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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
4 n' v# [* @. r3 s4 Z2 b; s, ~globals[
1 E$ q) e, q2 g* _( W% Nxmax
7 ~; C: N8 \+ ~. I" b7 Tymax
4 Y6 O- [, d" q' O& v1 c' t# {/ [global-reputation-list+ d- ^- L8 h6 \) ]2 L/ U
4 X" b3 B) e/ r3 u- i4 G( T! u) M* s) M$ Y J;;每一个turtle的全局声誉都存在此LIST中6 J$ m$ I( w2 H2 q
credibility-list
# n4 q8 I* p- V5 a9 L y;;每一个turtle的评价可信度
: T8 Z- ]! r& H) p' chonest-service
* U7 {7 R: F" zunhonest-service2 T( F2 S% Y/ r( O' F B
oscillation" H% V$ P, |: r! D) E
rand-dynamic2 N( R, B% d! R. Y) S
]
1 u2 u M6 B9 J* k6 u7 X4 O; T; w! b x1 f: A* J4 H W+ a
turtles-own[
/ p' g2 C; y, j' Utrade-record-all7 a+ Q' [* A, N" X
;;a list of lists,由trade-record-one组成
/ y4 u6 o4 S# {) X7 otrade-record-one
- n; L6 B0 E% X5 h8 N Q;;list,trade-record-all 中的一个list,作为暂存用,记录两个turtles的交易记录
' J1 K6 _# C5 |+ W$ a; U( Y8 z& N, [9 |0 L0 m2 e
;;[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]]
* g6 q; {7 }- M( t8 Z& 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]4 {; x* G8 s3 { I6 ]# Z$ \: Z
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 u- R/ h1 h1 u. u% p4 ^1 {' p7 xneighbor-total5 [# k' n3 t/ a& [5 X" ~) H- z, s6 M
;;记录该turtle的邻居节点的数目
# s) e- }: F$ y/ e* Ltrade-time
: B1 {* j- A2 ], Y, E;;当前发生交易的turtle的交易时间
Z7 E: m8 W# f) ^& Zappraise-give
% S8 s0 f# Z ? P0 ?1 k;;当前发生交易时给出的评价8 }: T6 P7 c) Q6 U, [
appraise-receive
( s* w |) @2 N# z7 r1 w O+ v;;当前发生交易时收到的评价
/ x* E- A0 U5 v# f! V8 jappraise-time3 Z: b% A7 L3 T% ?0 N
;;当前发生交易时的评价时间
2 A# e) U: v3 O- llocal-reputation-now;;此次交易后相对于对方turtle的局部声誉" ^# K: ]" _" S5 c
trade-times-total C3 @& x1 U5 w" T
;;与当前turtle的交易总次数9 c+ {, g. h; Y! e, F' g% M3 }
trade-money-total
, X8 H' U/ W0 N3 m: k# U;;与当前turtle的交易总金额# G9 n( W1 l% a/ ~; d
local-reputation
# T3 W. m, s6 m, N' C1 eglobal-reputation! B1 M0 z3 E1 l' C
credibility
; ^8 ~! ^9 N1 ?) T9 Z' N;;评价可信度,每次交易后都需要更新
1 P* M1 b6 w! O8 x8 |- E3 Ecredibility-all3 L% u: k4 @' t% C
;;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 H$ i8 y. B7 E1 E! R! c8 `& b* a7 }0 E2 h; 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0.55 L; O! \+ D1 g, | w
credibility-one: x b* F/ u N+ R
;;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
7 f+ u8 O3 ^9 [5 ?+ Fglobal-proportion2 L: _( v9 l8 N
customer
( Z* t# K/ C$ N$ u0 s( ecustomer-no0 x7 ]/ C' j+ S- R! {
trust-ok
0 K- {) B; E, R, t/ C8 ` A- jtrade-record-one-len;;trade-record-one的长度
" b) K4 N* f3 X5 z3 X4 G) r) L. V. H]
# W" F2 y0 m; B- U; n& b
2 S* p2 K; V6 @7 a. ?- Y;;setup procedure
