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楼主 |
发表于 2008-3-18 13:10:54
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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
t2 ^8 C( c: U) d3 nglobals[( w. g+ {5 N- V
xmax$ m9 w+ ~, f. c
ymax
8 z+ P4 Y: R, z Hglobal-reputation-list
6 Q$ e: s D+ P+ e: V U( p
. T7 E8 v, u" B9 Y; ?+ f+ {;;每一个turtle的全局声誉都存在此LIST中
0 O5 s* _# @! ]2 {* _credibility-list0 B; |9 H: [3 Z$ Z. |
;;每一个turtle的评价可信度7 S) _8 x! @& ], }
honest-service
( b" ^. S+ G: m8 u2 t0 uunhonest-service
/ @' e- \! h$ n9 a- r3 joscillation u" l& T* {8 n9 f% T5 }
rand-dynamic! I) L, b6 m+ Z$ i3 h
]' I# `0 J, X1 U# m$ S
; U5 v2 b1 B1 A3 w- q, ^turtles-own[' B* i7 b4 b( ^8 S( ^: I: n3 |, e/ W! c
trade-record-all% O O ` C3 l) }( _
;;a list of lists,由trade-record-one组成- N( ]8 z4 t0 B( A* w. z
trade-record-one8 y. s! K" E7 G5 u. V
;;list,trade-record-all 中的一个list,作为暂存用,记录两个turtles的交易记录
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0 ^ \' ^4 S0 i;;[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]]
$ v& @8 [1 o2 K( X( V$ E9 g* Ctrade-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]
+ [. U# N' _% x' D$ ^; P. bcredibility-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+ } }. ^" k- G, J8 ^' x4 v
neighbor-total7 M" b/ V9 g1 C9 K
;;记录该turtle的邻居节点的数目
8 i# n+ I" }& Btrade-time# Y8 h& N% j5 ~: L3 H& b
;;当前发生交易的turtle的交易时间
$ H) ^; h# t, o0 u( V' M2 t; Bappraise-give4 b9 j, U7 T/ ^5 Y1 v! S- c; S
;;当前发生交易时给出的评价8 s3 Q* r! o- Z9 U$ u4 ]( M v
appraise-receive5 s# \; E* U# G1 w4 u
;;当前发生交易时收到的评价
@( O6 D$ F0 i# \6 P2 Lappraise-time8 j- Q' c2 O- W: s; B2 j5 n
;;当前发生交易时的评价时间6 i: f" r- c/ j; e) V" N
local-reputation-now;;此次交易后相对于对方turtle的局部声誉+ m" ?$ g' s4 ?8 J1 w2 u' M2 [
trade-times-total: x9 {" Z7 Z; v
;;与当前turtle的交易总次数
- K; O; ]( w7 n" d1 o/ Strade-money-total0 A2 H! j( ^; p$ U0 j) V1 f1 h
;;与当前turtle的交易总金额
9 `9 `. |# F: k/ C9 r" Plocal-reputation! I @6 q4 P( Z& \1 v
global-reputation
8 r% D7 L8 _1 m# C0 X3 ]2 ?credibility* @9 ? t* C/ Y+ f
;;评价可信度,每次交易后都需要更新9 t. u9 s* U* m& t9 r7 k* ~" K% X
credibility-all d5 i; C0 `! `* O- ]* c4 R
;;a list of lists,由credibility-one组成。[[1对j的评价质量的评价][2对j的评价质量的评价]……[i对j的评价质量的评价]……],其中一共有people项,根据
j7 `$ X4 d- w- U; G+ Y3 ^' g: `6 F4 g% M' ^) w; x8 S! [$ f9 O- h2 J
;;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/ Z1 V8 [( X/ o1 r
credibility-one
3 Q4 b$ @( U" x9 W;;a list [i对j给1的评价的质量评价,i对j给2的评价的质量评价……],其中一共有people项' g. ]4 O0 l% T' x7 V4 s; Y6 K0 S
global-proportion
$ `# M# C+ x. G4 F- I3 Jcustomer2 R1 U$ V, j) ]# }; F( n
customer-no
/ e$ w3 |* b7 w+ Z+ rtrust-ok
x( Q0 o( C$ p" D& e% q, O, Otrade-record-one-len;;trade-record-one的长度
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+ {" ^0 E. q! u9 Y0 a1 U" ?% U;;setup procedure
3 \4 @; d! R) f. V
