 1)
8 e: e' n+ S7 `' o. T. P! S( Q
]# M# @2 V5 `0 e% R1 S' E8 M( F# ?
let credibility-i-j-l 0; P' P7 H/ {3 W1 j5 R  r
;;i
评价(jjl的评价)
6 m9 O# d$ v2 w& v/ q5 E, Xlet j 35 w7 M9 W. l0 c$ G) o7 P) M
let k 48 C3 F( V3 x: o1 X1 u
while[j < trade-record-one-len]9 D; U9 ], p5 S
[3 ]6 L. e  g( `0 K) ?
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
* B5 F! c  \* D8 z. ?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)
5 P* q$ h3 y/ Y0 `set j4 O) u/ ?" g7 |! o# T3 m2 r
( j + 1)

! U" B" h$ O  N- J% ?8 H9 ]]
1 Y4 M% n/ D) s  r* t! Sset [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 ))
* U( a  i$ o& Q" o6 C( v6 b8 A+ ^% C0 C% {4 u3 V; }
5 s0 k0 i' O5 p& K6 |  H6 r
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
; V6 \2 u% L7 B, X4 Y( o;;
及时更新il的评价质量的评价% X- y) g% q& a& U
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ], ?, U8 @6 F% N2 I2 O* T+ X- J
set l (l + 1)
1 u/ Z7 e2 X( C]8 I0 C1 }$ [$ h4 t1 v
end6 Y6 r) o1 d6 h" x, [& R
' B0 M. f5 B2 s/ N/ k) _! r
to update-credibility-list" e) Z: x+ j  Z. |
let i 0' @+ u2 A& Y& a# c# j. O9 K
while[i < people]& A; s  |9 R3 r. `- E; X* Z) T3 d$ Q
[! K+ ]& u3 L, V. |# o
let j 0
4 p; v+ W) V) Q7 f& b9 T5 _let note 0
, o4 o* C* @& plet k 01 r9 T/ S' j3 r9 I, {8 \) ^
;;
计作出过评价的邻居节点的数目' @; W2 m' _2 @+ w
while[j < people]' F& |! D; y7 U# g( g
[
( G  m6 F& X% L# y7 A1 Fif (item j( [credibility] of turtle (i + 1)) != -1)7 e, U* R$ {0 i! z* g
;;
判断是否给本turtle的评价质量做出过评价的节点
5 K) G. f! [2 ~& |[set note (note + item j ([credibility]of turtle (i + 1)))( ~% v8 r: k8 b0 n
;;*(exp (-(people - 2)))/(people - 2))]
; r" r4 @; R2 d! Z# o7 n
set k (k + 1)  z" }9 @$ P( `% C
]
# q; V# B" E/ s) ^& hset j (j + 1)7 X9 `  I% ]3 [2 i; g  f1 v
]2 D1 j" V8 D- z: Y2 ]2 G2 ~9 p
set note (note *(exp (- (1 / k)))/ k)) i0 \7 l( \* v0 ]  s
set credibility-list (replace-item i credibility-list note)
* h* T1 r( e! I/ Pset i (i + 1)
0 {5 }) K6 b2 z$ }7 @# p7 u]3 Q+ _4 [. j2 Y+ ?. q9 `, O
end  t- Q1 M1 F6 L
3 H8 r; j( [2 G7 d' x4 ^
to update-global-reputation-list9 Q7 d- P3 }; H$ i$ D5 Y
let j 0# A, K; k3 |1 T" k
while[j < people]
! {5 W+ g6 ~* O' l[5 P5 V8 n7 e. K' X
let new 0
; d5 S' w: y6 x: [! T% `( K;;
暂存新的一个全局声誉  \. o3 d# g# D
let i 0  y. p2 p; l: h( D9 [( P: J
let sum-money 04 t' N1 A' v$ \0 L( e* I1 v. {
let credibility-money 0
% \- n6 d5 j/ h/ z, cwhile [i < people]7 Q" e. ?% L  {8 s
[! l. c' `5 O- X, p# Z, J. t
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
* l1 u- Y  B5 ~- Vset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))! W' q; a; W( b
set i (i + 1)
1 z8 V% B8 H$ [9 L7 h7 o5 k7 S' G8 J]  H6 e* Z9 O4 \0 ~+ z
let k 01 U" C, r" S+ N; Z* I5 f. a
let new1 0+ t0 W. R& a$ x1 j
while [k < people]
5 \4 y! P, H8 b6 G[
0 D2 e( K, x( sset 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)6 D/ `7 A% l& ^) M4 [* }. k
set k (k + 1)
; C1 y9 h% ?2 G% }  r1 s. _]
: c0 k9 o" E9 g4 p5 Fset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) / h4 C4 s" ?. ~+ ~
set global-reputation-list (replace-item j global-reputation-list new); r  d' ?6 E# T. O% E% I1 i
set j (j + 1)
9 E6 T: }/ Y$ }4 i]
2 \* p  T4 S0 h1 B6 Y. Mend
  F6 ?$ h  c* X$ H
  O8 V" W+ ?" p  K* m0 ]
# {: }0 C# ]6 _* K% F" _; A
3 V7 x/ B! o! _to get-color
, i9 J8 U9 s. {+ D8 K+ \2 S. \3 f0 R$ d7 R* d
set color blue
( m) q6 F6 ~; N! l4 r2 T8 ^: O7 X# a3 b
end0 x' l6 |: X+ D; R6 B) y3 J' N

