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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
8 b% q, k$ k* b1 E: g0 S# Nglobals[
& @$ S- ]# w) L8 g9 rxmax
n* Q$ g" l& }6 Jymax
% @8 P! }. J2 Yglobal-reputation-list, B: [: @* w3 q1 I8 Y3 {+ J
F+ M3 n) G4 O" Y- A( g$ d
;;每一个turtle的全局声誉都存在此LIST中! p# o X" F: W" g2 J7 ]8 v3 e5 a. {. X
credibility-list
6 t5 X' {3 C8 P8 x" c" [;;每一个turtle的评价可信度
* [8 r+ Y$ A8 P, N( q$ S, @honest-service9 L0 [$ D4 |( C0 G; z& @
unhonest-service e( Y9 A2 t6 ^
oscillation
`; @4 Z! S$ ?8 Z& |6 lrand-dynamic
0 |% x: S: o! X5 ]: k' j) ^2 R) k]
1 W C1 v' a @0 e# z$ _) w3 Q( Z4 C+ q
turtles-own[
U+ x/ X7 e+ l, _: ctrade-record-all
" E8 n/ C: z; X @4 q;;a list of lists,由trade-record-one组成
4 d( \: V8 S7 t+ Z7 _ J5 Qtrade-record-one) T/ [1 S/ D$ s; l- c% t- j- M
;;list,trade-record-all 中的一个list,作为暂存用,记录两个turtles的交易记录2 l. g4 L# W; R
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;;[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]]
0 p$ c7 t# d. U; W) l+ M! ^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]
6 \2 _5 w. o/ A0 J/ O6 e6 wcredibility-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
& J+ }9 o2 @' o1 Q9 r0 wneighbor-total
" t* z& p R- z;;记录该turtle的邻居节点的数目* s( r! u9 e! p) j+ S5 k% V n3 d
trade-time
. f+ l3 {4 H! I1 f;;当前发生交易的turtle的交易时间* j- ^& A$ X5 s$ s4 M2 J
appraise-give. W# ~0 V2 |5 u9 O2 h' ]8 T4 B
;;当前发生交易时给出的评价 C3 C, z- Q7 q4 @
appraise-receive
9 m6 s; c& g8 O4 k;;当前发生交易时收到的评价3 I& }: f" B- A: _, @9 _
appraise-time
, G+ k% ~' b; q7 {. b6 `;;当前发生交易时的评价时间4 a7 g# s" w' Z( _* R
local-reputation-now;;此次交易后相对于对方turtle的局部声誉) p2 |' O1 O; u$ L5 D! W
trade-times-total" S7 k/ m" z: }0 k6 N% q
;;与当前turtle的交易总次数
5 K1 m7 Q( w& H* m4 Ltrade-money-total
) C2 v q1 E3 q8 j' `' d( [;;与当前turtle的交易总金额
5 M5 P& G. @/ J% m+ X# Tlocal-reputation
. }; x- Q* |) p( s, c* I7 dglobal-reputation
$ ?$ ~2 [* F. L3 g, mcredibility
$ Q0 K, o, K4 c4 N1 G;;评价可信度,每次交易后都需要更新
0 L, D# s& X _( ycredibility-all
( |. M# ] v2 ~5 M& _ `9 D;;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
( r( E5 q1 \* |9 m) Z3 Q+ U
# C S _# _ W5 o7 \- w;;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# p. f6 m1 S C" _. ^8 G
credibility-one
& M2 m0 p: J' U( v;;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& Q* M; x# F8 D( e+ F
global-proportion
9 U0 R& k/ q" U) Fcustomer; A5 n0 T/ D$ f5 e3 j
customer-no( u1 X2 ^# w8 O4 @6 W, w% T
trust-ok
5 M1 z# k4 C' c( }* t" ptrade-record-one-len;;trade-record-one的长度
6 I- W. m( D: }% \]. ~3 z5 G! d% ^3 F+ U
/ }5 }4 j$ o2 V;;setup procedure
q9 ]( q' o& O) A; ~% N. y5 r1 d. E3 K5 c" K6 }3 ~( n% W3 f- B
to setup9 A1 u6 n- ^" J4 ^$ v+ G
6 Q/ O) ]+ p8 [6 oca
