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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
2 b- J$ F4 u b* p3 p7 Lglobals[
2 I- C& Z) ^2 f9 Oxmax" N2 E/ E7 t! ?; J9 v2 c: \, x
ymax1 Z j; M: y' I& ?4 ^: `. m
global-reputation-list
: s, `& b1 g9 L7 f$ m% M
. t O7 C! {! \9 w% ]- Z8 y: v;;每一个turtle的全局声誉都存在此LIST中
8 S9 A. U5 a, q( b: |: A i. ycredibility-list3 h) |* g# d7 ^
;;每一个turtle的评价可信度
! b+ |0 H" D9 s* F; vhonest-service. s' A' Z8 S) A2 _$ B
unhonest-service
" c5 F8 y7 V+ i7 Uoscillation
0 X9 h' | |& L6 G- yrand-dynamic( D |) A$ U- S2 m
]
! A+ S% N! J1 r8 [* l8 r- L9 j8 R% B" G, X1 D* T2 Q
turtles-own[$ P8 {1 t, A [! B/ n2 }& R5 w/ d
trade-record-all
# o; B4 |" Y/ Z5 ~3 |;;a list of lists,由trade-record-one组成
! i" p' ~$ C: p" [6 Ttrade-record-one- H- ]: I# c T$ G4 L7 s
;;list,trade-record-all 中的一个list,作为暂存用,记录两个turtles的交易记录% I' [% v/ s5 j7 ^ A- R9 {! y
6 m6 v, u5 c& H, l6 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]]
+ t" p' p0 v7 {7 K- w% ^& k. s6 l9 ttrade-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]" W# J7 P0 {6 t" D J0 A8 g# Y1 `
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
8 y, T, U3 a8 J4 Z9 x% Dneighbor-total
; L% x) |. }6 T1 r;;记录该turtle的邻居节点的数目
7 h! x' r& v, K3 D1 Y5 L9 Btrade-time9 ?' `* O/ O3 p- r P" S% Y* r
;;当前发生交易的turtle的交易时间
8 ~0 N" r+ C' wappraise-give' }4 g6 S+ _2 P
;;当前发生交易时给出的评价0 S2 s2 A) E2 j0 ] n
appraise-receive$ o/ b4 O9 g% N4 t
;;当前发生交易时收到的评价0 s7 F R" D* f; U
appraise-time
& A; }$ {1 n u: t+ i2 b/ F;;当前发生交易时的评价时间/ P6 b: Z0 h/ @9 m
local-reputation-now;;此次交易后相对于对方turtle的局部声誉* {3 W6 Z6 I" H6 p: L0 |
trade-times-total
7 Q/ A# q$ u. a;;与当前turtle的交易总次数% B3 e. ~1 @ A! d, c; ?
trade-money-total
- _ D0 F: [! `% a9 k$ h* _;;与当前turtle的交易总金额
) P& G' M& f" I, i4 E( zlocal-reputation
% L4 M% A$ _4 g2 x* E* Cglobal-reputation
- P. d7 J/ Y0 M' Ucredibility) X4 b3 Q3 X7 l- P8 r
;;评价可信度,每次交易后都需要更新
0 a6 O1 I! {9 X5 @) ^credibility-all7 w. s0 I5 M5 [& E
;;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" j/ ^+ v, s! g+ n; d
3 f) W0 w2 W" q" N
;;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. s' O- I' m5 r7 \) W: n* Y
credibility-one
& n# X8 K5 ~8 K0 r @+ @3 b2 W;;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8 O. l) l9 s% L5 i- ]: Y' m1 p
global-proportion# y( Q' m. q$ ?* E( {' V% Y, {
customer0 t2 ^* U7 J8 p4 e4 e
customer-no' p6 G& a3 f% |
trust-ok
9 L5 H2 d9 L1 A( h& etrade-record-one-len;;trade-record-one的长度7 n, J( j% N! T
]
* R, ^9 |2 P' R; u* m4 i8 ^4 Y1 g# d
;;setup procedure; m5 R4 e2 b9 `
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to setup
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ca
6 `" T% x% i0 E; n" c8 f* L+ ~- e, Q% N
initialize-settings( Q: z; H4 J: s6 L: Q9 l: {
8 ^1 E9 m8 M/ E# q* k9 \7 _crt people [setup-turtles], {4 S( J' [1 g7 g
