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: 14562|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:
% p: A4 p% b9 p7 K7 X" Eto do-business 8 i+ j( q8 }! C: {  t& i
rt random 3609 _% a) r$ I4 s' z9 {! s
fd 1
$ K; T/ ]* T$ B: y+ j, t1 M ifelse(other turtles-here != nobody)[
+ g1 `7 y/ B. b4 @   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.
; s9 h" e2 f/ m( s7 F   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
  z! {& {& K' g6 Y- p9 s& N   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer/ A3 j+ ~5 }0 f) v. i
   set [trade-record-one-len] of self length [trade-record-one] of self* _1 R. t2 ?  u( G0 T
   set trade-record-current( list (timer) (random money-upper-limit))
. y9 b# `! u. w1 y% B
4 g& `# g3 F5 D1 ~- N" h* @! d问题的提示如下:$ y& K; W* t( o# [% i3 M
/ r/ E- m& _6 H1 b3 j
error while turtle 50 running OF in procedure DO-BUSINESS
6 ^9 Q+ Q8 n5 T) |  called by procedure GO
$ k- S* q1 J! wOF expected input to be a turtle agentset or turtle but got NOBODY instead.# ]( q' U8 V. z7 |" M/ L/ r( y/ R
(halted running of go)
4 C4 v6 p5 ~3 Z! N1 x' P3 Z4 D0 Y# J0 m7 @8 }; x, V
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~~
$ ?1 E: H  w. P0 i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
. G, v4 s! }8 k2 Jglobals[' v8 n4 A. L  B9 i* i' S* u
xmax
5 L1 g# l7 o5 m; x* c" a2 ^2 L& fymax& j6 G# T' a6 }% T6 c
global-reputation-list* q. l8 [( K, q( o. u6 q
% o8 j* j5 D! t0 A: P' F; B2 I2 ^
;;
每一个turtle的全局声誉都存在此LIST
  h4 h) D, t6 O$ k/ s6 m* ycredibility-list
* [2 L( _4 n0 c5 r2 F' ~( I;;
每一个turtle的评价可信度3 [' R6 P" w! s3 B
honest-service
8 f; a7 O2 Q, |unhonest-service
# ~+ c4 D. j5 p  F$ B! P. b7 ioscillation6 h/ B! N& m7 S
rand-dynamic" ?; `3 R  |2 R0 x! {' Z" {
]
/ }' s- U; F4 z' p- {1 j! i
$ A% v9 K# i5 I; l5 e$ Hturtles-own[: e  `: w# Q/ I1 E- ~% G/ \
trade-record-all1 t% M% [% J  u
;;a list of lists,
trade-record-one组成4 L0 t! w4 q5 ]* o+ e$ C
trade-record-one
2 H9 f8 ^7 E& K5 G! 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& z2 Z8 g) ^, L3 t) w+ }3 I

) o. O6 q7 w2 Z" S0 u/ O& R;;[
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]]. H" ~  s& g0 w5 E& D; A; 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]
# a1 {# Z! J: L2 u- N+ T+ s/ ?# wcredibility-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list5 E; i4 _% q2 B/ }  I& x5 |
neighbor-total
3 E% L4 M+ J) Q;;
记录该turtle的邻居节点的数目
' F2 I2 t8 y+ ~trade-time/ ?: S  M7 O7 {% D
;;
当前发生交易的turtle的交易时间
. A1 I' t% }' ^1 i2 fappraise-give
( [% T9 @, ~. T. j;;
当前发生交易时给出的评价
3 g  [8 H& @4 ^9 t/ W8 b$ wappraise-receive
* v+ L5 v" ^* W7 h4 \- s;;
当前发生交易时收到的评价
0 P) Q  q! X8 Y. q0 m9 Jappraise-time4 Z3 J5 P7 m/ N. N  F! O( p
;;
当前发生交易时的评价时间
6 X/ f* T% @. q7 z; _local-reputation-now;;此次交易后相对于对方turtle的局部声誉9 _: r) K" ^. q
trade-times-total: F6 g7 }- i3 f: X2 L
;;
与当前turtle的交易总次数
% x! D9 I! y5 Etrade-money-total  X) u' N0 B7 E# ?
;;
与当前turtle的交易总金额
+ Q5 ?$ |1 H2 K6 w& \, Z. Plocal-reputation7 }$ l7 O! p: E/ v+ }5 ~# `8 q
global-reputation
, K# M* u! r9 D& Pcredibility; K$ U, n3 v+ N1 T6 J+ ?7 d
;;
评价可信度,每次交易后都需要更新
  B+ Y& C& E6 z& g6 fcredibility-all
, R1 ~5 p; p: p( h  V- X;;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; |$ j0 m% I' j4 \" t( ?+ E

