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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:& g9 ^% z! V6 t; {4 W
to do-business
' E) l) e- Q, C' i9 n rt random 3609 E# M, m- k8 `5 |
fd 11 U: x$ s9 C1 e$ O4 l1 s
ifelse(other turtles-here != nobody)[
. {+ r5 u2 c8 w0 r   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.' J  C6 F) |. V+ u& L# a  j
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    , M7 u+ l5 Q; ?$ M
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
1 z) b  ?/ x" z# `# T( Z   set [trade-record-one-len] of self length [trade-record-one] of self
0 o$ ]$ n" k: Y0 J( W7 u   set trade-record-current( list (timer) (random money-upper-limit))
3 T1 K# K6 J, s3 G. F' J& c, j9 j  B3 H' t* a
问题的提示如下:. G: m2 m0 [$ K) C  `

5 x3 Q4 T' ^' c# C: Aerror while turtle 50 running OF in procedure DO-BUSINESS' r" d6 M9 G' \# \" ~9 [. X
  called by procedure GO
- ^; u) j( F! w* w, x+ ~- l2 V* oOF expected input to be a turtle agentset or turtle but got NOBODY instead.. q& O( D: m& T/ Z* K! `  K
(halted running of go)0 l3 I4 y3 E$ h* x% W
9 h4 O% q, V3 I. X6 m+ E
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~~
& {: D6 D! I& g1 u4 U7 i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
; ^) \+ A% f- z1 F: G4 Aglobals[- [" ~; }  r* n4 r9 _9 F+ r
xmax
  V4 E  d/ i$ |& c% jymax. o# R2 {. _2 `6 Z* F+ l& |0 e& _
global-reputation-list4 H+ j4 P6 q, H

, E. ^  W& ^) v;;
每一个turtle的全局声誉都存在此LIST$ @/ J" k* a  ^5 G( G/ ~+ v; R
credibility-list& O# H3 _; m4 u9 a2 @5 W
;;
每一个turtle的评价可信度  z4 W7 U5 b9 w: @# T
honest-service
: y; C+ T9 F' x8 U) I, Yunhonest-service
+ Y4 d( c& _3 |! }  A: U; U; \oscillation
3 o5 |" v6 k$ Xrand-dynamic" X1 v0 \* l- P  m: r8 Z
]9 e9 G' X9 J+ I' Q
/ A6 X6 Y7 I- u: |1 R
turtles-own[0 d7 y  e: t* |' ?& `& U6 N
trade-record-all
/ g) G1 O  w) n& }- e;;a list of lists,
trade-record-one组成$ B1 z# u7 B+ ?% T
trade-record-one
/ H7 w: o2 t* z2 ]  j( k;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录# G/ d- `: V. C
% E  j! L" Q* Y3 \
;;[
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]]
" l8 {4 K1 c; p/ rtrade-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]0 e) m5 ]6 {2 z: ]# u
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- I& E) {+ k" u1 a1 h( I
neighbor-total5 [& {8 D7 n" l4 e' @' D
;;
记录该turtle的邻居节点的数目  R  p$ t6 Z+ L, `
trade-time! _1 S& i! x+ P$ G* }; z* W: W
;;
当前发生交易的turtle的交易时间& L$ d7 r# l1 G7 q( ~: o
appraise-give: f& i/ F$ ]# e4 w
;;
当前发生交易时给出的评价: _  I9 C, N8 Z0 _* D4 Y$ G4 J
appraise-receive
; ^" Y! _4 i" w. O( }  E- d;;
当前发生交易时收到的评价: F7 y/ Q/ ^) L: x
appraise-time/ v7 u# k2 u! T
;;
当前发生交易时的评价时间
4 R6 k/ W, ?7 ]3 O- o7 R- qlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉) L$ ?$ ^, T: a
trade-times-total
9 J3 `9 ]% R# c* t, t4 W+ q1 v/ S;;
与当前turtle的交易总次数1 B  c$ n3 S: X7 ?1 P0 S5 a
trade-money-total
0 @% W" L/ a" \! W( M6 x;;
与当前turtle的交易总金额* B  R+ V# u; Y
local-reputation
9 S: R4 N4 W% s# g( R+ vglobal-reputation
1 \/ C  G/ Y1 N6 Z1 ocredibility
( P6 Q  d) a/ K- v;;
评价可信度,每次交易后都需要更新/ s7 h' k; y0 _$ t+ A6 ~
credibility-all& G2 J1 b3 Z% `# v
;;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/ r! }9 `( X/ O; q
; {7 Q; C  z* ^% N! R# \8 N: F
;;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. a( A# @6 M3 q' M# p. `
credibility-one4 G: D# O; K+ _" f- ^5 d  E3 C
;;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, i7 ?8 r% g9 b1 E2 ?
global-proportion
( |: _- L, ^* ?7 F/ r; ?: N$ `) |& w3 dcustomer
- H0 }' O  P$ \customer-no
6 j( ?; O4 k8 y# h9 u0 ktrust-ok
6 w- `. Y; H' q: f( K* S* b& z3 t6 }trade-record-one-len;;trade-record-one的长度
' I+ G; p  F, v) J: Y+ \4 z* H]' V# h0 z: E& E3 z
+ J; A% o$ a5 L5 K8 p  K. A
;;setup procedure: i6 P" I& b+ U; f4 S( w
1 \+ \: z* w! I3 U
to setup
. l' i+ g$ f: d9 }* |0 T$ ^2 C: b* N4 b( t2 n' d# _, [
ca
$ Z6 v, _( \3 t; t

