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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1 q5 @* n* I( r! y
globals[
! s: b) y& g/ l5 v. F, kxmax
$ d# R& Z' ^/ L. tymax
4 {% Y/ H1 i+ H$ u# qglobal-reputation-list
/ C- D5 I! S- a8 U/ W
# g( o( P) |. a! n7 u, [4 N;;每一个turtle的全局声誉都存在此LIST中2 ?3 x8 ?6 F# u1 {0 ]) @: f9 w
credibility-list; w# o! q! b, j! ?9 Y
;;每一个turtle的评价可信度5 i0 }' u) e5 Y' C; R2 r
honest-service& I/ b% A V. b4 T' A
unhonest-service. D+ }- l' V2 o3 j; H6 G1 P
oscillation
" e9 h/ b1 O5 l# j! \6 J1 jrand-dynamic: H' o9 |, y! _
]
. O0 J% `/ Z9 A: @) W1 V$ o: G# N! F
turtles-own[
% p/ }, n; K X8 l6 _! n/ B# s1 qtrade-record-all
9 j L$ K4 C0 z;;a list of lists,由trade-record-one组成
. l/ G8 I% g) y: `7 Q2 X5 ktrade-record-one
3 Q- d2 y t2 j- q8 H" Y0 ^;;list,trade-record-all 中的一个list,作为暂存用,记录两个turtles的交易记录
/ \3 ]) h1 L1 A y8 ^9 m+ J8 ]4 S* P7 z
;;[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]]$ d2 u1 O$ X/ V& T7 W/ d
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]- j5 q3 p% R) y# 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
, g0 l0 H/ D; K: b' i& x Hneighbor-total
+ ~( z9 \% W% k/ \+ _+ n;;记录该turtle的邻居节点的数目
3 _9 P4 }; f& ]; z9 gtrade-time
# \. V# r* Y: m* r8 Y) G g;;当前发生交易的turtle的交易时间9 ]* I. }# H- t& T; M D8 e4 l/ m8 z
appraise-give; }1 }) d7 P) q; n; s/ \) p$ t
;;当前发生交易时给出的评价
9 `- s+ o- k+ |1 W; P# f+ `' ^3 ?appraise-receive( [* C( l9 x7 J' L9 q
;;当前发生交易时收到的评价+ C9 n$ d) f v3 \, p! w& D
appraise-time
. L/ |! C1 A9 d/ v; r;;当前发生交易时的评价时间
0 v: K# Z2 v2 }2 e1 Rlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉0 X: q r3 T/ H' u
trade-times-total
! a4 j* p4 Y( v;;与当前turtle的交易总次数
5 M7 ~* }2 z& f7 @' y& ktrade-money-total
: m5 j) v1 r% @) x2 V2 `3 |. s;;与当前turtle的交易总金额
4 v# O/ G! I# l" I, J2 D7 Hlocal-reputation
9 I% t) q7 z p1 W' q3 Fglobal-reputation$ R7 v+ z& d4 s: l2 {% g
credibility* |* T: a# a$ P/ d
;;评价可信度,每次交易后都需要更新! j+ R4 l% e9 u$ _6 {
credibility-all
8 y' d4 M2 d6 v; Y' g$ }' r: ?;;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
. H+ z' ~8 S6 f8 ^& |% u
2 E% x. v1 [( Y( F- s$ [;;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
V" ]9 C& F3 S4 v1 zcredibility-one
5 b& M! K0 R% [3 Y;;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0 E. `0 Y6 O% M% J0 y: n% ]
global-proportion
3 G6 C, ?/ S7 K( bcustomer
: [; [1 r' u4 d1 f. S+ k5 T4 A! dcustomer-no+ ?* t: n: k* z0 {2 B8 E; D) I
trust-ok
" J4 i' U$ u( M9 {. ztrade-record-one-len;;trade-record-one的长度8 ~( M) x3 [1 X& M( z, V* D: S" \: X
