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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:& z' ?( W6 z6 Q, d. c2 H) @
to do-business
- L5 s/ m! A; b# g4 w' @ rt random 360# S# _" X' c0 c' ]/ T) K/ f
fd 1& o& F2 Y! e2 k2 z1 E$ ~! }
ifelse(other turtles-here != nobody)[9 J% {' v3 p, z8 S, `7 g
   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.* k7 _* v( y# d: }8 {
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    9 F* J! k( d7 }7 f2 J4 F( _; C* ~0 q
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
- F' K2 V5 a! F" E5 E+ q   set [trade-record-one-len] of self length [trade-record-one] of self
: D# b# y) b. W3 Q+ I# [& W+ x   set trade-record-current( list (timer) (random money-upper-limit))3 O7 I% n/ k: ]) [" Z2 U: I

4 i2 {$ g8 T: g6 N- e5 F问题的提示如下:
% f% D. h. G" K- p1 n/ U
% g" y: `+ n- [: y# _4 eerror while turtle 50 running OF in procedure DO-BUSINESS0 ~7 d! w1 }' q! j! c
  called by procedure GO$ B8 k  ]7 x; b# C* J
OF expected input to be a turtle agentset or turtle but got NOBODY instead.; ]6 |6 x/ m% S& y
(halted running of go)
3 g) K. J6 L9 t! ^
& _% c/ @$ f# x& 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~~
: P7 r. m1 _" n0 [: d' h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
9 F  a$ N+ ?4 \, }7 x( ~globals[
! h. d+ c, A& U" Wxmax
# p  ~# K; n" {( @/ h2 G. ^% Rymax
5 U, }( [6 g" g1 E  ]- U( A6 f  Bglobal-reputation-list
! I+ k4 E) {/ k3 g1 U" y
: o4 I0 I- ~) M. B& r$ [5 v8 L;;
每一个turtle的全局声誉都存在此LIST
; h* i$ a1 A6 k0 [# f, A5 Vcredibility-list
+ @8 B9 N& _( p0 k;;
每一个turtle的评价可信度' {! \+ c2 n0 I) p: q6 E1 K
honest-service9 J+ M7 w0 g/ I6 R6 d- m$ `
unhonest-service9 p1 T' [+ ]  {" y
oscillation, ~) l2 i4 n  _8 ?4 N6 s# r5 ?/ x
rand-dynamic
$ G) o# y5 T; q]
% C3 ^3 |/ |( F0 [
. E+ e+ ^' r( K7 T6 Uturtles-own[4 ~! R; R" L- t1 }* s
trade-record-all3 t9 X" v0 o; m7 ]: A3 V
;;a list of lists,
trade-record-one组成1 k7 Z! b$ K( S3 F) }
trade-record-one9 g2 x2 V7 e  v" T9 f& A
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录% U  R% y: R1 ?7 c
5 k5 G: l# c: Z. N: J
;;[
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]]2 \  R6 \" |' V/ k% ?+ G
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]8 U) S# \9 z: H( H
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) [  }! q* L4 C. P$ [: M9 J
neighbor-total' v0 h7 M; S+ E1 `( X+ t/ o) W
;;
记录该turtle的邻居节点的数目8 r' e& d+ C" M; s
trade-time% D1 I2 E! b3 |
;;
当前发生交易的turtle的交易时间9 j. _3 f# _6 U6 G0 ]3 w
appraise-give& q5 J0 @  h/ w
;;
当前发生交易时给出的评价; S' o5 }0 r+ d# s3 {- @2 |
appraise-receive
- T7 |; |) o0 a1 G9 O;;
当前发生交易时收到的评价
" B4 ?# Z* R8 H& e: x" Eappraise-time# {/ H  j  h- z0 Y
;;
当前发生交易时的评价时间
& P0 n  @* Y! s9 B- s6 X9 Flocal-reputation-now;;此次交易后相对于对方turtle的局部声誉3 R+ Z2 u( O1 s' `
trade-times-total
$ m6 F' E" d) s; Y# [: E9 R9 m$ c;;
与当前turtle的交易总次数/ |9 N9 U* s/ G; q2 X
trade-money-total2 M( X2 ^/ ~5 ?' L' P3 n$ Z
;;
与当前turtle的交易总金额5 y6 B0 D$ W$ x+ Q
local-reputation8 y3 b: `  J8 _, `+ w6 A! s3 Q
global-reputation8 z/ b7 h2 ?- `6 `5 d0 R: X1 C
credibility
- g" _+ M6 x5 r+ d" k- G;;
评价可信度,每次交易后都需要更新
, u6 p+ U' f8 Q/ z' [credibility-all
% M6 U' H+ W9 h8 b: 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
1 b6 m  c  X8 @& a9 F7 M. {) b
;;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
/ L/ \( G$ |2 W# ?- fcredibility-one* W- m& ?) D* c. ~8 H/ U- s
;;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  }' |. {4 g& E" Z( i( s3 E6 Y
global-proportion
% U4 F2 N2 \* w1 `6 s, ^) b$ pcustomer3 y/ y2 G/ t6 y. {0 G
customer-no
" n( A) M$ u) h/ W. m9 Z- strust-ok
( f- Y# d# b/ B6 A+ f" g& A0 [trade-record-one-len;;trade-record-one的长度
- _1 b: f$ f2 C* a6 \3 g]
: d- a" ]. c6 G
7 m# u# p+ z6 P  d+ D# X;;setup procedure! K# U( g7 H2 k1 m7 j. x' A5 r