' R! o- M/ |' X# Jto setup- ~9 P2 @+ C f3 w$ X- b2 j
, R' c. s# n$ c/ L
ca
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initialize-settings
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crt people [setup-turtles]0 \6 K! h0 N1 h, V
& {+ M- L$ P) K3 s5 J9 C' V% @reset-timer% y; U% u$ h# ]
3 @5 Q9 Z0 I6 I5 r( d+ |( l
poll-class
/ v% i' {# {8 e9 i4 ^/ }# w- d: R( E
setup-plots
) ?( w9 k" l9 ?& c2 Q6 ` ]1 W* }0 q q
do-plots
) z6 C- b" _; ^3 ^! q+ wend
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to initialize-settings
8 g' W8 u( ^5 D1 N- c7 d( k J# w5 x! P$ A' h. w' s6 P
set global-reputation-list []7 ]$ w0 ^; G8 ]
* m6 K- @, e) ]/ d: U
set credibility-list n-values people [0.5]
$ |5 N& V# y. f! _2 J! j* c
& p/ s$ J& A% `3 U9 }% e D: Bset honest-service 0
: i D: j& s7 v# C. k" ^+ D; [+ h5 [4 H% E
set unhonest-service 0 Y! t1 s1 h- W
# s" g: q/ u) E8 Hset oscillation 03 n7 E) t* F! U9 F4 B8 j$ f0 I2 v
: M6 U# X% u1 |9 O2 P) A5 G/ ?set rand-dynamic 0
' F! Z4 L: o) ^% A9 G9 Lend
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to setup-turtles
, |5 s u7 C \) i& f& Kset shape "person"
: D7 }/ [/ c3 `" l1 W* Fsetxy random-xcor random-ycor
8 ^' p# y6 d: k, Yset trade-record-one []
7 I) i0 x1 f# M4 h- T4 h# y3 `8 h. b5 ^! \1 h3 R* f& u4 ~
set trade-record-all n-values people [(list (? + 1) 0 0)]
- f( z$ ?& v' g: u2 b; M
7 Z& p3 p8 R; m) m- M8 t3 bset trade-record-current []
4 g- A# t8 B: j) Jset credibility-receive []3 i7 p2 a. E+ t2 n3 \; b
set local-reputation 0.58 H8 H/ y! ]9 W9 ?6 E9 Q
set neighbor-total 0
+ k' V, @" k/ Iset trade-times-total 0
. Y+ V9 H1 Y1 aset trade-money-total 0
9 Q8 v/ r' Q. E9 e4 |# l U) Oset customer nobody# Y) L9 f4 g- i+ A& M' B
set credibility-all n-values people [creat-credibility]" N$ S/ f* x* a9 A9 b j
set credibility n-values people [-1]
Y2 g( B, @( t1 N$ _: _$ j+ tget-color4 U2 m9 ^2 X" S, Q& l
j( @' y7 l! G/ V$ u' e& Wend
, C; Q7 P2 t+ O" e
c1 O. \+ p$ |2 x+ ?7 bto-report creat-credibility8 N( h4 G/ q% k' W0 W i) U. ]
report n-values people [0.5]. w! O) C: K, c" e2 h2 a4 l
end( j7 a1 l! \1 A: o
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to setup-plots
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set xmax 30
4 ?# B- m* c+ g; ~. {" t# a! \. {- h X2 Y4 v5 m. U
set ymax 1.0' [* G3 a3 e" d2 F. s! U
( H. l5 r5 X0 |9 I, a- hclear-all-plots( f. z, I( O5 T3 ~( C' {
+ d) i* L7 [% \2 \( Dsetup-plot1
1 X( w8 \- f9 R, B
: D1 z. `9 [5 h* e/ L: v1 X. \setup-plot28 J; r6 o* k$ l; r
0 U9 X9 p' w+ v3 G8 ]
setup-plot32 o# [5 T- }+ g; }7 K, [! J
end
" G7 b# r" O* o3 \5 _1 u9 [* o% i, e' Q5 ]2 D% B
;;run time procedures$ l! P" h: D6 m4 E( j. L9 m! F
4 |; }. {- @% Q; O8 H
to go
+ l* k2 M3 q5 _2 v9 d( A1 v1 {3 H) Y% Y) B9 h/ N
ask turtles [do-business]