, U, A5 @0 g' W
0 h) s! e$ i+ ~initialize-settings" Z: P7 z5 H+ ]7 e2 p
, q! m/ |- }1 k' J' X5 a: jcrt people [setup-turtles]4 P' Y8 M! I0 m0 e8 m; Y2 }! p
# B+ O; C6 ^) V# C, K l
reset-timer
, w6 S& i+ R+ m! F i2 ]
* Z: _7 E& q- p w1 }+ Qpoll-class& T* I [0 ?/ f& Y7 q6 _+ J
: m4 w9 }! r0 ~' X: W. s
setup-plots
, @ E z: t P% t: Z8 ?$ g" h' R- s$ r8 l: m1 N
do-plots/ E) n% X, ~) ~0 Z9 S2 h' F' c
end3 Y9 N$ ?6 R8 K4 Q# h! |% f# b
5 L @. R0 h1 {9 U! ~# jto initialize-settings
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set global-reputation-list []& P/ {, p Q3 H4 X! U/ V
/ r r; ^6 C+ d a' H
set credibility-list n-values people [0.5]& u& `) x* Q1 t# u F, e
* @. o. ~+ U1 G, j5 Wset honest-service 0
2 b! E4 V4 |1 Y8 ^
5 y8 |- U3 L& F2 e9 iset unhonest-service 0; d6 W" |3 Q1 h/ B! b
+ C% S( p4 {0 r
set oscillation 0( v' T6 f& B$ t7 [4 `
; @7 ~- x, Y4 u+ |set rand-dynamic 0
! x' S8 B( L" z3 u' U( ]& [" uend
( O% e- t5 X' q& D: f! ]# R* k1 w, K. \$ ?
to setup-turtles % j7 a& _5 w k) m" {0 i
set shape "person"" j3 S/ z, K( H# u- f: I/ H
setxy random-xcor random-ycor' J% N' u0 Q4 f
set trade-record-one []) R+ I4 U6 S7 f! R
, h$ F' |4 J8 u2 T+ r% O @" J
set trade-record-all n-values people [(list (? + 1) 0 0)] , H0 }* h9 n& [5 u6 _ M
8 P0 V! |7 } s1 g* aset trade-record-current []
1 r, `3 L1 X [( _( r1 ] w7 oset credibility-receive []
# m8 q' T' H$ bset local-reputation 0.5
0 }' i0 d5 V9 b9 L8 E1 S6 Uset neighbor-total 0
; r) @! i8 a% ^7 f# B* S; [set trade-times-total 07 z$ ^% W, e4 F
set trade-money-total 09 |( x6 L5 w5 J2 ?3 I! b
set customer nobody% X% q6 G* J/ e5 u: c9 }
set credibility-all n-values people [creat-credibility]
8 i9 Y% b4 U0 s' {( t& Zset credibility n-values people [-1] ^, E% o6 q. R0 T2 K1 w; z
get-color6 C7 B9 @( f# R1 f# P
@# E/ b# d7 U/ aend. U& L3 M5 o: t: W
8 P; S4 E( K' Q
to-report creat-credibility
8 O' q4 v+ O4 k: nreport n-values people [0.5]
& l8 X$ F' N1 G" l( A Dend' ?* B% a& T4 ]9 ]# G( [. n/ P
% F2 }4 Z" z1 u
to setup-plots
* k8 R- z: z3 [3 u' c5 R. m3 {6 m( R6 Y) r
set xmax 30# Z, g- s0 ~4 f
9 s6 g% E: t3 |5 @9 S; O# H) lset ymax 1.0. d5 W/ \, o% O( W2 L" B+ m
2 E: j+ n6 u/ F2 U0 Hclear-all-plots
4 o9 p& S% A5 ^2 G' C1 M: ~ y! b& r, a! g* Z
setup-plot1+ Q. P4 j+ R- _% o; [
6 l6 n+ R% Q" G+ m4 gsetup-plot2& X& \% X" t: H, H
, }5 _$ r7 S! Y& P, x
setup-plot3
, I5 U, U! T) Iend; K& L$ U7 t2 J9 _; N ^
e. V+ Y) ^2 t7 ~1 w$ r. P
;;run time procedures
' Z4 l& {# ]! c/ E# x. b5 J5 o$ ?3 E# x5 I- C8 x
to go
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ask turtles [do-business]9 i2 ~# p2 u: G# r$ N
end) k, h8 u! _& `$ f( K6 ]
U9 F, O2 B6 Rto do-business
