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: 14164|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:$ m& N3 I% d- L5 [4 F
to do-business $ Z% [& m' ?  I
rt random 360$ y5 w0 u, r% s3 h7 ^5 _. S9 S
fd 1
, R- J! {% K1 [/ l ifelse(other turtles-here != nobody)[
; e. o: V7 T1 Q   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. Y! W3 S0 N1 b2 m   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    + y0 l# o6 C7 U6 @. M! |
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer4 O0 q/ T% [8 Q8 \. j5 g
   set [trade-record-one-len] of self length [trade-record-one] of self( m/ [+ v! u+ O9 {1 x
   set trade-record-current( list (timer) (random money-upper-limit)): u* Z9 h$ E) I0 A$ K$ v! D! Z# F+ C
3 H1 K' d( o" C5 ?- _
问题的提示如下:/ D* M; H8 T: L% o$ F# C

2 \' {9 Y2 p; c1 cerror while turtle 50 running OF in procedure DO-BUSINESS
$ s" x/ O2 q: X  called by procedure GO' q. W7 w4 d' V( k1 W1 r' F! Q( b
OF expected input to be a turtle agentset or turtle but got NOBODY instead.( c  J' Z0 y! W' `! G
(halted running of go)
' D' r* ~+ M8 K" X3 S: a
0 x- J' O. J+ s- ^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~~# ]& V$ d. c# Q0 C: Y6 f
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" m; e! z0 G4 n- W. K
globals[+ a* R, h+ D1 o2 b) l% T
xmax9 d( g% e! F0 m4 m
ymax
. f$ \# T  g$ R. q7 Kglobal-reputation-list
6 _! y2 ?6 D' ?6 u+ Z& o
. M5 Q! V1 y3 A  X0 @+ k2 ]5 U# Y;;
每一个turtle的全局声誉都存在此LIST
( L+ T, l. }" o$ F8 z) \6 x4 wcredibility-list
' k0 f' M4 A0 \, I;;
每一个turtle的评价可信度
' m8 f& C2 u7 i1 C" Nhonest-service, @7 `* j6 F7 |7 |% w) m6 n
unhonest-service6 I. k! d1 c3 X5 l: T
oscillation7 i! q2 v. X5 k5 m3 Q& R6 y
rand-dynamic
+ w" y& d3 F0 e1 n]
# A* i4 O& r9 h8 `) d- r9 h
- L" I  M; i9 t( {1 yturtles-own[% a4 Y3 w3 O0 j
trade-record-all" q- z' @# s( c9 O. ]( m# l1 X9 B9 Y& L
;;a list of lists,
trade-record-one组成3 O) i( o& F$ E, K  K8 ?" U
trade-record-one
% S1 f& p% R6 k. @;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
- d% g+ S  H* z" S" |& Q
4 s' k8 Q- i6 b7 ~( J+ f;;[
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]]
- O' r& U$ `. [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]
: }. v6 W0 B& m" @credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
" u3 q# h0 q: lneighbor-total
  u& v+ t4 G/ L4 O; c;;
记录该turtle的邻居节点的数目
% w6 `, I7 X- r: |3 [trade-time- t, @- W: [2 J" v
;;
当前发生交易的turtle的交易时间
8 g- d1 E: J- m7 L8 B4 Bappraise-give
: e# r% e/ ]& E. I1 m* u1 U;;
当前发生交易时给出的评价
/ Q- y% }! N/ i  M3 v* A9 qappraise-receive
1 q3 Z$ K) F; q- W1 s! ~4 j;;
当前发生交易时收到的评价
1 o. t0 |, y+ L- i! cappraise-time5 D, C/ }7 y* D# K; @% ~1 S6 ~( G( d
;;
当前发生交易时的评价时间/ Z& B6 S; x6 n) ]. a5 i# T$ w
local-reputation-now;;此次交易后相对于对方turtle的局部声誉0 ^, N/ Z2 j! x' s
trade-times-total9 {6 r3 }, G1 X+ @
;;
与当前turtle的交易总次数& y$ _$ O+ H% c: N8 h
trade-money-total  b/ \! e" j1 b
;;
与当前turtle的交易总金额
$ ]7 B$ o0 C) n" @7 L& Ilocal-reputation
# p8 S) t6 G' f& ?* H$ _( yglobal-reputation. Q* d5 Z) b' W( p, N) w, v
credibility6 K5 H% M. V2 p6 k0 ~: X% @
;;
评价可信度,每次交易后都需要更新3 z* o* n% s) d* o  W+ H, n5 C
credibility-all
* J7 W( Y' q8 R: y; Y;;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! U  N& B' O( o7 z
/ Q5 I" |. h$ ~- |
;;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
3 P3 b1 p  u6 t- O' ccredibility-one, N  c3 u2 I- h5 S
;;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+ M4 i. @! B/ T7 f
global-proportion) l  R/ a4 b* b4 Z
customer
2 z5 z: {$ T- _# q, gcustomer-no
& z! J- s, [# J7 D0 B  ?! U. otrust-ok9 v1 Z  R& C0 V9 _" ^3 p
trade-record-one-len;;trade-record-one的长度) j# f6 J: u8 m" V7 V9 R4 t" M4 ]
]
$ V) K6 ?4 n- K# _, }/ H" y- m7 h
' w% {9 b5 d9 |' ?5 m+ T% [;;setup procedure
( a8 N' v1 N0 o3 G4 q- _, S& |3 M) q. {6 E( y
to setup' c1 B- a' ^+ h& a0 Q, W) S" |  H
+ K* ^$ t8 r) ?1 e1 i. u8 g( a% g
ca
% p; W: r7 e/ S) O3 S: U