' c# d5 [0 D) C1 g2 C# f0 ]6 Hend
- e* V3 t% Y6 ?/ c6 p; r1 j; Q8 D# b4 t1 c7 n2 Z) m$ i, H
to do-business $ Z7 s$ d2 p+ F5 U! W* D }* o
6 c$ b# W) W8 ?- P1 T
! N q, B; e0 t1 Z+ y8 i
rt random 3600 t- c, @3 Z$ I, n6 O+ w
6 w/ {6 V& p( f( Gfd 1' Q! \& l9 e+ A
. f4 u6 p& g# z7 v( [! |6 Uifelse(other turtles-here != nobody)[
6 m, t" ]& J4 `" j k" o- Z
. M* ]* ?8 k% }- V* }set customer one-of other turtles-here7 Q2 k* j6 i- c! E. Y4 O
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;; set [customer] of customer myself
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set [trade-record-one] of self item (([who] of customer) - 1)( U9 I& t# c. ?5 N- p
[trade-record-all]of self
: m. ?* s9 \1 q;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
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set [trade-record-one] of customer item (([who] of self) - 1)
% e8 O" P, F3 F[trade-record-all]of customer; `% \# O: x7 ^! b2 L; j
$ `3 Z$ L8 l( V; V: {+ L
set [trade-record-one-len] of self length [trade-record-one] of self
+ f# O4 G! S* X- B- r. v+ i) i7 u0 ]2 l- T0 q
set trade-record-current( list (timer) (random money-upper-limit))* d, `, E* i6 d, E. ?+ `0 _
. v2 K; B! O& f: a: Sask self [do-trust]5 z% D5 m5 ~- a7 v1 _. D& ]: L
;;先求i对j的信任度
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- z) `# G- Q5 G( J+ X& G. @: B! {if ([trust-ok] of self)
4 w) y2 z* }' C6 t) U;;根据i对j的信任度来决定是否与j进行交易[
$ W ]9 m [; L4 d. p( jask customer [do-trust] if ([trust-ok] of customer);;这里可能会用到myself
5 F$ i( P9 Q7 l! }
2 d2 f( j; `1 J% |5 K[+ S/ u0 W- z- Q) q% _# Q* j
{( w! |# Z: h% c2 h A7 v
do-trade2 P- m4 F' [3 v: z9 [
* i! I; t2 l# c# ]6 c. p
update-credibility-ijl
; R8 h% Z0 N) t$ q" I1 N/ M v+ p' [
update-credibility-list
5 g0 C! S' Z* C) ]% A" r& O( i7 i8 x5 F7 |: X
/ o: j7 z; n6 T! x' f6 |
update-global-reputation-list9 l0 {! V. J$ U- I A! z: J# v z
; z+ ?% @ u' u i+ W1 w. opoll-class
- M4 ?6 F" `. a$ w
: Q0 ?6 n! t( dget-color0 R. m `# c, a( p
! P! Y6 d" \+ d6 F3 K
]]
; ^! N# i+ u$ Z' a# t; U3 R2 J) J5 [: H* ^
# Z6 L+ b0 J5 U+ I;;如果所得的信任度满足条件,则进行交易
, H1 l+ T% T) X. c+ b" y# t+ }7 t+ m$ J* j- C2 J
[$ {- }+ r# d( b* s
* r& e% [4 _2 ]2 }9 Q
rt random 360" O) j4 }) t$ J- k' V- |
c7 O, k; y7 P7 ifd 1: W- a6 P) V0 ?& f) {) O/ G
2 d, q* _% G4 B" v: `( ?, e]$ B$ i5 r0 M5 Q7 V- |7 H# x% H
, C! x) M* P) x2 t0 lend
4 K: p4 U3 Q; e4 z) X5 F
, v$ G1 \3 r+ Mto do-trust
- p7 p5 X( e" K" b* v3 G1 Oset trust-ok False
E# u0 V& s8 k: M& d3 M* Y0 { o0 j2 j) R
1 R) C; k5 Q8 G4 U+ n9 k& @( rlet max-trade-times 09 j/ y u G5 V, E4 `9 K
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]/ O9 h: W& ?! H2 D
let max-trade-money 0
: g1 O( q5 N% R( S X- J# w9 Nforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