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+ F7 W$ K6 }7 z4 U# Cto setup
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ca
+ @3 s# e5 i% z: Q0 x- z* @$ H- Y; @- v8 ^6 p
initialize-settings
6 }5 n; ?3 E8 o+ w! Y, H
7 H/ Y0 Q% J& n) \- lcrt people [setup-turtles]) r3 q/ w; K$ H; d; g9 {/ W7 E$ |0 X
5 k! d4 M- ]) {" {
reset-timer9 R8 B& t# \* r5 x& ~0 G( Q
/ {9 m; e. l% [* n" C: K! @! Y7 x+ C
poll-class
% C5 `; O l6 V& z
5 Y, {! Z8 `8 i1 W% s7 T8 ?setup-plots" ^7 I& T5 l" V' m
9 q* a" {3 S: h& z. p: [do-plots
& V2 ?( i7 u: h6 p7 O/ v* oend/ y: V( [8 a* H2 @
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to initialize-settings
* j% g- R3 b! J+ f+ X; x' I! e# J, e
set global-reputation-list []: _0 X: Q. T! r! K' @
; S. n8 P' w8 @/ X
set credibility-list n-values people [0.5]* p. V8 w+ u0 Y4 h7 Y; }# b
- `* N# a& a$ _" {( vset honest-service 0
9 G/ L. M- F6 {8 W) L& t; F9 l: Z7 ?1 O, v" t! ~
set unhonest-service 0# A( `1 I+ g: P$ @& z' P
3 s2 q* [8 Q/ j3 Z3 b" L+ E1 ]4 eset oscillation 02 R) Y+ P6 H% G" ~- @& s; U
! e, y0 o0 ^( l+ ?) E! X i
set rand-dynamic 0
( t$ x9 Z! S+ l7 G0 w% T5 Q' J9 Iend8 J4 @8 Z" ]! `
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to setup-turtles
& z8 r' J. |; I' Pset shape "person"9 ~; |2 [. e/ M5 r$ ]* @
setxy random-xcor random-ycor
4 ^4 b: U/ i7 h7 Jset trade-record-one []/ |) g+ ~3 h, ]: `
# r: r' o0 X5 X: wset trade-record-all n-values people [(list (? + 1) 0 0)] 6 F9 }% _1 {; V9 E) V* B
& t* ?" ]# v: y) A& x, J
set trade-record-current []3 S7 k8 H& v: [: \
set credibility-receive []! e* t1 A) m" C) T) G
set local-reputation 0.5
1 T; }; U1 f; X3 lset neighbor-total 0$ L, s0 Z& m7 T: I* o- E
set trade-times-total 0
1 n3 H2 b, M! q; D3 i3 k- T* Eset trade-money-total 0
) ?( M4 k2 G& B& Sset customer nobody
: F1 ~2 V+ a" a+ w) y6 x4 |set credibility-all n-values people [creat-credibility]
3 z! G' h. G0 D1 q. G; }% [% j2 m) eset credibility n-values people [-1]
% S3 D3 n) }( w* ^4 ~7 F, k8 Vget-color4 }) k; g, N: U1 Q; d; I
# E9 O. N C3 T0 n$ p. j2 zend8 T0 H4 H; c* L6 t2 d8 a* V( B
% u, b9 [4 u# v& C1 U# {9 Tto-report creat-credibility6 Q; c V& T6 O! Q/ T
report n-values people [0.5]' q# j* u$ m$ a1 v- E; @
end
. s: B; d4 H5 G3 @) Z! S1 R+ W( P! H! V5 ^, A- A; {2 |
to setup-plots( V, ~* n* V1 ]4 [" w
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set xmax 30) N% y8 x$ N9 s8 t
8 O1 ^' W! ~% K; L: o7 Lset ymax 1.0
* I6 b6 Z( v- k8 k `
% J6 E5 `2 Z: c) g* e4 @clear-all-plots
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9 S3 M/ y, s" p& csetup-plot1
