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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
; X# a' @# n7 u7 ^globals[
. d t- C% ?7 ~* ^# hxmax# t- W* a6 g. n! B
ymax
0 a7 h( c0 ^, K/ R& q; Nglobal-reputation-list
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;;每一个turtle的全局声誉都存在此LIST中
) w0 v# @7 H. P6 a, Qcredibility-list/ V6 ^3 B- U) {, E3 z/ L6 U# i
;;每一个turtle的评价可信度3 Q5 {/ Y2 j0 Y- k# |. N
honest-service
8 v, H- F+ T( z" d; M# tunhonest-service4 O( O# F" W- d- F V7 W/ r1 ^5 a
oscillation
! D4 |/ f; ~# o1 }5 N8 urand-dynamic) a3 F. x7 f& L+ N Q
]; n2 ]+ R" L% j$ M
, x: r8 ?3 s7 P& p) M; y& rturtles-own[8 k3 t( P/ T [4 y9 s9 \
trade-record-all
- o: e! \$ I+ T- J4 L6 T5 f X;;a list of lists,由trade-record-one组成
# R, d3 D) B+ q! X' @& Utrade-record-one
. g7 O/ e; R+ l. k0 [7 e2 P. ?# {3 {;;list,trade-record-all 中的一个list,作为暂存用,记录两个turtles的交易记录( h% s* f7 K: ]2 N0 p% @ S: K
* H5 } C% c4 };;[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]]
+ ~3 P* s8 l; {* Itrade-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]* m3 d& A+ I2 k) S" s5 s8 g5 y
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
1 {7 L+ v- s# w" d6 V4 Wneighbor-total
+ L: S/ G( q/ M) `9 K$ `;;记录该turtle的邻居节点的数目
& F) w i, Q( D" M3 }$ a gtrade-time
, J! ~0 Y: _/ W. E2 a$ ~;;当前发生交易的turtle的交易时间
) R. U; i6 o3 K R5 a% k4 i' J1 _4 k [appraise-give$ g1 J3 K, y9 m1 R# U
;;当前发生交易时给出的评价
6 {! i2 K& [, i) H, \& aappraise-receive& v! |+ c5 I0 b) `
;;当前发生交易时收到的评价8 d" a: K1 c& e. z( o: K7 ~7 O
appraise-time$ e" u) s4 r: L f5 f* \6 r( B
;;当前发生交易时的评价时间
& [/ m$ Q( w, u( g' V# b0 [& ]local-reputation-now;;此次交易后相对于对方turtle的局部声誉
+ ]- J" W1 o1 `) V3 I8 \. Ptrade-times-total( d. m, s: y% k3 L6 V; s
;;与当前turtle的交易总次数
+ E, a8 k- Y: B! U$ ptrade-money-total
8 t( M1 m1 ?* N8 S1 O; U7 e# z;;与当前turtle的交易总金额
2 ]$ s8 N1 D4 U2 Zlocal-reputation
" I( N# E: U% q" T# F3 t% F' Wglobal-reputation
. H! ]; O( a" {4 dcredibility
! V2 l a$ h9 O4 ^;;评价可信度,每次交易后都需要更新2 A& K$ K- J+ H- ~
credibility-all
- ]8 h; @6 q* i" l+ U* l;;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% Z7 q: k$ D4 s' c9 J0 w! V; h% x4 Y
8 |# a' E$ L- w8 g8 {;;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
* v8 {+ [$ y5 ?+ tcredibility-one
1 G* }1 H2 f8 A2 V8 S# L; N;;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
$ G- d6 y( j- ~) `6 fglobal-proportion: ^8 q- X4 G& n3 K
customer
$ j6 {! j. o: f E% _4 hcustomer-no
, ?& h9 z6 N6 H6 ^4 H: Rtrust-ok
]! z5 V; ^% _& ?' dtrade-record-one-len;;trade-record-one的长度7 t2 h3 Z' G8 r! `
]
# }7 h4 a+ l3 F: g" i( Y8 R- I& {, d
% Q/ \+ G/ t7 M* ~6 M, `;;setup procedure
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to setup