]% `1 j* F- b4 Q% d/ h
2 P) L* I A0 h;;setup procedure
2 P. H3 v+ _3 T6 \) V; `+ V& A& ]( O2 ~
to setup L3 b: ^. n3 s: O" r4 v) a% Y& i
6 }7 J1 b4 H0 `, B( | Z/ H- `
ca: D, B7 t- S/ D
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initialize-settings5 r B" \" p2 r; k/ B: L0 h+ p0 W
9 ?6 } S, w6 L! A! e6 Y
crt people [setup-turtles]
, v7 S# Z6 j/ ^% a O7 m& k9 Y
9 ^+ t3 H- k1 i* treset-timer
8 ?1 T2 G* g# I
0 b( i$ r6 {$ k. _$ Y( l& Gpoll-class
4 L6 u* V4 V x1 N4 V& k; m' I1 u% Q I( O5 U. \
setup-plots" ~' {% x# Q1 N |
' e# v* L( S7 _- _8 ~, r: J9 Q2 j0 Z
do-plots
) a4 A' r1 X" o+ Nend
) f4 I2 V2 a# U1 S; C
; v) J/ W3 w- [1 m$ M5 ` ^( Dto initialize-settings
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7 o& f, V9 v. z# T9 s* @+ l$ Uset global-reputation-list []
" ]+ v" P: l" }( w: K9 ?" L# T* B6 n
set credibility-list n-values people [0.5]: d; u z. \2 F
$ y- O x0 z+ o0 U
set honest-service 07 a. A* e( u! `+ p! A; T
- ^7 g! m3 s) N5 o$ }* b% qset unhonest-service 0
/ W K) g5 G5 g! C' e3 O' Y2 X0 c; C
set oscillation 0! B3 `/ N( Q9 u0 ^. n* g
/ m2 `, s2 r7 Z7 [" V4 |
set rand-dynamic 08 z4 Q. ^5 B7 \$ f( m$ B o
end
1 H: r4 ]. A# x% [9 k4 D! d) F. {- ~# G
to setup-turtles ; Y. n; y& P" u5 o. a) [5 d
set shape "person"
8 ^3 E' J" I3 r; hsetxy random-xcor random-ycor
( ^" X% N: p! m: `set trade-record-one []2 m u+ I2 c) `5 J( D2 \/ c
9 n1 E( p9 @2 M
set trade-record-all n-values people [(list (? + 1) 0 0)] 7 N+ _+ m3 v" d) C0 R
$ f( l0 h) }# W4 t) c& [3 g
set trade-record-current []1 _4 K5 ^9 M( Q1 M" N8 d9 x. o) U7 O
set credibility-receive []- Y6 g/ ~- g0 l1 V. i& ?$ }; J
set local-reputation 0.5
+ E; \8 A/ G* y) D; J0 \set neighbor-total 0
) ]6 E$ I/ m0 l$ W0 Tset trade-times-total 0, \, }6 Q4 y6 J/ n/ o& b
set trade-money-total 0
0 @0 f: X) Y+ r# Kset customer nobody" T: s8 u3 E' P& g& a
set credibility-all n-values people [creat-credibility]
' b, l( b+ _- B9 p$ X# Uset credibility n-values people [-1]1 a9 \* h, C4 U, X/ ~' j7 m
get-color; E( n/ w, m: Q2 E
, e6 r4 C/ {$ c& Z6 d9 @end5 C# I0 K9 n: n a0 P% b0 ?
n% E- T* \# a, tto-report creat-credibility8 B$ r: {! D. S% i V# A
report n-values people [0.5]
" p7 ?6 K: e8 C- k- ?end: i! b! q, W5 M7 n8 P7 g
% s- b" B# Y( `! d6 G
to setup-plots
% g/ j3 {! O( i9 V v( m& b. a0 b
set xmax 30
0 q- J, e3 z; v: k' B! i0 e- M, e+ M
set ymax 1.0
! m2 p6 o! g& O2 k6 B0 e
! m/ u7 P3 t" [! `3 D2 v5 nclear-all-plots& K1 Q8 I5 [# ~& f
/ `4 B5 D5 X7 j, A
setup-plot1* z3 [' |0 H. i$ A+ ?