! i( [6 s: r, j8 ^- S% I- j
! }4 c8 e0 _* } x1 {$ xsetup-plot2# V" S- L, n6 i) k, {7 R
2 W1 l' ~& k. D/ P$ fsetup-plot3' B8 T; W M6 Y" a
end- h. O: D0 y; } q# y. Z
# S' r2 T0 ?$ @& v ]% M
;;run time procedures
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to go
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: j: o( v) u! W* a' \ask turtles [do-business]2 s2 p5 S' t5 y. I+ L
end
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to do-business
3 k' b4 m, e) L1 N$ T- \/ l
3 d' u1 D H, G7 p. v7 k7 n' z Y; T. l/ X0 F j
rt random 360- e& k# s/ I" Z1 O% K% G# v( x
* u0 r/ F1 m! y' g+ O
fd 1
; {+ t# Z! y4 b, t
6 b, o% i( s1 t0 M' k7 l% Mifelse(other turtles-here != nobody)[' s9 R" y5 [9 A+ a$ s. j F
t n: s1 A6 {" T: D9 s2 p1 n; ~set customer one-of other turtles-here
, K% ]& Q( H ~# b b: z
( _) d5 t& x7 Q, ]+ z;; set [customer] of customer myself2 k' L4 `. t6 o' _, a, M' P
/ R$ v0 ]' c1 [0 zset [trade-record-one] of self item (([who] of customer) - 1). u s! U! q: c9 Z
[trade-record-all]of self* T/ {2 _& R9 v ^
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self8 u2 \, U5 o: z4 X
( ^8 i9 _" m7 ?3 F! }set [trade-record-one] of customer item (([who] of self) - 1)
4 u) U1 M6 Z/ p, U5 V+ w" C. m[trade-record-all]of customer5 p5 ]- W, ^$ x' a. @( W3 S* {" ~( k
9 y! ^ A6 j0 v, Q/ s# Fset [trade-record-one-len] of self length [trade-record-one] of self9 b) i/ C" O# o. s a! {8 S9 i* m6 k
$ d- O# ~! [/ w) z+ u( N0 {7 C3 Y& Y
set trade-record-current( list (timer) (random money-upper-limit)): c7 m3 `; `. |8 d9 N
( V0 ]' `3 f" s% ^: eask self [do-trust]
: P( J3 d; K, L, |;;先求i对j的信任度, Z0 p+ m4 V* j- K( {4 D
7 A- j! ^/ M. p- p5 Vif ([trust-ok] of self)
: |' ^; [6 y5 S3 Y& f+ L;;根据i对j的信任度来决定是否与j进行交易[
: L, M: Z0 K1 e: x% task customer [do-trust] if ([trust-ok] of customer);;这里可能会用到myself
* D' L; S; N& q" t
( ^$ }+ {4 }; C[
' c/ r0 |# `- I/ K6 _7 f; x
# |4 w6 O8 F: `* Z8 tdo-trade
4 }" Z/ h; @' O1 Q1 r. d
# Q* E6 B4 ^3 F- n$ {: ]5 Supdate-credibility-ijl
A% }9 h9 E' [
6 K7 u |! Q1 ?( d) U* ?/ Jupdate-credibility-list
* f7 i# E3 Q3 x5 C& g: I7 ?, {+ H- }; G) L3 j& E
2 q8 d! f6 i( L; I7 l- kupdate-global-reputation-list
+ \) I" m: t3 U2 ~$ u
" h0 ^' x1 m% B" `& ]poll-class
' `" {# l& B: s1 w/ ?3 ?
1 \* g3 N, P4 j& |- S& p% [get-color
/ u' F5 I2 r2 f- M
0 B' j/ e1 B2 K- h. I]]
; `8 I) i: z/ l: C& f2 T6 j
; k; k7 E+ ~" p6 V# @6 H;;如果所得的信任度满足条件,则进行交易( W* u! E: Z/ f% q
' G. k% T: K! _- Z. L) n[& q2 B }5 E4 @3 ]
7 j+ K; ~1 [" W& x( P s3 ?
rt random 360
- c; p( y( W9 H5 m* a
& c9 z* l* E" K& dfd 1
. y( A' n1 c* @% L, ?
