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: 18395|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:& c* g0 M, K7 J6 b" l" I  K0 v7 j8 i
to do-business - I' @$ ~) O! p' X$ q" M
rt random 360) h2 V0 m2 ?! r' O" ^
fd 1
9 t6 g, l& z: n0 B' O0 v# K' W7 A ifelse(other turtles-here != nobody)[3 T; E6 Y1 |0 R4 y; U/ J) z, f8 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 _5 b3 u) I5 M6 r' Z
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    % c$ c# I$ L9 N7 A
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
0 q4 {' B+ d- s% w   set [trade-record-one-len] of self length [trade-record-one] of self
) ~* I/ X: _, F! ?$ {( ?2 A   set trade-record-current( list (timer) (random money-upper-limit))5 c% V- D0 u+ P* q

7 j5 ^* Z8 W9 s6 [问题的提示如下:+ g9 v2 t! _' |% x; U- Q
9 e- h, o2 W) n1 x+ X% _
error while turtle 50 running OF in procedure DO-BUSINESS
" q& G1 ~9 ]! _' n  called by procedure GO5 T4 O  d/ |3 z8 U, b! B) c
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
4 w# ~. R  M% P
(halted running of go)
  J7 x/ H6 p" p0 |# e4 I( ]
. w$ }  l% O' f# W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 r8 F. X) ?. Q9 i6 o& W: p  H) v2 _0 y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: S' Y* q& I. \3 m& u
globals[. r& u3 B- [1 ]2 C! K# X$ L
xmax
% d2 C0 Z1 q% t/ G5 @ymax
! t! O5 P. U& @0 C) S- Qglobal-reputation-list
  U4 x+ `* E: L% _2 |- ~$ d2 ^* a$ r
;;
每一个turtle的全局声誉都存在此LIST9 ?& W1 ?" |& h& S
credibility-list
; \) J. U& v  _4 G; @0 R;;
每一个turtle的评价可信度: g" I; w- `* Q+ W! H. |
honest-service
0 W, B: X' {( s+ o! bunhonest-service1 z- J, Y$ d  P/ Z
oscillation
' o, Q6 C( o( c- f+ \' grand-dynamic9 {! d/ l9 w) z- ]
]
  v2 N5 A7 N; d) m. W" X& @* G$ W" s: Y: q8 s
turtles-own[
9 A9 h6 B, b4 v* M! Ntrade-record-all
9 G2 n" Z; N& q6 j! c: F;;a list of lists,
trade-record-one组成9 w2 n  V# J( p" \+ s& R2 a$ z# N
trade-record-one' |! o/ b% i9 M/ K, t) p
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
( @5 U( n* i4 H& ], |, w/ P8 ^9 {8 B& g. ~- }. P, ~% M' ^
;;[
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]]+ I) ?* v, K, {9 q
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]
( _# p% \) m$ `% i, k; Bcredibility-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list0 `" y# v" o' X. R0 q7 i9 s# m9 B
neighbor-total
2 M- D1 _6 `7 @  I( z" \/ R5 K;;
记录该turtle的邻居节点的数目3 [- Z( N, v# l& Z+ f) Q. K" v+ e
trade-time5 L) f( l) B8 b* a
;;
当前发生交易的turtle的交易时间6 e3 W1 ]+ a: q% P+ p2 F
appraise-give; m5 s9 t7 H  y$ p+ x
;;
当前发生交易时给出的评价
- T: J8 G7 d( O+ D! [appraise-receive
- {/ q, v4 {5 A9 V' b4 ^" f;;
当前发生交易时收到的评价
) {7 ?" C' i+ K, d% nappraise-time( Q) d( B, [/ `$ \( @) W! ~5 v. L
;;
当前发生交易时的评价时间9 X4 F' n0 B4 b, P5 T& ~9 Q
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
" O( D0 b8 q  n8 {8 k. y" j. C5 mtrade-times-total" X& K* @+ J( _" J5 Q" k
;;
与当前turtle的交易总次数" U) D7 l- N. r1 V% A3 h" z
trade-money-total
" _0 R$ E" r: [2 m$ ^. };;
与当前turtle的交易总金额
7 e/ V( z- S0 w2 A  b) r- Dlocal-reputation. ~, u, W, {7 q+ R/ z
global-reputation
5 O* v- y4 H$ n4 m- {6 L2 J- r$ fcredibility
3 z0 O- {% p$ E8 e  F5 [: N;;
评价可信度,每次交易后都需要更新& R# J7 a* B% h9 V" x
credibility-all
# f4 X5 r, y/ ^8 g2 O+ Y6 U;;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+ O) Y) {# k0 `/ m- k
' i, v: `( w$ p& j
;;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( R1 @) j" s$ |% T; \7 U' I
credibility-one
# @4 f5 g. n* X;;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" c  F5 Q- h: Fglobal-proportion5 J9 a+ I' J# p7 L: S2 K
customer9 }6 \  I0 s4 q* E1 b* D; s
customer-no
9 c9 G" r( s2 F2 Q/ Ttrust-ok% ]5 b( u" g/ {& Q+ I/ r
trade-record-one-len;;trade-record-one的长度% w1 N& I2 f6 l9 X1 L
]$ Z5 ^  H6 F* P: o; m  s
# {, i- @4 V& _1 ~
;;setup procedure! e0 t% l, v  D: T" ?' U8 F