; x5 k H$ ]) Y4 |7 x; B; B& g s4 vreset-timer
6 e7 I" L- q- d% _
. C: M7 m/ p ~' f B0 Q- ]/ Qpoll-class
# G* ^% d" |- s1 s
- ]; [. c7 s7 ?/ I& Y0 zsetup-plots
* P9 D5 f: [% {9 t$ \3 Z, K# }
5 @/ ^3 l, Q7 J7 y9 I1 ndo-plots: ?, W8 F2 q0 w e: f( G+ ]! R
end
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to initialize-settings6 N+ u2 W. z7 H: f9 c. |
1 y ]# b+ N9 {/ G2 [4 fset global-reputation-list []
1 l3 ^* s- G) U' x# z. b8 s# ` V3 ?, r& Y. ^$ G' O
set credibility-list n-values people [0.5]7 r7 ?# ?6 H0 g+ ]6 r- g
! X2 w; i( A' J8 d8 x
set honest-service 0" g5 _2 B6 q* M, c& g$ i( r
+ V+ w l h+ e6 ~8 ~. k. X' w0 H+ Lset unhonest-service 0
& |' x! b7 ?* O0 V
- s5 ~7 L6 p$ T0 r& Vset oscillation 04 }& d/ S- s: F
- B. Z$ c0 ^: _6 ^/ Z
set rand-dynamic 0
( Z% C, M% z( C+ K- \& @1 kend2 o: f5 w! @& T, h3 f
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to setup-turtles
1 M; @# z2 x8 e! v9 fset shape "person"5 E' |, Q9 G& ]9 P
setxy random-xcor random-ycor C" K8 C. v4 @" e
set trade-record-one []& i$ Y) c4 X8 | C9 t3 M! Q6 A
9 W3 t( O! v# J) y
set trade-record-all n-values people [(list (? + 1) 0 0)]
8 u2 O& g- E' q% X& G: m: P+ C. X4 @ o
set trade-record-current []" P, m9 b7 a6 ]; D" _+ p3 A5 [- E: h
set credibility-receive []
1 k- {9 H* @ v$ Gset local-reputation 0.5
; P9 P0 m' a5 g: Lset neighbor-total 0
( z* C. h, C, L% \0 |set trade-times-total 0+ s& _ p; R5 l1 a- L1 j# I9 u
set trade-money-total 0! M0 e- ^ L) L E' K
set customer nobody
1 p$ u+ R% ~0 h; Sset credibility-all n-values people [creat-credibility]
$ ], ^" q4 L6 ], Q6 ^; x1 Vset credibility n-values people [-1]
! o' n+ T$ ?" q3 J4 e w% P# `get-color0 @# Y; J. o" l a: W3 ^3 e
* | ~ g& Y4 \7 h7 h! ^
end
x; _) D5 i3 q0 D6 I, e" m/ v/ P+ N* a$ f1 {; W/ y
to-report creat-credibility
) {3 ?) a7 @2 k; P) F) ~report n-values people [0.5], n+ r; K, M# s+ s& X0 {0 [
end
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to setup-plots
: Q$ ^5 O/ s/ D3 v: b u( z9 N3 b& l/ [ c
set xmax 303 p0 y2 p, ?; J; G) K
& V. {: q4 i% K0 Tset ymax 1.0
" z9 }0 L2 y T- @/ O8 ], r$ ?7 @; d. i, f
clear-all-plots2 X# {8 S; R6 u
4 F5 X5 K1 n2 E2 K& X" Vsetup-plot1
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setup-plot2! E3 ^! F3 U# K d# {" t* d
0 I/ A/ Q* ^+ ]) v; d
setup-plot32 O$ R% ^. U; ~' |
end; {) S# |/ \$ i# O
$ }0 O$ W( J" G- \! k9 n6 n- e% D;;run time procedures
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$ B. h! X/ W9 p& V; ^8 }- g+ r+ x9 Lto go* I. x0 f4 _9 S) B
8 d' t" g* A- u/ G! n7 `
ask turtles [do-business]4 k1 e, n- y/ E6 ~9 i4 P
end' J% `- w7 o a+ G
5 y, v, \7 _0 D3 }9 X! L2 W" P
to do-business . M, f) S+ w) a% D
3 X$ ?- d6 J' H4 k' P; N$ u
1 s! l3 \7 a4 V) l( ]rt random 360
/ [$ b) z, x7 Q# W
" F+ I/ ~* E2 s7 D1 Y# Y5 o0 I( afd 16 B& h( p1 } ~! N7 m