  U0 R5 ?7 S- [8 O' F* rinitialize-settings

6 `& R+ F% b$ J, ~, w% S) ^0 ]2 v! f% l( I" C0 w
crt people [setup-turtles]

" U2 }- W+ p% U
8 Z8 W3 R- \& [% v4 ]reset-timer
& v$ V. x3 _9 ]5 P, g, H

( G" g8 ~% }. w3 t* e8 v' O+ d* [poll-class
' R% R9 K  _6 E8 |! m6 t
3 }( Y& ~* I) L: k' S6 O# A
setup-plots

/ w: c/ t3 Q0 y0 o, O, z; Z, d$ J5 z6 |" G8 m
do-plots

+ u! g, M- u% R7 e' c2 h8 D" mend
  |' o' ]3 S7 V2 _) b8 s5 y/ t" A* _+ S1 ?) T
to initialize-settings
- r) w2 S, T% {5 }+ X' v. j1 a$ o& g  X) b- n' J7 O
set global-reputation-list []
5 u2 s: q/ F% }  u+ N- L! o
: Q# L* j7 D- y5 z2 u1 n2 d0 C( N3 K
set credibility-list n-values people [0.5]
& I. }( _% f* j+ G6 g3 Z

# f$ p! U9 `: Z- F4 Nset honest-service 0
, `/ y3 ^2 \2 ?; h
6 R) o0 `% T# j
set unhonest-service 0
0 e7 o9 Y1 d& x6 w( ]% z# P

9 R5 ]# y9 z& B6 S" [$ K7 Y0 Fset oscillation 0

$ g" _- A6 j0 ]1 Z7 l- s( W
/ m$ U* Y  c! u! I2 @- O+ Sset rand-dynamic 0
; W$ U. b8 S$ C, S  b
end( _1 Z1 y% k% e1 b; H* K, \
1 }; s1 T5 Q+ ]/ B
to setup-turtles
8 t+ Y5 j& m( i7 P5 ]: e2 M2 S9 |. ^set shape "person"
- s0 k  Z! L/ v% c8 \5 s6 qsetxy random-xcor random-ycor
* d  K5 f4 m1 X# tset trade-record-one []
" D  Y6 r* H/ F+ ]" h4 w7 Y, F  `

