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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
# J( `% ^- @4 c: ^globals[
+ l; ~, g& [0 \- axmax
& s3 ?( W( C/ N& J3 V0 \ymax8 e1 U" X: ~3 J& V! v4 x {( s, T
global-reputation-list
1 W0 ^' l/ q( C1 v2 f: W+ l2 Q' E+ S: `# _1 e
;;每一个turtle的全局声誉都存在此LIST中" e- ^7 Q" o8 i& z0 ]+ z4 q4 ~+ O% V
credibility-list
3 w& U4 |) H/ l;;每一个turtle的评价可信度. m- ]- T$ ~) D3 @) ~
honest-service
3 @4 l. S- f( ]; ^0 ^unhonest-service
5 B$ j: v0 p9 j& q5 Z" x7 a. ooscillation
$ G3 s4 V+ p: s' Frand-dynamic
, ~* A! z! Q5 J. d. Q/ h* W]
8 o8 d6 y6 z2 P. J: K4 ]
8 F! S! S0 u' jturtles-own[" ~' c* ^ J4 `# C
trade-record-all
% W$ Z# h) |$ p;;a list of lists,由trade-record-one组成9 X% u/ ~6 m9 {, m) K7 H
trade-record-one
% g1 e5 c! w; K' y# Z- N;;list,trade-record-all 中的一个list,作为暂存用,记录两个turtles的交易记录
- U4 R2 T; W% ?- ~4 \) {, s
' x- u R3 W' U! T- z7 \1 l;;[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]]# w' ]9 j. _* a5 {8 V8 }) i
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]& Z7 W M) F8 X$ W' Y, q$ J& T
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
; o% q- o( J; nneighbor-total' Q: r) q7 d( ]1 @6 s
;;记录该turtle的邻居节点的数目
. C2 G9 ?) J6 h( gtrade-time
( G/ ?5 f/ T- s& [;;当前发生交易的turtle的交易时间
& X# D7 b: p6 U2 k" Yappraise-give
! C5 X! V3 D% Y( x( ~;;当前发生交易时给出的评价. o" K5 k# C! @
appraise-receive8 N+ m8 V5 w5 J0 g( _( N) u% N7 y
;;当前发生交易时收到的评价& ~+ ^) h7 n* K/ t, ?
appraise-time# d5 T% M1 |8 `& I/ h
;;当前发生交易时的评价时间( {2 X( O7 z G5 X% u
local-reputation-now;;此次交易后相对于对方turtle的局部声誉+ i- ?- k9 H) Y; h; d' J
trade-times-total. U" f+ l9 H/ H T$ J9 a4 b
;;与当前turtle的交易总次数
$ \( i" C" z6 @+ E& b9 ^trade-money-total
2 C& ~$ E$ j9 A1 X( M5 i;;与当前turtle的交易总金额
; W. t4 J, B1 G( E+ U! q, a% blocal-reputation
5 R4 x; o: Q! a4 e% i/ R4 x; Xglobal-reputation! U, ]# e, T/ E0 G) c4 t
credibility
5 F' J( @8 K6 V;;评价可信度,每次交易后都需要更新5 `3 a9 B6 b0 r# [0 o. z' X5 j
credibility-all
/ Y6 H% @. v) [* p) g9 G6 X* W;;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: G2 u. u- {6 ~% h( B' r
+ t- P4 l' R' K
;;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
- ^7 b$ j! N# g" |2 N4 ucredibility-one$ ~; \0 ?: p: F% `
;;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: T ?, Y* {$ R& k
global-proportion
# w5 D ]! [4 R$ U& e R# hcustomer
$ c3 I% N$ ~ c$ v. W- Rcustomer-no
0 k% c. f. ?+ o6 e: |2 V: Mtrust-ok4 {+ f5 E' J% J
trade-record-one-len;;trade-record-one的长度) X& m( S' k) I# S: m+ w; Y9 i+ q
]1 F" Z( U5 ]( A$ i8 J; o' v3 e8 |) x
