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: 15013|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:
+ B2 s+ `' N3 Mto do-business
0 v5 G- f" n: U3 E; g  _0 C9 T/ R rt random 360
$ x. h4 D# k! J' G% t; B5 m, h! w fd 1
3 L4 W7 [- ?- v0 @2 P3 y ifelse(other turtles-here != nobody)[3 x+ y/ k4 r  G; h6 Z8 G3 P4 Z
   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.
- O; N  W3 A: h( k   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    * w7 q7 X, v, m0 g$ u
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
6 f; u$ r+ `* s; e   set [trade-record-one-len] of self length [trade-record-one] of self
' o3 L: ~: J1 K3 V/ r! l8 Y- A* @   set trade-record-current( list (timer) (random money-upper-limit))( J8 L$ L8 y# M% t6 x6 m# b3 u

: n1 g5 l3 f4 ]% i% e: z问题的提示如下:
) U  [" t% z4 K: U& M" V2 s; E5 d, {6 j0 K: T3 ]
error while turtle 50 running OF in procedure DO-BUSINESS
# E6 H- l* j: Q% `4 V' c  called by procedure GO* S) n; M3 x$ A1 j# O
OF expected input to be a turtle agentset or turtle but got NOBODY instead.2 g2 h% S' M" B' K
(halted running of go)
* i1 f1 K5 S# M6 G$ b9 p- v
3 }9 _! x5 g" A0 [( C- n+ }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~~4 u9 S, h$ Y- n6 G3 v. \
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& J: d& A/ M; X' q
globals[
* o, P) o+ l4 |, D! Jxmax, G% {: \4 W. Y
ymax
0 c, `% }$ f) r* Cglobal-reputation-list
, A7 J7 P9 s; S* W) _$ q
( _* ^; G4 w; Q$ m2 i* O;;
每一个turtle的全局声誉都存在此LIST& |1 M& }: \# l3 T
credibility-list
/ k/ Q9 U) N3 r! [+ x;;
每一个turtle的评价可信度1 F& f3 F7 f  z/ ^
honest-service% I9 G) A5 Q) M
unhonest-service
4 Z* D; b7 ?, Koscillation3 k; W6 B7 a) Q1 ~+ v& ^2 v5 N
rand-dynamic# ~1 ?* E: m6 o# q9 n3 h, _. u# L
]  `2 W1 W( r; y! g' L
" {& W8 K9 J4 }2 c
turtles-own[  T! J  B* V* y1 e3 T
trade-record-all
0 e- m3 @, o' a; d;;a list of lists,
trade-record-one组成
7 H3 `* ~( f" Etrade-record-one
3 G5 z9 g+ h$ m! u;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
0 W1 B1 W0 g" h& k! i+ u$ ]* f3 r1 z- [; }
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]. u( P1 Z; X) q6 a
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]
0 g+ h. U4 `! `/ u* {2 \) Q6 {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: U* X5 v( d, X( [
neighbor-total
( O) b* _* C! e3 u+ ]. C/ a% S;;
记录该turtle的邻居节点的数目( Q$ S# A  g9 [& ?  Y" [5 t+ U
trade-time
6 B- g4 {1 y8 }/ w/ z- E4 k; Z;;
当前发生交易的turtle的交易时间
+ g2 M  }5 o" T) ?2 Mappraise-give) ?1 f0 F. X$ l/ Y
;;
当前发生交易时给出的评价: v# D$ M- l2 `4 N3 s2 a  j
appraise-receive
2 d8 A# H. I& ];;
当前发生交易时收到的评价) C+ \  b  O* d) j3 t, G" I5 Q" }
appraise-time, s3 p# O* D. d2 T$ g: @
;;
当前发生交易时的评价时间
1 X# ]: C- L! ~# `' I& olocal-reputation-now;;此次交易后相对于对方turtle的局部声誉+ Q: e% R: X( H9 h* A8 P+ _
trade-times-total$ t& N8 R9 ~4 f' i$ I# N8 a
;;
与当前turtle的交易总次数# ^# ?2 x  B( S# I+ b
trade-money-total
. F8 ?: o: a$ d1 f. N! u4 m( Q;;
与当前turtle的交易总金额
/ q" @3 Y4 l& O" L0 Qlocal-reputation
1 ~  O: K" M2 {0 e6 wglobal-reputation- D$ e. k1 I! P3 u7 a$ J9 T
credibility% |( z! G5 H; p% n$ ^; D) T
;;
评价可信度,每次交易后都需要更新
5 w7 J3 R. `6 b6 d" rcredibility-all
5 \4 Z/ c/ N$ n0 D1 G9 g;;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. ^4 q  }( F+ s; c) @1 t7 U