* [' c& t# W% v) I- l! p% Hlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
, |& y3 r; D {8 e' }. y+ [+ C& H6 Q9 K8 q" S7 b# R: r' P6 N7 V
+ X" U2 s' V9 S$ o/ K8 t6 ~get-global-proportion
) ]1 G5 T v- ]- g& ~3 P* F0 f a0 ?let trust-value
3 N9 h% {. L7 t! I5 f8 Vlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
6 K: M$ ]5 @5 g" O1 E. Lif(trust-value > trade-trust-value)
1 x& F4 A3 Y$ U7 ~0 E0 ^# P, |; d0 F$ Q[set trust-ok true]; O" O% u/ O2 e/ e
end+ ~9 ]4 W" n( F9 o
; X; \0 S$ L& F) h- A, Vto get-global-proportion
( q( b9 |: i( j, _0 @1 wifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3), _% Q3 c* v% p6 U
[set global-proportion 0]# M/ l1 K6 F$ }( Y0 a2 H+ o
[let i 0: ?& y9 j. u y1 @; c) W
let sum-money 0
/ x6 |) i6 D- k" ]while[ i < people]
. Q+ d2 X1 g- J5 F! s$ H[
* P$ ^; t) j& R2 x }if( length (item i& G+ M. G8 m9 |# X$ U
[trade-record-all] of customer) > 3 )2 I/ M/ M! R! g# _% D- L, \
[3 }' e5 |; T' O4 B" F2 T& c# N/ ?2 b
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
4 V; x$ K* U! ]3 x! M9 [' Y]
( W7 o6 |7 \ o$ Q]6 `3 m: b( @) o$ a% Y6 D! }& }. d
let j 0( y0 ~ i' D1 a7 V4 E( a! j
let note 0! z+ U- |/ K1 V
while[ j < people]7 C8 ?# n! ?- A" t; G# Q- @
[
+ G( j# s# U2 F- Vif( length (item i0 q( l. T( I3 u2 V- |, q. }0 `, i
[trade-record-all] of customer) > 3 ), y7 ?& B8 k6 |! H i
[
^2 z6 }3 H( B) ^2 G9 i4 Vifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
9 |; E" X" t/ O, D$ z+ `' L3 a[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]2 i; o/ r. M" T5 \4 V. v
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]# K! k/ k/ A5 X$ N+ ~! x# {
]
- [8 i7 @* D. k]& `/ b( {: q6 q. g: s. J
set global-proportion note! Q' [" C5 `3 N% p7 _
]
& R3 j# h$ \# k0 k4 X7 \" c$ d# [end1 M& D6 ?' j; o+ {& p) Q
1 C- a( T% Z# pto do-trade
9 V& H# z- X: S; @) a+ M3 l2 };;这个过程实际上是给双方作出评价的过程! A* v2 x/ V. [* ]$ V+ ?' }, E
set trade-record-current lput( random-float 1) trade-record-current ;;本turtle 得到的评价
" G$ y8 l# m7 T) ]7 a" D' sset trade-record-current lput( random-float 1) trade-record-current ;;本turtle 给出的评价+ F6 x, e1 G& s4 `
set trade-record-current lput(timer) trade-record-current! ^$ l$ g" j. r; w6 J& x( [
;;评价时间8 L' [/ `2 @! m( ~( W' u
ask myself [
: A) |7 ^3 ]" V+ ]9 h+ F) hupdate-local-reputation
) w7 _! V( {7 }9 @$ _set trade-record-current lput([local-reputation] of myself) trade-record-current, ?. R9 T/ M1 p$ C3 W
]( {- j& l5 `/ R8 T* B
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
( W8 H7 Q/ S# r;;将此次交易的记录加入到trade-record-one中. P* G" u' L- y; `
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
& A3 d( F1 |9 l; `0 t1 k5 L! E& ulet note (item 2 trade-record-current )
: B9 z X% q' Vset trade-record-current) Q9 g& f9 k5 c$ W. d# q O; k
(replace-item 2 trade-record-current (item 3 trade-record-current))
