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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:
' d+ q& }  p- v2 c- Nto do-business 3 Q6 U/ _7 Z: X# x1 k# J
rt random 360- z* u8 m# [$ m: h: b
fd 1
+ |0 s$ Z0 U& N# X( E* z ifelse(other turtles-here != nobody)[) T+ r0 V/ T# d, }' r8 g: c5 @" e8 Z
   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.' V1 X) I! u& D* c2 [
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
+ ^5 D$ ~! {( M( k# I   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer+ w8 ?! y! K: Q7 n8 F9 p3 h3 @5 \
   set [trade-record-one-len] of self length [trade-record-one] of self
" @: \/ |7 j: Y   set trade-record-current( list (timer) (random money-upper-limit))) |' F8 X) [1 P5 R! D
: D9 l8 T# G3 x. t
问题的提示如下:4 W4 K9 f; j7 W$ v& u4 t

( |. q: N9 k3 N5 T1 J3 v% G5 G& yerror while turtle 50 running OF in procedure DO-BUSINESS( _4 `5 J5 F% b; u' r# m
  called by procedure GO( b# H& l9 c) {/ w. e4 [4 z! G; F
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
) E6 Y3 q: o% r$ \" l1 Y; v2 `
(halted running of go)
- X0 R# G$ k/ s9 z0 _. ~1 P: d( d& d& W4 r9 E" r6 e! X  J) I
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 p0 z  n0 C9 s* z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
5 {6 Z, ?+ u' Hglobals[
+ {  t6 y' O* \8 z2 ^xmax  [# s5 L( L8 Q0 w% V2 [8 b
ymax6 W" }; p0 F. X7 i& L
global-reputation-list
# M" C% d! g% J0 Q' f, s3 q2 y* h3 ]! t1 i
;;
每一个turtle的全局声誉都存在此LIST$ \: H* Z0 @' _& s' Y$ ?! O& ^
credibility-list8 p& M6 k5 o$ R" d7 L3 S/ Z2 M, z. q
;;
每一个turtle的评价可信度5 R8 g$ F/ n( Q2 `" u' k
honest-service3 q3 p4 G' N1 A7 [3 \+ h( B: N
unhonest-service( q: [$ N! C- X7 J) C& O9 C
oscillation5 F9 {# }  _4 Q: w5 P
rand-dynamic
( H" m' K8 O3 K% v, Z, q]
9 F5 a4 S8 M5 H, P3 P$ L* S& O/ t& j  R5 t+ M4 P2 Y6 d
turtles-own[' x1 B5 K3 J$ J& B( s' L
trade-record-all
/ y' L/ |3 _' i- p;;a list of lists,
trade-record-one组成
1 j$ n: c3 r% `! Dtrade-record-one
; N. A9 e$ l3 x0 o* U;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
$ M  ?& x8 ~, u! k$ e$ H: i2 f5 `, H+ X/ B, K
;;[
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]]
' n+ Z" v. L/ Z2 r. ?' Etrade-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]
; F+ B3 x- @/ r  X& E+ J7 _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
% X& y! p" c8 Z. S6 i; p# @( s; tneighbor-total' C0 E/ {/ x5 R1 |9 B' S( @. U0 l
;;
记录该turtle的邻居节点的数目8 T5 I( c5 i6 H
trade-time
8 v7 d& D# i& V/ Y8 s;;
当前发生交易的turtle的交易时间
2 q/ R  F! _9 ^( ]2 Vappraise-give
8 N, E/ l  a9 R/ a7 e# i) h4 X;;
当前发生交易时给出的评价
7 x9 l$ P" ]4 {3 ~& A5 ]appraise-receive
& _8 M+ Z, O  x/ g4 X;;
当前发生交易时收到的评价
. g7 D, d3 r  Q( T# k; Q4 K4 H5 o) Dappraise-time
* P9 Y$ w# ~" L) o0 b. e% R;;
当前发生交易时的评价时间" e$ x5 l) h  p5 Y% B
local-reputation-now;;此次交易后相对于对方turtle的局部声誉5 {' X7 c- l4 M2 T3 i; J
trade-times-total: |; \$ p6 E% D/ n5 @/ |
;;
与当前turtle的交易总次数
1 w* X  Q& s, T+ Mtrade-money-total1 p$ x8 O0 T* l8 k: L
;;
与当前turtle的交易总金额3 V+ K/ R6 _& M
local-reputation
5 e; {. D" [, y8 _% }! c" {6 B% gglobal-reputation
/ S; Q' C" s2 p& D" Z9 zcredibility" N) C! N2 }) }  v: v. A( v5 T8 [1 B. k
;;
评价可信度,每次交易后都需要更新7 S+ b5 e) f/ S
credibility-all$ o" U, j, Q7 _  m
;;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
  Q" }1 ]  `* F% X9 E. `3 H- h- Q+ B6 ?3 f+ p+ ]0 D. I
;;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; R3 H' E6 p; l$ \; q3 Q  D
credibility-one9 ?9 R, x5 p1 [& y: r
;;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people5 K$ P; y# B1 D& f9 N. K4 D- r0 w
global-proportion
9 u& w" p; c2 k0 x0 `customer
2 k+ n( b0 u/ |- Jcustomer-no
; s3 S3 h: X/ S! [! D$ ~+ Ttrust-ok2 U4 ~3 c; c4 \1 E3 u
trade-record-one-len;;trade-record-one的长度
% a6 y( z( q& c]
! A9 D. p/ D1 U* c' @
, O' {) D7 V+ H" T! |* S2 w( K) B;;setup procedure- o4 f  g: [, t# j2 H! R9 g' c; V