+ F. T5 H( ?/ p, C5 Y;;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
6 V) o; v6 |' ]+ L' Z: bcredibility-one
& N; A$ [' i( O( J6 [;;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
9 F5 W( \; J& J3 k* `4 Y2 X' pglobal-proportion
4 E& M3 Q$ |  b7 [2 F! {customer2 t0 A+ O# ]# k8 v% K5 T2 ?0 m
customer-no$ Y, \9 v% j0 s  `$ {
trust-ok
7 l. }- j9 q* {6 H, s' _+ A; ctrade-record-one-len;;trade-record-one的长度+ a0 c6 g# V, j1 d7 M; D6 K
]( \* l) U8 l1 j, v5 _

6 J; b% `4 z/ ^+ t/ O;;setup procedure
' n0 h6 u; [; _$ G% K4 a! |
" |) Y7 z* O9 v( I* b" G* v  kto setup
4 o% W' \; ]. N. f' M  i* d  y4 i/ `; d1 S, J
ca
" t& Y- h) U" }

9 e8 W$ |; c7 \/ Y1 L& Z5 `3 W6 L5 Winitialize-settings

. p9 z* R% h8 L; \& n4 Q
) r0 I( c  `! z/ W$ T# x) |crt people [setup-turtles]

+ d0 A, a1 n, e: v' M9 Z! f! a4 Y3 w$ J
reset-timer
1 a" Y4 y6 B$ F1 ~8 r( m
' w- M7 g0 [$ G6 v2 y
poll-class
9 \* X) n; u1 t, k2 \& H& B
' F4 ?$ t9 i( B; }  p# v5 x3 L- _
setup-plots

; E3 i: a" o. a- O
, U+ c) v9 W, o7 H1 z1 N* G0 a$ Mdo-plots
' C3 Q: O& S) I% `3 B  s
end4 Y3 E% e& K* U% K

, ^* w1 x* E9 J3 F9 lto initialize-settings
, v' P7 O3 J8 @
0 r7 u( @3 N, I! cset global-reputation-list []
. {' @. g/ W: L; X6 ^. \

/ ^. R) B" W7 E" z4 wset credibility-list n-values people [0.5]

4 q. T% Z8 h1 r% Q0 W6 O% L2 {5 ~& I  G7 p. j
set honest-service 0
0 S6 i7 c7 e# v& e& T
. R% q: r9 |/ F/ \! Q2 c
set unhonest-service 0

7 E# r! n5 c7 M# b; D. w/ X6 k4 u" u7 u" s( ?! |2 K0 }4 s
set oscillation 0

; S; V5 c. k1 P( h) K- ^
. }+ s) f  t3 [; G5 D( jset rand-dynamic 0

2 P* |2 M2 y+ q6 _6 b( K2 S  kend
) B; H4 ^" R: Q: l6 T; t" o' N9 A2 i
to setup-turtles $ t# M' h( y+ M
set shape "person": n% S3 c7 F) o" ?. i
setxy random-xcor random-ycor, a8 @: R6 c& A% `2 ?
set trade-record-one []4 O* `  F9 o1 h, n! S