/ `& F6 {- @1 N- c4 Jinitialize-settings

! l* E9 ?' @$ {( T% Y8 y5 v
" H9 k- b( @; X" e% C) @& T2 hcrt people [setup-turtles]

  w; @* R, o0 C- |
: r8 T: j  l8 O" |2 ireset-timer
' v# t1 e. _' q; ^6 S0 H. E

: r/ i" b/ {7 l5 f( ypoll-class

* t* W& f6 h+ c1 l( I( ^& V/ O$ a7 ^4 e+ |. k5 x1 m4 y" g
setup-plots
7 A1 X0 Y/ G; v( O! {6 ^0 J- f; p
4 `: z' m4 D  K% S' J3 T
do-plots
7 _; s7 A; j! a$ f
end3 R& f4 [5 a- d6 k  ^4 _

; H" k! S1 R- q3 f3 fto initialize-settings
2 w. t4 }' N% U2 x- V$ e3 q4 w
. u. `+ l4 f1 Bset global-reputation-list []

0 e; t6 x4 [# `3 L1 H8 N5 x% W# X+ D; M1 z- e
set credibility-list n-values people [0.5]
- Y8 O# c  u% _/ u9 n

$ q& X1 E7 n9 r! n  ^5 G" Eset honest-service 0

0 h, q3 v: {" J( ], d# o! \" `2 h* K6 Q0 T
set unhonest-service 0

& x  V% _$ @" u4 V) q- O( k" {
set oscillation 0

7 A: X! G! ?4 z( k& \+ O7 ?1 f; g8 j" f4 d* D
set rand-dynamic 0

5 p7 W% W+ k" X5 ?2 wend, E$ N' X4 W0 e3 I; ~  U2 Q
8 \* \5 _6 a* m* V# l
to setup-turtles " A! K) F, \  z" w
set shape "person"
: Y) t4 T( x( \1 W  psetxy random-xcor random-ycor
- f% J) f) ?# i! A6 oset trade-record-one []
9 G% m# E( Y* ^) ^5 H5 G; y, \9 l

! T( ?% Q# c; [' U. t5 rset trade-record-all n-values people [(list (? + 1) 0 0)] . \& r' X, k3 O: f6 D  F- E