9 f; K7 V1 y7 z- n( c' R' \: m
setup-plot24 \6 X3 Y6 e0 y6 W# Z1 c3 X. |8 z
& [& X7 f" k. U- ]
setup-plot3
9 _# N2 x7 D, y) y! L; Jend: f9 `2 @6 I4 C. _0 P9 e
4 @& Z' e% {2 n: p0 @
;;run time procedures
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V1 S2 }! d& n( U& X5 `to go
+ {& d' e5 H) G7 S% W+ G3 U7 y, j2 ^6 c" R, m `7 H# u& v
ask turtles [do-business]5 P& c% f- n6 q' Z
end
h1 A+ o2 K' D- g* [
# q/ C4 `, U" h) d# wto do-business ) `1 ~/ J' Y8 a, o
3 U" F! b2 M( x8 |" E
/ M( b3 z, x4 z! I' ~' h# _rt random 360& m; ~$ [0 L, ^/ h- @
5 }! C8 x+ |+ e, N q$ a' A8 cfd 1
6 r) `8 D y) Q: H. R
: [2 K r2 A& t8 ~% n' mifelse(other turtles-here != nobody)[; Y( s% I" W' l3 \! l
" N# P8 c0 w% zset customer one-of other turtles-here! \) S+ m+ G- O
1 y: r/ a! m; \/ l' H- S. N;; set [customer] of customer myself
- z$ z3 t* e- a$ o& M) \
; |7 a# R. Y w4 Fset [trade-record-one] of self item (([who] of customer) - 1)6 j+ T% ^. E8 ? J& y. [# A
[trade-record-all]of self$ o7 k4 L |. M4 w. Q4 @+ ?" p+ r
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
6 M( V' k o; z- {) `$ g$ W" t. }8 ]. d1 O5 P. W/ _
set [trade-record-one] of customer item (([who] of self) - 1)9 C. k$ X7 d& J Z* p
[trade-record-all]of customer: M* e+ o, t4 S' q0 v* R1 W
- l4 R- l4 k. t- F) C$ i: C# `set [trade-record-one-len] of self length [trade-record-one] of self
4 X# S& Z: E- q+ v" |1 i( ` [' n. X8 h
set trade-record-current( list (timer) (random money-upper-limit))7 G$ t( G$ W7 b5 Q4 R N9 W# l
1 w) |0 T8 M) K) r3 lask self [do-trust]3 l( l R8 J; p v+ i9 V5 y
;;先求i对j的信任度6 {8 ]7 ?* a7 c2 ^; {7 t0 f, A% Z
0 N. ~! k2 P, o% x+ P$ Wif ([trust-ok] of self)( b- J8 L8 W' Y8 M) G
;;根据i对j的信任度来决定是否与j进行交易[
/ S. K% B8 f5 w6 j( rask customer [do-trust] if ([trust-ok] of customer);;这里可能会用到myself% w; C; R3 P* ~! Z5 g
, v2 R8 W8 X/ ^4 ~4 F3 X9 _
[1 M0 \9 K4 x! m% D! T& g
& s! z9 b% o* d
do-trade, m( C G2 ~% ?' {1 ~
7 f% G) _% t* W2 K. _" `update-credibility-ijl% y' q$ e" t$ @( _, @5 b
4 @) e1 p+ T$ tupdate-credibility-list
0 Q; T E3 a7 \# e8 U% s1 \, E4 H. T
% N$ ^6 R5 a N" u& H
update-global-reputation-list
7 W& s9 Z' v+ n# F% b, d6 }9 Q" P
9 |+ M& p$ w; X- b: ?poll-class5 D, a, M- n+ Y4 u
7 p2 e' \9 I- ~% }% T( X, Q lget-color" M& \2 Y7 q, b( f$ ]4 n
& [ o( g! R, S( }
]], Q# b1 g5 q) b* V5 s
% y% o* d" ?* q* g;;如果所得的信任度满足条件,则进行交易
, a1 ]0 v$ z7 `% n% N
! @; C% C% R1 Y9 U, E3 K4 N F# f[& d* N9 J* J. T; `. {6 g& M
$ n6 a2 Q$ K) ^+ r
rt random 360
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fd 1- a% L0 W& Y, }8 D8 G4 o. R
* }1 C( S& ]) |. O; I
]8 Y; S7 o4 ~ L# \3 s
" f/ G L) s1 ^/ h4 } Y6 wend x5 z3 _8 N/ N- d4 T6 u
, ?: z* l/ }; ~9 g" {8 v
to do-trust % G, a' p6 R" `0 e% I2 P
set trust-ok False
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, A/ K; `7 i) c
5 R( _4 \) W; t7 f9 H& L9 jlet max-trade-times 0- h+ G& t/ d% _% ]" k( X
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]% V7 i' m6 C/ v% N; G
let max-trade-money 0
+ e V% f3 ~4 ^6 N" Gforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
0 H {' {; s( J. olet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
1 l/ o3 v0 W7 I& D. d. V9 c; j+ y( w' `
; K; J4 S& r( C; L5 H/ A9 ?
