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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
; o3 Q% m/ R0 oglobals[4 t1 w( p M2 y, b8 \
xmax/ t6 V/ G! ]+ j9 g! `$ @8 L
ymax5 \# h: J' s! ]& ^
global-reputation-list8 R# [; T5 i& j7 y/ e- ?8 s- o
* E4 U) j) S0 o$ g" E* t" W;;每一个turtle的全局声誉都存在此LIST中
$ b2 Q) r1 s% {/ Ncredibility-list5 `! o4 g) W$ p
;;每一个turtle的评价可信度
, Y/ @+ [# a* h* rhonest-service
2 `. c! l- Z+ t5 ?unhonest-service9 A5 C$ R" d3 L1 Y6 ]0 i5 ~& y
oscillation
7 s9 h4 `; } x: G$ \$ I. n9 [rand-dynamic+ g/ N2 t: n& [/ I3 O( {
]. F7 f9 }8 Q8 t; i* o) B; q
. ^; j5 H7 g2 Bturtles-own[
2 e3 Q4 v' m# }. {1 Z) E9 L7 btrade-record-all& r. s, \* q% y5 \3 k0 `
;;a list of lists,由trade-record-one组成4 u( [8 D$ @3 ?9 K' d
trade-record-one: ^9 C% k# u6 [* y
;;list,trade-record-all 中的一个list,作为暂存用,记录两个turtles的交易记录 n+ @6 o% m3 A1 e0 P& P# P
[; V8 R$ O, ^; y _/ y' ~7 U;;[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]]: |5 ~( i! }) W
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] u( i7 t1 |' @/ i) 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
* G1 x4 C) ]7 }neighbor-total- P* y R$ s2 u- H
;;记录该turtle的邻居节点的数目, d7 L x- U6 T; D+ `' F
trade-time
% P' T" ]% a4 X) v;;当前发生交易的turtle的交易时间5 b$ N6 b- u p, Y- C( G- X
appraise-give
! c) G0 H% F- l- x7 J1 B/ o;;当前发生交易时给出的评价! I. n1 b; }: R5 B6 U6 [
appraise-receive" O, L- X# i) O0 Y9 S/ U
;;当前发生交易时收到的评价" I& S5 n4 t* P3 A; `% ?* y& i; e* ]
appraise-time
; `) c4 Z, x/ m) T6 ~$ l" _0 p;;当前发生交易时的评价时间+ S7 r" N# ]0 b* B4 y/ r% z( C
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
& i; E" B( X; p+ W; z! R; h/ O) g1 btrade-times-total
; \9 y2 Q% C' G$ v;;与当前turtle的交易总次数- W& }2 {' Q' ^
trade-money-total
/ r7 d# v4 Z0 n3 E1 W: P;;与当前turtle的交易总金额
0 C- d9 k1 Q3 ~3 u4 qlocal-reputation! n' j6 O6 J7 `# o
global-reputation
+ c5 [. ?8 ~6 `% H. I) {' j" ucredibility; [( M X. Z" m: O7 O( c) m2 {
;;评价可信度,每次交易后都需要更新
7 K2 D1 ~) T- [ I- n# I7 i+ ?credibility-all( X; |, a2 p* f; X4 Y5 H
;;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
* g! @* u2 \( i3 h7 H
1 q4 ]1 W/ e% ]4 |7 v/ d! d;;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
0 h# d) n% {7 | u- W8 }1 m' @credibility-one
3 S4 `1 E5 i7 K6 ];;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
# w) ?: h2 @0 A; l7 s) \8 Aglobal-proportion
0 c* z9 u9 ^+ `" ncustomer
( g- W& j4 y1 X" v4 M9 b# w( }- acustomer-no X6 _) W7 ], H6 b6 }+ `
trust-ok, ~2 @, @# @: D
trade-record-one-len;;trade-record-one的长度
+ ]- W* {& W) t/ Y4 P]; |2 w/ L1 {$ q8 O
. X* f* y8 j8 ], B% w2 c
;;setup procedure
7 P$ L* b* {! d @: J# w
3 E9 u% Z" c( [to setup
2 R2 ]4 s( D9 F) o6 y/ |; @
- i# G0 g- I/ J6 F$ k7 R9 Cca
. o9 {1 F7 Q+ }
* g+ y' Y( X- p rinitialize-settings5 i1 ]! }% K; Q7 U