0 H9 k2 n4 w& x6 b1 q' p  \set trade-record-all n-values people [(list (? + 1) 0 0)] ; n4 l' C) [! f" f; G3 G& ]

# s" y8 n/ j1 I) p" ~set trade-record-current []) _! H5 Q4 ^' Y5 B! p
set credibility-receive []' i, X7 n8 W* q& b
set local-reputation 0.5
" f- u9 K8 |3 T0 Vset neighbor-total 0. @! w& P4 t% c% m" R
set trade-times-total 0* r" f' \. T- u9 x. U7 b! b
set trade-money-total 0
4 ]: V& z+ E0 c& dset customer nobody
# }; q$ ^5 ]0 @$ k0 {+ Xset credibility-all n-values people [creat-credibility]
8 ?! b& h, m3 A" r$ x5 V5 a9 V) p: jset credibility n-values people [-1]
" g9 c* K8 P+ _9 Fget-color3 `% L* k& h; n- M6 X+ |! R  R

! H/ z' |3 n: `" vend
* [0 w6 n- k/ b- F  Y! X& P* [3 X
to-report creat-credibility
2 X( z; W7 t+ l; i" A0 [report n-values people [0.5]4 b; g$ V! `' |4 ~8 L6 T
end) w/ k9 C6 \6 r3 Q8 S& H
- u& _. G0 z4 {% A( x( [. V1 y, N9 g  p
to setup-plots
4 |" a8 i4 x) l. t7 V4 _, ~8 M3 y, U( _( F7 }: \
set xmax 30
; s. \3 J7 v; P4 A5 D. ]  J& O4 @

, Z7 Q/ E! \0 o. E; e5 ?" Gset ymax 1.0

6 M0 O6 m+ B, @& ?
4 O- b+ e' N" q: c+ d+ l2 ~& nclear-all-plots

6 G: n& |4 N7 H! X, J3 ]( Y3 N! r! @. C" T1 p! h' f
setup-plot1
8 q- o( ~0 a4 O( I
+ p- l! F2 q! y
setup-plot2
" z" r' W4 \8 J# I2 J

; R) {! f7 f, B$ l  Msetup-plot3

9 s1 P) h/ O: x0 A8 X' }end: T1 U  j; a/ s3 }+ r0 G

. J7 q: G6 p: W) g1 H. G;;run time procedures* i' e7 M5 ^2 N  `" ?

! F  [2 V- U/ J6 B! F9 ~' Dto go
6 z# D* o; I8 Z1 t* p
! W* W1 u0 j; o) T5 Eask turtles [do-business]
8 n$ ^" l6 N' n, t. O
end
0 K6 l+ Z5 q$ ]; t) f0 w  P, s! Y' i# p0 t! q- y
to do-business 0 _- s9 a8 E3 `0 b# ^- |7 i8 h, o/ R

9 @9 Q8 T9 j5 }1 z* d4 F6 T- I/ ]  t" s; H6 K6 p! Q4 p
rt random 360
* Y+ [2 t) o  W) n  Q* ^3 u& ~5 Z

* j% d& R, Y6 Efd 1
2 J7 u* }# @/ n% p
/ a1 n: U& x, r: \( x
ifelse(other turtles-here != nobody)[
3 v- u* y& g+ @+ V+ i3 n0 _
( [( W3 p! ?2 ^  H/ z
set customer one-of other turtles-here

+ W! N! d, u. }/ A# y: Y& Z# |  m$ P- [# K( U8 m* j: V
;; set [customer] of customer myself
% @) K1 p: H. |$ ?. v" Z; c
. h; ]+ A% M! K% {# O
set [trade-record-one] of self item (([who] of customer) - 1)! T4 I1 v  {( _
[trade-record-all]of self
" F8 M  z1 g) L3 y( R;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
; E- Y. L+ v" D! J
) x  v& P6 E* S# Q4 A) e
set [trade-record-one] of customer item (([who] of self) - 1)
9 M+ T, Q3 U& s* o[trade-record-all]of customer
. m9 c7 ~0 w6 e! Q1 ?
$ \! f1 N4 h0 p6 W0 F( E6 w, x
set [trade-record-one-len] of self length [trade-record-one] of self
6 P9 d. I% M. w  f1 T
' d! F! Y7 o' Q* F7 G) L
set trade-record-current( list (timer) (random money-upper-limit))
' P6 n" m' a5 n