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" a7 }& o. A' { p4 M* M8 j, Kca) e" ?. a- J0 {+ e
4 O: k# J+ ^% W9 a& v* A
initialize-settings
- S d3 @ A0 R
2 E; y6 \2 z7 g' |3 Qcrt people [setup-turtles]
6 K, `# [" Q5 N& X2 q0 Q+ w# @% o. R& U/ W* A
reset-timer t5 I5 {$ T5 X; ~3 D: a. L9 q
" o: B! d4 z- J* z5 b9 o. K O& ]poll-class. U5 E2 x" r! E% E4 ]" i
- X# H. @4 ^' @$ _1 P. L4 d) msetup-plots5 M+ w0 \3 F3 X# P3 y; P% C
7 Z. E" z+ j3 ~ x6 n
do-plots
, A) S! [% G5 _- C6 _' o8 kend' |# V- j w/ @& L
/ O1 v6 E4 P2 Y5 N$ N/ fto initialize-settings/ g7 T+ O5 S7 w1 ~8 A
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set global-reputation-list []; @1 \" Q5 b- T$ W6 O" n
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set credibility-list n-values people [0.5]
* { N6 W- _2 N% u* y
0 e9 h' x4 \/ b4 T, r% ~set honest-service 0
3 y0 I6 f- s* t
* f* i5 d. s+ b1 u0 Q; ]set unhonest-service 0
% a6 K! L& m: I+ |6 A) a% N- T2 L
7 P( X2 j1 B( F! `set oscillation 0$ d M8 z+ T7 g2 v5 ^- o
: {4 b3 @* }0 z. V3 Tset rand-dynamic 04 b; r( e9 ]* }' i% s0 D
end4 N; j/ d( B0 m ~6 A7 C
$ o2 ~8 J% F# pto setup-turtles
" r8 o$ z) l* D5 B9 y' t6 Z+ aset shape "person": Y; `! |0 G: |9 b6 u0 }: ~
setxy random-xcor random-ycor8 f6 k" h! {4 n: B# |* U
set trade-record-one []; D" I/ l2 G; T z/ W# a
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set trade-record-all n-values people [(list (? + 1) 0 0)]
( |7 w! Z; n4 C g j$ {7 z) V; Z; g y o& k/ R; c
set trade-record-current []" S7 ]! `, T* @ t
set credibility-receive []6 D |5 {, _) G, x( t6 M
set local-reputation 0.5
$ o1 _, F4 w6 d2 Hset neighbor-total 00 K5 o3 v0 T8 J
set trade-times-total 0
5 x1 l( w. o2 q& q* Kset trade-money-total 0
7 D) j6 v n/ t0 gset customer nobody
1 R5 x6 P, ^+ F4 e! N- z, V' O8 eset credibility-all n-values people [creat-credibility]
. H) H0 z" ?9 q5 Y6 d/ Rset credibility n-values people [-1]: E. _. x4 H4 P8 c& M- i
get-color* _& @2 o; S' u4 y" L( _) m
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end$ A% K$ ] s! W1 ~ k3 y; Z7 J2 P
5 N, Y4 h/ w: }" Wto-report creat-credibility
7 {3 D: q7 V, c5 F2 ~report n-values people [0.5]
; x9 q8 }$ G p) }end
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( @& D+ J/ ?4 |" Eto setup-plots8 _" O4 r* j" f% y" I' Q
! P. w# [' R# _5 G2 m2 nset xmax 30$ O- g* m" e" l' E
) J! x$ L1 b' p. q+ h* }, ^set ymax 1.0! ^" M* G: i; m
; C( J: W0 G% K& ]8 Z7 h Bclear-all-plots- ^2 o/ R3 e d
c; B3 z' v, g: fsetup-plot18 q7 U& M0 E$ c$ \) a' J3 a
9 s: ^( U# q9 vsetup-plot2& a& }9 {0 S8 u2 I! @' K q2 C* g
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setup-plot3
' E! v* l. m4 H7 wend, k7 @3 {& j( g- ~3 y2 {
0 i( L G5 B+ g. U7 B$ j( Q;;run time procedures: C7 L1 U" S/ C' m; N& c& R
