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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
. G! j8 N5 m: G+ Eglobals[
- u9 G0 Y8 N# I& z0 @xmax: C3 ~6 F/ \2 `
ymax
; |! d& s. p! N [4 X: l* Bglobal-reputation-list' P$ r1 t$ D' [2 \$ T, ^1 \$ ^
* z+ z1 L( r5 s;;每一个turtle的全局声誉都存在此LIST中9 o/ ^, T6 t; Z0 \
credibility-list
. A- k8 {9 A$ d1 }/ v) y;;每一个turtle的评价可信度. ^+ b ]& p" N* n: T" g/ ^
honest-service/ O% o( {* l* H" V
unhonest-service: o; N& e- c; |: z% g" V, N" d, `$ j
oscillation
6 x0 L- R; h$ B( I1 ]3 T" p( Y1 [) orand-dynamic
$ A& D1 l$ \# `, q+ X/ T: i] T' A [$ F! E# {+ [# I
; ^1 k9 t n$ ]8 i" V1 ^% `/ Z L6 Q5 X4 D
turtles-own[
. O4 K" u% k4 h& A2 N, s* \% ctrade-record-all* j7 a0 d& f4 j; y9 o3 s
;;a list of lists,由trade-record-one组成* q1 o5 d/ p4 f$ }
trade-record-one% V$ |# x' r; z( g0 B4 U
;;list,trade-record-all 中的一个list,作为暂存用,记录两个turtles的交易记录% I7 x; F9 l+ q; ]) h
) N* y: @6 ]8 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]]! x( k; X# I1 a z) b: J
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]
( [! n t2 y8 q$ @) O0 mcredibility-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
- |+ n N8 O& Z( u$ [" qneighbor-total% p2 J% U1 G9 t* ]: ]1 ?
;;记录该turtle的邻居节点的数目
/ K, i0 n/ \7 _, ^$ \trade-time8 D- ]- B( i) _4 `. V$ L( a: z
;;当前发生交易的turtle的交易时间
# g) \" \6 Q2 Z& H( Uappraise-give
) C# N, V0 M9 j' O% ?; p, Y;;当前发生交易时给出的评价
0 g1 q& Y3 r+ f9 iappraise-receive
$ e1 d3 p( l3 E ^& n$ g;;当前发生交易时收到的评价
9 |' m. I% Q: _( w: |appraise-time
. l3 v# d7 K4 a& O! A0 S;;当前发生交易时的评价时间
0 T: z) K* d5 nlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
f2 [7 X: T7 t5 ^. B5 Btrade-times-total+ m4 Z0 R/ f) i* X% x: m( y
;;与当前turtle的交易总次数
" }( n4 M- [: Vtrade-money-total. e {+ d& s, u$ |5 s* W t
;;与当前turtle的交易总金额
9 f4 o" d ?% v, Y8 blocal-reputation% f* Y/ b* @" V" \) Y6 N
global-reputation
" B: z; P6 w3 J* {- C+ N; S; fcredibility
1 Z4 l9 ?0 b( h3 l;;评价可信度,每次交易后都需要更新
3 W5 E" j" C- y3 Rcredibility-all
! i! l* P9 O) ]% i+ ]+ I;;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6 F$ \2 p' _0 W* ^% z+ q
& d: M* k" K( D) 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
- |$ U% @1 x2 z; Ccredibility-one! _, S) c% \3 I, Y5 k2 ?, e: J- `