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0 H0 x% w q) E6 p8 i {( g1 V
rt random 3606 z2 D! o2 k, ?) T0 E
& l2 F; R* f7 Bfd 1
, o; X1 E5 p! [/ M
* S. J7 J+ d, q6 N- f" n( Bifelse(other turtles-here != nobody)[* x `* {' e& F: s7 c2 u
* _& E" L$ T# v/ R) t K- j% y
set customer one-of other turtles-here
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;; set [customer] of customer myself
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set [trade-record-one] of self item (([who] of customer) - 1)! b1 A) z' A& ^5 b, F8 y
[trade-record-all]of self0 H; {: x% x8 p: f/ j
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
. H' f' [" F% D; x/ `8 U! Z2 v/ T/ ^. y) k s/ V8 {
set [trade-record-one] of customer item (([who] of self) - 1). S( j1 s& c5 ~' B/ H5 J( `. _
[trade-record-all]of customer
+ `1 J2 F# q4 _! e7 _/ Z# R# Z, ]" N1 _' G, {" o8 Y+ P' ^
set [trade-record-one-len] of self length [trade-record-one] of self2 e; ^ d1 g( e. ?
$ i! y- b- Z+ u
set trade-record-current( list (timer) (random money-upper-limit))4 l. @) S; N- D* Z
+ }2 q5 ~5 o: s8 W- f) Lask self [do-trust]# ~; H D% g* h
;;先求i对j的信任度: T9 U; v3 m$ {4 ~: p. d2 L
% U( f4 m( _, ^; r) g! Kif ([trust-ok] of self)- m$ \. N7 T8 d- j
;;根据i对j的信任度来决定是否与j进行交易[
1 t4 x% q3 C7 p: Mask customer [do-trust] if ([trust-ok] of customer);;这里可能会用到myself
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+ O, ]( n1 w4 T7 k2 e. }+ a[
/ h/ l4 s& L5 E; Q2 V
( d: N' }4 w( \% Odo-trade; _$ s" i8 O' v4 y: D) B9 Y' y
+ O4 S& O& ?. I, p) {4 ]9 n4 nupdate-credibility-ijl2 {8 U4 L0 Z2 A- y. O' {1 c
, J* W' @* }( t, a$ ?, Z: V" \# pupdate-credibility-list- B& v/ g7 A% W7 Z0 F1 p
0 Q( x9 P) d: n7 n- o0 W7 G. R3 X* m
D0 {: |4 Q0 wupdate-global-reputation-list
$ ]# i6 A: _9 d. l3 }" i8 j+ C h5 e0 w2 m% L- g0 I& y) [
poll-class
. P/ V; T0 x) y& k2 j- N
' i9 O) v7 ~6 |' y8 |* u+ E4 Dget-color S" C8 R. C5 n' z
) `1 @! L$ S* ]" y: z]]) _- T/ D& m! l9 O, k1 U) P6 d1 E# b* z
; @& `3 y. p2 b4 F4 };;如果所得的信任度满足条件,则进行交易
1 f9 \) l5 y3 j6 n. r. q2 r, z* |! C/ h0 @" q4 V
[3 S& N' D( U1 @+ ]3 Y0 P j
& j: d6 c: J0 |8 k- jrt random 360
8 ^/ b9 P: l! q7 K r1 t3 R' I" b2 J9 e2 c I3 x" `
fd 1
: ?5 Q H) M/ {% j
+ A4 f% H; I# _9 q& H% R]' ~' F( C" s! O4 {7 R' L. O% x
4 n( C( l8 ]3 i% v: Z t) w2 u# Lend7 U( {- o: u2 @# k
5 V" Z3 h7 u9 K" [1 \$ nto do-trust
" G9 F7 W {/ W3 ~- \% Sset trust-ok False
1 Z, j. G. x) s& K {& v& X c; [, k3 |7 T5 K/ Z' c
! V% S/ F* L* w! i; P4 @; c$ x* jlet max-trade-times 0
+ ]2 n& y$ d: ?foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
5 ]0 Z! ^" w' K) g7 q$ vlet max-trade-money 00 n) G! e1 V, n- T& [
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
