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: 12094|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:+ ^; U8 C- }5 Z4 D2 m( P' M4 t" w; u
to do-business
& f# Q& T9 e6 z4 ^. N rt random 360$ R4 t. O; e. o
fd 1& F- {& ^: x( P( h5 J( s6 |
ifelse(other turtles-here != nobody)[- _) L; c+ K) ]. g+ b" X2 a
   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.
5 \6 I$ N* p2 P3 M- n   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ( ^0 r8 M) t3 B
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer9 ?) Y  H! F9 p
   set [trade-record-one-len] of self length [trade-record-one] of self6 Z6 K& d; s# n* i
   set trade-record-current( list (timer) (random money-upper-limit))
8 r/ l/ |6 X- @# H% a1 C5 }% E
( }9 D- c4 k7 ]) y7 ?  y7 O问题的提示如下:6 R5 l" J) [. q! h

$ F/ I9 b$ X5 n& ]error while turtle 50 running OF in procedure DO-BUSINESS
5 A2 r) q/ L, q* i5 ?  called by procedure GO4 F) I- \# N( _* N) o
OF expected input to be a turtle agentset or turtle but got NOBODY instead.- O! i  s* W4 X- H7 L" b: [/ {* f+ D
(halted running of go)
) |% `, l1 p' s4 y) _
: {4 g  y) W8 B, P. q. W1 g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~~! d: x# n2 y0 T9 x
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
/ t+ `' Y1 C; ?. _globals[  U/ E  ~7 V% c$ B
xmax. P6 X- s% k6 v# w
ymax3 E+ O' ^7 ]  D% O& a; `* f: K
global-reputation-list
# k/ [1 h8 u! b9 D' J
9 i6 i, w9 }! P;;
每一个turtle的全局声誉都存在此LIST' }$ ~% M% f3 o! H
credibility-list' k/ P5 Y& u& ]$ \) C6 l
;;
每一个turtle的评价可信度  Q+ v/ S* n! c  K9 O0 Q7 _
honest-service" }1 f! Z( e& b0 [8 I9 A8 _
unhonest-service
/ D2 s- ~) T4 joscillation& |* o! p/ V8 F. M) J- ~
rand-dynamic/ E1 o" u8 t' x1 W
]
5 ]! `+ Z% B3 L4 z2 e  ~2 k' p  p/ v) C, g
turtles-own[
# t' c1 I( S& t, }4 O+ }trade-record-all; r+ |1 Y- _: I! I+ X, T, Z
;;a list of lists,
trade-record-one组成& ]5 {) R6 E$ f2 [
trade-record-one
# W  c! D* s. S7 m5 L. A;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
& p. p6 V6 h8 G; ?- e) A) f4 E/ n8 S1 K
;;[
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]]5 h3 }) O* e/ r2 u+ r' N. 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]" ]+ F. c- ^; d  }
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* z2 w+ V6 N8 ?8 S" f- M1 A
neighbor-total
* K( M, W# U: O( k. I$ Z;;
记录该turtle的邻居节点的数目
7 j3 a/ Z8 E5 w/ s" Dtrade-time
1 y( J# Q" A4 C! O;;
当前发生交易的turtle的交易时间
; p! j1 v" _" \appraise-give
, R: l! R9 j2 t3 d8 I;;
当前发生交易时给出的评价: R# Q: H& K. z0 ]( {$ \5 t
appraise-receive2 u: t2 w, j9 J4 E9 \- e% Y3 c& h
;;
当前发生交易时收到的评价
2 c- p9 w. `0 u$ s+ rappraise-time
8 K$ g5 e3 J9 f) L1 ]& M8 x;;
当前发生交易时的评价时间% N/ ?1 }$ f( r) y
local-reputation-now;;此次交易后相对于对方turtle的局部声誉- S! `% S7 n% i4 k) s& w
trade-times-total% ?9 ?" g& r; n0 G
;;
与当前turtle的交易总次数
! }# O- ^$ j( [. G- ytrade-money-total
0 t: z4 [& E5 p3 J. o2 W! ];;
与当前turtle的交易总金额
" J. ]  I3 _% q: t& ?8 _local-reputation9 Q/ P0 H" V% O- B* e5 D
global-reputation  b: [) M- @+ Y- U; a0 M* I
credibility
9 g. A$ ~& m* |& U5 K3 t" y;;
评价可信度,每次交易后都需要更新
; s! [* }) {- P+ K; `: rcredibility-all
' l; |, `! l4 t0 J1 y1 R$ f;;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; G+ S4 @' R# y; ?2 b