. M% k- O0 Y! [: Z5 `to setup
, N. M5 \# f6 {& s  z5 H( `2 @9 j" Y$ v  z+ Q
ca

0 `" a" y4 z* l
# k+ t/ o2 B/ x/ ^( D: \initialize-settings
0 _1 H& ]2 E$ n& q
+ P, J! f/ ^% y4 _. [+ @
crt people [setup-turtles]
0 l6 v1 V0 l1 G. b8 Y2 h/ ^9 X
* o, c% i0 _0 W; H
reset-timer
; r; p" B8 s8 E0 a) A& p2 I8 F7 m0 @/ C

9 Y9 H. ?4 _& J7 Spoll-class

$ n5 A, `. R* z/ k2 F
; i1 ^( T- m+ G% y3 s: y! B0 x2 Usetup-plots

9 ~/ o. p8 A3 ]5 ]" ^; p
( @1 B; Q2 F9 M- K4 Rdo-plots
+ r! E6 C" O  c4 B, u4 I. O7 A
end( B: j! r2 [0 i: c
! D9 ~# s: M% d" E6 O4 f
to initialize-settings
& l* @- R$ ~3 X& U/ v* I3 ~3 r8 K) b. W
set global-reputation-list []
0 _/ \1 L. Z1 v- z2 W" e+ {. J, {
1 e! S: k3 [- S7 c$ Z& B* F% L$ A4 D
set credibility-list n-values people [0.5]

& ^: x; C  R. l1 o* B1 r+ A% ^: A0 a2 [* _
set honest-service 0
9 u/ ^* g: S8 ?0 k  u# ^$ p: T) |

+ g4 L6 [! t+ v$ B+ lset unhonest-service 0
4 ]- ~5 e5 ]- j' n0 g( F' C

9 H- e. H  J0 _9 r, \' jset oscillation 0

% N( c( i$ O9 v: a) A
/ s$ Y7 v/ T* V# n1 f* w- Xset rand-dynamic 0
# X" V; g# q- g; m+ `+ T
end
) Q* x, _* E/ X# i
8 Q+ ]  U/ ?) r8 g9 J( _0 e  H# \. Kto setup-turtles
; E6 o/ g9 ~0 r2 P3 qset shape "person"
( |( P( U' [7 w; H. Usetxy random-xcor random-ycor5 r6 a! J$ P+ j5 y! g# c
set trade-record-one []
" `2 q) S. Q! V; M

