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: 13366|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:0 @  O& A. ~5 n6 }5 m4 Y7 p
to do-business " @2 @" T, G- B/ ^* R* g5 E8 l
rt random 360
6 w$ h$ d5 d) s( F( `  Y fd 19 ~/ {9 }$ k1 H3 i- G* |
ifelse(other turtles-here != nobody)[
7 p/ k& G+ q8 E* F) h  ]) k   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.* a" n2 [9 S8 {# E5 B* l/ ?
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    * R) t2 o- w6 x& H8 V
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
. c" q. o- B& j& L( y3 j   set [trade-record-one-len] of self length [trade-record-one] of self
7 [( O1 e- y7 Q+ I; R/ M. }$ m9 T3 g   set trade-record-current( list (timer) (random money-upper-limit))
4 p1 z7 t; |/ ?7 b2 r& b: n& I
. I0 j+ Y4 d" p# ]问题的提示如下:
( [0 Q1 ^# }4 f8 C' J. \3 q
8 M( l( J4 }; p; r" Q" |2 xerror while turtle 50 running OF in procedure DO-BUSINESS- [9 {$ h4 v3 P; g- f9 B. H# K$ Y0 e
  called by procedure GO
" e1 \0 @/ f9 D9 V& T: e/ zOF expected input to be a turtle agentset or turtle but got NOBODY instead.. ?% ?# l2 [3 v$ q- X( \
(halted running of go)
$ N( D% `% O  J7 k4 \5 |  W$ A
: Z. V% H" c& ^6 `/ a& A4 G这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
2 V+ U8 ^, N! E7 `5 B+ s% m, R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0 p: q4 v5 n+ K' j/ h0 E
globals[) `0 c3 M  R3 U% L" p( k. F
xmax
( o& y1 w) h+ D' l  m" ]ymax
5 i, j' m# ]4 l- i. t8 g. d+ Fglobal-reputation-list( \0 i$ L/ p/ b" o, y
/ e* ~; W1 Z2 A1 K6 T
;;
每一个turtle的全局声誉都存在此LIST
8 g+ u% j0 J( y: N) k2 V7 Acredibility-list5 {0 v" W% a3 R; P: G
;;
每一个turtle的评价可信度/ \5 t6 [8 b3 k2 e7 _- i
honest-service# M1 F9 E9 `" s' F+ F& Z* V9 {3 Y* f- c
unhonest-service
7 \3 A* Y5 Z# I( P9 Aoscillation
2 P! C9 L3 H* a- q% a7 M: ^8 \% @6 Frand-dynamic# V5 `* R, l2 _
]" t" T/ x+ {( J. Y# M8 G