' W: B$ F5 m" z9 v]
* W5 Z' |% m; z! r
$ w I5 l" C8 l" ?4 f! lend
- V; X4 ]# D2 S0 v( e N. o* F* L2 q2 R
to do-trust 8 r/ Z) n" _) I
set trust-ok False: D( H/ z1 b, O" V
) N S3 r" J. x* D. B1 u- G/ R) y( p: B6 x# \# w. M( s/ ]
let max-trade-times 0
& E e8 B( M+ @& a* zforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
7 g- J( x) c; B5 J; z. S4 N& K! ilet max-trade-money 0
. r- t# h% E% ?. rforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
7 Z* P6 c8 @% K) Alet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)); f, S& {6 `% O" p3 s9 ~
+ R* O" f, l2 O9 R1 u4 T
4 g0 K0 s9 {# c) P# u/ a' Gget-global-proportion& l5 V9 c% E) R$ [5 ` }" Q
let trust-value
; P: z' M$ g5 `; ~8 T0 zlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
) |9 `& {( B; g9 Z6 l2 @- Dif(trust-value > trade-trust-value)" x8 a5 ]% J3 N/ G8 H% n
[set trust-ok true]
6 q8 x% p, O, L8 \6 z/ W2 i5 Mend
. |+ [6 c. ?) ^$ s
6 U% R3 Q. P, s* K+ i$ Z* qto get-global-proportion: r6 I+ L+ W) g, s9 D
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
' m8 H( o+ c( @' }7 ][set global-proportion 0]
& o: `* G4 e9 f/ U# ^[let i 07 N9 q& h* x; j* b5 d1 N; \4 a
let sum-money 0
, U& `1 K6 s. O, D; E' P" Fwhile[ i < people]
( ~6 b) ?/ _! m/ L. _6 `! e[" m2 U) T+ p A: U1 k
if( length (item i
' l0 i; w! A8 \[trade-record-all] of customer) > 3 )
/ {8 y/ ~( v! z$ D[
( _( w0 n5 P9 _1 Mset sum-money (sum-money + item 2(item i [trade-record-all] of myself))" S& H) g# z, o0 t6 ?+ N% X. g
]! i% I$ J+ {, `: o* Y+ m* x+ ]
]1 @$ |3 }: d/ H% J$ r
let j 0
) O2 k- U2 S& A& B0 A$ b" Qlet note 0% s9 n4 Y0 l) h# B
while[ j < people]
1 {4 i8 _) J5 g[
' e. B% J) j5 R1 a9 sif( length (item i
9 @. ~3 ~! e% M" X+ D3 a+ S4 k9 D[trade-record-all] of customer) > 3 )
6 K2 E; \6 D) X5 s' z[% L5 z. t. i5 e
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
- j5 c5 X0 z) b' g7 j[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]( L# ]' g& w. g: g) ?% F5 i
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]( P7 R, C! r, @
]. j1 t+ b) t/ u3 I" W, g9 m& m: f+ I9 |
]
9 t% }& ]3 I1 rset global-proportion note8 Q U7 \6 g7 ^/ @
]
& G* p* K% h$ Z! }) Vend
6 v6 u7 [, N3 ?# i7 N; U8 N, L y2 E4 O$ n+ E' ^
to do-trade
# W: F" r* q/ L7 a, z# k;;这个过程实际上是给双方作出评价的过程, ^6 k, P C( |
set trade-record-current lput( random-float 1) trade-record-current ;;本turtle 得到的评价
/ o; t3 z+ M* K0 @" Oset trade-record-current lput( random-float 1) trade-record-current ;;本turtle 给出的评价
% p3 @3 P0 u5 y! Bset trade-record-current lput(timer) trade-record-current: d6 s) z2 B' J# Y# I
;;评价时间% V7 C. _2 c0 z. H
ask myself [/ a; j( g" C5 _' z4 N
update-local-reputation
5 A; V! v* o3 j" p1 D$ D- Pset trade-record-current lput([local-reputation] of myself) trade-record-current
7 T! @* ?7 z. l* M]