; ], J9 p2 b1 k& b+ F/ |;;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- D7 e2 c& T6 p
credibility-one8 x+ B( Z+ h: Z9 N! j
;;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
/ S  `) c& l2 B! k- K4 O, h* pglobal-proportion* |7 X# c+ m7 H5 q
customer1 t; D: U! c8 d6 G. R$ B
customer-no
+ @; i% w  p- I9 C% V+ W7 y/ htrust-ok
/ H) e" O$ W9 I* [6 Ntrade-record-one-len;;trade-record-one的长度7 k/ Y, s5 `4 z1 [. V
]
7 T' r- R( r7 c; `& g* v  ^; x# B/ i1 m% f
;;setup procedure
# H; L3 L/ B& b" J4 d, {5 n& G! L. C+ g6 Q
to setup& Z) ?) r# h- Y4 k- \

: T7 ^( K1 W4 eca

' D5 A2 S+ R' B4 z' I$ B
' Z: z. D: H  o! Y& [initialize-settings

) H" M- X3 l0 N2 G* w/ X2 @" G; k
6 m- F$ u( w" w# s) b6 U' n6 Xcrt people [setup-turtles]
9 Y5 x. i( }3 q6 Y8 ~( k5 Q3 w3 F

+ r" d% ?% J  m" v# C$ qreset-timer

( j6 _8 j2 A7 u
! y* R. l  t" m+ ?+ Upoll-class
3 ^2 w/ b* y+ I! W+ u0 ]) R2 k9 Z

% X7 m6 O$ n. s8 `setup-plots

( ^, O; C5 l% @! Q9 G2 E& s" y9 c  c) l3 t# F
do-plots

7 V% P! V+ m" I2 n: ]end- ]- O1 @$ @; G7 I

9 B0 c2 |/ ]5 x. yto initialize-settings
/ j; I) Q0 B3 c! {
0 N. P4 H! n2 @4 i% D; V* xset global-reputation-list []
9 s* B: B( m3 o8 H
# m9 d8 G( z- F
set credibility-list n-values people [0.5]
: M% ]% ^' e, I5 h& {/ U8 Q9 Q, X
8 D. }1 |) N0 P0 F7 X* p
set honest-service 0

1 ^7 O" T/ f3 n7 Y* j9 h& g3 F( e! R* X. T7 P6 s3 G5 R7 e
set unhonest-service 0

9 f3 w' i7 P8 B3 b' [# D
, g3 s/ \8 p, ~/ l( b7 R9 bset oscillation 0

- C9 N. G, m5 S1 i+ _+ w
. V# A, S2 t/ \set rand-dynamic 0
2 j7 z+ E: p! M3 t( J$ C1 s- {
end9 R  t8 z% Y& m  b8 X
+ O  `/ N* v3 s' {
to setup-turtles : b, x' t4 ?( K' p9 L: u
set shape "person"
2 X4 j4 g3 I4 Bsetxy random-xcor random-ycor
& b' L$ P7 b$ Lset trade-record-one [], o; }! V3 a8 A$ v- K- W. N
$ W8 H8 S5 R& [
set trade-record-all n-values people [(list (? + 1) 0 0)] 7 p0 o2 e5 o# T

