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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3 W- ^7 K5 ~: x: Y* Q. I
globals[
- X# ?3 v W7 D8 r# Kxmax' h5 R; Z, s7 ?1 C( r$ E
ymax
. w& U; Y* e7 a8 M* }. @global-reputation-list
4 u' N I/ R6 m3 i, a/ P }3 x% Y% z, m1 {* P6 f
;;每一个turtle的全局声誉都存在此LIST中
9 ?2 R" e( b1 l- X! s& }; `# M7 Ycredibility-list
! d& J0 G0 ?8 e9 g;;每一个turtle的评价可信度+ U. s! b0 x4 Q7 f/ l" P3 @
honest-service: z: S9 T3 x5 Y8 O" R4 ~' [
unhonest-service
1 O% B7 U% h0 ?oscillation7 O9 [. c% e/ q& ~1 C, e
rand-dynamic
9 @+ G! ~6 |6 _( A) P]
4 j* ]- J4 f+ N3 q8 J5 D+ f# ^3 C' w8 f- A; L2 {! a/ r
turtles-own[# R4 h/ g- h5 _0 D
trade-record-all9 _8 w7 _, p& n9 ?
;;a list of lists,由trade-record-one组成
) q" T! V2 ]; q' {! ~trade-record-one* [/ p f" I% \; Q0 b; X3 K( 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
8 \( _' ?& u8 X# T r1 E. l- }( \6 c
;;[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]]& N" T5 ]2 ] W* S& l1 b( q! [, y- Z
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]
0 J4 u3 J; w% x$ S0 I* c+ e; I4 vcredibility-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
" l& z9 J2 n, v0 bneighbor-total7 B4 l* E, I: ^: ?/ s) ~2 L5 ^
;;记录该turtle的邻居节点的数目7 `) h" T4 t* b6 H' B
trade-time& v& h, E6 V7 y* w! Z! F
;;当前发生交易的turtle的交易时间# z! Q5 O$ c3 ~5 k6 X! K
appraise-give
0 t f) F+ R2 r( U) ^;;当前发生交易时给出的评价! }0 b. x/ J5 _& } X4 E
appraise-receive
" N: C4 h7 ]) X/ \" m;;当前发生交易时收到的评价
5 H3 P7 f( Q) _+ jappraise-time
( K! A4 X: O/ ]4 j9 r& };;当前发生交易时的评价时间
4 b r4 M: Z' d% jlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
l0 t9 g5 ?' q/ l1 Etrade-times-total
8 R( C# @9 g, A" s;;与当前turtle的交易总次数
2 h! d. U) M, O Ttrade-money-total
; p( }& t, H% |3 ]1 j& s;;与当前turtle的交易总金额
! ^! Y" n/ [. j; @% M/ qlocal-reputation
; ^; D+ t8 ^% k0 d& ?+ s. ]- Eglobal-reputation& A) m6 C3 y% y! O+ S e. T x4 N
credibility
) j; K6 c2 @; J;;评价可信度,每次交易后都需要更新
6 ]1 r% J! A/ y5 K" @( Q8 b$ Wcredibility-all( o1 H F' q( t& _7 H6 N$ O
;;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
1 B l a2 b$ y
! g/ C* N3 C/ _, X;;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* c' ~% g/ y1 [* @+ {8 R6 T6 D3 o
credibility-one
$ A N7 b' b5 v( G' @/ _% ~;;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6 @" I1 A j0 j9 N" R/ a
global-proportion( ~* } K& p3 c4 x7 f& L+ x6 Z" U
customer
0 o5 F& c4 `5 v O. t2 Fcustomer-no
$ G, k! X0 {* X% n* I% dtrust-ok
S- p% T% V6 Y4 ?trade-record-one-len;;trade-record-one的长度
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2 H! v. k3 Z9 S( r6 F+ a0 Y. ` E" p;;setup procedure- @6 r% H% m. \& _
* Y( L; t' ~, v" c) V! z0 Y8 `0 cto setup
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ca# A1 j0 D( ?+ Q: i( I- u( v