; v/ f/ @5 p' J  f. Xset trade-record-current []1 Z% Q$ b( m' \9 H! g
set credibility-receive []
2 X5 l* `+ q) c2 E4 o& wset local-reputation 0.5
  ^" q/ S3 Z$ K) A0 [set neighbor-total 0; M7 R! |1 w- f$ `( t
set trade-times-total 0
0 y* w0 T" M: L# T0 `: Oset trade-money-total 0% I$ A! X; c* b' [; `+ N
set customer nobody2 E/ m% ]& v- n% j- d- z$ |. c& }
set credibility-all n-values people [creat-credibility]
, F9 {8 w  }5 G- Gset credibility n-values people [-1]5 b. t: y) y1 |7 @, |
get-color5 J* r2 f1 I9 ]6 x# g1 g% B
+ w  R' ~0 h) o
end
+ H8 P# r* X, a
3 P; w0 ]1 j6 Cto-report creat-credibility4 I. [6 d& {0 ^& i/ G, x
report n-values people [0.5]  x& v, O& U' d$ ~, J9 ?
end9 V) k$ U6 {/ P: e

6 S7 X2 l3 e' gto setup-plots2 j1 d& P' g& K- [" c' \, T, f; T1 S7 C
1 ?8 I/ D" @, V0 D0 R6 T! J
set xmax 30
  r4 z6 r6 T. D$ o/ \  T1 Q* e

( i# k- i3 ]  u: Qset ymax 1.0

+ F0 y' m% ]! P& _% H
' G( b# J7 j# S, S* t5 r# V/ ^3 oclear-all-plots

. t3 |$ ^2 p/ E* e3 ], a! a7 V$ t- _6 l2 Q$ u  N
setup-plot1
+ J/ m& k# L( u' d6 {% Z
4 t, Q5 Z! G: h) L1 n' |- p
setup-plot2
3 A: S5 ^, K. U6 p8 V9 \
% w$ L9 Q5 t1 z5 q2 G. Z2 j
setup-plot3
7 A+ C: q/ Q- o" I! b
end
2 w2 n' _8 P  D  F0 c) d5 G0 _0 t; l
;;run time procedures4 V. a7 u1 L+ S) i- r
. I: t( Y" S) j1 M: j+ X8 Z
to go4 C! R1 z5 q* ]

# X* z( j# z$ V( @* E! z7 lask turtles [do-business]

! Y# h( o; T6 v, |2 ~$ @end- y& L( Z" B/ U5 c: Q& R5 Z) |

' }8 J; H" T9 Oto do-business 9 x6 b6 |5 L- W# S) _9 X) L

: L) c4 g3 O* D3 t( c6 K( O8 Y# b" `5 X, s
rt random 360

1 E, a; c! w9 K9 C! Q! ^
! b, n7 P9 L) b! c) h8 F/ k0 afd 1
% T$ h( G. x; n: c% T4 t: D- B
4 t- V1 Z. ^" I2 z4 E6 l& i$ k9 h2 s
ifelse(other turtles-here != nobody)[
2 U! Z4 w; p" Z6 K
8 }- Y# d$ |' H3 U" q; B" l# k$ B% C
set customer one-of other turtles-here
5 C6 @7 x0 M& D7 k- Y( z
. U6 @+ k; Q- r- X4 F
;; set [customer] of customer myself

  N# H2 x( W3 |# N
' ~! a3 C( y% W* Uset [trade-record-one] of self item (([who] of customer) - 1)0 U- L% N4 O# v( P- X/ b( r+ R
[trade-record-all]of self
' S# g5 ~* a9 A" {0 w* Y5 S;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
! p; Q& ]- O% d+ W  T4 D
) \7 K. K8 n; b' h! h6 V$ U
set [trade-record-one] of customer item (([who] of self) - 1)
1 j$ T4 Y. s! L0 o[trade-record-all]of customer

/ W5 l+ B9 _5 a" {3 S) L6 W5 Q  Z; G. `) c
set [trade-record-one-len] of self length [trade-record-one] of self