$ h2 f' b% V& w2 x. |;;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
1 Q& i" l6 y% o' H; V6 Bcredibility-one
6 T8 F$ W, c9 U/ r1 i  w$ B& o;;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( G$ ^2 [5 y2 n2 N! N
global-proportion6 s. @  ?8 U  V
customer' h2 |8 Q: O* A# G* I
customer-no
4 B" k) H; O9 K$ Dtrust-ok
, @/ B6 N7 H1 P% d3 G' H6 W( Wtrade-record-one-len;;trade-record-one的长度
( N0 g! l! T! [0 |- P9 n7 T]% l+ s, H  ~8 V, T) G2 s! J+ G
2 a% ~0 a- g8 a7 f% f! _
;;setup procedure
3 a/ k2 l/ [, }/ c
' V7 u* G! ~+ fto setup8 @- _( m" X! a8 U4 A! [% a5 u

3 k* Q7 t  Z) H( |ca

: N2 a( s; D8 i- N' q
1 o( X8 H' l+ _0 {initialize-settings

# p( P2 B1 G& N( E. A8 t7 a& q5 r' c% M0 x5 r
crt people [setup-turtles]
1 m: w) d) |! ], z

$ n- C" {7 w0 V) q  }! y' vreset-timer
. |5 O+ T' K# G7 ~6 S3 |
, i7 U' P& ?% J3 t
poll-class
7 H* Z& u% f% k% |  w  Y0 p
, Y/ w9 ^) M' ~* d4 Q
setup-plots
/ W) P6 g! `$ b! x0 ]

8 b* `4 _, r0 B; p8 Qdo-plots
$ z. J! b" }) K
end' D& t0 s2 m% X' F5 A% u5 B6 n
4 n/ H) E' @9 }+ K) M3 J. z
to initialize-settings) ?6 ^+ Q6 N, J: M: l: Y
1 O3 z. d0 {( ?4 ~) J$ m
set global-reputation-list []
, n1 R) }: j+ _9 `+ b% b+ d2 b! s8 k

' H& I7 K& Z2 v/ p/ F( M- O, Cset credibility-list n-values people [0.5]
: V, F& Z; r5 H: z1 V2 l

5 j2 s& h1 g; f( Q0 `0 F5 z- w; eset honest-service 0
3 N+ U" \( c& m! V. q

/ b! U- a, @0 zset unhonest-service 0

+ k# I7 ?. |& z0 C) `  H- q0 _
' \2 ~# Z% y7 X! S! |4 g" l: M4 y9 c3 ]set oscillation 0

/ |. P8 q* o! T2 Z3 L( J
( X' d& t, |. @+ s: Mset rand-dynamic 0
* R9 ^/ L7 T! h& E" m, e8 D
end& ?, u7 i5 ~% u- L2 o

7 z! k5 w5 p* I( f+ s6 yto setup-turtles
5 w. U6 S" m! |* oset shape "person"3 R5 Y: }3 `# w: ^' L2 L
setxy random-xcor random-ycor
2 }4 D) J* Q! S1 eset trade-record-one []
' }9 I) d$ Z$ F
/ s! n& W6 R. x' Y- a) E
set trade-record-all n-values people [(list (? + 1) 0 0)] * j6 u0 k& F5 j' p