( |: g% z- z9 T% @( ^( ?set trade-record-current []$ s5 ^/ Y. e9 d% y
set credibility-receive []
: n. Z2 q2 o4 Qset local-reputation 0.5
5 |- M) ?6 ?- `6 Dset neighbor-total 0
* d% r$ E5 f1 ?/ x5 Aset trade-times-total 0& _5 q" Q4 S# G/ e0 X) E6 J: F
set trade-money-total 0. l2 j6 Z" g# ~
set customer nobody
. T6 t6 G0 }" c/ E$ aset credibility-all n-values people [creat-credibility]
. v- q$ H9 ~0 W! z/ rset credibility n-values people [-1]$ G! e; g, W) [
get-color( i) ^# E. G4 e0 u) a4 V( F! T. u

! h% _0 _( H( T2 a% w: wend* E( p, ]6 \$ v2 a
2 x/ Y4 C/ e! |0 H" y0 n, k2 f
to-report creat-credibility
/ X! y7 e& L# t" `4 ^/ J, ]report n-values people [0.5]7 a. l* C( z1 u& y7 q: l/ N+ F
end
4 g+ Y# x# E4 G  i6 a9 ?% ]
8 j: R/ ^3 m; N0 x  ?, cto setup-plots
9 N6 G4 b# H; Y$ r( r8 |; R4 o# d6 g& \5 l8 ~& D. _
set xmax 30
5 b- m4 H9 z# Y2 s6 F; z
4 {2 r/ s" {# j$ b' G
set ymax 1.0

& {; t3 Z2 o7 w4 L  Q( r
+ z) X- R( A* l# m1 H3 M& E: aclear-all-plots
( m3 Y7 ~  I% E2 y' {# ^- {1 V

& D. j5 |, e) osetup-plot1
! S; g& I9 t6 x

8 Y7 |! g& F  G9 t! esetup-plot2

* v6 J+ E  X3 A& O( E- R  d1 r7 w5 \; [0 A- v; M' a7 j9 U
setup-plot3
; [6 ^! x' X# b& W1 W- M: `6 S+ B! v" p
end9 ~- L# T$ P: P" h" t+ v
) g6 A) V7 q+ y
;;run time procedures1 X& o9 P7 J1 A& {( L: _

2 B& j  E  e- r2 Z* O% uto go
5 H8 E0 D( ~% s- K' u) g7 V
/ y) i4 t4 N* w1 P( xask turtles [do-business]

. c2 e  e( l6 q7 B9 t3 qend; I5 v5 v* x# y" q
# A% S$ e+ [( z3 R
to do-business 3 X: R/ D8 B0 F/ l

+ d5 m( v# Y1 ]+ o2 `  W( n8 G
9 N$ t) H+ H+ T& O7 z" ]rt random 360

  K  S8 e9 @! E( z$ O7 ^
. C  ~/ ^+ H9 [, ?fd 1
$ @1 m2 D! I3 e/ B, f

$ r% n' d" b6 b9 T7 X/ Oifelse(other turtles-here != nobody)[

# V9 `' C7 J# \, S! ]
: w) @& T2 ]  o; G2 qset customer one-of other turtles-here

/ a/ |8 c4 {1 p; E1 H0 D1 W# w' I4 s: K, G, w, [+ z6 V
;; set [customer] of customer myself

0 B$ |& M/ u8 c) z2 p9 c0 M' _: O. m$ B
set [trade-record-one] of self item (([who] of customer) - 1)
2 Z+ A  ]8 a/ a( I6 r[trade-record-all]of self
' X) R) f! Y' r/ P# ^;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
1 E/ b7 b3 n  ?) W7 ]

. M9 E0 u5 C; Y! O2 mset [trade-record-one] of customer item (([who] of self) - 1)
8 f7 Q! A" I1 z: ?[trade-record-all]of customer
# z3 w$ t" q9 s+ g* }
4 s! R7 q' F( y( E
set [trade-record-one-len] of self length [trade-record-one] of self

