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: 17889|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:
3 H# w8 j( @* eto do-business
2 B% Y1 \  ^" g5 B8 G2 X- i rt random 360( C+ {9 N' ]+ K( W8 n) S
fd 12 y! |/ r- ?* h+ B$ p3 p: M6 D+ Q
ifelse(other turtles-here != nobody)[" d! w/ [( [+ p4 V; u
   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.) u0 [* s8 Q: ~' X% o
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    " X% ?5 e3 |! L7 \
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
& b+ _  l' D( r   set [trade-record-one-len] of self length [trade-record-one] of self
- s! Z9 D/ }& z4 P   set trade-record-current( list (timer) (random money-upper-limit))- u- I; a/ q; F) K/ K# f# q

2 x2 i( x- _( p' T2 Y问题的提示如下:" `0 V) R3 D/ r+ U
$ Q% t# m% j* f" k
error while turtle 50 running OF in procedure DO-BUSINESS" r1 R' T9 J) m
  called by procedure GO5 S: i( I1 r; i  {' P& T+ x
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
) V. ]3 I$ j' v, \7 j4 j) N7 q
(halted running of go)
4 r! j3 @# d; i- T' v4 o& p
3 i6 u! v/ `) G$ i2 Y' F# d3 e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~~0 N) Q2 G7 _+ N
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, C5 B1 \0 V" Y# A  G! ]' X/ D
globals[8 T5 H' o, F1 x1 Y, [) _2 J' r) W
xmax& n9 Y: m, Y( m  a) C
ymax
9 L: A4 i6 G  F  L" K8 oglobal-reputation-list
9 Z/ p1 U) E/ ?5 y& F
1 w  Z# r6 E8 J9 H;;
每一个turtle的全局声誉都存在此LIST
% F% `- v) n% pcredibility-list
3 W& B: g6 U4 T4 n4 y0 f+ Q;;
每一个turtle的评价可信度
4 s2 {6 b2 R6 ~$ b# ]honest-service: C" b7 u( m7 m* S3 ~
unhonest-service
" h" Y# l2 t( _7 Z$ ?9 B" Poscillation
! \2 G* `0 L  K  {) grand-dynamic
6 B/ N1 u, c" ?5 [/ }]
5 T1 s9 u+ I. I
; G( f( A0 C3 P: j7 yturtles-own[  f: Z9 B+ ~2 t% N% f
trade-record-all8 ~7 g% O4 S9 k; m7 D& s; d  r* B' X
;;a list of lists,
trade-record-one组成6 t( ^& n* u, T( q" M
trade-record-one
  g8 g+ r$ E- l4 Q# 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
' O# E0 T: F% ]& X& b
) z  J" M; t- V( o% ?;;[
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]]
! |& E$ n1 M  C5 Ytrade-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]
* P. z3 b5 w! t! zcredibility-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
. s5 F0 }% S, F" O, D; L( Qneighbor-total
3 ?0 h7 T1 @( a, ]* G" ];;
记录该turtle的邻居节点的数目
2 F' R  H! u" A* m/ T; ktrade-time
& b8 \( ~- q$ Y  O+ V& _;;
当前发生交易的turtle的交易时间, {. _3 |2 I$ [9 H; u- f; Q; _
appraise-give6 L) J9 f- L. `# r& m
;;
当前发生交易时给出的评价! A+ |/ q. u% |  a( J4 P
appraise-receive( x% h* ]# i& `
;;
当前发生交易时收到的评价- k, l6 h* [" A$ @4 C0 W/ X8 m7 u
appraise-time
5 I0 ]* u1 A# v) X0 ?;;
当前发生交易时的评价时间
0 G5 L/ O, u& N, {0 s+ l6 A0 k( B# J8 Tlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
% Y5 y( H8 j4 u; X: M# L7 Ltrade-times-total
/ j* {* {7 T# q+ u, `;;
与当前turtle的交易总次数: S4 t$ z$ T7 f, {) ]
trade-money-total
* v1 N, ~* {9 Q& ^# d" w;;
与当前turtle的交易总金额) q( M- {9 D9 u. [6 A) X/ Z8 `
local-reputation- P  @& M. O# r0 i
global-reputation% ^$ X$ j1 d0 i  a8 |2 r* }6 U
credibility7 w8 F* c: }2 e$ y2 g* ~; i
;;
评价可信度,每次交易后都需要更新" H$ P! [6 {4 A/ G
credibility-all' r% ]( g- y5 N$ t: B2 l/ {2 z4 {0 _  V
;;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- E2 K( V; \3 C, j" Z) V' t