7 A6 u; x" r3 n- b5 H$ C; a, y& _set trade-record-all n-values people [(list (? + 1) 0 0)] ! b" a# T; s. w% l7 D5 G. I/ E
9 k1 l) p7 W1 l" b
set trade-record-current []
* m7 f' a9 H1 N% B1 B' Zset credibility-receive []& h! K1 |6 w. [
set local-reputation 0.5( D$ d. g4 L  z
set neighbor-total 0
$ m5 ~2 ~8 z5 W* b4 @: K6 Nset trade-times-total 0- |$ |# k3 n2 Z+ z' F& L9 O
set trade-money-total 0' o2 o' s. x: G% k/ H5 Y5 O9 a
set customer nobody0 O, Q0 G; X) a3 I/ k
set credibility-all n-values people [creat-credibility]
$ z  E' U+ D& bset credibility n-values people [-1]
" g, j4 @. K# ?& Hget-color3 F! u7 L5 i8 P2 o$ A: ?, X
) Y( S9 v; @! l
end
0 D" Z/ G, s; s( k" B+ p: l/ @$ M8 @8 U1 {
to-report creat-credibility( X1 X. K. A) @
report n-values people [0.5]
, J# }: C; T1 E1 i+ {& Dend1 [' I( T7 I# a3 V; H% \
3 C0 ^2 }5 h3 ^/ j+ I
to setup-plots
0 E* p& E$ g: F4 b+ N6 o# Y; A' ?/ r, j% k
set xmax 30

. t+ i. f8 m! j+ I+ N- R. }4 K; e; k; M9 M; ^4 M7 l% Z
set ymax 1.0

! _! x) v- y) N$ k3 G. ^; n- T. q9 R% K; Q. M+ w* t
clear-all-plots
) ], w5 }4 b- ]8 E. m; U& F
1 M- C8 p% g: N( ?5 i5 Z
setup-plot1
' w$ p/ O8 C$ [& s6 }6 {

( E" D8 P1 S$ F5 C3 d7 \setup-plot2
* h! a7 |/ G: y: _, ~% o' F
' ?) [1 u3 Y% B) F- z! z
setup-plot3

' v8 \0 Q) T6 \4 send
6 h! X7 ~  b9 Z- o3 l# s3 n  @1 Y3 U2 k. w& u
;;run time procedures
$ ^: `' X3 w$ N% T" a& H0 R2 c
( J0 v' i4 G1 g! m1 e( Sto go
+ y& j, w! x  d
8 K/ }2 h7 C1 m# ]3 u, [8 task turtles [do-business]

/ i& p" D% A4 nend
. R, f. W; E4 c; p; u6 Q- Y" n0 c, s7 ?. d2 F
to do-business
' }, K0 s- @3 J0 ~" Y

5 ?: G; o; C5 H( i  I
8 M* v& y, D' R, U; \rt random 360

" k% j: Q& D9 X' ]+ m0 o/ A1 O" K( l; t5 a1 z3 i* c8 Z* i
fd 1

' z6 h9 Z. g1 j+ {
4 _6 J' ~; r% ~ifelse(other turtles-here != nobody)[
% l6 u& q0 Y. g; Y3 R3 `

' j8 j/ x3 _3 K7 dset customer one-of other turtles-here

+ k, k" R* A$ b: N0 }" X2 ^* k1 b3 L9 R( S' g9 H" z5 _
;; set [customer] of customer myself

  D% _1 Y$ U, S3 X! @; n  O! S2 l
3 ~$ P& S& R! P* f' ?% p% j' Uset [trade-record-one] of self item (([who] of customer) - 1)
, H1 ^" R0 c- h1 ?- s[trade-record-all]of self: \. @+ D! s# r4 L2 j2 f1 X, u1 I: ]
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
& g6 w& o3 `8 a, J+ b5 F/ l' \
$ Y$ R4 f# @: D: \8 G
set [trade-record-one] of customer item (([who] of self) - 1)" [2 Q! f) _# v) @! G+ m
[trade-record-all]of customer