+ A' f; L) d' Q1 X6 ?/ B! q9 k
# `3 @3 K9 y% \1 p" e: @0 tset trade-record-current( list (timer) (random money-upper-limit))

2 J. d$ N; C1 x; i! z. }' N! z+ c) t3 P* o1 y, V. x8 o
ask self [do-trust]
3 X( `  E2 o) o* E) j$ M1 A8 };;
先求ij的信任度
7 Q. g) t4 ?5 f8 X/ @. Z) w# h& F7 Y0 L0 k: F8 V9 ?' r6 u9 k
if ([trust-ok] of self)
! S+ N5 l* b/ c. ~+ n2 A;;
根据ij的信任度来决定是否与j进行交易[: C/ e6 O) j8 P' U7 k
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
7 Q. R- L& d2 O
" [6 Z- ?/ e8 x$ `: _/ i* Q/ \7 q[

2 p! Y8 ~2 N+ K( F
7 p& S) p7 a0 T' J2 M  Z- ~do-trade

8 X- W* _# b) D6 f( l# f2 s- _0 B, }( d1 R7 W
update-credibility-ijl

) x; c+ ]( e9 F; R* w: c% w' F8 R! G: i
update-credibility-list& g5 P$ l0 K* f) V) b) m

8 B6 f  k0 I/ ?+ r2 O
# Z! J  M, I7 [/ P- R/ \$ y' R3 ~update-global-reputation-list

! m: t2 h: Q2 ]; `' B
' s1 Y9 Q5 r4 u, G* vpoll-class

6 S0 p; z. ~6 x4 b# }* G9 T' _. B: q) g
get-color

: [- {3 f8 ^: Z' p2 d) m, S5 k6 g9 K% b+ h" f
]]: d; r" X- D) p6 \3 f
( S8 T% u7 L# s
;;
如果所得的信任度满足条件,则进行交易
4 C2 j1 |) W7 s
' |( g6 p: t. C5 K$ w/ a[

/ A0 r7 P$ w6 s: @/ x7 x9 r' Z6 {/ Z! ~
rt random 360
. m9 U4 H2 ]! W% N) |9 V- y" i, k
) ?+ i, m2 i, ?* B
fd 1
& D( C2 r' E3 [: X! O4 ?

/ E& c, ?# ]& m; e& Q]

1 ]. u& R8 s; G, W. L0 h7 Y  c3 R7 n+ W- c! K4 J# [
end
/ s+ r  O3 p5 |* b( Z
9 V1 I* v' g7 a" D# ]+ i+ Y; r* r/ n
to do-trust
! ?. F5 Q" `) t8 Zset trust-ok False
* Y( N& {3 H5 ?: a; r1 C/ F
7 Z' O6 `! c) ]1 B
  z/ f, g' w! i/ a& `
let max-trade-times 0
* ~+ N. J% G( T7 E+ rforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
, |) d4 A  K; I( L2 X2 N$ Glet max-trade-money 0( i& a+ J6 C# |7 [; e
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
  w& p8 s' z/ ?let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))* I' A6 u2 z" T- e
9 o" a2 H6 t. E4 e- E2 z

- e( T9 y& X8 K" m. r2 n& K8 cget-global-proportion) v/ P# Y8 N4 Q! G' `* s; I; P
let trust-value4 R2 Z  P! y& d0 _2 x' K
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)

3 G* L& e- H4 L7 a& W" T! ]6 X) dif(trust-value > trade-trust-value)2 D2 H' [1 |* f& s
[set trust-ok true]
6 I! l: I$ v( [8 l0 Mend
% O8 _  E( r! O# D) n- g
& t1 ]7 n3 h9 D* u2 R4 O. Wto get-global-proportion9 ]' V7 }3 c7 u3 v
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)- [$ U! Y% J; O3 U# o
[set global-proportion 0]
: X1 A9 d5 H* B, G" ~( y[let i 0
  e7 }, k! a4 q+ j' I8 X7 vlet sum-money 0
% O4 g( `+ j# g+ u3 D  K& ]: ewhile[ i < people]( B3 z: ~. S% c; W: R$ B/ T6 v4 {/ }
[; c7 F+ ?) C+ v4 w: A! ]% l
if( length (item i" i% T, n/ a% W' V7 M" d
[trade-record-all] of customer) > 3 )