: G& H6 R0 e: |0 v R
crt people [setup-turtles]% H' }( i4 o4 G4 g2 }3 E8 {( ]
/ L$ e4 r: i! o$ F6 ^9 j; G. Z* O/ V
reset-timer4 }6 ~5 j) F1 d/ q6 Y
3 _0 z1 `0 C, a$ g5 ~; F6 {9 D) Mpoll-class
; Q/ Z* J! P! d7 p3 }
/ R& U( C" B5 I Psetup-plots1 o/ K( n* E4 P9 t. ^9 X
# \& K' d+ u- Q# s6 S
do-plots
) q( ?/ U. D! xend8 {3 g8 A- Z- ]2 V) R
: L0 l, I8 S6 ~3 _$ G" Qto initialize-settings! k1 i* [ z$ H
5 P% n( Z+ I) C6 P2 Y+ p
set global-reputation-list []2 S9 ]+ J+ y9 Y1 {9 e N
; E: N% O* t1 Iset credibility-list n-values people [0.5]
' Z4 s6 g; U$ n& `, U, t% D2 _9 A& N! p8 Z% j( c
set honest-service 0$ u% X9 |; u% P1 L' h
8 q: h" Y# g+ e" z5 v
set unhonest-service 0
$ K- v8 I: N( r2 c
6 q l6 x8 d. B a" O5 d; O$ g6 wset oscillation 0( S8 h9 ^, u* K3 n# f* B* ~4 Z
1 Z( T' W, {3 M) N0 X
set rand-dynamic 0$ z& w& H- N/ f
end
6 c* ?; S! d* t; E& _8 f: u! t4 T" M1 J
to setup-turtles
. C) _6 ?! {2 g% v, D& `set shape "person"4 X$ i2 G9 \4 o
setxy random-xcor random-ycor+ \# T8 d! f4 g* T8 N# S
set trade-record-one []
- }" G0 R- X6 y* I6 K: N
9 F+ T7 x# k. B5 x5 o/ f% Uset trade-record-all n-values people [(list (? + 1) 0 0)]
: X0 e+ ?) E2 v6 |+ }. h8 p7 \; s2 A6 R- i- H2 r
set trade-record-current []+ _/ s2 P. g; S7 {5 K
set credibility-receive []
" A. E9 b* q3 q, e6 Jset local-reputation 0.5 K4 q: w' ?8 j7 Y4 i
set neighbor-total 0
) e( u# s0 U I0 rset trade-times-total 0
/ U2 ?6 c0 o" ^/ v5 V E" Uset trade-money-total 0
$ Q' A% E0 @0 X |0 `set customer nobody
) g2 {( J, }% L8 _set credibility-all n-values people [creat-credibility]
% ~7 R5 H5 G5 ?- ]' r, kset credibility n-values people [-1]
$ S$ x9 K/ O4 T6 L4 r5 Z* zget-color {7 a# @6 Z& Q4 u% m& @3 y. `
. S" h4 W3 [% t
end- F8 {# |" G) `6 b6 Y
& j9 L8 ~* U5 P! }5 ^
to-report creat-credibility
8 j. N f& t( T! P& a" Vreport n-values people [0.5]- Q7 v7 | j& w- f
end B7 H! R+ C, h0 R/ m; k" g
, I- b; @9 S& Y! b3 @% a' E. G! \4 bto setup-plots
: K2 S! q8 }1 f0 }8 l
! M' m* t* S1 H& vset xmax 30! c t! ?/ Y6 j4 T- m) I
4 _( l( N6 m+ ~; w: p: s
set ymax 1.0. Q# O6 G! \5 ]$ v+ J
l, j' k7 F# o& U0 H' G e9 t% x
clear-all-plots3 d" ?7 O3 h6 C( }3 O
# U+ Q$ C$ J/ |0 G# S Q4 s" Tsetup-plot1' ~* n* n7 ~! e7 @
% d. O/ ]8 L+ `9 G: x, f5 I6 ?! Csetup-plot20 W! K* Y! |$ L
5 e/ M* R; A2 A* A& Psetup-plot3) ]0 }% c* g+ Z9 [8 i5 k4 L5 H
end
: A( Q& _* w9 \% l! Y( ], [) }% l; e
;;run time procedures* q- x* k- M2 |! W
6 B' }+ P* I3 E8 Y/ rto go
/ ]4 p* s, Z2 H: H0 d' J2 f6 y, w# {% @
ask turtles [do-business]
9 O, h) U6 z" Eend
$ R) i4 K' r4 `& \
2 r! W' k2 A4 E! gto do-business
; H6 Q3 r( Y1 ?+ Y# {2 W: J$ b- S& Q
/ \; v6 @5 t# \/ x* e. n$ v6 E5 a8 B
rt random 3608 X( d/ R0 e- e+ \8 |7 r
7 K) u# ?$ y2 Z9 }, f. D