8 \4 k$ d& o0 U+ @+ y+ ` Lset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself5 {, I) S& f9 x6 z0 J/ }, K0 k1 ~: d
;;将此次交易的记录加入到trade-record-one中
4 b/ U% R4 x+ d1 O1 ]set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
9 |* v+ m. [% O/ b0 Ilet note (item 2 trade-record-current )7 s" e' I* ]3 \2 j7 _" j
set trade-record-current
* s3 g* c$ ?. V3 y) s& b(replace-item 2 trade-record-current (item 3 trade-record-current))
: a+ H! p/ V# r* _' e! l7 @set trade-record-current
) [' C& q' y y3 i/ ~4 c(replace-item 3 trade-record-current note)
$ R1 V$ ^& N+ u- }; k3 K8 s* W. H% R, f$ s/ `6 u. h
9 v- P R$ O' m3 `. {) W2 Uask customer [
! n0 m3 |- G% H9 zupdate-local-reputation( P+ I) R- M/ Y
set trade-record-current' C! n5 V( U) p/ x
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer)) - V1 g$ ~# q. f, p
]/ q5 U9 M: h% L* v" P* \1 Z
X7 ]1 F0 B0 ?3 s: W
" x2 `* I1 T$ a/ k! Fset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer0 Z6 R; E; K( D* N3 L1 r" g/ k& L7 g
% S2 {7 O, |! U# ]5 E5 Sset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
! ?+ R+ m. b ~9 v" z/ @6 b% F;;将此次交易的记录加入到customer的trade-record-all中) |1 _2 c# D& J7 ]
end
- ?; R1 [/ n( L0 M+ f
" Z" Y/ l. Q$ x/ [; m+ j. l5 J6 \to update-local-reputation- r \- F, V8 X
set [trade-record-one-len] of myself length [trade-record-one] of myself
# C" C) y b) k* W& E
# T7 D7 K K. D+ v$ Y! Q
$ a, O9 b% L$ d& G$ ^;;if [trade-record-one-len] of myself > 3
2 |9 O8 o9 z: H' Gupdate-neighbor-total
# E/ G$ R9 j& j1 n;;更新邻居节点的数目,在此进行
. U$ u- _8 ]/ M1 q! |let i 3
4 B* }& s: c0 Z/ x4 ^) Nlet sum-time 0
7 W* l: v a$ u/ K3 Wwhile[i < [trade-record-one-len] of myself]
! q4 ^; i+ b3 R; Y3 y[
" n: i; W1 ]7 {0 hset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
4 K/ ~+ N% d: Y8 u# J2 bset i
4 r# o6 Q o5 i) r( i + 1)
" \" t5 s: N# U! M5 `) \]
! h0 c1 Q! \1 R! B/ ilet j 33 J% |9 C8 e2 \# B/ c! x2 `
let sum-money 06 q8 H8 F" J6 F$ O
while[j < [trade-record-one-len] of myself]
* L5 y0 i3 C; [. i* Q8 K, H7 S[5 D% L( b# g/ r: t
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), U9 Z. f& t1 u2 z9 O @# i& Y
set j6 w& m' n; j7 ]) G) ]4 j8 _
( j + 1)
( n9 C* g" \0 c# k+ P8 W: ~], j+ V5 F; h/ q/ X4 |' a) d2 |
let k 3 y' o* A% O4 r6 ~4 z, y4 U- A- I
let power 03 B7 ~. |/ X& l
let local 03 w% O$ B' T2 O
while [k <[trade-record-one-len] of myself]
9 C, g2 \# z3 q F[4 t, m5 d3 q) s/ [, |
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) & ^+ E0 c3 F( J! B8 }
set k (k + 1). |& X7 v! q' J8 w/ J e9 H9 h* u
] i# Q+ S+ }3 V
set [local-reputation] of myself (local)
: t I$ j# m6 X1 ~7 R3 s3 [2 gend
& H$ f. b2 T- Y V% }* c8 r" Y- g: p/ Q- z. S( H; g% p* `
to update-neighbor-total3 T; _6 A' U5 n$ l& K
# s# Y1 Z/ Q# j, ?# {4 yif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]0 w2 b( q% _! ~ U# U8 A
: U/ k* ]/ F$ d+ z! P$ n0 _# O& ]9 P& ~: [/ Y" K
