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[交流] 关于turtle的使用问题

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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:; |* j7 x) E1 ~( e4 Q/ ^0 R( M
to do-business
# t  m) i+ z7 k rt random 360
. W2 ]0 Z7 w, D% N fd 1
( n8 `. R. _9 Z- ~ ifelse(other turtles-here != nobody)[- R0 K( |3 ?' S
   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.
( r# }% I3 x% [+ j- s: ]1 N   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
( {7 b4 g: p3 M7 m- i   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer+ Y0 s0 t: n9 V6 U% r+ Z
   set [trade-record-one-len] of self length [trade-record-one] of self) q) J" E6 _. I+ Z2 F1 B  D) W
   set trade-record-current( list (timer) (random money-upper-limit))  v4 X7 ~$ A( t: d# K, x

0 b9 |; P$ G6 N7 Q* H问题的提示如下:
- Z2 _9 `  X. x
9 d7 N/ O2 q) g* _error while turtle 50 running OF in procedure DO-BUSINESS
0 _) I2 i7 h2 {+ C- R6 u  called by procedure GO
( D+ R) [" ]5 l7 }/ ^OF expected input to be a turtle agentset or turtle but got NOBODY instead.
1 ]* m3 a, K1 B  f, F! C5 v' ]
(halted running of go)$ d% \8 _0 B3 _0 g- ?2 U- H

8 C( W2 D5 }$ o) 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~~
( T+ L9 u# b8 m4 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.

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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. b) ]. x7 s; |' J7 C6 j
globals[. a2 `$ T) o+ v/ T- B; ~
xmax
# K% ~0 R! G9 N* s3 [0 N, pymax
8 j% U7 j7 l$ Z. }# r3 Kglobal-reputation-list
" Q4 x# V- D8 s& H% Z- K4 C* |& _: o) b& i, V$ ^2 n9 Y
;;
每一个turtle的全局声誉都存在此LIST
; n+ z, Z+ T. w6 B3 pcredibility-list! Q; o. P: G0 x/ k
;;
每一个turtle的评价可信度6 ]- W* @* w7 @" k1 y
honest-service
" f* r' D2 g, f+ A9 l0 x4 t8 {unhonest-service# J$ Q) n1 \, y2 s; w7 y
oscillation" r7 C$ n+ a2 v$ j& ]1 s  o
rand-dynamic! I/ G2 @/ z& u  A
]
6 T# {6 ]) A# N& O. _0 ^9 O; m1 Q: a4 D6 J% f2 P4 ]8 F
turtles-own[. Y4 M- }! |% g+ E
trade-record-all
- Z* e9 B% }* t7 S9 e;;a list of lists,
trade-record-one组成
. m* S8 ]6 ^& E7 Htrade-record-one; f4 j5 D! z4 S( O1 N4 m- |
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录/ v. x+ c% t0 J5 B  s) v; d
+ u. _( \" S  w, Z' 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]]1 b6 k; |3 G3 X, f3 T
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]: N* V3 l2 D; a- s& k0 M
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
1 i' d- y. E' i( _neighbor-total3 u% A# `3 u' y9 o. o* `1 y
;;
记录该turtle的邻居节点的数目
5 ~! j" ?/ S6 h8 }: G3 Ttrade-time1 q# \3 U6 z' r1 i( m
;;
当前发生交易的turtle的交易时间
* h& R* {( y4 S6 {appraise-give
- K" n7 C9 X; ?# D& E* y, b( K;;
当前发生交易时给出的评价
! l/ z) A" \1 i( w+ Q5 cappraise-receive; d4 {* A2 y+ `2 z1 `
;;
当前发生交易时收到的评价
% K, g* }7 Y; U4 t# ~, m" d9 E6 Qappraise-time  a  d1 K( L+ U, z) j* b1 }
;;
当前发生交易时的评价时间
3 i( ~  a, Z9 c1 }local-reputation-now;;此次交易后相对于对方turtle的局部声誉
" y2 Y8 D( N( C! [% |trade-times-total; n0 o8 C/ k' G6 y9 b
;;
与当前turtle的交易总次数
* `& d0 M) `4 i% `& O+ ftrade-money-total& Q9 @4 |9 s' X2 A: e
;;
与当前turtle的交易总金额
9 z# \/ N4 T  I" Dlocal-reputation% u% j" y' [& }" }
global-reputation6 v$ V1 [5 x6 a4 K( y3 T
credibility
  V/ `% P- i& G3 [;;
评价可信度,每次交易后都需要更新
% d+ u2 u: C, i+ J. D: ?& ^credibility-all9 F2 F7 o/ ~  I9 q. |) M; p
;;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
- X( n% g+ d. V0 E5 b/ n5 @: B; A  }3 \! s. R( [/ h2 p
;;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% d+ W9 s% {. G; D. E
credibility-one7 {" j& U+ B0 p# p- ^' J5 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people7 k' V, |, S9 J% T4 M/ e) Q
global-proportion
) v7 x- Y/ J# V) N0 P+ lcustomer+ K& l  x" A& a  o# J/ l
customer-no; t* W' `+ k7 p0 \0 _; J$ z
trust-ok! _$ B5 |6 l: S; y% E
trade-record-one-len;;trade-record-one的长度% [7 _5 H9 m! O
]
& `4 o1 h& |6 |4 x& t  n, Q. V$ m( s) I2 Y
;;setup procedure
$ N4 u5 _- f" w$ J3 ], P2 \$ H7 b  {/ C7 F1 x. \
to setup. D; m  `3 G1 q6 O2 m