; S4 i/ x! P  H8 d: Z9 r% y, j( q+ yask self [do-trust]( Y; ?- }+ n3 d8 d. H" w
;;
先求ij的信任度/ {/ h" S8 B6 A; k9 @' ^1 H6 o

* O7 ?, q  g7 [0 J  ]' Cif ([trust-ok] of self)
: ~* Q# X0 o" Z, s5 D;;
根据ij的信任度来决定是否与j进行交易[
* d, H, y2 U  f" Task customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
( `2 c& v5 ?& {/ C' [( S  G* q% b# C: E3 A& v6 Q
[
3 _* r( s0 c! g

8 a9 I' T8 K1 b' @; Ndo-trade
/ b& D5 I( \4 k/ Q/ u& n
% z, R  t! U, w
update-credibility-ijl

4 J5 p) _0 X5 x
# P% T! H$ N7 q; d* U' j& pupdate-credibility-list$ M2 ^- x' _1 R
) J0 X% Z" L0 _, v2 D

' K# b+ s! O0 |" b7 o% c( hupdate-global-reputation-list
: k% l7 b  g3 }# k( F, q+ Y

- e" o' \& A" J& W" Z+ Ipoll-class
% H, f1 r( O$ n% x' Z

  Q/ P. |$ z/ F' C: u  tget-color
; B, c, \% l& q# Q/ k3 q

3 Q4 O* o( ^  x( g; A. a# Q' W]]
+ }) S' f6 s. ^3 v& _; ]( r; M& r. l- C
;;
如果所得的信任度满足条件,则进行交易
: e7 e. e) i, P* L1 |
. B4 f, c5 ]% b$ ][
. v) p- J) L( S
' b: c' W1 l5 E9 M, N
rt random 360
# g) Y. b2 ~$ P+ L

" _/ B: Y! G- g" d; u4 Z9 zfd 1
: {! b: R  b( i6 \) X* D
# ~1 _" h* N  w5 f4 o# \$ _
]

# Z/ F# d. C' i) \
0 h+ h5 ]* U; r2 z& hend
. h$ @/ }9 I3 p( [. N  x
, a- d- q# U1 l9 b% v
to do-trust
; n# I* g3 v: x& q$ `/ u, Tset trust-ok False
# w* H4 d% G/ [! h4 i3 ?, D8 ~3 A) b0 g$ O# D1 r) f- ~, t/ F4 k
  x0 y. t+ k" t: Q$ N2 [/ d
let max-trade-times 0
' H6 `& M$ f! H, k; a3 @foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
, V* j$ |" n. }* ]5 z, S" m% mlet max-trade-money 0. F1 |# Y6 G6 ~$ R' _7 Q
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
/ s) ^- e6 e  Q- B4 Y; M, Hlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))  y4 T2 \+ n& ?* n8 @

: Z+ v$ ?4 K2 T1 A

2 |, H& [& `1 v6 P$ N# _get-global-proportion. C# p6 I6 U' N. V  R$ N0 B
let trust-value+ T7 m8 I* f/ E
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)