+ `/ s4 j1 d- ~4 e* l2 F, {! ]set trade-record-all n-values people [(list (? + 1) 0 0)]
, W+ X' _8 i/ @9 j% h
1 B2 L$ l5 u0 ^: c+ y
set trade-record-current []
8 O. p; s7 S) d4 F5 }9 z& E, Xset credibility-receive []
2 y- N  M& H* A$ }8 K0 o# i, r* O$ wset local-reputation 0.5
# T! i) ^1 }- E* wset neighbor-total 0; C) ]" J1 u7 _$ I0 H' H; p
set trade-times-total 0
0 Q. J4 ^& i" [" U9 o2 C/ Z4 |set trade-money-total 0
5 [& L4 |9 C6 {0 B5 t7 ?set customer nobody& o9 ^' D: v1 u7 ]7 R: ]
set credibility-all n-values people [creat-credibility]% Z! J* f7 q/ B6 P6 q6 h
set credibility n-values people [-1]1 I7 J2 h7 L. z$ n0 J8 f6 W; J! `
get-color, _: T1 L7 @1 [- V$ F# g1 v5 f

% @. t. O) F, Q& u) ~. ^end& @9 `5 m! c  m; C1 |

4 A! k4 A& o. `; R0 Hto-report creat-credibility
4 o) Q. H2 N9 O. @report n-values people [0.5]
3 [) ?5 w9 l) }; q! qend
3 N+ x+ C* V8 N4 B5 Z- V5 t8 E3 u  n1 R& t
to setup-plots
8 f) |5 ?' x& K2 U4 o7 w. q
' K, p- G5 g" |4 I4 [" `set xmax 30
: |) \5 |, f% e. I

1 E. T0 D6 t4 Y" Mset ymax 1.0
) V; m" R* q$ \+ t! y

! K) u/ g* Y  Q: N* O: c  G" [clear-all-plots

2 C/ R" Y9 n+ L0 V( Q! U1 t9 C: a  u: r
setup-plot1

; d- w3 q  V4 x+ ]% N) T! |" {& k- n* {! J, u" ^, T' _
setup-plot2
0 v) M. ]& R3 s8 T/ y

. `7 l" w* ?8 i6 x% o! c+ v* isetup-plot3

# j) N' ]% @: q, Wend0 x  O  g* p* p% ]& t# _' |. Y+ E0 E
/ }  u9 l4 R& F5 J$ w* ^+ a6 m
;;run time procedures2 U/ |+ w. m% L& _
$ Z0 ?! N! ]. h+ J4 @, Y
to go
% s- t6 L" K# f) x5 g& n  W1 {- |: M. o7 w
ask turtles [do-business]

# S5 G+ D" y3 E0 e) q0 E" yend
/ T' A( w6 B5 @' N  V8 a8 f- W7 O; R# ]' F6 `# n; H% I/ E
to do-business
/ D$ s  q" @2 U
! U: o, l  X- \4 x& w; v

+ m0 t3 A9 d3 `$ _6 `rt random 360

- ~; o: o/ C- R/ A. ?& K3 H
' \# ]7 v7 c$ Y6 c- Sfd 1
( d: T* m& R3 Z) d
- k0 ]0 Y4 a7 s; O
ifelse(other turtles-here != nobody)[

& V* c3 b& V" v# T* Y2 Q$ x
5 K6 I2 T1 `  K# L  `2 n, Kset customer one-of other turtles-here
  X* K  v3 K3 _8 \

( |" `# r, \' U2 r9 G+ q, M;; set [customer] of customer myself
  T( t3 Z# ?+ q1 M+ s( R6 c" g$ g

  l2 ?  ~" u9 V/ p! L$ ]7 O* ^set [trade-record-one] of self item (([who] of customer) - 1)
7 X/ b' X+ C0 K[trade-record-all]of self
4 T  Y) t1 b+ ?. k+ \/ g$ S/ O- S;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

+ l1 F) n" O" f- N$ O( P6 @  ]$ ?' C2 P, h7 s
set [trade-record-one] of customer item (([who] of self) - 1)6 G$ i$ |" Y" g6 H4 W( f5 \$ l
[trade-record-all]of customer