1 U% i- p, b3 p& s4 Y  @ca
7 c; X) G! r/ P, Z. U, O9 O/ h

8 r' g9 |* |4 i; S8 \% U4 ?initialize-settings

) W$ o2 K1 p9 J. X( E* A
! m# ]6 [. S* e  l4 acrt people [setup-turtles]
, K$ _6 S8 J0 q! M# u) S
6 f2 h$ D" }; ?, M2 ]. k$ x" P
reset-timer

6 e8 c/ p  K( Y1 c
3 V+ N; j+ Q  I# y% C2 p$ Epoll-class
% C6 M2 Z" i% A" z8 G0 B6 L8 p  c
, _& J2 q9 S5 n
setup-plots

5 l/ `$ {; r& _
+ D' y: i' x, Zdo-plots

$ A& w9 H6 e  M9 I2 hend/ J; G6 A5 k4 h

! ?) A5 n9 Z1 @( u, Nto initialize-settings
8 \" V: [) u( B  ^) n' @
# u& F4 d) p* [set global-reputation-list []
/ E4 j. g6 S/ X* S6 O8 Y7 g  s
: X- Y# W7 o4 `: _3 j: L6 L
set credibility-list n-values people [0.5]

9 ?1 Z& r0 a1 J( j1 \' \# l- D9 e. ^: j, v) v; |5 F
set honest-service 0
# _6 U1 d. \, ^. ~# Z+ o  Z/ ~

# O! a  k9 k$ X: E1 Iset unhonest-service 0

( [/ x" R7 t& A: U0 t" |. ^5 ?* e- \6 w- L
set oscillation 0
+ B2 n4 Z$ v8 ]5 a
) q4 Z1 y' E+ @3 O% [
set rand-dynamic 0
, v* ^5 p$ w- A$ H/ S# ]
end
( J5 K8 Q: R2 D/ b# M$ C
+ j8 \/ k5 \2 ]8 _6 u# y' Hto setup-turtles 2 b- `3 M" H) S7 A% B/ C
set shape "person"# o+ }8 Q9 F; i: n+ y
setxy random-xcor random-ycor
# q& C, Y$ z' n; q# Z+ Oset trade-record-one []
+ g/ k7 m9 T9 y

" n5 x' {7 ?% e+ x3 X# i5 dset trade-record-all n-values people [(list (? + 1) 0 0)] 6 n: w2 k# S+ j" I4 R2 `