3 y, @5 H" J" _' N1 i! dset trade-record-current []
! y% {% k  C3 q1 K+ C9 }5 Tset credibility-receive []2 Y- |9 |: D. T7 \0 Z; K# W0 g
set local-reputation 0.5
! w, T7 Q8 m; S/ d/ `3 Pset neighbor-total 0
$ y* J' ~! o/ Xset trade-times-total 0
; N5 S8 Y0 B" Lset trade-money-total 0* H3 p. Y8 U, Z
set customer nobody  M! ^2 n5 J- k, |
set credibility-all n-values people [creat-credibility]" J  \6 Z: r8 b( q* k
set credibility n-values people [-1]! S0 M$ f) }' Z' G
get-color
9 S* d/ q6 B* h4 f) U" e

- q5 w! ]) W! K9 b- ]" l  Q: `end; f& ]5 K( f7 L3 ~1 q4 I) ~3 c
4 y( Q  f& c) V  X; P
to-report creat-credibility6 P& v  X: |: X  {* l4 O+ S( S
report n-values people [0.5]( A( D2 w' c8 S& T4 R+ ^
end! C- O1 m1 [8 ~6 ~: d/ f% J; I

& ]  b( a/ Z: ~to setup-plots
7 _  K& I& A$ a% ?* ]' @
4 v: s8 Z+ J8 ~+ yset xmax 30
0 K' J1 }# z( Q) J5 J6 q* G

2 F- @0 n" u1 N0 f4 xset ymax 1.0

3 i% |9 o* |; Z3 P8 i- K% K' T0 q8 b/ U- a
clear-all-plots

6 e# O! _" a# }$ a; J" @' T  P! S8 F/ C9 L4 c) A* H% W
setup-plot1

% {+ g/ R/ T7 h* i- y4 T5 y, `5 e$ u2 |
setup-plot2

& a8 g$ l9 }1 _3 e/ j
: u5 u4 e/ A7 ^! @setup-plot3
/ N: U" v5 `, Q1 |  S
end: {: ^& D: P9 h+ j- k
9 `% l# [* M% \/ r( ?( k
;;run time procedures0 Q0 N+ @, W) @8 h0 p- R
: ]0 b9 U. q/ {, y: j, Q4 o
to go  L5 W* B; t# o
. [' W/ U# ]/ E+ p9 m4 C: v
ask turtles [do-business]
" n9 ~7 e0 d' V/ c9 |7 T/ R- [: v* u
end7 D& K9 L. Z8 h' t- q( U

! Z. R/ E6 _, D7 V  u' |+ A, Tto do-business
# k5 G6 q4 R, ^  d% l* `* P
7 }1 n: L6 [& c) M0 C2 i

$ a% y+ Y9 C7 t) Xrt random 360

% a- [# G2 x; v5 v, P
' j. v3 c! W/ a2 bfd 1

1 }1 U. z+ N. f" B! v1 l% [2 Y8 u
ifelse(other turtles-here != nobody)[
) }) ?$ A; w9 {- j
* c( I. B6 X" D. H8 P( i" M
set customer one-of other turtles-here
9 s: Y8 R" d* U+ f! K1 w5 Y

, a& h$ Q" Z+ v% W* E;; set [customer] of customer myself
2 P) s. b# B' m. O, D
2 \$ G; A, f! p3 ^. w
set [trade-record-one] of self item (([who] of customer) - 1)  R( g6 R% ?. j! k
[trade-record-all]of self
) x8 i3 c6 v% z0 U: m;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

- E1 e( l  B% E/ X3 P0 K
2 T' T4 j( q6 F: eset [trade-record-one] of customer item (([who] of self) - 1)
1 f' [5 _) B, @2 {" u8 H8 o[trade-record-all]of customer