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initialize-settings! b/ M! z& @* v* u
5 w' h% p8 r& e; ?# C+ }crt people [setup-turtles]2 _) i6 Q: S/ e w( ]' J
: ]% }7 J, U2 P* c5 n# ]9 J. }reset-timer Q; r# |3 l* u
6 N) J# e n) H6 i/ x' Cpoll-class
) Q9 M# Q! _. h5 K9 e9 G/ x+ Z& \1 K
setup-plots$ _* g2 D+ g) L) E) J, N
9 t8 j# ?1 _2 S; t# y) xdo-plots2 `) S9 _* k& E7 `. J
end
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to initialize-settings" D: H7 ^- h) e. F0 i6 w6 Z9 F
( [4 h6 c/ F; y: t7 w) Fset global-reputation-list []7 `! p) r, {7 X8 k3 `* b4 x
$ e* _3 L4 j; K$ @* j7 w- i! n L$ G
set credibility-list n-values people [0.5]9 _3 u0 Y% K& J9 o6 H
" v. X* R2 W7 I) `8 yset honest-service 07 Z4 A/ b1 T5 ?- M+ j! A( ]
; s+ A( S6 Z) o$ F: \4 S
set unhonest-service 0
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7 m. P1 g3 M; R; p% Y, b& h) N& ?set oscillation 0# W2 x4 Q( g/ n: L3 j' ~ h
! O5 W& r' J7 H2 e7 G1 _
set rand-dynamic 0
@2 I- z8 |6 B- cend
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to setup-turtles " p0 a* L% m4 ?, E- E9 ^+ Z
set shape "person"# e3 u4 j/ ^& L* ~, J X6 r. t! X/ H; p
setxy random-xcor random-ycor, s0 }3 X$ I0 E& b* H: N/ M
set trade-record-one []
& l0 r. m w6 \& O# z# \& ]1 O8 H; ^7 q
set trade-record-all n-values people [(list (? + 1) 0 0)]
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set trade-record-current []9 q4 e. b4 S3 K0 R
set credibility-receive []! G5 N! I, i( N5 b5 `
set local-reputation 0.5
! e1 R2 \0 o8 p: S+ H7 Eset neighbor-total 0. z0 ?4 s2 A& [# k* S
set trade-times-total 03 U: V: n: E4 d2 d+ k9 }+ X
set trade-money-total 0
% k+ O6 a/ X9 H# wset customer nobody% Z2 s+ E- \$ ^$ q
set credibility-all n-values people [creat-credibility]
9 b& G' r8 F+ f/ fset credibility n-values people [-1]1 x' G7 E: g: L- c. v
get-color
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3 j# t! _; q! D5 d8 O) [7 Eend# T) P- p/ d0 q3 z
$ } I2 ~$ c1 b+ R% ^
to-report creat-credibility! j6 ?2 \1 N( D. O
report n-values people [0.5]
' }( d8 h7 l Aend! g& e, O) z# a1 ~
t; Z6 v( P4 z4 B& cto setup-plots% x% }! s& K5 |/ C: A
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set xmax 30
7 ^9 q, T! ~9 ]2 }, n6 E, e# a' N( M5 G% q. q a
set ymax 1.0
* b" f% w+ [" V! F! s
. I7 i( |5 v* I4 V7 g& s: R& t- lclear-all-plots
: l6 k: k% r. S! g" E) ~
' `9 s; k+ d; n2 J K$ \2 U& Jsetup-plot14 f* ^$ U5 }/ Q0 Q4 I4 s R7 R
|0 B! m9 l, Isetup-plot23 Z" {& Z) V+ h+ o% o! f
7 v, q8 @: Z {
setup-plot3
3 A$ y# Z3 P- Q: S6 @0 Oend
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;;run time procedures, H$ e9 \$ U5 B, ]: g- m3 z
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to go. c7 }. Z& B e! U% b5 |1 n/ ?