' P! @, Z; G8 fto setup
: b! H7 _! j$ w4 K
) g+ _. T9 h0 ^ca
! `9 L9 _: G* [% T5 u* E, l4 @
: @7 L, G# b! q
initialize-settings
& B1 j# F# e/ v
3 ~8 l3 u$ [# }# s+ Z1 R2 S
crt people [setup-turtles]

# k) @5 T; j( m* [9 i4 k6 R) w  y" S+ v
reset-timer

4 f6 t, E. B0 F& n4 u4 k+ c$ v7 c5 U2 V/ Y. y9 e- H
poll-class
5 m* O1 b9 e  g4 P
+ G0 b% v2 i: s7 E' N& ?" k
setup-plots
+ U+ W- u; I, [! ~" R. p

2 m8 j. g- R. ]; l& zdo-plots
$ @! ]9 }: v8 Z4 W: w7 h7 X* x
end
  Q0 w: u- V, T- o' Y* w
: m& x) U) ]+ v  M4 zto initialize-settings; ]6 q  q* r+ q8 s3 E$ q! o3 g
" b, z8 C* A7 k, M
set global-reputation-list []
( I9 g% Z) ~+ f+ @
3 M0 ]' s- F5 ~: s% n
set credibility-list n-values people [0.5]

% m* y/ [7 I+ H7 o- W- G' `( r2 U  T! E7 `9 g
set honest-service 0

1 _  S2 b  F% P! e
* J7 h' {% }9 Q( H& v. `set unhonest-service 0

9 a! R+ b. _' y8 F" w& u% [2 k# l
5 a9 @! H. s! C, o  Xset oscillation 0
9 O( b( K; R! m* x  ~% [