' F; [5 Y+ [$ Q# ~$ s+ Tturtles-own[
6 w3 [$ y7 V' W" ]2 n0 Xtrade-record-all! I# \% D  \8 _' j
;;a list of lists,
trade-record-one组成/ [8 Y: ?  G5 t
trade-record-one
2 |9 v( E# I2 ]9 J  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( @0 `  O& {! y: r, W6 t4 x
. w1 n) E+ k+ `6 a+ N2 v% U
;;[
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) C: `/ M  |, 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]$ R/ ^( v. A+ F: _
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
5 o* K5 V2 }- ]& ~' I% _neighbor-total
4 M9 M+ M; j: Z. e# F5 o1 k' ~;;
记录该turtle的邻居节点的数目
" i& q) b) X+ ktrade-time
+ R* q4 q3 N, N' G7 J;;
当前发生交易的turtle的交易时间+ T" B# O# W6 \7 L3 X, ]
appraise-give5 F4 e% V( j8 G7 E; X, ^/ e
;;
当前发生交易时给出的评价7 B/ @* T3 U9 I  s' o; L% H
appraise-receive
; t, D8 S  q6 n$ S: i;;
当前发生交易时收到的评价7 j* {! u8 ?8 ?( Z6 H5 b
appraise-time
: y2 z# y  {) \) X;;
当前发生交易时的评价时间
$ _- K# V& B% Elocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
# ~8 K3 O- x* Qtrade-times-total" E0 ?0 F2 T5 \+ |; h
;;
与当前turtle的交易总次数& @) s1 W, i4 j- o( f3 |
trade-money-total% b' t( T8 r& e
;;
与当前turtle的交易总金额
& ~3 S" z( H2 U5 \5 }3 z1 {local-reputation
7 l; C' D% `: i( E* Cglobal-reputation1 D7 Q$ {7 i/ E& h) m
credibility
& @9 ~; J8 u8 r0 ?& T2 U1 u3 `;;
评价可信度,每次交易后都需要更新
4 K0 Q4 w) E+ ]credibility-all
% G( H; [+ Q9 q! 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$ ?/ b: G: U0 A' R+ w
5 c; I, `/ B, F) `1 X; g2 @& G
;;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
3 ?8 u" f0 J5 U* Ycredibility-one7 g' K6 t( `" u4 }! Z' `6 N& }
;;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) B+ X, ^/ v# a2 U
global-proportion
2 j9 C) _" w! `9 B9 ]! T; o: ]5 Scustomer
8 C7 j9 E" U5 H) P; a; ^customer-no% |0 K- G* Q  w) U
trust-ok
% `" D  N- s: j( ctrade-record-one-len;;trade-record-one的长度
% J+ _- B: ~8 x8 V0 ]]: i9 K$ m! a5 W* U3 x1 n4 `& h

- o* p& o' {5 r# M. ?) ^;;setup procedure
2 P8 A  e# z, j+ N2 W# L  q% t9 b* Q
. W5 B2 O* w1 k! i3 `7 fto setup
& f0 j' X6 ?$ X8 g7 m
. V$ \% ^4 O4 m2 i8 Zca

6 @& F% G2 F) A  h
! H) |7 r" X* U0 [" y4 L. einitialize-settings
! A1 f/ Y4 ^2 E

" T' a* V- @0 D  R6 }9 ^- A2 Ucrt people [setup-turtles]
4 n8 ^3 `& p2 }! m- J" d
0 f; Y0 d/ a# O! @! S
reset-timer
/ x% d$ M" u" W

) M9 l  x; w4 }1 I! _9 ipoll-class

6 V" h+ Y4 t& a! I" J7 P8 Z* m8 Q! q
setup-plots

  c* |. n( A/ W8 \5 m$ A" F9 Y" K
' }% \2 s" w; c  y; d" ~! y/ Ddo-plots
3 Z; U' U0 D9 {( A
end
+ N) Z! W* \- r# h
4 ?, b6 d& R- {- Y; [0 Vto initialize-settings
' F! M# s. b2 ^+ L+ G; n/ [7 t8 H+ Z" }
set global-reputation-list []

* s- f7 B5 T/ k4 x4 l, y
# {' v" O1 f+ z/ m9 X$ |8 N% oset credibility-list n-values people [0.5]
( W( L8 s4 B9 }* t
6 K$ _9 Y2 i1 e  J7 M, a( K
set honest-service 0
. M* j' z! v3 ?) i  k+ J; u

4 t) u5 l- {' fset unhonest-service 0
* J; W$ P. X( @; k: R/ [2 u; c. _

  m, F% M$ h# J5 Xset oscillation 0

! F; b: L; v% Q! k. _4 U
; \5 j3 m$ m- W( pset rand-dynamic 0

0 k$ \+ b: \, x$ e, i) x( dend) Y3 q1 M0 Z9 z& m+ Z
  ]4 F( T+ T& u6 q, ~4 a0 Q
to setup-turtles
  _% \( z( E' W  A& Mset shape "person"
/ x# w, c$ i, A+ D  U1 F' Ysetxy random-xcor random-ycor
! E1 N1 Y) O0 t9 x4 I' q: Iset trade-record-one []# |# {; L9 R1 J6 ^/ z. N

! F  U. J2 M6 E% {2 t6 E" Oset trade-record-all n-values people [(list (? + 1) 0 0)]
; p; M2 T( A' N