7 m4 L# v9 C4 w# L" a9 F$ vto setup$ {% ~* c" _. Q2 b# g# @% m

. I* J8 Z. e' F4 Hca

! s3 C3 b' @+ e* _1 b" q8 o1 x
9 P( n# o4 ^% V5 {8 v  minitialize-settings
" l2 u5 D7 h8 j: n% C) R& i2 j
7 [1 c' m& F* t
crt people [setup-turtles]
& z" l0 U! u9 X+ G' H6 c5 V

6 G+ i( n$ h9 w: Dreset-timer
% _, Y+ m6 D' o; b

) u. m* E. p4 w! R# a4 V, kpoll-class
9 w) w  p* s( p  d) F
6 ^5 H2 s& x" S; f( q+ e) O
setup-plots

! ~4 _1 p# Z. _: n) C9 a$ d* O; ~& c1 \, C' R8 `# r, d: S# c* M
do-plots
& n/ X6 l2 b5 j$ p# D
end
7 p# Y3 w. f* i4 ~, J6 k( Q. s+ E& \* N1 E- M
to initialize-settings
8 M& j. v7 T0 v! l4 x; g) ~# v- W1 C
set global-reputation-list []
2 O5 H) _+ `0 P+ I

' T( w* \) d* z( a, P* R9 aset credibility-list n-values people [0.5]
' D! b; H8 e3 A+ X

% y+ O8 q) ]2 f% M; y6 Cset honest-service 0
, l& J& a1 ?- B5 H) ]

: h+ A" Z& G8 Q$ j9 aset unhonest-service 0

7 W: R( D+ @% B& I7 g6 l* i
* `+ d1 U" u) E- F6 d( ?set oscillation 0
! [) V9 X* Q0 x9 ]

1 q! V, H9 ^% i* z1 eset rand-dynamic 0
# b6 m+ ^2 b& z5 X  y/ O! f
end
& P- _2 I, _$ W4 b* W0 \
# c8 E: H- k2 m( \6 [' d+ F1 lto setup-turtles 6 [' h% {( I+ ]/ [
set shape "person"
& c( C+ a* Z- [: y3 L; [, }setxy random-xcor random-ycor8 z3 [6 _( y. u4 L9 h3 o
set trade-record-one []5 W2 l, s! D% l* m. h4 ?( J8 Z( y