;;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
& `' y/ G0 s& _& ]: Bglobal-proportion9 T0 x1 D0 {. J
customer
. a6 N0 u e+ m$ pcustomer-no
3 E* U3 x- j& jtrust-ok) q5 c, T" ]5 L+ @( B- o; F
trade-record-one-len;;trade-record-one的长度4 r7 l3 f: N0 G+ A, ?/ V2 t
]! }+ O/ y/ r& J8 U5 x" w3 T+ P! H
% _6 [/ `9 w7 l: ]
;;setup procedure
& k. M. ?2 ~1 ^* s& v( j4 y
( F _+ c* `! C5 I2 eto setup
( q1 I7 r! v. o2 e2 j9 P( f9 S7 Z% {0 e
ca
2 }) U% L/ ^6 n+ K9 g1 m0 r
5 T" e5 u6 i' [# H1 Kinitialize-settings
* p9 n$ a( E5 G# S' ~0 g w7 {/ q) d# {3 F
crt people [setup-turtles]
6 }* h) ~# P& i3 X7 I0 ]6 W. S B& J, s i8 `! f
reset-timer
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poll-class
+ f+ F% V# X& N: P# W j0 l
5 e) J, T5 t5 F% ~, p. X) b/ Hsetup-plots
; c# q; [; v* }) X+ P5 S/ t% q
% X& C/ }# o) R% s1 Z# _5 sdo-plots
- u2 Q B" ^4 Q$ \. q9 n# e: Pend
( h- L' i+ [+ L' K) z/ x8 G5 p6 h4 x p, Y0 W1 A* j; \
to initialize-settings# d5 D7 w3 w4 e3 y; B0 D
2 J! G- Z$ M5 l e' v6 T: A; mset global-reputation-list []- I: @) D: A/ ~; D) `" P
% T" K' B+ |1 O9 N6 k% l9 \set credibility-list n-values people [0.5]; h- M, ~9 {7 I/ t5 F q
! P3 c3 Z; `! yset honest-service 0
Y* U |+ y3 N6 B! s1 {
8 u0 k3 [5 \5 oset unhonest-service 0& v, w7 u# x1 X
3 I+ _$ R( E4 @4 k' a( m" }set oscillation 0
: h4 `, u0 I3 w6 a
. |2 q7 W9 l6 x$ w- h' \set rand-dynamic 0$ L- u( O. U7 v* L5 y
end+ V: E8 |2 j+ l5 ^+ L
/ T- [* @5 K. W0 ]9 F
to setup-turtles + J7 d- y8 L2 { V( p- |! q7 R! [
set shape "person"
$ b( ]% J: S& x Ysetxy random-xcor random-ycor
% Q! F2 p6 K6 Rset trade-record-one [], x) r; E( Z; a
3 N+ e% z1 N% Jset trade-record-all n-values people [(list (? + 1) 0 0)]
2 l8 m( x3 f. r0 G7 L; ?) f6 H
% H# m' x" n* z. vset trade-record-current []
( L% B) X3 |$ J4 f+ kset credibility-receive []& V- o# h" _ q% |
set local-reputation 0.58 b5 Q9 V5 j9 M( Q% ?- e* W
set neighbor-total 0
5 @0 j8 U) m4 k2 J8 w; O, tset trade-times-total 0" f3 R# P$ |% l
set trade-money-total 0
% g- q& u/ @- ]1 A' iset customer nobody( x1 z0 I: k) v2 z2 ?
set credibility-all n-values people [creat-credibility]6 w9 ]) S2 H, K! X* s) f: w j9 B5 \
set credibility n-values people [-1]