# {0 G: E4 o0 ]set trade-record-current []
0 r! T  O3 d" C" Q* f( Sset credibility-receive []
6 q9 q2 P9 M) x2 f$ o7 r; [6 F1 aset local-reputation 0.5' M% R1 B" q: j( O. m: D2 I- P
set neighbor-total 0
, F/ A9 ~/ ~0 k. h! E9 ~3 Q1 ?1 A$ A5 Bset trade-times-total 0
5 ?0 E; L  V3 V0 [+ p& h9 tset trade-money-total 0
, Y' V% V" k$ qset customer nobody
4 ]- ^& ^+ N. H4 b4 `: lset credibility-all n-values people [creat-credibility]$ b& C" E. D4 ~) B6 }9 B6 N
set credibility n-values people [-1]
; A! g  u+ o- [: P9 ~5 l! z+ Eget-color
6 h# a$ N( a  {( }& ~% j2 l
1 T# e, t" s$ ?
end& V3 y' f: T- x) [$ B+ A$ r
! ^. o2 a" @5 ~% C8 A0 @* f
to-report creat-credibility
4 `. X: o" T+ m( Rreport n-values people [0.5]
9 M4 p" G/ t3 L* Hend
  f+ |) P8 p( ?! S9 D& r, t4 ?7 m( D7 l( \. r
to setup-plots/ z: M3 u8 J9 n3 q, ~

; m1 l, t+ s1 k- S1 Y2 Yset xmax 30

  c* J6 ?  i2 [$ y
- m8 y/ Q9 x$ s7 h0 qset ymax 1.0

/ Y. L  ~( t: I6 v% Z9 ~) B2 d  r, }7 K5 h
clear-all-plots

$ t; }1 D5 ~; @
9 u) g: V# N( \9 v6 \* }8 q. @setup-plot1
; C2 {. O# {' F" n( A7 N0 E
3 g+ J2 J3 k5 L9 a  f) O7 ^. Y
setup-plot2

, o0 R( J$ v% Q( R6 c( X; s1 z  U- k0 R( [
setup-plot3

# Z, x2 ]' }7 ?end
* P! H8 U8 R8 D; x5 t1 E2 v. ]( A4 F6 P$ ?. r% A, X
;;run time procedures0 Y, y3 ^* Z$ p. H" R' k
: c# \4 Y) V8 N4 D
to go
( L* }& Y3 Z2 O1 K; L( G. c. G0 V) H# c! e. }
ask turtles [do-business]

+ l0 H  [& Z- U4 a* ?% Bend" w) {! t5 [8 L

3 L6 P' ?) o: Z* B2 x, bto do-business
, q+ J2 P* i0 ]5 U0 p; c

. Z7 F6 v8 K2 H* m1 g" C* r
" a6 [  v3 k! j. r$ d6 {/ Crt random 360

$ m5 h; e% ^2 j2 G- P) ^' O3 v# @) R5 K+ o% k# A* \, w2 \9 g% T
fd 1

4 H9 _, m& ~$ r0 x+ {' K! l( @% Y$ y8 _$ ~3 W
ifelse(other turtles-here != nobody)[

/ o2 T* o$ @1 U' {% ~7 I6 b
# W' B' W/ }3 J0 q4 ^+ yset customer one-of other turtles-here

4 z+ p8 M" ^3 ?3 `6 n: y; n
- t$ I1 g( j5 p( A! v% e3 Z: `* Y, J;; set [customer] of customer myself
" T8 U7 B: P' q

6 ]: f- E! q. Z- T. l; {set [trade-record-one] of self item (([who] of customer) - 1)1 m# B) n( g: ]# h0 e& w
[trade-record-all]of self
" v- c: G' A9 s( u;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

2 _8 y" ~- k; i7 {& [7 h
$ G5 t, T& W! N% ]set [trade-record-one] of customer item (([who] of self) - 1)
  A8 j- e+ Q' o* _[trade-record-all]of customer
3 [) \7 m$ O& [& d7 q( G

