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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* Q& F N+ G/ W/ v2 w0 ^
globals[
4 d! R' M; `' ^( W- _xmax
4 I. s/ A$ P# y5 Z3 mymax W2 ~8 O- f( }. q
global-reputation-list
* s) R6 m. g" }. I7 \5 \4 ]1 v9 i1 R, E! I @2 m! g; F! T: U4 Q
;;每一个turtle的全局声誉都存在此LIST中
3 t: p9 S2 c- i$ f4 ^; S g$ hcredibility-list& v) l0 z+ J6 m! c% F
;;每一个turtle的评价可信度
- u2 Y* A4 Q6 K; m7 Y& l( d# b6 ehonest-service
: s( F) M$ |2 X: ^( _/ |unhonest-service" w; J8 A0 v' R5 H4 S
oscillation0 x* Y8 F, p; Q+ A T; \0 P, N
rand-dynamic+ c% O4 R6 L2 W1 {5 [8 z
]
( G8 w; z/ ~9 E# C1 h& r7 Z! S
- v' k- K' D3 d- C" m+ ^$ mturtles-own[; q0 u& e J; `: P9 ~$ V9 ?9 \+ |( _& b
trade-record-all
& u# b- P5 z1 h4 O x;;a list of lists,由trade-record-one组成7 Y! A4 t" ?* C, o# e j
trade-record-one9 R- U) `% ~' Z
;;list,trade-record-all 中的一个list,作为暂存用,记录两个turtles的交易记录% c. T, a9 t- q1 Z$ ~8 x5 `
+ ?) k" O( b" H' H* C* K2 K. W
;;[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]]+ n4 H, h g1 P
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]
, |/ C A$ n, A" ]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
% {6 w- e7 d$ Tneighbor-total
' Y/ x+ j4 r) ~, B+ y5 g6 e;;记录该turtle的邻居节点的数目
) c* i& R6 G2 r% ~ s7 ztrade-time' b% F, X+ F( X6 o* l! R2 t
;;当前发生交易的turtle的交易时间
, [; T, L9 ?) jappraise-give+ Y- K4 \: z8 E* `
;;当前发生交易时给出的评价
6 {$ t6 o7 {' w2 ?appraise-receive
$ Q( j' P# P3 Y4 `( N6 T;;当前发生交易时收到的评价2 B4 b2 J* g8 t
appraise-time3 v/ o1 U3 W5 j+ P* c. L }: U. r
;;当前发生交易时的评价时间" U- P# q k1 r; {
local-reputation-now;;此次交易后相对于对方turtle的局部声誉# w) }3 G7 T7 {' ~' _
trade-times-total# o1 [- X( u) n6 G1 f
;;与当前turtle的交易总次数. Z* b# @7 d& a0 ^' i, g
trade-money-total; ]* T q. W- f/ S8 o6 }
;;与当前turtle的交易总金额: e0 }3 y3 }# T, }1 O& j3 d& Z
local-reputation; B+ e" K* n- V T6 J. }
global-reputation
7 H6 \0 J a7 O- U' A4 J& ocredibility7 v+ A2 M" ~1 g% ]# o
;;评价可信度,每次交易后都需要更新
/ K& M' j& [6 A. E5 d$ @( [/ Ecredibility-all
. ]2 S' ?1 ^8 |* `" m2 F;;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: Q/ o8 T. o( c. E3 o
% h4 \7 B( s6 W+ F, o
;;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
8 m7 ?3 Y% A# O- Pcredibility-one1 m& r$ @' L* Z. l7 m9 o
;;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5 _$ I1 i V* t4 W; V
global-proportion
8 Z8 F& g. ]. h; a% y+ o% gcustomer( l3 Z3 _. T. K, B' S
customer-no* s7 B' B5 K7 W9 Y
trust-ok/ h/ @" q. W. w2 A- e
trade-record-one-len;;trade-record-one的长度
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/ h' Y" j; m [; };;setup procedure9 T! J4 R2 P5 g1 T2 f7 I: x