$ _5 M1 n* B  M' t1 n8 C
! L+ @8 v" E* F  S) U: aset [trade-record-one-len] of self length [trade-record-one] of self
$ J3 [: R- b0 z2 L* o. I
9 r. t) ~" x( `$ M7 r8 d5 g
set trade-record-current( list (timer) (random money-upper-limit))
1 S* R2 B% V# @! Y9 _/ c& F
+ j5 {% z4 b7 p0 a+ }* z
ask self [do-trust]
1 }" \  c* s( d& F;;
先求ij的信任度5 L  @& U7 o; x+ v. ^  P. l6 S- _
9 ?7 r/ I  N. N+ I3 e
if ([trust-ok] of self)
3 m0 U5 `* G# b# y( \# z9 L;;
根据ij的信任度来决定是否与j进行交易[0 f7 Q; [- g# e# m$ K* c4 X7 p
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
& y0 E0 M8 v) K  [+ v0 L+ q& {
- u0 j3 @" f5 l7 _[
) [2 T1 ]. J8 P& N9 K" s& c' ?

) n  ~! \4 M) i: R8 N4 I8 xdo-trade

9 L" u8 a- }& _. g& ^) a! z0 B: D
5 j4 {3 l, S, n, Q& j6 vupdate-credibility-ijl
& t2 V& s( {( A. Q
' y( q5 L% Z1 C1 E1 H
update-credibility-list
( a$ }+ i2 S( C) G# \' A
  ]& U; a+ U1 M6 N) b8 v, `

2 k% b1 a) I1 ~. ^* H  o5 H+ M- Gupdate-global-reputation-list
7 I6 x, g" a9 Z! ~& M6 e* O

5 B/ X- r. `8 K0 R8 Dpoll-class

" H% E9 s; d$ l  M" O5 g
" ~& X- x4 E6 C- M) Z& P; R6 {get-color
- o7 J5 r2 b5 Z" l& u+ `

3 S- [: r& c0 r8 i7 t]]6 T; u% Y0 u" J( i2 I
# A# e( X( n% O3 L5 E9 }
;;
如果所得的信任度满足条件,则进行交易; b) \) n* K- P" ~7 u

) |- D: S8 B) N' U, s[

* [( K$ l4 a0 D( ?& ^7 O, C8 i
rt random 360
, m8 D. G4 g- l- Y* Z) g
( P! B# {( c3 g. ^8 n- e6 _& k
fd 1
5 h- D2 n( \$ @& K, H- j
& B: M7 T/ G5 P0 K
]
( o) O- Y# ^1 e! T8 E% u& n  U* C

: w3 k. a2 E- p$ P5 k1 kend

- R) D/ g7 l8 x2 `5 Y" Q9 {* o! P# y7 B5 Z+ E  t6 e& y
to do-trust
2 |) L) H4 _4 r& W. g: Qset trust-ok False
5 h9 t4 A9 X0 o, E
) i6 e2 q* U' H# q2 E

) X3 V$ s2 Q; u# p: M- T7 ]" Ulet max-trade-times 0
- y( n" O/ }. t& M2 d8 xforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]- ~. {8 T6 P$ a) b
let max-trade-money 0- R, `( b. }* c% `$ E( Z$ N2 s8 ~8 }
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
; {4 k; F2 u2 ~% Z3 ^- e8 t' e" Q" ulet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))% `5 W) ]/ g% }+ C" \

" E' [. M4 Q# N6 G1 y/ s
  ]" h5 P# n5 }: c
get-global-proportion' W) ?' v# T! o% S
let trust-value
2 h6 h0 {' q: e7 ulocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