7 T3 O& M5 v3 g2 c! D( c9 J+ z;;setup procedure7 E* i z0 k9 x% R+ K8 O2 s: l/ c( L* d
2 [: E' H- m) }4 e* o6 L' Lto setup( X$ o6 G. [2 P+ f
2 p/ _$ u" k' ~* o2 C
ca9 `% l& n8 z: s% l( k+ v* G
0 y) _" N4 U5 E, V1 B0 cinitialize-settings& @9 `: M8 r0 w
8 s; v7 K6 {$ T# ?4 w. j2 G
crt people [setup-turtles]
: ~0 n8 \1 ~3 G
3 `9 l- H0 X7 oreset-timer
/ T# _" Y2 I5 r3 Y) s$ h; x+ E* A
: ]% L8 f& R$ ?4 L6 O8 Ipoll-class
5 g- u- `/ R0 B) |& Q
: C3 i4 I" |1 z! n* v( ]setup-plots
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do-plots$ N% f6 ~1 @* m+ Y/ K% I* x; p
end6 V" x; t$ z, H' ?+ Z% t
@1 @4 X. E# h, ?& Cto initialize-settings X* u/ @4 c! \% X9 y- [# a
4 O* c# Q6 M- {6 ~set global-reputation-list []
+ W/ p( j4 x! y& u6 r9 P% j# c( l9 l' J4 n& t7 `! E& }& g {
set credibility-list n-values people [0.5]% ]1 G) b w; G! E8 K6 U+ j
) {% G8 S% O+ Lset honest-service 0: x2 B1 G$ a* | i5 Y+ \; w' r
( \! J- S: T4 n" E. f
set unhonest-service 0
6 s3 q5 ?# K8 l; S( h! k& Q
5 j/ }! Q# f$ K }5 K. I) ^) vset oscillation 0; A8 f3 {7 T* B$ i' A6 H
, @3 e# L& Y9 G1 k+ f$ H' d" tset rand-dynamic 04 l# Z5 M! m0 Q' |& h
end( e: Z9 _0 G5 h4 Y9 d! V8 b
% G: E2 k7 `2 X: g1 w e
to setup-turtles
9 C/ l* A: g& [set shape "person"
8 B& l5 t2 c$ C( r5 Jsetxy random-xcor random-ycor( c5 k4 s. k2 c8 Y9 }. D8 z
set trade-record-one []' l! C' G$ y, A2 G: a
* C% b3 _9 F: I2 k+ k0 Q# xset trade-record-all n-values people [(list (? + 1) 0 0)]
8 x4 a4 F, L9 g1 s
+ p" y- N) G! S7 L- ~set trade-record-current []" q* h. b. M6 T( F
set credibility-receive []
( [ \7 c3 Q; K7 ^/ h3 C2 N8 cset local-reputation 0.5
5 f/ C/ C1 Q) h9 R! I' l: zset neighbor-total 0 _6 h8 h. P5 s P
set trade-times-total 0
( C; n6 N+ h7 n4 Q8 Oset trade-money-total 0( P+ H. O) ?- ?" F0 w
set customer nobody
* w! E6 b3 F5 L# l, v4 }" kset credibility-all n-values people [creat-credibility]7 b ]) F0 T! Q$ l
set credibility n-values people [-1]
# b) }# F6 L N* uget-color
: R% }) ]: ^ D8 x' ~$ z5 R1 R" o* w% o
end& y: u! q- G! j3 |1 D/ [
7 x* N1 _4 N( s3 @2 a+ t* _
to-report creat-credibility% a# u2 ]0 u9 q6 c6 d! j
report n-values people [0.5]
* t8 V( c' v) J% C9 zend
: R6 O1 F$ x( F: H& W; B& d- v# S$ u, P- a
to setup-plots& a. }2 j% Y7 p( g6 k
- z* G$ f4 @# ]" C# ~2 bset xmax 30
, Q7 y1 m0 E/ P4 m1 x" e& Q" O3 c5 X' K
set ymax 1.0
( g; ?+ ~% n7 q5 \& H& ^
s* |6 v- R5 }: D" vclear-all-plots
, A2 M# D( }# q/ p0 T
* u5 J+ }1 ]/ v0 ssetup-plot1
$ l$ B* ], b+ X4 _4 {8 M" _! K0 V
/ V& Z! \: w$ {! Q, {: h5 f0 \setup-plot2