$ l7 V7 v/ O! I* yset trade-record-all n-values people [(list (? + 1) 0 0)]
7 \4 u, [% I& W
5 h& y$ ~$ G& s
set trade-record-current []
5 t% b- l8 e5 q# Q  V$ ]set credibility-receive []
9 q% \- q% g, Y3 rset local-reputation 0.5
8 _0 i( J! ]  F- t* ]1 @set neighbor-total 02 v2 D7 s1 c& ]% ?5 _1 X* X
set trade-times-total 0
! j: q  L, S' l) I9 X3 A/ Nset trade-money-total 0
/ P" i1 a, O- Jset customer nobody8 B. h( I8 C6 u1 f
set credibility-all n-values people [creat-credibility]
+ Y4 M: D; D2 a, }' {set credibility n-values people [-1]
$ X- ?" W# U9 y' _+ Bget-color
, z, P& e' t7 }& B. F
$ @: B. }* Y& y+ j" Q0 c
end& T: Q: {0 ^8 |/ b- X

5 V6 h6 O% R8 W7 X! Lto-report creat-credibility& J0 F' T. X7 D
report n-values people [0.5]/ s3 `- V9 Q  s7 L
end0 w# t) F/ ]3 q

. K$ G/ N) E* oto setup-plots
3 l( W8 P! b% l" Z( x; ?  z2 _% N& ]% z
set xmax 30
' [/ C! r) A0 l) ^$ B) E
, H2 `' h. E$ Y8 N% o& E
set ymax 1.0
6 X( m( O( i' F3 P

+ y- a9 O, X2 ~4 lclear-all-plots

7 x& V0 p3 i3 q* l, F$ c! R7 o$ P5 V- ~0 _
setup-plot1

+ g! h5 o+ b* b) o* B% }7 p
1 V  m* M# _3 {4 E$ R. \setup-plot2

. M0 H. j$ m$ ~# h6 o
, G7 C# z, {6 F  h" `setup-plot3
5 L. `0 a3 R) P& \* K3 X
end  m7 i9 c' ?' J  x9 k, j3 N$ Q
( R/ k0 h, h' R2 M2 ]/ w
;;run time procedures
/ F6 d, T3 l4 Y, C% X6 B" `% r3 D5 P6 E
to go8 Y) z0 a" C2 C7 {* v5 i

8 K2 R9 L# N1 {4 `% e# zask turtles [do-business]
; V# ^. y7 c1 q' l7 V( X
end
. @) J$ G1 y9 ^$ w+ G% o; U7 L* d  I0 {! @. V+ t; s6 x
to do-business
6 |) D4 _  }2 m' x, g: R! Q4 I1 C& ^

' }: }; U) ?7 `+ _# K3 i' W! ~  K  w1 |1 N8 _$ o
rt random 360

- U" W- c6 v. @- \9 G6 A! c- k- S/ g& G/ O
fd 1
7 j: l: i7 K! l& R7 x
* P* q) T& R0 q3 @" P
ifelse(other turtles-here != nobody)[
" W1 W3 @8 W; T1 z) ]: |5 H' f4 b

; F" X9 M, \1 c# t7 eset customer one-of other turtles-here

/ @0 M) B+ e6 ~0 F2 Z" h
8 {+ Q% f3 F' w5 c/ t: a;; set [customer] of customer myself
3 G* I$ v6 s4 }. X4 ^0 `( P

$ g0 j* C8 h0 C5 c! Mset [trade-record-one] of self item (([who] of customer) - 1)
7 I' [5 l5 x4 P4 O[trade-record-all]of self% }3 @: m( s, ^' m& a, i, U
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
4 n$ M) r1 i" H1 _. h8 W

" b+ j1 S3 c) |9 I- q. Iset [trade-record-one] of customer item (([who] of self) - 1)
* l3 i( M3 q* w4 d& @4 {[trade-record-all]of customer
( @' W6 s8 G+ B+ ]; N
/ U8 s" Q9 e$ O( d  R, K
set [trade-record-one-len] of self length [trade-record-one] of self
* W. R' s' C% M- N) I5 P! s9 E/ B

