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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& _# O, _$ {- R0 }" ^& ?* Y/ y# ]
globals[4 Y/ g0 O- L+ v* |& h/ \3 m
xmax
q3 J# |0 b) l9 y& F. v6 Nymax! l' Z5 } b% t8 l3 T6 }# W1 R
global-reputation-list
% u0 [' P2 k C+ b) n
( {3 x7 q) T: x! z;;每一个turtle的全局声誉都存在此LIST中' d0 a+ P2 D3 W: `# O
credibility-list* G( h$ G5 p1 V$ B
;;每一个turtle的评价可信度0 `5 p- i4 K% w' ~( k- h
honest-service
+ G* H- ?# f+ L4 L5 |unhonest-service
( U+ y0 Z e5 G5 F3 Boscillation
8 S1 v8 u. K+ G- v# G5 Rrand-dynamic5 I, H7 ?6 I# Q
]
5 E) `2 h* x/ m. ~- G3 e
1 `) M* S6 o+ b2 r% \7 eturtles-own[' I x% O6 B" }; t+ i; \
trade-record-all: S, Y1 O/ {2 {" ?, K4 X( W
;;a list of lists,由trade-record-one组成
+ G7 h' q3 X* v" A Otrade-record-one
6 O4 F$ t. Q$ {8 O;;list,trade-record-all 中的一个list,作为暂存用,记录两个turtles的交易记录
8 ?2 d! z, B% S4 f$ a% W" ?' C9 K$ A O8 Y+ ?- v
;;[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 Y7 a* n3 Y9 t4 x1 E* R
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]
7 n% \% f S' m5 D& l/ Scredibility-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list0 h! O6 O. Q' J: i# `. y
neighbor-total
0 v* ]2 H* ?; z' O8 g8 G;;记录该turtle的邻居节点的数目( |* ? u) ~) ?: N! A+ @ d! V, R* O
trade-time
c; s C2 e4 _& l2 v;;当前发生交易的turtle的交易时间
: T5 C5 F) Z2 P0 p! ^) U6 k" Rappraise-give
, i( E/ }9 }% ?2 G) ^' I1 h4 e: o;;当前发生交易时给出的评价$ z" }2 {5 a0 B
appraise-receive
* a; N+ ~/ A6 T m" B4 ~;;当前发生交易时收到的评价
) {0 Q" ~. [# h+ @appraise-time/ ~4 t9 a V8 _5 y5 x
;;当前发生交易时的评价时间) G: I# _+ Z, R9 o
local-reputation-now;;此次交易后相对于对方turtle的局部声誉# o& @9 \! J b* N1 J) d. F+ b
trade-times-total' X2 T8 o* q* O: V* q
;;与当前turtle的交易总次数
, e0 g+ _. S1 h% otrade-money-total
! o' V) L( x+ p# @, Y4 d `3 a2 E;;与当前turtle的交易总金额
& i: o( I& e$ r1 flocal-reputation
; n. y: ?0 p3 R1 j8 ]global-reputation
! Q. ?+ _; }$ t' Wcredibility
6 ?, P$ J! z. r5 j4 O% M% T;;评价可信度,每次交易后都需要更新8 S2 A6 i, W: o+ |
credibility-all
* Y+ B" T6 |" ?# |;;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1 d/ o& j8 S% k! E2 l" w; R
! w+ u8 y. A7 }2 F8 N' l0 h' ~;;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
" j/ J* R2 W( @% t8 P+ ucredibility-one2 M+ c9 ]4 m" Y3 t- Z7 ^- T
;;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7 X5 H! ?) c6 Q$ z
global-proportion$ M/ ]* h; a% B$ J# v$ w
customer
% Q8 `# d+ X" R* S; Fcustomer-no
" @( i) z. W. p0 h. \2 h6 Z2 _trust-ok
& P1 r4 u* R& D' m% Z0 `& |trade-record-one-len;;trade-record-one的长度