2 F& V' j7 i- ]7 q3 o$ T: t# \5 `set rand-dynamic 0
! ^" n  f% \' M& a" r
end
. ?3 X6 s2 O# x6 Z+ E+ B/ S" v8 J; O3 `6 F/ ?( u
to setup-turtles
' i; k( K$ @0 @set shape "person"( R/ T9 l, F. L6 Q
setxy random-xcor random-ycor: ^1 M% n* |% B3 Y. S
set trade-record-one []7 T1 Z' u, l6 B1 @
: j( K1 r8 i) d9 w" ~) j# j1 Z: |% [( K
set trade-record-all n-values people [(list (? + 1) 0 0)] 0 `, I5 d4 x# ]  \4 i  W5 v
5 m3 ?6 }" e' y) o$ L( s
set trade-record-current []2 h1 X: P/ C. v4 E' t% `0 Y
set credibility-receive []
- M8 ^8 |3 z' V5 }) c5 F" ?0 mset local-reputation 0.5
: k+ d1 q9 u* _/ G1 N1 |set neighbor-total 02 p- q- K" `: N* W
set trade-times-total 0
2 ~& {* D8 M. T+ F* i" c; Gset trade-money-total 0
( b, b9 E9 z- R3 M& V! J/ P4 Fset customer nobody  S8 Z% X1 W/ H( p: N1 n
set credibility-all n-values people [creat-credibility]
2 I" H  D$ ^# d: e0 Yset credibility n-values people [-1]# f  I7 R: N8 W& d3 Y
get-color
  b" ^: C- S) e
/ w0 {; I4 L7 c1 x2 c0 N  ]& l3 T
end+ w" Y; n5 p$ |: ~+ j
7 i3 u3 |+ Q. t
to-report creat-credibility
0 n; Z. K/ \1 Vreport n-values people [0.5]2 L# c% V6 x% Z
end( T, D, S2 J3 D0 `

2 U, ^. R2 m  x3 |to setup-plots  m/ v9 A3 E) u& B% n6 _4 M' [
  E* Y+ e0 C- p0 [8 d
set xmax 30

" f6 @) z7 X; h2 ^$ y$ I% Q! k# t. X
set ymax 1.0

6 H8 e. C+ e& o3 x& g. Z
8 }! |0 y/ }$ v& r( rclear-all-plots

8 _! H% \! K5 n* [$ r  H1 p& k
; K0 D# i( n; r; i% Q) zsetup-plot1

6 i5 \( m8 q0 M( |! j( }7 a7 `+ T& I5 a7 e  q9 |
setup-plot2
, A7 j0 c2 {% F7 t0 {0 v  o

( l5 O5 f! b$ |( G1 Jsetup-plot3
% ~0 h8 k$ O% \9 s/ M/ r
end
3 e/ t& E) O" l+ h0 P5 C/ _+ r; j9 `  B2 o) I; X: i. I$ }' R" I
;;run time procedures8 r3 H: l3 h0 M- Q2 j& |

: O7 x3 ]5 E. D0 I3 C! xto go
* d# X0 ?+ T, F) N% r, Y) r" }9 @9 d# ^, B# w
ask turtles [do-business]
" Q4 A: L% ~2 n' `+ q* N6 p
end& b3 c) q1 r# i3 s* H: }
' a2 i( T  W% A; s4 n
to do-business : S, w0 ^* {3 d$ G

  \, o' W! Q0 ~, X3 t  i, z* n9 H! r
rt random 360

# s5 B2 H! Y0 ^8 e! W
2 n5 t& Z+ s9 ]9 e8 L6 u4 g. ?fd 1
5 ]! @; M2 A$ ]; e
$ }# u6 `  @8 S
ifelse(other turtles-here != nobody)[
6 C+ j6 F3 Y3 f3 L

3 n( B4 h* v  F+ I# kset customer one-of other turtles-here
1 \: W, O6 `& @/ b7 C; l" d
$ }+ D& e2 z% E+ \! h! Y
;; set [customer] of customer myself

4 Q5 D1 Z* D% p2 X$ e1 V# z" W: ?8 `6 r# P) U& ^
set [trade-record-one] of self item (([who] of customer) - 1)' h0 K0 q0 ]7 h
[trade-record-all]of self; E$ s% z. _. y/ x0 {, ~
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

! e' P4 ?' H' f% Q# C) k& L6 g
/ d& Z0 q& d6 f, U( l0 vset [trade-record-one] of customer item (([who] of self) - 1)
, X' y8 X  _* V$ P4 J) @* n[trade-record-all]of customer

2 q% `1 T1 j- X' ?% ]
1 \( k1 y& b9 o9 V! \set [trade-record-one-len] of self length [trade-record-one] of self
2 h0 Z: ?: e/ y* @9 e