8 P7 b( n+ |' W; B3 {
! S8 \0 z" G% F( U5 S# Kset [trade-record-one-len] of self length [trade-record-one] of self
5 g& y; G9 y6 t5 l  a- a8 y9 A
9 s" t: Q) y# d0 J* N% L
set trade-record-current( list (timer) (random money-upper-limit))

- m, L" u% B) M" Z1 |$ R& p- I/ E- ~! x& U! ~1 F
ask self [do-trust]2 i, g8 [; X4 E& t9 v6 C! h0 d
;;
先求ij的信任度
& z1 n2 _/ e! u0 k+ [$ E* C
* x* h4 d, Z2 P7 ]% Tif ([trust-ok] of self)
' T5 v2 Q# F* K/ y  h;;
根据ij的信任度来决定是否与j进行交易[9 u2 C! O- ]  g5 f0 K. U
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself. j. M* s7 [) }+ @8 T' O1 w
5 r5 `1 N4 r  v$ ?4 e- _
[

6 J+ V7 _# B4 R( g7 k' ], ?& `; U" ]' r4 T" [2 m; n7 F
do-trade
" D9 y; S$ g* a! F

; y% R3 [& y8 \, d6 iupdate-credibility-ijl

* u( q" ]4 J; M
* h; o2 q, T/ a$ U7 F8 Aupdate-credibility-list
" j0 R2 q3 p+ r% t- i1 I
, d- f4 h# U% U% ^

% T! L! I7 `$ ~) i3 m9 {5 Lupdate-global-reputation-list

, h5 L/ f# O: Y  x. J0 m! b& W" w  d0 J6 w: _  X/ n% L  h, f$ R* j
poll-class

) S2 A5 P1 W  I" q
& E% G5 U. _1 s: z( i- K' o" k9 Mget-color

' L9 n& B4 a2 ~. t: [- C* }
! V4 K, m' _/ R  V3 l; F0 k: \]]
% W2 X; w) r- j$ M) E$ b/ A! L4 G6 [' Y8 D4 M
;;
如果所得的信任度满足条件,则进行交易0 v8 S1 }0 e' a' ~. D

; h; F% a# A! k9 C; Z- {[

2 t) J2 t, Q2 F$ b$ `0 {1 C$ w2 T& m$ ?! ?
rt random 360
  N4 i9 R+ v* D

, }; u" y" f) t; tfd 1
! i0 @6 M9 f+ X; B
" I6 L8 b$ |) Z$ @: ^$ b
]
: J9 K  b# o2 }8 L5 z

1 d0 ]# X! S, m  b  J' F- \+ dend

" E$ j2 M0 z9 |5 Q) i- v
5 {7 L+ n2 @+ L& m. b7 H2 ato do-trust 0 |3 n6 w+ Y' N; S' x
set trust-ok False
" X, f# _, A* g% S# U
6 k- ?' {  e) S& D2 K& c
% o" o6 [/ `, d2 Z( `  f8 T
let max-trade-times 0) a+ M+ ?. E: E' W: K3 k0 R
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]5 \$ u9 s$ i/ Q( V0 \8 R8 i
let max-trade-money 06 a7 q3 H2 S, |6 @
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
- @9 P6 G' ^' g5 t: s* @/ glet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)), ]4 }% o4 d) m( T/ R# J

2 U9 Z; [$ J2 N9 L: L/ A! J: g; m
6 e* S1 G& v2 ?: F, e/ y* _; R. Q
get-global-proportion) r9 J. \- o+ m* p
let trust-value5 O8 }2 J9 @3 Z7 g( ]0 v2 {
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)