, h/ _4 y4 S9 Y, b( eset trade-record-current []
3 ?! s9 ~8 D) A) F0 q( G# tset credibility-receive []$ K. Q* V: u8 _$ e
set local-reputation 0.52 [1 D& k6 w( H6 F5 B
set neighbor-total 0
% l+ p$ O, f: g! m  U8 ^" Aset trade-times-total 0
( Q8 L# \( ?6 R, H4 ?' T' n. y+ jset trade-money-total 0
" l4 L7 o- \# y' O; a& x1 Yset customer nobody. ^8 Q% `' l) x3 ^
set credibility-all n-values people [creat-credibility]- I2 j* ^" z8 |
set credibility n-values people [-1]
1 v/ |/ K/ G$ {2 Cget-color
$ l7 W3 O5 c5 J" B2 F* [$ p

& G( @" T1 @+ @  Y! Lend0 L, s  j1 a$ I, D

$ ~$ J3 P0 }6 A5 e+ S1 E% |) l' B7 Zto-report creat-credibility) F6 X% L9 D- @1 [
report n-values people [0.5]
% T. `# k5 h1 I3 w- t; Aend
5 I; u5 v: R$ K1 Y7 `2 o; v8 ~2 [
: _3 p, v5 w; u. I& b2 w- {7 U; nto setup-plots
" _% L) G0 D5 {1 Y9 X% P, v6 k, j
# q* W0 W$ r/ {5 R" h. rset xmax 30
6 I3 K& v' J0 @3 G  U
  w8 A3 W0 K9 C" [3 |4 g; R
set ymax 1.0

4 P5 p/ {6 c0 T8 b/ D
+ X) d5 F% H0 ]& I" B. nclear-all-plots

  R+ B; X2 m: B6 B, F# J8 `% t2 ^$ V: d- {& E2 M2 k. F( Y# O
setup-plot1

! l0 z- w0 O( P; I; `1 Y
+ W/ x+ K. ?. U* H: [- q  X7 Osetup-plot2

# i! K  o" I; d4 b/ x: O, y6 m7 b4 S8 F8 L7 t. s1 h" j
setup-plot3
' M* t( v! `  }( V3 q$ _
end
0 }9 O& R3 C% W) h( s5 {5 J% ]- B6 g2 e1 T
;;run time procedures( {3 Y0 z! S6 Y6 O! _

5 J" f4 i" |; o. Lto go
& c" F) r1 h' q3 f8 L8 B
5 {# `* V5 c  Zask turtles [do-business]
! l8 A4 G+ P% Q: @; J7 k' A
end
, C& e% Y1 [/ I$ A0 C5 `: q7 O& M$ I
' W  R# E, }5 D- ~: eto do-business : h1 ^3 S) ~% r
0 i& U% A. @# g0 v4 A* V; b
$ n) |) ~# M2 Q* W8 S
rt random 360
1 B* r) G+ [* v! b
8 G: X1 S' k: h# `& W
fd 1
1 d) n& F0 j6 h

& a( U2 L$ s9 s$ U8 Bifelse(other turtles-here != nobody)[

" b+ r9 y  M, s1 x3 h% [1 h8 W" G  B+ `
set customer one-of other turtles-here

0 I: o" J4 t; |3 D8 W
: R  J3 k3 d4 J3 p;; set [customer] of customer myself

! e2 w( ~9 H* ?( t) @9 b3 Z9 K& o4 M, n$ ]- p9 d# M
set [trade-record-one] of self item (([who] of customer) - 1)! |2 l1 V' P9 c
[trade-record-all]of self
  g6 P9 @- @# R' `8 t9 ~! G2 Y;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

' }9 u) ^7 q( e/ N, E5 X- j1 J0 R/ o( u3 s% r8 ?
set [trade-record-one] of customer item (([who] of self) - 1): H) m. h8 ?$ W" v3 x( E' L
[trade-record-all]of customer
# n7 C9 j  E9 u8 u3 p9 E8 W
8 f! v9 B1 j) l1 J# T( R* m. [
set [trade-record-one-len] of self length [trade-record-one] of self
  }$ v. Y$ F  S2 s( X% G$ L