, A3 B2 w7 D! Y- u7 J$ Oif(trust-value > trade-trust-value)6 Y! X" a9 ]9 `3 y! T/ s, l
[set trust-ok true]
' A1 G0 `1 \, i7 k" `" U! vend
5 e( K9 l, U- [9 a6 f" j& ]: f0 _" Q& {$ D
to get-global-proportion
0 b+ `; F5 I5 E7 Pifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
$ ^# J" @( T# |% d& i" P/ o[set global-proportion 0]7 @* q. A: k* b) U2 s
[let i 0
, z6 H( c2 ?8 W- b' L6 zlet sum-money 02 c- |0 a% g: l6 K" K
while[ i < people]
1 K7 f2 e; U& b% y# _; l$ `- o[
; r, ~- L8 o, v8 ]  U$ }if( length (item i) V2 f; U$ {% |' w2 J
[trade-record-all] of customer) > 3 )
; @" \' P% _* k  O3 ?2 Z
[
. N% R7 C  @! A% D/ y+ cset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
" p% j% A+ ?1 S, f]# Z! C( m) I+ j2 A% w) U- m- q
]
4 \# E5 y7 Z' A$ B4 ^* l! Plet j 06 G$ x+ D* y/ ?
let note 0- M3 Z) Q9 `- R" E9 S; j% |
while[ j < people]
4 V3 ^, a7 Y+ N/ g. l[* c5 q& v6 q1 F( I4 n
if( length (item i
3 Z& X7 M. ]7 u, H# X& E" N& Y! o[trade-record-all] of customer) > 3 )

" ]6 E% B0 ?* v6 ?' X4 A[+ ?' Z! X3 H+ l6 A
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
) }  S$ J, {" p: E[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
' @9 i9 |5 D) v/ k5 k$ ?[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]$ d& ]% B# P* e, v7 E
]
' r% t$ O( [1 I) D]2 E2 O: s0 J! I' V% t9 N% ^" N
set global-proportion note
6 F, e$ Y( `& P- \, @7 k]
9 h$ \0 t9 p8 \* i  s' ?end
, H9 u( O) P1 r5 ~: x- }9 t! j7 `# B& c8 L; n
to do-trade9 G2 N& E$ a/ a  P1 E! `4 d. z0 i3 N
;;
这个过程实际上是给双方作出评价的过程' l7 z  o' X) O$ J; o! a
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
( Q/ L7 r) s7 ?3 b# T. Lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价) |. s" Q3 A/ P/ I3 I& _1 x$ z6 v
set trade-record-current lput(timer) trade-record-current4 [  b5 ~# l7 }
;;
评价时间: K9 ?! ?7 _3 N- i/ [9 ]
ask myself [
. Z$ r" Z3 @2 h6 r* u7 }8 ^! u! m: q' uupdate-local-reputation( P, m7 W( {3 ]* `& e3 P4 n
set trade-record-current lput([local-reputation] of myself) trade-record-current
9 x8 y% W- z% |]
8 J8 |# _* ~) o% bset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
! B' \/ o- O9 n! Q* Z;;
将此次交易的记录加入到trade-record-one! Y' H: B$ [9 X% q: y2 }7 Z2 Y
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
' l2 p; d. [3 S( G% ?; h  o+ flet note (item 2 trade-record-current )$ A, @- K0 `5 Y1 v
set trade-record-current3 \5 P+ X" _# Z# O
(replace-item 2 trade-record-current (item 3 trade-record-current))

# R4 F/ h- p# V( v6 U6 c- C$ G/ pset trade-record-current6 k0 [7 k' B; V! V% f
(replace-item 3 trade-record-current note)6 C* d+ m: h1 ?, C* G

% n; A6 V: X8 D+ u/ L5 n8 z1 L6 A' g

; d3 D8 C8 z  }5 ^+ b" X0 U" i2 cask customer [
) T5 x, b$ w3 z9 e4 S/ L' Oupdate-local-reputation% ]6 G0 z  u) Y" m
set trade-record-current
& i- U/ d+ h' U' {. z4 B# _, s2 w. ~# y(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
& m8 n  h; i- y
]7 K  R4 Z- n' }) B5 ~& z

! z5 ~; s6 _8 m' |1 q* ]
6 O8 o  Z; S1 V" C9 D' |3 T0 d
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
8 J' Q) F% a/ z' B0 P1 `( w8 i" c