+ B1 n1 X2 T  ^0 j7 b. \[3 e/ T: R8 Z8 F4 }
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))6 J4 E. H1 ]" K' K& _* J* T# J) _
]7 q) y/ B) L1 ^. |* V! Q
]
, B' l# `& h) h' F# Blet j 0
+ H* d$ e% \$ U$ X! j6 L( Clet note 0
) N% f1 y7 R: Y7 K" Mwhile[ j < people]( U' l. x& j) H! d
[
2 t$ _4 [# x0 _+ v0 M( Gif( length (item i
% r0 k2 e8 y/ h" S  L9 E" i[trade-record-all] of customer) > 3 )
" u% c/ s! s" i- ?! m" ~# M
[
: Y$ f7 n3 K, `" {- K4 rifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)  I' v3 O6 H7 t% H: {! e
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]  |% e2 }# g$ z" H/ k# N- K. g
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]! e! ]# p: F$ z
]7 U5 I' }/ j( c
]
$ C$ {! I& ]! S9 P8 t) h: Nset global-proportion note" n' F! a) G# S
]
* j7 M' c% }6 o, D5 f! x( dend4 L: O* w. @8 }( }

# H' \1 e( V# _( y2 D1 |4 [to do-trade
& {$ T& u; o, V; ~: i, V: ~;;
这个过程实际上是给双方作出评价的过程
# o- E2 d6 M2 w  \set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价/ R1 K* r1 h  m$ e9 Y1 F" x
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
: S: H8 ~' I" ^0 Q+ f) B: Yset trade-record-current lput(timer) trade-record-current' G6 N8 r9 T' b8 o4 X* R
;;
评价时间
  I' j# z. u8 a+ r( M" {/ ?" kask myself [
: n4 x( h/ I$ e' J3 g$ _update-local-reputation
) K" N8 M7 n7 ?) o% H; ^. pset trade-record-current lput([local-reputation] of myself) trade-record-current
2 p2 q7 e' c) `. @, K2 P]% o- w, R& P8 A# Y
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself+ f$ T( I1 U6 y
;;
将此次交易的记录加入到trade-record-one& ~+ I+ L, u3 _
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)( ]! d' o, E8 Y, D- B0 O/ W
let note (item 2 trade-record-current )% P% y8 R5 t) A" O
set trade-record-current( D) Y3 A/ [+ Y: o! Y
(replace-item 2 trade-record-current (item 3 trade-record-current))
7 r3 U- l4 @3 i1 ~  d! ]* E
set trade-record-current
$ q* Q8 N* F4 u- [4 e2 W(replace-item 3 trade-record-current note)
0 g5 `3 @# a9 y6 Y3 G0 m( N! u; S+ G4 Z" s
7 B- ?2 @2 D* i% Z
ask customer [8 I9 _& D" G0 T/ r  B* h
update-local-reputation
5 M5 u/ E/ h% \5 @set trade-record-current
  U( J2 _7 O3 I(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
2 u8 l0 V! `% }& c  W& q
]
$ t9 C6 N/ x) o
3 e% H$ ^* h( H- k+ f: [  ^

& S* m2 q( L/ ]# X% Gset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer" i) v5 @( {4 U' ]0 l5 Y& l