; [6 I# q& ~' i/ K  Pset [trade-record-one-len] of self length [trade-record-one] of self
. }( Y7 c2 D: e( d

: p, |% R: }! i, C4 h1 f9 Oset trade-record-current( list (timer) (random money-upper-limit))
# s+ F) w' `1 U, n
/ o" D( w; Q0 O- S
ask self [do-trust]
; y' F9 ]5 h" K, C+ j' E;;
先求ij的信任度
, b. Q8 j: C. N  S" Z$ e
/ V, N5 d3 f/ }* qif ([trust-ok] of self)' f0 Q3 q3 g- ~7 M$ |8 l
;;
根据ij的信任度来决定是否与j进行交易[( z% H3 Y6 D8 [, g4 m/ K4 }
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
6 b. n2 a7 m  W8 x: K2 x
' Z6 l+ m6 }; B, ]+ P, M[

' K2 M3 _5 R' l2 \2 {6 W/ I1 u# V* ~
& g; b: t3 [( o3 `& L7 T7 Fdo-trade
8 I. \" E' V. j4 i* {, p

& P- T3 ?7 N6 M2 [7 n1 e3 V; Zupdate-credibility-ijl

: ]* t9 q- r: X! t
" s+ ?2 K7 q+ H9 t0 N; X, Tupdate-credibility-list
8 [1 b! f$ ]- d* s2 i, Z+ x
1 O# J& T: R9 G" @" _* K* N
- X1 ^  q$ r8 E$ a$ g* ^
update-global-reputation-list
) L0 k5 X* B% y1 M

$ O# K4 L) Z, A, p; N' n2 C, jpoll-class
. a& }* H: e! P! Y3 h: d! l
0 i! }( [& X) r. N& N$ v- i; Q
get-color

# w9 X7 R! W5 f' L& h, f4 ?9 j5 p, `5 ^* \" A- ~
]]+ j3 ~- }% {8 W% ?2 X% d

4 W$ }" m  F+ x( j. y;;
如果所得的信任度满足条件,则进行交易
# p' `$ y  j3 C7 D1 e+ E% J3 b1 X4 w
! h! N+ R; n6 s' q[

6 u! i9 }) g9 C' h5 f7 w8 t6 T  J2 w
rt random 360
8 X/ ?2 f% t8 s6 b7 D7 y2 Q' Y3 C
2 Z% Y8 V# U7 ^# |* y) F
fd 1

$ v3 k. I4 f% N) `0 r  g* i* `
+ J2 H/ q4 E5 j1 I" M]
9 J( q' \" k1 |% \/ F
4 |% C# }% U; ~$ V
end
7 h& l* S$ c7 V1 L. ^- F- X' l

- X: t* B" e& c& o, Pto do-trust
: {) s9 Z) ]  i. Qset trust-ok False1 C+ @# w% ]+ ~9 s* Z4 @4 f  \" P
( j( \) z, i5 d0 U  F

; E, G3 _* o! z7 olet max-trade-times 0
8 w8 p- u) G3 h6 |- J6 t0 Rforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]5 f! `' y- g& I
let max-trade-money 0
7 N5 `4 |* z6 `9 w  T5 I5 Nforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
! X; {9 n! @3 M5 {2 Elet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
+ z3 `4 c$ f! M' d; y
! F6 J, S$ m. L9 z& r1 c4 h

) E2 t5 y9 e: z* }( ^4 r: gget-global-proportion
( t; Z: ]1 d; B' C4 [5 D3 n+ blet trust-value
7 e  h! W1 n' N1 Z4 C7 Llocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