" H. o2 Z; s4 H8 I3 ]7 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
; A7 x; _7 \' g$ \* w' Rcredibility-one) {/ ^& b* a8 W2 K
;;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
' v; X5 \) }- Q9 \global-proportion
- O9 j2 M# q( t* u0 Mcustomer8 A  w9 w. l: c/ r9 C
customer-no; R1 _: W5 p( t" @# q0 w: x
trust-ok
- Q/ P, z4 |3 A4 T# G. o! strade-record-one-len;;trade-record-one的长度
5 c6 X2 ]1 ~* ]]
$ B- d* x& K9 ?6 }6 F" k  s; [
;;setup procedure3 ?9 v% }3 q3 e' n" v
7 _" F4 O2 M' D
to setup% I8 J* s! p1 I1 o

3 e& C* |; A6 Z8 sca

5 j7 X3 D9 f7 e8 h+ B: c7 F; _- c! D' F. u
initialize-settings

6 T: o# o" N" I7 i  C7 V. ]( s9 O$ S( d+ {: A! i0 f) X
crt people [setup-turtles]
+ U9 F7 `0 n/ Q: J# R) [
9 w2 w, L" a2 L* P4 b' a7 e
reset-timer
+ J2 ~4 X$ o# p1 N! q5 o5 }
9 h$ h# l  N# m* _1 J  N6 h
poll-class

1 d, T! y) ]" u$ J% `+ k0 \# e
- c2 E! N6 Y( t- k- S2 Tsetup-plots

4 T0 b5 p' B- J; }  @
9 H# j/ p% y1 Z5 ]3 ^, ~" ~do-plots

' w/ D7 P: n. H- [$ q( \6 c9 Hend
, `4 N* G9 a. a3 u$ b1 z
" c; d% q' L: Rto initialize-settings2 A! O: l2 v+ }9 k2 Q

4 Z# b* U: ?+ l( t" ]/ tset global-reputation-list []
8 I/ W2 g& m& o. M; Y2 \4 V8 Y( t
7 _3 Q# x; d# p0 M+ R2 X
set credibility-list n-values people [0.5]
, p2 X+ ?# f& l; Z1 A" I9 F
* `% p1 x( _% _5 [
set honest-service 0

* X! Q0 I2 }! }; [0 S
& D7 ^3 Z8 A/ zset unhonest-service 0
1 [* ~: j+ J% c2 d* M' G( [) a
' F( O( a; Z* A& [2 x6 z
set oscillation 0
, F& h# j- u' x, E( W  j
# C+ f+ d& j( M
set rand-dynamic 0

. b# e/ @/ K3 ]+ Nend
) W) Q- }3 z9 i- T1 S. v8 l; O' ~9 Y/ z/ X5 v) H' J
to setup-turtles + U' W; s' E/ S( [# G! z
set shape "person"
& k5 h7 H0 z! Q% m! I9 usetxy random-xcor random-ycor, @4 p7 |  H- s& ^
set trade-record-one []
) u9 A! _' f+ p: G  \/ q! ~: z, }/ A
) W6 |& i6 P& }3 d
set trade-record-all n-values people [(list (? + 1) 0 0)]
; ?2 D6 J0 d; a