& ^2 E# d* G2 m0 c]
8 N0 `: s7 e$ } m
) }( B2 @8 L- q' B1 }' b;;setup procedure
0 H. M% h7 y$ V8 U
5 k) w4 _! m8 l h5 ~$ gto setup: ]2 a( u. p/ M- Q3 k
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ca6 t3 w, ^8 f7 z! b- @
3 u2 `& b& \" k0 w! L) ]- [( h
initialize-settings
9 t/ M& N! M8 r' n8 |) ~) T9 L$ O( \2 ~9 l
crt people [setup-turtles]
) h8 H7 P. M: H; @' u: i' ~
3 q% C6 `* F. ^$ R( P8 Z/ Areset-timer0 q' ~) D2 P" x' p6 d
$ q" W% I a, |0 h2 }2 R
poll-class3 I* \' S& |- ] s; w
, D5 N2 T5 ], n! s1 C, ^
setup-plots
G, X4 Z% d! ^! T" Y; q8 {
w5 ^5 i. S3 \ u1 c/ ?do-plots
6 o D0 d8 [* g. q6 e( Lend
2 _% j: P& R( V6 q
7 ]8 A$ ]0 g, e# Q. ~: @! ~* Oto initialize-settings
& s s' Y; R3 E: p1 t. T! t2 m, p6 K
5 a/ Y3 O2 Y% A! n+ n7 Z; A {set global-reputation-list []
. O P8 F5 e; r# F1 E4 v4 M9 U/ g, g2 G
set credibility-list n-values people [0.5]
7 L- u9 b' W/ u1 v" J! I
8 C6 H& t |3 f, b2 N- V( c1 Tset honest-service 0* W3 v" ~3 e1 o) x0 h( e
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set unhonest-service 0
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) \/ s8 {! j% R5 h' Y+ z8 cset oscillation 0! C- }9 Y, l# p, Y, n1 g
& M# z7 {/ v# n$ o* O7 G: |set rand-dynamic 0$ C6 F7 n' X8 x- f2 u4 `6 p
end
) s! p! f ?8 M. \1 H9 `+ v# q6 d) o8 n5 R) G! X
to setup-turtles
& @# b* [; N) V- S; n5 `set shape "person"
- v8 R T7 r9 N4 Z# S5 C$ \; Esetxy random-xcor random-ycor
3 d) b. w O; t8 I9 h$ Iset trade-record-one []! `; ?4 Q$ X" r( b
4 d" {( h* ^( n8 A. L- u% V
set trade-record-all n-values people [(list (? + 1) 0 0)]
( b+ Z$ G# l6 A2 B4 p
5 o0 _8 D/ c/ C% j% T8 sset trade-record-current []
/ Y; a* c7 U0 s. z0 Uset credibility-receive []8 Z5 h# J- w- P# Y' ]1 p1 g. b
set local-reputation 0.57 o5 [* B R* w5 S# i
set neighbor-total 0$ }8 o1 |- S8 }) ~4 S" B0 i4 R/ A
set trade-times-total 0+ j/ L' c& p# e% m+ I8 o7 ^2 M" T1 p
set trade-money-total 06 D& b" @ W8 n1 \# H: U6 m
set customer nobody1 Z* v/ @ f7 U$ J! d5 e
set credibility-all n-values people [creat-credibility], R# ~* e" D5 n; P
set credibility n-values people [-1]" R8 N. Q/ z ?+ x
get-color
$ w+ J7 \, M- ~6 j2 U
( b! b% `+ Q6 w$ {end: Q0 j7 Z: x# \( T6 {) C( w+ f
* d z( I) M3 s+ w. n) b
to-report creat-credibility
8 Q+ c9 l1 r1 W' e# y Ureport n-values people [0.5]
/ k* n4 k' j* {, {$ C4 fend
7 P6 c2 [" B# }. N* k3 V: O8 Y5 e5 z, q
to setup-plots/ ?. R% m- A" k5 z0 f
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set xmax 30) V6 a% n; Z |' V