- }+ N+ i7 B% n" |9 m! _" |4 Uif(trust-value > trade-trust-value)' @; |4 b/ ~5 G$ z1 E' a+ r
[set trust-ok true]
& K3 I3 a# N/ u3 Fend2 V# P! x) E. k7 P/ u' }
9 l) ?- l, q0 u; `/ B/ W
to get-global-proportion9 a$ u( W$ m( m) {1 N7 W" v
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)/ O. W/ F6 p: T0 Y* @- b2 S: \) {
[set global-proportion 0]
: O8 r# K" Q$ }0 q* p7 X[let i 0" s" y( H0 T+ A+ X( \( q4 q3 }, {; @
let sum-money 0! c. p  W0 r' q. q
while[ i < people]
1 H, {3 K4 A+ M- ]: j. O* d2 v2 p[
% `# i- B/ q, f, {' |% Aif( length (item i0 p* D, L. M1 T7 w
[trade-record-all] of customer) > 3 )

& O  D0 d+ V/ f% K' j  @' v9 Z[
( S0 Z: Z$ a6 O5 P. kset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
6 A4 p7 [+ k8 F0 l) d]; d5 G" P" q" C, A
]4 G, B: u- i* U  B$ x' z8 [& r9 n  E* ^
let j 0
6 I0 T9 Z# m! H4 S, T9 x  [let note 00 U3 i' m: R, V( s& W: A1 B% U5 }
while[ j < people]: j- p- k' k9 q5 h1 }
[
4 q9 N$ S! j* t  Qif( length (item i
- Q9 P% i& R# E; j% q+ c[trade-record-all] of customer) > 3 )
5 }  K8 ]( G# _' i" r6 x2 A; d1 B
[
# O2 w& w$ Y' q+ D/ Q$ v3 mifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
+ [! j$ m1 ^- E3 o. }* p6 Y% l[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
5 D" b9 m. V4 k  o4 W/ o& c[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]& \3 Y/ @2 \1 n+ w. u- d$ r$ E
]
/ r# O  h, h+ g& R+ _. _]
% P5 Y5 L) v8 W5 O8 sset global-proportion note  m# A- N9 Y) E# g# q
]& r6 m6 _- p* w, u% r( _
end' D" ^9 k( e( v, t  F/ j: |' i$ U

# |' R! d& a2 S  Uto do-trade
2 N7 U" L6 o1 M;;
这个过程实际上是给双方作出评价的过程
/ V; D1 y: }6 k& W5 E; Lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
/ y% a  F7 ]+ [4 G, k3 c- yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
7 o/ G  O; i6 n- |( cset trade-record-current lput(timer) trade-record-current
, Q" A0 R8 D, A;;
评价时间
+ ~; J- W4 B% p# f  g2 T8 A  H9 `ask myself [( s$ y% e: b4 q! Z  ^1 J
update-local-reputation, p5 |3 U: Z4 `$ d8 x
set trade-record-current lput([local-reputation] of myself) trade-record-current
! k) b+ b" t8 p. Q) L]* h* c+ @3 N1 L: [3 L
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
. y' M0 o& Q% s) X' h;;
将此次交易的记录加入到trade-record-one( `* M+ u2 @. I- C* U+ n; C! a: ?
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
4 ~8 U: p4 m9 m% {. g( Q4 olet note (item 2 trade-record-current )
6 F  g0 q* A8 M8 i2 V: j& xset trade-record-current6 r/ c% U' d- h. q* C
(replace-item 2 trade-record-current (item 3 trade-record-current))

/ v% F, p5 \& n2 D) I+ |& Pset trade-record-current
$ p/ _" O8 K9 L8 J! D(replace-item 3 trade-record-current note)2 W; s1 t( N0 p5 F4 u4 w
+ |- C9 Q% {& ~, G

  ?! d* `- ~! Oask customer [
7 L! h6 P* w+ |update-local-reputation$ k  t+ V7 u( E
set trade-record-current% S3 t! M9 P$ a8 \2 A) B# r9 e( L1 g
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
. y) {* k% z, b
]
1 ~4 H3 @) Y' T! G. f4 @9 K  O( z2 Z- s7 o/ x! @: G