end
. ?7 H# G! X% t4 Q9 f- G. ?/ a+ p. _& E
to update-credibility-ijl 1 ~' W4 L3 A& V+ N/ r
0 ~& u( b" U% N4 E
;;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。; a' {6 v/ a' \7 H& ]
let l 0; Q/ x# l2 l! L; T% u7 j: v: ]
while[ l < people ]) w, D7 V; N1 a0 R7 _
;;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
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let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
8 I% a% B3 X# J& n$ L" X$ W- Fif (trade-record-one-j-l-len > 3)
, h4 M7 f" E1 q. G% H2 l: j[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' u: {: C& T* G$ K
let i 3
$ i* C; ~2 _5 r, olet sum-time 08 d" c4 b* L7 u9 I( E, h
while[i < trade-record-one-len]6 V+ n+ D7 W8 |' C9 o5 e: B
[
6 q& H8 ?1 `1 l; |6 @# [* ^set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ); k5 D) J2 K R! S" {5 b+ d
set i: Z5 z) A. _# l: y' ?+ R
( i + 1)
8 _7 @7 l, J6 h/ F]2 j' B7 ]$ s7 S
let credibility-i-j-l 0
, E' S- h1 K0 a& x" V: G;;i评价(j对jl的评价). N6 O# s+ {6 X: J9 D1 m
let j 3
: v+ J6 @$ q5 @: Y% Mlet k 4/ s4 ^' j' a* S# w/ v3 Y: }+ w7 c& {
while[j < trade-record-one-len]* ]9 Y) T1 H- F# l$ ?6 w F
[ t' r+ R4 T, @/ n+ f. X/ v, m
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
/ k4 V5 u# S$ Tset 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)
3 _- ?9 d5 L5 X( W% ^set j: b4 [# [; l6 `) c
( j + 1)
4 |5 d- M( I! P& k]
7 ~8 a% X& e9 u; g) kset [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 o% C1 b1 x$ z" f
; p( p7 r0 u0 d- o5 Q& k& ~ E) v0 \" t
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
0 V9 R/ o7 t$ E; M;;及时更新i对l的评价质量的评价
4 ^/ H3 ?3 D# Z7 V, Bset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
0 G* U- T8 Y0 z9 H8 J/ Uset l (l + 1)
- B2 j4 q; B5 _: U! X H]
- t9 c0 v" L0 s4 | e+ {end
. X/ n. v6 [8 }& r% g# E4 ^) d. b
* T1 b5 @5 `) D# [3 v6 O: d0 wto update-credibility-list% I/ S8 _$ H! v2 X% J
let i 0
' o& w* _2 a5 M2 o7 ]* e: @7 N$ Twhile[i < people]1 G5 c9 q: C: c/ h W* E' @! Q
[
8 T2 z/ N& W8 ~( ?4 B4 nlet j 0# S& e J$ w3 @$ R7 m
let note 03 Z/ w9 o% {2 z/ ?# S
let k 0
8 t2 V7 _2 s- }" I# Z3 ?;;计作出过评价的邻居节点的数目
- z% a9 |- \$ Q& I+ Y1 gwhile[j < people]
1 ]8 s) t! m/ W" p& P' @. F8 @[
$ i, h- I, V# G( ~! Tif (item j( [credibility] of turtle (i + 1)) != -1)& \1 y$ K; r$ t/ `6 }5 d5 C: j
;;判断是否给本turtle的评价质量做出过评价的节点' v6 |- V' K% h
[set note (note + item j ([credibility]of turtle (i + 1))): N; Q3 Y; g0 ~3 W8 f
;;*(exp (-(people - 2)))/(people - 2))]
, z* I: q/ [* L. x# V' H9 a0 E& aset k (k + 1)
9 J9 h- m' d. g; U4 b6 q& \]' Z) `7 f+ O8 p" Z* a5 P
set j (j + 1)
# a! k, I1 d, V8 g1 O5 e0 v/ J( i; x]
$ K4 |6 b8 p. v$ L: s4 R( tset note (note *(exp (- (1 / k)))/ k)5 v$ G6 q$ @! d
set credibility-list (replace-item i credibility-list note)
' I/ `! E* `8 u" Jset i (i + 1)/ `# v% B1 Y. p; N6 ]