6 Q! e6 @/ v. U/ ~! R; [0 P- S' \* t7 |& h: Q: X
set [trade-record-one-len] of self length [trade-record-one] of self

8 k) x3 f7 O, P$ g5 b* r9 G2 q( A! H6 Y8 Z
set trade-record-current( list (timer) (random money-upper-limit))
! Y+ _( x( ?( }! t
9 n( R+ _  r4 w. `
ask self [do-trust]
6 A+ @( j6 M) T( b;;
先求ij的信任度
1 o4 F2 p* j1 b9 `4 }6 g8 O0 L2 V5 y  V$ c6 q% [5 g9 g" A
if ([trust-ok] of self)6 g' y( o, p: |  g! M6 E+ C
;;
根据ij的信任度来决定是否与j进行交易[: `, ^: e5 M2 D, }" k  K
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
$ Y, [; _, M9 c* @  t
6 F" }$ W4 C: \( O[
6 u& B: I7 Q5 q! T. q
8 n4 P) f- M4 a8 }
do-trade
2 B- F* p2 H2 x# Z2 C' k5 L

2 t0 ^6 g, h+ F% P& H( b7 [6 x$ yupdate-credibility-ijl

1 H* R/ z# q+ `7 i0 {  S
  V* R# Z2 `2 F! H) R- |update-credibility-list0 v# J. O4 h% h, T$ i
: N1 |0 Z3 M. r" l0 i3 k# Z

' e  e$ y5 O8 k9 }3 u" Tupdate-global-reputation-list
# k3 {2 ]0 U( j
+ [, {  s. Q" G; X  a
poll-class
9 |* g& q4 G% x+ |# |
0 b% E, D9 ], C& g
get-color

- m- P( u' L# {5 g- u( q
- J. q" X5 p4 T' l. |]]  |& J2 J7 N& ]' h

9 o( L* k8 I  G;;
如果所得的信任度满足条件,则进行交易$ \4 r# O" C, J6 P
1 I# L$ t2 g. o" V
[

* M; `- P) s& l9 i, h1 l) L) f/ [$ Q( e2 S
rt random 360

+ @  H/ ~' Z. o- {7 C8 I) j' U6 ^9 m
( J/ F' C0 Z& F& [fd 1

8 B# T  ^, d3 l( S# Q' A
% T* V3 v) D* u9 t1 Z]

, f) J4 F7 ]* A5 \' Y
$ J0 F& `0 J- h. M# Uend
( Z& r. S6 j1 I4 g

1 l! i% G" p* \! C" h* }+ y' kto do-trust
: i0 E" }' B/ ~+ L# eset trust-ok False
) _# w* I: b% [$ C1 j* Y
* E5 x) Z6 J; }' d1 r" O
( }: s! p' s  O! `8 g4 y/ J
let max-trade-times 0
6 T, S" T* L6 a$ Y  qforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
& [" H1 ?( e2 l' K: c2 ]/ Rlet max-trade-money 0
: c- \# d2 v8 b, c2 Nforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]], ]9 i. Z6 q: C) W) ]1 y& A! b8 W
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
! c+ }1 p/ l3 r% j5 `, K
) B4 R1 {6 D+ @& C* c, [  G* R  i
" Q( v+ w1 D/ }3 o. S& N
get-global-proportion: h* k" J' ?" j8 c7 B( ?
let trust-value; k& ~% y5 m1 ~8 t- T
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)

+ J! m0 b! `" [1 Q$ dif(trust-value > trade-trust-value)
' Y- E  R7 A# F/ v[set trust-ok true]
! \/ E9 b7 \! ^! @; B  h+ Kend
; D5 F3 [: R: H$ u& B% I
2 ~6 d9 n- A1 R4 S4 Xto get-global-proportion
, g9 q; [- S% G. zifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)/ f& F/ O4 p9 z6 i* B0 ]7 I, M
[set global-proportion 0]
3 I6 b. {; |+ s# r[let i 0
5 j6 K; v( p1 x( v" r. o' Dlet sum-money 0
) K5 U! E, Z# Iwhile[ i < people]
& D4 Z' G0 ]3 L3 i+ k[4 F, \" W6 N  ^5 i+ \
if( length (item i
  K) ]' I8 Y) ?0 T1 t5 ^0 s[trade-record-all] of customer) > 3 )