6 x5 z0 x4 a) g1 \set ymax 1.0
g' o$ L. `) X: r6 A" _! M- l
clear-all-plots
4 D4 d% M0 a2 X6 X: C+ O
- i/ J* s4 ]; k' _% ?setup-plot1
3 J8 T% r; w2 @( Z4 b$ C* Y/ ]( {/ H# M0 W$ b' c2 L% X- `+ L
setup-plot2
6 A2 p5 {: k( ?
) h7 U [' J% n' {! v% N0 L# Rsetup-plot3
0 D& m! V" I6 [- b* G% Eend
$ k7 A4 X: O, r* M4 `0 r
- x# y1 @* Y0 w+ h;;run time procedures
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, ?+ ~6 U9 w" C, H4 [% V7 H; uto go, Q5 u- D/ A+ ?" \+ m' e/ U
/ g8 U; E. ?1 B# z c0 y
ask turtles [do-business]1 ?% v0 B1 V3 L0 g M9 _. f" x
end
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to do-business
$ y7 s% B% j. N P* Z( X7 ^) I, y: @' x1 L& q% _
[, t \( k! ^- V3 k" g2 W+ Y9 b+ krt random 360
2 x" d. ^8 Q( J% D- K1 |' n8 i: N: j- }: t4 f e4 D. a! _! D
fd 1
T4 y2 \1 ? T# a. n% M
+ E8 C2 @6 x2 g0 }ifelse(other turtles-here != nobody)[2 s* Y' G! j1 D4 x5 V
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set customer one-of other turtles-here
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;; set [customer] of customer myself
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set [trade-record-one] of self item (([who] of customer) - 1)
$ B4 I) H1 J: P j+ l$ ?[trade-record-all]of self
8 b0 e+ w- \8 h9 S: B; {6 E;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self7 _8 V" ]; E9 G4 d$ e
7 I! f0 h# }, s2 @! m" C
set [trade-record-one] of customer item (([who] of self) - 1) a& b' @. P+ P
[trade-record-all]of customer
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d4 Q8 d9 b8 ?# c6 [" g8 Cset [trade-record-one-len] of self length [trade-record-one] of self, I/ r1 Z5 B2 o% z
7 U) N3 q0 A, f0 I( G( e* @
set trade-record-current( list (timer) (random money-upper-limit))8 u6 p8 O% R5 O1 [
+ g% y' E' A) W
ask self [do-trust]! S7 T9 `2 V& d% s$ F; h2 K
;;先求i对j的信任度
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if ([trust-ok] of self)
9 I3 @+ ^4 P9 J8 q;;根据i对j的信任度来决定是否与j进行交易[
9 t0 z0 M$ B, L# q9 g8 c! yask customer [do-trust] if ([trust-ok] of customer);;这里可能会用到myself
a; A, j% p; i6 a9 x$ _: S% ?% h* H! p3 Z1 t* D
[
: P- H* R/ D1 I
3 M" i% E' G: T5 S& Ado-trade! `! |4 ?! B- _! {
; O: n& J7 V, Y* u. |/ G
update-credibility-ijl! @& r- p. X$ h
( T8 g1 ^' y; e* L; i
update-credibility-list4 ]) d1 h/ ~. [* L
" _; W! q$ F0 A3 Y* |% j+ O
6 v2 ?4 n# O2 O5 [3 V! v( Vupdate-global-reputation-list, s; _# K$ p8 p8 C
: `% X! V$ L2 p: K# A9 G5 \! g
poll-class
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get-color
$ E# a% t8 n& l3 H
! v' ^; n$ @/ V3 ~, g E+ X]]: `" p, l" x: m& B2 M3 p
" U3 F7 w; j) z2 f! \7 y;;如果所得的信任度满足条件,则进行交易
# V5 [4 [% ^' Z
/ I: r& w+ a! |1 T8 g9 P* B[) ^; k: r) k* e) Z6 v! E/ V; H
% `& W% ~( k. ?
rt random 360* U9 [$ R) q$ `( N
8 C) x8 J/ ^; L/ C- d
fd 1% _" H9 N$ Z9 ?- \* H
2 q; o2 A f0 @- O, D# r]
( G4 J. k6 m( C* ~, y+ k/ _; o* c" e- I+ D5 R
end
0 o6 j5 S; s6 r
0 w7 M l$ T/ hto do-trust ; {3 H0 m4 o1 g a3 c9 G
set trust-ok False! d9 K0 s, m" B+ @5 [3 ?
4 }) J; i( n3 b) M6 u$ \! E l, S
7 T4 k6 b* C! J% {
let max-trade-times 02 K. s5 b9 u& d4 z7 Y* y
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]! m. D" |2 A9 i! C- D) Z4 `2 m
let max-trade-money 0
% ^9 A9 A i" z5 t2 D) N/ Iforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
' W" S: q" a/ t. c) rlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))0 |: s" P1 {7 }! ^
, q" a! k# U9 J0 ?