' _; |( B4 ^0 b. l" b/ I3 C# H7 O, Y6 U: j7 c* ^
set trade-record-current( list (timer) (random money-upper-limit))
& |1 v; ~6 {5 l
7 r0 G, q/ }4 X" G8 V
ask self [do-trust]
* ]3 n5 Q3 w- D  Y2 J' m: `& M7 P;;
先求ij的信任度' D8 }* t( ]! R  n8 J$ [# f( D

, @5 s6 q* C7 j/ Z2 {* f* K% uif ([trust-ok] of self)6 B6 N6 Q6 ^* r( f) r7 _
;;
根据ij的信任度来决定是否与j进行交易[+ t  V# K6 D+ e! q% t: X5 ]
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself, w; K2 w* v- ~5 G( s! G
. _* w4 N3 w0 N( B# K
[

, U7 m  G0 }. Z; Q
" v) u& N: H* Ydo-trade
, k- u! Q6 E; E- e. G* `+ q6 @
. q/ o8 z; C5 E" h% z& ]9 Q
update-credibility-ijl

$ V2 D* m! n- b# V  _  Y
6 Z5 Q4 u1 t; Z' ~: D2 rupdate-credibility-list* g+ j, y" c% B
% K  ]8 \0 O6 p, Z  u7 a  m

' A$ q2 X! c1 Z+ ^; N- zupdate-global-reputation-list
/ i9 a8 V3 S0 r4 D
) L$ H) O* h. J; d
poll-class
4 u5 Y+ X3 `8 \& Y% J
3 f) D. Z7 a/ o% ?, C7 ^
get-color
* o2 D7 w0 f  [; Q8 K: E! _

) B2 I- j! q- J+ u$ {]]
! u' x' C6 _1 ?5 c$ _
9 P, {0 j3 B2 F. L% |) v9 a;;
如果所得的信任度满足条件,则进行交易
+ f- L" j8 s5 n, x$ A; M6 R
  U: Q# l! c8 V3 B! q[
. \/ p* b+ J8 O* v+ D8 k# P, X
/ ~) v0 }$ d  J2 S/ B* |$ C
rt random 360

8 i4 r$ z% O$ x
/ b# a' A  D  d- t" ]# {$ ~7 yfd 1
% u& r& p& ^1 i1 }; g0 L3 Z+ S

0 d; j" u% g/ c% E; v8 A) b]

* r, t8 h* M) `5 A; Y; X% ]# `) z# V! L4 W' P1 D  k$ J& c
end

2 N8 e! ~3 a0 [- p3 G# U
1 D/ T, s4 N- u' z' l3 H; rto do-trust / x8 Y  ^2 _. u* R
set trust-ok False
" p, u/ J* a2 k- s0 \( H7 @/ T( W4 ~* ^1 q, o

) q- r& F1 Z2 ?let max-trade-times 0" V& C( L1 h2 n* Z7 N
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]/ L# h& k& w- U3 A, A
let max-trade-money 0' O, p- c# J5 W. y2 g
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
. M4 j& `: Z! c7 I7 ?8 q6 qlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))0 G7 x$ E( N' i
* ]( {3 v6 p' t8 c& ?  d
4 D. W, e: p. s9 r& l6 l7 r
get-global-proportion; u4 m$ w& Q! R( o8 E/ c. O
let trust-value
& L7 i# k* U3 J' O0 _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)
. }9 n) t8 x% m# L
if(trust-value > trade-trust-value)" Z  b! W# c2 V1 X) u4 W. H
[set trust-ok true]; e+ @& g% ^6 z' Q  e# a
end+ J' S5 [; }# [2 G7 m