. g6 g6 w. R0 x* o# H6 k[5 E9 @3 v# D3 l
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))& g8 v$ z1 D0 _! ]% w
]
2 y+ Z5 o& V9 l4 b* X]9 {/ }' t& s5 U$ }% I2 ]; N* t
let j 0; V; N1 e5 f4 g# C
let note 0
6 E- Z. }. n$ ?+ \" u6 Zwhile[ j < people]6 [+ Y6 W3 T$ i5 l0 p- `+ W
[
2 _( S3 t, g! Z* vif( length (item i3 u) w2 Z+ N$ c- J" ]
[trade-record-all] of customer) > 3 )

9 q; w. l7 o. l[
5 W. \) B: _9 J5 t5 G, T% r0 Difelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
, N. B4 Q4 G* K! o7 S[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]6 J, O# S3 }& |# x  \4 H. C; m
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]+ b. K+ p. u, h
]% ?$ b" ^3 `. M6 _0 T% V) }7 B; m* j
]
/ P; P( ?2 I! S* r* nset global-proportion note
9 O- Y( a0 |3 \4 ]- R]
8 E( J8 g0 {# {% ~! J5 @% A6 s" z% `end
, {- H1 u& b! B9 ~$ h. T8 g  p) ^
% z! R* A# `+ L7 w* R0 Hto do-trade5 z6 u! N& X2 Z# c) Q4 f4 X3 I
;;
这个过程实际上是给双方作出评价的过程5 J% j+ W; g" B- s( o  z
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价5 n2 I* V; d1 ^0 I6 ^/ Z
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价* }: G) h% t6 W( @3 f$ \
set trade-record-current lput(timer) trade-record-current
6 F% ]: O6 G1 Q' n;;
评价时间
7 K* K% d/ j* s' `& B" l% b3 ^ask myself [7 A5 f7 g  ]1 S! Y
update-local-reputation/ H, @( ]# x' r9 @; K1 \
set trade-record-current lput([local-reputation] of myself) trade-record-current
, _' A+ e- ?0 l. l/ i* s0 B]
9 h; D* M& L/ L/ p' t- N0 Z3 [set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
. u& p8 U6 X# n( V1 V# I% g;;
将此次交易的记录加入到trade-record-one1 }. \6 F6 ~2 |# h8 G
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)8 t. b9 M+ x; s  e
let note (item 2 trade-record-current )
5 L( x, K. j, i5 N) I# hset trade-record-current1 T) A( [" z# j" x/ u; H  \8 c
(replace-item 2 trade-record-current (item 3 trade-record-current))

7 l+ D) L& _' u# o5 fset trade-record-current; }+ _' j/ z- b
(replace-item 3 trade-record-current note)
) p8 K& h" L3 s3 _; c6 J% z( C. c& s( n, b- W3 u) n( Y

- m# e) w$ l; M' V6 aask customer [( l' @" G# b2 K" n4 k( Q
update-local-reputation- ~/ C, A8 @/ G" f
set trade-record-current2 f9 ?$ ~2 m/ g! S
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

+ y* y* ^( I, N% G]/ |. j' C3 D  E$ _4 R$ B
8 _4 M! t9 `" y1 F/ `! ~

0 k9 v5 h0 Z! k" Qset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer' w6 s0 [7 U0 C5 [1 @2 a0 U0 g" d
, Y1 t" E+ _+ e& [5 ^. L+ M
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
; z. {+ ?0 i- V) {3 s;;
将此次交易的记录加入到customertrade-record-all+ Y5 x$ {0 R9 I  K3 Y. S# e: i
end7 J8 T: \* S, x7 t& }

& l3 E5 _  J, n8 S! O) s0 I1 eto update-local-reputation; m; o7 v4 w; i  d7 `& ]* j
set [trade-record-one-len] of myself length [trade-record-one] of myself
( \( u& h- d2 R" S" s% C) @3 `+ X5 |