3 G, j! o/ _8 cget-color
& F9 O3 C6 }0 ^* X; M/ A: P' h
/ s+ H/ a9 G( W4 k$ gend
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to-report creat-credibility
! U! W: h# G% n, D5 breport n-values people [0.5]; S( |- l2 q: p/ G; v9 r
end
5 P% e( J7 y5 K* d3 Q6 Q' H& k5 X! |6 }" q/ Z' K
to setup-plots
4 q; p+ P; G1 X( I8 g( \& Q" Z3 d7 i1 f# |
set xmax 30
! A2 ~; ^0 K6 O3 F1 k" |- I) t# V/ L3 w2 n
set ymax 1.0
# ?9 X: }; G$ _$ g4 V# ?$ }# ?0 g" ], ?- _1 ?7 Y+ a% _ i9 ?
clear-all-plots) r6 r* `" ^% l
9 v# ~0 I# u6 K: J+ K- ^
setup-plot1
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. p k0 [- d% n1 p, Csetup-plot2
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setup-plot3
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+ c( l4 v8 ]! P$ b;;run time procedures
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; s3 o' h6 S/ Q' ~2 c6 h2 p( Mto go
T! N' ?' {% `+ r1 b0 K @ \1 E, }5 |7 M% D6 P( M
ask turtles [do-business]
4 E7 E5 o2 G8 E) o- R, [* l6 v; ^. w2 C, hend: [! x& V* V- ~1 E( L
3 X3 G+ J y3 q2 v' S
to do-business & Z2 C& C" a) O" t+ n4 Y: s
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' V: i( C) J& e1 u) T4 ]( C/ irt random 360
+ j' m% w& j( F8 I- W6 B( ?5 a' n8 u. W
fd 1
9 I7 m) R: R1 c, M4 ~9 m/ k- X
, l" @! ?) b6 \ifelse(other turtles-here != nobody)[
4 K: T# Z; P( N1 |3 ? U$ j. Z
- V0 L/ C/ Y( | [" a3 `3 V* R! }set customer one-of other turtles-here3 ]. f' h" F, j6 E `+ R9 Y
' c( M) k8 y+ B" o;; set [customer] of customer myself
* v8 A- k1 z/ O: W' o3 o
3 i& }5 ], X4 {6 Uset [trade-record-one] of self item (([who] of customer) - 1)
^: K% w" I+ q7 H4 A[trade-record-all]of self
J& E4 z; @) J$ k, W/ n! c. Y; y;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
( I6 w- G; t2 K3 u8 n- e( T9 f" J5 u9 l9 j# ?7 y! ^) w3 e; f
set [trade-record-one] of customer item (([who] of self) - 1)) K. L: d' h- s5 T( p: H
[trade-record-all]of customer
+ }( U2 z6 E0 G; T% y! {2 ?! e: l/ i! v! ~2 M/ P v, Q* }; p
set [trade-record-one-len] of self length [trade-record-one] of self* c" K2 {) N" |; t% `. O
0 r3 W$ g5 Z$ zset trade-record-current( list (timer) (random money-upper-limit)), Q+ z+ y3 g. B4 `1 n1 g. I
& c% L5 t: f5 |: I
ask self [do-trust]# p K8 ~, _6 C0 k7 l
;;先求i对j的信任度) Z I: m7 I) f! Y" \
3 p' m, P9 P6 l6 |# Q4 D' B$ hif ([trust-ok] of self)1 M4 z3 u! @* r* K2 T
;;根据i对j的信任度来决定是否与j进行交易[
! l2 [) Y# Z4 g' V# u4 c7 Rask customer [do-trust] if ([trust-ok] of customer);;这里可能会用到myself, s' O7 w: F" O0 V6 O4 M
2 W5 U2 g! R, g* S
[
( p+ ?. o1 M( i. [& c) s+ `' q. v& r% w) Y3 d+ S/ d+ w* x
do-trade
; u, U) S- q, n& ]: q0 w0 ?5 f
( o5 z! v% `9 K5 f7 T' b% supdate-credibility-ijl
& i' C/ n9 f& g$ v
6 b% X, R0 p; I7 I. [4 u' P% @update-credibility-list
7 W6 L! [ L# e1 M
7 }& h2 h+ R2 Q: d- t( l" Y
4 x5 u( K8 ?% P$ Uupdate-global-reputation-list% \' ^3 C3 v- X1 W' q
Z7 m3 n: p1 d$ l. X0 Q2 c0 U/ E6 spoll-class) A' C% u4 `, ?" |( n
* D1 K: T3 l% @, }# @$ g0 Nget-color& A V6 b7 q7 S; B; a
0 `- g& b3 x4 p4 ^]]+ Y: P0 h6 t0 D: I' \0 m
# ^5 o9 V( B$ D6 W2 A: }
;;如果所得的信任度满足条件,则进行交易
5 I5 G) a0 _( o, }: W" h0 C+ R% d! X5 C) Y
[9 f7 O8 }. Y& {) v& W M; c
3 |* ?$ ? d' Z, trt random 360% x& s( r6 @5 o5 m5 K
; O" f. S0 j6 yfd 11 |8 j* \7 d, \4 y6 I
) @) e/ P. w$ V v]
5 y- o" |) j! C' n+ V0 J# e- g a4 D9 _3 P! x2 \+ l* q8 z6 H
end! ?) E; j$ X z
( G& u8 R& ]/ t" ^* t- \. `to do-trust
* J( l4 H" M. [6 |/ m0 h2 Yset trust-ok False; h' N1 }8 Y V" P) v+ m& K4 w
5 }( g8 W( m1 t( N3 z
! I4 K& j* u/ `# b. M( C9 Klet max-trade-times 0: _* y, o% W% c