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to setup1 e1 I& F1 q5 Y! @% |; T1 J1 c7 r
" M! Z- ]4 G* y8 B& l) wca2 j' A+ c3 g2 `/ T
0 i4 U( C7 @9 @# hinitialize-settings
2 K: D8 r5 M! J' _2 p3 F
" j5 ~/ z, n- k8 |' ?crt people [setup-turtles]
# n9 j5 y i8 S1 b2 m
8 T; w; E0 R' U" e4 Nreset-timer: r* p& @6 b7 D2 g4 j
4 \1 Q( f4 V2 s: `1 B% y
poll-class
/ \( k$ j3 o+ ^) v: ^' n' D8 `
( T' d! W, b! h7 Y( g8 _+ lsetup-plots, S+ m9 y" f* ]7 d) D, A+ i2 ^" W
3 Y% K2 e/ [) a! w/ a K! L
do-plots7 r# i8 v' A: i
end
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( X$ N* d' f/ V8 y2 ]to initialize-settings T1 g! ^ C. r' b
3 l5 ^' G9 }: n, K b* G% _, N& b
set global-reputation-list []
# |7 F! ~- Z9 W! s' V; _% e
2 q- L% p3 j$ A% `* v5 ^( }) Y2 Gset credibility-list n-values people [0.5]
$ q% F1 w. b. O
, ?8 k6 g. V0 y) a# `set honest-service 0) _; H, k+ s+ H4 e
, a/ G7 }0 A, bset unhonest-service 0
, \2 `5 c9 V% M
7 y8 `- [% ?' X2 M" `set oscillation 00 l5 [ T) H6 A( ?! Q4 V2 l
' n5 t. e% {& i! g0 J- \7 v) y
set rand-dynamic 0
0 r( Z: }4 j+ C0 I2 y; [7 vend9 ~7 [6 `/ X% l6 j8 `5 t( C
- O3 \2 Y- w3 s& s8 ~
to setup-turtles
; \- B# ~/ T3 C) u p" }+ z s& ^set shape "person"
' l0 X W3 X. Y5 jsetxy random-xcor random-ycor
% `" p e8 E, Z- s ?8 jset trade-record-one []# g4 I% h0 y3 ?. q- _
4 w9 A, c& D8 u* U/ Eset trade-record-all n-values people [(list (? + 1) 0 0)] u- a. }, D8 x3 T1 T7 m. b
3 I# ]1 {- g% h/ r4 U8 uset trade-record-current []/ g! T! G, z1 L: I$ i, a4 O" x
set credibility-receive []" \+ v% H1 U/ |( t3 b. R
set local-reputation 0.5! ? \+ H4 ~1 @# i; Y" W- T
set neighbor-total 0
' x% ]" I1 t; X7 ?set trade-times-total 09 J9 s F9 d" O o- O. _ {
set trade-money-total 0
* e5 A9 W! E* n( P% D9 S0 [, }! vset customer nobody2 l$ V; X) {1 K b
set credibility-all n-values people [creat-credibility]: Y2 [6 v6 H. E3 h9 w# S
set credibility n-values people [-1]
- x, W1 r; q$ V1 P9 Qget-color7 ]4 W7 c4 l* g8 U# a' I6 f) c! g0 z
7 @; S8 z$ n* i5 ]: Lend
9 A7 k& ~/ }1 `8 g* \: d7 b! s8 f/ }$ k! Q& {) ]( k* U
to-report creat-credibility, X- O) J- K3 Y1 j3 w7 F4 h
report n-values people [0.5]
' T' a* A1 X$ \" D3 Nend# g; M6 ~+ J' }6 A" H" Z( q
5 K: b' G; T: m# L) l9 J: g" jto setup-plots" }! |; O1 Z3 E, [* l/ U
" N# [6 @' {$ c
set xmax 30
c8 R! K, ^9 f$ y% Q2 \6 w5 f, ~4 |
set ymax 1.0
`7 R4 Q: f* K u3 \
; D8 d# F, E8 w! \7 \1 N# N' v+ Cclear-all-plots* @% ~, o. J; }8 q6 O g/ o
+ [: f" z; w# X# V% {7 G
setup-plot1
% P8 V7 s4 M/ K' T
% x" W0 z4 {; D1 E l+ r5 u" `0 Fsetup-plot2
8 g! g8 e3 U0 D. T* R