8 U' J5 T8 _% \1 Hset trade-record-current( list (timer) (random money-upper-limit))

6 _# p3 |: v8 F/ I9 T" o8 O
9 \0 c# @0 j/ k; Lask self [do-trust]5 I' F6 B- T3 Z" K  \
;;
先求ij的信任度! Z$ [  j6 a3 }* |* i- m. u6 f- \
- h6 [1 {2 a) S, g9 `$ J
if ([trust-ok] of self)$ }  I! y3 q! P% ~% H  a
;;
根据ij的信任度来决定是否与j进行交易[
& _' g6 S8 `$ q, Xask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
  ^. ?1 g* m8 E2 l, \/ N
! K; W  m5 |( y' ^8 m7 q  w# G[

( @! k0 P  x- b! _% X8 C1 h) N2 G5 \3 ]  [; H
do-trade
" Z+ D: b0 d4 A

* H: Q8 m) Z7 I' bupdate-credibility-ijl
- O0 e+ J1 m2 E& t6 ^7 E" y

0 ]1 G0 r1 J; M! g1 Tupdate-credibility-list& a7 @) s9 P2 @; b. w( S

) _( I) E4 I0 z# B3 A" x" a# z; \: D/ E" g3 m
update-global-reputation-list

9 O( L3 N3 \6 E4 K# I# u9 y: U6 x. a  A
poll-class

! u. X+ n" l1 @% h' z, h3 p
$ _) _. c5 [1 e' c1 Oget-color

8 o( u% F& z$ w2 r7 ]- o3 [7 {6 K/ r! Q- a  E
]]9 C* r  O" q3 Z/ |

+ ~! o! d' z; R+ N9 i8 H;;
如果所得的信任度满足条件,则进行交易
3 }: I5 g4 H0 C, z
4 ~" T( a5 n  [8 b[

7 r3 b% r& r- X: _1 z( ]! e3 e$ N, h* U$ s/ S+ b! z
rt random 360
9 N" z. Z8 _6 y6 R, h  E9 ~

) O) K1 q9 `$ [0 P( l/ mfd 1
+ T2 ~* Z1 M: M; {, w$ t

* |/ ]$ F0 b: E% b  Q% i]

! h" K0 `0 E# e" H! Z4 L% F& R0 A; v" D! \+ Z- t
end
" Q7 w' \. `# n
# g: K. i3 S& {. L0 D( `$ P4 c0 z
to do-trust 3 ^" z, S, _2 W& z, f
set trust-ok False
7 G/ i) k$ k3 @, _2 O8 L/ p0 R/ x/ r: ?8 n+ E" e
5 m% |# w; t5 e4 T$ Z  N
let max-trade-times 0& I. u+ E) ]3 I5 ^: K
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
3 t+ M  \1 A. j" b  }2 Flet max-trade-money 0
* z; C$ _5 h: }' j0 T9 y* a2 yforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
9 e& ?. S) [, ]& `let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))4 D& i0 s( T. H' q3 y. k3 c# u  M
/ I/ U$ q6 r3 {8 E* A4 T5 n
/ h% j# Z! ~" W" Q1 ~
get-global-proportion
$ U3 P$ W) b+ G1 e) E" V  D' V( W% slet trust-value
' v7 K4 y+ b( d/ u1 Clocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

: p% U9 B) X! u9 I4 W/ _; Fif(trust-value > trade-trust-value)
; C0 {6 u6 X# d2 {( K: D  C[set trust-ok true], {: L+ k, v% \6 j
end
% F% c( x3 {9 u' L4 b9 G/ q) F& ]6 d- N) L  R8 E) \) E
to get-global-proportion) {9 A" X& Q8 [, A1 J4 w
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)3 z: t- f) Z) N2 J( X# Z& j
[set global-proportion 0]; }$ U. U# r1 ]+ y
[let i 0
( X: s# I. W( H( I0 V$ Llet sum-money 09 E5 Y3 M% a2 z) G# b
while[ i < people]
1 V% W3 v! ^9 ?  N3 u[2 f# C! N3 w$ p+ A& K* O; s
if( length (item i
6 z1 H, W7 k8 q; h* d0 ~7 n[trade-record-all] of customer) > 3 )