/ U% Z- Z6 e+ _ task turtles [do-business]0 ]' p& ]- H+ p9 E
end% R9 t& N9 c2 Z1 q/ c
% N- p+ `9 p$ W, R3 Dto do-business " C8 R% U+ h ~
% k9 \9 D3 _ \5 N
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rt random 360
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+ e/ u4 E; n/ qfd 11 W: ~( U; l6 ^1 J. g) p, ]
! ~4 Q- m( B4 q/ l& ~ifelse(other turtles-here != nobody)[, w/ }1 M9 |$ W: U' B& T9 t- \
) L5 h5 L) Y3 f& Jset customer one-of other turtles-here
0 d% B9 h, v* Q# D2 k
0 L" K, i* x& x( {; \;; set [customer] of customer myself" U) v3 [- b, Y. L! ^; s7 c
: l8 l/ Q, v+ [# U. mset [trade-record-one] of self item (([who] of customer) - 1), Z; N5 K5 f- K* b. ^* Y
[trade-record-all]of self
4 q- D/ u+ I) a8 G3 S2 j6 k$ b;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
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W$ N% ^& H# ~( Q" Q" e7 i+ }set [trade-record-one] of customer item (([who] of self) - 1)
/ I6 R& e- [% a[trade-record-all]of customer" e. W2 Q- s0 \; N4 e5 o( {
- C3 T9 a: B' h1 w9 v1 Q' M3 pset [trade-record-one-len] of self length [trade-record-one] of self
% M4 r: B. o; M/ y, @- |0 P9 b v) @7 q Q
set trade-record-current( list (timer) (random money-upper-limit)), o% w+ [' h3 i0 H2 [/ r; ^! y
/ ^; Z/ u) A) } h5 x/ i
ask self [do-trust]; z& s! v& l, Q4 f0 Y e+ m( s# _6 b7 b
;;先求i对j的信任度
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if ([trust-ok] of self)
9 |) t; `- E: R4 n6 c% h+ w;;根据i对j的信任度来决定是否与j进行交易[( o% Y- o3 L( f5 y5 v
ask customer [do-trust] if ([trust-ok] of customer);;这里可能会用到myself
1 t) r; K, z Y/ f B' K
) o, S* w' S) t! Z" r[! c4 |( p! i- G8 K# S. o6 Q$ }
+ \) z9 a' T/ E
do-trade N$ z" D5 a" c$ F1 Q3 Z+ C
* P/ b" S( I% n! f& I9 K
update-credibility-ijl. U& ~. J1 @: N" l. s+ ]
0 Z% L4 c7 E2 Wupdate-credibility-list
3 d% P0 Z. b) K+ G3 y; @
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update-global-reputation-list" b6 J& z/ e, H( o3 H" [
0 C8 W. S6 t+ Jpoll-class+ W( G# a, B; R; z3 |: j% U! d: y
. t4 [$ b" U* L" y
get-color! D7 k! x& P3 O9 c& ]( Q
A9 Z# m$ k6 c3 j]]) v! W- t& @5 Y; ]9 I |& p" O
) K& V5 E* c+ `$ R, F* u;;如果所得的信任度满足条件,则进行交易9 q& I0 _( `% N/ i2 j, [
! M3 |/ Q7 B: k* V" H[
# E5 W8 Q3 r/ b v# H0 c/ H3 z9 U1 w" _* @1 v
rt random 360
+ P1 F0 b `; h8 S6 g( \- q
9 Z1 B( f7 S" ?4 nfd 1
7 y3 N, v* B7 x E) i( r
|7 n7 y$ i3 d7 {]
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end: g9 z& v* h" k
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to do-trust - \ n5 t3 t- \ i4 w' }
set trust-ok False
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let max-trade-times 05 [# ]& i, } n+ N: Y
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
4 z* p) A2 K4 m7 z$ A: ]let max-trade-money 0" c: {1 {# ]" e8 m( X; z