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ifelse(other turtles-here != nobody)[
4 K3 X& i* }$ @! O1 M: }
2 B1 k6 `% A* P- L9 wset customer one-of other turtles-here. p) m! _! k. {& ], ]
2 T8 Z% c9 V, Y9 Z1 l;; set [customer] of customer myself& @" L2 w2 J9 ?4 z0 S) U$ U" i+ p
* q o- ]# a6 E& w3 uset [trade-record-one] of self item (([who] of customer) - 1)6 m% m% }8 D( t& g C
[trade-record-all]of self
# w$ j$ v* I1 ^7 ]# m( S;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self9 n, s1 E" S3 z3 L1 h: j9 c
8 y+ _/ ^$ Z& X. W2 [
set [trade-record-one] of customer item (([who] of self) - 1)0 @' c3 ]4 ?2 V7 ]; D. h
[trade-record-all]of customer3 X0 b0 }* t$ ~/ I4 H5 e X& d+ O
/ l6 a6 r3 J) g( G& O) T$ S
set [trade-record-one-len] of self length [trade-record-one] of self. P5 O7 h: M0 N7 T: W
9 B. B, _* l- n! L+ h7 W1 }
set trade-record-current( list (timer) (random money-upper-limit))
4 ]) z! ?3 E% G+ ]' T g% U
) I$ L( g& @$ O# ^# ]7 ]0 Iask self [do-trust]& Q0 G/ R8 z8 E8 S' M
;;先求i对j的信任度; a! i* M: ]! n, Y0 M* Y
$ ?6 \- a: H4 i
if ([trust-ok] of self)
4 K" q+ ]- K( k( H: H) E$ C;;根据i对j的信任度来决定是否与j进行交易[
* V! f" q" a3 Z8 m/ jask customer [do-trust] if ([trust-ok] of customer);;这里可能会用到myself
0 d u: t7 v0 z% Z) O: ~( [+ S
[
" F( s m" |; x; G$ _7 }" G# W s" Q. E
do-trade
# y; r3 N0 y2 F7 d. h6 B% Y( ]0 C: e+ O$ H/ K; B
update-credibility-ijl6 c ^. n! g8 @3 B5 q
7 n. N4 |( q0 A9 [2 r
update-credibility-list
0 w$ s5 X1 y" n9 K$ ?' V
1 _& j% ~. N4 A! D x1 `* p: _8 I! P1 }. M) |3 i5 k
update-global-reputation-list! [. @* k0 j* s5 z, i5 l) u
0 O: {, e* ~2 x% X8 ~% `& Apoll-class( \6 z" h8 { p" z9 y' }# r
" P" H/ }+ H0 S6 r2 z) Lget-color
- y. V) ^8 x U* l
0 O$ @8 c. _8 G! Z- X W9 x]]# P" h3 O2 N- l1 [7 ^ c' C% M
6 D/ x9 g5 U0 V6 l& h7 q
;;如果所得的信任度满足条件,则进行交易
( K6 O. u [- d' C4 v
$ ?1 E2 E8 g: [& h7 ][# `+ [' B3 W' r- \: A4 E. v
6 e; B# S8 T: S
rt random 360
3 ~! L: r6 G+ X6 \
1 k O: i& @2 \& {2 Ufd 1
* G. k% L0 K2 U& h! |+ K5 a2 K7 l0 H1 Y) Q
]
0 G) s6 g) U% i/ ~7 g2 f9 `, k8 ]3 O/ E. k
end! M( K% @+ O0 i
$ s2 \; J3 [7 B
to do-trust
% L( L5 L# M( \set trust-ok False
. [4 m; K; ], a, z% [# `$ f' X+ M; r4 b4 ^
9 A! \# @4 t C# q# a
let max-trade-times 0+ o5 B9 l/ a9 k+ y6 K; a% Q
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
- O+ V4 h* w2 Z, \7 ~ S+ y2 }, y$ N' ?let max-trade-money 09 n$ s: s! V' n3 t
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
) F6 |8 J/ `, b# _# ylet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
) c9 P. k9 N* h" z6 t. ^' [
" K. f" C2 ]$ @/ A: i: V7 j3 F1 d- ^# ?7 }
get-global-proportion; G3 w# E+ ~$ Q8 p. h/ @6 B& t
let trust-value
: f6 ]5 y, }( j0 G" F4 elocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
' n7 m% O; }5 ?, O1 Cif(trust-value > trade-trust-value)
6 `: l& [7 T2 q' I) X8 c% C[set trust-ok true]3 V) K$ Z6 W( t' ^5 O0 W1 O2 v