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]! c; a7 {, V0 J1 b! g
let max-trade-money 0
- e x2 A$ e8 v ~: x; ?foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
' |3 l7 J3 \" n5 `0 b& s8 |+ I8 Nlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))3 K, Z; @9 L" |+ A9 D
! c' W7 @9 `+ z. ^) R; \- `8 t# k7 W \
get-global-proportion
; N3 g$ r* J$ @let trust-value' t" }4 _ s3 G1 J% _
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); O7 {4 E( c9 p$ U5 {6 z( \
if(trust-value > trade-trust-value)1 `3 v5 G9 P" Y- y: f R1 p
[set trust-ok true]
& s0 u/ F% x% X! v$ lend0 q) K/ r# z# S! X* p8 X$ j$ ~+ P
! f8 u; V1 M& n( ?3 ?to get-global-proportion
' \& i0 T& d9 U) c/ M6 Eifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3): m9 C& E) ~3 k' I1 E
[set global-proportion 0]
$ Y0 q* t% a7 t3 R6 a[let i 0
1 j& Y5 T; h2 L* S2 clet sum-money 0
( v# O( l. N' E T9 u+ K- X8 iwhile[ i < people]% c: R( _5 k: ?9 |$ L# Y
[5 z2 d' u$ k# H' T: j3 \
if( length (item i
; M& n6 Y* C5 C( S j4 m/ Z7 u# [[trade-record-all] of customer) > 3 )
& {9 _1 o0 j% H[
+ }" C& B5 D6 D: r& [set sum-money (sum-money + item 2(item i [trade-record-all] of myself))/ t. O3 N5 _8 [: l* M# G" [7 A1 Q
]
/ U3 f: q1 f( d, f, O]
( d8 [, o; W$ e4 E3 plet j 0
& J' L+ K3 M( h' Olet note 0
6 M; F6 O' M; l2 swhile[ j < people]' d( x, w1 k M2 v: I4 s
[0 E1 Z1 l7 U6 E3 E9 K
if( length (item i# s2 v. p) w3 Q" w
[trade-record-all] of customer) > 3 )
) V$ G, m& f' q; |: B4 n/ i[
; ~ n% S" q+ gifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
! ]) [% Q+ T4 \7 a. ], |) h/ i[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
- \% m! t" X8 z0 D+ x! r9 }3 I[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]) ^+ S% X. P% w7 Z3 F
]
9 G, q$ k( B9 ^. Y! l4 d]& U5 i1 {0 {: R1 _
set global-proportion note2 b8 y. _5 J/ ]3 F& K
]
# T# @2 s ?) a' [* Fend: h( j' O* t% w2 W. v% C! C
5 Q1 R0 h& F8 y) R9 s: E
to do-trade+ U; D5 R2 Y2 p, d3 o( s! N! d+ u4 p
;;这个过程实际上是给双方作出评价的过程
2 Y" }2 J, X. Z. L% c; {* `set trade-record-current lput( random-float 1) trade-record-current ;;本turtle 得到的评价, D& J; n, [8 I+ s; z1 p
set trade-record-current lput( random-float 1) trade-record-current ;;本turtle 给出的评价
0 m3 G$ ] A; Q5 Wset trade-record-current lput(timer) trade-record-current
( R3 L" I/ q; K' z) I+ y, x. ^: b;;评价时间
]* {' i, w$ }ask myself [3 k6 Q% Y1 S& f8 [6 F
update-local-reputation
4 B* X4 ~/ x: {% t% Uset trade-record-current lput([local-reputation] of myself) trade-record-current
' O, X" _2 M3 }7 A" ]]
2 H8 |7 V! s2 Kset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
3 G" ?1 ~; X3 F) Z: a8 o;;将此次交易的记录加入到trade-record-one中
# U2 Q. D7 ^& a, |& C8 Jset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
5 K; m* t5 K4 t* S* O* _, A. {let note (item 2 trade-record-current )
* O/ r8 i3 x. v0 ^( P( Lset trade-record-current
+ h3 Q/ H) }: m& |1 V; J(replace-item 2 trade-record-current (item 3 trade-record-current))
# K, Q( j5 v& D' t8 x) ]set trade-record-current
- n# S/ I4 C5 M' x9 _- Q(replace-item 3 trade-record-current note)
2 O' P5 }% C8 ?% {; [* g, z, _9 g4 F3 p$ ]# `
, R5 L. S6 `5 d2 Q! i
ask customer [
6 t+ C( D; ^9 P4 Q. X5 nupdate-local-reputation
& u8 U0 Q& Z" t$ ?) cset trade-record-current
% E* d* C; x5 m3 b4 f8 T(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer)) 9 q4 [- ?' \5 L3 V* @8 t
]. n, L% `" Z+ w9 }
) K" v$ @( @$ K4 ]1 J* }+ F, F( k% j: N% U7 L7 {) d* ^1 W
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer6 p: m4 I, x5 @% ?