. ^7 s( @6 U- q3 W9 x( A" aset trade-record-current& U, e. W" L. _, Z. F
(replace-item 3 trade-record-current note)
' ?( H$ m4 U) ?% S' d6 \; m0 v' ?! ?' O% c9 B/ a! |
5 J3 u( O# l2 K- g- U# T3 ^ask customer [* n* b0 z! O( i7 k8 c, [8 L! _9 ` J0 C5 g
update-local-reputation
4 a( @' ^7 {& ]$ c/ `; lset trade-record-current
' M& J- M8 \" J, i; c(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
9 d+ A; Q4 t$ I]4 A' G( n, i1 J& {
: L9 n( B+ U1 f" A9 [6 [
: A( R( a! e1 M1 L) c8 i
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer. J& n0 e9 x0 e# ~% `
2 s5 N& w- G1 S1 f1 ]
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))1 l" T/ [9 ?3 l* S
;;将此次交易的记录加入到customer的trade-record-all中/ \" T8 `$ s) ?2 N! k
end
) O- b! [6 ~8 v4 v2 d; `: `6 m" C) {: V# x% k& r/ b1 m- s3 z, o
to update-local-reputation, u: V, Y' I$ D6 K- e* Q
set [trade-record-one-len] of myself length [trade-record-one] of myself, f' e( C' v8 q5 L' l5 J: s# x
9 V2 g) S- n" L' o, ~) X
3 B. @+ s9 v" a' Y( g9 Z/ P: };;if [trade-record-one-len] of myself > 3
. G+ Q! G' q( ]; V. m1 v5 J! g3 F6 z8 l3 |update-neighbor-total
* M( \7 W; a1 u, w;;更新邻居节点的数目,在此进行
' l" a: ]' H [: @0 k2 E" G8 ulet i 3, x Q! p2 R" ?! Q7 t2 @' a) R
let sum-time 0. D, W ?" f# w! P" r M2 {
while[i < [trade-record-one-len] of myself]. e$ Y" v2 K* ~6 a# X1 T: k" m1 H
[6 u$ {/ e% n, a( N. Q& J! t
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ). N9 c- d: r8 m% U# H
set i+ @( q$ B1 O" ?; \
( i + 1)1 M4 i/ @9 Q, B) n6 D! H2 Z
]* v( a4 q4 Q3 _
let j 3
) z# f& c, A) [. F1 g5 a- V+ b- ^$ Nlet sum-money 0
, F8 b E+ t$ k- A2 K4 f" ]while[j < [trade-record-one-len] of myself]
) T+ f% d5 }# T: a1 Y- U! D[6 S+ i( K1 V6 l) 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)9 U. J8 b) e; H0 n3 S$ u
set j
x- u! t8 ^5 Q e6 N( j + 1)4 |8 G/ a+ P( N- f) c7 h
]- E8 d0 j4 g& v0 |0 d. K+ E
let k 3
7 ?5 p1 j3 n ]: Jlet power 0
: B* x- t3 _7 J+ o- I( P* [% O; u/ ]let local 0
( E5 R9 w# C, T; s$ v! A# ?while [k <[trade-record-one-len] of myself]
0 U+ G. o% T. Q# P V9 R# U[
( O, }/ V5 H+ H1 sset 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)
8 h3 q/ ^8 ^' L; w, j7 a" Eset k (k + 1)
; S7 t4 o0 J$ V3 P]
9 n7 c3 ]* |& C4 i/ a" xset [local-reputation] of myself (local)# m+ V: o/ I( M5 U+ Z) U
end
8 H8 v5 z6 [8 K5 b2 E; H$ H" H/ w- @# Z% f+ r
to update-neighbor-total% h* u% k& O7 B. ~# P, V) T: M
# M, H$ u% i3 g) L4 @if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ] T7 S( X3 I Y7 I
8 |2 N4 ?9 ^0 M$ u9 B
) G. C( T" \8 d+ n0 `0 K6 |4 lend1 l9 `) n; `5 z4 y M- i4 A% g& L
4 S" w2 `* G3 i: E: T5 [4 b% H
to update-credibility-ijl 6 z. P/ w" v) A3 C7 N
8 g2 l! J5 v* [;;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。
, S' U5 o6 j$ d& P+ R. |1 Alet l 0: D, Q+ j" S4 v; C! y% J4 T