end: d3 ^3 @, @3 ]
' W; X6 X1 i: V* b) o4 R
to get-global-proportion* E" [: L8 u, O6 X) o7 C
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
* o8 H' }& |+ @[set global-proportion 0]
}, `* U2 o" }, A t9 W# M[let i 01 f4 Q/ t" k1 ?$ P- U
let sum-money 0% L& p1 k6 P U8 [& Y* _5 ~+ K
while[ i < people]$ z0 z! z1 G/ A
[. C6 u+ I0 a3 }" v# i3 k3 u5 B
if( length (item i
- s" d$ x8 f9 U6 r[trade-record-all] of customer) > 3 )& A; y2 d0 x6 x6 l) H
[8 U! C2 ^; u6 l! g Y1 L z
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))8 M, w6 T3 F$ Z
]
$ D5 C5 [% E9 A* \/ U6 e, A2 x]
& y: n7 `+ z/ Ylet j 00 c2 o! x9 f/ A6 n5 N! {0 f
let note 0; q9 ?+ C B3 Z( Y" h+ m! B
while[ j < people]
0 ]- v( o. D4 f8 _5 r[
" a! S0 B4 m3 Nif( length (item i
" V6 O1 M' U) ]: {0 E[trade-record-all] of customer) > 3 )) n2 [, a- U+ v1 f `+ k
[( k, H8 |9 m E5 p8 W; T( ?0 A' y
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
3 P2 U# d) k, B8 D[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]( ~9 A3 g1 y: Y5 T7 k% K
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
+ b1 F* B- W7 J% a]7 Y4 w8 e$ u+ t) \6 O6 c
]4 K6 } j! c6 r9 g% \4 U
set global-proportion note
4 }( p1 u9 |4 i; |7 D]
5 ]5 ?5 F" y6 f6 R& l5 xend8 M: Q k0 Y! K# J9 J
, f& O- W+ }$ u5 K* D2 b4 t& ]to do-trade
! X3 P! Y6 |1 T1 Q3 b;;这个过程实际上是给双方作出评价的过程* l$ X5 c( h, b& L6 n
set trade-record-current lput( random-float 1) trade-record-current ;;本turtle 得到的评价
! v! t) Y' }8 D% T1 L5 Vset trade-record-current lput( random-float 1) trade-record-current ;;本turtle 给出的评价" e' m. E: L6 R& _; r
set trade-record-current lput(timer) trade-record-current
% _+ P B- |) T7 E, u4 a( [;;评价时间- u3 k4 K% F7 i0 B! C' b; R$ k5 \
ask myself [
4 s/ G/ r0 v% k6 \update-local-reputation
! d* q n1 w Y% `' uset trade-record-current lput([local-reputation] of myself) trade-record-current
& b# ~* G" N$ q0 T+ s+ Z]
% R/ ^& w: B/ ^6 T. kset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself- Q8 K5 r' L" _+ m# U0 ~; g, ?3 Y
;;将此次交易的记录加入到trade-record-one中; z9 R4 x0 }8 h2 Q
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)' \, L1 @4 s+ W# S
let note (item 2 trade-record-current )( u& W% n% C( b: X+ u9 g) y5 j: R
set trade-record-current
! `% k0 W+ o5 [/ S" N' O6 L(replace-item 2 trade-record-current (item 3 trade-record-current))
3 Q B4 d5 P8 \+ ]set trade-record-current6 V! ^; d2 j; T* y7 N* p! @
(replace-item 3 trade-record-current note)( w4 F9 [( c( A: j
+ x& c3 Y9 P& ^1 P
# N" Z+ s- P* H n! o( ~- Z0 w7 Uask customer [
2 w. C5 K# @! V( w" @1 bupdate-local-reputation
# L' G6 j% {7 \) }7 r) u9 }set trade-record-current
6 @, g% r, Q0 j6 Q8 I( s5 m(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
7 |7 _4 l- H+ m+ c7 h) v]4 U+ }" x1 K& c w# z3 t. U
9 B" ~) d* u/ I0 e
i7 U, M9 S K2 u4 b/ L8 _set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