5 B8 I2 }. `( uset trade-record-current( list (timer) (random money-upper-limit))

% c* v, t2 P& N9 ?4 j' l" W- j
% j+ m: C+ ^/ z9 K2 I& dask self [do-trust]: |, h- t5 e" n& r5 R
;;
先求ij的信任度
# p8 G7 `  y( M. l& O" q! E0 V: k. I; r  }
if ([trust-ok] of self)& j+ N; I0 I* s6 Z8 h9 x0 h. Z
;;
根据ij的信任度来决定是否与j进行交易[" x# H& {7 O8 |" Y( ~8 a
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
6 x2 U: S% n2 O
) W4 t+ R" o" b4 O. r! p0 T7 ^  n1 H[
& s1 s' ]8 O- ]7 |+ w9 N) M
+ G/ T( J9 u  t- f4 r. l. o4 _
do-trade

3 b  L" M% x2 G+ }6 i: c* ~$ S4 W) S$ q" v( I7 @2 ~
update-credibility-ijl
9 C" i3 [1 @4 {. u/ U5 z
0 [) m7 p% I5 Q) F
update-credibility-list" ]1 K4 T' K+ `) w: I

5 Y5 w! b) T+ X5 W- B; {# E' T5 l& B) o. k# L" }
update-global-reputation-list

8 T0 _; n: P' ?  m( K* l8 K. N6 G9 ]: a  M$ t2 a- E3 e
poll-class

0 b# q% i4 |1 D
- ^* L, ^; D! c2 ^% D4 j& I# J7 W' Eget-color
1 |, |- D& z$ V/ t3 `+ Q4 L9 s
7 S  c+ T4 p6 s+ e3 v& D! D/ M
]]
4 ?! y; \" b* r
) Q! X% C; i) r* {1 a+ _2 E;;
如果所得的信任度满足条件,则进行交易
/ e+ Y- `1 W3 w( N& E  O, n, o. R0 A+ Y" t, ]
[
5 r  n2 z! m5 Q+ A) H) G9 [. f' k
& t/ ]& h. `+ e, B* a4 n' [+ A, P
rt random 360

7 |. w, a& }% q0 U
+ P0 t, i4 O' A7 l! nfd 1
+ @3 J8 q1 M* j6 H0 X

3 p4 T4 }7 i( x  J]
7 C( O( y  T( H
" q- U8 J! i. k( K% ~
end

: W) C) l) x' o( p# d9 x* K. ^9 s+ w' W. Q5 Q: @
to do-trust
; Z: Z7 A- g% n& e% ?* lset trust-ok False
# j) L) s1 e) n( c/ ]3 e1 w* o( s