3 f( e; E2 Z( i3 E( v; r;;if [trade-record-one-len] of myself > 3
  l" Y9 L) C7 c: y' q2 m: D
update-neighbor-total+ b0 D9 D1 S/ K7 k) u2 V
;;
更新邻居节点的数目,在此进行  O# Q9 _- ~0 g; E% e, i1 |
let i 3
* |" e' I: g2 D- W' R/ Blet sum-time 0% A9 G) B$ y( G8 Z" |3 g: N
while[i < [trade-record-one-len] of myself]1 m' f1 y: z( H3 M' `& [
[
& }2 P* E5 v8 Y" D  Nset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
% z$ ?" W9 k$ n' r& M0 R* w- Q& hset i/ A' U2 t. L# [
( i + 1)
9 H. r/ `! V8 _% N+ z
]
% B8 H: P2 Y* P- elet j 3
0 ]% I+ b' i; x# w- S9 Dlet sum-money 0; M' f& ^- }5 \1 B. M6 q
while[j < [trade-record-one-len] of myself]6 v! J9 O" x" R* E
[
8 g. {) m# o6 h! b0 pset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
8 f4 Y( o) ?; o6 h* G3 Y. eset j/ I" t7 s# P1 o  ?
( j + 1)
+ ^2 q# a! A% Y: q: H; R
]5 F! `5 h8 y' H6 r- \: g6 u9 B
let k 3
3 y( q- s1 c/ flet power 0* ?9 _2 N% E* S
let local 0
. q9 ~0 J: \: p& [# f8 E: z2 Gwhile [k <[trade-record-one-len] of myself]
7 [1 K- Y) }4 Y9 A' ~7 E0 ]* }* p[' @, W3 N. P2 ], F
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) 0 R6 y+ Q0 g( h& J  j  W. U
set k (k + 1)
9 I# _( P9 x- `" W]
" y5 Z5 Z' j+ I) z, _1 f7 z: @+ f. eset [local-reputation] of myself (local)
3 B0 N. ~) m2 r% A8 q0 m/ E* k# Aend
: y# L) u* V) x& l6 {. L
5 Y* V% H! x. r' w% j8 Pto update-neighbor-total
1 j, a* r) ], \; [$ m9 K9 C$ E& x8 Y5 R+ G5 M+ e, l
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]2 H; R% D# Q% ]7 T4 `7 ^
2 }1 I0 C- g5 Z0 }4 _
6 C( f) }! L& E0 d; g
end
% [5 A% h! S3 E% L$ E5 \& H, ?% u' @
) Z6 R1 r% b( F. S3 V: ~% x9 hto update-credibility-ijl # i2 u3 s1 `3 J1 i' j, k. [: Z5 Z

) a/ y. S, ]% g0 n: q( t8 x0 j;;
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。
2 q5 d# n7 l' v9 G4 {let l 03 _+ i+ k* v$ a+ v4 c. q
while[ l < people ]
. Q( Q8 ~$ y6 {: b;;
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, P$ O, ~; x% g, c$ Z
[
% N* V4 M% T4 m& `( Dlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
4 A9 R" Z( ]% u0 v. f. Wif (trade-record-one-j-l-len > 3)' ^7 b& M% n9 K8 A  K3 L7 V9 Y( Q5 L
[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
+ O4 G: r9 z( Slet i 33 c! P( l& m5 i% D
let sum-time 0# k$ M" W. c* d8 X) C" |' w. G' k
while[i < trade-record-one-len]
( k9 O! C* z' @5 t, I[$ W  {) Y" S' f& H+ q& k5 a
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
5 }5 \* Z0 u( x0 l1 Kset i
% u7 B$ W$ u( k/ P  a7 D( i + 1)