* p+ f- _! b+ F1 }set trade-record-current []
1 T/ ?- p& z- [) c0 d/ l3 i* dset credibility-receive []! J+ F* f' {: a! U7 Y
set local-reputation 0.5
- ^# b* c. V4 C& r1 sset neighbor-total 08 @  z' \' ~' E" B( M" w+ N
set trade-times-total 0, j( X! B. [( A- h- m
set trade-money-total 0& l$ q0 ~4 L' t1 L
set customer nobody
1 ]) R& u5 x0 [set credibility-all n-values people [creat-credibility]/ v( E3 v; M& @; P& `; m9 _3 ^! ^
set credibility n-values people [-1]+ J7 `# [  F3 j
get-color9 k# W/ e5 B8 L& j5 J2 N
. u0 o! c8 m' f  `6 C
end
  k; P- ~1 h8 ]# d2 R7 i* D* L9 `; \$ U( z
to-report creat-credibility0 k: M9 {! Y+ d
report n-values people [0.5]- A: D; v- h! R' h- q
end
/ z7 ]8 v6 W9 r6 P$ E; D+ V7 A" R, ?" A( Y: m+ V# Y
to setup-plots" d( z: W5 ]+ `+ W1 Z" I

3 H3 f$ @0 Z* X, Xset xmax 30

$ W- |+ Y& x, I2 h( E. l/ |! j1 }2 h
# \$ G- [3 I3 gset ymax 1.0
$ H3 X$ S6 w1 ^$ w/ T, C% j

* s/ w2 s3 ^! B: t5 `, xclear-all-plots

7 H$ f5 O! o0 T. z2 s! I% K! z& ?
setup-plot1
9 Y' A5 y+ G! d
2 L% I# v7 R! U2 ~
setup-plot2

: u& ]  ^7 U7 M0 y3 y# B' {
) R$ C$ T+ m( z8 w: h& Dsetup-plot3
  t  i3 g4 b$ ~
end/ i1 c# Z8 H$ n0 t' C3 Y$ h* i

+ v  r6 K& c8 L. m. e6 R3 J( G# c# A& C;;run time procedures
' n& H3 [8 j1 Y/ w' E+ s' r. ^# _: O* L" H2 n+ X/ h
to go0 a& i0 ?; Y. i7 e/ K

2 X8 J* f- B: C5 zask turtles [do-business]

# ]3 `* l0 Y8 j% N: J# u+ K! qend+ \! G. I* {3 p4 n3 y

. U0 j$ X* J4 h7 Q& K! Rto do-business , a  K% d! x4 Z" W4 p" @
) i, G8 ?$ ]2 o6 d
1 W' L% J5 n% G# R5 L; a8 x% |& G
rt random 360
; {8 ^# f) y: m% X0 h' W
+ q8 F$ N& ^+ M0 v& L
fd 1
8 ^( R* ]8 h$ n5 e: v* n! o3 Q

: A: H$ F* Q* ]ifelse(other turtles-here != nobody)[

& T# `' N5 K7 A- R( }# d
- F/ f8 z& E$ @! o  ~% e$ l/ vset customer one-of other turtles-here

7 G, H8 `2 u/ r" M8 X( R! E+ R9 s' N- V+ f* V2 G( x& N4 _0 i* ~
;; set [customer] of customer myself
1 X6 _9 t2 x& s: u& U
  p& H7 Y) H: ^8 Y
set [trade-record-one] of self item (([who] of customer) - 1)4 \0 b3 ~) y3 g  F/ O- @8 I
[trade-record-all]of self
7 K: r( a8 U6 P7 d) `;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

  o4 _& V6 ?2 x7 ~- o+ ?2 M2 y! A! {( H- n0 K/ i
set [trade-record-one] of customer item (([who] of self) - 1); G- O9 a7 K+ \
[trade-record-all]of customer
5 [+ t  G# ^: x4 ]2 J4 N
' e6 W2 P% J- c) H9 ^) M5 f
set [trade-record-one-len] of self length [trade-record-one] of self