- _* r9 f4 i6 S9 @' O# Hto get-global-proportion
, x% w' T, o7 o, @ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
( o- I' I5 c8 x[set global-proportion 0]$ J" l6 j: W+ _) x4 X4 ?# T
[let i 0' I& e+ f  c* s
let sum-money 0# Z0 w+ z) _" w' I3 |+ ?7 e" F
while[ i < people]
* G# u  R( [& `" B8 K; Q[; ]! p8 N  l1 q1 u
if( length (item i! z& ^! Z% V* Z7 B, |
[trade-record-all] of customer) > 3 )
& t+ k8 C* O, l
[$ S5 n9 Q9 {  u
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
' ~. d* O: J4 S& J- G8 t]
* n: T5 s5 L' k$ [: a$ J/ |]
& k  Y% v9 S* d  H: Ilet j 0
5 x+ M( Q) D, m  `$ w* o# J0 rlet note 0
) D* P  {. D8 l9 Ywhile[ j < people]* E7 W- G1 t, I' l. u
[2 f! h, E7 ^& \# x
if( length (item i* n; b2 w9 e/ ?7 A5 j# [
[trade-record-all] of customer) > 3 )

9 n8 g0 F$ Y; ]% l[# D1 b6 A2 u, ], `
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
% L8 ]' |4 F4 o5 X) e[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
7 Y; F/ l5 G. c[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]/ q9 `  t3 N. u1 g" U
]# j& u' l: c1 g; R7 B
]
& v6 {& ?# `! K& W$ Mset global-proportion note  j2 p: k) _' }
]
+ }6 ~+ C( D, w8 y# lend: l1 X' i; _3 H
& q/ r6 S+ I4 }2 x0 i/ o8 C: y
to do-trade$ Z' J- b5 v$ p1 R9 J
;;
这个过程实际上是给双方作出评价的过程
- @5 r/ P, x, ]  a8 bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价% \. ^: N3 v$ @7 ?1 m
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价; ^1 A5 ^' a; v1 a
set trade-record-current lput(timer) trade-record-current
2 h7 X- C$ k. s) N;;
评价时间
6 v" |3 A( I7 X- D1 E+ `ask myself [; u  p/ [4 M/ L( {, J
update-local-reputation0 z9 m6 q: U- e4 ]3 o
set trade-record-current lput([local-reputation] of myself) trade-record-current! J! P7 \3 u; l  \8 u5 H
]
# w. I" j; K6 K3 z6 C4 R! n6 G5 Zset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself" J2 B' f' {2 j
;;
将此次交易的记录加入到trade-record-one
. Z( @) H. `& H6 xset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself); T7 r7 r' U6 E7 b
let note (item 2 trade-record-current )" z1 v9 M+ \  R: ~8 O
set trade-record-current
! @; y( g$ b) W(replace-item 2 trade-record-current (item 3 trade-record-current))
0 K' N: y9 N- o3 Q0 |- u6 M
set trade-record-current% b- G2 o# L! [
(replace-item 3 trade-record-current note)6 s2 L( P7 G( g- ?4 T( Z

% H9 v7 q5 s, p1 e* Y

! u: X4 K. j/ j1 n% |ask customer [5 B$ [( S6 J+ l  q! K+ @$ G
update-local-reputation3 U+ q) X( Y: s- A3 h, x: d9 c
set trade-record-current% j+ i: y; p+ }0 U9 \3 i8 h' K
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
  D9 {5 ]$ _0 C; b
]# W) E; |6 s0 G

7 U5 s) m. N- i, o$ q
9 M$ {# W/ [; E4 J0 U8 ^6 {
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
1 D! e  g! G4 M! o+ |

) G3 K/ Q, s6 z* j) z5 H. v8 |0 Lset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
. H" w! W( V! [+ [) [0 S;;
将此次交易的记录加入到customertrade-record-all0 O- U. T/ r3 |
end" [% S: _# N9 L' z
+ V. ?! C# J2 Z7 B0 ?$ G$ O
to update-local-reputation
1 k( H+ q) @* O: |5 y  V3 e- jset [trade-record-one-len] of myself length [trade-record-one] of myself7 m& y1 D0 }  g& X7 e) Z8 C8 }( Q
4 j  }' ~  E" {( s