9 B+ Y: w9 N3 U( n* j5 r% O6 Q]5 l3 n6 R" P1 h5 U9 ?6 \
let credibility-i-j-l 05 d. S9 Y( V- r; G& C* E8 ~
;;i
评价(jjl的评价)
! l0 U. d& M& Blet j 3
8 I7 U* L2 U* j: l- V: wlet k 4
" n  E2 U- ?9 Mwhile[j < trade-record-one-len]
  g/ e$ W/ F; s: J. ~[0 V! J8 C3 v4 c
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: W7 ^" w  x& F( \+ F, X2 q/ 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)3 L" c/ F0 z* N; Q: [8 X
set j
1 K3 z: g( q" I& o8 Y5 U+ Z( j + 1)
  f4 v( z$ a3 _* E9 {1 W, Z+ e/ s
]
) ^+ i& Y7 i% |3 ~1 B; T3 P( Tset [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 ))
3 K4 Q7 }2 E( W2 W9 A1 ~& @( q) o: @/ Q( h

6 L4 @- ~5 Y, T9 {. ]let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
% A' c( i. [' i+ `4 y+ p! m2 K;;
及时更新il的评价质量的评价
* N' \5 G1 d1 @* Pset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
! g: R) K( r6 r% p" B( z* p( Kset l (l + 1)
' L, C& l* U5 g]2 X7 p! h7 Y7 i; a+ K" m: X
end
4 E5 I1 I8 _* |+ O
+ {3 B- T1 f  X8 Z7 d) F( `to update-credibility-list, N: }/ ]4 a' q) |- \
let i 01 z- O0 i9 J' x! o2 C: _( N' r& c/ Z. S
while[i < people]
3 w1 c4 a- g" P, n" u& |1 L  Q# D: ^[- M4 b( e9 k- B3 h3 |2 \! B
let j 0, V0 u+ \* M% o
let note 0+ s8 a! U% W4 V
let k 04 `/ l! g$ J" N
;;
计作出过评价的邻居节点的数目9 @* n6 T: z. n' F
while[j < people]8 }3 t- I7 k9 x2 r8 A" _& l  g
[! p6 r5 |+ E4 T( g0 P  {
if (item j( [credibility] of turtle (i + 1)) != -1)
( i( U1 k; i& x+ U/ @+ a;;
判断是否给本turtle的评价质量做出过评价的节点- s$ `- G( M6 t2 ?. i$ s4 {
[set note (note + item j ([credibility]of turtle (i + 1)))
; i9 r2 T# i$ H;;*(exp (-(people - 2)))/(people - 2))]

5 D2 w, {! y/ q5 Qset k (k + 1)
" V2 R  F; e8 _, J]
8 r- O7 X: ^& U- i7 u0 e7 Rset j (j + 1)& x$ @  U6 l0 p  x
]+ Z. h7 m! l3 N" m1 x% `
set note (note *(exp (- (1 / k)))/ k)3 q2 p( l; o3 @5 J( A' T' a
set credibility-list (replace-item i credibility-list note)
, V1 t6 V( T- m9 S1 e, mset i (i + 1)+ F$ @  F* z  K4 \) J
]
# _  D# r- W/ `* C4 Tend- I+ M, d  I/ H' i# U: u8 k
/ O9 I% M3 l3 q: Q
to update-global-reputation-list6 T% `7 v/ C' R# Q
let j 0
. E0 e- b  c  A5 Y. ewhile[j < people]# {% R9 F) q! S+ R, Q% M, ^) n
[# r7 W% K, J# Z! T+ G: Y0 d+ l3 O
let new 0
% p. w5 s( [% J;;
暂存新的一个全局声誉: ~. U0 [' _& c& o2 Q  v# X
let i 0+ ~5 T0 e3 L* |0 |- ^; L
let sum-money 0
: ?$ m! M" E0 ]7 x* j  ^; ]let credibility-money 0
& V; F# K5 o# H1 d( w, Wwhile [i < people]9 V9 S& O% G( g. L8 \; q$ ~
[( p: s" A+ M' M8 ]) s! t8 ^1 j
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))1 y% ]4 P8 O6 h3 V/ K
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))% j! x9 ~6 E# {
set i (i + 1)2 l4 L- K5 q% A* V
]& F! e# z/ L. H# ?
let k 0
2 ]+ m/ T) P. U* A0 q6 ulet new1 0& m7 i0 u% B/ i. O
while [k < people]
6 W- s; R, V) c  r[
! w+ j) H1 N( e0 I& kset 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 p8 m" d8 K! b% n  W
set k (k + 1)" i" u& c3 v) a2 W, N* t
]
+ Y5 @; d9 w1 Y! `% pset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ( _& u5 b  m: s4 a' h
set global-reputation-list (replace-item j global-reputation-list new). z! }; x: h0 O, E$ s# C' {
set j (j + 1)% z5 U4 z5 w9 h5 F- c: N( X
]
9 S+ E! r! u) v, H. P* xend
3 y. r7 R; V- f
7 u) Y2 G4 {, r' n; Q
$ V! z9 C; @7 V' D2 j
. Z4 q0 d5 Y7 G5 i, {9 ~+ X8 vto get-color
' M' ^- f! \+ h9 P' l# f4 r2 S7 N( M$ A. S+ P
set color blue
# g- t8 G" q" h" e3 L
end) G: o' A/ ~* J( T/ Y