) R+ \" T: c: r% U6 j8 l/ Pif(trust-value > trade-trust-value)- h+ `# Q' C8 n, _3 ^
[set trust-ok true]
9 R9 Z! S# A' t/ g9 F) Vend
: X$ S% V: v$ j/ B9 o: Q" B' P. I# Q: y  K4 ]7 j$ X0 p
to get-global-proportion, L5 k3 j6 ?8 x, o4 C
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
6 W& f1 }9 n( Y0 k* n! F# B# H[set global-proportion 0]* N5 l0 I# n6 d. X8 {
[let i 0
9 v/ d8 t1 A0 P- [3 w$ d* glet sum-money 0
% Y6 l# R3 L! l5 p! g" V# w- o, ^/ Z& {while[ i < people]
* ?8 E9 }" V8 U5 g0 X$ {  f: u[! f: i5 }0 P& G2 w+ I$ N' u# S
if( length (item i
/ c8 b, a% D& c$ v/ A( p6 j[trade-record-all] of customer) > 3 )
1 ^' ?- x9 i5 }
[, ?: Z& P0 [4 f- b8 f& ~+ M4 h
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
! G( r9 E" l+ q3 v; j% K; W4 v) H9 {]
( j3 `3 W8 i/ L' ^]
6 S% v. L0 o6 W) rlet j 0
1 E/ f! ^5 k* u$ e/ g& ]& Dlet note 0
" q1 H: m2 h4 I2 O+ Z3 `while[ j < people]$ m4 k8 X( _4 j$ ~7 y7 ~
[
% S% a& E0 |) P2 j9 M9 fif( length (item i: R! J+ M7 \+ @, @( O
[trade-record-all] of customer) > 3 )
- x  O4 x" d& r- D3 T. K* V5 X+ c
[+ E' c2 q" s2 f% l1 i' G0 W! S
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)$ ?( A6 g6 b* _: a8 {
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
2 ?, K. _1 K- v[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]- @+ x0 \# x$ w; T3 }1 N8 y+ ?
]
% P/ i/ V  `2 x6 E]9 _  V+ ~( i' b3 i; A& @1 O
set global-proportion note! B: c. y0 v, z2 O
]
5 G/ w- f8 X  j2 \6 u2 J' _end* j: G9 @/ C. R! [& Y) ?. }
/ S% `! X2 ~2 x
to do-trade
$ _! j! x2 i# h, _;;
这个过程实际上是给双方作出评价的过程0 c3 w. T' A; G+ _' r" J' [
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价; ?" H5 L5 j. z6 C( F% J) U
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价, Z9 f- V' u2 `* L5 Y8 q! I
set trade-record-current lput(timer) trade-record-current
6 x# T3 ~. T, Q  _3 D5 L;;
评价时间
9 D# J9 H5 e' ~6 }7 z3 A; _ask myself [
" ~) [# p& f, }: o  M0 k  Tupdate-local-reputation
# _/ r* Y4 s4 e/ S' n5 Jset trade-record-current lput([local-reputation] of myself) trade-record-current. }/ ]9 ^# O; F4 X) E
]4 {) n/ Y& ~( q& C* d, b1 {0 h( b
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
: }1 p+ e3 {/ h0 a;;
将此次交易的记录加入到trade-record-one
+ a* d! u, F! d. n% z: i5 uset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
# D/ \7 _4 r3 R% {& F4 _* ?; |/ ]let note (item 2 trade-record-current )0 f, g! p) j  g) S5 L; {
set trade-record-current
5 b: f( ^: D" X9 U) N! A" s(replace-item 2 trade-record-current (item 3 trade-record-current))

5 M: b8 [5 ]8 S2 [! Wset trade-record-current
* u5 t% F3 O1 n/ v  w/ o- ~(replace-item 3 trade-record-current note)8 Q2 @0 Y5 I1 ?* k1 `) a
6 @) T7 Y: y- T& o+ x8 f

* x! s' `1 Q3 q8 kask customer [' v2 F4 ?3 P. `  n( T! B0 R
update-local-reputation! {) _* ^! p4 O7 R4 ?+ v- C; o* w
set trade-record-current0 t& v, {5 I5 q2 f
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

( p+ I) }# ]+ [) G3 v4 b]
+ w* o) u1 L, `- O+ y3 k5 S; Y, v6 ?, K; n% u( I' d5 t
  W  o! p: `3 h, M, K
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- V+ W: g! k% W2 Q( R
4 B+ J7 |$ U6 e$ C# I% k) e- W
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)): O! p+ R( G& d$ m) r/ [
;;
将此次交易的记录加入到customertrade-record-all
. ?9 r' F* G0 X( p, lend
) q6 ~9 q5 ], B/ Y1 D- T; p& z  q8 @* i/ B
to update-local-reputation
% |+ \; b5 w( _7 Tset [trade-record-one-len] of myself length [trade-record-one] of myself
" h! h5 U( ]: D0 M& S6 N' `
- p0 @( X8 l7 B+ W1 g% i( V3 s# ~# j) A& U* M4 n
;;if [trade-record-one-len] of myself > 3