' v2 G. \; T3 W/ C$ l. D
get-global-proportion( @) _8 O; `1 d6 c. w* g
let trust-value
9 i& s' ?4 z* t% Q, C0 p% Xlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
% j, U( V/ R5 _ Y3 ^if(trust-value > trade-trust-value)
M4 a1 X/ V) _6 O5 k[set trust-ok true]
! ^* D2 Q" ?4 Dend5 b7 A; k' _4 j" d6 G1 ?# R
9 O n0 H7 K9 {: z' F& t2 h/ k% v7 `to get-global-proportion1 j2 h! @% i8 r, U& T) f f- V$ L+ g
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
4 a& ^" y Y" f" E# h! w) j2 i9 p[set global-proportion 0]$ m+ L0 w9 p5 C' s6 Z
[let i 0* f% }6 T) G9 M9 |7 ]
let sum-money 0! q, P0 {; T4 {' ^% r
while[ i < people]$ h N# C0 Z- D/ h, x6 j0 h
[
; @' L+ h0 y& V/ C. Iif( length (item i
3 \7 U) ]5 H& u5 N7 ?[trade-record-all] of customer) > 3 )% }6 G1 ^+ B5 R, L0 ~, }3 }: X
[7 K; g3 C; x, T/ r2 l
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
. e( y! y7 p s& N8 N; W. D]2 ~0 o3 N% B% X- _
]
4 @, j$ L* q" t8 |! Hlet j 0. q- V4 m! b$ `: Y; W( H7 P
let note 0 p$ o. C: ?3 }9 m
while[ j < people] |5 B R! A# D7 e( Z
[
( K$ _' m/ E+ P; @8 `' ^, \+ Kif( length (item i
& ^% B( k5 W) E3 }[trade-record-all] of customer) > 3 )
/ V$ w9 B7 \5 ^, K5 u& I. P) J' i[& E) j/ L& y; O! O& Q) o
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
7 I u4 l7 I( N+ G[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
+ z9 h5 Y) J( E3 H) B; A+ T7 D( Y[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
& h, R! |3 _' W/ F8 q) n$ Y0 M]
' _7 Y% J% x' b/ m3 o2 a1 ?2 h]. g+ I" D5 r3 S- C* c- p2 j
set global-proportion note1 d/ ^" Q3 O3 `. ^+ [
]4 M2 o+ }8 k, }: G) \
end6 r/ ]5 _" k [
, _$ V# s: \5 m6 |$ [- yto do-trade
' {, V6 q1 J2 T9 C9 ?# `;;这个过程实际上是给双方作出评价的过程
) L3 n! L! O m( h" lset trade-record-current lput( random-float 1) trade-record-current ;;本turtle 得到的评价
- w, a' x( ~1 `2 R! o# c+ Bset trade-record-current lput( random-float 1) trade-record-current ;;本turtle 给出的评价
1 b8 a: s3 Z# v# |* Y, D/ Oset trade-record-current lput(timer) trade-record-current: v5 ` [9 ]% D+ |% P% a; Y
;;评价时间
# j5 s, q! `1 wask myself [1 w! M: i5 R9 ^- z: G7 k
update-local-reputation$ @0 d2 n2 `; F) ~- _
set trade-record-current lput([local-reputation] of myself) trade-record-current
; |; c" S q5 e" x F]
& M5 Q* C+ L( o" W" v1 Vset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself& M2 X( ~1 l) K# e
;;将此次交易的记录加入到trade-record-one中
, ^3 p5 z4 B' M% z' a1 x) u1 J" Mset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
& _5 w2 J+ |( b6 u% l+ j) llet note (item 2 trade-record-current )) \6 |( D3 _4 o4 y G" [
set trade-record-current2 l( v, l0 w. t5 j" P
(replace-item 2 trade-record-current (item 3 trade-record-current))) p6 V7 B; g/ _5 v% n
set trade-record-current' A1 f% [0 b- f+ V5 G
(replace-item 3 trade-record-current note)
8 v0 \( V! x7 Z6 l- o
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7 l4 @( ^" M+ k1 @ask customer [- B0 x1 Q2 F6 u; z; ~9 } ?, c
update-local-reputation
+ x% G. F, B7 f }0 n. Wset trade-record-current
, X9 ^+ j0 s( P- ~+ z(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
0 Q6 T3 z6 N9 R7 N7 h8 @0 a]
: I- {: p i" }9 y
1 g7 S8 R# e7 E4 u! W3 r i8 l7 b4 T% l0 n8 f# k6 S# Z
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer ?8 g9 y7 P7 A1 j( O _
/ O- j8 o4 ]5 S3 D/ f
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))6 k, u- d" j9 `0 B8 U
;;将此次交易的记录加入到customer的trade-record-all中
9 n1 h" v3 y4 B+ \6 {+ N+ c, tend( Y4 K' L+ r7 ~% Y; ?