fd 1
& l4 X. L5 Z$ ?" B0 V0 @+ w: h4 P v3 @+ [) x
ifelse(other turtles-here != nobody)[7 f- s" L" V0 E/ i. Y( A8 @' e0 ]
+ ^, X9 b7 A5 t4 p
set customer one-of other turtles-here8 ~/ d+ x5 h1 K% F3 P' w& b+ w" a
+ @) \" N& m3 p+ N( v+ r; }% n% L
;; set [customer] of customer myself; ?1 w0 r9 D2 q# M9 @
e1 O( Y! Z% ^$ A
set [trade-record-one] of self item (([who] of customer) - 1)
+ h: r: t, B& R8 x' i e8 s[trade-record-all]of self h- l8 x( T" {6 w+ Z3 f& A
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self% l8 \6 ~" H" V0 s4 ?2 T! e6 Z; |% y
% d+ q) z }9 y3 y. _. K2 A4 vset [trade-record-one] of customer item (([who] of self) - 1)
5 L: M) l# l4 j2 L0 N[trade-record-all]of customer/ Q( R# L+ f c9 H. X: j0 o4 |$ a
* E4 h/ _ h6 h; i& Q+ Bset [trade-record-one-len] of self length [trade-record-one] of self. ^+ u6 g6 W( Q" { i! }
9 R" k7 `' s1 j' ?
set trade-record-current( list (timer) (random money-upper-limit))% A. L- Z+ F& `' l# b ` j7 X+ ^
: i4 q) y0 l* C; Q# P6 I* K1 _
ask self [do-trust]
. y/ X0 a! x k# U7 [# Y$ v- A;;先求i对j的信任度
l* r4 l" o8 x( j. `) a& ]' L; Y
8 [4 L/ _/ b2 Vif ([trust-ok] of self)
7 j0 S8 F: F+ ]$ G8 Z;;根据i对j的信任度来决定是否与j进行交易[* e8 e+ D% F9 G" u
ask customer [do-trust] if ([trust-ok] of customer);;这里可能会用到myself
* _- ?" J# M- S4 s3 r o. H& Z6 Y9 ^4 |& x8 h
[/ v6 T9 o% u! u6 E
/ y& P2 b) u$ K6 X9 Z, a" x, }0 Odo-trade+ {, e) j; l# d2 G, o
) J7 K0 [4 _$ C# a+ M, e3 `3 ^8 }! A
update-credibility-ijl5 a( i3 W. p* Z( v3 Z% \* J
, X8 F2 P# G: W* ]+ H2 a' d' l
update-credibility-list
5 _4 v: S0 y+ Y; U4 d. V* B- f: t% i" ?5 d# Z! p8 @
/ M, M! Y+ D: O. g
update-global-reputation-list
5 g( w H e0 l- |0 _
5 i% P- L) _' ]" L+ m4 r6 dpoll-class3 M4 N& V( [# S1 @3 o e: B
: A) z, U9 }/ O1 D% r# q0 Pget-color! E" e1 z' m. f" P" Y1 }
2 p. M1 S1 _1 b" {: m. y1 l]], A4 L2 ~- |9 R$ `, j! Q0 y
) }5 ?1 d4 R t) D" o3 r0 B% ?;;如果所得的信任度满足条件,则进行交易, @; P3 s( d; i! c" _
' A M3 q( ~- [[
9 o7 Y Y6 T. r) g, ^! x3 k# N% |, E5 v* x: h
rt random 360/ }6 T" ~: }& ^6 j9 Z* C* X
2 Q8 V$ A) w, t- Bfd 1
5 ~% N/ l7 R5 f* C0 g/ w: R0 u/ e
~7 d) z4 i: M b: x! w2 u]
0 k7 } R* N0 ^/ C2 i- y S: `1 @
& w& `& d# A3 c' ~' H$ f; wend2 P# a; V1 \ q
6 S- h6 ]( W( K; F8 h
to do-trust
# n" d/ O+ n- c& B5 ?set trust-ok False
$ K0 k* ?5 U+ W& g+ N
7 |; q1 U- X" c6 n1 ]% K7 R2 } C/ {
' S! {* Y( K0 _8 d5 V/ ~let max-trade-times 0
! [5 C3 t& y" @+ U9 }8 Tforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]- e3 J1 M# m' H4 o: I( v' Z# ]
let max-trade-money 0
; E( Q! a; Z6 u1 Zforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
$ V: o0 Z) r, elet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))1 v) Q5 S7 _/ e8 `/ x) t
4 }) k7 I! {- u% |0 T& U/ \/ l2 c. K6 A( T+ Q1 Q) R& ?