0 B/ h; {+ _6 Bupdate-neighbor-total% H6 l4 S; r) K( K1 v
;;
更新邻居节点的数目,在此进行7 P4 K2 T" \/ |4 v
let i 3
( `2 e9 N* [' o+ a; U, Xlet sum-time 0
& Q2 e! n6 b$ B$ T! t% Cwhile[i < [trade-record-one-len] of myself]8 N/ N: |" ^; C' Y+ A" u
[- A; F; `& M7 j3 O) b
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
4 P, p* t$ |9 P9 Tset i6 G# S4 N5 @3 x3 T4 v9 N+ t
( i + 1)

' X1 G; Q. [& g% ]]
7 U2 q+ B+ d, q5 H; B) ?& q/ }let j 3- n0 r/ T. l7 F( {( u
let sum-money 0) T) _4 t) t6 ?) v! Q2 k, L
while[j < [trade-record-one-len] of myself]4 H% {0 t+ c5 J. M
[- M/ C0 v' l: l
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 d% J6 F  m* I4 k& C( w& Q6 D$ lset j
2 v6 z$ T& p9 _( F3 T( j + 1)
) f: T7 @6 i- Y7 C3 N9 E1 v- h0 h, c
]
; a/ \- D+ I( S" Nlet k 3
9 T1 V, C' D( m. alet power 0
/ W7 c% V! {7 P" s7 alet local 0/ Q; N- g. A' b5 S1 c6 w; |8 u# o
while [k <[trade-record-one-len] of myself]# R+ v7 G( ~7 I% U$ S# {7 q5 N, K
[+ ]2 T; Y( Q- d, [% f6 \/ d
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) ! [8 @3 @. l" K. [8 j
set k (k + 1)
8 @* z- v  J2 n6 q) K5 I8 V7 e]" j" P; e& L* T1 @1 B2 \+ U
set [local-reputation] of myself (local)5 ]. l; w3 A) a5 s) \' y
end
9 T) D* c5 |9 g4 ~8 W  p# X! C7 C3 j+ A; b- o7 P
to update-neighbor-total$ P* B8 z5 m  ?& |; ~
; M* ]9 s8 t% O  z, U, g8 }
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]/ s/ v0 B& f. B  y$ S
8 t0 k" ~7 ?6 M

# b, m" x# J( p3 }! w6 _7 i" uend3 ^+ b" L$ t9 G  f; c+ q

( N' F5 \6 N8 N- L: C% cto update-credibility-ijl 3 a6 ^! @% r( ?6 v6 p4 Q

7 I$ ^2 S. l2 I0 R! J: r, v;;
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 p1 j" l2 p7 w2 G6 g
let l 0/ F2 V: X$ h  F: U, A( \" w
while[ l < people ]
$ O6 y3 \( e8 t% m. M  Y* @! L;;
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
9 K2 n8 R# B7 y' t7 }& I% K[
9 ~* o- n/ Y: tlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
0 b( b1 m1 V3 _; p& Z! g  n. pif (trade-record-one-j-l-len > 3)$ p2 l: T2 V, R& s7 ]( y1 s
[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; d, S( Q: O2 v
let i 3
3 T+ ?! `, D2 M- xlet sum-time 0
( O- A6 o' `/ j% ]while[i < trade-record-one-len]
) H( |# s) j: K" P( {4 [[
# Y% A9 C" F. [  R7 C1 |  `$ eset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
/ z3 G. J/ K( q. }: E1 \set i
+ z, c" N  r& M0 A" N) p( i + 1)
1 t' ~4 d! M( o6 }1 w9 }3 E
]
; I2 H, U6 J7 U" X( z) olet credibility-i-j-l 03 C# N7 ^% n; L
;;i
评价(jjl的评价)% {7 \! l, F. i) e
let j 35 I4 E$ P5 i9 ?# g5 X7 E& W6 R
let k 4- p" F. V  d6 c/ V# d
while[j < trade-record-one-len]/ R3 e( o; m2 B, @  h: a, l
[
3 v4 w4 H; e& ?( |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
" W* c. F! n; w# w) dset 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)* j) a' o$ {/ V4 U% n
set j) J; y0 C" `- N2 p, c
( j + 1)
% ^* s. M4 d9 J& {: W
]
, Y( A* e; I7 s$ Mset [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 ))* _# Z6 A6 `# ]2 e$ q' H1 d