: R$ w9 R1 w4 G7 e- E$ G;;if [trade-record-one-len] of myself > 3
  h; J7 f4 n( v0 g0 ~# f
update-neighbor-total  Y! r: P1 P# i2 S& U  c
;;
更新邻居节点的数目,在此进行" l7 ], p, w* S  k) D0 R. n
let i 3
5 M6 I( S2 e& u; Q0 vlet sum-time 0
% s0 E3 s& U6 ~. q* [while[i < [trade-record-one-len] of myself]) w7 f" ~$ b# }, {: a* E' i
[; j# a) }# c  d: J+ g6 x+ x" y  ]
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ). m8 X( H# {0 r. Q' s0 d% q
set i6 g6 M% C5 f+ @
( i + 1)
% e3 w$ A2 t2 u: s  m5 u
]
: ^1 l- N; b5 @- _let j 3/ ?" x; f7 H. u: K* v7 a
let sum-money 0& j  c* T# V. L) v- L
while[j < [trade-record-one-len] of myself]
) N% F- U/ R$ k( H[4 Y& _- h7 a0 H9 d- g
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)
& ], D. }. B9 v) l! a  rset j0 E. J  v/ J8 Q1 g1 B
( j + 1)

6 O( t( L. p% m; V$ Q]+ ^& C) X* B( \! T) D- I: q
let k 3& E( |) w7 @! `9 W: R6 h+ V
let power 0
# y1 w4 y" t* [; a% v- j/ _let local 07 O( j% d+ w7 Q% f1 Z! b  O
while [k <[trade-record-one-len] of myself]
/ c9 J% g2 ]4 |$ f[
  B7 h6 q# U8 j9 |5 E7 B0 W6 O4 Z, b  ~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 i2 Q: _, V2 x
set k (k + 1). f" c: o/ k+ b3 X
]8 I, l1 i7 u6 N- C2 {
set [local-reputation] of myself (local)
* o$ j6 A- `2 A9 v) Tend  u" y3 a" H) Z

4 u( A9 h( O- o! G& C# Yto update-neighbor-total
) N- ?7 X/ j$ m) i+ u2 d4 g
6 u% W5 H/ }# I* Bif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
5 ^3 {1 E' Q- X2 o" x- C; i0 R$ T' V' S0 A# ~

# q+ x, \7 }9 D( P" cend& {: g) c9 x$ m* x

" f$ Q. H# z0 j& g0 Ato update-credibility-ijl
/ O: t4 F; Y" u2 U' ~* G* b* X' g- }4 G- h3 d
;;
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。
1 R( j' w) _  }let l 0' V/ O. W( i9 V/ ^" V5 B( @  @2 t6 H
while[ l < people ]7 {, e9 y0 y' X( l7 G8 z2 `" e: U
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价1 x2 R$ m, [% O; o, z
[% d) n) }/ b+ D& X
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)6 _- w# v8 y7 E1 P- K9 B
if (trade-record-one-j-l-len > 3)
- [4 A" p- n5 o: z$ T! K4 |[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/ H- k6 J( Y5 L4 M7 g
let i 3
/ x& ^, s8 `7 G! q6 V3 Mlet sum-time 0
, b8 H5 h; `" H, g/ E) s" p% vwhile[i < trade-record-one-len]
% e8 _- G, g* f[- d9 H% i3 m) [) ~
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
6 J" T+ H& @8 }( b, }: r$ E# gset i' \/ C" [( u; c8 U* {
( i + 1)