9 [* A+ g* V' i4 elet max-trade-times 0
4 N0 E8 p7 N! M1 W" I4 _foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]& ]9 K& _4 e" E
let max-trade-money 0
& G2 {5 J: Y: q$ E7 {foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]/ }/ r/ F" F4 f% }  s; k
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
3 N5 v/ ?6 E3 g6 y
) b5 ~! L0 o1 v5 h
- |9 i3 @" Z- g3 B1 @6 g7 C  U0 [
get-global-proportion2 h, F* g. Y  a/ \$ i* C: b- t
let trust-value
. J5 |1 X; i" b8 _) G: [  X+ nlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
) h3 J+ r/ y  A9 \
if(trust-value > trade-trust-value). o9 n% _5 V% G$ s0 m
[set trust-ok true]% E4 G- m, d, i9 W5 d
end
! G# N/ ]8 R9 z7 z6 v$ q& E
' Q  t1 O% ?; [/ [5 I4 Vto get-global-proportion7 o1 y1 _) W% @( x
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3); z+ I4 S" W8 y( [
[set global-proportion 0]
+ }6 `0 P0 D" C7 D. Y% X( w[let i 0- o: L- v" ?/ }& ]
let sum-money 06 W, f. F: W3 E
while[ i < people]' J6 M7 ]4 K; z8 s
[
  N: K3 A, |' ^' Aif( length (item i6 q+ ?' |# m+ {$ x" I6 C9 u) l
[trade-record-all] of customer) > 3 )
4 T3 q% u4 `6 M+ u
[
. O+ u$ W1 |4 B$ e  K# M. Zset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
4 D6 v5 w2 B' f- f]
( `# O3 L- R8 d/ O$ s]
7 P# H: D6 h/ m$ W0 l' @4 ~let j 0
1 ]" [& v0 Q  plet note 0
5 }* i0 }$ C/ ^: R/ Dwhile[ j < people]' J% B8 A1 _$ z, i0 ?
[
3 A( j3 O$ F) D$ i) n9 P$ |6 Nif( length (item i
4 g+ T# O; ~4 b/ q[trade-record-all] of customer) > 3 )
- t* E& o2 ?$ H4 S) j' N8 W+ l
[- D- h; t  z- M8 R8 ?
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
+ y6 \/ t# V* C6 Y[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
3 J  J' Q9 L0 l[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]- [: e! f6 L8 A' W0 C
]# w0 H1 [4 m$ [- W: i- |
]+ X$ e& w% [! N6 J& ]; ?
set global-proportion note: ~9 [2 s( u% U3 m) M
]( [# V* o% L9 m) b
end" R. d5 u; x; Z! D9 v1 f7 V$ S
* F# c3 T! b3 ?' G
to do-trade
' v, i# b6 K: ?( k;;
这个过程实际上是给双方作出评价的过程
4 e$ \, T+ n, i) rset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价* i. T. D1 z# C1 L9 S" k
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价9 @7 s( h6 A) x5 y
set trade-record-current lput(timer) trade-record-current5 m2 ~& N% [8 k& T
;;
评价时间! }2 s- E( n1 |! ~
ask myself [
: s& r9 d6 G6 w' Z% Y" Oupdate-local-reputation$ H7 x( ~% z7 ]$ c  @
set trade-record-current lput([local-reputation] of myself) trade-record-current  x7 J# j! a' d* E" Y9 l% H" ?" y
]# L  [! \1 y- H; j
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
! f2 s! N% Z+ w- U) @3 ?;;
将此次交易的记录加入到trade-record-one: p9 |2 z1 l; g8 T& H5 L
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)' N. P, o% U: o% k0 e# j* ^, [9 M
let note (item 2 trade-record-current )( e/ F8 V+ H7 r, C
set trade-record-current) C/ Y7 e8 N( b' {/ X$ m. q* i
(replace-item 2 trade-record-current (item 3 trade-record-current))

* d; {' M" C; x6 Q0 Fset trade-record-current
% X7 S1 b" B8 ?  m  x: q2 ?: F(replace-item 3 trade-record-current note): S# ?8 f/ y6 _

: a5 U+ k7 f5 c( W. U( V  Y
  b! J# `# L% d
ask customer [
7 W9 v  S2 Y3 k; o. F" V: Vupdate-local-reputation
  i6 y& v3 c5 r7 M* Cset trade-record-current% _9 N6 i& L. g4 C& i2 o
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
5 `; k2 H" {8 o
]
) o; f5 _3 k0 O! @* y
3 p3 `$ m9 H" X! y7 D" E1 ]* [# k
6 O( W  h6 a" V. J) L
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer  l6 k' }7 D* n- o, {) r- P. O; }

+ u( G+ o$ V3 p  z/ f5 ~set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))" g4 ]* V( s0 t  C! Z* A
;;
将此次交易的记录加入到customertrade-record-all
  i& U+ O' L  y, T* E2 e9 Fend
/ z3 x8 W$ p- v% S* ^* u, a  p, [6 [8 D* d& }
to update-local-reputation
* X% F% ]- k: ~, @set [trade-record-one-len] of myself length [trade-record-one] of myself, L2 z1 l8 H- E9 ]5 J
8 A. k7 a$ I& R' U