( z+ S3 Z6 J4 t, Z4 R" sto poll-class
8 s5 R+ m; ]- _" qend
; C1 e1 K; r+ b" {* y1 F0 b6 ?/ I  z+ D1 U( |4 p) L
to setup-plot1
% y6 }4 y2 _# J2 t* W& \3 V( K6 x3 j
set-current-plot "Trends-of-Local-reputation"

4 _5 W6 @  ~8 z" g# p$ a$ o
9 s# j7 u5 @3 u4 J# _/ d$ Jset-plot-x-range 0 xmax

/ q0 g- Z; b; \# E/ o7 O$ @. z( [" N- f  K0 G1 S6 W6 l/ K2 X
set-plot-y-range 0.0 ymax
6 W9 ?! Z, Z2 d& Q  _1 ]5 Z
end- t8 e1 M/ h; u. {
, y( Z/ P& ^$ q
to setup-plot2  k- K5 d& _/ z2 w. i$ y
; S& r& }/ E0 x9 ?( w
set-current-plot "Trends-of-global-reputation"
, W" T6 E2 V6 _1 H( J! n5 `

, b8 p# A6 T7 A% l8 v" aset-plot-x-range 0 xmax

. v5 h5 ?9 o( a" K- v1 t0 L; _* D; X  T( e7 Z( n" ]
set-plot-y-range 0.0 ymax

7 Q/ U( D8 k. @! s4 c8 K* Dend
" u; l2 F8 r) j& f6 m; i- P1 C9 k
. ^: b! K6 {$ Q0 Z, k' V6 Tto setup-plot3
2 A& U+ T6 @2 y5 I* Q$ W' _& m) a3 L' b
set-current-plot "Trends-of-credibility"

1 R5 I; i0 K5 V, [: Q$ g5 m7 A
& {, }$ m4 G, }  R2 @7 w3 w; M+ G# Vset-plot-x-range 0 xmax
) _5 W4 a4 ?( ~! }  [! o9 T. I

) x) p2 P# {0 Kset-plot-y-range 0.0 ymax
% N8 Y$ K( Q/ l
end4 P- k% q- y$ i5 |* Y# F2 ]

% h2 ~: }) X* m1 O, Dto do-plots; X: V  V& B  Y( X/ S
set-current-plot "Trends-of-Local-reputation"- g6 Q4 {& w6 H7 C
set-current-plot-pen "Honest service"! }, q1 r( c; w$ A; W& f
end0 V8 c* J3 w5 \6 M9 I; \
# `! m; X  g- y: L8 {3 T
[ 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.
# t$ G) E% q4 v: l" M
' x, w0 X2 x# Q5 A: @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, 2026-1-5 17:33 , Processed in 0.023044 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