get-global-proportion; h2 G# u: l, F
let trust-value( K" f4 I5 K. ?# p$ G0 F
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)
8 g; R% r% p/ n$ W+ bif(trust-value > trade-trust-value)
# T5 f) t% f+ Q7 X% G[set trust-ok true]. J; @' W5 Z. y# {+ j5 }' A! [! g& K
end
+ {$ D8 e5 n) Q& J) F. N- F" ]; m) e# i% ^3 b q4 G
to get-global-proportion2 E2 U9 a/ n* e `: y
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
: n' S. x6 [/ W! A3 B$ B[set global-proportion 0]
2 q1 B8 o! z9 y8 e4 @) S[let i 0
5 V7 [; k( m4 Z1 A3 x& [2 alet sum-money 0
' Z) j% Q0 e: ^; iwhile[ i < people]
+ M2 a4 B5 f! ?9 Z2 K) `: r[: u+ |! T* `/ j
if( length (item i
) F" J( U; u* ?+ ?* [[trade-record-all] of customer) > 3 )
" D. N/ \8 J5 |' C[4 X4 t5 V- ^) i1 ^9 O1 b' ] ?! Z
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
* m7 L4 g# A% x& q]: d' @+ _& E( W9 I
]
0 m2 ^; w' B5 ]$ `; mlet j 0
, p/ G3 U0 Y! h; [let note 0
1 d! \- Z3 d! ^while[ j < people]
1 T, Y1 v, f6 {[5 e/ I/ n1 w' O5 n
if( length (item i4 f2 [' A/ d8 g3 t1 }0 Q8 w
[trade-record-all] of customer) > 3 )! l8 W% q; W1 n
[: @/ `. t0 e- O! V
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)7 t% D6 U; g9 M) v6 n
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]6 [2 L: M6 R5 n
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
" n: s) ~8 \+ f4 {2 A) C0 |, E]# l! J9 Y, S( F; Z
]4 w( A' z9 w! Q; m( R% O g
set global-proportion note. k" D) r% ]* `; @7 u4 g! Q0 ?