* l# e7 c3 H) Y) v `. i) O5 }! `3 g! ~% d& t
setup-plot3. D, K9 n6 h5 m5 e# h- K
end
8 n7 r; S: w* p# ~7 u. K n9 e. O
;;run time procedures
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" q' X+ B/ A' }( @to go
g* o2 j% J) b0 {* w* K9 F0 e4 W8 P6 f; w8 Q) ]
ask turtles [do-business]
9 f3 C7 {# x) ^ p7 w% Dend" r- C% D. s5 s9 }5 c' t+ N- M& o
5 [7 i& _9 i3 s
to do-business
: \5 o8 ^. Q$ l1 Z* ~7 u/ S
- [0 c2 Q' t/ g$ ~1 _1 z1 Z C
rt random 360
8 w( }0 u; X9 ~4 t3 a7 i
! R1 R) f1 ]. [fd 1
; q" C9 ] g1 V- y' ?0 v
4 X% r/ }$ y0 O/ C, y* nifelse(other turtles-here != nobody)[
* J7 o5 Z) q+ ?6 c" c* N( g' o8 A' ]* f+ O8 Y+ U
set customer one-of other turtles-here' Z. `. T3 T' Z& o% `
5 ?" a7 k2 O/ b: }
;; set [customer] of customer myself
( J% U8 h* s, d+ Q# E1 {: i1 Y1 S5 f3 t" q
set [trade-record-one] of self item (([who] of customer) - 1)
0 j3 D1 z5 V* m2 u+ N. e, b c[trade-record-all]of self
4 L: M4 _# y9 |7 f;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
e9 L ^8 C3 b1 A; Q
7 n) v+ d- Z: l N% k/ ?3 eset [trade-record-one] of customer item (([who] of self) - 1)
# o: j! Q' F' }: K# p& ]+ L[trade-record-all]of customer
: n/ g1 q5 u3 x1 P2 Y* W9 ? p2 e( B" s/ q
set [trade-record-one-len] of self length [trade-record-one] of self( o" h8 @( k" t& n
) I; y% r8 P2 y. \3 b
set trade-record-current( list (timer) (random money-upper-limit))/ B: T4 N1 |% a
8 ^, f# M8 L8 task self [do-trust]
5 n* ~0 \( g; e5 P;;先求i对j的信任度
0 C( ]1 j7 p j" q, V7 U$ y6 v/ ?, k" O" n& z
if ([trust-ok] of self)6 [5 O6 ^ h8 n% V: i
;;根据i对j的信任度来决定是否与j进行交易[% x- E4 v4 U0 i( m5 j- @% B/ \( \" u4 @
ask customer [do-trust] if ([trust-ok] of customer);;这里可能会用到myself
$ O9 s+ _+ P$ W$ v7 e9 Z6 @. m( D' V7 D- q5 k
[$ n4 o3 @& E* l& n6 i2 n) b# m
8 q% n' ?4 |2 @. a; P8 B7 Wdo-trade
% f) w( q: A/ I2 K3 }" z' s* H/ N. p
update-credibility-ijl; x) `; S+ ?9 @
l0 n- X( v$ uupdate-credibility-list; v$ ^) F9 g. s( v* o/ {2 [
6 J8 W1 D$ ?: p! j7 g
3 h& @7 g& ]- d( Wupdate-global-reputation-list
7 T( F( W$ l6 W0 r
2 k- _- R A" R$ P* Q: Epoll-class. V9 U4 X( f# \% W* R$ Y
* b% I$ \) w" f! m
get-color
$ R' T" I& v0 V% E3 `' j1 B3 Q- m2 `( h* G" E5 B
]]
8 P% \5 p- c$ M& K m* Y/ q
$ |7 S# D& l5 T1 Y' t;;如果所得的信任度满足条件,则进行交易5 G9 |- |3 k5 N$ z$ A0 C ^& u
3 O& h7 D2 T/ R2 C7 Y[' ]; U2 Q0 F4 y2 J/ ^$ O
1 |; o& ^3 c& U' V+ a% v' ?
rt random 360& M: K4 }# J7 c# F
0 z% Z: R8 _) ]2 N% J/ m' s( a
fd 1
7 T# z4 r5 x" n3 V0 k& O% n- n6 L5 a1 E
]
/ l% {* T# t% U( L4 x ]3 p8 m1 }0 E% R! U2 W, ^2 {4 ?