7 g) _$ m5 v/ ^% ^8 }! L
" i' `, Q. ~/ M1 u) A& V* g' S$ }
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)): e/ j( D6 \# `' _# K
;;
及时更新il的评价质量的评价% S) |& Q- I0 U8 F
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
4 K- R1 M. Q5 r  Y- y0 Mset l (l + 1)
7 {& X  W# i: d]% p# Z9 u$ X) T! `% ^# B
end
0 k8 q* o# d5 Z; ?  ?& U' ?7 m1 t! X" u/ _* I0 e
to update-credibility-list
0 \4 v4 p- m: M+ Clet i 0, y7 C* v* X* B( a
while[i < people]: }& K7 [& n2 C7 ?
[
0 X" ^4 m" [/ h4 F/ E6 o3 plet j 0
, x6 t* H5 |. O  p! d5 w8 ]let note 0' s) E- L9 W' T) c& I, c, J
let k 0
( l7 y) I5 g& [" O& T' H. c;;
计作出过评价的邻居节点的数目$ V: W8 j4 Z: k2 t( W" [
while[j < people]
" U" l/ z/ }0 C" F0 w2 z% \$ i- @[
* w* N% t8 {+ @5 mif (item j( [credibility] of turtle (i + 1)) != -1)
  U/ ~& y; f/ e. b$ i4 E( P% a;;
判断是否给本turtle的评价质量做出过评价的节点( P: w. S! \* `
[set note (note + item j ([credibility]of turtle (i + 1)))9 O5 ]; P6 }/ D9 `, C
;;*(exp (-(people - 2)))/(people - 2))]

; g9 _8 `' i5 J5 U5 L# L" |$ dset k (k + 1)
- |# L- U# g, b  E. q]) W& N; j" |+ t/ ~- L
set j (j + 1): m, j2 Y+ U8 K9 n1 r8 k* ^
]% D3 O& U% r$ A! o/ K7 Z9 ^
set note (note *(exp (- (1 / k)))/ k)
7 ?  z+ w4 e' }+ e+ {. f' _) O. ^set credibility-list (replace-item i credibility-list note)9 e' H+ _1 y; O# k* Q1 d
set i (i + 1)1 {/ X5 K0 \' f$ T0 m% {2 x
]$ T) d  K) l, B+ h) q( c% H( @
end/ t& d, w1 W$ d- ?* H, e