]* \% N4 f# e" j0 v
end
1 M9 z/ y4 u3 V4 p( s, D0 o. o/ K% f7 E& e& Y' r0 u0 h
to do-trade& N) _3 `9 G% `$ ?0 S" `8 y
;;这个过程实际上是给双方作出评价的过程
( Y& k" j& ]+ ?; I6 ~4 h4 C1 h& Q; Tset trade-record-current lput( random-float 1) trade-record-current ;;本turtle 得到的评价
7 B8 M9 f/ g2 e5 e7 qset trade-record-current lput( random-float 1) trade-record-current ;;本turtle 给出的评价7 J* r ]% h- N* t) a! j
set trade-record-current lput(timer) trade-record-current" B8 b. ?8 P, d4 L$ `0 ^
;;评价时间& d2 m( h4 k( `2 e7 X) w* v
ask myself [
8 z5 R# m7 _. B1 L! L4 D, Xupdate-local-reputation9 a* \8 T, b e2 c
set trade-record-current lput([local-reputation] of myself) trade-record-current9 v' X8 X5 m, L& V Q
]# b3 x: ~& m6 q; d
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
8 m' y6 [( F% ^ M;;将此次交易的记录加入到trade-record-one中3 \2 Q( C# @, @, j( F0 }# t! _% j
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
8 I. l3 {# G6 h* i! ^4 E) I/ |let note (item 2 trade-record-current )
' @& f7 M" y( A% F/ i- ]# y2 l& ]set trade-record-current7 w4 I! P6 g- R$ Y
(replace-item 2 trade-record-current (item 3 trade-record-current))) ]9 o6 n4 |- g {4 h" _
set trade-record-current7 Z$ p# b, l: ~& ^0 k
(replace-item 3 trade-record-current note)
8 `2 a# _$ B1 R3 r5 X& T8 y
7 n0 V5 H; w0 f9 G+ B
: j0 T+ E5 Z2 [3 Eask customer [
" j# N* b( B3 F7 X( eupdate-local-reputation4 s/ ]3 W) t1 G8 E2 z {' J
set trade-record-current
( {" {% y7 E6 L# h(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
0 a( R" E4 z8 l y7 A0 m( B]
1 B& n$ Y1 X7 T- d& [6 r0 w
6 s2 y0 ]( W' ^3 N* d$ e
' n* n% I* {' ]' R( yset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer" p5 E2 G3 h7 c% j# }) |
6 c% J; _2 E( {! K# x1 ^
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))2 D7 {8 k. C E* d+ t( K
;;将此次交易的记录加入到customer的trade-record-all中( Y5 l: y* @) o2 O5 p2 [
end3 |9 ?2 K% e6 ^( i, L
- n! ]5 p2 W0 }5 b/ d1 I0 fto update-local-reputation" V! h0 q. p# n+ s6 N2 i$ f
set [trade-record-one-len] of myself length [trade-record-one] of myself
& b4 L9 O; \+ }4 i% \ k0 t
P$ m2 {4 S7 W7 A- c8 k
3 l: D/ [- B" {; Y;;if [trade-record-one-len] of myself > 3 r# g, g% y8 ^+ l
update-neighbor-total& P8 z1 Y) {3 u- V# g. v
;;更新邻居节点的数目,在此进行
$ R4 M/ c4 n2 o5 v4 xlet i 3& l% H9 z& _& I. j
let sum-time 0% u7 ?) o+ ^2 `3 O7 H+ x: u
while[i < [trade-record-one-len] of myself]1 Z$ [3 ]5 E, w% A
[
' s0 W! `1 _- W' |1 fset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
Z& U$ T5 t9 f2 Jset i
6 t- K% ?8 z& m. p# V, A9 _( i + 1)
: Y( K% F4 N) O k" F]
4 `* b% C" @/ |( K9 p% X' Vlet j 3' l3 g" Q1 c# _: w- M
let sum-money 08 w# _8 u& s' w0 F
while[j < [trade-record-one-len] of myself]/ k( _$ A7 }+ S) z2 j* q& i
[
) G" m% j% A V9 x/ A$ vset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
; R) q p' ?' z8 }9 X! Bset j
4 y# N3 R$ Q) f! ~( j + 1)1 ^- A' R* S2 S' ?5 q
]
b. y/ J) c M: B/ k: xlet k 3
) H# c1 Z* i$ u Olet power 0. r: T0 ?/ B9 y3 z& p
let local 0
& K- \9 g9 V" O" ?: ~while [k <[trade-record-one-len] of myself]6 b5 M6 G( ]! u% C! A7 ?