end; s" w( {) a4 H$ {/ l3 O
2 W& K% f4 ~8 h) o' y) v9 O- W
to do-trust
: y) I3 ]" z+ I7 Rset trust-ok False
p1 t* S! U. [3 G8 H6 U7 j- t) e4 m/ W: A/ i3 x* [5 M+ M% s& h* m
+ @" O' m: o S4 y' F
let max-trade-times 01 @! ^2 F1 b7 o& X# z
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]] ` p! M& X {
let max-trade-money 01 V R& R8 J1 a* f9 Y9 j0 D0 p
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
& u1 s# D/ H1 c1 V# Alet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)), U+ u1 P: N, c' K' i- u
( S8 G; `' P! T
% J* U$ [! K$ e2 Y/ zget-global-proportion
) Z8 I$ v* }/ q5 F0 P/ m, ^3 Elet trust-value
' b9 j( P- d8 V$ ?9 m8 v( `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/ M& t9 j3 u/ ]/ |if(trust-value > trade-trust-value)' H, j( e7 p5 @$ Q
[set trust-ok true]) w* o8 x u! Z2 ]) ?
end* Q" G& l4 z) S7 v) b' Y- e2 B( Z
5 I( {' z8 v; yto get-global-proportion2 v% C' F$ K. @/ n+ I# V9 ^
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
1 u G! ~' W8 H% B+ m[set global-proportion 0]
& \; v1 \! M" f% y( m+ y[let i 0+ c# B7 Q2 S) P
let sum-money 03 S9 I! x% [* [
while[ i < people]
) d' F: a: \ E[
- N) W8 E( z! d$ w" |4 ^if( length (item i& L$ E* `9 u# @ Y4 P. _3 i3 J
[trade-record-all] of customer) > 3 ); Z; v+ r+ S; Q+ C# q
[& w" h; P" q; q6 S1 `2 Q# ^
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))% B7 T" I+ G+ E' E5 H; d4 o/ L' X% O
]
6 n! S( S' d' U* c4 [+ o]; x) x- o* T9 r7 Y
let j 0' t6 l0 K- o3 d5 l* s9 q0 O2 @& \' j
let note 0
3 D0 [* L5 {' F. g- X( F- [while[ j < people]
% u" q. e b* Q L/ N[
; g2 Q' A: u, B+ \7 m& C+ vif( length (item i
' ^" k. ]5 C7 [[trade-record-all] of customer) > 3 )' h9 U' p( R% u' R1 \! A
[# Z# ^% L6 j3 q. T( f3 X
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)7 }( S3 G1 O1 I( X$ j
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]3 h; m: A( [6 @$ K* w
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]; p0 S1 J8 t4 W" p! N1 }
]
, X5 H1 s( \7 ]+ C: l+ T2 i5 I]
$ `% ^, b V+ L' P: d% G8 aset global-proportion note* ^' Y3 q7 X2 y6 |# c3 ^
]; V8 L0 S6 g6 h
end
- t/ F1 p: m% Z0 G& O/ L* I7 _. D- E
to do-trade
2 R1 G0 x2 o+ }3 P+ A( R;;这个过程实际上是给双方作出评价的过程% F3 v& p# [' b& d. X3 {; B; A. O' H
set trade-record-current lput( random-float 1) trade-record-current ;;本turtle 得到的评价: M0 W0 j5 [7 G; Z- A. c
set trade-record-current lput( random-float 1) trade-record-current ;;本turtle 给出的评价
) O: }* `3 {% d* R: `set trade-record-current lput(timer) trade-record-current
+ U6 }" N" L) v: y8 V2 X;;评价时间
8 E" b Z: v, V) h/ @/ C* `, wask myself [
' J# s% {/ K; ^0 a* L' c* V0 ?/ r$ Nupdate-local-reputation
; R$ _# F7 `4 n1 _7 `5 ^$ |. p8 Pset trade-record-current lput([local-reputation] of myself) trade-record-current: K4 N+ e( w7 i/ ^
]3 x1 \1 J5 L( \8 |2 F1 {: ]) k
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself" ^' z2 ^5 x$ X$ P. i6 A4 ?