6 x: A7 E  V+ C( U- X) P; f5 Xif(trust-value > trade-trust-value)
) ?$ w2 D. p& O+ p# ?[set trust-ok true]- E0 Z& o; U$ u& @* @+ J
end
* j6 n5 @/ r; Q- d5 l- S( Y) m# M- ~+ R* Z$ F& H1 e3 t, l
to get-global-proportion
3 y4 c, q" i0 u( U0 b# Wifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)7 Z3 [/ W/ o: [' I
[set global-proportion 0]
1 t5 V/ d: P/ E* o  y2 P[let i 0' ?. x. P  t& F/ v  e% M
let sum-money 0# z- c8 J& p& C! @$ U: n, E9 C, p
while[ i < people]
! }3 H9 L- z) c: q" q, c[
, z. w, s* b1 |" w2 C$ Nif( length (item i
" g( w2 D7 R  ]9 U7 l/ k[trade-record-all] of customer) > 3 )

8 b) [8 t2 f  d  ~4 h9 Y2 R( x[& X1 o* Y- C2 K6 a- m3 v2 [
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
& l5 U2 r4 _* Q+ E# `]7 u3 T( x: m3 m* C. E& r
]0 q1 }+ M# \1 z2 K: K  H
let j 0% @' ?& M4 d+ e5 ~9 D5 ?
let note 08 n- L7 ~- P) J" H) i
while[ j < people]
. k( ?& J- j  @) H[
3 [& u' \8 @" D. X% {if( length (item i
' O' L& i: R, l/ C5 T[trade-record-all] of customer) > 3 )
: D: C, k8 F$ n8 A
[% r% `5 E: ~  b! S
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
; P. i6 q" h* q[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
2 a+ u% m2 g: h6 X# a, c; F6 p, @, {[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
  z( T  G; i% b) B; }], a" o# T7 W+ T  h8 Z7 z) J
]
' C4 a% E6 m4 r( d# O; ?* q! L: uset global-proportion note; r1 C9 b8 k* W  L
]% x- n* U" t+ f& ^' S! {& d* Y0 a
end
- E1 h9 n3 i0 K9 ?: @8 s% a8 k7 y  D  `4 Y2 e* p) ?; D
to do-trade1 j1 ]: [# x$ k  ]( q
;;
这个过程实际上是给双方作出评价的过程0 i6 K$ L0 J. u% b& V* D& y( O
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
) k! v2 K0 Q6 c, \* ?set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价$ d! D/ n' b# M
set trade-record-current lput(timer) trade-record-current1 \# W( P+ j) S' [3 b
;;
评价时间
: a- Q% d# N% @ask myself [" f! g$ C. l- {% n1 [
update-local-reputation9 j4 u, p- ^# ?6 _
set trade-record-current lput([local-reputation] of myself) trade-record-current2 N/ e$ Q+ C, W# s& J: ~) D
]- i* V) Q0 O; Y) S. ~9 K
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
! n% o) K0 X+ o' {1 R;;
将此次交易的记录加入到trade-record-one) t1 p3 m  ?) O" H) Q
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)- r  E! I& X. ~
let note (item 2 trade-record-current )1 y+ r8 s0 y3 a
set trade-record-current
8 Q) X+ p% `* Q3 O" q8 s(replace-item 2 trade-record-current (item 3 trade-record-current))
. G$ F. z5 W: g& u( e/ ^
set trade-record-current/ F4 i$ S5 O& s1 B. [% U2 U: Q
(replace-item 3 trade-record-current note). l4 ]6 D' s9 U) J/ a; r

" E+ z" L# I  g9 Y8 Y
: J% i! r' D9 y6 n# W" K+ N
ask customer [
5 M, C$ g% M/ B" \# w6 Nupdate-local-reputation4 O+ k% c, E& h; G/ {% n
set trade-record-current
8 ?1 ?; z6 D  k* G6 ]2 U$ Z(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
) U. J; v2 c2 C, A3 f2 |2 a
]) J! K2 t+ q0 P8 t: F
+ S0 p; R' J9 _6 n& F% \4 m
3 X2 M" l- T$ y! z. d5 v% a
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer* A+ z& f# V) T$ p& N- R