* V- w' D& X ^7 Z8 P7 N( S+ fto update-local-reputation
# u5 w: b: x2 k/ p8 n0 _* aset [trade-record-one-len] of myself length [trade-record-one] of myself% {4 v$ l* O& p" Q7 }8 I
( b" _% a# H. P# w) s; H; ]
8 w0 v4 A2 Z: m2 a;;if [trade-record-one-len] of myself > 3
) X( n! F( S/ I T0 jupdate-neighbor-total
3 Q* [: Q5 p. v4 O& i. n- i/ H;;更新邻居节点的数目,在此进行2 p& N/ s% Q% y" ?, R* H
let i 3
8 g, f( ^; v" r4 H* U% e) J7 blet sum-time 0
" G; K% j1 @: _& l: Hwhile[i < [trade-record-one-len] of myself]
1 U$ l9 P! f: _- E[1 P6 {! ]8 T9 ~; w
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )" c2 q/ U$ G& W; M4 Y# v' y, v
set i# d; C- g' |* c; V
( i + 1)
( w5 K9 [4 z5 k$ k]6 P2 X4 H3 W+ E3 P' n. c
let j 3
- L- J9 o+ }" M/ m% Alet sum-money 0; Y( S- ~8 A0 R9 ~$ E4 d# ^
while[j < [trade-record-one-len] of myself]
9 J$ k: A* ], L7 |[1 p" Q$ v) } ~0 [
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)4 }# O9 k9 g8 y, L! U; ]
set j
2 S+ u, v7 a9 v G8 g7 @) Q! M, @( j + 1)
. C9 T, y5 l9 }8 {: P]
7 [* \2 l, V; [1 f# Alet k 3
+ r1 T+ z) N) N& r% f, slet power 02 w* \+ C' j( ~( @" X% d! c
let local 05 T: l+ a& O1 @( a" I8 S4 i& F
while [k <[trade-record-one-len] of myself]
+ \- Q+ v4 `& c+ a+ K' |; a[, v$ M' Z: n6 @* p2 M
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) ( `1 Y4 y7 M- ~& M% n( o
set k (k + 1)2 ` M0 G# h% l
]
, X2 W- N1 U( d5 i! ]set [local-reputation] of myself (local)4 C t' c/ P+ }
end
; q* P/ @. x# ]! [8 s8 j) S' J* c: M3 E4 h9 u
to update-neighbor-total- ]$ X. I: d) o% H% h
2 k9 J$ O2 ?% t, K1 z. Mif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]7 k5 h8 I6 ?8 [
( C1 J# p. f3 h2 k0 x
0 Y% ^) x, k# J) y4 F8 U# \8 Wend
- c. M( y+ b9 Q; ^3 y6 z* \' e; w
9 e1 I& H& N3 s' D+ Yto update-credibility-ijl % D8 R, S% x6 k$ O; k
% |% \/ z0 G* d- R
;;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。
* |. Z3 {1 j) Z, Rlet l 0
% _$ `3 ]* L7 A1 N9 U9 c/ kwhile[ l < people ] E. r+ _8 l- j( q) R! z, t
;;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; M$ G5 f+ a: p4 a
[
2 j2 e1 L+ Z9 D/ E2 ~0 slet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
# U/ m1 x1 f" s' ~1 Qif (trade-record-one-j-l-len > 3)
2 e( Q. N4 L- d9 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l的trade-record-one
/ R3 K7 Q+ i" E. llet i 3* M' W2 ]- E5 E' ?$ X' y3 Z3 n
let sum-time 0
" j0 H1 A* {! V" ?) O, C9 T' {+ Twhile[i < trade-record-one-len]1 ]8 U/ Q% Z- Z. t5 Y2 _9 U
[6 l' h1 _9 u' x4 H* i) ]