;;将此次交易的记录加入到trade-record-one中
9 y6 @' ]8 V2 Y$ m q, D8 @set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)$ i* C1 v. i7 B# c
let note (item 2 trade-record-current )
( \, f* y& W+ y7 b/ J: Eset trade-record-current
8 a4 A% l0 x/ Z3 e% z(replace-item 2 trade-record-current (item 3 trade-record-current))
# A% H. Q0 d5 I5 I" `( Uset trade-record-current
% J* z, n! w# K( X4 }(replace-item 3 trade-record-current note)
& E7 q9 L9 n; ^) P0 J* i( ?1 Y4 S% P7 e
- K0 |, H1 f. q0 m1 ^4 q6 K* r) i
ask customer [
% Q* A- K+ |7 N8 C7 _) `6 |" X( ]0 c9 R. ^update-local-reputation
5 w$ x" n! ~% T8 c1 Cset trade-record-current
/ ]. _) Y! G9 { x5 w(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer)) . q% }' @$ k2 \+ l
]8 F" B2 ^; E0 p; n9 o. l0 w
6 f6 y; P5 `+ A. C A3 L! Q8 y$ U @0 s: m
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
5 p) s( Z6 _+ v" [, l4 N7 m) P ~7 x% E4 O j" u
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
. L0 p% D5 Z' O' P3 l$ o9 T/ g& b;;将此次交易的记录加入到customer的trade-record-all中) I6 w; I; a @. T. ^
end
7 J3 o( X: p9 S! f r' k2 l, L
6 |. b5 \" T. s: l5 \1 q( i0 {to update-local-reputation
* X! a; x6 I, r- Eset [trade-record-one-len] of myself length [trade-record-one] of myself
7 s9 F$ \" _" `* y5 o9 u8 Q; e
! B* T1 J# D! J8 W3 |* X2 ?
;;if [trade-record-one-len] of myself > 3 % C1 d5 z8 y2 {+ U+ M
update-neighbor-total1 b y7 t- G6 t) W
;;更新邻居节点的数目,在此进行, J( i$ h4 ^' z' }% U& B
let i 3% r5 i( G! ?$ w2 w; d
let sum-time 0# i) K$ g v* Q B/ ~9 E
while[i < [trade-record-one-len] of myself]
3 N, R( N; [) S4 c/ V8 l[/ g* y# F y1 d
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )8 F6 k8 ?8 `$ r) \
set i
0 Q5 I8 }% ~. h: W( i + 1)
% _# C6 O; ?! a. v% Q# N]3 u: M6 x% u" V `4 t
let j 3
4 i. w5 ~# j5 Slet sum-money 0
& n0 W) T q+ qwhile[j < [trade-record-one-len] of myself]0 s! A0 H: w' m7 x1 l
[
) u& b7 R0 i. y& z. Xset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)8 P, r4 E1 u {* \
set j
( O( G3 f S; | h( j + 1)
0 P+ ?* {- \. X/ t- `]3 u8 k5 [0 ?4 o$ w
let k 3, }" D3 Y* y2 {/ S& f: J$ {8 h
let power 0+ V% w l, G8 `" ^( t
let local 0
6 d. p$ P( f& n1 g+ P6 ^+ N4 O xwhile [k <[trade-record-one-len] of myself]
& ?: d! R8 ?5 a[
/ c! g W' ]6 s2 |* {0 hset 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) % M& f- I/ `1 W5 l
set k (k + 1)
V/ J y. _1 _]2 F* o9 x& e, G+ Y1 F
set [local-reputation] of myself (local)
! F& w* e0 p7 n& w/ y' W# hend# z: m$ A B$ k7 ^
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to update-neighbor-total. E, Z! ?6 n7 I0 y
6 e) B! [5 L8 U% C* v; F1 `' [if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]4 Y6 _4 k9 j% }" j/ E4 N* ^
% P6 f' s J- D" d6 s/ f! Y5 ~3 K* n$ y5 q
end
5 t4 t$ \' L) w+ q6 Y0 L. n j8 ]: U" \9 D7 i V( \ f
to update-credibility-ijl 9 Y* ?& R/ S) T% ]% v9 s4 k