( J3 ]8 Q0 t. H% y' b+ j8 w# n
6 C  c1 C4 D% @set trade-record-current( list (timer) (random money-upper-limit))
3 x5 r0 o) n, l/ c7 H

; `$ p3 x: X/ D8 O0 S* nask self [do-trust]
4 `2 r3 d  d. b1 Z5 _3 ^;;
先求ij的信任度; `4 o% ^* U2 w# c3 _8 d: `
/ w1 g0 @, m5 H9 q& W- J
if ([trust-ok] of self)
& y! U6 a. O1 [: m0 e. `) o;;
根据ij的信任度来决定是否与j进行交易[
( D2 P9 Y( C. task customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
# U' H, J9 D# y, l; ?% c2 _8 G3 W/ o# U# `) Q
[

9 H1 m9 k8 t- E7 `1 [. I# s' C  r: I9 q" o0 \
do-trade

4 B( X; i3 l0 |0 y# w- z% t" d" O% y
update-credibility-ijl

% W; L8 C6 g9 b1 y. t$ a6 F
+ y4 W; u7 B! m3 oupdate-credibility-list
0 X$ S+ x# ]" v" q

4 I5 K; ~* S7 m3 `0 W: w( k' n+ c' H0 y. E: d2 W; c) o+ T
update-global-reputation-list

$ E) _5 A5 Y6 V) e& i& s
  Q) r+ i9 Q+ q% |poll-class

" W; [2 S& ]' D9 _+ Y# m1 U5 Q
. N/ j; x5 S+ l( c8 pget-color
. l4 [7 u* I' |

- f7 b* S% S% F3 J) l- I/ I4 e# f]]
/ V9 E; y# |; `
5 h5 H' A: ]! H;;
如果所得的信任度满足条件,则进行交易3 M- t+ g- Y: k' w. p
# V9 p0 a. {8 S9 N
[

, s: m" O: L! c1 {* c6 k% P) r
. Z& U5 x/ t" v  g; p" M5 o* e  drt random 360
- I! z# ]9 U4 h
1 ?+ Q; g) V0 o0 o& ?* X
fd 1

3 n5 X( i' x' k6 G6 C- n2 L' m$ j& a% z  Z  O% |/ }& S
]

. e1 d# w. B3 l% B% Y" |9 O  u' k
end
. F3 v( X# X& }
4 h, o( `$ e. c! f
to do-trust ! D# w6 z8 g' g/ W1 m
set trust-ok False
2 _2 T3 |( v8 D' \- K! {
: q% ~! w- Q% ^' {/ k+ ]

' p4 Z7 T1 B4 b  w. S; Nlet max-trade-times 0! h; g) t! D5 p1 k
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]/ D, d* X& P6 ^( r
let max-trade-money 0
3 Z2 {9 P5 {& J' A( [) n* n% F/ nforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
2 t$ V5 k: H$ b$ ilet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
( `  C! V( t3 ?% j2 \- S
" A6 }+ U7 v* t- i2 e8 l$ ^

! _& W3 r$ Y7 ~  R0 W( Sget-global-proportion
5 X2 r: n8 Q+ s: z! Y3 B  c; {( `let trust-value+ f5 y% t+ Q5 a6 x' n) 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)
0 a: n6 ~* i- n  k0 r2 e1 C+ T  w
if(trust-value > trade-trust-value)
. P3 }/ z+ ]2 T* D5 R" b[set trust-ok true]+ I, ^6 v9 k$ \" r4 Y5 h
end9 G3 `6 M. w; [( |9 R; Y" z
7 r5 @$ M' a  k% N9 K: F
to get-global-proportion
* |" Z) G; X- h5 {ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
* l( h4 @, v0 M) ^3 I[set global-proportion 0], |  c; E4 ~1 p, J# T5 ]
[let i 0+ n) S. P( `8 D* p+ O# ]
let sum-money 0
/ @+ P9 `% A- dwhile[ i < people]4 }# o; C. _7 |. x" ?; O% i0 Q
[
# W8 `7 H! K9 G; S/ wif( length (item i
2 _5 L  Q$ ~7 {6 Z9 f[trade-record-all] of customer) > 3 )
2 N- P, q8 I8 x3 W$ ]) Q: m
[
% r8 s% w& ]6 Z/ t) @9 }set sum-money (sum-money + item 2(item i [trade-record-all] of myself))" A) r: v' P1 Y) h& l
]) J) B1 F# y+ E4 z! S& i
]
  \) \' n1 ^! b  }/ F) Rlet j 0
) S$ u8 I" d: o/ W# _let note 0
, ?- F7 p# E' Q% f/ G: dwhile[ j < people]
, m- i6 \$ f9 g  `% k8 \[( O3 @% {0 W6 C0 b
if( length (item i6 l% F8 a5 D3 J7 q
[trade-record-all] of customer) > 3 )