1 s/ f9 q4 P# L3 B: ~) i; @
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
3 h" D9 b& g/ S: R) e: q; }* c;;将此次交易的记录加入到customer的trade-record-all中
2 z3 E% n$ s& \0 `; T! ]: Hend
' K# H1 s0 j2 I7 c. l
2 ~ ^) n. u. P" O; N* c+ Dto update-local-reputation; g. z8 K! y% C" J
set [trade-record-one-len] of myself length [trade-record-one] of myself
# O1 O) h2 U1 z: f$ `" X6 ?2 _2 |0 \" j5 }+ Z
2 T- u2 O8 Z L
;;if [trade-record-one-len] of myself > 3
! j$ G3 t6 U; i. K- N% I" Rupdate-neighbor-total D& p: t7 w( I8 W D! ]
;;更新邻居节点的数目,在此进行
2 q2 a. u0 f6 jlet i 3' v' s# @% Q, k
let sum-time 0
/ ^" h3 Y% k+ v0 ?while[i < [trade-record-one-len] of myself], G3 N, {1 ^ D% j, d# T
[
2 ?# w2 K& [$ d) \, n$ Dset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
( T2 S5 y' n4 u$ X M( Vset i
0 j% z1 ?& P2 N- q" P. K( Y# O* ]( i + 1). I) v4 C; w5 k0 M+ s6 l* R
]
% p9 U( ]4 x8 E/ ulet j 3
- F! H$ o" b( \* klet sum-money 0
t2 n6 ^/ b7 ^/ X! _while[j < [trade-record-one-len] of myself]
# o+ \3 X/ D% l7 Z0 e& A+ h[& G- j- f: j L7 e0 f3 S
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)# y y' [6 {1 n% k2 Q
set j
Y9 d. u1 U+ [. {/ K& B( j + 1). ^0 N8 \5 g- g Q/ }# U8 `
]
, c m! _; W1 j) a, w: y0 P! elet k 3/ L8 T" \! q( V. X5 y9 I
let power 0$ r' l; O# l- ?" N: Q0 ?: |
let local 0" X) \$ G# Z9 {
while [k <[trade-record-one-len] of myself]$ u3 v6 O( n k5 k9 k
[* b6 s3 @/ e Z0 ^
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)
9 L1 i: G9 Y, B3 d' z3 W vset k (k + 1)6 l3 U% V! p( {1 p# G# l
]0 E# G' E3 g! Y* B$ g8 K
set [local-reputation] of myself (local)5 Y2 o, N2 _2 D' X
end
3 m G1 V* @9 z1 B5 a( N
- A+ `) O; {: Y- p2 Q! Mto update-neighbor-total! M$ R e+ a1 G
* x5 s* o. ]7 a
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
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/ J# q) _/ m, c9 o/ a, F k9 f$ v! B0 B* x2 [! {9 C
end
) y5 i8 }4 r5 o) D+ ?0 V* H
! L, x/ }: a! p3 wto update-credibility-ijl M' F, Q" K6 y0 C! A: k: U
" Y/ |& g& R1 ]; Q5 F
;;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) `+ ~; V% Glet l 0
* Y7 \: v3 ~- L" X2 `) ?while[ l < people ]
; b. k/ ~$ D% K6 y# Q( 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( y( K5 L! e6 S( ]( c
[
! _" _: W! y6 W6 n# N' U& }' olet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
4 @1 ]) Z# t! q: ^5 R+ A6 w# w' G. eif (trade-record-one-j-l-len > 3)7 R$ W i" t* U7 r/ Q. _
[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-one1 W; V& K9 A ?. ]
let i 3; z/ C7 b% [" m$ ^: _