& N) b5 ]4 N, x[
% p! `  G  U6 [: P" N$ Y  f( ?! Dset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
3 n. z7 A8 t& s/ q( G]
+ n5 w: e. C" @4 Q( {5 P. @], u8 I# x) I  }& G$ u6 U
let j 0
& c1 \  [/ }' J. q$ D$ clet note 0; t6 g  W( M6 m5 }
while[ j < people]
  |# D9 m; ^4 `[# l. S9 G$ @  i0 M9 h8 K% {: z
if( length (item i8 D* y0 W7 d( g/ `
[trade-record-all] of customer) > 3 )
1 c4 G! u5 [. f( o! V8 B; C' Q! r# h
[7 J( J2 e5 }0 E! v& J! |
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
, I( S7 y) x( w( Z[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
4 G, g/ t: h9 |6 D& v[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]) v! F, o: e: ^( G1 T/ m0 v
]
# h0 T% c& Z% U% i" Z7 N2 a]
: E2 c; C+ }. u4 j0 Rset global-proportion note
* v, b) V2 F" ^5 Z- _1 }! }]' j0 j3 I9 G# W  W4 ^& B
end
, A1 F, \# U$ [+ F* n& w6 k8 s" ~& w
to do-trade1 d! }+ }, _8 ^5 j
;;
这个过程实际上是给双方作出评价的过程: ~% P$ ]1 w3 W" z" \
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
" ]2 s! l# ~1 l, Bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价; c2 g% L  O$ l3 ^5 J
set trade-record-current lput(timer) trade-record-current( b8 {; M: u0 ]+ |, c4 W: B' o6 S
;;
评价时间
: Y5 S8 V# ?) g; ^5 e' }ask myself [
" _/ V; I7 L) k" v6 fupdate-local-reputation
8 f5 ?* B8 W* l- X" n" Eset trade-record-current lput([local-reputation] of myself) trade-record-current
% N9 y3 r/ k/ }4 \5 I* T]
* J) u1 g' p1 ~& C: Q. Qset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself) i$ ?# z: p, g* _5 |
;;
将此次交易的记录加入到trade-record-one+ V% J7 I" Y3 G* v$ S
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
0 Z8 U$ l  y6 I! V  `) vlet note (item 2 trade-record-current ): H/ I  [) g. Q$ v) @
set trade-record-current
7 ^' W1 S5 w6 U4 B1 B(replace-item 2 trade-record-current (item 3 trade-record-current))

2 O' d5 y* j) z: ?set trade-record-current
' v/ b! Y/ O% X- v3 s9 u(replace-item 3 trade-record-current note)2 c( Q5 v) b# s' S  @

) s$ f& G$ Q& `  d
9 ^6 i8 R( n& @
ask customer [( s0 w9 X; P* H0 T% H  E1 c! r
update-local-reputation( u4 R/ w, J8 v2 N0 c% [  n
set trade-record-current' c# K/ h' q2 o* c6 J1 y' \2 C- x: d
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
) W4 o; r% L# f2 r' j
]; q, F( b0 k: w/ n. a) i! k7 P. f
8 [& E9 P7 C9 x+ Y
# o: p- o" X. h4 Z; {$ k- R0 X
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
! f; _! U* h' @+ t9 G* k& D$ j0 z+ p
2 A- I3 g+ u# _$ ?5 i7 X/ H
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
# A/ l+ R  J8 M, y! ~;;
将此次交易的记录加入到customertrade-record-all2 x& D9 _8 p/ ^$ h5 T. ^& q# l
end- u, F+ Z) h: ?& e* Z