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to go; V0 i. X, Y! B
[: A' ^6 N/ Y) @0 y% R6 o( {
ask turtles [do-business]6 C6 S$ S. ]5 c( g& U" Q. F
end
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4 H4 D! e% h# d$ F7 A- jto do-business
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7 _: [: c' s/ ?% Lrt random 3604 y7 T3 c/ O" x- V* b7 N) r4 v
P% v8 E" X# k) a. Sfd 1
+ S5 k: n _: j7 _, Z7 {, Y0 Z+ z ~- ~/ D; p
ifelse(other turtles-here != nobody)[
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+ R/ e5 V$ I9 a u7 |: kset customer one-of other turtles-here9 W4 c6 ]& X: C: R L9 H W
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;; set [customer] of customer myself
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set [trade-record-one] of self item (([who] of customer) - 1)
; S. I' m5 L( p$ G& [1 D[trade-record-all]of self
9 N g" n( ?6 @& c/ h0 ^;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
' Y. J* C" V5 C4 j
5 G" L2 O4 e$ r. X$ @4 U8 ^set [trade-record-one] of customer item (([who] of self) - 1)
& e& [, Q. c- D' `- {. p[trade-record-all]of customer* b1 E. p# B, H. |
- }) D. |1 D6 b3 p4 T+ x, pset [trade-record-one-len] of self length [trade-record-one] of self Z0 A0 P6 X( ~' ?! z* v. m/ L: ]
1 x2 A- N/ _" u8 b$ m: ]set trade-record-current( list (timer) (random money-upper-limit))$ e: B# @9 `; R. P
F" l/ A( o7 a' i( n& t8 _ask self [do-trust]
6 }+ }7 R* h% r7 P. i- R;;先求i对j的信任度
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if ([trust-ok] of self)# ~9 K) b: _* s& w1 e' Q- j, a5 Z2 ~# ]: n
;;根据i对j的信任度来决定是否与j进行交易[
C: B- T6 E, {1 p$ H, o+ v/ u1 kask customer [do-trust] if ([trust-ok] of customer);;这里可能会用到myself
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[
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do-trade
5 }. F% B7 X7 B# W- m2 d! ~+ C E& ?2 y7 f; `7 N' X9 `/ I
update-credibility-ijl
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: |' e( D5 N% Xupdate-credibility-list, D2 X; p% G. g7 ~5 t* P& Z( D0 L' E* u. y
1 T. S3 l' [( ~3 g
: v1 @4 t) u& r9 X) p3 dupdate-global-reputation-list
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! Y/ O! e1 u( O" ]2 Y% d% I4 Lpoll-class3 S. Q5 a$ n' O! W& e
0 g! J5 g2 w$ ?& o8 Wget-color* O" B D- `# |8 f
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]]1 a" v+ Y+ u/ G* z& y
8 t& _6 r. _) {. Q; }8 [
;;如果所得的信任度满足条件,则进行交易( S, P' t. ]1 d5 c0 {! |2 J: M5 t
" w. \0 H' V: ?- r+ q[& w- c j3 T: N; m" m+ o
: b' Q$ m9 O( V% f* ?5 ]rt random 3609 D0 @$ g3 J2 {- r, x: u5 C" k/ a
7 t5 N( S: O1 ]$ v
fd 16 ?; e# e; y' i3 |2 N
7 M0 K0 {2 y) \0 j! f6 T* Q
]7 X* Z9 ^ t) _3 H7 C
4 S1 q' n9 y+ S) M9 Y# @5 {4 s. Yend) M7 |1 Z# ~. N( P0 j