) A- n0 O! y5 R[) w) Y" x8 m- I. ?
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
+ U( j, r- p1 @1 R0 K. b  Z, g' X[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
! V* S4 S/ O; l[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
: n2 E0 G& u. O5 u8 D" V]
5 V; v' M. B8 q# w) O) q2 K]
  Z# T: M6 i  c$ i, fset global-proportion note' E1 P7 a- y. W
]3 P, k, J8 G0 R- s) r* i
end+ f1 N5 c$ F: Y% p

' J+ i+ w( T& ]# ]to do-trade1 K! y% E: C: h4 I
;;
这个过程实际上是给双方作出评价的过程$ r) d6 t% c  I! ]8 f1 I( k; u
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
7 Q2 Y% M* ?& X6 gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
! `- N( `% O3 Z, v2 n! e  c  ]+ Zset trade-record-current lput(timer) trade-record-current8 [" [2 j4 F; K4 k9 W% @4 I
;;
评价时间
, E4 W& P1 F7 W. Aask myself [3 l2 G/ ?! r1 t5 |# Y
update-local-reputation
3 P$ W. B* m2 N! ], Sset trade-record-current lput([local-reputation] of myself) trade-record-current8 e" t  v3 K, [5 ~. l3 w/ ?; k
]( J, \  |3 Q& g3 K
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself1 v! Y* d5 C$ v& m9 o# A
;;
将此次交易的记录加入到trade-record-one
2 V9 {. V) _! Zset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself); V# W( O+ E  t$ |/ w
let note (item 2 trade-record-current )
( G  q& [+ B) U! Fset trade-record-current
' A4 O4 D2 n6 j3 V(replace-item 2 trade-record-current (item 3 trade-record-current))
$ Z/ _! S1 G5 }/ J1 m2 F
set trade-record-current
1 z! z1 n- \. n1 K' B  {1 B(replace-item 3 trade-record-current note)0 @1 q# r( Z( F3 |0 |
3 v- g2 g+ [  z7 F. I5 b
' ~; F7 a) G; m0 w2 M& O
ask customer [
. T. ^" G4 p: w  C; P  r( i$ J) supdate-local-reputation( g3 \# }7 s) X, S
set trade-record-current! `$ \! y0 Z" ^' ^: V& ~! y
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
0 Q0 ^3 S% b* O7 {8 u4 p0 R" g, e# A
]0 o; ?2 x+ R( s/ }2 q8 _
4 k0 z$ I4 P5 h
0 _- }" k& |5 n5 x- }
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer3 M9 J) D! R. [5 l  T
; t. G% g" G& d+ X
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
7 g# Q. O* @, ^( l1 Y  V;;
将此次交易的记录加入到customertrade-record-all7 E% G+ ~# A9 _6 O' i: F5 o
end# D( S1 c2 p: @
- _2 o3 e- S8 ]- p9 ]4 _
to update-local-reputation
( O: Z% ?9 e, ?1 l( o; vset [trade-record-one-len] of myself length [trade-record-one] of myself
; ~; D+ ~( `  \1 o# i% W/ |" o
# k' e+ J( G" ?. B* v' l+ M. B
5 D# {0 w1 A3 b5 H;;if [trade-record-one-len] of myself > 3
3 B! [: d7 k* s* J# m
update-neighbor-total" y& b! [; J+ {# ?
;;
更新邻居节点的数目,在此进行
1 t3 e* z0 `% ]: X) E4 Tlet i 3
& a, m2 H+ F3 |; A# ]" llet sum-time 0
$ y7 X. L- {& H5 E9 P& [while[i < [trade-record-one-len] of myself]$ |6 L4 K4 M6 ~) a! A+ f& ]
[
( v: n# |5 L# k8 R% y+ T/ i7 ~, |set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )8 h" d1 |3 R8 N2 U1 x4 Q: q0 L
set i
: L  s- y: n" f- F- r6 V- b2 b( i + 1)
) N8 C7 O( @5 {  D5 g% i! i; ]
], {: H- m5 G3 W# `7 Z) H
let j 3
! R6 ^) m4 L  Elet sum-money 0) u: J0 D* l( r; ?2 Y2 h
while[j < [trade-record-one-len] of myself]# Q0 B6 d) D; e2 W( k, X1 s" {
[. H; Y# s0 P- s& U8 H1 t4 U0 r
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)
! O& T6 L# z( a4 w* dset j
, ]! F, r5 M+ m( j + 1)