! {: K7 Q% i# l9 |: T( _to update-local-reputation
5 g' |& h2 H: p% N  }; Yset [trade-record-one-len] of myself length [trade-record-one] of myself
' u, d! P6 B" r* M/ D. Q5 {& B
, u, D8 G5 q. s6 s& w/ N$ F1 V$ ]0 f8 `2 H
;;if [trade-record-one-len] of myself > 3

# |! u3 X7 ^4 f' v- Kupdate-neighbor-total
: O& d& F+ i# D7 Z;;
更新邻居节点的数目,在此进行& y( r7 ]% W6 T# `7 @
let i 3: {! e9 L$ q5 d" c2 F
let sum-time 0( F% H" l1 Q4 y' p( p6 b
while[i < [trade-record-one-len] of myself]
4 d% m! e  {* p+ u1 h. u' x- K6 @[
5 ~  W! t  }4 v# L# y! nset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )5 C! C# K! p& y/ O
set i
4 |6 s" _4 S$ d( w) {  b6 v( i + 1)
: i2 W& u1 K0 k" n: B( b7 B1 x
]
/ i. Y0 Y0 S" _) Ilet j 3' f$ t/ \. q+ }: f
let sum-money 0
% H  R- z, G3 `1 Z1 {' t: ewhile[j < [trade-record-one-len] of myself], L7 k1 c5 F/ q& A# x/ W4 i% d
[
( r/ @+ m2 N( z2 dset 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# J8 f5 W: h& I0 B0 G2 P( _5 z
set j+ a: U+ t* U) f5 {* d1 c9 ^
( j + 1)

5 J! Y. A% G* E% `6 n5 }]
; E0 J( \+ L! I4 blet k 3
3 G6 Z2 E5 a/ C9 o5 Z( B8 v/ Blet power 0, @  A% V5 K' \- A/ B0 b  m3 ]
let local 0
3 P+ g5 ]" w. A# |, {3 Hwhile [k <[trade-record-one-len] of myself]9 t) l( A" @5 ]- m
[8 U# v0 O# j/ o  n, Q- r# R
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) ) v& s( ?8 c, ~. q6 x
set k (k + 1)
! x5 s8 }, G4 [- U9 Q/ ~6 ^]
& V$ Z" e7 P& {: |) }6 P7 Pset [local-reputation] of myself (local)9 g6 C4 p. X% W7 ]* a. p% H
end% l9 d1 x. d9 V1 x

" Y* ~+ p1 n7 ]) s  r, ~! lto update-neighbor-total0 s3 G5 c: L( ?9 H9 O' l4 c
: r$ Z5 }! e3 ~: E& v* \
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]2 K, k) u" t1 {

& ?, L  @+ o9 O, P& V/ t* f- G

1 N9 W5 g  g' Q5 l3 send2 V1 }* j" V) G6 z1 ^

1 r0 z0 k; D- _1 Y6 zto update-credibility-ijl
% l! Z  L: W4 |- ], R: G% X
, b6 a& W) j" J( t' O;;
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。
% z7 I9 \8 {$ O- b& Z2 ^4 {let l 0
! ?2 w  \  U0 Q2 e( d1 ?2 R$ t: L, n% dwhile[ l < people ]8 s9 o5 x+ |* c) a$ h
;;
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; t) O6 `% ?/ M# D* ~
[2 q( c3 {" k7 B* B/ c: S
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)* `4 u. B& h$ Z5 W  ^
if (trade-record-one-j-l-len > 3)" z2 z0 L* e! z9 G9 A
[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
4 \' d8 F' X+ e2 V" rlet i 3
+ T0 D2 k3 \" z: E6 v2 |8 slet sum-time 0
8 [% N; r- F: [7 w1 \while[i < trade-record-one-len]% d2 i7 R+ _& r  N( e" ~! r  [" s$ {, ?
[
( X! _8 u% E2 a0 Iset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )& p+ }( P4 K" H  T
set i
) Z1 H/ O2 t; a: V  N- k( d8 {( i + 1)