0 Z1 l7 F& u, R  nset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer( g/ b" Y3 Q9 P$ J$ C) o

: t* D! p6 O$ g( G/ n' O( {4 sset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))# W, J8 a7 ]& {7 ^# q4 N7 a
;;
将此次交易的记录加入到customertrade-record-all
5 Z( s8 C% g. u2 Vend
6 R& B6 k! \$ X* s1 c( {
8 X; a3 F; h+ Y$ V6 k: u7 _to update-local-reputation# u- ?1 b4 j% ]7 ^
set [trade-record-one-len] of myself length [trade-record-one] of myself; [4 n& k, Y, x9 ]: i* h
0 Z+ [  k# H9 ^4 V! L5 J, D
4 s, K: l0 c. t7 ~  Q( k5 D) ~
;;if [trade-record-one-len] of myself > 3

9 Y' c' l. [5 g4 \; j& t3 T7 Wupdate-neighbor-total
4 L* ^2 y* I4 e/ f1 z5 Q;;
更新邻居节点的数目,在此进行
4 e% i+ [4 O0 F: Blet i 3; K# R: B, M$ }$ a
let sum-time 0
) P8 G  t2 D% {6 X! i/ }! N* Wwhile[i < [trade-record-one-len] of myself]8 l; n$ ]7 V7 t  E) ]
[: i9 k+ q  Q2 k$ h
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
) q7 V' ^: G- w, V; e, m% G) yset i
  p" ]: W4 B9 R& f( i + 1)
( f) y, w' A) s: \: Z& v
]
3 Y6 c9 {+ O0 ]# e1 ilet j 3
% V( V0 U3 L& C/ d7 @let sum-money 0* @# t  q$ ^. X, T, n3 n; o
while[j < [trade-record-one-len] of myself]- ~. W0 c) t- x9 `
[
' g8 Z3 a* |  N6 q" t0 d$ pset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)0 n! p* [" C* y+ t
set j
5 A3 Q+ e% {$ R7 K9 }4 l. b( j + 1)
  N( h3 T$ L, O0 |
]
) I; g7 S( E, T4 plet k 3
! V; [- I; h6 G' W# a9 H2 Blet power 0
+ e# y! F1 g0 h6 m  t% }0 Wlet local 0; K0 ~% S& z+ g, X- |
while [k <[trade-record-one-len] of myself]/ }1 Y$ g' d' q' d
[
  k. \" K  U6 G4 P* Y* yset 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) * H! z- I. M& v4 [( [" C
set k (k + 1), k3 W& u% B" @1 i
]5 q! R% b. k- i) v3 l( @
set [local-reputation] of myself (local)
# \& f( R- E8 h, |  j% Uend% P0 _, T1 G% L/ ]" t
; b3 o4 Q% a% i% g- J7 l+ {
to update-neighbor-total6 I$ i6 G& |; Z) B. Z( ~

7 m/ Y# ]: L, T  |. dif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
5 |/ L& f0 d& D2 L& n1 H' \  V8 ?* A2 z5 k  p' ^7 V

) F( n1 S, H9 B0 ^9 Aend! X5 e, L2 \$ K0 [5 ]* t

0 N. ], u' y4 F  }; i+ kto update-credibility-ijl
! c. \; o" V% c  u, j# p* {6 n( }! _
;;
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。
8 ^# u- M9 L3 y: N$ l0 n, Wlet l 0
3 P/ }3 D9 G6 L9 l" U1 A" ^5 rwhile[ l < people ]: G" X  ]% G- j8 m( d
;;
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. r- g' `" R1 a
[; K: S7 i% ~& C9 Y  _
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
! S" H! f5 J1 }+ T" B/ Q! Cif (trade-record-one-j-l-len > 3)
# Q$ m) j4 u5 @: w( q" T) j+ @[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( M' `+ J/ _$ L) q+ D1 W) e
let i 39 G) C  ]( M- W
let sum-time 04 a' b- z( c# H) h. T! S
while[i < trade-record-one-len]# e' W7 i2 i! ]6 N" K
[
3 b, K# Q: e/ iset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )3 b1 k0 \9 G3 A! N( k
set i: x7 w3 s: n; m2 o& n
( i + 1)
* G/ g  ~5 z( {) B& i/ K6 ?* r4 T* w/ g
]" @6 W$ U5 F+ B9 g3 w  W
let credibility-i-j-l 0
3 V. h8 k, n7 R3 p7 l4 h/ y;;i
评价(jjl的评价)
/ u. \* ^; v& {4 O& a; }# o* K, mlet j 3
' A9 s$ S; r2 tlet k 42 g6 P' O5 Z3 h6 k3 i+ m
while[j < trade-record-one-len]
1 x! D% y: N3 u0 z* H[0 ?: V$ y: b- z
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
* C, x' V' V! i5 uset 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)
& S6 U2 w/ ^  d$ e/ F7 _set j6 L0 X, _9 p* \: l/ N* j, m. ?8 k
( j + 1)