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]] {: K0 Z$ I. {$ `
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
: h. o$ Q; ^7 v0 _9 M* _- |7 G9 C9 u
9 u1 S2 w, T* Z$ u& W0 x1 o
get-global-proportion
/ E% v1 D Y$ ]# L6 zlet trust-value% i6 s6 D: m5 Q3 D! i
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)
- }/ G6 K; t4 e5 d) f- A. Q# _if(trust-value > trade-trust-value)) v/ }4 N4 Q; M
[set trust-ok true]
# A3 s- I8 v2 q1 kend* F8 p% d" ~8 y3 T
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to get-global-proportion7 P! d& b: P4 E+ h- w
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
, Q3 A/ [% B5 ~2 u& ^) o[set global-proportion 0]
6 j6 ?5 F/ j$ J" @' F8 c8 x[let i 0, ~5 c8 }4 C: C3 W* X5 L6 Y
let sum-money 0- Q" a7 ]) [/ v* v7 k8 s) s
while[ i < people]. s9 l% X( v& ]. K- Y( d
[
/ S. K) h: ]( F, E G4 v tif( length (item i9 f, U+ R7 _& O5 ]# M
[trade-record-all] of customer) > 3 ), N" Y, ]6 q3 g1 `
[
: a7 a `" d$ J& d5 g- fset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
% d! f) v: b6 |3 {4 G2 K8 z* n]
: t6 W v9 h1 O; _9 Y' W]
' x: G* |# }5 X9 [$ G; @/ Tlet j 03 u+ w y! P; |) _1 f- ^
let note 0
0 a2 ~, D& V* e0 D3 kwhile[ j < people]1 m9 W( N5 X( ~6 E
[( O+ @ e0 W( e3 x
if( length (item i a# _1 Y$ ?# `2 G9 C
[trade-record-all] of customer) > 3 )9 \ ]& |: }8 W; H) C
[
3 ?/ @+ z7 O/ qifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)" e* v- A$ B% c3 p5 b
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]- z! B- M3 L$ F! x5 i8 K% {2 p+ X9 c
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
) k6 S' D0 B- Q- [( l$ B]/ P' m2 l2 S' A1 ~3 x
], `0 b* W: }+ p. ]8 u: G" d6 }# {
set global-proportion note
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% t- D; Y; X0 t+ _' C lend
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to do-trade7 C0 M4 V% y6 D1 U3 P: ^
;;这个过程实际上是给双方作出评价的过程
5 U. w/ t$ {5 ~% l% p" Dset trade-record-current lput( random-float 1) trade-record-current ;;本turtle 得到的评价
, e& [* g: F/ M6 W' j3 n3 h+ gset trade-record-current lput( random-float 1) trade-record-current ;;本turtle 给出的评价
) U$ g; G( e$ w. m7 o0 Z9 D% Hset trade-record-current lput(timer) trade-record-current& j8 M% ~' L, O( r: ~# C
;;评价时间7 Q: c! N" ]4 Y* N
ask myself [7 a* l; l4 x% O- [
update-local-reputation
7 j: W5 z+ T: ^: `0 Y& ]) b3 ]set trade-record-current lput([local-reputation] of myself) trade-record-current: _( k% [8 U+ J C$ p. F* G, @9 s) W$ @
]
( f# l& v$ ^! G0 z2 j+ P/ x) \3 h( {6 `set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself$ G6 ]& d T1 K1 i- K
;;将此次交易的记录加入到trade-record-one中
: W$ d$ k' ~ z) @set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)# G1 E/ x0 [ a* a! Y0 W
let note (item 2 trade-record-current )
5 |; L$ ]' w9 l- cset trade-record-current0 R3 C# j1 h: c8 a! ?, H3 t