1 V7 _( p% j6 p# O; gset trade-record-current( list (timer) (random money-upper-limit))

" I/ _' g) W4 Q2 l  l, F' ~2 d# q5 F
ask self [do-trust]% }6 M( x$ t! x  t. h: V
;;
先求ij的信任度
% O- k; _# o8 w) w; Z5 Y! V' R* V' s2 B
if ([trust-ok] of self)
4 d) j: L, ]* {8 ?4 [6 o0 z;;
根据ij的信任度来决定是否与j进行交易[
; s: i, }& r0 c8 sask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself) ~% `5 m- h2 {" Z2 D

5 s6 L3 n: S. H/ o, B  v[
0 O7 V1 G& w5 |1 `: V4 _' o& T
% d1 W7 L' }3 H2 g
do-trade
: B' }$ Q3 L/ R" g9 Y- n. w

2 B, f9 ]# U: f3 n6 b) J1 P( gupdate-credibility-ijl

) K+ ?5 W+ P2 g4 v* B, w( C3 p! V# g# Z, x
update-credibility-list0 ?. T- \5 ^, m# S
/ r, s* R& H  x

& W4 R2 q! o/ |: jupdate-global-reputation-list

) |" F% r1 ?) [& O9 }) |0 q8 O. }8 E, r5 O1 p& @
poll-class
% w  X5 m5 a1 ~! y) `8 r2 ~
6 j2 p  Q; k  `' @+ ]1 d0 |
get-color

3 B- _3 J. Y9 @. S" K5 H
  q  Y2 d" d$ q( D]]$ X4 {( H8 ?8 N. h5 @
/ v) P6 m7 F' x% n( V; Y8 w
;;
如果所得的信任度满足条件,则进行交易; e/ _# C8 H' B, F
6 _) b# z/ k3 f' f
[
8 X; d' I. b2 o& D, S/ A. Y
9 e  S/ J( J, V3 P
rt random 360
; N0 O( P* K- y4 a9 I
' X# t$ z! W: d( e2 j/ E( o
fd 1

* P8 ?2 s; X+ S
: e  j9 {( h# g8 g5 O, U]

5 t2 h! J& b7 Y. B( A
4 }) e' B/ g" C4 Zend
% e5 Q& Z% q; t' \8 B

  R. m4 c4 t; q' _6 v5 q; Rto do-trust % s; U8 T* S% g2 t  y6 p
set trust-ok False9 }. d# I' T. f  Z& C
, z. ]& c: D" S( o. G

) K5 [9 ^& u$ J5 s  a) Olet max-trade-times 0
$ G( d+ c: S% t/ aforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]5 U$ t, z6 C3 j. {- S
let max-trade-money 0
( ^5 k5 _- H$ P/ _3 h& _foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
- ^  k5 Y+ ?, hlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))  B; h0 T9 \$ _* z* c  v8 ]! r& D. B

+ `1 a  t" B- r( j
( [2 Q% t' x1 t% E: g6 D/ |
get-global-proportion
) h+ [. q3 K- s3 Llet trust-value0 O# q, }7 J: e( r3 [$ o2 n9 p
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)

5 T; W( t: E: o2 i' |, i% Cif(trust-value > trade-trust-value)
, l0 S0 O9 m1 a) P[set trust-ok true]9 g% p+ L/ g4 V: v' s$ h- Q  J
end
. V" v" T- D- h) {3 O3 m; Z) C5 H$ _( W
to get-global-proportion+ T& [5 K) ]( Q. P/ g) f  y! L
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
  V) _# F( D6 r& H- v) A& y[set global-proportion 0]
% p, y' r% p/ t' i* V  p) h! n, [[let i 0
/ Z- j+ g. h% _, elet sum-money 0
. W& s' D% N' g" ewhile[ i < people]
0 M$ i( v/ F5 e[
. ^7 p8 ]2 v3 d$ o; X) u7 |9 V2 n+ Bif( length (item i/ H; d+ _: {* M$ n
[trade-record-all] of customer) > 3 )