* V8 W# {2 L5 v& m9 \setup-plot3& B! b. f( p7 }
end& o: o# _0 j% t9 l7 F: f/ K
8 w8 S* T* Z6 T& z
;;run time procedures
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to go" d: o/ |* t$ H) N+ k0 @
! W4 S n* p' M; C9 N% Q
ask turtles [do-business]
% l3 Q c3 \+ W/ C6 h2 ?" k6 w( Bend! D! z/ b6 r* A! C# A/ A& }
3 }8 X( ]# x7 \3 ^% k' G* @/ `- _3 d
to do-business ! e+ h V* y2 k
$ I8 j4 {7 f; Y1 _) u
7 E3 q# Y) x" w& m8 a& drt random 360
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fd 1
, v6 i X* U, S+ m" r, } @
`( j0 H( K& _( k5 b+ |, q: @, {ifelse(other turtles-here != nobody)[
0 s" j: F& |+ ~
3 V8 b$ t. \3 ^set customer one-of other turtles-here" P$ l! s. h8 s5 H
5 P9 |! E6 o( t/ Y;; set [customer] of customer myself
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set [trade-record-one] of self item (([who] of customer) - 1)+ q4 {6 ?2 u3 f. w+ C# [
[trade-record-all]of self
Y3 o2 Z# S2 F& l O;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
0 z( k' o* ~6 n5 ]6 G
# g8 J: k7 ^( K( r7 b3 yset [trade-record-one] of customer item (([who] of self) - 1)
2 U$ K! V" L2 O[trade-record-all]of customer
$ n {& f1 h" n1 N+ F6 ^$ w) y, F; Z g9 Z \! M7 V$ ?6 ?, U! I3 k5 {0 c
set [trade-record-one-len] of self length [trade-record-one] of self5 O# u+ G2 ~- L6 g4 U6 ^
1 x! t B8 J$ y& Eset trade-record-current( list (timer) (random money-upper-limit))
& M ^, y5 k* y4 v5 r. z" W( W; L' Q% G& w0 J# B: n8 ]
ask self [do-trust]8 a0 R+ P5 s4 d& _* G! M X+ {) \
;;先求i对j的信任度9 m' b9 ]1 x6 u9 E. \
& I; R0 X& X& l' V8 [* dif ([trust-ok] of self)( R( S0 v. x4 t0 r) `1 p
;;根据i对j的信任度来决定是否与j进行交易[, T6 w, A8 g* p
ask customer [do-trust] if ([trust-ok] of customer);;这里可能会用到myself W' ^0 R9 O6 W/ b
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[
. Q$ {. x9 n9 ?' u" c; Z7 L9 }6 s. s5 O% V, z
do-trade' K' D7 T) h- \# D# e" P. s
% ~1 B h$ o! I/ R% J* V) h
update-credibility-ijl5 g; h" `( S$ T
: |: \8 ]! d2 l& `( F* m( ~update-credibility-list5 y( u" e3 `6 u: ?1 x( p0 H$ {7 x
$ E5 P; T6 K$ y* X" N* ]0 A5 {% t
! x7 [! r8 \0 @! k5 Y+ mupdate-global-reputation-list6 c* p8 G K4 Y5 D6 y0 A4 T
# t3 G( D) ^. Y7 b5 l: v! a& {0 z) Z
poll-class
7 m3 F# q8 b$ Y4 J. J$ l5 Q t
5 x, n7 ^5 D1 t9 Wget-color2 k; K6 N0 o" a
" }5 q8 Z" f- y3 G- }! Y
]]
$ t% j, l7 x. n0 Y
8 d* X: u0 O8 z' b4 f6 o8 I;;如果所得的信任度满足条件,则进行交易
% B/ f# `3 t# }% y! D8 ]* H8 S4 ~4 @; R" }
[
8 K3 D& Q. l3 z0 m- A2 T2 Q, G. I. {# t" B6 U/ t, c
rt random 3601 r _8 ?$ ~2 B
- @* ~& H! D( ^7 r; @' D
fd 1" G" n, Q" i+ E
" l: ^( b2 r& j! n7 c# v; Y]
0 ]- Q$ b8 P. c4 Y' h$ b; u9 ?