(replace-item 2 trade-record-current (item 3 trade-record-current)). y$ s. N* X' x3 ~
set trade-record-current6 V& ]; ^" K7 ~# L3 R: n
(replace-item 3 trade-record-current note)
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( a; I s& Q& U0 w: c, q/ Wask customer [
0 t' W1 J& K6 Z/ A, _update-local-reputation; J8 g, Z* E4 {0 u8 Q2 I, O
set trade-record-current- W2 O- \5 r/ N& m
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
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5 w; K7 D6 t" K1 }- A9 H
1 Y- o. c( K4 j9 e1 H _set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer8 W5 |: A9 u9 R1 Z) t# p( ?# A2 L; s
5 s1 I) k9 K6 o, _* O, m+ iset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)), |2 @/ z0 R1 q, i# F- }; X
;;将此次交易的记录加入到customer的trade-record-all中7 {% }2 g- e4 ~. Q/ e/ h. F
end
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to update-local-reputation
+ p4 G% o: H" V4 i* G! l: k) d2 Sset [trade-record-one-len] of myself length [trade-record-one] of myself' W& B4 R6 q4 e+ H/ j2 `
2 S, A) H2 D+ D- u4 K: I! P
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;;if [trade-record-one-len] of myself > 3
+ u' y3 K3 r1 e% ^% kupdate-neighbor-total
9 B) Q' ]% S+ V1 s( h5 g6 M" c;;更新邻居节点的数目,在此进行! x- @" x% u- G8 w+ m0 i8 i
let i 3! }+ b+ [9 A! F4 M
let sum-time 0
0 \5 v9 s( c# ~; Uwhile[i < [trade-record-one-len] of myself]
5 }( G" C4 e6 _! W3 X0 J R[
# H! ?6 C) I0 K6 r7 A- Zset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ), w2 H! l7 W4 V& D) H
set i0 J$ _6 e$ S9 m" d! P
( i + 1) T7 f# A8 n7 ~$ G9 x9 U! G
] V3 z6 ?4 W$ B& z, N
let j 3
5 j. j' f; Y8 `3 i' \ W8 F' Nlet sum-money 0
/ p6 G! ]1 D. k% Cwhile[j < [trade-record-one-len] of myself]$ |# t8 ^0 {/ N: E' }$ u
[) W9 Z$ c, j# Z5 n( u
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)8 {& v1 Q" y5 s2 y; H: h
set j
: j' s* r8 `% S. w1 _6 y9 A( j + 1)
; ]' o: L+ H' u$ k: {4 L]
% X5 X# T5 ]9 G5 X- ~/ olet k 3
) q" J! L) [* y5 S. _4 E; D" blet power 0
1 O3 |0 z/ t- I% B- ]7 N% alet local 0
( Q6 M8 ~ I4 z. f5 J; e9 r/ c. K; z# Twhile [k <[trade-record-one-len] of myself]' N9 u+ E3 c, f$ o" @3 }
[! R0 R8 {$ W4 x5 D$ B9 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)
+ T4 E/ I# e8 D; u @$ I# d5 O# G) [set k (k + 1)
' G0 m* w# v D2 x A]
6 Y+ w3 N1 T8 h0 zset [local-reputation] of myself (local)
0 j9 W: W; G8 \2 K1 t# ~end/ @! W0 B$ v3 M+ Z% J$ @
5 u8 v7 z7 o9 e* ?9 sto update-neighbor-total
6 i* i* a/ k6 k" Y* U& @7 Y1 t, d; E5 G) Z
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
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end, O# R' A/ \8 d: S( z7 n* V/ A8 p3 P
8 R2 I) C q D- H( h# gto update-credibility-ijl