5 l" t. a+ z: e  H- B; l;;if [trade-record-one-len] of myself > 3

, z, V4 k! r3 B4 ~! f. u0 z" nupdate-neighbor-total
3 a. \: x* {- u) s; ]# Y; t$ W1 A;;
更新邻居节点的数目,在此进行3 x+ g+ M' |$ }7 Q# Z$ O
let i 36 T& l# B4 Z2 e  `8 }
let sum-time 03 p, d# ^( D0 X9 i3 n# V+ y# b# ]% O
while[i < [trade-record-one-len] of myself]! W9 q0 `5 U+ S0 o3 a+ _% V
[
2 y8 }2 X! l3 k& K# U) U$ hset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )  V. K% Z3 \4 K$ }
set i
* s7 w6 v: `, f9 H# p) z& z( i + 1)
8 s. N. b" `. i5 ]
]
9 a# c+ W6 i  u8 k7 u0 X& H, R- \let j 3+ Y8 M% p9 Z8 Q1 K6 T
let sum-money 0! b' ^, @9 j7 c' x
while[j < [trade-record-one-len] of myself]6 ?5 Z- t0 W8 C, G, z
[
3 C$ s' _8 q8 _7 _5 uset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)8 _: Y+ E& q8 G- p* `8 _
set j* K; {1 [# X8 m
( j + 1)

2 Y  F# \1 H# _8 B+ M% _4 c" ^]
$ {  W0 w% `; tlet k 38 j! @3 d3 M$ b3 Q+ A2 ~; P
let power 0
+ @1 S  s9 K% J5 Llet local 0- ]! ~: T) Z" P/ s( ?
while [k <[trade-record-one-len] of myself]
3 r6 @( y" l1 F- F5 S[
4 s; \8 Z, s" }: j# r* @2 wset 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) ; X& y7 G% A: i! B1 T6 P* C5 j% y4 [
set k (k + 1). g' [+ G# `, @7 ]# M! ^
]. [2 f) Y: a# ~% j$ a- S5 m& ~0 d
set [local-reputation] of myself (local): [8 c0 [: L/ E
end
8 v! f) C, ]3 j: ~0 m" C' }
% S: o( W# k/ R1 t8 }$ ito update-neighbor-total
/ R$ H. ~1 `- L: c
% F1 y$ q2 W- `  X( |% b1 [% J! K! wif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
5 c. t5 T6 a- m* D* H
7 a" b1 ]0 u5 I- B+ {/ _+ h
$ N" C! _$ Z7 D" h9 g
end0 ]% N3 K! Q5 W: m  w  I

+ _6 F7 S8 W, d. k; j1 ~to update-credibility-ijl % K( J$ X0 n7 P) S9 I9 h. K

1 r' O  Y5 w2 H;;
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。! P0 e* a: D# i% F1 Y/ z* w- b
let l 0
' W2 l0 _4 Y% owhile[ l < people ]
0 c& U% q8 G, v( O  W;;
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% e' b4 v2 K( C. _; Y
[: w8 @/ M0 U$ V/ t0 B
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)8 C! I& [* I3 r7 I8 y0 P4 k
if (trade-record-one-j-l-len > 3)( M9 n3 W  ~8 Z7 {% 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; F& L) O' ^, m
let i 38 U3 |" T, P5 ]9 e
let sum-time 09 n9 z/ g% K4 u8 l" _3 m
while[i < trade-record-one-len]
5 w, W/ z7 A; \* J0 T. H" ]( z[
% f3 j  V$ u! G' s! M; j) kset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )6 b" F% m9 @9 v5 I
set i. o  ^; G5 Z# A6 e' v) Q- L
( i + 1)
8 I- ]* [3 c+ s/ t9 a
]0 O2 H- f8 }7 f: }/ M. w
let credibility-i-j-l 0
; S/ e3 a2 t$ t$ i1 F;;i
评价(jjl的评价)
% |) k  T: T- k9 @4 D. \let j 3, D3 A' B4 [" {0 {& a* T
let k 4
. f" \/ n) `$ rwhile[j < trade-record-one-len]: B; }4 F, }$ z, p6 k( K  G' G# \
[
  M7 y$ w& K0 h" W, Z  k2 [' Gwhile [((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
& a+ v5 h% k$ X7 }set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time); O$ W' _/ Z$ l' R9 E0 t6 V" d
set j5 w2 ?0 b4 ~% M! B% ]7 y
( j + 1)