8 e7 N$ K# [! Bend
+ t7 p$ U3 @" _0 ]0 s3 a2 g$ E \; _
to do-trust % R2 c" E* W O
set trust-ok False) r2 A) V7 u) U3 Z( e+ [2 V+ W
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let max-trade-times 01 X8 W; k* u" j1 ?
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]4 T2 A \8 w9 i' x8 [
let max-trade-money 0
4 ~' U8 l+ M" F0 R4 Eforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]], F& }- \2 Q! }. I, q0 X0 l7 f" }4 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))
7 Z1 G7 B# E3 Q2 x0 `/ V/ \ n7 f( C4 g5 E1 ]5 ^7 e
1 s( g5 |. x" m5 s* I/ V8 hget-global-proportion
/ H& |4 T! T! d/ jlet trust-value7 p/ A( g% c0 g0 `2 m2 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)$ s$ f8 W, l" N
if(trust-value > trade-trust-value)+ R; Q5 K5 S6 B: o C7 Y/ w
[set trust-ok true]
$ u5 K0 s9 F4 c. `$ x" wend! E2 w2 ]/ s5 J
0 E/ X( O @& k6 xto get-global-proportion
" H o& G7 ?! O" wifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
9 F5 ]2 s( c( l$ r3 m) N( ?: x[set global-proportion 0]
3 N0 ?0 H7 H+ q' G[let i 0
1 |6 ^+ ?; e1 \/ E$ f. Klet sum-money 0, R9 _8 p! l; Z: P- `! @
while[ i < people]
' y" f$ P+ Q( f0 ?# R' Y' x[! s5 \6 c' n, a1 a- n
if( length (item i
, f2 Z0 S8 a8 Q, G* c V[trade-record-all] of customer) > 3 )
, S* V$ w, O8 W4 C I[
* ]: n7 w9 P: Nset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
, d" O; X# ?6 @; T* X1 e]
% A* Z6 v/ N6 l]
- m# y+ T+ d- y: \2 ~/ ?let j 0$ L2 ]0 h, [/ S+ S( L1 t
let note 06 Q; n7 \( e3 V( t+ B. m ?3 I
while[ j < people]! g1 u& ^. H+ h
[
. T2 m7 e) f1 N# j" Kif( length (item i* c$ O3 d8 x% R: W, W
[trade-record-all] of customer) > 3 )
* T$ i% r+ L7 W' O+ A0 f0 a c$ L& ?[- w) x: R; C z. w3 X8 x
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)6 ]8 t; K9 t; A/ s
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
' b) \7 H( c4 S' `7 v[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
2 s, N9 I1 [; f- m) M]
; q+ _3 O4 }+ s. A2 A# w# ~( W8 O]
* P' ^7 h8 u' C# S+ _8 p5 Wset global-proportion note; `' Q) r# e) ?
]1 K( E& F3 C U
end: |. g& ~- V) O" |. c% t
9 y7 M @& g- b% F3 i' C4 bto do-trade! T- o# K4 q$ Y+ U* S7 _% a
;;这个过程实际上是给双方作出评价的过程
- ~& M- K" \1 H4 @set trade-record-current lput( random-float 1) trade-record-current ;;本turtle 得到的评价6 h$ K3 w) c3 x; I) C" w
set trade-record-current lput( random-float 1) trade-record-current ;;本turtle 给出的评价. j2 ?! ?: ~; W+ @
set trade-record-current lput(timer) trade-record-current
7 w2 Z7 k. y+ H4 N( D, n3 F h;;评价时间
2 G8 u( F: s& _9 Aask myself [! a& M& `6 p5 _5 J: {
update-local-reputation
+ J3 h& h0 ]3 u- t3 Gset trade-record-current lput([local-reputation] of myself) trade-record-current! u# O2 P/ r: ~, {9 I8 c. | T* t, x
]
: e9 G) ~- `2 M% A/ h4 k9 ?; @2 M3 l. W5 yset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself K! Z6 g1 Q1 o0 `; ~$ l+ G