+ a+ s" p6 m$ N/ v) u]$ l& S, r/ ?& P/ [8 H
let k 3; p/ C. c/ S# O- T
let power 0' U6 F$ e. y* b0 m4 T
let local 0
9 q5 ]; b" T3 d( _3 _* bwhile [k <[trade-record-one-len] of myself]
# w  g8 ?0 I- S3 G# H[- R6 \) c- _& k1 D! L
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)
) `3 s1 ~- o2 G3 v9 A& eset k (k + 1)! {# i% R1 m* r7 m' X: T
]7 Q! R8 }' a. m; P
set [local-reputation] of myself (local)6 I" g8 G% a% y. A# _
end6 o2 `9 {5 M# w
+ V2 r8 I) I2 t* R- Q1 Y2 p. J
to update-neighbor-total
+ Q0 u; n, J  G9 i0 z; l& Y
3 V. I2 r% i( Wif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
. v. C; Z4 ]" j5 g2 w! x- a+ a  R; Y& O" u2 `
/ o. t3 F; T% \: j3 O
end  t/ A2 f+ `+ x1 c/ @0 j
' S( N$ \+ w  {; J
to update-credibility-ijl
0 p5 ~( r# Q7 p1 v
1 x: h; b' D9 ^  c;;
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。5 W! S3 @& e8 n, W- j& n
let l 09 _$ v( x" W" G" ~1 j1 z7 X$ j
while[ l < people ]
& Y: M1 _! s, F, }$ B, T;;
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
* j; A' j0 g* L2 n[
) Q3 u/ t. K, E# c, [let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
& Z6 b& g  i  ]: ?6 u: z( i- Bif (trade-record-one-j-l-len > 3)( ?2 s& @$ l# I: H
[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-one2 i7 H. G" G0 I
let i 30 H' p1 G5 T  l" J$ B$ H) w( u
let sum-time 0* ^; y1 ^4 U! q
while[i < trade-record-one-len]) ?) i- O- @8 l; g
[# M- j) l2 K$ d
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )- R. k! H, h3 ~/ x" y
set i
& J; e  P8 H5 n4 T. J6 k0 @+ O' Q1 q2 n" c( i + 1)