" b  D; K+ x; p' d* C]
5 S) Y4 l  t+ A* }9 s/ H# k& fset [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 ))
' s; S: I0 O7 n- S, g9 p) F$ m0 X0 H9 ~6 V5 p0 c) k
2 x  }7 F3 A( _5 t
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))9 V, \* A) |3 S* R. t
;;
及时更新il的评价质量的评价& J7 q, c7 w1 b$ i! [  k; [7 v9 ~
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
& o* |4 z+ g5 j4 }" B$ gset l (l + 1)+ ?' [0 ~2 f/ U7 t5 B. ]- y# C. O
]: G2 `! i0 `1 `9 o% I4 r
end- h1 b# q0 [& r- N# A; c6 q

, y0 u* r* a8 p8 h& \7 l% P: Yto update-credibility-list
- p# P! u$ y5 W- v8 J1 Llet i 05 K% ~, b) J8 z* r5 c
while[i < people]& I( @8 Q( d$ t5 v' f. \
[$ _  V: f' @8 _/ Y( [
let j 0
' R5 T% J; l8 e! C/ T! Mlet note 0, b( E6 T. f. T# e+ U/ L
let k 0
; L5 B) q) ^2 v# t( s6 M7 g;;
计作出过评价的邻居节点的数目% r& \, o& e1 K6 _% H
while[j < people]
" I4 D5 u6 ]9 R6 Z; e* g[
. R: ]4 W7 E8 T* P3 ?3 M* h2 v3 Dif (item j( [credibility] of turtle (i + 1)) != -1)3 ?: r$ c1 u3 ?  Y2 ~
;;
判断是否给本turtle的评价质量做出过评价的节点) g9 F8 ?, O6 I1 w
[set note (note + item j ([credibility]of turtle (i + 1)))
* Y7 \# g" l( h8 p) r5 i;;*(exp (-(people - 2)))/(people - 2))]

* C2 H/ C% \# z" t3 j7 W- Pset k (k + 1): I# ~) @/ S, [5 q* ^
]4 Q$ X) C( Q" P/ R0 ^
set j (j + 1)
* V9 l( N7 h# G" A( w/ b$ b5 q]6 p; k4 {8 u' g  K) \/ X
set note (note *(exp (- (1 / k)))/ k)
- u# s/ ~: b  |set credibility-list (replace-item i credibility-list note)' N5 Y  G- V& y! S/ f7 l' C
set i (i + 1)
9 O% q$ p) ?+ B8 @8 Y0 Y0 n4 y]
& m- O2 q+ P$ y" D1 m; Fend0 D1 H# r9 _5 d, v  J
" L- d4 E5 D0 A. z% a1 N. y/ v! G" D
to update-global-reputation-list/ U, v; i5 |6 J$ X9 m; E$ @
let j 0
% {! Y* U* k: s5 J, P) c. x2 Y7 g5 Iwhile[j < people]6 Z& S* j9 \& N, N. d9 n7 Z
[
; d2 ~# q0 G/ T8 n0 B8 alet new 0
( i: S! f# H$ [3 C& J4 p;;
暂存新的一个全局声誉
7 a0 }: O9 x5 e, ^, q- Ilet i 0* z. `) v9 |/ H, P/ e. f
let sum-money 0: h- Z# m1 O- N9 }: B
let credibility-money 0
; X  w3 G  t9 \while [i < people]
/ a3 F* x0 O+ X) m, o[
; v8 v9 r- E3 E$ I. hset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))- v% q* |2 ~) C8 a# P
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))# I8 z( H( W- F' w7 |" ~. {0 E
set i (i + 1)# ]8 T+ u: X& H
]/ r$ n7 a, T# w
let k 0* D6 T5 D) ]1 l) X  m
let new1 01 h6 c5 _4 P, t% l  W
while [k < people]
- e( X# K& N  v5 L5 R) O4 a[. G( {; F2 D, t( H% x
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)
5 i$ X0 b, z- K: T1 lset k (k + 1)
: n3 z* Z* `2 P: c) e* J% y. p) t]4 o; ^) G+ I% N) }% e
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)   ~! _2 M5 O' r2 Y  Q8 \
set global-reputation-list (replace-item j global-reputation-list new)
6 K4 h. p5 I( S! P: u, [" V+ Aset j (j + 1)
4 {- |6 R: g- |# E- R/ l. u+ T' }]
) z, d: }$ {- _2 ^end& p! J# P# U+ N0 s& O5 }0 N6 F) ?