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )2 J6 m6 K' o2 [' v8 k6 Q3 @
set i0 s7 K# j5 ^/ a5 A/ T' d7 w8 p ^
( i + 1)
8 N6 s% O6 y( N: Z: u k8 P6 n]
8 `* Z4 u# K4 e, m* nlet credibility-i-j-l 0
' O/ `5 L S$ o; o! h, `2 k;;i评价(j对jl的评价)* L) A0 z1 K4 b5 C( z
let j 3! {, P t5 |% i: ^
let k 4
4 E' j2 W1 w+ p6 C$ `+ q) K& a) ]while[j < trade-record-one-len]
3 t6 e* _9 @% a1 F: t$ |[8 X2 U2 q6 L, |4 N/ j$ I3 n
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i第k次给l评价的这一时刻,l相对于j的局部声誉% _6 T: T0 A) f( a: X: m
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)& j& O1 _6 n. T% c- L4 R
set j
- t2 j$ ]' J3 e- ?" U& K: E+ D( j + 1)
/ U: S7 b, X! P2 S7 I; @3 [# o]& d% E& J( l ]
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 ))" `5 R$ G8 e9 m0 \' _8 s
* o. a5 e* e# P% A* y
- V1 y1 L s: A8 E; [9 b8 olet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)) S, q6 ~: Z. }# B: A7 v! h7 c
;;及时更新i对l的评价质量的评价
" Y2 L" q# A: x! t+ p* W+ ~set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
' s5 s8 V0 E/ d% U& Z% [1 Iset l (l + 1)
1 g' e6 x c8 n+ `0 _% K]
; j* ]/ ~* C2 K7 Iend
' Z/ x8 b4 j) |6 a2 u* o: h0 J* U8 e* c7 A) u
to update-credibility-list
/ w; U& A+ v$ W2 B- y) ]let i 03 ?6 K: |7 {/ S6 |4 g: \
while[i < people]
' z8 @* \ b y[3 x% j T R a3 [( ?% j0 f# D" u
let j 0: ]9 D1 ]) z8 t) q, j4 {6 K' o
let note 0
! C% m+ o+ f0 |1 D a( K$ v, Clet k 0
! B \+ i6 E# f8 f;;计作出过评价的邻居节点的数目
- g. _+ I5 ]. O: v. H# o; hwhile[j < people]
0 L3 l* }1 {; s7 y" K[
: `2 B+ K( W8 B2 `0 l2 a8 E2 Xif (item j( [credibility] of turtle (i + 1)) != -1)
( P) D( [ h r/ L L4 X5 Q. l' i;;判断是否给本turtle的评价质量做出过评价的节点
, I; g7 o# Z/ y; D+ N6 S7 F[set note (note + item j ([credibility]of turtle (i + 1)))
/ p' h/ ^& n9 i [% C1 l, F8 s/ \;;*(exp (-(people - 2)))/(people - 2))]
5 L* H. D, O# a" y" Q) B) eset k (k + 1)
, z s9 p! t' d" U& s6 g; T]
( U5 Q! W, S* ^" ?+ zset j (j + 1)
' b2 X/ J0 m- t! G) J0 G- X& R1 B7 K]5 Q: K2 e e" A6 ?0 x
set note (note *(exp (- (1 / k)))/ k)
% y# ~" Z; r/ c7 R: C; `* [, Xset credibility-list (replace-item i credibility-list note)
+ h# q6 `: t1 \1 N# \set i (i + 1)
9 P4 Q7 l S0 u]
+ E; _9 _+ l# j3 vend2 X" j f8 u- v, M3 g
6 M2 |3 \- Q3 n2 o) F+ t% uto update-global-reputation-list" _5 P7 V! J4 y
let j 0
+ F; Y9 ?; \2 r( d* w$ f# ^while[j < people]; m4 ]+ F. c- {8 n9 x; M8 B. ^
[3 N+ j2 M% {# {8 n! b: H
let new 0
* w; @2 V$ r0 M0 P/ F ];;暂存新的一个全局声誉
3 @6 l* w- x/ J4 \let i 0
0 ~. V) j6 N$ f; A! J# ?let sum-money 05 ~) w. K2 R2 Q; Z