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to do-trust . ?% Z. r- t0 A: U6 e6 h
set trust-ok False
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( `/ R4 ^9 {7 M- M9 Slet max-trade-times 0
! M( ^! Q7 i" Aforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
% j1 t8 } a! r9 qlet max-trade-money 0
9 e6 K* `6 ] r& B7 [foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]- l; [) b% J0 ~: g/ b1 h+ c! f
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
+ z3 d R0 a8 s \( j, u- _3 Y( o! x) l
( p" d ^) L$ S$ Z/ `) ?# p% _" ^8 L, _
get-global-proportion4 o, I1 U* }4 R1 M8 S" K
let trust-value
* G% z7 P' J9 k1 Q( \' ~7 X& M: tlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list); s6 B6 L% v9 g% K7 Y4 a# W
if(trust-value > trade-trust-value)
1 M1 T, ~& ~, S' K[set trust-ok true]
8 e- ^/ R+ Z7 h9 send
9 k, b5 u& s. a p* \
+ U' n" m5 i, k% R$ gto get-global-proportion
( }. Y6 S2 R6 P/ Z5 C5 y. A: [ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
% h$ A1 I5 A* @! B n( C1 h[set global-proportion 0]9 N3 B2 e, l. O; q" S2 `' \
[let i 0; X, t3 d+ M* Q' D9 c0 U8 v$ g
let sum-money 0
5 L$ l% v* v# q: M; @4 T* m2 G2 P. fwhile[ i < people]* K# B8 F) Y7 S L9 P9 C0 A( J3 W* d; `
[
5 W! k$ @( l/ c4 L3 P* t: [if( length (item i
) n) C$ q# I7 }2 Y) f$ j[trade-record-all] of customer) > 3 )1 ^! e" d1 x9 \0 A
[3 S8 i p; v1 s; e8 t1 G
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
; y/ P* |2 a4 O6 X]
4 H' t* Y: L& j/ t]. L& H8 W* b; _& w; d7 @
let j 02 b% R7 b4 h& m D- s! N
let note 0
) Y6 q7 t9 b% F4 Gwhile[ j < people]
" r1 w3 O9 r5 W9 F. m/ ] ~+ w D[
) K; u) g6 L0 X3 H; Y6 F" Dif( length (item i' m7 R5 V1 O2 P9 w5 S/ n, [
[trade-record-all] of customer) > 3 )! N; k! _) }8 B Q' w, G& s6 \
[6 B$ ~; M; Q7 E7 P+ L- m L% y1 r
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)4 {) M2 J" j9 B2 [3 \
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
_ [/ ]6 ?+ F. r% q w[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
, h+ F7 c7 u, r: }! T; ~' d( {]
) D8 g2 F, `2 y' c]# b4 j/ g) g2 W1 F6 V D
set global-proportion note
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5 a+ L* ^9 C0 a: [! M" f8 `end
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G# m5 `1 H* ?4 G% X- \- mto do-trade5 `* z" e4 q# ]/ Z$ o& X
;;这个过程实际上是给双方作出评价的过程
! `4 z2 e* b, N. |set trade-record-current lput( random-float 1) trade-record-current ;;本turtle 得到的评价' C* }" |6 w( ?" k* k( g7 d/ A/ y" @$ C; Y
set trade-record-current lput( random-float 1) trade-record-current ;;本turtle 给出的评价. d; Q4 R; S# u. v* G3 \7 P& E% _
set trade-record-current lput(timer) trade-record-current
/ k: |4 y3 T8 E, Z; |;;评价时间, o# h' V' ]2 h6 U0 B$ d
ask myself [