[
S8 v: I- l# N: Q: s$ o1 ?. Dset 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)
2 }5 c# r$ g Y; n6 E" t8 ^4 f$ mset k (k + 1)- Q* m" Z- J8 l( E; q3 ], v3 F2 `( U j+ a
]
5 R/ K3 W+ q- P$ oset [local-reputation] of myself (local)
9 h( Y5 O3 M x# q2 Bend+ }: f/ A9 m* Y+ I, y
+ A" k8 I9 `( E, a* rto update-neighbor-total
) n, G4 K: U" i( a) |+ R& h% B! ]/ U: {" O9 S2 t
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
+ h, U2 d$ F! s: x- \) T* |) H
) J7 [* a! G/ A6 d
P/ Q! V2 P+ [4 I1 A+ R! ~' Jend
* X) `" ?3 Q- o2 p k5 W9 P# ?0 ^5 o9 J0 V
to update-credibility-ijl ! r) U; t' G3 a
. _3 F" G# j$ s( }6 s;;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。
# E! C: H, Y! m5 r( Olet l 0
: ^9 q R, Q4 Q# ?, w# P3 cwhile[ l < people ]
; X$ V2 O) c5 M6 t4 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
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let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
* T3 U4 z' j. u x) |) q" b# Zif (trade-record-one-j-l-len > 3)
5 A/ ?% H$ S4 D4 C[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
0 G* H6 v; ~, Elet i 3
! ?2 _0 [3 n6 ~' b7 llet sum-time 0; i, x1 g' j1 D
while[i < trade-record-one-len]- A& e% D7 z. R1 G$ y3 S" j
[7 Q# C z5 r5 d+ V* K
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
4 M# y! H; D' h& \0 ]set i9 d! g) ^/ r2 X' g# }6 `
( i + 1)
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# ]$ n* n/ M+ X7 i& |% \# ?, klet credibility-i-j-l 0
3 M: W; k9 J- }- C( W* m;;i评价(j对jl的评价)% D) g% R% \4 l7 @
let j 3
; T0 r! }: y1 Y" b" f5 klet k 4
/ `8 f* l% ~0 Q. Awhile[j < trade-record-one-len]- F, {. d! ?6 V, y9 p: C9 N
[
/ A0 f: ?4 Z4 z- n3 p# @$ g8 Mwhile [((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
" v9 Z! b& V" S+ a/ M/ b, hset 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)9 U; ~& e5 B; r _
set j( k7 ^+ i4 i: Z" ^
( j + 1)% ~' x8 V) i* k* i
]
8 M& ^5 @% v* Iset [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 ))6 D3 f1 l s: i
0 H3 \: t0 U0 Z1 p
: y1 L' s& G i9 Flet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
4 C. ?4 C( _: r# U1 o; T# q;;及时更新i对l的评价质量的评价6 \% m V$ r5 G: o: D8 U: H0 G
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]* E) B3 w- s7 [
set l (l + 1)! i8 S4 q5 ~2 G9 l. ?
]5 J1 n+ d, |' f6 x% D
end
# k# _8 U& k+ O O6 d8 b; _( o- [! d3 E2 T) v( z
to update-credibility-list" ]- A9 y6 Z, `# b$ N% g4 z4 S
let i 0
# @5 g3 i5 o- `4 ^6 s: Uwhile[i < people]) d) f5 E. R/ M4 k: l
[8 P. |4 ?" k1 p+ Q- g7 F% s
let j 0
7 T% Y0 i2 k9 Y1 h! Olet note 0- a# W* z5 S% X' |8 z( M0 U
let k 0
" ]8 F8 W6 q7 l0 Q;;计作出过评价的邻居节点的数目, I6 z$ K; i3 Y8 v3 |$ f0 P" m# C
while[j < people]
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if (item j( [credibility] of turtle (i + 1)) != -1)7 ^6 F% n, m- {* ?9 _- W6 \, ^1 D
;;判断是否给本turtle的评价质量做出过评价的节点2 U* f/ f# x" m. s
[set note (note + item j ([credibility]of turtle (i + 1)))
2 L* C' e E5 b. Y;;*(exp (-(people - 2)))/(people - 2))]+ m `. s; b* ~$ ?* o5 J" d
set k (k + 1)
5 C( M5 P* b3 \]* [0 U3 h `% z9 S4 X& y
set j (j + 1)
2 \& r4 R5 c8 C+ n l; B, R* F( }3 R]0 f: _: y1 f9 l7 {/ u
set note (note *(exp (- (1 / k)))/ k)
/ c0 a2 a/ o3 C; C, Wset credibility-list (replace-item i credibility-list note): j8 |1 n5 a5 c5 Q7 E% x/ }
set i (i + 1)7 g$ V: V" X$ L
]
1 \& c. G' r: bend
8 Q* E: C& ~3 e) `. x
' N, U; ~/ h7 F# M* g" bto update-global-reputation-list* n$ ]* Z) a, |. n, R- V" C
let j 0* l& _# F4 ?' @- s0 D$ H7 V
while[j < people]: t9 S8 b9 q1 m1 K% q4 K; p6 Y
[
/ d# H7 N7 F$ Z0 m* K( Clet new 0
% r: Z; ~; N. N. }/ ]. U" S;;暂存新的一个全局声誉
% [2 c* C& A2 B% E6 Nlet i 0
2 H, q! I# a$ v" X" }% Clet sum-money 0 }* N- i5 R+ K5 C/ p9 P4 S( ]
let credibility-money 0* x d* ] I+ ?