# n* y6 x2 d$ u* C, f% i
;;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。
~! K0 _9 |! l7 glet l 04 P7 W$ h' g/ \- t
while[ l < people ]) G2 u4 i& z* u. W1 P
;;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$ A4 j+ i1 q6 c+ j( |% n; M
[
, Z* m; Y2 B: H: }4 b* Zlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)2 Q& h1 {; E4 |( R2 k8 k
if (trade-record-one-j-l-len > 3) H6 t2 \0 _7 j8 ]: T$ ] ~
[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-one4 E6 U5 }0 q/ k& u" l! v1 I) z
let i 3
+ {! [9 q% g# P$ k. R& g/ O: w/ j! {let sum-time 0
! @/ n. o. h `$ Wwhile[i < trade-record-one-len]$ {/ ^2 y/ n. W" Z6 o- B
[
! y, Z5 W+ M& h' L9 Eset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )1 e! P% c0 W2 h' o* n6 s, [0 z$ H
set i. D/ x; q& ~# t- {
( i + 1) j( \. b& @/ L3 _7 |, z
]3 t& V+ X3 D8 s! r b0 J
let credibility-i-j-l 0
, W$ u3 V4 `" y- Y" V* L;;i评价(j对jl的评价)
+ y7 k7 S& A; Olet j 3; ^1 E3 t2 g, \, D! J) L, k
let k 4
5 W% u# d2 {( Q% I* O8 Qwhile[j < trade-record-one-len]
( ^1 R) y3 m/ g' p$ K[. Y2 r V7 w% D- z
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
8 k1 d( b$ `* Y4 R# ]3 Xset 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 W1 m+ ]" \0 K5 p1 P) `2 a( M5 Sset j( V& ^( z1 l) k+ W" z% [* d# S9 H
( j + 1)
% m( ^: ~& y1 O/ W]- s. Y: q `9 K2 a- W
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 ))
0 v' \3 W3 R& t
! w1 ?6 F+ c1 E! E4 e* h
2 I' T8 O! i5 ^4 Olet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))/ J' \' R; C% [. ~. O8 _& X
;;及时更新i对l的评价质量的评价
8 k0 S* a2 r* T+ k& X. Nset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]9 @' r" a9 H& X1 m+ m) j! W
set l (l + 1)
8 M* ]' V, J% R0 y& W9 |& }5 f]* u" \/ W- J; J* M
end7 q, g$ H) r* g: l6 w( k
( b3 v7 O5 \& |% X2 I/ ?7 ~
to update-credibility-list
3 q5 g" I1 S7 M. y e3 @# g3 olet i 06 V" ]: i W0 d6 m
while[i < people]
9 H9 Y! S2 E; p, V# n6 ][# S2 B( G. l8 f4 B
let j 01 Z3 j/ X; x, @& I# @
let note 0) D C0 R' Y; x0 B$ k, E3 c
let k 0, [+ t' F0 g/ o
;;计作出过评价的邻居节点的数目
* P* z: @8 M& J w9 e* b5 _+ w2 ^while[j < people]6 H$ v7 X& v# r
[
( H: @1 _/ C& v; o3 v& j! `if (item j( [credibility] of turtle (i + 1)) != -1)9 Z' Z( c: L8 s; Y% }2 e$ n
;;判断是否给本turtle的评价质量做出过评价的节点
* s" [ K% P0 X- L$ G L[set note (note + item j ([credibility]of turtle (i + 1)))) ~7 z: q0 o3 @) r/ H. T
;;*(exp (-(people - 2)))/(people - 2))]
8 a9 H# p' O5 K8 u' e7 tset k (k + 1)
6 F7 i% p* v; e]' R. z* i+ p s- z
set j (j + 1)( M4 S4 l6 |2 ~; ?0 g$ j
]
1 M* V0 ^. B6 G1 `6 z( Xset note (note *(exp (- (1 / k)))/ k)! n: j2 n, V" O0 _4 i
set credibility-list (replace-item i credibility-list note)6 h8 ~! a+ a# n/ D$ x2 \
set i (i + 1)( ^0 ]; g7 A8 A% \) P5 b
], V3 b6 N% U1 V1 K6 [. B0 @; j* `
end
5 T" B' U4 D" F6 Z& p1 l1 l6 P4 W. ~* k1 d" _