. Y/ G; C7 H3 W/ i) t! glet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
) c7 y1 {$ i1 j
4 [" l: p, ~! b6 W5 a8 F+ J* W4 v1 ^ N3 n! S- F
get-global-proportion
3 z: N* Z2 y" W* I# n& @) n3 klet trust-value" Y* g' O- k6 q' k4 M
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)9 K/ j( f6 r$ Q% O3 d5 p: ?" a
if(trust-value > trade-trust-value)+ ?1 U, J* u9 ^
[set trust-ok true]
0 t5 r7 y- R7 R- r5 T! j8 Gend& A7 X8 i/ s& j6 V
1 |- a: }# O# o3 r
to get-global-proportion
# q; H+ _4 ]' ?/ ?2 C* zifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
2 o |! ~# F, {1 Y[set global-proportion 0]
/ l! n8 g# f G" W" k[let i 09 b( v5 r4 {/ d% s% C
let sum-money 0 D; Y3 @" I. X; w3 ?7 J
while[ i < people]
1 U* W. y" R3 R @& T2 o4 a[; j4 f2 | o& P- z
if( length (item i
3 k2 j4 Y- ~& d! s[trade-record-all] of customer) > 3 )
$ O4 i' P6 a9 c6 }* N[9 t0 r( q& K0 c$ G" Q
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))/ o" U* c6 B H! m2 l# {3 c b
]) c& o' {6 O I
]- a* o, Y3 b* E/ {; D# L
let j 0
; W7 q7 c8 e% L% ]' n! B+ n- rlet note 07 h& r, U3 o. h! f: z
while[ j < people]
* g" J9 m" U0 ?# p; L[
0 K/ Y' s6 |; p" N. F+ Yif( length (item i8 R' `. m, ?. D; x Z
[trade-record-all] of customer) > 3 )) F6 Y% l' U2 _5 S
[
1 S9 x0 {+ a- Q3 m8 Eifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
7 T( \, x+ s. a[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]/ m0 x& j1 K5 J1 k* ]. k& ?
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
6 b0 K# s- Z! A1 ^) r \$ h R]
+ m- ?9 O% F9 W] v- A$ `2 M% x5 \4 J" _% ]
set global-proportion note8 z3 A! |$ ]) J0 e+ b% j7 L
]
, p1 p* V% h; oend
, q% u) W, p. [+ O3 {5 m0 @% h( ~% Z7 e# x
to do-trade
3 ^5 \4 M+ r- r" l# U;;这个过程实际上是给双方作出评价的过程
~# e2 C% @/ J1 [set trade-record-current lput( random-float 1) trade-record-current ;;本turtle 得到的评价; F/ x6 \; q3 W% y
set trade-record-current lput( random-float 1) trade-record-current ;;本turtle 给出的评价
+ q! R! ?) R* u2 a [) t: D+ ^set trade-record-current lput(timer) trade-record-current
7 q/ A0 m: w+ n2 m, u; u! ?/ e/ p;;评价时间: e3 u8 u1 L- d/ I. A
ask myself [
5 x% D) n: A4 Y9 S' @ Nupdate-local-reputation& ]1 t& d2 [! v- g3 S0 A" ~3 J0 p
set trade-record-current lput([local-reputation] of myself) trade-record-current
# [3 H3 L7 W) @( w]
7 z, w; S# Y9 Sset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself, e2 w% ]/ q9 W+ L% j; r% Y
;;将此次交易的记录加入到trade-record-one中( Z/ w/ _4 f6 {
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
8 C) v0 E6 a1 H, M. ? Elet note (item 2 trade-record-current )
: Y w4 B+ g" Z: {# ]/ C$ Z, Q& Pset trade-record-current6 {% u& y9 g/ O3 l# ]6 d/ W
(replace-item 2 trade-record-current (item 3 trade-record-current))