# a/ A0 `& W# [- O1 d8 qto update-global-reputation-list
( f0 Y8 h6 K. C8 X2 L6 @let j 0: g; {' L- \1 R6 t6 k% t* a: t
while[j < people]
0 k$ \4 i6 |2 ^& {, z[
2 i4 q: [  X, f" q4 y; @let new 0! ^5 z. u% d/ K- g3 o, p  d
;;
暂存新的一个全局声誉, `& O! C. G  R; v& ?
let i 0
8 Z2 L) X' I; T. dlet sum-money 0( h. J$ k$ ]6 U) z. z7 f, |
let credibility-money 05 L7 ^  b( s# V# f
while [i < people]8 F( t+ {; `* o" M
[2 m$ \. X- S3 }4 d' `( ?
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))" a( y& L) W7 Q" F
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
8 w2 o" P; y# V) eset i (i + 1)$ `8 {( A3 C, a* _7 b
]
- ^5 o- |' ^; Nlet k 0
! X( V( T. q5 h) n7 C6 E0 V& qlet new1 0: o! J0 C: F0 i( h$ @  T# V+ U
while [k < people]
2 r( T( Q9 }, w! L[
; \5 h8 g8 L) W- T, Jset 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)& e' V. u7 J$ Z3 E; Y5 S, Z; g7 Z
set k (k + 1)
3 U' T( _! R. K' v]
- _$ M9 {+ g/ x) v! sset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 4 W$ K% c+ I. P# k
set global-reputation-list (replace-item j global-reputation-list new)8 v& r4 y3 G' {& ^, p7 b3 q
set j (j + 1)
- U5 ~6 g  O0 r) u7 u]
+ S6 e* d& z6 r/ T0 L6 }end
' h1 A; V+ o1 k. e4 L+ G
/ y* L% O; m% k, H' a% ^  N& v5 y8 _& }# h9 {% Y
$ i' d8 u/ X& o7 f! ~- e5 }0 W
to get-color
: I# X  U: [+ H$ U4 T# u
8 L; O, ?  t: h8 m7 Zset color blue

: S9 m8 [9 j$ ^1 R* {2 T' q+ ]" Z# E: ^end
4 A8 {' U" t, d3 T0 `4 f: t1 h2 V) ]* n3 x
to poll-class9 J# h) H7 g/ P2 W; X) T
end4 l0 z7 u& e2 x. ~6 O! `8 ?

% s: _, ?7 ~& t$ g  ?to setup-plot1
5 W3 m. E& b5 F$ K
- ?) _, e7 M  F9 ^set-current-plot "Trends-of-Local-reputation"

. K+ M2 d4 N# o7 q7 p2 k1 f! L0 b
set-plot-x-range 0 xmax
  R7 G/ B$ R) ~* y. X8 W
0 D& T5 G1 ]0 _' B5 ^5 w# O. q$ o3 \
set-plot-y-range 0.0 ymax
7 V' E# C' }5 e$ D9 a+ X: S
end
$ G2 w1 p- b% w$ @# G- L* \* r% G4 A
+ f6 Q* k* ?6 B# _  fto setup-plot2
; P! w8 i% r  ~/ }, C
1 q* A5 ?2 _4 v" l" Y( xset-current-plot "Trends-of-global-reputation"

7 z$ O5 O& o3 k7 w  [6 u. W% z# B$ z- X
set-plot-x-range 0 xmax
7 J5 b, C# e% m
" @* ?" V; B; ^
set-plot-y-range 0.0 ymax

4 _4 F% k# u1 [- A! zend
7 _. E3 l. y, y7 E; @3 n
3 ~8 v1 h( F5 K9 ^; d" Qto setup-plot3( |% V. @/ Z4 N4 t2 ~% m
/ b1 B) z, d4 {
set-current-plot "Trends-of-credibility"

1 w3 ^3 Y- _) q6 f# J
/ @3 Q  ]' N  g1 j0 Dset-plot-x-range 0 xmax
! x/ m- i  [$ k0 j! z! R& }, K. \
3 _% T+ D/ [' x; [
set-plot-y-range 0.0 ymax
6 ~! N+ h* o$ o% Z: t4 e
end
; L6 V; H" _0 Q( j8 f  ?2 V
: V: `6 d6 h+ n; a' Oto do-plots
! w- L  Z$ Q- K! a8 C7 P4 M. d) fset-current-plot "Trends-of-Local-reputation"
  ]- l4 }" H' ?  F9 \! Q% N3 iset-current-plot-pen "Honest service"
# v4 n! e. f/ C; e, p# @1 @end
, x5 J9 S* Q4 ^7 o
+ S9 l0 f. d- a2 j[ 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.6 ?8 Z1 {1 e2 q

( B# r4 D$ o! E( T2 A" O  |( y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, 2026-5-28 22:17 , Processed in 0.021598 second(s), 17 queries .

Powered by Discuz! X3.4 Licensed

© 2001-2017 Comsenz Inc.

快速回复 返回顶部 返回列表