let sum-time 0! d9 k6 `5 Q7 ~2 x5 I/ @4 U O! U1 T
while[i < trade-record-one-len]
, f+ _! x2 ~% _5 u+ ~& {0 v# ^[0 S: f" y5 V2 v, t2 W7 m+ z# s
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ) C7 R& M) g1 v! a; a/ l g3 X
set i2 X- ?4 L. X. P0 W' @) H
( i + 1)
( I/ q" B% l2 Q]
P% }: h# o6 }let credibility-i-j-l 0
5 P5 M% G9 O( J7 D;;i评价(j对jl的评价)
' e7 n- ~6 L% B& _1 N5 m) wlet j 39 y' b5 E5 |* B; u7 T: ]
let k 4
, R2 w1 e$ @, s9 Owhile[j < trade-record-one-len]2 [+ @0 o! |! F3 u
[0 o* o' F2 I' K5 k
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/ }+ ~ h0 P( ]1 I6 S' N
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)
( E5 _% V- \7 k" L7 p8 ]6 Y) Dset j. {3 b$ Z: S/ d! F
( j + 1)
7 H1 D) H+ y: g: A- R1 W' Y; y]
/ E/ [, N% ]$ p+ M0 dset [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 ))9 }* |! a3 Z3 H: p$ v
. y7 T3 v( i8 A6 P- _0 k3 z2 J; B( o! x
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
$ b# X: w; b: v. S7 R;;及时更新i对l的评价质量的评价3 S1 [ |1 b. _3 L
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
2 V4 M! h' @, Q+ k6 M- X K8 qset l (l + 1)( ?- F1 S% t; k6 q/ ~% a2 y
]- x" ~) F( b# z6 J3 R9 c$ b/ ^
end6 h$ D4 R% S9 c* v0 r6 B
& \! b2 i! d% P1 m6 p& C
to update-credibility-list4 |1 v& L% \6 O8 n! X0 I6 {* ]
let i 0* f8 m" C, E( r, Q M$ n
while[i < people]3 h/ |. p% K$ L& {& Q) f c
[
0 r, z2 ]8 E. i& olet j 05 k" B8 G x$ d5 c6 d
let note 0
9 [! m, j+ Q9 U$ L6 Klet k 0- |/ |6 _7 W8 f j, g7 }
;;计作出过评价的邻居节点的数目
' }! T% @# _3 Z1 I( N( Owhile[j < people]
' k* s7 v1 b | p7 w+ D( D" p[
: L; X4 Q7 X- c* D! {if (item j( [credibility] of turtle (i + 1)) != -1)- x- @7 t$ l5 W4 s3 [- a
;;判断是否给本turtle的评价质量做出过评价的节点' \& b; I1 ~+ s# [* j
[set note (note + item j ([credibility]of turtle (i + 1)))/ e! h5 v9 M s# y
;;*(exp (-(people - 2)))/(people - 2))]
' X Q x5 {5 ?8 W1 H$ aset k (k + 1)- M2 }% r( N2 J# d) z0 M: h
]
- z+ e$ L: N$ ~: w+ ?set j (j + 1)( \( z- ]5 l5 ^2 D: h2 X
]/ h( L! M& M* N; U. _/ }5 W
set note (note *(exp (- (1 / k)))/ k)
6 ~0 y3 I0 K, E6 G% T0 Y, h) xset credibility-list (replace-item i credibility-list note): G1 O9 G8 {7 X$ p3 v# _
set i (i + 1)
' N6 [! h; T, x, z, P]$ x) s! _! r9 X6 o! D+ B
end: I! c$ b0 @! n0 }$ i$ u; @
# s8 Q$ |! w) R; j+ w& C6 vto update-global-reputation-list( t& S: o" X& d4 E1 x
let j 0
( Y4 T$ Q3 G( r" [while[j < people]9 D# i" j R' u; T" k* y7 L
[# T6 V0 P7 P9 Q8 Z1 n# ~3 `
let new 0
. W/ ?' V; ~, r6 q0 C7 R;;暂存新的一个全局声誉5 o* R5 [3 n; c/ f
let i 0
: O8 g' R8 g3 y1 `- b Y- Glet sum-money 0& R+ Y4 J% @! m1 l