5 D5 ~( o( J+ f/ I" U: Zset trade-record-current
5 X* K7 q- Q6 v! I6 `; X) n(replace-item 3 trade-record-current note)
: d9 E) p, T# t. ^$ G
% ?) W" \( q; y: B& X0 w: c0 X* Z: k. U0 h) c. N- Z0 K+ @# s2 O; D0 H( c
ask customer [6 u5 W/ l3 v+ N9 R( [. }3 I* ]
update-local-reputation' Q- f8 `. T# r5 S2 r. M* n
set trade-record-current
: Y7 P; F6 [. T' J- ?(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
( G) k% P! Z- B: i1 }' Y]
3 W W5 i& N( I' g: F; a2 |7 p) l! M( z
9 s4 ?5 p4 S. P8 e
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
: x' e' Z* v/ O& B% O' p9 |* d5 P9 m, G9 K
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
K) H6 r6 a1 ^: V) h;;将此次交易的记录加入到customer的trade-record-all中& g% C9 [8 Y6 q' @* s. y
end6 C4 e& {9 {3 ]. D% |* p
( Q+ I% \ \8 V' e
to update-local-reputation
% ?6 d% V* i( V8 U+ h+ K s4 Vset [trade-record-one-len] of myself length [trade-record-one] of myself
9 x5 i: Q% c8 h" K
3 ?6 F l" Y$ N4 ~
" [! n# n A4 K1 k* T8 b( Z;;if [trade-record-one-len] of myself > 3
/ T5 k" f, u: ]3 z* B- `2 _update-neighbor-total3 v2 J$ N9 u1 J% D0 @
;;更新邻居节点的数目,在此进行! H5 _& i8 w1 i) n/ D
let i 37 `5 b- y# V( l; ?) B7 S
let sum-time 0
( E; J" v" _/ w) lwhile[i < [trade-record-one-len] of myself]* g* g& z6 O0 D. q& ^- n
[
5 A, G0 y; w* }+ i5 fset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )) Y. {2 a: |# T7 O# p3 N
set i
$ z# `2 K7 b: s7 |: E7 H- j, q( i + 1)
1 |0 j! I* x/ R \6 z8 \]1 @8 I( ^, N* V: [5 I
let j 3
) W2 j2 u' M7 s! Ylet sum-money 0 Q9 e) ~. F* z- e9 k
while[j < [trade-record-one-len] of myself]
; G* ~2 S" u7 l2 ~ H# |( i[
^$ y1 `0 V& ]( o# mset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)% [' M. L% I( J8 r; l# }! i% I+ c( ^
set j" i9 j, C3 [: r0 l1 l: A9 @
( j + 1)
9 F. d! O& F, k]
@) n' Q3 U$ ^2 F$ nlet k 3
1 c7 ?8 i% l J) ^+ Mlet power 0) \# b% W, I) E
let local 0
1 i; R; j' s% n$ ewhile [k <[trade-record-one-len] of myself]
' t9 t T( n. x3 K4 N" S5 D& y; F[' \+ h0 A- t$ I6 d a% D) L' q0 J
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) 1 Z% F0 H$ v) o6 X
set k (k + 1)9 g& K2 P, R- ^" t9 E
]
, D7 b$ U( E! I& o c4 ]set [local-reputation] of myself (local)
4 t7 b; D' V# B. S5 aend9 U0 f& [* v- Z. H( Z5 B
/ \& @, G4 b2 H, d' s8 S
to update-neighbor-total1 d* e& {) _: E, Q( {8 C
$ a/ S! Y) b0 qif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
1 P, e$ }% Z/ \1 N" R/ H/ l7 n" ~$ M+ R) o/ p; P- S
9 z, {' s1 ~. `. ?) {end
1 l; F7 P+ v/ s1 v! a% Z# F0 T( G; [. ^2 T
to update-credibility-ijl 9 `4 h$ [( U- b6 t" ^$ x0 a( A; V4 H. X
* l2 }' m: P, a" J/ x6 k
;;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。
1 F+ {' e- K; E: B( Klet l 0