]
7 K$ i! V0 B. Z: P2 Vend/ h1 S, M8 L& E S
, B5 N. ]& j8 |! |$ Uto update-global-reputation-list
0 X2 y6 D" _, E- g) Plet j 0
# @5 r* F) {0 L- ywhile[j < people]/ h5 X; I( @6 g) V/ D8 x2 {: L
[
. J2 S" n5 C# l9 Llet new 08 q, Y4 X5 o v9 ?) t
;;暂存新的一个全局声誉/ E) G G/ ^: j5 H n0 l
let i 0. N( ?% f5 m( Z( r6 e
let sum-money 0
( M% P9 Q0 F" `1 p5 g/ ilet credibility-money 0
G* }) D8 l; o7 vwhile [i < people]
1 Z: b, _1 y' a: f& a[, Q0 D* [. e. @' L
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
" n- o1 r8 [, J) d& r( s+ v3 d; eset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))$ f3 w3 ^: T6 \, A/ e6 y: d
set i (i + 1)
* K" }7 b: J) o/ N1 R$ j]
( I7 {. V* T3 T$ o. k& ylet k 0" X& [, t" _4 S1 N4 d. g
let new1 00 O8 f: w0 O& f
while [k < people]
$ e' U2 ]( o: g, z[
; U1 j: C+ ?% y- Q6 ]9 Eset 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)
% `& @ B6 D0 ]- M& B5 Qset k (k + 1)
/ @) f# O$ l: U3 ?: T5 b% G( k]9 P/ Z* C( q* A$ |
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) # d4 r! _# [& ]; e* H
set global-reputation-list (replace-item j global-reputation-list new)
: X7 K) h# U- L& }set j (j + 1)( z. q% i M, Z* x5 U; N: n
]
2 W# c* V) j ?" k5 W" e( mend
. }; P9 \* N5 E* H
' O, ]( c' _0 k
% `# p8 l, ~# P- J8 n, A, d# f& t* h$ W# f+ s5 p5 i9 o; {
to get-color6 n* M# a: h$ M7 s# a
( f2 z0 [+ H# N" vset color blue7 v- b' o; ~9 T% R
end
* q7 ?% ^/ S" I- O3 X3 `/ h+ n; }) {: `/ |. C! h
to poll-class* L9 B$ j8 W2 z9 x: ^ r
end5 _, I8 |! M \
+ Y1 K Z1 n r z8 dto setup-plot1
9 m" n& [9 h4 N
; `& h2 {" O* F% q4 i* `set-current-plot "Trends-of-Local-reputation"
5 }2 g q( D7 ]) K) x! h( |& k% U9 m \
set-plot-x-range 0 xmax
% x2 B2 v, }& z$ m4 k# O
$ M7 z% R- p7 z% U# Sset-plot-y-range 0.0 ymax7 z+ `* t4 R- r8 o. k3 B* }- U8 b
end* l" @! ?: F6 j2 u
7 h# t2 a* a3 ~+ |to setup-plot2$ D/ c) n$ E+ } ^% g$ N# _
3 H! ]. x. p0 I6 X. E* `# @set-current-plot "Trends-of-global-reputation"
- H4 ?; u, s* v5 \* \2 q* Z4 k* q
. u8 a4 A" V& Dset-plot-x-range 0 xmax( v# V: K/ j t/ g1 @9 \+ Y8 N+ t. B
9 c9 J6 w+ v. }/ I
set-plot-y-range 0.0 ymax' L& J) X8 p" `
end- p) p7 _8 O* b* T3 n; P
, o/ U$ H1 d, a8 k* `0 h- R) R3 z4 yto setup-plot3
( r- U% A0 |! P/ ?4 J. F3 C- _! { H
set-current-plot "Trends-of-credibility"
! `) X" B. W ~. y7 ]# Z U2 w
' N' R- F/ Y3 |, g& zset-plot-x-range 0 xmax
. ?) [6 w0 z0 `5 f0 j) T4 r9 ]$ w' T C+ i
set-plot-y-range 0.0 ymax
+ g, F4 |8 ^5 ]1 C6 gend4 i9 n4 A' g) I1 b% b
( x* q' j$ O* d
to do-plots/ F, H* q. y3 G1 b& m0 P K- p
set-current-plot "Trends-of-Local-reputation": I0 H" t# o4 Y3 {
set-current-plot-pen "Honest service"
9 P% F. t6 Y& ]! Qend
" R# r9 J2 L) ?, @1 K, p: d5 y8 R1 v- T. ^: A$ e
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ] |
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