5 f5 X- v% O6 |( Oupdate-local-reputation
% h6 H2 A- `) a3 Eset trade-record-current lput([local-reputation] of myself) trade-record-current, M& F7 N$ \9 q, O5 x# @9 V _
]' ?, G- [. V& p+ {# z% u
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself$ j- R: A6 h1 o) f9 E
;;将此次交易的记录加入到trade-record-one中
( {- w% {; n- d& g9 ^! jset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
5 b5 `- D) } g9 {) h' c8 j& Plet note (item 2 trade-record-current )
* g8 P; l* q+ y% ^2 k3 xset trade-record-current7 X: c S& a6 H$ K$ Y
(replace-item 2 trade-record-current (item 3 trade-record-current))
3 m% o# ^, u) ?* n5 C p) zset trade-record-current E5 `5 e* l: U# a
(replace-item 3 trade-record-current note); N8 d3 I" B- H+ r" R- E/ ^3 o) a
1 L' W1 z$ N7 a- h) g C5 K6 L3 P$ y" I* I
ask customer [
& t: I2 [3 J, y8 N; ^" L9 pupdate-local-reputation
6 N& g. F- J' r- z8 c, u0 j n, m$ U/ Fset trade-record-current) v. j+ F. O0 I; Y/ D9 P5 V' s
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
1 O7 H* {, I& X7 v; b0 X]
3 U) R: u0 E/ R( @8 k0 \, ?9 Z# A0 k# W+ ^7 T4 h$ ~, k
9 F" B8 q8 e( `5 Oset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
v6 P3 h9 \# }- G; z, ^+ F: K) b% U
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
, l2 m- F2 S, n0 a: Z;;将此次交易的记录加入到customer的trade-record-all中% g7 S+ b! [' @+ N
end
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to update-local-reputation# H7 V; T) C4 L" I+ K$ X. v5 N
set [trade-record-one-len] of myself length [trade-record-one] of myself6 V8 K W d8 p s' } j; A: F
) M9 y) p0 @8 v3 I4 D+ ` K9 e" L' D( K! S
;;if [trade-record-one-len] of myself > 3 . C9 P" y* x8 q- B, X" S
update-neighbor-total ^; A8 X- i' o$ h9 H+ R1 C
;;更新邻居节点的数目,在此进行
: l4 R9 W; F4 I( z- glet i 3, [$ ^' S% s3 |' b' N" r
let sum-time 0- G9 }0 ?# W# T" W- b
while[i < [trade-record-one-len] of myself]1 `& t: S& [* C3 j( z
[
* e/ H- E/ c/ K4 Vset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
]$ r. S+ s( K4 l+ dset i y/ R' ?7 Y7 D+ l: s; G- Y- l
( i + 1)
) D( A% s+ f9 T% z' j]+ i! S9 N: m* Y0 O
let j 3
) \" H1 Y$ M7 clet sum-money 0% ]5 |7 F+ T5 F2 f2 U* b
while[j < [trade-record-one-len] of myself]
, m$ a; O- D8 R9 M. s% v[" z* r; B; X" |! d
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)1 s6 J& O, T: I s
set j# L% d' |4 N; K; g
( j + 1)& N* K# M* J) q- J, K1 y- \
]
, }1 s" C( Y0 F% I( A5 rlet k 34 A+ V) o8 G9 x9 E- b8 ~ g
let power 0# A P( ]9 J( v% |- S; k# @6 h" Z
let local 0
c% d- d! M: M4 j) Awhile [k <[trade-record-one-len] of myself]" h5 X1 } d5 j5 m5 V" ]
[ _; d: M, a, U
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) 5 Y1 A E& M M" e( j
set k (k + 1)' U9 Z4 j# Z7 N# t' C) o9 K) N( ^
]$ ~& {# `8 ?3 |9 ?