let credibility-money 0) Y8 g& M- q9 L$ U' D; c6 G
while [i < people]
* g8 ]7 K& u6 p$ [[
; q' ~5 D, V& j( ]set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))- q1 l2 J* z* f) T
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
+ U+ {$ S/ q, C. d9 yset i (i + 1)
) R& k2 z: C" S, z' p! r9 u]
: X W, c9 j7 d; Alet k 00 L7 i" @4 v5 Z8 I
let new1 0
5 U' L/ r1 K9 T: J8 iwhile [k < people]7 n5 A( e1 |' z% E8 a
[: P9 n3 a- L0 W" }( N
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)) a$ S( P0 [8 G# ^% ?8 G q& A
set k (k + 1)
6 O' ]5 C* s0 V]( K* E" c* G8 o5 J
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
+ O$ `- I' R6 n2 h) V: |set global-reputation-list (replace-item j global-reputation-list new)
( F; w* ]5 j* ~- b3 Bset j (j + 1)
4 @. K7 g4 |2 x6 p$ B" J1 \]5 O% j9 N4 U& u& V
end" }' U( G+ [9 O( X+ _3 z
3 a+ g7 N6 k/ N. d. G
: f4 d1 R s$ r" N* z2 `$ l3 k" m$ N8 `+ `" F
to get-color
- e' b) V; L" `- y
" z6 o8 k- x4 T$ c! lset color blue9 e" d+ `5 O4 H% P6 N
end
4 Q+ G0 g9 y/ K! @7 T/ Z: d# Y4 _
, ?# f) z0 L) F" n! d+ a- [to poll-class
. r' M9 N9 @3 s, z* j; D gend. z/ I1 r5 ?1 J, s! o z4 H- [
# ?+ h2 h& `+ n3 [8 H6 x* Q8 ]to setup-plot1
" L: |; H2 I/ r Z: D0 y4 I4 ^+ |# M+ |+ d
set-current-plot "Trends-of-Local-reputation"' n( ?+ u: j6 M
6 _+ L0 P3 ^) [$ ]6 zset-plot-x-range 0 xmax& l1 @; _5 e) W: R
& U& `# _8 ~" m! ?4 B* C4 Aset-plot-y-range 0.0 ymax6 s: K/ P! L5 h
end( o! }5 Q! C. k: s
6 o7 R! M7 s o: \9 w$ c
to setup-plot2& _8 e' T0 J; v* g8 G
0 s, g; j! [/ P5 `( r W' aset-current-plot "Trends-of-global-reputation"+ a, V1 Z+ \0 V7 u: N; i" W
2 |; f9 {0 G) b- c0 qset-plot-x-range 0 xmax) K, l2 E" O" z. |7 \; b
; J. U+ G7 l3 O1 x! zset-plot-y-range 0.0 ymax
& n8 O. {3 L) u0 \0 zend
3 O' w( r/ r* k) Q, U( c( o( g$ g4 L2 T0 @. o
to setup-plot37 K0 n! n4 U+ x7 h! E6 I2 c5 M
& C' ] K3 Z3 _# i# ]7 g+ n. O5 o6 ?
set-current-plot "Trends-of-credibility"
9 W# Q8 Y7 v5 v$ y& K, K6 L' A8 _" q0 s
set-plot-x-range 0 xmax: ^. ]3 z( \) q1 H1 u% d
+ [1 L& z5 u9 R
set-plot-y-range 0.0 ymax
& G+ I8 ?: J/ t1 ~( Xend
9 y# |3 l) g( N0 q
' ^4 q3 u) j- C: E4 c8 Zto do-plots
/ _- j& y$ l* L jset-current-plot "Trends-of-Local-reputation"' I* n; D/ {3 a0 x% d
set-current-plot-pen "Honest service"! `) ]5 d. g- V. G* w; e
end3 l4 [5 p K& S5 Y. t* d
2 e1 N& o# ]* a7 B" V0 }' G[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ] |
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