+ I0 h" j4 q- P- T8 m4 S% \]
0 f- w9 m- u  {) ]' y% I9 k4 b0 }let credibility-i-j-l 0
5 F  U0 B) P" \;;i
评价(jjl的评价)' P; W6 A" k8 C+ k( Y/ X7 w  U
let j 3
% n. e# ]/ S) Zlet k 4
# X+ }+ @: P6 Y' owhile[j < trade-record-one-len]
! y, e1 ^9 V% V* N$ v4 \[/ N; B1 z! f' d2 A
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
: M8 k, Z8 i/ c' @2 c( 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)- f( a7 j& s# m) l$ o( v4 F
set j# b5 j6 w# q2 m) d5 G
( j + 1)

: \& }- \( D) Y* T1 |]
( U2 M2 V2 c/ z- e! ^" S0 eset [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 )); V; F. R2 q4 t3 B

* x+ M+ Q4 W8 G& P4 ]/ W( j

% }: @9 K* D$ O* c2 Ilet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
. F' b7 w% Q7 q3 B' };;
及时更新il的评价质量的评价- n6 B* v1 T$ O, h
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
$ |0 Z8 Q1 k8 P# u# B$ fset l (l + 1)
% p/ {0 T  i: s2 g7 \2 g]
) {" Q4 z# V. gend
$ ]$ r' |8 Z# u3 g  t" O5 t/ ]
- p, j4 e' ?  E# x: F5 Lto update-credibility-list2 r5 i' _. l& U$ `
let i 0* |& w- c4 p" L# R
while[i < people]
) A! O. z# w) J0 q[
. S+ o; S/ x: V! s  Blet j 0
7 [, k$ e. W  e" \let note 0- [$ o$ ]& }' j2 K( b) V
let k 0
* b0 @3 c7 G3 e4 P0 l/ q- E;;
计作出过评价的邻居节点的数目
2 E4 p6 V+ I% J9 V6 m, B: Y3 wwhile[j < people]
$ I+ h1 n7 h5 e3 Z6 Y; O[6 [+ u! F; X7 _
if (item j( [credibility] of turtle (i + 1)) != -1)
- u$ g, i1 p9 ~% k, w;;
判断是否给本turtle的评价质量做出过评价的节点
* e5 Y3 \# a# Q3 ~0 x; |9 K7 {[set note (note + item j ([credibility]of turtle (i + 1)))' ~* j8 d# I8 r8 t0 f! Z6 \
;;*(exp (-(people - 2)))/(people - 2))]

9 V, J9 ]) g/ p7 Z5 aset k (k + 1)
1 t/ @3 s: y0 }2 O; c$ G' x: C]
# G0 K, ~; d9 _* u9 iset j (j + 1)
/ L# M0 k+ w6 r  J% W1 J; {]
5 N7 D3 F3 _* @0 v3 N" v" o, N3 lset note (note *(exp (- (1 / k)))/ k)1 j2 D# q; Q) }
set credibility-list (replace-item i credibility-list note)
5 j8 o; h% U7 G: Z& O/ Rset i (i + 1)
  h' S7 J& x2 k* l2 D) a9 H8 k]
. w+ X' Q+ V$ |9 Kend; h6 c' ?2 G! ~5 L
- E2 v, H- q* R; W/ o2 e
to update-global-reputation-list
$ b: R8 @: `2 _3 G( Wlet j 0$ O2 A1 o% B( b: Q5 S* Q3 w; ]1 t
while[j < people]
' V1 {/ w) b4 Z' u' x[
5 g9 ]+ I! R# slet new 0
% Z4 V: c1 p# T8 q;;
暂存新的一个全局声誉9 l) ]; Y& L+ `3 a9 t' h
let i 0
  ]6 e* |1 k; Y0 Zlet sum-money 0  u5 H8 @$ L+ @* Q2 |
let credibility-money 09 J# w, F- K4 \% h. A! z2 x
while [i < people]' T$ l: p* A, r3 ^; f
[8 z; N- `  Y1 C0 D
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
$ S) }; g! t' z% T7 F+ C7 P; {/ rset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
: W6 K$ t3 E$ Q4 w) j! s+ G( ?' I2 Uset i (i + 1), `8 h% f( G" O( e7 K/ j! k
]
' Q3 Q3 Q' ~4 rlet k 0) Z$ s  c2 @8 c& H, {
let new1 0
7 f' T% p5 @9 W, c' F. M* W: jwhile [k < people]; x* c( A  k( [. H
[
* T" R9 B: M. |0 P" v& 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)7 F& ~; `" H7 H/ p2 Q- p
set k (k + 1)
% w3 q, U. {6 c5 {( D5 _" v1 a]
. K+ v- p0 G$ y) R9 o2 `6 [set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) " p; Q, g) n* w2 _/ R
set global-reputation-list (replace-item j global-reputation-list new)9 a6 A) q$ Y: e5 i
set j (j + 1)
; \% n- Y0 R& ^- m]
8 h* ~, B/ s! R/ }* s6 jend
. f" w4 _1 h# T. O
: @/ b, T+ \" z6 @
; k- E- c8 X2 L3 e8 W  ]$ f2 ?) B! N- L
to get-color" x+ K$ j- |% c9 i( ^% T" u