/ z& S6 \1 m& h  r0 i7 e8 L6 m[
6 s, ?% _. Y2 ^( R$ Rset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
& P( D6 t$ @0 {, O2 @  j]- }$ m4 F$ Y; ~8 P
]8 v+ N; W7 A2 d' s8 _
let j 0
# L! m1 O( s; s$ plet note 0
; f* X# R, T0 [7 [. c* dwhile[ j < people]
: A3 o" B  N2 [1 ?" I8 v  T* |[
) F: Q8 a9 e  T( o; B5 Nif( length (item i' c' a+ r5 i/ F' I; D
[trade-record-all] of customer) > 3 )

9 j( X7 ]8 `9 I/ \$ l[
! t7 X) _) g% q+ b: B3 Aifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)! A9 p3 a$ o. o6 b; K8 }
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# O3 _6 m3 a, |, d( i0 V* x/ `, `[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]) o" p( r! ^4 @: O& q
]
' C' J! }3 x, b2 O% |" A]
& T' W) \3 \' n; ?7 X6 {% Mset global-proportion note
4 D7 C8 m8 ?9 O' X]
2 K2 J$ _0 Y2 k& A, zend- H3 M: b! u) H) N

& b2 J' \) z+ ?8 s1 pto do-trade
: _- O/ J& c, a7 l;;
这个过程实际上是给双方作出评价的过程; v; j/ A) t" e& J1 U8 o. F8 @
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价) }, e$ U8 H0 {
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价' d3 B$ }6 T1 J( S1 j8 h& [  y6 {# T
set trade-record-current lput(timer) trade-record-current
7 o  F& X( s, R; k9 J% q2 i1 };;
评价时间) ?9 y7 p: I7 x0 n' m, \
ask myself [  P3 m# v- i' N$ ^
update-local-reputation7 Z% G9 `% v  k( l$ a! L* [
set trade-record-current lput([local-reputation] of myself) trade-record-current
! e* ~2 ]4 c% A6 q]- F% s9 c( N, ?6 b" F( p, ^6 h
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
9 I) u( x- e/ a4 y, |;;
将此次交易的记录加入到trade-record-one/ {& h5 H- Y4 \$ v
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)0 a; K$ t0 r: Q! F: J! Y
let note (item 2 trade-record-current )
$ k: D9 W7 M4 N2 Z/ q9 J( Qset trade-record-current
5 {9 R, Z" U; n(replace-item 2 trade-record-current (item 3 trade-record-current))

/ b- [3 N) ^  \6 U% d4 B! _  k' |set trade-record-current" c/ y6 O2 a* z1 n
(replace-item 3 trade-record-current note)% T4 d: t; ~/ p1 [4 S

& }3 q0 {' f( P3 P2 b

/ _1 Q" Y8 B2 e! {ask customer [4 f$ E9 x' a, B, j3 G, d/ }. h: n
update-local-reputation" l* R" y# o, s3 Z
set trade-record-current
# d. `7 r) W3 S' ^(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
( K  G* a* z5 r7 O. D
]* h+ |0 Q/ i( W" R' Z
7 ?" y# K- G- o; ^5 D: E

5 \0 L% Y% k7 b0 rset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
4 ?) ^2 @2 ]# f  r4 o* ]' @
* z& [: x+ x8 z, K9 g! Q
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))+ X# r. C, S2 I, u9 I
;;
将此次交易的记录加入到customertrade-record-all
; E+ P; [2 F3 O9 g0 xend
  d1 ^: S$ O9 R7 Z7 K6 l5 y5 a; r. t8 Y& I+ k
to update-local-reputation
# Q3 f- D3 U( Z% oset [trade-record-one-len] of myself length [trade-record-one] of myself; o3 u! F: b) @! r# c8 e