4 B1 {6 f1 x% {' S/ N& ~, M1 b; c; H% r]9 S' _1 I) b  X$ }
let credibility-i-j-l 09 B. c) ~. A1 H* i) z
;;i
评价(jjl的评价)
% ]! u% H+ A4 F) _1 Olet j 3
) v5 N3 \' t" B* v. M  J; Olet k 4
1 T& F4 N  M. j2 Y5 g, Owhile[j < trade-record-one-len]
' v6 O' I- U7 i) c1 c! r& w. ~[4 i! ^# k% ~/ F; 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" ]' y6 J5 H1 ?- K. r5 A
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)
% g1 E# g% J* Q- }! }set j6 W# L' l, A: c* ?
( j + 1)
# A/ }) C2 @& A$ u
]
& u1 b6 W5 N) \7 E6 Iset [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 ))  c2 J8 r- f: J

$ s* J% q  o2 q) ~
5 a! s, B( q% `6 F" X* g0 j# g
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
% M/ R. H/ R4 Q- o;;
及时更新il的评价质量的评价+ ]3 u5 z3 X( ~+ \5 s9 [
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]7 K" ~0 g+ [; l. Q+ }' r' F
set l (l + 1)
4 E$ \7 \; [" k- M]
0 v6 x+ G7 N' K7 g7 s3 p+ bend
( H" C+ U) }( W' j: }  z
1 }0 m( t; u6 d2 M6 s+ k9 v6 Uto update-credibility-list+ r% S/ c2 G( y; G
let i 0, \4 O0 V$ w; k; c( @1 |* V  J
while[i < people]4 S5 [' p# b1 B! ~9 _( h% ?
[
: ?) P5 p! u8 F% k( W4 x" Vlet j 0
5 _) T2 H. h: j2 P, dlet note 0& ^! o, H, K: ]( T8 F
let k 0
5 Q( I3 v0 F7 H) [;;
计作出过评价的邻居节点的数目
. z! P1 ~$ [% N2 fwhile[j < people]* e& J+ `8 K! L
[
6 g: `$ S  L( U( L( V' t# ^5 B8 eif (item j( [credibility] of turtle (i + 1)) != -1)
- q: c- ?+ `# B( i- u# D;;
判断是否给本turtle的评价质量做出过评价的节点
- F9 L* c6 j) g9 a+ _8 t& U[set note (note + item j ([credibility]of turtle (i + 1))), m; e7 ~, g& v; z8 o# @) u6 U* G
;;*(exp (-(people - 2)))/(people - 2))]
- Z" W5 n$ f4 F# R; q' {) g2 v8 P
set k (k + 1)
6 Y4 t7 S( e2 Z+ u]
4 H4 B7 M- W6 o: r, s. mset j (j + 1)) [, J9 Z  c+ l8 m; q
]6 E! M" |' a, \7 d& ?8 F, ~: r3 s( R
set note (note *(exp (- (1 / k)))/ k)4 J: s% F. X* f8 I4 t
set credibility-list (replace-item i credibility-list note): i' W5 I- h9 v' e# K
set i (i + 1)) K0 S2 b$ \4 S& \0 b9 T
]
. L; r3 F1 K* P0 P4 Mend
9 Q- j1 e; _: ~* h; t# l  Z
" {  F, e% r% u1 L& ]  {to update-global-reputation-list
4 X$ ~- j+ ^5 G; S1 ?8 C5 blet j 0. @0 j& r9 p$ {9 J+ Q  T
while[j < people]8 {4 p* C& `" J
[
3 |; g7 X: d1 I0 }let new 0
+ w6 `, V* y# b' {- `  _;;
暂存新的一个全局声誉
" b' A7 K" _+ _2 X) ~let i 0& |; M% O+ ^2 K) }4 `
let sum-money 0
* g" k( z7 E6 L+ qlet credibility-money 0
' s/ A  d. f* {) p9 G: Jwhile [i < people]
# N4 r; m: Q" r$ o$ @1 d[
1 ?3 ?3 [( r/ }5 Y' pset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))" @. i* Q: ~$ M" R4 l2 L% M" j
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)), s" o" E0 M( w* a& B$ N
set i (i + 1)& h  R7 Q8 l2 w7 m8 v
]
9 @" P1 x$ t  v7 U7 Llet k 0& A% n3 r2 `* C3 X( n# s) J
let new1 0
6 Y# ~) D) O: G, J- W2 q% ?while [k < people]2 ^: Y% T- z0 {2 J4 x
[
5 }/ z% U. j* w% ?3 Oset 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)$ U. P! T6 b5 N1 P
set k (k + 1)* u9 p6 C" {: e$ x2 Q4 c5 d
]
; @% k# s6 k3 _set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 5 x) j8 U/ Y# D7 {0 Z
set global-reputation-list (replace-item j global-reputation-list new)
/ C( J: Z( @, ]set j (j + 1); p9 l( w: C& }( L0 X
]9 \$ N# }7 Z- A
end
2 G7 P* J0 P7 i2 K" U/ k8 l6 B& M0 ]
$ u; u) I+ G" r$ w3 Z2 G0 H5 Z: l& n6 R" D& C$ D$ i4 N! A" @