let credibility-money 09 l5 Z* {7 g8 q7 F
while [i < people]
: X) \5 X8 Z- V: T" _( q5 D4 u/ X, l[
5 ], K; t5 ?+ o4 p4 ]. pset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))6 p) I2 E( v! g5 f; B
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
3 l) a" S7 x0 Y" p; }+ jset i (i + 1)2 @: r9 ?+ z6 _5 t8 }( \$ ?% ]
]
: S9 j) \: K$ o4 z6 `let k 0& M8 N6 j, e1 c
let new1 0
5 a# D3 I" q5 p' Kwhile [k < people]
- o. c2 I2 A. `2 B) c. \7 l3 b[
! |# J, h$ P J9 r. q: Wset 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)
0 ~2 I; ~( Y, L6 K+ r# f0 J0 rset k (k + 1)
& M5 {( M o4 V: V- ^) t]6 V2 Y6 V( W( p J" x5 L7 o8 T
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
* J& W- k: R! `4 Z; [, K9 C; K- }set global-reputation-list (replace-item j global-reputation-list new)
3 g6 b0 b' w3 \* y/ q/ u( _& S1 J/ u; kset j (j + 1)
; }# W* c# y! f/ S! w]9 t( z; _0 W+ v! W+ y% Z
end
' P+ [1 K V1 X" I; a7 P' R0 A2 k) @) N/ I2 n
6 J! O G: q% F/ p
9 ~9 N; r- H2 `+ }8 u
to get-color
* v/ e. z) S( r9 @) U4 E2 }( h4 n$ ~7 U) `/ t1 V
set color blue( ]+ ]& C% k% W( N" u) G
end! l1 ?! ]/ T7 g6 [! A- v. V" T5 z. Z
$ ` \1 a0 @; |/ e* Nto poll-class( t; L. I- i; P
end2 s" {5 n, ~! O: [9 O& M `* C+ q
, q0 R% Q; n" H( M5 K
to setup-plot15 T# [3 D0 j% c8 X: |# Y9 \( O. E
' T: G8 C3 }4 P2 cset-current-plot "Trends-of-Local-reputation". K* [% Z8 C+ f
% y1 k8 {/ i( s5 N8 N6 Z! hset-plot-x-range 0 xmax" P. y4 A3 q' A. s- c- X
; j s; X" C6 `6 n& P
set-plot-y-range 0.0 ymax6 [9 k- ^; K z0 U9 U
end
0 k. {, }* Y4 q: R" e! l2 D
9 ~ p& Y1 | P9 Vto setup-plot2
5 H% B4 X- C A* H: O
+ l1 v: G+ _2 iset-current-plot "Trends-of-global-reputation"! r/ B4 e( ^9 f8 f9 O7 I6 I
/ ]2 ]8 U) ? F* i( O4 [ M/ @2 @set-plot-x-range 0 xmax
9 P, K: M, q4 r) L2 Y
1 w2 d3 x, u3 Q# ?3 Tset-plot-y-range 0.0 ymax
1 \1 R( t/ w: r+ |end# N3 I- c) y/ \* Z
- m! g) U% u1 X( O: U8 [7 a/ N% jto setup-plot3
$ M! |. q7 ?+ q8 _# g5 M/ Y
3 k/ C* b% B4 o- q1 e' ~: E! e8 dset-current-plot "Trends-of-credibility"( l- N1 I6 b! o7 b! T# J K
m. Z; F& _. p4 ]( m( @
set-plot-x-range 0 xmax! F4 G$ C. W% z1 U' a- {6 O
# | C% V9 r) I* [) l7 t s$ G
set-plot-y-range 0.0 ymax
1 l4 @) c# C0 r" p/ G% Hend) i3 E& R$ U# U4 A7 I
3 I: H& M) i- v# rto do-plots
# `4 k, T t4 v- A, h4 K% ]7 bset-current-plot "Trends-of-Local-reputation"! Z9 W" }* k t! }7 u# {
set-current-plot-pen "Honest service". c! e( B9 U& L7 u/ P
end
: h+ |+ z& g4 w; v Y
! H) q% n6 N; u[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ] |
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