get-global-proportion( R- @2 L# k% y# _$ [* _* ]4 \- C
let trust-value8 N9 O& f* K0 x% O
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" p7 t& y* L
if(trust-value > trade-trust-value)5 e w" B C, t# V
[set trust-ok true]; ]: ^0 L. i9 I3 Q/ T
end; F/ [1 b) j3 B
2 }" w$ K- Q4 U/ `7 L: M) P
to get-global-proportion/ G2 T1 P( U E7 l
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
; q* \, @* q5 u* F& z[set global-proportion 0]
8 g s% V, x* O" ~[let i 00 ]3 H8 w1 d# [( j5 L% ?; B% q' y/ O
let sum-money 0* M# D9 B8 O7 G, t
while[ i < people]
. M% H( x( ?+ c[ H: t' S, i! _+ R' u5 H# H/ h/ K9 [* f
if( length (item i
( u6 r# `! `6 U- G- d[trade-record-all] of customer) > 3 )
- x3 P) P a8 O7 @% U0 Z: _[: M& w3 A8 o3 e" h
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))) Z5 z- N: x* a! h
]
- b5 @& M! A( {$ g# Y; M0 ]]6 [2 }. G0 i4 O
let j 0& T1 n( ~- U$ [4 I* ]
let note 00 R8 X% I: K/ D
while[ j < people]$ i& Y$ g: _/ {6 j) }5 u
[" Q% T$ }# ?" o/ O, d) c! Y
if( length (item i
9 _7 y+ k4 W$ T% ~- {[trade-record-all] of customer) > 3 )3 O: n5 h# d$ Y# b) a) f
[1 a6 R! p! U5 h, B6 Q
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)( o/ M" B; X$ Y W5 k7 A% E
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
9 D5 @ y2 Q; y; ?9 r[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]! E% [) K2 k4 [0 n2 X! T! c
]' ^0 \* N& q6 o- ?
]8 j7 ^, p0 V4 n2 T s
set global-proportion note5 N0 E3 v' c; E0 Y/ ?
]
& Y1 g5 \" f( V: z+ O7 ]end
+ I/ t' T5 T' ~! [9 G% H+ s3 B: |# w# a
to do-trade
( X3 s* m Z" i3 W3 n* U;;这个过程实际上是给双方作出评价的过程 Z! F! Q' `, d# V4 M* L( C& J
set trade-record-current lput( random-float 1) trade-record-current ;;本turtle 得到的评价7 g; O0 K: J( A5 R' L
set trade-record-current lput( random-float 1) trade-record-current ;;本turtle 给出的评价* G' P3 M0 a5 O8 W& ~; \) C" y
set trade-record-current lput(timer) trade-record-current
2 x6 s$ K/ A- X+ h;;评价时间
V% G3 ?3 n+ Y! }% f* i9 Cask myself [
& C- m4 R& H7 c2 I: a' }$ lupdate-local-reputation; X, b+ e+ [+ k9 ]4 x8 y4 c
set trade-record-current lput([local-reputation] of myself) trade-record-current
7 {7 y2 J+ @9 Z# \1 ]" c]& s$ t: E5 s" j$ [' ^( _4 \! J
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself( Z# x; T2 y8 ?& q$ |0 A& d
;;将此次交易的记录加入到trade-record-one中* _$ u4 e$ F4 @! _
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself); J2 U( ?. ^/ N, Z1 r/ G
let note (item 2 trade-record-current )% F; L: K5 \$ f9 d: B" @
set trade-record-current! Q& L- y' U( p0 G5 ~7 x- n! `8 `
(replace-item 2 trade-record-current (item 3 trade-record-current))
. ?5 x5 m+ e4 @) S0 M; Jset trade-record-current