; h$ n! `9 H4 c0 b! l+ f6 L+ ^8 F! G3 U

( f. e# ^$ c' F& q" h' n5 U1 eto get-color
( L6 {) _  J' T% \! m/ r) k9 C  T7 G$ d# T6 Z
set color blue

# H, ?$ @+ T  L7 nend% ?6 \5 h$ L! `6 x
. o1 l. @% W* r% b9 h8 Z( u
to poll-class
) n6 W! z# }$ w5 _! |9 F; Tend' W: @: q( Y5 ~) b9 W  ~; ^

  k, K4 f* S  d, E3 v+ W) Jto setup-plot1
: _, I# q4 \3 T/ @1 j& ^. E( o4 t. x! g% `8 ?: ?9 w
set-current-plot "Trends-of-Local-reputation"
  q% h6 ~! q# n: a+ m6 q* F
" b, T7 f0 |# \' k
set-plot-x-range 0 xmax
% B% j; r- D5 G, R$ ~' _
( f0 ^1 Q' n5 |3 K" k
set-plot-y-range 0.0 ymax
1 i# a$ r( d  R$ X% E
end/ \9 ^' n& J) O6 w9 I9 X' F

- F4 q) g# Q, c" c* Q* w% tto setup-plot2; t, a$ l- s: [7 }
4 s6 Q+ I% b! z7 S7 S9 r+ ?+ {$ D& ^
set-current-plot "Trends-of-global-reputation"
2 q1 D' q% f/ Q6 |5 K" G9 U# S
- |9 G7 }# |+ l- b# ~
set-plot-x-range 0 xmax
( \: e! \( ~# k8 `" ~& H
1 o' _; K4 u4 P. e% r  ~- i
set-plot-y-range 0.0 ymax

- ]: ^& Z" Y; g! N2 k( W: c- @8 mend( z# U, U! {+ j
! w! Y# l; X: A2 x  s1 u
to setup-plot3
! u% K2 u$ G( u3 E( y- c: a
* M5 ~* t: K. r* E2 L1 w7 Z* Dset-current-plot "Trends-of-credibility"

3 A  ^/ h+ {" u. x+ G4 b. L0 Z& \; |. _& ~2 Q4 q2 @" ?  r* I, D9 l
set-plot-x-range 0 xmax

. I) f( f6 a9 V5 |) T# x3 [3 j
" E# g; W, t  c9 _; a: {set-plot-y-range 0.0 ymax

( Q$ A2 ~3 ]* o9 b2 Cend, u/ o  {' H  }8 S7 W1 ?8 S* s
, j; v$ ^1 v+ I1 p; y2 J% t+ s
to do-plots
# k! D0 h. R; ?4 ?# bset-current-plot "Trends-of-Local-reputation"1 r8 O, y2 i  f1 U' x+ o* B# X
set-current-plot-pen "Honest service"/ o  I3 O! g# M1 u$ Q( b  n  J
end3 ~) D( D! a* S( L7 A
( g! M2 X  l# H/ t
[ 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.* l9 o0 Q1 }" k% X( p3 c

6 i' x3 M/ U7 X# y+ Y" B, a" z/ r' 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?
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