9 _2 A/ N8 }# `]
9 ?' p( I4 {6 l8 {: wlet credibility-i-j-l 0
; w  R+ Z' s% ^) i4 x7 o+ |;;i
评价(jjl的评价)  q4 }8 D4 e$ @
let j 3/ ^" {# I/ \. i/ Q
let k 44 Y( ]" G- P6 S
while[j < trade-record-one-len]
. a" Y% H- |* [) I, Q[5 s* i. H6 N/ |8 w3 `7 W8 {3 z3 y( 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
/ d$ Q& o: d; n$ pset 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)7 I/ J0 E; v7 L0 q" K3 v$ f; g3 c
set j' F  z: G. t! r3 m/ \
( j + 1)
, y# O- D$ i& b9 ]
]
& j+ a6 ?& {; F1 Cset [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 t8 \0 C0 J& Q( j) P7 k% Y

, h# k" W! v. M8 W: O
0 t0 _/ X/ N" X* f+ y0 H
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
2 p& f4 N- Q) f" \;;
及时更新il的评价质量的评价
: m$ V0 V, \/ d$ P; Rset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]4 V0 ?& p1 C1 H7 I, ^, w
set l (l + 1)
! [! E  y' A% M$ j9 `: w# q]
/ [5 p, P5 W/ L4 y" Yend) u# K0 O$ K4 E. W" [' b6 i

! q# H7 ?  H; A6 t( Qto update-credibility-list
8 b1 D, U2 Z1 T) \6 u. w6 y, Glet i 0
( C" S4 }& z6 n9 [while[i < people]- o  q3 K) ]6 d; E6 ^2 i
[7 F8 F& Q' L/ r' f  D  U
let j 0
4 P3 _7 _: `0 D1 ?+ }6 ~$ @- ]2 @2 slet note 01 ?# r  {$ d# ^8 X) q
let k 07 }4 A0 J) \; Y3 Y/ \7 ]! T
;;
计作出过评价的邻居节点的数目
( R" \& i( g: I7 w4 lwhile[j < people]
* K0 D* U! A1 d2 C[
' w' N7 v1 s5 D' k4 W( L" {# c6 Fif (item j( [credibility] of turtle (i + 1)) != -1)/ \! Q! B; e  |' x
;;
判断是否给本turtle的评价质量做出过评价的节点
  C* ^7 s9 {8 _1 Y[set note (note + item j ([credibility]of turtle (i + 1)))5 E& _0 q" Q3 U$ |8 u
;;*(exp (-(people - 2)))/(people - 2))]
* w* f( P9 r& D* N
set k (k + 1)$ {, Q, N9 L/ i3 d" V# _  n9 @
]9 |* V/ E* x& g: }
set j (j + 1), ^0 o! X* e  E! |
]
/ j- D$ t- @1 [5 Cset note (note *(exp (- (1 / k)))/ k). B" t# v6 h: T( e
set credibility-list (replace-item i credibility-list note)
) ~7 u$ {4 U$ Gset i (i + 1)( M$ i" q4 H) D0 s4 s
]5 X1 Q& G2 U6 d& B$ n9 P5 N/ L
end
0 G4 m9 [; x& l. R. U  k) C' O
7 B/ \( u& b; I& J. O) [$ hto update-global-reputation-list
! Z8 P& J4 f. x8 {: `let j 0( v+ ^8 j$ q% G7 J6 C6 M
while[j < people]; W: G% [# o3 J& W# i& a
[  u: J. @6 O3 C% B) N8 F" H
let new 0
; }% o9 O  k$ V: N) Z* }1 ~1 I;;
暂存新的一个全局声誉
- l8 y& z( e2 i& r4 W& Nlet i 0
2 |3 }7 B/ F- |% y4 @, r$ h6 `let sum-money 0
9 M4 u+ c- f/ P# blet credibility-money 04 ?2 X4 T* `& a& F
while [i < people]
. s( `7 c1 B# n" [. r) I5 `6 V[
2 }8 \2 E5 C! @! m( H: k) i$ l/ kset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))6 c$ h" I* q$ O7 {. n
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
2 M0 m9 b* F/ uset i (i + 1)
+ c/ M" U) n/ w6 Z" e]  ]% V7 x0 N9 f* f$ `! R( m9 m
let k 0* b0 {  ^( @  u; d& L, J& e
let new1 0
' f1 a2 V5 G1 w: e, z5 O8 k$ U# Pwhile [k < people]
8 W1 ]7 v/ C  Q[+ `0 I% L* m/ z4 P
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)' C* W) R/ K/ t" p+ v
set k (k + 1)
( ]) ?+ P6 {7 L4 ~, A7 k* S]: I6 w8 U, e: {+ F! v+ M$ J
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
: S% d, Y# U) t; Y* nset global-reputation-list (replace-item j global-reputation-list new)! ^( {; Q4 R9 e( @& ~. A2 M
set j (j + 1)
. R: m# [& q5 _# P: y9 q* []3 t; T' ]# e/ u) y3 X. n7 Q+ \7 t
end
7 g/ C- T  E; w5 z- L
3 z; f$ j' P6 G+ T7 D/ y- k
) _& B# v# r6 j# G% f2 k# J1 r9 g; c
1 r6 w7 `% x9 Gto get-color. S" P- \5 V5 Z9 I
1 f! B) b; d) T
set color blue
( ~+ [$ g0 w" R4 [* A, h6 ?
end
' j% ^  Y9 r  G& B$ Z7 B# ^9 o: T- ^$ X+ p, J, y, V
to poll-class
. K1 m7 |+ G% K7 dend4 G/ r8 ]/ R& c+ G
: k" M0 t/ x3 `8 h8 X8 t( P
to setup-plot1+ l5 ~7 \; Z( i0 Q( p( `& v9 L0 q% k