+ }" c2 b3 \, z& z8 f  W# Lset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))7 @  F/ _4 K2 @- t/ h! |
;;
将此次交易的记录加入到customertrade-record-all8 G; W, D8 M' f& B7 y, j
end
+ o8 ]  X' j- v& F2 A+ f! a0 a/ s& t
. C! B; d: G3 O/ \8 ~* q! kto update-local-reputation
; C, j2 ~$ [/ ^/ Dset [trade-record-one-len] of myself length [trade-record-one] of myself
! D: J' L; g5 K3 v# E4 U$ U/ r2 l( c/ [" }8 {# {2 ?
& [- l' |, M% A/ ]" R
;;if [trade-record-one-len] of myself > 3
6 {8 W% e0 W# r1 F. v! D/ y! x4 @
update-neighbor-total
7 J( v& ^$ d% J' r" f5 b$ u6 `;;
更新邻居节点的数目,在此进行. i- l* z( l: i" R/ D
let i 34 V- n5 v2 c- w* t$ A' C7 B5 |9 l
let sum-time 0" }. F3 r9 e1 \: T3 a
while[i < [trade-record-one-len] of myself]
& p9 t" C" I* g7 K[
2 j  T' ?2 D0 {$ a) rset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
0 e' Q5 f2 f! ^' e$ [set i
. N0 L$ t  p) g4 X$ N# r5 K) y: E( i + 1)
, b( b3 Z5 T! ]) p& B" A1 o
]9 N9 k: q4 c9 [' P
let j 3
- Q* j) C' R* d. H% n& Rlet sum-money 03 n  G* x0 h' B! }
while[j < [trade-record-one-len] of myself]$ V( ~8 ]( G- o5 S
[% p* A' f: H, [5 @: _1 m7 ]6 J
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)& b) T, q& a- j! ?) |- n0 g7 s
set j
9 _6 |, U3 D) \( ~- ]4 l( j + 1)

+ K" w" C: ]/ w8 m0 f* e]6 H0 p. g8 d1 H) Z1 Q  D
let k 3
- Y( ?# _( P: |( k( R9 Slet power 06 L0 b' r/ S% e$ s4 Z
let local 0
+ I$ P$ S9 c6 A. swhile [k <[trade-record-one-len] of myself]
9 u) y% H+ i% {3 e& d2 K3 S. J[. u0 P2 b4 d$ `
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$ L- a: A0 J6 [2 Y( C
set k (k + 1)/ D6 s3 D5 v7 ?! C
]$ E1 N9 ~5 [# p6 b8 J
set [local-reputation] of myself (local)3 I! P$ r3 Q) ?2 ~$ s. Q
end
7 J: `. o" l# v1 r& g$ m3 x$ ~5 I% s7 b% S. l
to update-neighbor-total2 w' O0 y* f+ d4 f5 q

3 E+ N7 \# q0 eif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ], v. g$ X# q/ s9 h! k2 Z$ j, k

. x9 F8 ~4 A$ f% i) t8 E5 _
+ ?9 v4 Q( L% z5 s9 U+ H
end0 K% H3 a4 Q7 [: [( o0 p( k
* H% |- }/ d: i4 B2 C
to update-credibility-ijl
+ _; s# J  h% f& F" V" G: _0 W8 r
5 E# C7 {& g2 t, ~+ k;;
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。) x! E/ y* q0 F. b# y: \# H
let l 0% S2 d  v. L; b& i8 P
while[ l < people ]+ S4 Z! u, W3 I6 U; P) v
;;
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
& v3 Z' |8 f5 a# w( H[  O1 `! ^7 s9 x0 V
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)$ G! L0 ^) W  B7 p. N! H
if (trade-record-one-j-l-len > 3)9 l! I: V+ X- w) x6 Z
[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
* C  G; z% |% T1 hlet i 3, e" \( E' M$ X, g
let sum-time 0
6 ~, J* B+ p' u# Ywhile[i < trade-record-one-len]
7 Q: F6 p% {7 G1 E0 ?  A6 I; b[
, K/ U: b# j7 o; j1 l5 mset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
% W$ L0 \8 b, M: q0 w  `set i
( d- w8 }4 ]9 f! M& M1 C( i + 1)
8 `  _0 R3 a% s$ m9 M6 D% O
]5 r8 \9 C) W' w4 I) \) T
let credibility-i-j-l 0
5 ^* `, u8 b; ?# x- U9 ?;;i
评价(jjl的评价)
& x& d* p1 H. D% {8 ilet j 3% L, B3 B2 x  e" g$ S7 B, |( _$ w4 R$ N
let k 4
! j2 s6 e# w; h. C( F( m) L) V$ Qwhile[j < trade-record-one-len]
+ V3 q4 |" C  ]  i[; W$ u1 D5 e8 g% D8 a/ w' E& d& s
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& t: O& n! \7 ~, O( {) l- o
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)1 `3 S8 N. _* d$ h
set j  z, j" U  t3 @
( j + 1)