set [local-reputation] of myself (local)' t8 m' y" d* W
end
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to update-neighbor-total2 J, W/ y3 M/ u3 h0 d4 x
6 k7 Y$ q x/ F& L! yif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
! ]; ]; J2 Z2 u$ J( A$ X+ K8 ^; ?* n1 K( b' w1 Z) e% z4 r) m
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end [% F: f! S( w% |( v
+ `5 \4 g) ^( Y& I1 m5 C, D
to update-credibility-ijl
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* D6 ~6 x' Q9 J;;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。
, C* R* {3 f c- A' Z$ h2 y6 b, T7 Llet l 0. I r& N( ]& l M% G6 P8 Q8 b
while[ l < people ]
% h& M. ~9 ?; Z8 Y1 G;;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
[8 n' e8 F1 v[
# v# n/ f& x' y5 a$ blet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
5 t I/ M: f; w- u% C. g6 |if (trade-record-one-j-l-len > 3)
( \0 d6 D* m; V% J% N8 ^ i! P[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
# z3 D: F9 N( v- ~; Clet i 3
. ?! V7 h9 L3 P; g1 Wlet sum-time 0
2 q T7 u0 `- H; q k1 I' Ewhile[i < trade-record-one-len]
3 R4 U4 Q# d8 ?4 K: x, w; _. g f[) _( j5 ^+ O" y; v# J" @" v
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )+ u) y4 d* g- L$ \
set i4 { Z0 q: a4 j, [) H/ z
( i + 1)
8 E* z$ b: G7 }+ w6 B/ x]
" t1 T0 L0 \( _: c! ]" dlet credibility-i-j-l 0
4 j! i- V; l" e6 L9 ~ Q: _9 z;;i评价(j对jl的评价)
5 h0 D4 L, S9 Z( plet j 3
; P! @$ D" s4 Q( m% `0 P, f8 `let k 4
! B0 s6 u8 D) Y; kwhile[j < trade-record-one-len]
) w; r8 o4 R# }. c2 x! A7 q[
/ S& ~/ Z( |3 E( D8 fwhile [((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5 J2 m0 b! Y5 B% y
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)
* x/ [7 N/ Z- {$ X5 Eset j
. G: q) S- @# D5 s( j + 1)/ H- w% F3 p3 B L, b2 E
]) t! H' P, J2 W. Y3 q' M
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 ))
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* k$ Z( D4 b/ @6 n$ e0 j, A- ~* u- o+ ?# D) l# Q" H
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))& e9 ~$ ]- N8 b$ U) B
;;及时更新i对l的评价质量的评价
% h, |' a0 c% F+ ?" d7 |set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
' ^2 B1 `1 l% g' Y; Q( iset l (l + 1)- m7 o+ c1 n! P9 y2 N0 w+ X
]0 D* P1 y$ N% K6 p# }( |2 S
end
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to update-credibility-list
* }7 ?, n$ x( s% q3 Y" Y: _let i 05 l, ]/ E: T5 R D; q* l
while[i < people]
4 g7 U; K/ W0 @, j4 r[: y9 @0 n9 E' T* N- y% G
let j 0
1 q! e8 [( l! x: Q0 \' i2 zlet note 0
; c! J( f, V* R9 J" Olet k 0/ d* p3 h1 F& o; j
;;计作出过评价的邻居节点的数目
& i l( @: C( A8 G X4 y, c. q& N# Ywhile[j < people]
& Z8 [( x6 d1 ^. V[
- P: Z4 C, D" ]* K ?2 J. eif (item j( [credibility] of turtle (i + 1)) != -1)
" l. D- ^/ r' h( {# C+ n;;判断是否给本turtle的评价质量做出过评价的节点; [. G8 L2 {9 e7 x* L, Q
[set note (note + item j ([credibility]of turtle (i + 1)))
9 L$ c+ y& X+ W2 Y S" Y8 r. s, N;;*(exp (-(people - 2)))/(people - 2))]7 l4 O9 B Z0 Q- P% `
set k (k + 1)8 ]; E k' |/ z" S. p
]
' g0 v! Y6 u* X7 Kset j (j + 1)
; ?2 n/ s6 r9 k7 l j9 e]
6 o7 ~. k' ]6 |# d3 W: u1 mset note (note *(exp (- (1 / k)))/ k)+ r8 y, v' ]2 j5 L