% Z0 z9 G- f, k
% X; T7 G7 J9 N% H( z) y- Lset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
3 C( b9 K1 x7 c* p" p8 I;;将此次交易的记录加入到customer的trade-record-all中! N! W$ c$ w& X; j) ~
end
9 a, E$ Q, X- B4 |( \# ?2 x2 t4 F6 }# w
to update-local-reputation
, H5 ~+ X+ V$ O! X* W/ K9 rset [trade-record-one-len] of myself length [trade-record-one] of myself. T* o# N1 b3 K+ j
) D1 D1 a+ Z F4 z) C+ e9 z6 O$ H* ?/ X0 I
;;if [trade-record-one-len] of myself > 3
2 b6 U( e* a0 S; eupdate-neighbor-total: d8 g! D: ~8 A, L% [' E7 L. }5 _+ r
;;更新邻居节点的数目,在此进行) ?: P# T( o0 f8 M; V
let i 3
& o( e' y8 {: H1 Ylet sum-time 0
0 y, {; [9 S' F4 s% P9 v, f/ c2 uwhile[i < [trade-record-one-len] of myself]
! H% o/ h6 E- B( G0 ~" P[
# `) J, Z2 I6 V0 o; J9 Z wset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )* W3 p" L7 U$ s: }) k
set i! V- H4 ^0 n8 m# L
( i + 1)' l% q: G N: n% u0 W
]0 N$ l+ \) O- t
let j 38 t: n: T- ]0 _, C1 o1 a
let sum-money 0
& V) H v9 o( X! n, a, ]2 \3 v5 qwhile[j < [trade-record-one-len] of myself]
9 s! O0 u3 {' y% H4 k$ \2 d[* V" a! m! N 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)) _4 u/ W) a, v/ B7 N
set j
5 Y7 h% e' e4 w6 i' p/ p6 @( j + 1)- {; [1 C Y+ _1 L
]
$ |: x- D3 {; ]* m% g- t% ~let k 3
. g9 o8 y" \2 p6 B' \0 glet power 0
& P8 w. {& v9 A' Nlet local 0! V1 q) B8 H" h! v9 z0 }6 N6 t' p0 P
while [k <[trade-record-one-len] of myself]' ~7 {7 z6 ^0 R/ u
[% U8 x: @. y) c
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) . S, l. m9 o6 A# O3 L
set k (k + 1). y% }8 a) x7 L1 H% W
]* A. p% \6 K# x. a% K
set [local-reputation] of myself (local)5 ~3 ^: V4 X4 h# A: B
end
, z$ y" ^, g) x) j; S. A0 j" |
; o0 }' B& j1 L0 K# Oto update-neighbor-total
4 V) `2 N* o4 l$ ?+ @5 S5 i2 ^- X! r& y, V! l2 s
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]7 p- S7 S. z: `2 f; u; P o8 c8 k
' \ b8 h: Q O1 ]2 W; Q. G& l7 ^; q
end
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to update-credibility-ijl # `" ]7 Q+ b9 n5 W: X0 A- R( d
: `5 H$ Q% R7 s: \; @: ]& N! 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。
0 A; I0 R8 u4 V2 i: ^- B ?let l 0+ M& X* ^. Z/ r5 e& f
while[ l < people ]' G" H3 l: ?/ p: v5 ^
;;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
# {9 a% A$ {3 W# d. a% n1 `[
, {+ Q6 ~" Z& M) `let trade-record-one-j-l-len length item l ([trade-record-all] of customer) K) [5 v* Q; s1 n! i% c
if (trade-record-one-j-l-len > 3)/ @- e# F% _5 N0 n) x- U5 v
[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
2 v4 E \8 I: b2 ?1 V. Olet i 39 N! T5 `' v7 Z7 s* k
let sum-time 0
0 L* {' l1 O4 D. e( ~while[i < trade-record-one-len]6 G4 d. ?/ ~$ H5 v4 P% c
[
4 I- F6 |- i) _* R' k+ pset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
* s. ?: e9 C3 |# m, j# p# _set i
8 }0 S/ s$ |0 _: A; b( i + 1)+ V' ?5 R, V& U" ?