+ w9 a0 y# _9 aset color blue

5 Z5 [: h5 A7 o# f# Qend  H/ h- r  Z0 m0 ^1 ^; k

8 D3 Z7 P$ y/ Y" g9 ], G) Ito poll-class  R0 S' T* S% i" u
end7 H7 f+ r2 m, o- D4 l0 a3 I: R6 i. M

1 A* K: T0 ^4 M( c/ dto setup-plot1+ s! G0 y, E; t, H+ F
6 |- K3 l9 J4 `- e! Y3 T
set-current-plot "Trends-of-Local-reputation"
& l+ s; V7 `" r4 R& {6 b) V3 h

3 M" W' |7 p2 c8 A. E. m+ j; wset-plot-x-range 0 xmax

7 k* ]# D$ Z8 Q. o
5 [, T- m5 ?1 ~. M( H& }set-plot-y-range 0.0 ymax

# P( B" p, v6 O8 T- k8 d7 ?5 Oend
& x% Q" r' X% ?9 D" M0 v
: _5 L/ q* j: ?, s" i! Q; w# Ato setup-plot2
% T9 E5 T! x6 F  J" }' Z
$ r( d3 J6 g7 Z" y* C0 cset-current-plot "Trends-of-global-reputation"
" `8 k/ N; i  i7 n3 Q9 A  ^- J0 u
6 k4 d0 @0 P- ]$ p$ X1 P2 J
set-plot-x-range 0 xmax

9 l$ R  s( v7 Q0 m' m9 T
/ j- j- }( i5 }0 rset-plot-y-range 0.0 ymax
& _3 _: ^4 e( A# h8 `$ w* o1 t
end7 e1 x$ f  ^; p: j8 Z3 K
$ ?9 E) U! A+ x( B, q6 p8 q7 `
to setup-plot3
- m3 s. A7 P$ T  H
4 X- U6 O5 s! W+ ^set-current-plot "Trends-of-credibility"
" a) V2 ~- \0 W# b, g

6 k; S" y/ v) `" |set-plot-x-range 0 xmax
" Z% @% P0 }) {- u" g- O( H9 ^

7 A0 z4 @; C9 ]$ n- o4 S) E' a! G4 lset-plot-y-range 0.0 ymax
0 E& h9 g+ ?) g- I3 P0 N
end
$ Y4 u; {- ^' m) _) n! P1 w3 Y9 {1 @# ?6 }$ r; |% y( T
to do-plots
% z1 y8 T  ^6 a( B" Zset-current-plot "Trends-of-Local-reputation". Q% c& _2 A3 M9 _
set-current-plot-pen "Honest service"  u3 O! W# ]1 P9 O# W
end
' p( ^, Z! I6 H
# [, W1 L3 L( z[ 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.
7 q9 ~2 [, r; T6 o% N" s
) r; q, n% e2 j6 A& b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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