# Y! r7 H/ j9 t. _6 e7 s5 @6 v(replace-item 3 trade-record-current note)1 T0 N. E3 W7 ~
, g) @ C; X/ s! H" C1 M1 d& Q; \0 p: h' g% A- O5 b" @1 ^
ask customer [
; V7 i% J! E5 X: \. Oupdate-local-reputation
& L2 p. t( h% p- h1 ~set trade-record-current
. W$ Q# V. g+ Q. a. }- B) {+ H& y(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer)) , ~0 S% L6 h9 |$ ^ e( u: R ?9 J
]
# M; A, _" f/ z/ W1 @
$ a4 f6 x" [+ C& M0 X
( @& i0 l, G: K1 D* A+ I6 Mset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
* F* O7 ?* S3 n' t) s& Z- d2 f- D! r5 U9 f4 h, W
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
8 n. g: K3 K7 e. U;;将此次交易的记录加入到customer的trade-record-all中1 n. W) Y" a9 G* ~2 k0 V
end
) u- x* ?% ?. ]7 F1 W4 l
$ V8 @7 Q( ~9 s( oto update-local-reputation
; T, Z: v% V6 I& o9 rset [trade-record-one-len] of myself length [trade-record-one] of myself
$ u; n! o$ M/ z$ _2 e/ Q& a
& @0 s) P4 J: J1 M) g( F& z8 Y6 J' b' o/ x2 T+ h
;;if [trade-record-one-len] of myself > 3 ' _$ {& p5 l( C
update-neighbor-total. G" ^' K. }( {" b
;;更新邻居节点的数目,在此进行 N& _( V/ O& O$ i
let i 3! W- @3 f% o2 T, \, V
let sum-time 0
( P6 V& ^. _+ C7 M0 Zwhile[i < [trade-record-one-len] of myself]; f) H ?6 ?: G' W& d6 w
[& g/ {+ R- e$ l( c7 c
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ): z9 g" v: s1 d$ y
set i
% d. r9 T$ O6 w0 O$ d9 c( i + 1)
; i+ ]* ]1 y9 i2 f0 z7 L]
( J( H3 \3 Q. Q: B' I1 z. Rlet j 3/ J M; S# [" j7 ]' x
let sum-money 0
4 w# j2 s8 s- l+ m8 Awhile[j < [trade-record-one-len] of myself]2 t" f$ I* A* h! I4 f' M: O" G
[
; c" \3 | v% f9 F* }# w: sset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
3 Y# [: I: n3 Q- J% i4 D7 sset j
6 P6 O) X- G( G0 [" A( j + 1)1 Q1 u: Y# h5 ?7 d7 f# K7 p |; K
]: R% c* e1 r( d2 k" C
let k 3: P6 E9 R6 P1 z$ g% W( V
let power 0
6 I& i e- I" {/ @ S+ }8 S! m# clet local 05 |& ?0 C& O7 Q: s0 e
while [k <[trade-record-one-len] of myself]# G Q5 ~. O& f6 s2 d) A- m
[
# G' I+ m4 U: Y& c0 Jset 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)
/ z9 X0 s8 L& V7 aset k (k + 1)
4 i1 \4 n q$ M# {]
$ D2 _' k; t: u3 fset [local-reputation] of myself (local)
" I- C( h$ `! |0 Aend& g+ c& L- U1 f$ C& w
5 A7 o/ X' J k$ V# Y6 i, X; u* [ `- V
to update-neighbor-total
7 v" n. u+ y" @0 o3 @
4 @6 C6 G. i1 x0 `: U7 pif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
* {/ K# b1 T0 T( C* ^/ T- i3 x* ]0 ?: x! b
: ~& M$ w/ j' l
end B# U" J7 Y s9 ?# x3 C
9 n) J( U ^+ m; }9 yto update-credibility-ijl 7 I/ ~& T$ N$ }
5 @5 V! n( y) |8 a) G, ~* r3 @* W0 Q;;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( F) D' I/ ylet l 0
* }$ V# ]7 O" j. cwhile[ l < people ]) V1 j) P3 B( C1 J3 d
;;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 @8 e$ X+ i" x& ]: C [8 t[* o1 \5 h* ^' J0 w7 m# Y* c