]
6 Y1 V, T7 Q6 |" @. u( Jlet credibility-i-j-l 0
* h+ I0 } }8 e9 Y1 S K1 y7 \8 n;;i评价(j对jl的评价)) Y) R1 m. ]7 I: i
let j 30 d$ D* x: Z! j
let k 49 l6 {$ z2 A( A3 t* \3 S% U
while[j < trade-record-one-len]
1 N- F1 m2 l- c. O1 i[
. m7 {1 m' ^. W- Q! D; d8 b( Ywhile [((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, ?) u: K; P( Y$ @4 A* {6 A z
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)
/ ?/ X6 Z# j( pset j+ D+ g) R& k+ q7 K
( j + 1)5 Z4 a) x: S- E; W/ c
]
3 v7 J% }/ A2 c9 }1 Rset [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 ))
8 X/ |2 e9 ?8 A) Z c
& A! n# \* x* q! P
! z; q+ v8 e K8 M) Tlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
7 J, k7 c8 D+ b;;及时更新i对l的评价质量的评价
5 Q2 U) m# m- u1 j, ~set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]) p' ~* p; [0 j; J% @7 F
set l (l + 1)& v1 }3 r1 O' f( d
]
$ e% D, j, Y- C! X( Kend
) ~# H0 w/ o4 g g* u% T) r# @
! e9 {0 H+ W+ S( V0 f. ]to update-credibility-list! C) Z3 Q8 u6 ^5 k5 ]3 N
let i 0
6 k9 s; H, Z$ Swhile[i < people] t5 C- Z' \9 V7 V& v8 c' S( B
[
! e$ `' M! o/ jlet j 03 Q0 b* t- A5 ]- h
let note 0
0 v" I+ n- a" I; m2 i6 Q& Vlet k 0/ |! C4 N5 D. C* `1 B# a
;;计作出过评价的邻居节点的数目" D+ S) ~2 O' M1 I7 E) Q2 ~/ F" g" m
while[j < people]
! F9 i! @& e) R1 ~[5 Z1 S" f$ i; W% H* M# C' [ j: i
if (item j( [credibility] of turtle (i + 1)) != -1)
+ [+ t0 ^, _8 [6 t;;判断是否给本turtle的评价质量做出过评价的节点
# b+ z& A! W# C/ n# r[set note (note + item j ([credibility]of turtle (i + 1)))
1 A' B" |- x8 Y% m9 I0 m4 ];;*(exp (-(people - 2)))/(people - 2))]- N0 L5 O. T$ m) L' n+ c7 R" }% O
set k (k + 1)4 y0 J5 Y$ m4 F8 q B
]8 d: K8 d1 l5 [1 w- y/ Z
set j (j + 1)+ |% k( | a6 }3 W. x& Z
]
% h/ V/ N$ W1 H$ m: dset note (note *(exp (- (1 / k)))/ k)
( _, {5 L& y- b( _! j+ wset credibility-list (replace-item i credibility-list note) s4 [: r% s' ]5 g+ v" U
set i (i + 1), L9 [" ^5 J4 }& R% U
]
L' _) G9 H8 [3 gend
7 y! k1 H' {$ |, U( C* m, [& {' j2 @, S$ V1 Y2 k7 L
to update-global-reputation-list' R) f6 Z' }( ?