;;将此次交易的记录加入到trade-record-one中' p( l" a+ d1 d3 h* N4 F2 Q0 F
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
4 c) U' S/ n% F) Z7 vlet note (item 2 trade-record-current )
( c4 ]; q' ?! r( i9 A# Uset trade-record-current. ^; q% w) U4 t4 G! W
(replace-item 2 trade-record-current (item 3 trade-record-current))5 \, E$ u6 u! s( S9 A5 l
set trade-record-current
. J; h% e( n0 b; }(replace-item 3 trade-record-current note)
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* j& i( [* w- ?: h( s" G; G( M9 g! p7 E
ask customer [
6 q, _, j" {/ U, A/ }" V& e) M& Pupdate-local-reputation
5 c( `% x6 e$ Y+ k5 Z$ n$ M" I( eset trade-record-current
* ?0 h( a& z( a! ^(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer)) ! a; i6 R6 q: G; Q
]- {. G' q" u8 k( j/ s
0 O, ?- \5 Y5 {) l$ P# W0 {. b
M: q% y5 Q$ J
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer" t7 m, y: T3 i
4 f" h8 a6 S& B" t: s" ?7 L0 v- dset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)). Z) H, ~/ i6 ], w1 a
;;将此次交易的记录加入到customer的trade-record-all中
E/ J; x, `4 Y- X# c, D! hend0 b& P* J5 T; _% ^0 G+ Z* E
" Q1 H7 ]+ H2 y- }5 H+ v6 Ito update-local-reputation9 k/ ?& M3 f- x/ ?% }1 r3 f) [5 i
set [trade-record-one-len] of myself length [trade-record-one] of myself
& ?7 a; [* s7 _9 J
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;;if [trade-record-one-len] of myself > 3 ( S1 E1 h; o# I6 @
update-neighbor-total2 P- [ F5 C6 E4 ]+ a
;;更新邻居节点的数目,在此进行$ r4 x" ]) c& r( d
let i 39 {4 x! O7 N" D
let sum-time 0# s. @$ @0 k2 t- V/ _! b
while[i < [trade-record-one-len] of myself]: e8 k% l) m- S8 p( k
[) j, q% m6 h# o& | b& e% W
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
7 D+ W' r! O* T6 n7 w' Hset i, L7 E: A9 _4 M# l* E' n5 P$ b5 [
( i + 1)) K* O6 H. w! ~* } a. a
]
z$ s# Q7 }0 V$ Y7 m! Clet j 3
9 L1 `; s" n& @/ z0 {& D) clet sum-money 0
2 x- a* l! J4 m$ \& h4 |while[j < [trade-record-one-len] of myself]& M* m; s& o5 |# Z: F
[
9 l7 t5 n$ ~9 t- o! E+ |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)
, L9 J8 c0 t& U' k& l* J( h6 lset j$ ~( c" r8 _4 |. e. X
( j + 1)
* t1 F7 b8 e. s]
o' l7 k, k6 ^, h" nlet k 35 x. H# }* o2 ~8 {! J1 V
let power 0
" L7 \3 _0 T+ ?. Dlet local 0& Q2 I7 ]2 V" K
while [k <[trade-record-one-len] of myself]5 r9 o n3 d% U- N A/ J
[7 u6 w, o5 {1 m n* O2 \: N
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) , s1 [" R1 i( J9 d/ T4 f) l# p
set k (k + 1)
3 U H% Z/ Y7 o# u$ p], r8 c! k- r9 q
set [local-reputation] of myself (local)
+ Y6 A0 O# h$ b" @6 ^5 N6 ?" v& uend
: |3 n+ o$ U# r& O. L" C
- y# }0 ~2 a) |7 @7 {7 n: J1 }8 }to update-neighbor-total
$ T1 r0 L) q s! z2 Q6 K1 d$ k1 A k D
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]% T2 g3 g0 m- E! @# z
4 ?/ v1 |0 Z0 ^( q/ R W6 [ o" @, ~) Z* O' c- C" U2 u
end8 f/ j+ s5 v" ^& S
( E6 }) p7 [& T3 G$ w
to update-credibility-ijl