) @2 F4 ?& L' D5 [, Z/ X7 `set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
9 ~6 }& N' W$ `0 s& X;;
将此次交易的记录加入到customertrade-record-all7 e6 \% q  v. z; l
end
! \* a3 D1 s3 A% Y
- A3 x+ X9 d5 mto update-local-reputation( F: v/ b7 {. _9 n9 _
set [trade-record-one-len] of myself length [trade-record-one] of myself
; {' x: l5 v' O
; ]/ c+ f. S$ i9 d8 ?" O! c
! R/ R* ]4 `' g! I* F% G. V;;if [trade-record-one-len] of myself > 3
4 \& Y% H# {' V. V# V
update-neighbor-total
+ ~- ]+ v' T% @8 G) C; U- l;;
更新邻居节点的数目,在此进行1 Z+ ]4 \6 A6 U6 h) P9 L1 F
let i 3
( e0 d9 r. y" A& n) plet sum-time 0: z) V; T7 p0 \4 q9 W
while[i < [trade-record-one-len] of myself]# }) ]/ @& }. f8 B' E- B& v( C2 T
[8 W1 O3 |+ ?3 [
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )$ |2 F0 B8 R7 e( Z& G5 l
set i" |& r: ^4 p  U# i- c) J) o$ N" ^5 ?
( i + 1)

8 T3 E+ s' F; I8 l) h]  ~9 a9 H% ]% k- u* ^: f3 p
let j 3. k) X3 y6 A3 `$ w  e( t
let sum-money 0
& A0 |9 g, Y* W) L2 w* D% Wwhile[j < [trade-record-one-len] of myself]
) S' R* \6 ~7 N3 u8 `[
$ e  J0 e' x9 L& w5 Bset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time); B( i/ H. V, t! T: d, p
set j4 x3 s* w- D) A" B% t
( j + 1)

: H+ Z! `( s* m) [5 ~]
  N  e: U$ I4 ~9 b9 I+ Rlet k 38 ^* V$ b+ Y) P: j  X
let power 0
' H: Q$ }2 f% S2 B2 Wlet local 0- @) `  ~( r2 p  q
while [k <[trade-record-one-len] of myself]* [* m  j% N* v' d0 ~, t; ^
[
* B$ N5 d1 \# vset 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) , U# m  p, J0 [0 u- |
set k (k + 1)
0 x! H$ F( E" x. T. m]- D0 E4 U1 M+ ^- d9 a5 u  g
set [local-reputation] of myself (local)& y& v) Y. g6 C7 G& Y4 g
end4 w9 Y) ~7 M' V
- Y+ Q$ R9 W! [( v1 C
to update-neighbor-total
& p8 o: A  j+ j4 F% v) S- J0 f- N# ~
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
1 q: {" y' d# s5 z& a
2 D( W9 |4 P3 G. A6 ~6 H
$ h  P: ~! u1 r& u! v" W5 T
end
' L( R' u6 a) d" O
6 X9 m; Z- C) Z' C: Gto update-credibility-ijl / N0 J7 s% ?, n5 H

) Z: E3 q( _, @& s7 @1 x;;
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 T! c  k6 l' rlet l 08 ?! G) t. V- W1 h
while[ l < people ]% a/ @# g5 ?) }% T! Z) ]4 O
;;
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' S) L) \+ B- ^9 }3 a
[
2 [' ^: Q% l; Ylet trade-record-one-j-l-len length item l ([trade-record-all] of customer)! P8 V! ^1 a. s; G' e
if (trade-record-one-j-l-len > 3)
7 Y& z: s7 U1 I[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
9 C, S8 _9 V9 w6 q% E% ~/ ?let i 37 {% g* x3 p7 b
let sum-time 0+ H/ E. ^, R, T) B4 |
while[i < trade-record-one-len]
+ U2 O% D  C) o/ `# g* o& n6 A[
: p* z/ b* G* U2 {set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
  ~4 V( v7 O, @' V0 f) a: }set i) ~9 n5 M' B9 f8 v5 k' o
( i + 1)