" k$ `- [  s0 L% Gto get-color9 e8 ^4 {& ?! d' E
2 V& u0 Y1 s6 ^+ e! v1 X
set color blue

5 F- Y6 d4 c- D( [& n$ Uend
& R, G. S" v! `7 y3 a- q7 n
  x% I  P9 q' zto poll-class/ X1 B# x" s" O6 p' R4 ?) L: h
end: |7 f  Q( O6 w* c" r

9 j' N1 m3 Z$ \5 \. x/ ^to setup-plot1, j( `/ U' C9 l6 L& a& h

- E( ~" ]$ f% ^$ a. S" s4 H: Fset-current-plot "Trends-of-Local-reputation"

9 E( y9 o0 b5 `2 j4 M. F6 p5 S* s9 a  h8 Y# S# G* o* N
set-plot-x-range 0 xmax

/ J, h; u, `- x6 A, I
7 `1 A' {3 u% x" qset-plot-y-range 0.0 ymax
% ]9 Z" {: L7 M( V  B
end
4 ^  D, ]" Q4 _! p9 h) y, Z. {/ T9 C- H! D# V. C
to setup-plot2
& M" y+ S% i/ T$ d8 O: I; j: }- R$ z& ^6 k7 h9 @7 I/ Q  z) d
set-current-plot "Trends-of-global-reputation"

1 l* ^4 Y6 V" O2 f4 N- S( W  i( G$ N9 K
/ t* E9 r7 r" ?! r6 ~+ |set-plot-x-range 0 xmax

: T! v0 w. z( F
$ _* F& _, s; \/ x+ Lset-plot-y-range 0.0 ymax
3 ?( p7 K9 y* X) z  v3 R5 _8 r
end
+ T$ Z/ h  I  A* ^/ x) i7 ~; |6 W- n; h/ P
to setup-plot3
# V& U% }! X/ `9 L7 f% H* H2 W" ?$ a8 i" }: W
set-current-plot "Trends-of-credibility"
9 D/ A3 O3 Z2 G' M

# v% W) w; _) D  D: z' y) Xset-plot-x-range 0 xmax

# h6 t. o: Q, Q1 J) k+ H8 @+ ?0 S* |7 D/ D5 M+ f0 r6 I- y' U
set-plot-y-range 0.0 ymax

6 I, a3 B) y& @" F7 Dend
/ o# m& o9 y( E3 D% M* A, E* e
! g  L7 `* P! O" ]to do-plots
) L8 d8 R5 ?, F  _set-current-plot "Trends-of-Local-reputation"0 }; x3 ^9 E1 H( G) e" j+ ^, y
set-current-plot-pen "Honest service"
7 _. T. k0 T/ ^0 fend0 D9 |( b) d  B# A; w1 h+ R1 l/ c3 d

. b- o" k) K6 b  a  b  b# e; 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.. \* Y( ~9 @$ G* y6 p

. n" g8 W1 L! \+ r1 v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, 2026-8-27 10:58 , Processed in 0.018382 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