% O4 w3 K* V( t% ^; o# }  W' t# ]8 `: D0 k
;;if [trade-record-one-len] of myself > 3

: k+ T. z5 Q; D; K0 O) oupdate-neighbor-total+ {" b- r' d: X2 ~. X
;;
更新邻居节点的数目,在此进行  x' R* w' A9 P
let i 3
( f4 f- Y2 y/ slet sum-time 0" [- p, [/ g3 v' [. r* J
while[i < [trade-record-one-len] of myself]3 e8 ?, \) G9 X2 r9 l5 w
[% k: U: x1 \" m$ ~- k  N
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ). U( J; _) \3 s2 K7 e- b
set i- J0 h. `1 m" H% b
( i + 1)
" {6 J: A+ g  V& P& O' l- \' w
]6 f1 M9 o2 ^$ ^8 ?; H7 U
let j 3
+ m5 z7 |* J8 @1 n2 \let sum-money 0/ G5 F, k1 M; y  N* w) O! c
while[j < [trade-record-one-len] of myself]
5 h+ \3 L# p) O0 G0 M2 B% [[
7 r! v7 Q# o# p' X, 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)
  R- l; y3 _! K: w0 H% h& g/ |2 Fset j  {, G' ^* w+ q- ?+ k
( j + 1)

) ]8 x8 r7 R$ \6 L' S. }, @0 H]
' B2 i7 ~6 M  O* tlet k 3
! F' w! N; j5 j7 y3 t$ B- ?let power 0( p5 T9 x. ^) m  Y
let local 01 ]' S' F) e6 x  E6 G
while [k <[trade-record-one-len] of myself]
* u: H9 u  |! r0 _[
7 P* @1 g+ h% y- U5 Y  p, d3 aset 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) . W; M% K8 y3 B2 G6 o" I/ y5 z' s0 c
set k (k + 1)
. a3 \4 H' O0 M4 w]6 y! C* |1 i1 m1 C8 w( k* W- X: ]
set [local-reputation] of myself (local)1 m+ v: S- L8 h9 x( n' y
end
7 t( R$ A& ~( X: `
0 K3 @7 d0 Y, {3 I# B7 `0 o( [0 eto update-neighbor-total
% }$ @2 r7 l" z( e
( F4 B( d* }- D0 b4 v' y- F$ {if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]! B% ], J* R# x3 D/ Z" ^' G

) T- x' J0 o$ A6 i3 g1 k0 v4 f
. s/ p+ ^0 n( ]
end
" X# I7 k) P3 J; i& S; _8 r! R( h  `/ M
to update-credibility-ijl " k  c8 T& {; I9 l1 x! L8 z% h3 ^
. N" J* `7 @) e8 V8 K9 P
;;
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 g4 J* `7 z7 T7 K: D" Qlet l 0( t7 D" a4 J' G
while[ l < people ]
: T' q: c/ P* E: j% d1 I;;
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6 f: X+ B7 h  c3 m
[  o1 x0 L5 G& n$ U6 ~. b+ ?! l
let trade-record-one-j-l-len length item l ([trade-record-all] of customer), a: R6 G2 I$ W+ i  V( y, q/ Z
if (trade-record-one-j-l-len > 3)
/ P) g2 a7 G% E- P! c/ 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-one
: w" R; B( }. v. M3 ilet i 3
8 k6 M/ W$ O) jlet sum-time 00 f% w* ?+ ?; d3 `, N7 i
while[i < trade-record-one-len]
2 |* h$ ]4 \3 B3 g/ {& z[
  E) c5 q0 \1 s8 q4 B# q0 ?set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ), R! N1 t/ I  v3 w2 \3 d/ ]
set i
2 R( c$ o3 g7 a- o* a' ?7 k" E( i; Z2 J( i + 1)
; x4 n) l, U8 r0 q& z$ `
]! A8 m4 b6 Y% R/ j6 q
let credibility-i-j-l 0
( f5 o$ T, Q+ `( w2 [  Q. x2 ?;;i
评价(jjl的评价)3 \5 s/ i5 Z  I: j$ J
let j 3
3 s7 K! F# K, g+ {! ]( o9 mlet k 4$ |! Q- G. N& B2 c7 q* _
while[j < trade-record-one-len]4 G7 J( ]- ~& X4 E' I, f4 k: U3 u
[
* C/ u: A7 ~" \9 E' owhile [((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
8 P4 D; D! g* l+ X6 Wset 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)# E4 u7 ^  R- b0 G; T8 w8 ?
set j
  d6 F) p8 I3 Y, {" Y: g( j + 1)