% f/ O! s. p8 e  ?]! X% f. }0 m% O) [6 b5 ]/ h2 }: I
let credibility-i-j-l 0) \; \* g, b( t7 |0 V
;;i
评价(jjl的评价)
5 k7 W: S. v* w9 {/ E, Olet j 3
/ P4 u& l2 ]* N5 ]let k 4
$ J9 W1 m2 ]: L7 Kwhile[j < trade-record-one-len]* U. r! r9 E0 @# ]2 v: n3 Q- E5 r; R
[6 a! h& ?! k- b
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
; x: w& s3 P0 ?1 Gset 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)
) E# ]( B$ ~5 Q3 t7 N$ Z* G: Zset j
9 w% A0 w$ q, q/ K, ]* n( j + 1)
" o$ [) r8 [) ?$ g
], n# M  \$ w' O: p
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))3 y3 N% `; s6 q! h2 N8 D
% {$ V( c  o- r/ W* D1 y2 r4 U

' D/ ~7 [. R8 E9 Y6 ilet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))+ E; e3 F* \/ b1 Q1 g8 u
;;
及时更新il的评价质量的评价
: n1 k( N, e1 z% }- S7 v+ tset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]; O: r" k* o. Q; C& X
set l (l + 1)
( P- q) |0 O. _8 h; |]
9 G; v3 F/ h& x; lend
4 [% B1 e2 j6 T" R
. l9 ^: N) t' S2 T6 O  h+ Xto update-credibility-list# r* A- j0 J/ v! Y
let i 09 H# Y( S7 e" k7 T
while[i < people]( R7 |  a2 m% `, r9 z
[
. O" S% K& c9 C. f" Q- _. vlet j 0; o. |8 h& p2 W% Q: ]+ _
let note 0
% g! Z; C7 T" l! f. M+ V  n; rlet k 0& W( x5 _4 _. |9 t1 `, l
;;
计作出过评价的邻居节点的数目
. ?/ T7 P5 c( S8 t$ Y0 Twhile[j < people], A; F7 j2 b) A( A, Y0 L
[' [% L) [! z, r( U8 ?9 }0 o/ b
if (item j( [credibility] of turtle (i + 1)) != -1)
% g' y7 ?4 p1 Z; [% X5 b- @1 p: o;;
判断是否给本turtle的评价质量做出过评价的节点
9 `. T( u( R$ v: H- D4 n; M[set note (note + item j ([credibility]of turtle (i + 1)))  @, J' Z8 e& y
;;*(exp (-(people - 2)))/(people - 2))]

& v7 D* X9 R  U  @4 Vset k (k + 1)
: c4 w! b- d1 _# d" u6 c  A+ |]" o  r6 Q* ]* H; T; k
set j (j + 1)/ I3 b$ @$ }" w  j9 w
]
3 i4 z2 t4 `6 j) Iset note (note *(exp (- (1 / k)))/ k)
0 ^6 ?6 g* w- ]' h6 Gset credibility-list (replace-item i credibility-list note)
. D' ?7 ]9 m4 D9 D9 S; f7 |& }set i (i + 1)
) Q: K& N* B: ]5 g' N]
, h9 b4 h3 W  x4 [' ~/ Xend/ x3 L# z) G& B- F, X
3 {5 y# T  \# Q! h2 G
to update-global-reputation-list- w) S% W: c$ }- F* T
let j 0# }) N0 t( o$ E# e# J
while[j < people]! G2 d3 x8 l1 _; G* b
[' z& k& R& @. q  Z- T1 N/ O
let new 0' N% b' t5 R0 z) J3 f& Q6 e
;;
暂存新的一个全局声誉9 V- V, z. O6 Q% Q
let i 0
) S& j. p# p' ^  k+ P; ~9 M: b/ Hlet sum-money 0
6 l7 R0 d! \0 c) Slet credibility-money 0/ h" a/ H& Q+ g6 S
while [i < people]/ v: _# M6 B8 r; Q1 }' I# A
[
5 G: N  w$ B# c% d0 L  Jset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
9 _/ ]: O+ [% L* j1 \7 fset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
/ q: I8 u: W& h% B3 ~/ Jset i (i + 1)
- c4 J! I% v/ [- m! K( d]! l# q' Q8 t8 z8 {( x+ Z. Q
let k 0' s7 c8 L0 m1 b9 y
let new1 0
/ w2 {9 e2 S% W7 V- ~, Ewhile [k < people], t/ c2 c% l, Y* F, }
[
' `4 j; {! l7 ]0 T) U: L3 ?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)3 ]# ]& u8 s8 H" R1 U- S6 J
set k (k + 1)
3 g- U  K) T# y) g5 H]; {% e, M0 r' \8 z) S5 y
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) / H/ d% P0 D+ @" I) R/ I
set global-reputation-list (replace-item j global-reputation-list new)4 S( l; `. n+ q- U% U. L6 y3 O
set j (j + 1)
9 a4 J7 A* L+ Z) D* G' j. `' G! H6 V]
1 z5 {/ G- `: h, |  K9 dend
" n. {2 a: L1 \' R5 P& p7 [& u- v% K6 W$ x7 u( i