$ m: d7 @! c# _' _3 kset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
3 @( T2 [7 S) b;;
将此次交易的记录加入到customertrade-record-all% P( h" Q: }# |! d& K* r3 @
end
. P8 G& S& f; B2 `: t, q
% y1 o8 s. ]3 n: \to update-local-reputation
* T8 F: O- d' R5 }7 P9 V1 Aset [trade-record-one-len] of myself length [trade-record-one] of myself
0 D2 @6 R" M9 r: y1 ?5 x/ f' q* a- k& O! J, S

! @* U1 `/ `& C- c* };;if [trade-record-one-len] of myself > 3
- _6 H/ U$ C; G  W
update-neighbor-total7 }- f4 R# V( X2 y7 J  S
;;
更新邻居节点的数目,在此进行/ \( T* @; y+ f2 u4 i4 F3 b% Y
let i 3& Q" d  R! r/ p- W
let sum-time 0
# D( `8 J, H& }* Z" U( h, mwhile[i < [trade-record-one-len] of myself]( t2 B* s$ B; ^) d, S2 M* `% \
[, f: L0 m# R5 b- Z5 I% i
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )& y% y0 f! w, |- K: P, S
set i
4 Y2 D# T8 q( M9 ~4 |) i1 I- H) G( i + 1)

( R: I$ w0 m4 C1 D; N# D]
" X( L+ G* O. @let j 3
* J- }( O# _& [( v6 nlet sum-money 0
7 [: x; z; o$ h3 L4 t  Nwhile[j < [trade-record-one-len] of myself]4 y. I& e- p8 b/ X
[
9 l2 V; W0 s, g4 _, I7 R( Rset 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 n4 m( g3 [+ Q6 v5 s# |set j
! i/ p; r) a, R& j( j + 1)
+ X/ k/ c5 D* t  a
]
: G' k) G' p! ilet k 3
1 T! n  b8 b: X3 v; w) L1 wlet power 02 C  d" a- \% _7 d4 \, K4 x4 A
let local 0
; ~# d; f/ ]  X* w/ X! Xwhile [k <[trade-record-one-len] of myself]
6 j: q$ r& a- Z[9 g9 _1 ~& {& u  E$ V) t2 X
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)
5 m3 H2 t! m$ q# p# f9 zset k (k + 1)3 e/ S( v$ }0 l" c/ |6 z. r6 a8 c
]
) K2 _$ ~* {2 [. v9 Y9 I6 Lset [local-reputation] of myself (local)8 ?7 ~8 s0 k0 {! |6 n  I! y
end0 P) ^! Y+ S4 B0 Z7 N8 \2 X
7 L/ `- R5 x- }1 z* u
to update-neighbor-total
8 A* I1 k  q5 ]! `' W3 `$ d. H' z. G3 b% }4 [/ P# ^
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]) h. s. {1 ^/ k; e+ X, ]

2 i4 _  J7 s/ M

6 T. z0 q: Z! J. Iend
& p4 n6 b! g  q' I3 C1 k- j8 I) @* `8 K  U
to update-credibility-ijl - n7 Z3 T# T1 S: R! t8 F, c0 {, x
& p- W$ f* E* v" ?/ p! h" ~
;;
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。
" e; H* Q- a( e: f9 n; V$ @$ Dlet l 0
* P- V: s9 d* T3 D- t4 }while[ l < people ]
0 n" W  g/ ^, ~% 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
1 N" l7 r8 f+ w4 m[; r) {( k! l9 E! }
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
% K' t! k4 v9 J- x" nif (trade-record-one-j-l-len > 3)
6 x8 i: \9 q5 V& I, }& m9 q' 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-one. N2 f( T( l8 H  _: `9 }( H
let i 3
! J$ X+ R$ n' {let sum-time 0. }0 ~9 P+ C% y. `; X
while[i < trade-record-one-len]
$ i/ W' N% l0 j( t) y! Z9 }  |[* a9 c, x* N) `3 ~" d* {) U7 Q% t
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
4 w$ A- P+ p+ a. V* vset i6 _+ m- r* ^4 S; P: A
( i + 1)
# e  B, Z) N" L6 D# N
]
$ R5 N/ U3 p( y; E+ @+ Blet credibility-i-j-l 0
. P1 Z' p! ]- q, t;;i
评价(jjl的评价)
) C# E' k& J8 Z" Z! Zlet j 3
. Z# `1 y) h  }; \% {, klet k 43 M% S( F- [9 d
while[j < trade-record-one-len]* i; j/ v2 Q7 U* x3 [6 l: V
[
( L! P  t3 k' s! U; p) Owhile [((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% L3 e- d8 x- }+ j- f
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)8 I6 @$ n8 |% H' o9 l  J
set j2 Q) w9 V" |  P* [- R. v
( j + 1)
* u& ~5 C( q  g- u
]
! T5 b2 V! v. ~# m) @9 C, |3 _* d5 }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 ))+ k% r; m  T# k  e/ p) i9 @
7 D: u7 Q" S* Z. E! o