while [i < people]3 w- K2 e/ K$ q. ]) J
[
/ O' u- ]* E, `0 k# S8 K4 kset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
9 l9 B; [- F0 s# ]# q/ p8 c7 Rset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))# {, ^4 L5 g. B% z
set i (i + 1)
, _+ W% k! N, k+ B( J]
^4 z' V# N+ w1 ^' alet k 07 Y# z% g N8 p% C+ T& R
let new1 0
1 _/ H. V4 {7 n3 J' d7 swhile [k < people]
$ G0 E$ L/ W* Z[
+ Z1 R" z# K7 d/ J3 pset 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 S1 k# W0 O( Q" L. [set k (k + 1): k( G: O+ P1 \) c( o. ^/ x# Q
]1 O' r2 Y3 I& f' U. ?! M" d
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 5 k" M& Q% [; x/ m" X7 x
set global-reputation-list (replace-item j global-reputation-list new)8 O8 \2 G* d& e% l- b; Z- W
set j (j + 1)8 d1 Y) `' d3 l) a5 a; m
]( z" a6 S" Y$ G! C2 T6 g
end3 k: q0 ]! Y6 a' k2 W p- L
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+ x/ R. V9 J- w! e5 \! C. p
# e+ N; u& ^' B8 F% S4 vto get-color5 I* Z$ p( k0 e0 I" R
" O- o9 L. x( ^( k8 E6 Z
set color blue
5 I" r* b0 p# n {, J- {end
" h/ S* @+ P |( Y$ o; U8 Z4 Y
" N1 @% c$ M* N3 I! o% c9 E8 Dto poll-class
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- ], G6 J2 h2 K: W: m+ z* ]
to setup-plot1
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: j( X; l/ p% X8 K2 Uset-current-plot "Trends-of-Local-reputation"7 |9 s- ^2 N, B
4 f5 t, F) d, O9 w0 d. Q
set-plot-x-range 0 xmax. H* b- U+ c2 c6 `1 n
# C$ P* ^9 o: {$ u; Y3 Y
set-plot-y-range 0.0 ymax. }5 ~( v+ ^2 [0 H
end
* U! B& J. f) b: H" W
3 l' u6 |9 K ]; J( C5 m( Bto setup-plot2
& |4 c* G' K8 P6 `- T# u' v4 ]5 ~8 H: V1 B* E. B& ^
set-current-plot "Trends-of-global-reputation"
( ~9 F2 J3 G0 p6 C4 ?( U6 V
5 I' D& t1 I7 B% O" |( vset-plot-x-range 0 xmax. S0 }! d) B9 M/ {5 j/ X
9 R# T7 b& k$ g6 e, \set-plot-y-range 0.0 ymax* {2 h2 C; q0 T* V3 i, `
end* M2 D6 P8 n/ c
: x0 }2 o5 F9 u7 }: _) z
to setup-plot3
2 k$ G: ^1 t& b
1 {) q; K" G/ o3 ^# M6 @' ^set-current-plot "Trends-of-credibility"5 O, e: S/ f2 U# T& I
; S K) c4 u2 k' ]+ f
set-plot-x-range 0 xmax- h6 o' P4 _( z/ Q# \% a2 j& o: [
1 j# Z+ i# |9 ?6 W% mset-plot-y-range 0.0 ymax
* E! r1 I( r S- {2 ]4 w1 kend, H7 Q' D6 }7 Q7 _' x/ H' ~- N
$ V, N& E: H2 P% @9 `* Q
to do-plots& r- E, \7 }. G
set-current-plot "Trends-of-Local-reputation"
; a" j( @3 C* s1 |# tset-current-plot-pen "Honest service"- ~; g% t2 Y7 Z' y' |& W! _
end
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[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ] |
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