6 X: V. p5 Y# X) ~/ s+ n& y6 Q$ g+ {
& z9 Y, k1 p7 @to get-color6 a. `& G5 O2 H
7 P+ E+ F) l9 e+ A# |: R
set color blue

: J0 V8 {  X5 {1 [$ ~end
- p. I* J! U; V) M/ v' k0 Z5 @# U! h) m  J2 Z7 m& I
to poll-class
8 ]+ l) K1 z# S  f1 d' o" Nend
$ n) Q/ v+ G* o3 K
# `5 x8 Q! ?* n2 G2 H$ fto setup-plot10 I# c  }) Z, }7 Z; E: C- i1 t

6 r) L# y" X! T5 o- V! o5 [8 Sset-current-plot "Trends-of-Local-reputation"

! t7 c- R- x" F$ g. t( i! F5 n0 Q) M% E
set-plot-x-range 0 xmax

! j* [/ R. I" b& B& d
( e( Y2 Y3 M$ ^set-plot-y-range 0.0 ymax

$ H- D9 C( u$ P1 `end
& v" ]0 l4 i2 q* U5 J( W
' U1 J" O2 Q' t4 d9 S4 V' j; Mto setup-plot2
1 ?% o! e$ |- v" c. ?, o0 i4 ^2 n& [1 l. ~! ^1 Q& A( y
set-current-plot "Trends-of-global-reputation"

2 S: l5 r9 r: j) S  @! ~
& ]" R8 a! K# u$ `set-plot-x-range 0 xmax

/ M7 \+ v8 E- i6 Z0 n: j4 T4 _1 |3 O. o+ [
set-plot-y-range 0.0 ymax
9 Z! Z, w6 Y7 D! X
end0 x6 L  _% `, }, |" F

& {; B2 J) p* [0 `' u" E4 }5 }to setup-plot30 \2 c( R! w9 u; R* d% N

, }) {3 M( s2 V* `set-current-plot "Trends-of-credibility"

( g" C! h+ r' g1 _1 Z' F: L3 c# F7 C" h; o% f0 ^! Y: A7 x; u
set-plot-x-range 0 xmax
" Z! S* Y5 p0 U/ f
1 M/ C, x/ z5 |& |+ F  f' L
set-plot-y-range 0.0 ymax
9 t# ~1 h! ^+ }# d& h( u8 T
end7 U' o/ {2 q/ q* f7 E
. e( Y& J7 t7 v+ ]1 W
to do-plots
6 p2 ~; p# S3 a$ mset-current-plot "Trends-of-Local-reputation"
% V5 b# R; M* j1 y# t; X; I# a* r& S& Qset-current-plot-pen "Honest service"9 ?. _+ D! {6 g: r  H5 W) e, k
end; E+ s1 Z' q- a& F

& `1 B7 a) W' m/ l" Q' q. R- b[ 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.
; T+ h$ D, W- k2 _! @. l6 o# T3 j
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, 2026-9-12 12:20 , Processed in 0.025426 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