to update-global-reputation-list) \: ]2 @# ]6 ?! L' U3 E3 X4 T1 i
let j 0
& x3 N3 B" D7 {5 O0 D2 M& pwhile[j < people]: B2 W$ p& j" y" c* s
[
! y- [8 T. \* h) g- U( W9 X( \/ xlet new 0: u4 P# z2 @2 z; m
;;暂存新的一个全局声誉
+ F4 i; S. P) B# nlet i 0) V( Q: q5 A; r
let sum-money 0
" O' x' h. ?( Y# \let credibility-money 0
1 ~# v$ ]5 S6 @/ B; U- j$ swhile [i < people]
3 b! q" U O1 T& ?( n6 C[
7 ?* v. G: q. _5 b' J2 ^set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))- t0 @5 a0 J5 {
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) t* U' k4 Z8 @3 r% _
set i (i + 1)
: x: D* s; ~; p" l]# a4 P9 {. a; p1 V9 g9 Z) n
let k 0& p6 l5 \! l2 q2 j
let new1 0
9 j8 C0 k! G- T% \: e( ~% M" y' @- Cwhile [k < people]; D' Z. ]& O9 Q4 c( Z$ g
[
( e1 d0 |0 _) A4 H4 z R" gset 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)
# Q- {4 _% Y% z7 e$ [$ }- J* iset k (k + 1)- t4 y0 X' r3 k g8 y* i) w0 w4 N: k
]
3 p) a' P( L) T3 a! ~- D& yset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
4 J# M) q* U/ f& @: Y- Q( Iset global-reputation-list (replace-item j global-reputation-list new)- l; s: n' B" T5 ?! ~) V
set j (j + 1). D$ N V3 @ q6 o
]6 Z$ E, Z/ z+ E0 b) c9 v+ L/ h
end. c- s3 v" f3 s
- I6 K' I+ x+ V" F( J8 k
' k& n( R* t( D* }$ N
, L- L4 ]; P" g6 ] uto get-color
' H v# _9 X6 u0 B8 f6 g1 b) |& i7 n9 c6 D% I- s
set color blue
$ | Z$ F# w4 W# R* L: F% D6 Tend& g( F. o5 I" V% F
# a* D7 [$ Q- rto poll-class
" ^" W y2 H8 ?6 Z) D" o" Hend
7 w# T/ U, d% r- K0 {3 m
: V. q; [& g6 K: ?) D! rto setup-plot19 K& N/ R9 F2 u5 W4 _) M" }3 x
( H0 e$ l1 N' V
set-current-plot "Trends-of-Local-reputation"
/ n( v/ C( c( R# g# A
- Y1 `+ G& ~ h- S+ f2 pset-plot-x-range 0 xmax5 L( r( T+ ]5 Z. e2 [/ e
; X9 P4 U2 ~# p: m
set-plot-y-range 0.0 ymax4 s! L/ L& X C; f$ i
end
) d7 U6 N) B" n0 Q8 a9 C7 e i0 C- y2 _
to setup-plot2. y3 \" y7 E5 {6 @/ S- R
- {" o3 a; H; ?1 j- ^set-current-plot "Trends-of-global-reputation"0 n9 e; G' ]! G: g& P
5 [$ ^+ r, y$ J: a% W" jset-plot-x-range 0 xmax6 v: v6 `8 {- H& L# \ ?, a
3 B2 R; R- j1 H, X: h |set-plot-y-range 0.0 ymax
O7 J, l$ J" c9 A0 p! mend
1 A! ^# I7 g+ t2 c+ l% j
3 P- N0 P+ v9 L) \8 ?2 Pto setup-plot3; S: i( D7 N4 A' [" f& z
# D5 C2 M2 c. E! u" ?$ {
set-current-plot "Trends-of-credibility"
& p, [7 g: T) `" I r2 Y; z6 M1 z7 P; }+ C/ l8 m7 E$ ?- F7 I) i1 w
set-plot-x-range 0 xmax
8 }& x0 n" h8 t5 d8 b! T! d7 D
set-plot-y-range 0.0 ymax+ a" f0 X1 l2 Z, J' v' h% }
end9 u! O, o1 k9 M- a
0 Q [& q1 u2 _: s7 E: m+ \to do-plots/ B" ], U( F6 D6 j8 Q- L
set-current-plot "Trends-of-Local-reputation"
) }1 k/ o6 l% V- N4 z7 E. _set-current-plot-pen "Honest service"; ]4 \& O- Y, |) G; [* m
end
) n' I& c) p* O; ~4 R
4 w/ W1 `% Y" o( ?5 s6 p[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ] |
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