# U* C0 z& V+ P6 c$ V/ p8 N `! i' Q2 A3 o' v$ R: P
;;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 |" |3 C9 D0 W. olet l 00 c ]( H s# u4 \$ f
while[ l < people ] g, Z: P0 L( O2 H( u
;;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
$ \& R/ \; G+ f6 U8 c" b7 P[) U9 ^. `. K9 B: e
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
' b( ]4 ]2 K2 a" Eif (trade-record-one-j-l-len > 3)- ]+ u) `7 o" i) h: o0 u5 [* s$ 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
) |8 M% M8 O, o% Ulet i 3
0 e3 Z. ?! V0 ~. _, _( Klet sum-time 0! _9 K( K, ]' j. z5 q3 o, L4 {
while[i < trade-record-one-len]
; r% I; J8 Z& @! a* m[: t& w& b; ]. |
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
$ q* m7 g4 B n2 [! wset i
# t F$ v- A: M8 H0 Z2 ?+ C, \( i + 1)
9 c( i8 w- f# j- Q, a]5 M0 W% y4 T4 [ |9 x4 }
let credibility-i-j-l 0
3 p2 [6 a# c/ k2 @+ w: J$ ?% x8 x;;i评价(j对jl的评价)% F/ e2 ^& L* z4 m! T$ d% W5 g
let j 3* T+ a( a" k- k6 K, h2 L5 ~
let k 4
8 K9 A$ V! G4 D' C9 W+ }0 O# lwhile[j < trade-record-one-len]
# t5 C) T! l+ q" v[
# ~& V7 o' ? S7 ~* p8 P6 f' X8 ]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. E n3 C. D/ I% P( {: e
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)! c, s- N0 c5 F- B
set j
8 a |8 w7 Z$ m5 X( j + 1)- P! y6 R7 S3 w f5 v7 N& E+ W
]% [8 ^/ Z$ \/ y! C; s0 Z+ y: _, @
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 ))# ?* ?: G. R; { I/ h. ]
8 X( V( Y" U# D; T" p, t* D( I: J
% ^! [ P5 u7 X3 e2 H) Z
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
# s/ n" I/ L5 s+ D: _6 u" P, G;;及时更新i对l的评价质量的评价) w ~; w" y$ v/ _( A( G
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
) W% n; e3 D* v( }" Kset l (l + 1)
6 R0 H, |. e/ `]
( t5 |+ M: R. I# tend
% u% A' p: T8 M2 A$ v1 R3 W6 M. d% f: ?( F: g* l- X; }* P$ O }- i9 X
to update-credibility-list
( A0 w6 \, a8 f& N, J+ U: Wlet i 0
6 K0 \/ E, G- Z/ K0 ]! Qwhile[i < people]. P. z! S, G( A/ ^6 f* y- w/ |5 B$ T
[: W5 d4 p1 t8 v6 ~8 x' I
let j 0
* o- h: _( l6 f- W- D" M wlet note 0' U+ _! E4 f8 `. |, I# O1 ?
let k 0
4 k1 V9 P. J; U, R/ ~1 v H;;计作出过评价的邻居节点的数目$ J6 F! F. ]% f" r( I9 A+ m
while[j < people]
" a" n7 ?4 k# c& o4 n _; l[
& N) m: Q1 v- p+ q9 A/ a! lif (item j( [credibility] of turtle (i + 1)) != -1)( z1 O% ^( Z! o9 h% n$ B4 g
;;判断是否给本turtle的评价质量做出过评价的节点 F7 A. }+ X" Z+ G
[set note (note + item j ([credibility]of turtle (i + 1))), q2 @+ J, X2 {: ?) f
;;*(exp (-(people - 2)))/(people - 2))]
, g0 }0 P7 A4 C3 `" i" Oset k (k + 1)8 ]4 a% b& Z, u- L$ _2 b
]
9 }3 `/ e' Q" S9 N! U$ Vset j (j + 1)
( F* x0 Z. y. `7 R]
5 P9 C4 ?3 x: z3 D+ Oset note (note *(exp (- (1 / k)))/ k)( h' _0 k- @+ S+ O( R# v
set credibility-list (replace-item i credibility-list note)
8 Q! e k; ~) X5 E0 ~1 W' X: _set i (i + 1)4 n# ~: y( P4 m4 a
]7 N) y' t: |- ?- d
end. s, g9 C6 l2 `1 a9 R& z# c
3 x" l W" b) `to update-global-reputation-list