while[ l < people ]
& e1 u/ g9 F" F7 c;;对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% U" p U6 g7 |' m3 }% c
[
9 P* V5 I# |& F9 W7 M6 T$ ylet trade-record-one-j-l-len length item l ([trade-record-all] of customer)- E4 E. |$ K7 F: g, f0 `) @
if (trade-record-one-j-l-len > 3)
' ^$ e1 U: p* C" W1 w[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l的trade-record-one' l/ u: K$ j) @& r$ e& H0 P
let i 3
& [5 l/ F1 c" E+ V$ a2 T' Jlet sum-time 0/ s9 [, U) B& B1 w: F1 W0 |
while[i < trade-record-one-len]
/ s1 }! {5 p& E- r6 w[
% q' v. c( n. R$ u+ Xset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
) l" X! R6 [0 b( ^set i$ {/ V8 n3 C. h+ F4 `! y' l
( i + 1)& T w. ]2 H% P; K7 t
]$ h: T( j' F5 [ f! a
let credibility-i-j-l 0
B9 p) `: M% D6 J, ~ w+ ];;i评价(j对jl的评价)9 E! C# W5 A' @, C1 y, f
let j 3. [1 Y9 f6 H6 v$ e+ u' r, Z
let k 4
1 c% W) l7 z& t. g3 k2 l( vwhile[j < trade-record-one-len]
( S# i! x) O8 p$ g C[
$ g* g0 Q" c) A. Q" n; G6 ?, H/ i( iwhile [((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i第k次给l评价的这一时刻,l相对于j的局部声誉
; K' t+ l2 }8 d4 Z% pset 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)5 X7 j8 B1 g: p' }6 o
set j$ y! F# m" Q& |+ L& L9 a' Z0 F+ u* r: h
( j + 1)
7 F! |- Q" j0 q2 W- k! A]4 Z0 b- M0 J- }2 ~- w0 |2 f( n
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 ))( u l9 e! m4 ?$ [
# E b1 v/ J3 k: H# n# W' s. \
`3 q5 J! Q3 u7 y H+ w/ h+ Qlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))1 D: l) J7 T& i* {% \
;;及时更新i对l的评价质量的评价
0 U" S( {9 ^9 q( J0 Uset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
) r' K/ b) r) S( ~% n1 \set l (l + 1)
d% G% j, V& @8 T( S- K]- a+ a* N9 \9 r F! r% E
end
7 R. R4 q' J8 S7 ]3 ?+ J$ V$ m" u5 i* Y6 E
to update-credibility-list% j' t1 |+ h3 Y9 f4 u; C
let i 0
0 k5 D% o; ?( C4 r" A: R+ ]while[i < people]4 Y' D( {1 Q* N3 E0 G$ A
[4 l0 T# j" i' O. V$ O+ e% t6 N
let j 05 z2 t' o# O* e7 J, z
let note 0
) D9 O& X: O; [; D9 a1 Q4 c: Zlet k 0
4 d' j$ p! Y% |8 h' Y9 y6 X;;计作出过评价的邻居节点的数目
- r0 ]+ i& y* z$ Qwhile[j < people]' c- U1 R7 Q7 \9 z
[ M" v: r+ J5 A- W7 y! v" g+ b
if (item j( [credibility] of turtle (i + 1)) != -1)
7 o) F* ]! G. X7 p/ V% X4 ~;;判断是否给本turtle的评价质量做出过评价的节点) S0 {; u9 O1 u3 V
[set note (note + item j ([credibility]of turtle (i + 1)))
5 P2 H5 M5 N2 u6 N# f9 I;;*(exp (-(people - 2)))/(people - 2))]. A5 o. k- _/ s$ t/ N$ A
set k (k + 1)
0 r, y& y2 p/ x+ B) [* K% l" a]
( n) J, D& q$ V, ^* \set j (j + 1)( k, {" x0 a! h: r* U
]& \* E* I- C d( R( e; I3 ^2 r
set note (note *(exp (- (1 / k)))/ k)
9 q7 ^- O& k& e- b) {! G8 Yset credibility-list (replace-item i credibility-list note)
. I* U6 S( v5 u( E& iset i (i + 1)0 v1 J- Q. a! F& u2 K! E; @; V$ m
]
. |/ i) m% ]& r) } ?6 \end
' ~8 g/ S. b J; w9 x5 `' n" p; e# i$ T& a9 M9 g H0 U