  q8 {2 T  [: P7 g& k& Eset-current-plot "Trends-of-Local-reputation"

) H7 U3 C7 h. s4 S0 R
' L, d& g# i$ t3 j9 ]( I( W  y% l& Wset-plot-x-range 0 xmax

( c$ B  b+ A. B" L3 S8 L! e. O( h: a2 y' T7 Y! [
set-plot-y-range 0.0 ymax

9 s% e/ d1 q/ J$ K! lend
' Y& h) J/ r* j1 f/ K& g& y9 x* c
to setup-plot2
# A( z1 e" x2 E1 W/ p8 F* @7 m2 J2 h% D
set-current-plot "Trends-of-global-reputation"
3 D! u4 c2 V. |1 n) f: C

! a8 ~2 \7 M2 a- _3 z5 l8 ^set-plot-x-range 0 xmax
9 g: f* d$ o* Y! S1 u% s

/ I* t$ k8 c4 h. j- @) N! fset-plot-y-range 0.0 ymax
) }' l; |( h" p6 j$ C+ J
end
6 y! I6 }4 Y& h& s: M* _% S! F
4 i" J7 @+ ?7 |+ a+ \) zto setup-plot3. N0 ~4 i- i$ A0 `! \

1 f7 @' t( |& W. e5 r  L# q1 ^- uset-current-plot "Trends-of-credibility"

& b  u) W% n* ?: h
2 v# R  q' r3 q6 Wset-plot-x-range 0 xmax
8 ~) d7 `: O7 e- ~0 f
8 W& z! F, k' s/ u, R) f
set-plot-y-range 0.0 ymax

  V- q/ A5 D( B7 [% j1 \6 B; dend+ f4 U; K0 O# z  g* D

# d9 `3 \6 l# y" B' h0 zto do-plots
% x% V& C8 h2 Gset-current-plot "Trends-of-Local-reputation"
; F/ u) |2 L' ?- ^* Cset-current-plot-pen "Honest service"; g; b& j4 I7 t3 E4 u2 U' p
end
3 m9 q9 W4 J" g6 O7 g5 K% [; o7 e
; N. \- X9 k+ K7 _) p! V5 o[ 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.. U/ f& N4 P4 Q! J# G9 s
4 P& Q7 j9 I% l& p3 j8 y4 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, 2026-5-13 12:33 , Processed in 0.024329 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