& X: N. M: [" P: ~+ Q' }let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))- l5 u  T( ^6 T: J* A
;;
及时更新il的评价质量的评价
/ j" J2 `% H( [6 j) Hset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
* \+ V2 H6 _( H- B8 Wset l (l + 1): j5 g1 A: m0 u
]
& ?  z% Z/ F4 O& z( Cend
7 h+ i/ v/ j, t2 p3 L! u/ C. r; N$ w0 Q) v3 _
to update-credibility-list
; e2 y+ o7 Q8 g; v# _let i 0
( k. y1 ~7 C! ]! ?4 C0 Uwhile[i < people]! U. `; ^% K, ^; ]1 m
[9 f3 i2 A2 q8 N" [% k" Z
let j 0, ?/ j6 n" @/ t) b# H" X
let note 0
' a4 c2 i" Y: F# \' X& Blet k 0
7 A6 Z* |) M' [;;
计作出过评价的邻居节点的数目
) h- V0 m! V+ V4 ~; B# gwhile[j < people]) z" L* p6 w: q) S5 Q
[
! }9 ^9 X+ b0 `2 {1 m  U; @# V3 cif (item j( [credibility] of turtle (i + 1)) != -1); V+ X$ T5 y( r0 ?+ |& r4 k+ L' _0 C
;;
判断是否给本turtle的评价质量做出过评价的节点
. f: U& v. |! r0 W; U[set note (note + item j ([credibility]of turtle (i + 1)))
7 ?* [, p3 n! D5 q) Q2 C( p;;*(exp (-(people - 2)))/(people - 2))]
" U( I+ G. W# e* y( V# z, o
set k (k + 1)
2 D6 h" Y. @. a1 A6 ], k! X]
3 w7 G' g& D' K. Tset j (j + 1)
  U& o( F8 c; l]
/ x1 R* V* k# Q- l$ qset note (note *(exp (- (1 / k)))/ k)3 i, k4 o7 \) n; M8 A+ x
set credibility-list (replace-item i credibility-list note)
! ]2 d, r' m/ O9 F: Zset i (i + 1)
3 A/ B; W1 \+ m6 p% D# n- |]# T/ [( p' ?$ Q* J' o, O  u! L
end* S7 r: O  s; M7 c* Q