to update-global-reputation-list
6 k* \. ~; g* ]let j 0
1 ?, D. M n# `/ x! l3 \: o3 Mwhile[j < people]
* A& }1 F, T6 v9 W) m8 c7 G[9 R! r/ `2 I, U6 h
let new 0
& E3 }5 P4 L8 A0 k7 j& Q5 t6 V' L;;暂存新的一个全局声誉5 g8 X# o! x6 H- |: x& w/ I
let i 0
. W, Y t1 m; W+ }7 u& \let sum-money 0
4 c$ d4 y0 J* N/ llet credibility-money 0: b7 i: ?3 J! U
while [i < people]
, h5 z& @; D8 t! Z+ W$ |/ }[
4 q- W3 @$ d& r1 i/ f+ B: T9 J+ {set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))" D9 K6 k7 ~6 r W6 X9 k7 I
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)). Y' k P$ e$ x
set i (i + 1)
8 t; | c r+ X4 v6 F]$ U' l# v5 o. b& L) V
let k 0+ P5 @1 A- g! P2 F r6 }
let new1 0
9 l) h& l7 W, Z8 ^while [k < people]0 k+ _" @6 t2 b d& e- F" Z; q
[5 Y# D5 G) @! `3 g0 u
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)4 W; u% A/ Q: S: {* E
set k (k + 1)7 O, @, U4 w' d+ B" |, l
]4 H, Q3 O8 u. r( H
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
- A1 B/ v2 k7 Sset global-reputation-list (replace-item j global-reputation-list new)
! q; Y& H* X% o8 b1 j! _set j (j + 1)
: @! J( B3 e; j5 W]
- |' J) r9 V+ Y" d0 R" s0 Gend
' @& t4 X% s4 p u2 z$ w0 r# w# k' _
4 F( I6 a4 _" k4 f3 m' K. O
" `! `/ j- V& a! b" X5 z4 v+ I6 S* F! D7 x
to get-color4 {- d- G& F: i
9 C4 n1 y6 C# _0 |8 I" i3 u lset color blue
) Y. S7 C; a/ X. \end8 r9 \% j! P' l# {9 v$ _
+ E n% t/ d7 W/ o$ v N) nto poll-class
k0 c% S5 E0 t& s- iend, A4 D( ? m% a2 y* L" Z x- _: t
% w: u* M8 }) |' @1 ^to setup-plot12 T5 x3 r7 W3 b# Y! x! v7 U7 k
9 Q$ p, ]! C2 r, V
set-current-plot "Trends-of-Local-reputation"2 H; B1 w; [- S8 G. P; b
& x+ ]! B5 ?" h
set-plot-x-range 0 xmax
; m2 Q l {9 J: Q5 v7 L" \$ j2 g4 R- y- ~; r/ J* X
set-plot-y-range 0.0 ymax8 C3 H: Q: V( s; O
end
: ]" H" G( O+ _$ P' e% s6 H9 }6 _
: n8 F) _) U9 q/ H" f5 Eto setup-plot2
: u* I6 p9 V0 ~! T4 U
8 Y3 G2 i1 h) X1 D6 U% R" B/ mset-current-plot "Trends-of-global-reputation"
# N) b" W/ U3 r6 @1 e) M
# c! y! ^8 ^9 D& g _set-plot-x-range 0 xmax
9 S: S7 U6 I7 x% g P( T2 _) L5 Y, k% @1 j2 W: e, Y
set-plot-y-range 0.0 ymax, w4 r2 i4 O- O
end' O6 q3 \4 d6 s: r# h& {# O
! A9 {6 o' M2 ~+ H! D. t( R! k6 `to setup-plot3; M. c; l, A& Q* W3 b- V
! v) ^2 ^$ K. O. `
set-current-plot "Trends-of-credibility"8 P% |+ w9 ]6 j! w# R
1 A2 \& X- y- l
set-plot-x-range 0 xmax
9 |' m( u2 [1 I2 g; {( z3 o- Q4 W$ F) P
set-plot-y-range 0.0 ymax
g- L8 Y9 z. vend
$ P5 e) P4 h* Q2 e0 X- l" N. |$ h$ n# @0 J- r( l, q
to do-plots; ?0 }; X/ Q w& e
set-current-plot "Trends-of-Local-reputation"
1 i! I0 K, t$ E4 ^set-current-plot-pen "Honest service"1 D/ }& S) `- ~$ c A) C' ]
end, f2 A& Q! K3 l
( T2 O! Y' o( T9 P8 Z! N[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ] |
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