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)% i! q t6 j7 K$ ^% s1 ~
if (trade-record-one-j-l-len > 3)
% e$ a0 s3 l: _) l( d& n! x5 p) D[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
/ a- Z. I, }7 H9 i6 |: Hlet i 3
% W) \0 C* U: e: B' ~+ vlet sum-time 0
3 ~' Q P& K6 _2 ? i5 uwhile[i < trade-record-one-len]5 a9 E' G" I" l t$ I
[
6 h1 ^# r, h5 i9 f+ H) yset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
; O3 E& V. A C( Sset i
" E3 q" S/ b5 I: W0 ]( i + 1)
" l* ~5 m7 e J% @/ c+ B]
6 t U& W# Y; L0 a2 plet credibility-i-j-l 09 O: R% L) t I# ]
;;i评价(j对jl的评价)' I& j( T4 o- J. ?( ]4 k$ L
let j 3
9 `$ ]+ k% ^) x! {1 Wlet k 4+ p4 M# v6 V9 t5 D h8 q
while[j < trade-record-one-len]( r0 q) K$ s% _4 k' `% r0 X3 H% U" g
[; b, j; ?7 J6 \9 D2 [$ W
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! b2 _/ Y' N& C, O. Z& l$ C
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)
/ o% b; g8 F, e. j) e/ d$ Cset j' A; b1 j* `* k# m
( j + 1)
& t* S [: p$ F6 ~" N]8 s' s7 x0 K6 J, [* p4 Y! h
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 B! {2 o+ I9 i. J+ U/ T- l3 k5 `3 [+ L- |
- J ]) @; F2 n
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))1 D9 \* p; O" n+ @/ `0 Q
;;及时更新i对l的评价质量的评价
" Q& T, v8 s) t0 d. H" {set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
/ @: C- O9 S1 Gset l (l + 1)
! U) _( N9 t! u4 l' G* u9 ?]
9 m: h* n" l: p& N0 mend* W1 j$ M7 B& b! Q6 |
M; n, o0 p& O- J& l+ ^to update-credibility-list( ?7 G. |0 y- [# Q* [" U
let i 0
^2 ^! k2 b7 Q" U' ], vwhile[i < people]) v4 l, W/ A* I
[
1 L* q* F2 g* k- v e" W1 n" ^* clet j 0
+ t3 R* V# C5 A* \% ]* \let note 0' H0 x3 A( o5 B" V/ s
let k 0- }4 w) q' ]1 N/ d
;;计作出过评价的邻居节点的数目
% f& `& s) x7 `( ?* Qwhile[j < people]
0 N; |5 Y! r/ k( C7 `2 p( D[
( {7 J) E0 r$ P" c' t7 X7 fif (item j( [credibility] of turtle (i + 1)) != -1)) {4 \4 I9 M7 @# B1 }) @
;;判断是否给本turtle的评价质量做出过评价的节点
& C6 M2 N$ }! K) t" a* g[set note (note + item j ([credibility]of turtle (i + 1)))
- b' b+ e. f4 H9 H8 ~- ]' U7 l, };;*(exp (-(people - 2)))/(people - 2))]* Q- ]" P" v- C! I5 q; O. N, O+ e
set k (k + 1)2 Q$ e0 z; c) P( ~1 n& V& o
]
% Z$ [# r' a2 L# Zset j (j + 1)8 |5 n* x8 A1 d% T
]8 N3 L# L$ \, ]* B) |+ x0 j
set note (note *(exp (- (1 / k)))/ k)
8 X% v S, P2 m6 T6 J# {set credibility-list (replace-item i credibility-list note), U; _3 ]5 m, p9 K
set i (i + 1), C8 d) g1 s( b% g# Q3 L2 F# B
]! @) D* j6 E, k3 K; z! i
end
- d1 M% u6 o/ o4 x- t" W0 `: E; s0 _, R4 k- Z4 e
to update-global-reputation-list6 ]; t i3 {/ T* a
let j 0) J" l; M' r5 Q! |5 [$ E- h
while[j < people]& l/ w$ V7 W) a
[! R+ K) X, d$ j) N( S