let j 0' ~# P4 p0 c0 t4 S3 y
while[j < people]
- @* n# S2 k# ^6 M! R7 l+ e[8 F! E- g/ l* m/ I" F' K" r
let new 09 S! y( J* H0 O" O. F! ~4 }- g
;;暂存新的一个全局声誉& \2 w) l. P* w
let i 0& Y {* H& a7 ` U# E% r
let sum-money 03 I- }( C9 c- L0 ]& b- j8 u' c: @" n
let credibility-money 0
& w$ \& A+ l! `while [i < people]
0 ^% E: K: ~ B _# h5 g[5 J2 L: L8 _3 d7 _: X) P
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))% T0 y6 P- E3 W* Z. O
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))4 B* E' z4 T. r( b' r( m
set i (i + 1)6 V4 E6 u% |- S3 Z& j k1 i! n
]0 d h# M% C# ^5 U5 ]4 X7 m. e
let k 0! n5 X6 _5 i3 O n( G, Z
let new1 0# O8 b0 f! w! q2 [6 p
while [k < people]
; G) `* w2 ^6 m( a, U* U% a[6 r, M2 G6 S5 T+ O
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)& i1 _! M/ t& w7 I9 X0 i9 s
set k (k + 1)
* a0 j* d/ B2 M6 ] M$ [9 G2 k]
! \+ Q. B* L" T" S4 ]( pset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) F3 v# C7 \3 O, S8 n1 F1 d8 i' a
set global-reputation-list (replace-item j global-reputation-list new)
5 b, h* Q6 I* v: `6 M: ]) i' f0 \set j (j + 1)8 _4 V/ y6 m* Q/ q
]
7 p6 u% d3 C- oend
! \& `/ T% Q3 u- Y4 f( u9 P+ ]# ` S ~+ R s D: m+ l
4 R' c" G; g$ T. Q+ w
4 u; }$ O. S* u ?5 h: D5 |to get-color
2 _# t: ?0 D" j T( B8 D$ I* t3 z+ j8 r
set color blue
: E: y0 ?8 y3 ?( y$ s1 p+ x5 Q6 \$ wend
& s1 R) c3 ? H9 G6 G: g
( _* c' v/ x" Y* Jto poll-class
) _% [4 U, m8 H+ ^end- a- d% ]0 I$ u, {. ?
0 D. z) X# H( @5 ^% M: O5 {to setup-plot1
& ~ v* V+ ^6 @6 r7 T
' W: B$ z4 O2 |4 Y& Tset-current-plot "Trends-of-Local-reputation"% q+ k r% Z1 c0 h4 t
8 \# H6 b: i& v: b
set-plot-x-range 0 xmax4 @, f1 ~5 k9 p) o0 u
8 _8 v1 J% s2 M( ? z
set-plot-y-range 0.0 ymax
- o* ~/ Z$ U; r9 |* m/ Send7 i: [# }2 r# v/ C: _/ ^9 }
$ E1 P& _0 p! T0 ^0 a8 H* R, V6 E4 tto setup-plot2# t+ a& x2 `! R+ Z
2 q- x: L" z5 d+ b& q" i9 @set-current-plot "Trends-of-global-reputation"
5 D/ a1 M; l4 C& ]* b5 s
* x, F7 O( n0 Lset-plot-x-range 0 xmax; Y1 t6 {# Z4 b! A0 Q4 U6 q
% a5 C/ M; ?; e* c. B- \7 wset-plot-y-range 0.0 ymax
+ P) V6 @1 R) [, Z& f! U( Zend
0 u' x# i) M* ~9 q5 |+ G$ w
2 R, ~5 R$ Y$ d5 Pto setup-plot3. U4 P$ O0 z# I
0 E1 H$ K% L4 k1 v) T/ e+ j! j
set-current-plot "Trends-of-credibility"4 p/ U2 D/ v: |8 W9 g' y
: [+ y0 |/ s; A3 c/ Mset-plot-x-range 0 xmax
2 w0 I+ J# i/ C1 X0 W
, F3 m+ H# r) b0 K! T' bset-plot-y-range 0.0 ymax4 Y$ o/ C- W [+ w! f3 m
end
6 d$ i" f) R7 H4 Y
. ]! u8 v# ~# ~0 g2 x' u1 H) lto do-plots7 f/ Y+ |$ e) H4 ^$ M. [
set-current-plot "Trends-of-Local-reputation"
/ @! ~% ~7 r$ n1 b5 G0 g5 B5 Dset-current-plot-pen "Honest service"8 P% \ T4 D, g- I7 y% d) X/ N# E# S0 q
end
! B2 S6 f2 [3 q( M0 [( h# ]6 H1 |! b7 J; j
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ] |
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