! y$ L  K2 S# ~$ u3 {' I0 }to update-global-reputation-list  e( M& |4 i) j& S
let j 0) R9 e( }5 J( K8 c
while[j < people]
; o4 {3 A  [/ I1 B[
0 ?9 x8 e" a8 b# G6 Q8 N: |0 y  Plet new 0) ^! F2 {9 @3 W3 y8 e" e$ I
;;
暂存新的一个全局声誉
8 l# c" P1 }, P; R% Clet i 0% f" L+ U6 ]; `! Q
let sum-money 0
- z; t" h/ W, E1 L+ |let credibility-money 0
4 ^0 C+ ]0 F. X# Awhile [i < people]
/ m1 X# @( g" V. W% I- J2 T4 O) k[$ g9 Q$ p9 L0 T1 r+ V" f! s
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))! L' n+ n& T- {' U
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))4 Q( U) x1 F, Z; P3 U
set i (i + 1)
8 ?8 Z5 {3 u* l( ~]+ t4 k7 v* M( R4 P8 P
let k 0
$ O0 a& s5 ]7 G; ilet new1 02 y& b  I9 s/ @9 u  X+ e) B8 `
while [k < people]
8 u) ~) \" l, r& G[
! B  b5 C6 N  h1 W0 vset 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)
& I4 w1 d/ {8 i" v. Tset k (k + 1), D/ j$ r4 I0 c; a$ b
]* I) ?# l0 X) K" \6 j
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
/ W* t9 }  i% i# V; \! L4 J6 bset global-reputation-list (replace-item j global-reputation-list new)
; R! \9 L; H8 v" k$ |set j (j + 1)7 E9 N1 u. S  m' S
]7 j' _: G( Y+ [7 p8 m
end' Y$ f! ?' X1 I
6 c. y7 y' h0 o4 V7 g' j* X
4 t9 H9 |' i+ Q0 Z( h

3 m: z. F$ ^4 L# h- Y+ _to get-color
$ f, p- K9 v! P. [8 ~8 |  Q- O' q6 o+ Q
set color blue
1 G; `; u( L) r0 Y5 b
end4 y- E. P, l- \; \

0 ~" L! E% Z' y8 ?to poll-class+ ~) U# k* o1 s* l) y9 f- `
end
6 ?; u7 ]/ q9 C1 o; n1 e. H0 w2 R: H: i+ j. Q; V+ C( `' r% _0 z) i
to setup-plot1
1 W1 N0 G/ b# z" k, u  y* Z" }0 F- Z& q; e8 [7 U" [
set-current-plot "Trends-of-Local-reputation"

9 @, w5 G" B& X5 Z7 m2 c8 t0 I4 b7 i$ ]$ w# H& _
set-plot-x-range 0 xmax
4 T" o9 z: h2 Q8 n) Z" a# C; X2 {1 s
# D2 L7 z+ E! a( C1 n
set-plot-y-range 0.0 ymax
" _, i& q- t' ?* V
end
8 m* }$ }; l8 E% s3 l$ h( [& G$ e  _( X! N. ^: J! P
to setup-plot2
( c) T) `* \; _, ^* U; z% d7 j
8 n  ^$ i8 I1 b, J$ qset-current-plot "Trends-of-global-reputation"

0 m+ o) Z2 {4 Q. ^; ?$ B+ e
7 R% h( c: G3 h/ O* _( K/ \set-plot-x-range 0 xmax
3 ~* p6 a, c1 e  F- V

% d1 k8 j' c/ r6 i1 T: G) |set-plot-y-range 0.0 ymax

2 v: w% a# Q' rend- A  I! e1 y! _  n

: e3 V8 }( H/ @/ K$ t% sto setup-plot3* p" \7 `5 @" ?1 L/ W$ V: a

" E& @6 }" p1 v6 g7 g( N# `. @set-current-plot "Trends-of-credibility"

4 ~0 z6 M- t* h
& f6 i! W. E1 wset-plot-x-range 0 xmax
% s1 {+ u  a, _3 ]( L9 K3 N; v

! j; }7 [8 t4 Y2 {3 ^+ Fset-plot-y-range 0.0 ymax
  F' _0 r" F7 [% J5 y  P7 N* f1 V& f
end
& V0 D! Z6 I: D! T  u6 p. x+ l: {4 V* s/ N, i4 q( l7 q% n
to do-plots6 o9 S/ u3 u$ r: U
set-current-plot "Trends-of-Local-reputation"1 M$ p2 P+ P( ^/ e5 h
set-current-plot-pen "Honest service": `" {6 I& ~6 V9 k9 n" k
end
8 ?' H6 }5 z* D/ q9 p# I. L' d0 {( H0 d  j3 ]
[ 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.
9 e6 D+ ]. T2 t1 h5 P0 x
7 Z# b, c# A- k) `+ g& R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, 2026-4-29 20:23 , Processed in 0.018415 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