/ H! U& @$ _, E: S% r5 b) ^/ s8 Olet j 0
, _3 O4 o L& Z# z y$ F( owhile[j < people] Q6 i/ S3 H$ w0 M+ \. X; O- P$ N
[, m- Q' a8 P; \- a, U) g" @2 m- V3 y
let new 0, ~6 `8 [3 Z: _1 {; k
;;暂存新的一个全局声誉( J3 {8 c! b: Z+ ]4 ]( i: o6 J
let i 0
3 q( Q! H7 S/ c$ f5 c7 P6 { b7 ilet sum-money 0
8 N% }' d( {& o4 z. I" clet credibility-money 0* ^6 h: e* C$ F. j( i
while [i < people]
( \. r- j$ |6 l6 m[
# ?6 A& ^$ Q# c! mset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
4 n' P* X6 H" T# b( k/ A+ qset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
4 V0 r, L) @; P/ Xset i (i + 1)- p8 b' Q% m9 }% l z3 ~8 j
]! `: l, M6 w- Q3 K/ r
let k 0
; n3 _" V! f8 p klet new1 0
- V7 O9 Q% e( H# uwhile [k < people]% x1 w. f& U A+ C
[7 L* i0 f( h, ? c# e6 I
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)8 d: `% Z i M1 s. G& i; A
set k (k + 1)
0 h8 P( `( K* M4 h6 z]
{& ]$ e' q, `5 _2 p. bset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 2 B" a( b, F# ^9 _8 h& N) J
set global-reputation-list (replace-item j global-reputation-list new)
2 K9 F: g" X" l# a* E& U1 t! Uset j (j + 1)
) V6 g& x8 d5 z8 a/ n1 F3 ^* m]% f/ `8 a0 K/ I/ A {2 l+ r
end
d( Q' L: F* h+ G
: D. n/ _4 m0 _, u8 j( k( V1 C
! x9 }. |* y; q9 w$ ]) u( U6 O" `% Y( e3 E1 l
to get-color- y1 c n; O! J
* n9 t) j2 O @0 Gset color blue
) d9 O2 z o* U) H+ ?end
: @% L+ p5 x3 c
. N+ c% U, [( Xto poll-class
5 I8 i* J" r9 `* a! }# hend
6 R- A" A! ]- w; U, q- I
5 q/ B7 ]. c8 Gto setup-plot1
2 e9 b) W1 [3 e k) ?4 N9 ]' H8 \
4 B8 n* B, `9 Q( @$ P* Yset-current-plot "Trends-of-Local-reputation") R, B8 [2 L" p/ y- o
3 n* l5 Q/ s; }set-plot-x-range 0 xmax
- u+ [9 \" s$ W: A9 @' o4 F. @
0 Y: }0 m" Q* a' mset-plot-y-range 0.0 ymax
1 N* a+ |" l6 b9 ]2 U- Rend4 W, c$ t, o7 o# t6 l0 j
8 x7 m7 q* J7 L# M' d
to setup-plot2
2 f+ U, R' b, P' I' ^0 R3 t5 Y( Q
9 ~* N [3 X' _5 J+ T' kset-current-plot "Trends-of-global-reputation"
& j% s1 F x$ e: A* c
0 M' M: s' {7 J! ?9 O6 cset-plot-x-range 0 xmax
! ^) X( P; v) E5 r4 ~2 X/ S
' B+ G6 G1 N2 i* q- c' tset-plot-y-range 0.0 ymax& x5 H: R8 {, M3 a% Y- c# Z
end! X* w6 q# \0 I6 H- e7 P5 x. h
" _- p, d3 J. G: i) ^to setup-plot3( f* g: F; [" J9 k
5 F6 O! t/ j* c# E( k! @2 gset-current-plot "Trends-of-credibility"$ [4 q Z- k. @3 t2 D: @# E
# ?) [% R( I5 M4 Z) _& G
set-plot-x-range 0 xmax
8 M* F) a6 h6 y" D* z1 B+ p; X( n ?
set-plot-y-range 0.0 ymax4 P/ J, @. a& b* p9 S; I
end
9 e+ C9 k! P2 u: d
% ^# F8 Z* D6 M4 Cto do-plots
. O' d3 t4 j, [. N! xset-current-plot "Trends-of-Local-reputation", u% f) S) K) n) J
set-current-plot-pen "Honest service"
# _, C5 a9 j" G' _0 x8 M4 Jend3 n% u3 s5 G9 {$ @, R5 S+ `
& ]9 |2 N; S. i% m
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ] |
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