let new 06 }# G0 E( [) H1 \; A7 x
;;暂存新的一个全局声誉# c7 ~; \, t! x0 }' {
let i 0# {/ A/ f3 n" S
let sum-money 0
$ m& v9 K$ W w6 A: i |let credibility-money 00 S [. a! F) P9 C' Q7 b6 r; J
while [i < people]
& V4 K ?. h! l/ \* t1 [0 Q[- Z* n7 v7 @: N, B: g: \$ t! }& _
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))8 n; j8 l1 Z# M$ _: o: n' Z
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))# B8 s+ F5 }9 _/ S0 u% X
set i (i + 1)7 n/ R1 y3 E3 X) z
]
7 j: E: w) U; Q5 E8 L0 Wlet k 0
7 p9 {5 a; H6 @+ n( e0 h. Qlet new1 04 X. W2 _; T4 J/ p7 e' Y
while [k < people]; d# g7 c- I2 l% }! S' D: B
[
* m; ?0 U7 z. M, b$ p3 c& 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)
% L: D* a H7 s# @+ \+ `set k (k + 1)
! F# z' [ A4 `]9 @$ M- r) c$ N2 A7 p6 o# m
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
0 E: X7 t- g0 X7 Q5 Bset global-reputation-list (replace-item j global-reputation-list new)
5 q7 V( `) C" S4 f7 S7 \set j (j + 1)! n- i8 H0 E0 K
]
. g) n$ A) T% P" ^3 ^end- ?% b% a5 m* L& Q- I
6 L' q* R# g* h
! M1 b9 Q" C3 x. g& }7 W
, J( b) _9 g% l1 k2 oto get-color
7 Z5 M3 K* W; S" V& ~' W7 p, h/ G$ E* R. D/ g6 d
set color blue
/ R( y" ]3 G6 j) I {, f6 x' U% Qend
/ X$ Z- \* z; F& l, d; w" G
% c6 \# f4 T- H5 e6 a% p( gto poll-class: ?$ N T( s8 W! J5 M0 S6 T9 H8 u
end J, \: c& n" ~3 x
7 \4 E* E/ I) c. O1 dto setup-plot1
8 R1 @, ^' f6 V G$ [2 D7 P, D8 j" P6 f0 } F4 \
set-current-plot "Trends-of-Local-reputation"
3 f2 ^; l. ~+ Z, @% }. I$ ]$ J9 o
# u; s- Z# m% p% [- q- S1 tset-plot-x-range 0 xmax0 {3 z" @2 C4 d
4 @: U3 u% }+ Q5 b3 P" K) \3 ]set-plot-y-range 0.0 ymax8 l7 [; B9 F/ w- C+ n% N
end
3 ~- i8 i! `' @' \' O
: J3 E2 @8 }7 d% b f/ tto setup-plot25 B& L A" d9 G; s
3 @% R) e' O; x/ h) m; V( B6 @set-current-plot "Trends-of-global-reputation"* M+ n$ b5 k! X
! R8 s0 _- M; @6 X7 ] q8 [$ S
set-plot-x-range 0 xmax1 a2 z3 m4 b( A1 V; J2 E9 S6 b. H
5 z5 t1 x9 a- G$ {7 vset-plot-y-range 0.0 ymax
8 h0 J& P+ B# q/ K0 [ J2 lend3 k) V2 b" I# H4 e; N8 M
5 C$ ?9 @: ? w4 _# a0 O3 Jto setup-plot30 A4 K9 w* K* k$ _
1 x: N9 C8 [. K0 p5 Zset-current-plot "Trends-of-credibility"; ^% x$ U V; M
6 i8 w l6 Q0 ^" W5 q
set-plot-x-range 0 xmax7 k' z F/ G) o* @& }
! E( z1 K+ M% M& c3 ^7 qset-plot-y-range 0.0 ymax( e" \4 [8 a5 a# p1 b t+ X
end
6 B# [4 u) u3 b: X5 a( j5 F
) `6 e9 ]* ^4 a' z( U/ n# sto do-plots
. @! `4 v, }& l* B) H% Dset-current-plot "Trends-of-Local-reputation": U3 e9 [3 Z' c8 G& ]1 ]
set-current-plot-pen "Honest service"
/ w. M6 O5 \ k, F6 \: z$ Uend$ |' h/ b# Z& l7 P& v
+ f8 p' {& ?3 t# g p1 w
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ] |
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