( m5 z$ K1 i. N]
  l6 g. J5 ?/ p7 m" t* yset [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 ))
, `9 f2 X" N; I" I4 Z0 V" ~2 S$ |; [5 X& ]
' c9 {$ m* A1 ]/ f
( p1 D* L* |! B8 B' N8 b
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
+ e  I- E. J( _/ @* z;;
及时更新il的评价质量的评价7 P* U$ y6 n* M; {% ]
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]  Y$ Q7 X; X3 X: Z
set l (l + 1)5 G0 w- x  ?! o* b' L" Y
]
( w' o# z3 {0 X3 ~end
8 \1 S  O0 F- b, m3 P
6 f% s+ l9 A( [3 S- ~& Dto update-credibility-list
$ M! y( A# ~  j, {1 zlet i 0
  b9 I9 a+ n' W7 v; F9 ]' Rwhile[i < people]
4 |% O) u; y* t: d5 U[
* C! Z( ]; W: k" M! |% N, }let j 0
+ G- y% [* z: k6 o7 ]let note 0- ~8 s5 e, d& V8 e
let k 0- q) W% H: L& l& \# l
;;
计作出过评价的邻居节点的数目
2 ]9 v9 k. ]$ `; g8 i* kwhile[j < people]
( D2 W/ @8 r! D# Y[
# x" W! W; X/ Y/ Y( K. }" Z" aif (item j( [credibility] of turtle (i + 1)) != -1)
1 f5 B+ f1 J% m0 k0 C% H! j;;
判断是否给本turtle的评价质量做出过评价的节点  ?, {! t, s& b) J: R
[set note (note + item j ([credibility]of turtle (i + 1)))0 a. e! z7 u! f, S7 K: o+ R
;;*(exp (-(people - 2)))/(people - 2))]

' L9 N8 P: w, E, v  e* ?( ^" q- |set k (k + 1)( {% ^9 a( y" X" m$ v2 }+ M+ E
]
+ Q7 @) [2 Q2 T3 U. F9 C$ }set j (j + 1)
+ i: W1 O, u+ J1 U8 n]
1 F5 f& M1 o' {! T; j5 J, Lset note (note *(exp (- (1 / k)))/ k)
4 S5 J2 N: K6 w$ x4 _( eset credibility-list (replace-item i credibility-list note)
. Y) _: q0 |" R$ r" [4 uset i (i + 1)5 p$ ~& [) @4 T7 Y3 y$ r
]
& f3 C. d* G6 i2 `% Zend
$ @* j4 N* {- l. ?( m; \) |0 N  G  B3 O: \
to update-global-reputation-list
9 g9 j+ {, c. D1 \+ J- Alet j 08 K! e' Q, s9 _5 \6 X2 J
while[j < people]1 @) \0 E( Y- v* y) G
[2 c! M, Q$ E0 e$ Y
let new 0
6 W) n& j& p" Z- G7 a! R4 D% o;;
暂存新的一个全局声誉
, \  Z+ y8 z  R' vlet i 0+ r; Q* I" Q0 @( Z  B9 B8 }7 s
let sum-money 0: U& Y1 ~8 F. c2 z
let credibility-money 0
) y' Z% J. ?0 \2 Y) Zwhile [i < people]
( G- Y, ]; J% P5 c[8 F; G, t  t- e8 ~! I8 \9 j
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
  L# Y3 q3 c0 _6 J' B  [* M1 ^set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
: N! l/ ^4 Q3 X7 a0 K; i1 Zset i (i + 1)
" e. v# ]$ [& r# Q( h], _2 ?% U- Y1 e# R, e4 w. g# c( g
let k 0
! `/ D. u8 A: `2 e* i- \let new1 0
3 {9 |1 T) L" Awhile [k < people]
3 J; q2 W1 v3 M& f' t+ C[* A! U' T, ^; f3 n* C: s5 j8 ^$ w
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)
6 N0 c3 V1 B* N: `5 m) xset k (k + 1)3 N: b5 I, r6 q: e$ o) T
]5 |1 f* H: B* x% g5 h! j7 q9 J, h7 f
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
7 L3 I% s* Q( L$ ?1 W- `; _" Aset global-reputation-list (replace-item j global-reputation-list new)- P9 a3 L: _9 ?6 F
set j (j + 1)
+ {/ ^* E& ~" v+ Y]8 g& U+ C' Y0 F5 j" \
end0 P' W/ _% w  C! a  p7 x