" S1 z. Z! W: P3 l$ s]7 {# |! e( y% e, M
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 ))# j0 A% K9 p+ Y  y

$ n% X0 A* }3 v! b9 Z9 M

5 z( w" r6 Q3 {& n9 h2 Dlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
6 S1 ^3 I0 d# ?' ~" \, r;;
及时更新il的评价质量的评价
' K2 ]0 S8 {7 e% Fset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]! ]% H# I( [- `7 Y0 G0 y: R: t1 Z( c
set l (l + 1)' d. c, h7 L7 n+ h. @  @0 C# }
]& R6 I7 M1 w# _5 {: d( @
end
, a" x4 }/ k; F/ q) n
% s) L$ ^: e+ Bto update-credibility-list) o$ y; `4 B% N
let i 0
9 d6 W" v# Z. N# a. }, v9 ^; Uwhile[i < people]2 h/ ~' T4 m: W
[
0 `/ C5 J% R, O# z$ @) u! Slet j 05 e% T, g5 F. x: W
let note 07 ~' K) ]- L% L$ q( ^4 P* q/ c) ]
let k 0
8 ~0 ~% ]  I( \7 Q/ A;;
计作出过评价的邻居节点的数目
+ i: q/ _: K9 R- }while[j < people]1 V& o6 Q8 T1 ]7 c- e$ |7 m
[
+ }9 U' P+ U' ^$ Sif (item j( [credibility] of turtle (i + 1)) != -1). F6 H" \- W* C6 H" Z9 o
;;
判断是否给本turtle的评价质量做出过评价的节点
* r0 t8 Z2 A( E# D6 o[set note (note + item j ([credibility]of turtle (i + 1)))
3 \# g/ o' h% x/ U: R;;*(exp (-(people - 2)))/(people - 2))]

. B! d/ `5 z# O# X6 oset k (k + 1)1 l/ S0 \+ I' ?7 }/ _% Z8 h
]- B* V# a/ W0 E& \. X( J/ B* }
set j (j + 1)
) G  w5 Z6 [$ j( @) y' E8 f]
  y! Q# s9 y9 N# k+ p7 Sset note (note *(exp (- (1 / k)))/ k)% ?! X; T8 i+ H1 ]( T/ v
set credibility-list (replace-item i credibility-list note)" C; }2 K2 n( r" i2 [
set i (i + 1)
  x2 R1 O' `+ q# \]! n! ]; V* x, m8 w5 L
end
3 a2 }8 z, l7 T8 T1 T# c, y
# L: U8 m. `5 u: D: gto update-global-reputation-list* _8 U! H+ c7 e, z5 `- d
let j 0
# E3 X8 H) d4 [while[j < people]$ S2 b" H4 n6 c9 m7 \; P& l3 I% g  }
[9 r& O# L, C0 x  L
let new 0! |) b+ w& C$ p6 T1 @
;;
暂存新的一个全局声誉$ |) [* g" s' y8 |" {2 l
let i 0) i. E0 E5 c% X7 U" [0 ~- `
let sum-money 0
% @% l  B$ h( x! v! P0 W* O+ X3 llet credibility-money 0% _2 W# S8 w6 |
while [i < people]7 S; p/ `: r8 P5 {" K2 X  b; q  b% C5 i
[% C7 v; r( x$ C3 a+ I8 L2 P
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))5 B2 ]- P! Y! W2 I/ w
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))- y7 d+ d5 r9 `! I; |! M  n6 Y
set i (i + 1)6 @, }8 y/ z" p4 ^2 j' T6 e9 ~
]
$ T: R3 F4 b7 C/ {+ u$ z8 M9 ulet k 0; g, q1 U9 r. b& ^
let new1 0
5 g8 h& N4 x6 M" y2 X% Vwhile [k < people]7 n+ I9 J* g& K9 O: H
[
! {' n6 ~# L! L, o6 J1 l! ?7 D3 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)3 D+ F5 [! }) l) K0 B: f1 b
set k (k + 1)
5 w: A& W$ _9 f. z9 T]; e2 f+ n7 u# K: I9 d' \* f
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
/ a6 z! ^  h9 h: E2 b( Z4 X8 Sset global-reputation-list (replace-item j global-reputation-list new)
9 s) f% {) W* u# J9 v6 {( Nset j (j + 1)
$ j6 s1 G/ G! `- b: I]
5 Q) H3 o' b4 B; B4 O. jend
4 k/ Z& `7 i* k) \# f6 h! V5 m& l3 {$ f5 v6 j! Z5 I# n7 w
& M: N5 {7 W7 U
3 r, c) J( F; e# J; w* h& t# O
to get-color' F2 b: H' a# @8 z