: n% E  x/ v6 e- H  C5 uto poll-class
- v9 h9 M' U) F" K  Qend
- x+ T  Z6 j* f. t
* ]4 Q, C/ S- B" f* s# i; eto setup-plot1
/ f0 A9 z% [% F0 p
# E5 V% v" s! w+ c: Fset-current-plot "Trends-of-Local-reputation"

5 X6 I  e# z' N6 E
. t  L0 ~8 o% m) Q; Zset-plot-x-range 0 xmax

$ _' i% r: m  }  m; |6 z5 E0 ?" E' o8 x8 W
set-plot-y-range 0.0 ymax
! h7 i$ D; h9 }1 m7 M2 p& u2 E
end
; ?6 m, a* y- K: d. q
( }2 k/ c, `1 ^! r* {  jto setup-plot20 p8 ~6 P+ Z! j3 ]2 J. h0 X

5 l1 M0 H3 V0 J6 \9 E$ D6 xset-current-plot "Trends-of-global-reputation"
+ Y9 [% g  ~( i- j, y6 m+ G* B

% C, |1 U  {& M2 Yset-plot-x-range 0 xmax
7 E) i1 w' e# d9 K
9 H7 r3 W% w+ p- e/ x
set-plot-y-range 0.0 ymax

# D7 d+ X# n3 O. t0 T' D7 V' q* V  rend; l* m; i" E7 c" I& A1 C

. n7 m7 K( e0 r9 H  m& A+ jto setup-plot3
6 y' I3 C7 c) |/ J7 t* w6 j: _
" K# O* n0 r( k8 k) E% H4 ?set-current-plot "Trends-of-credibility"
5 x3 M$ p+ {3 O+ Y
+ k' n+ R$ L$ ?; ]; [
set-plot-x-range 0 xmax
0 f/ t6 j) U8 ^  p( T' N
8 H# l0 v  r' I' i0 ^' f& s
set-plot-y-range 0.0 ymax
. X$ D2 b* q1 u6 `+ A
end: f9 e  o  |  |" S  F6 T

* v$ }' m0 \) R' h! sto do-plots
' z. Q; N2 _7 A  m; n1 W1 Zset-current-plot "Trends-of-Local-reputation"9 g/ y$ B" @: o, M/ C7 n
set-current-plot-pen "Honest service"+ s# T" o* M8 V' |6 t( M
end6 A# k/ I; d2 G. c. a  f- o% Z2 n
2 x; C% |/ |7 I, \
[ 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.
! h2 j" n) D" C( F# m
8 j3 [) r0 W6 ^+ L# o2 E* O" E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, 2026-2-12 13:22 , Processed in 0.020512 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