' A8 Y6 H* g) i. T; K Y# \3 ]while[ l < people ]
) E8 a0 x+ _' L;;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
6 i& q( [8 W2 J0 R3 z& R6 \[+ Y, X- \% ~8 Y1 W5 ~5 P
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)8 A; F9 U" L+ h2 Z
if (trade-record-one-j-l-len > 3)
" A# n @2 U3 }9 s: M[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
/ b4 b8 U# [0 O& d) J9 Q0 Glet i 3
* U& p6 Q' f" ^5 ilet sum-time 0
1 ?* K0 E6 }% b1 `6 F" R; Ywhile[i < trade-record-one-len]# C* h9 i, r! k, H
[: ]/ F; J# u5 j: g
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
" H. q0 g4 a' iset i2 K; g$ M3 b, n+ d; V
( i + 1)1 X/ u# [8 z0 R5 l7 H9 L* M1 ^
]8 s! |( B8 D$ S2 U2 g4 y( ?. i
let credibility-i-j-l 0
0 s( e" d* `" p- s4 g0 Y' Y;;i评价(j对jl的评价)
& A; p+ [4 \( llet j 3
, g5 r- X9 B: i& blet k 4+ C# g- L, s) B# ~! [
while[j < trade-record-one-len]
0 p- H* h# d, W# e6 L1 @ q1 B% ~[+ J4 Y) Z+ \% F T) x1 q% \$ v/ A
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) B1 C8 E* \" q( R% D; V
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)1 C1 R, Y: Q! H; [$ z( _# @
set j& N+ S; ?5 i$ G8 v
( j + 1)
% E: o( @2 g3 }, @! _, p' N]
' D2 |' M% ]5 U" vset [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 ))" P* x- F$ ~. Q( C1 i: ]
$ H6 t; W( Z' ~2 D9 T( Y# W0 Q
: A' ]/ u3 c" ]/ z) [
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
0 }3 ~0 s% j8 y/ S; b2 Y;;及时更新i对l的评价质量的评价
5 _) K9 r" T! d3 kset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]" E5 R3 @5 G- A0 n# J
set l (l + 1)
4 @1 \: E2 x5 ~0 V4 |, f+ |, k]
& L7 |( f, P5 f" Rend- x& [: c4 I9 l+ m! j
. b2 C) w8 B' a( W8 k- a1 ^
to update-credibility-list
( g' T' T0 g$ Tlet i 0
: D: | C# ~! K# p6 @- ]while[i < people]
* Y0 x! D, v# B% k[$ k. X3 Q% `/ ?8 n/ m# o
let j 09 L% v& Z) O9 n& _& N* |
let note 0
' A" ~4 k* }5 A' B* q: Nlet k 0" n! A; O. G: c3 R' W
;;计作出过评价的邻居节点的数目1 g) E/ C7 n5 D4 A# p$ ?
while[j < people]
: R; e5 K- T* f6 M& b[' a8 G5 W3 ]- e0 M1 G5 g
if (item j( [credibility] of turtle (i + 1)) != -1)
' z; }7 n# {: c; h) C$ D$ ~;;判断是否给本turtle的评价质量做出过评价的节点
9 e% p w' ^8 e[set note (note + item j ([credibility]of turtle (i + 1)))$ j$ U; P/ p w1 v
;;*(exp (-(people - 2)))/(people - 2))]" M% O6 d- k5 G" {' u
set k (k + 1); @2 J; e2 d5 A- d; S
]
4 U3 b4 e" C/ @8 u2 fset j (j + 1)2 s* {: [/ N) \) c
]8 q: H; z# n$ C( O7 s2 w5 ?7 |
set note (note *(exp (- (1 / k)))/ k)( W3 ^. ^8 W: l1 |% k" z
set credibility-list (replace-item i credibility-list note)
6 {& Q% g$ e2 R: A- lset i (i + 1)7 y: }, I( q3 G" {2 O
]
# j) e" ]) J6 h u1 @9 zend
6 @! _! G: g+ _6 J5 x1 s" `2 X: ]% x" Y. R9 ~
to update-global-reputation-list; G# K9 W! s' M* P' c2 V
let j 0