set credibility-list (replace-item i credibility-list note)
3 {/ g0 Y/ x2 K7 lset i (i + 1)/ }. f0 E6 @$ j0 y
]
" u; z0 t( A( d- @' C& c' Rend' L% b9 i ~( L7 Y7 M2 e
/ Z0 W! X( b4 O! N. ~9 j8 Q5 v) Nto update-global-reputation-list; {6 m c, y2 s( P; l2 E
let j 09 J8 N0 L, T7 t3 O+ B
while[j < people]7 p% j* F7 M3 f0 I) r
[7 e4 }2 o [& t* T
let new 0# @1 R$ v! Y- {( `! ^) i& a ]
;;暂存新的一个全局声誉
% [9 D% v \# ? P2 Slet i 0
6 y( _ i+ j' ~ f) {4 | vlet sum-money 0
" [) d5 d5 E) A, Nlet credibility-money 0. g9 t# _8 ?+ z7 q6 b
while [i < people]
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" \& B6 p* f' c v5 Fset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))* u% G- X2 {/ r$ ^, P- }
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
3 }" @3 ~, g. C. U1 Dset i (i + 1)
9 x( z% v: |+ h3 `7 |- h5 @$ v% h) L]5 L. {' ^) K% d" p
let k 0# Q& f1 M+ E+ a
let new1 0& y0 S/ q4 {- E8 h3 X
while [k < people]
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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)6 x6 Z b0 P! p8 _: I; N$ q
set k (k + 1)# P7 Q$ V% Q: e) {0 B. T
]1 i6 ^5 P2 @0 a
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) " K8 W$ m; G" j+ s m4 R. |4 O
set global-reputation-list (replace-item j global-reputation-list new)
1 U, t/ ?9 g5 ]set j (j + 1)
8 o9 c9 n8 C+ r1 r: ^, o]+ F! B6 J7 y( x4 d# n3 [
end
# S' J, U8 U% t! ?8 B$ h
# x$ J) T. T/ y0 t9 J5 m6 ], a- ^' k2 ~
. ~; ?; ^1 r. o/ R% w( r
to get-color. C1 D8 u3 ], O7 ?
5 n _& u# Q8 V* q' X; Z2 o% D* A
set color blue! w9 N- N& _& Y& c: l: b
end
; n# ]" a9 L" o& x* S1 M9 a9 a' V, K1 s5 p2 {) d3 U& z
to poll-class8 i) F! @) P: ~
end
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to setup-plot1. I! e/ _0 C+ @/ @. C
1 Y7 v7 A5 l6 [, H4 j: ~% P0 aset-current-plot "Trends-of-Local-reputation"# p7 d/ s! |0 @
& u. A6 g. H) o+ Y+ R1 gset-plot-x-range 0 xmax3 G0 v: O" S8 [/ f
3 G+ q# z! n. t: w! r$ Y
set-plot-y-range 0.0 ymax7 s) \# ~" ?' g2 L' l, S8 n. S
end
1 E3 l: i) k/ u" V% u4 r( n" t0 S$ E5 @7 c% ~5 ?6 j
to setup-plot2
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set-current-plot "Trends-of-global-reputation"0 L; M" y$ H7 N+ X, r2 g( O8 u
, A$ \ w, `# ~- D/ j0 n- m
set-plot-x-range 0 xmax
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set-plot-y-range 0.0 ymax
& i; Y, \# E! a# m4 j' t0 v5 zend! A6 _5 \ P+ s. r5 X& B& A
F1 W9 M) x5 o* j: k, D- m4 X4 nto setup-plot3. z. h4 C4 c0 T6 L9 H
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set-current-plot "Trends-of-credibility"% ]3 w; Z* z" _8 t2 }
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set-plot-x-range 0 xmax5 s3 @# M8 b, @! O
: U2 e" W" i! G- ~set-plot-y-range 0.0 ymax. h. a3 q& j P+ K
end
& t( F8 c* s+ w4 h
& y1 I/ _3 w6 ~" Eto do-plots* d/ ~ [+ Q8 m/ V
set-current-plot "Trends-of-Local-reputation"! K( `+ ^# V3 p& |& D
set-current-plot-pen "Honest service"+ d6 P* }' u8 @- }( u
end
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[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ] |
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