, h2 [! ~6 h( vset color blue

7 m- M/ o* i+ |  [/ \end
& u$ P& E) }: \% T5 f% d( e/ W) ?( T- K1 v$ y4 ~
to poll-class
- T# u! \4 I; ^/ g7 N; vend
9 q( L9 X& m* x) ?2 m. y9 W8 \: s
! r) ]8 h- ]- S1 {, E/ Bto setup-plot1- z9 e5 a7 t/ ^3 E  t! a' q

* Q1 D" J% _) c0 o4 t. gset-current-plot "Trends-of-Local-reputation"

" U* x' C* a. b7 z3 M+ D" n$ |. ^' G7 i6 S0 g& ^2 h
set-plot-x-range 0 xmax
5 a# J8 b/ X/ a& n

* W1 N8 n6 Z9 vset-plot-y-range 0.0 ymax
9 N/ S& j( k6 L* D% l3 S) }
end
* ?2 j: ~3 a% T! q/ j* J
( C% ~: [2 e# f* ]# s( q6 z5 O7 Qto setup-plot2
& r7 u  @; Z/ i5 ?
! f  d* R' S# m/ x; |9 J: e6 A& Nset-current-plot "Trends-of-global-reputation"

: [# {  s$ u, m& o9 v$ s7 T
5 U, d; g2 f+ ^$ w6 Aset-plot-x-range 0 xmax
2 i& [! B3 Z! P; z2 Y% a

% O0 e1 u7 h3 U" S' Iset-plot-y-range 0.0 ymax

* W0 ^- A; X6 kend
* Y+ S: V$ K# Y. J) i5 v# x5 ?" j; f$ j5 c8 |1 ^5 K# n
to setup-plot3
" v# K( p& {( C
& U% x' @& _0 [5 Gset-current-plot "Trends-of-credibility"
& A' U- [: ^4 \3 l

& ^$ V. ?) W, Cset-plot-x-range 0 xmax
% b/ G0 ^% Y+ Y4 m

$ z8 P: `3 c$ A& C. V: Y* Oset-plot-y-range 0.0 ymax
" B: `$ V1 n2 [* e3 M
end( n1 ?' K0 O. z2 L! [& Q# \, L; o
6 S: S; T; v: ]9 Z
to do-plots* C. H% L, {! [  k
set-current-plot "Trends-of-Local-reputation"6 o7 @& ~  i  E
set-current-plot-pen "Honest service"! B* Y; t2 ~) @5 ?# _5 {
end  D+ }" `. j" p( s$ r' Z  t

% w) g: i% Q9 X: g' ]5 o# K[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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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.2 w  C  ^& x, O% ?0 I( B6 `- G

% W' b: ]4 x3 |3 Q5 s$ L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?
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