& ?9 O% Z4 X' }4 z]
& o0 l5 s* O* ]1 }9 ?' 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 ))$ t9 F3 n9 C8 Q5 ~9 e

4 e0 e4 U7 n' G4 ?4 @& M* w
/ }4 j, ]* R# X' D
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
( f7 u1 v: |5 s0 u* N7 c* }9 A;;
及时更新il的评价质量的评价$ L* a; W6 U( o8 ^& F* p
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]7 y1 n. l* n/ u$ @: t
set l (l + 1)/ B& [& z" e7 {- ?8 W! @: A
]# A% D+ ]( g# V9 t0 T& `9 C
end% @3 x( s' ^% s& h

& @, c+ G1 e- U! rto update-credibility-list8 |2 {' B! N5 F  }) s4 m6 T+ [
let i 0
. e' F- ~0 }7 }4 A, Owhile[i < people]! x* K$ G2 _. j0 N0 i! P
[
& F* t! h( A& M2 plet j 0) k7 t; n0 L7 c$ b* E! i: }
let note 0
8 B  Y1 d' v+ S0 b6 I- ulet k 0
; L$ f. s2 v3 ?' g/ E% b;;
计作出过评价的邻居节点的数目
3 O) O+ z" b( b0 Q" @% Jwhile[j < people]
0 y' A. I+ y  r8 q+ ~% q- q[
) n0 G) m7 Y: J' p0 l) Dif (item j( [credibility] of turtle (i + 1)) != -1)
+ v5 U5 x: l5 B- G;;
判断是否给本turtle的评价质量做出过评价的节点
2 V5 X1 U& e4 K1 M2 t. @8 U[set note (note + item j ([credibility]of turtle (i + 1)))( w, ^: l3 ^/ t. z$ }2 B6 {
;;*(exp (-(people - 2)))/(people - 2))]