+ D" U# k0 c n8 y- E4 l6 q: Q8 W$ Q7 a, e, e, E
;;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。
2 T& f) h9 y( a9 I1 p5 n; {2 ^let l 07 f! H& v7 |" K
while[ l < people ]
% m1 |8 @& y0 U' Z z: u- P9 f;;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5 v7 v# m9 I0 M
[2 v4 }, B( i2 h5 x( r$ N
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
$ N) W( I2 M2 p8 G2 q1 wif (trade-record-one-j-l-len > 3)
; a r: W+ e5 Q* W0 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* M9 H4 K+ P9 N6 G9 M2 Glet i 3
9 L' z% D: F6 q$ k- T/ ]) plet sum-time 0
1 q9 d( |0 \/ r: _! |! Twhile[i < trade-record-one-len]
* d9 I. g; w5 N) g[2 ]7 e A& M/ o2 j# f" H& X0 V) d
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
* w! @7 Z: f( ]+ yset i
4 q6 G+ `+ S; _8 j( i + 1)
* U5 I( O) p7 o( ?9 b$ g A]
- w; b. [/ s: j% olet credibility-i-j-l 0
2 q( I4 b6 p$ B/ ]- R;;i评价(j对jl的评价)
( I0 V, ~2 q8 O1 ^. |let j 3
, Q6 t+ b+ F, p$ r! ^; Glet k 4' ~! C- T1 h k, g% _3 w
while[j < trade-record-one-len]
6 V8 N0 I7 [7 F+ ?4 d7 O& a/ q[
9 {( I1 J3 M3 l9 V0 Qwhile [((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
0 {, Y) ]5 Z7 Y J: E/ ^7 aset 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)6 z" ?; l% J5 v
set j
' v1 _/ e1 A4 a2 ~0 ]1 U( i$ V( j + 1). ]% a4 O6 O& E! L
]+ b, J0 i: o7 C
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 ))) D8 Y# x. _0 K5 q. s) n
( q9 q* P' \7 Z' V2 w) d# y' c3 B; w5 w
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))0 }" u" X. }' }# H% q+ r9 ?
;;及时更新i对l的评价质量的评价; @# n" A7 Z& d7 D7 c- N( m
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
) H3 {7 H! M6 G1 yset l (l + 1)* F( Z3 q m+ j+ g( J% D
]
, Y2 L& [/ g) z- S w/ Bend
& I% J+ z9 s9 M$ ^$ O: X7 b: T- F* ?
to update-credibility-list- C' K% K* D* k! ~# S9 X
let i 07 T% l: s+ r: Q9 r& p
while[i < people]
' E: B2 \+ f6 [4 n5 M7 l[
. A& U& |" i% `5 }% Klet j 0
& m% [' G1 h4 r* U7 B) V: ~ k! h& ^let note 05 b+ U: w( @) K; ~7 x* x% v2 ^
let k 0# p% l; y$ n3 j; D$ q5 a; G |
;;计作出过评价的邻居节点的数目
" @# v: u) n, [/ c wwhile[j < people]/ a0 A& F1 r6 [# [# t5 q
[
5 E# I; D* N4 I. @if (item j( [credibility] of turtle (i + 1)) != -1)
3 j4 o( t" t W& z, B9 `1 a;;判断是否给本turtle的评价质量做出过评价的节点
& r+ Y, x* Y. k; Y[set note (note + item j ([credibility]of turtle (i + 1)))# P* C) I2 m5 W: [" K6 M7 Q; {) }; l! u1 Z
;;*(exp (-(people - 2)))/(people - 2))]
6 n8 p9 w0 y( n% o3 R- o. |6 Jset k (k + 1)2 K0 f& x1 I1 m- d" }) c9 c5 I
]
& K- X+ h5 G2 h, ]4 w( k/ C! `set j (j + 1)
$ ~ U ^+ T9 _8 j2 U ^( |]8 Z/ `, v7 P% C) [
set note (note *(exp (- (1 / k)))/ k)
. x& F8 `% W3 Q# S8 G5 _: jset credibility-list (replace-item i credibility-list note)
2 p! {" Z+ G" tset i (i + 1), b m& ]0 S; p: p9 E& Z% x
]
& I/ @/ c; \( O9 V2 p# I9 d6 `end
$ Z# S: j9 U% F) h4 w: [+ S# L, i4 u% i) j
to update-global-reputation-list