0 M5 _6 h* }. O' zwhile[j < people]
3 E3 [6 v0 y. `8 i! U) M: l. X[
5 F: Y5 x$ b, h0 o. llet new 0
) \( T% _5 \8 L, d, y;;暂存新的一个全局声誉
/ f5 ^: d' N$ A& U- R6 y2 Flet i 0# ]1 f$ A- N1 M
let sum-money 0
0 x5 G1 Q4 }: q/ I4 ]let credibility-money 0
8 }, ]/ Q3 e/ N; awhile [i < people]
. |1 ^% e9 ]1 z. V0 b$ l5 c[
9 G* _* M$ q$ R& eset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))* N2 s2 N, N& u
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
3 D3 e! ]* y/ U: K L4 P) X9 vset i (i + 1)6 T7 P4 w8 q* k4 @- j" v: p
]# V) L7 q% h, ^3 M! ~9 w: A: g
let k 0
4 @: o9 [# y: f: Ilet new1 0
8 Z1 i R y$ r. o3 t) s' xwhile [k < people]+ U' z4 l/ m" J' K3 n/ `3 \
[
8 U$ @+ J% S3 Q4 `0 ^0 q _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)1 H& e5 B0 x( b. ~1 X' g$ Q; T
set k (k + 1)" B8 A2 B s8 _8 Y. ~
]" i9 v( W5 n1 N
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
3 ^# a" Q. N: E: y+ }# O1 Xset global-reputation-list (replace-item j global-reputation-list new)
4 W. k* ~' Y! z* u8 m% K- Cset j (j + 1)
; w% U2 s1 ~6 O B2 g) M% a* H% h# A]% F) n, m6 W# f- \2 ?8 b
end
! F6 s0 e! u9 s; F. f( X
/ Y2 s; W4 \4 w6 d8 i- T, A- _6 i$ l4 b' T
8 {, {3 x% h0 ?6 o+ wto get-color
( v! l5 C) b% @, ^# S$ C2 k1 q' S0 K9 T9 |6 ^: ?* b
set color blue
4 N5 {! \+ O& ^" Y. Zend
( \! k& N7 i- _' k( P6 W# Y4 W5 y7 L# F y! J
to poll-class
' Z3 y4 \( w( L! Uend
) L; @' m7 n0 S5 ~' R
& W: e" ~2 U Nto setup-plot18 j" P* R- O. I! j6 c
/ N% s S3 K8 V. Jset-current-plot "Trends-of-Local-reputation"
: c# ?9 Z0 a, m4 @5 g# i
- x& d( A& W5 Z& I6 {4 qset-plot-x-range 0 xmax
# c+ `5 v) v. y: G3 D0 V a$ M" |5 r: w
set-plot-y-range 0.0 ymax
3 G! `% q( x: Gend+ ^ _( K \9 l. q
a. l0 Z4 ]( E) ^$ N" U
to setup-plot24 C+ l' W4 G* l* a4 r& @
* G8 A# w0 ?! ~( q' s# D
set-current-plot "Trends-of-global-reputation"
0 N! \* T; O! ?8 {$ v: c9 {* l) @4 Z) ~/ I! C6 Q
set-plot-x-range 0 xmax, g: ?2 `, f% O# E, _2 Z
Y( F% _- j# |0 y, Y" Gset-plot-y-range 0.0 ymax# J: E$ p9 ^; J8 B& r
end: |; @7 @5 l) q3 B0 w7 V9 r
/ Q$ h/ |9 [' d2 |$ _to setup-plot3& h4 i7 E A7 a) ^
9 h2 w' H& C: g+ l5 H7 k+ Z6 rset-current-plot "Trends-of-credibility"# M' U5 `0 e% M
! {( f( V& I1 ~2 z5 e( M9 ^set-plot-x-range 0 xmax# O$ w, D* ] G& H& i
$ Z% m% b8 ^* |) Z$ mset-plot-y-range 0.0 ymax6 b4 J2 j2 y! X& j E
end
3 A) m& m2 W) S6 N3 l/ c
4 [; c9 i6 M) [2 G) Nto do-plots6 C1 i7 \, G0 v# L
set-current-plot "Trends-of-Local-reputation"
6 x$ t: e7 ?! R8 W7 E9 s8 Kset-current-plot-pen "Honest service"8 k$ j! J v1 }5 R
end
! J$ k: e; A5 h% r
1 i2 k8 I Z. `$ e1 @, l, g) ][ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ] |
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