8 l' K- H% a/ [% @/ H+ f. jset k (k + 1)( r2 g2 w4 H7 F3 Y* T5 _5 n
]' e5 L& i$ `, s
set j (j + 1)
) `( U' m  }+ j, l# i# ]; q]
' l3 c) |$ a7 d( ^1 cset note (note *(exp (- (1 / k)))/ k)1 x4 r# e* b. ]. S. E
set credibility-list (replace-item i credibility-list note)
% a, M! ~3 t; F4 Yset i (i + 1)5 P* N! G' g3 v5 Y4 w
]4 b9 j4 d- o4 s  k7 Z/ j
end
8 Y+ o$ z" J9 B* h, ^( K1 U0 f! `# V, q3 r/ n+ A( S, h
to update-global-reputation-list$ v2 u5 |: E2 b- C( ~# M
let j 0
, J& `3 J6 J8 h- T% T9 uwhile[j < people]2 c) N$ ~+ [8 ^0 q! K
[) h( z. p7 l: M, j0 g/ n! ^
let new 0
3 p* ?4 z; h. W, i% |4 W;;
暂存新的一个全局声誉
- [8 T1 e/ j8 K/ g& i# |$ alet i 0  H+ r' Q  X+ s+ _$ S. ^5 i7 u2 O
let sum-money 0( Y# e) g* o/ T; \$ j
let credibility-money 0& N% T# w, E: Y- ^9 Q( {- W
while [i < people]+ q- O% W/ o( \9 m5 }/ V
[9 S& O! S6 y. N9 d
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
- N, }3 S+ |; J. P; Q) rset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
0 j! b' ^5 Z- b: Q( [set i (i + 1)0 W4 T# `( I! x# \" S
]0 X2 i! Z( J6 Q! z  P! S; Z
let k 0
1 c: B$ ?' [* r0 S! B# Vlet new1 0
, l. q5 r9 N: ^while [k < people]
0 Y, K4 Y8 o  ~: b: {- e* T[
9 L; O4 r2 }" q+ n' X! Yset new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
# [8 n' K( H* eset k (k + 1)6 [$ a. E8 q: Z& l
]8 g. z/ G  O+ C
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
1 \2 v9 r( n( `& [- pset global-reputation-list (replace-item j global-reputation-list new)
8 r1 }; j9 ?  m) V5 Cset j (j + 1)
( J- y' w6 M- e, B, n; ?" t]
5 h; k: v* [0 f" F! ?6 B8 `end
! C7 X4 e4 g3 [; S- \$ a4 X7 {3 P6 Y$ P. {' }( B$ }
8 c# _# j5 S9 ^
7 Y. t; j* }6 @9 [1 Q3 d
to get-color
: ^% s8 j, `& g
+ q, t$ g" {( `% |) \( ~6 c1 ?set color blue
) u/ L, [- V  |: d3 l
end
6 u7 L: h) V& o3 a
  y% H2 Z; d- j$ [9 m# h+ Pto poll-class% f8 ]' J$ ?  O; K0 j9 ^6 V
end
& U/ b. i# \! H, {$ o' i
$ P! G( R7 s5 ?3 b" I! E* jto setup-plot1
: J/ L. B! X* k  v% x3 J/ p; U1 F/ A4 |3 v5 b
set-current-plot "Trends-of-Local-reputation"

$ `+ E2 g$ p: j" }( t" v8 ~$ G6 W" r+ M
set-plot-x-range 0 xmax

0 G2 R6 \' w3 `+ G, y3 m0 s7 {: o" v; X
set-plot-y-range 0.0 ymax

& ~) ?+ m. `# O  F* y+ F3 ^end2 W1 p5 v. t! B& ^* r

- k7 n9 l" z! s# Z* ~to setup-plot27 X- \1 E$ w7 z6 \

4 C1 n9 g" h5 Nset-current-plot "Trends-of-global-reputation"
( m* Q6 L+ u- z. m% N1 j: q* R

; m1 @8 {/ `( S) |# yset-plot-x-range 0 xmax
( ^8 s" h/ W6 Y: ~) o! H
) o# V- s4 t% i) X
set-plot-y-range 0.0 ymax

  p/ I1 Y  i! R. o, ]end; F. W: r3 z( Q! s3 E

: K4 @' p! Z8 t" qto setup-plot3
3 {( f, t' {( h( Z0 r+ ?8 ~$ p
0 J4 U9 R9 }: i$ K; w8 y# Uset-current-plot "Trends-of-credibility"
; @2 t7 T" ?& h( S

  Q7 o  D8 ~3 \- t2 }set-plot-x-range 0 xmax

  S' B; ]6 a: ?- F9 l* u
+ ^$ J: t7 S* M8 mset-plot-y-range 0.0 ymax
4 n8 l- H5 n' z" _# I7 H
end$ s1 l4 l+ F4 H; d0 F
& u4 u) ]  |$ u
to do-plots
5 [6 v3 C) ^& t# Z3 \8 rset-current-plot "Trends-of-Local-reputation"
/ `9 v1 \0 ]' h9 o( Oset-current-plot-pen "Honest service"  O  o7 k7 J* x$ H/ `4 h/ O# b
end
- e, w+ r- I& I* i; M$ u: u7 ~
[ 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.) v  _$ |, I0 W" {  y

: K) M- a# Z( M% d2 h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, 2026-4-4 02:29 , Processed in 0.027120 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