# j: n- O/ V) O! r( F/ Wlet j 0 [: [" ^9 p" @) g
while[j < people]
& u- C* C+ l k( k7 u7 _[
9 U2 d" S; _+ n1 d/ zlet new 0
p# |+ W& z' I;;暂存新的一个全局声誉
: h. M# ~% `6 t$ i: a0 U; b" e* {let i 0
8 E% z% Y0 ~, e9 b1 f8 o% B6 xlet sum-money 0
7 v, v/ L/ R' n+ X: X h" Flet credibility-money 0( H& l5 V7 c& }# y! M: z
while [i < people]+ h0 h# t1 h7 a% X, t1 d
[; X4 U9 \% v; k
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))2 E7 A4 |* g5 I0 H( F
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
. L7 W) f4 ^; q" gset i (i + 1)
. E5 ]8 W. @6 J) v! P. a]7 d( j$ U4 ?) B
let k 04 a- G5 q/ x2 R5 q( J- P; [
let new1 02 D* j. ?& [# U* o, s! _ o e; M
while [k < people]/ X9 B* K& \: @$ ^$ H
[$ v/ i }7 d3 c4 O# V' A1 i
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)
1 C# \5 Q1 Z! O+ R8 R" Iset k (k + 1)3 Q+ J( F& Q5 x* o0 F
]$ ] S( n# R, p7 X6 T
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) + ]( o7 O% P6 ~8 f4 m9 F
set global-reputation-list (replace-item j global-reputation-list new)
% F/ O/ o; d1 [( C/ Q6 kset j (j + 1)
9 C2 N# u% ~0 K0 A$ i]" A1 a G. i: |: i/ i! g
end$ E1 q- Y1 H- `( N! ]! G0 ~ v N
* a; t& _% [& ?1 {, @
2 ^+ r9 j ?! W8 \ u
1 {. \& Z3 _3 l. O0 n) zto get-color
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set color blue/ R7 f; L2 R0 S B, W
end' v. w* f6 c* r9 H d6 B$ i9 {
5 z) ^8 b9 b2 l3 y4 K: @" |to poll-class) [; g% k, a% t4 u0 h. i5 @: o) i
end
! } ~4 q2 h: x y0 Q6 W, b4 T1 P% Z
to setup-plot19 U* V! i0 O( O: r
/ w* ^# N$ o6 x8 W$ s- y3 }- j) p% D3 ^
set-current-plot "Trends-of-Local-reputation"1 _8 } W+ F: K: {" _6 {: S* J; V* I
2 k. F. g6 A% `" F; @set-plot-x-range 0 xmax
9 u2 I2 C* n6 h j8 |* P, ? i; W2 }7 C) {$ U. v- y/ B
set-plot-y-range 0.0 ymax" i* s. k% D$ H. @# @/ `3 N5 B
end
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to setup-plot2
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set-current-plot "Trends-of-global-reputation"
9 d# }' M; _9 w& \3 R% b% w7 K% \" e$ k9 A2 |' X
set-plot-x-range 0 xmax8 Y$ u7 Z. a7 c2 u. o) @
* `; J+ f' J( T) G. X8 _set-plot-y-range 0.0 ymax2 }# B& M3 r8 s" u9 v
end! j; V0 m7 O% ?; v& ?: `8 v9 { u
8 p% F% D3 ]: j$ L4 q
to setup-plot3" u/ H) f( F0 E5 i# R& v
. h0 q& @3 ~: V+ `$ u. s7 f8 }1 @set-current-plot "Trends-of-credibility" ?- x2 n* ]$ R3 ?% K. K# Q- v
; k. `8 T5 G1 T
set-plot-x-range 0 xmax4 G$ E0 B; v; z
5 r$ Y, @3 |3 t9 j& Z' b
set-plot-y-range 0.0 ymax
l" [, |! T T4 o9 ~6 t: Xend: D6 r: f9 s# f0 v' h& w
- ~3 I$ h& Q; J0 uto do-plots# M7 X) ~% Z5 Y: R2 f' L
set-current-plot "Trends-of-Local-reputation"
- G$ |0 ?8 i0 q, }8 j1 gset-current-plot-pen "Honest service"
4 X- d# I% Q( j }end
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/ Z6 T1 w& P5 p, {! X% M% ^( T5 J[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ] |
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