" _! u: Q. Q* L2 }, b5 e, F6 Y
3 }4 {6 N# ~4 A5 M! [" c9 ]
to get-color
# y6 W, U5 v' Y$ u0 l8 I; l: {$ a2 N7 D1 S6 P$ N* L* I
set color blue

4 @) }& G3 Q& G$ }1 Y* o" U2 W- Xend
7 y; a) K! Q% i0 j9 j% E' K' M4 n; p) Y
to poll-class
, {$ ?0 @3 P. t, |2 v2 Rend% {4 A% t, |& {% F9 k. F5 K  M
! e+ G  `% a! d
to setup-plot1
& L* y2 D" j( P  H2 {' r( P
" L& F: Z- M: G+ ?set-current-plot "Trends-of-Local-reputation"

( E1 N6 V" E, A' \! {. {5 t4 e1 p' A. A+ ?/ x
set-plot-x-range 0 xmax
4 n: o; A! i3 m0 N. D1 _
: m  s2 Q3 z; u- y+ u  `  I( \! `: U( D
set-plot-y-range 0.0 ymax

' k' [& U1 x0 ^% [" S# T" _& m0 }end7 M2 V; k9 x3 P1 |8 e

7 M) Y% m2 L, `  u" U! Pto setup-plot2& X. c. e7 _8 Y( G1 _8 b9 n* H

  s' D6 O" d) o# {set-current-plot "Trends-of-global-reputation"
! C% P. h6 j, o+ ^# W3 {! ^
" w! O# [: s  G  I& V
set-plot-x-range 0 xmax

! O* h' g0 b- |
% |& i! y9 _! t9 z% n# Zset-plot-y-range 0.0 ymax
2 i' `( v5 }. r2 N/ v& e
end
' L1 S) E) B) Z* G+ E, O$ ^  z1 G8 I. F
to setup-plot3# [" S7 u& i& x" j. |1 f
) \! [' y- z' Y  h) _
set-current-plot "Trends-of-credibility"

; z2 d3 k, W8 P  s; v4 I+ x3 }# Z& q3 j9 `; d
set-plot-x-range 0 xmax

* ^8 k; h- r6 K5 U3 D2 h3 H) h0 o# A) `
set-plot-y-range 0.0 ymax

8 b  a" T, S9 i3 }. H* cend
0 D5 B& W; M" j0 d5 {3 t/ F# y; k) v" l, v; I0 d
to do-plots
- m" p9 h' e3 P2 Bset-current-plot "Trends-of-Local-reputation"
3 a. C: g3 i5 N8 Rset-current-plot-pen "Honest service"
$ Z. ^. ]# E7 H  nend
: _* H+ a$ c* h; ~
6 a2 |3 u7 d6 F# q* r& X[ 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.
1 y. Y* f4 K  z9 g" b
7 K1 C4 g- \, c) ~4 G% r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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