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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' j0 }; ~* { z# O4 w( q8 D$ i. V
globals[- J2 l+ t8 s9 K0 M
xmax p) P; b0 Z3 z, F( \3 O; ~
ymax2 y+ X7 X# W; B! I4 u0 T
global-reputation-list
+ A" x; u& F& ? F7 t/ N: D; o8 I' j, e
;;每一个turtle的全局声誉都存在此LIST中
0 r* @: ^5 S! Ucredibility-list- O* H+ a1 G1 K. e2 G0 U
;;每一个turtle的评价可信度* ~" Y x/ y& I3 p
honest-service$ u' V9 v. G9 n D
unhonest-service. q$ Q; [, z& ?% E9 N1 Q
oscillation
, D$ f5 R! t4 A* @1 Xrand-dynamic8 N* ]' V S* e' C
]% f8 \9 J+ s1 c
4 }% [9 x) k" f- X7 g# eturtles-own[2 I: {: E; ?2 x
trade-record-all% R H% Q8 u4 k: `
;;a list of lists,由trade-record-one组成
_" T4 t+ q& S5 ]trade-record-one
: D: Y3 P" i2 W/ k2 Z# n3 K' g: @2 r& c;;list,trade-record-all 中的一个list,作为暂存用,记录两个turtles的交易记录0 V( Y: h: E( }7 B9 Q' O9 b5 z
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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]]; w h0 m! G- g* M4 d$ z: U
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]: W* _; b- `- U; L
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) ~2 H. n+ B/ S2 k9 V) t) S0 S& a7 i
neighbor-total$ T( U w/ [. N I2 {
;;记录该turtle的邻居节点的数目
# m) J, b; ?9 R1 S. s8 D7 _ Q3 Itrade-time
- n7 c3 ?6 g4 z! J3 B" m;;当前发生交易的turtle的交易时间3 D6 c1 b- S# V- D/ t4 S: q5 i
appraise-give1 q+ @0 q( G+ u: T
;;当前发生交易时给出的评价+ k0 J2 D0 t( s- x- N0 t) {1 X3 F, {
appraise-receive n, e1 o3 T, _; I I" E" n' y
;;当前发生交易时收到的评价8 i5 f7 W% K/ i# B6 R
appraise-time6 ^" y9 d; [7 S, {: E
;;当前发生交易时的评价时间
) T' _5 v1 s, Y3 V, p, G, o. k' Alocal-reputation-now;;此次交易后相对于对方turtle的局部声誉+ q. Z! _3 p4 Z
trade-times-total
. `/ E6 ^/ J3 c# S: }6 `;;与当前turtle的交易总次数+ i- d1 c) u% t* V6 k3 ]5 N( ^
trade-money-total
, H4 L3 U/ j5 g( k8 p;;与当前turtle的交易总金额2 m: m# ]9 S/ @7 a
local-reputation: j$ s5 _ f* x5 M0 a0 z9 C
global-reputation
$ u6 f7 P, a7 ^) ?4 z- xcredibility# H) o' `) \3 L/ d0 x* ?
;;评价可信度,每次交易后都需要更新) l1 l% s% X6 l. L) k
credibility-all) ?' O) K% b& j% L% A0 x( a
;;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
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/ B" i4 l7 e3 @* w6 [+ G;;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
& A. F! |; ?; ^5 ycredibility-one
{# r' ^' T4 U9 P4 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 B# B9 N3 G4 F5 T* @7 s
global-proportion
( W1 ^& J1 ~4 w+ R1 t6 c- dcustomer% `4 h) Y' P0 j; ` }
customer-no
5 E1 ~/ a# r3 w# etrust-ok
3 u5 Q3 }) O5 Z. d1 H3 T/ Mtrade-record-one-len;;trade-record-one的长度$ k3 b) n: a. F
]4 }4 i* V" b1 D9 O* ^: J% I% j* U8 f! s
+ p7 I/ k" [ ^;;setup procedure
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to setup& f- v- l. K) ^7 Q
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ca* ~. R" Z( [% F# b
* w4 ~6 X# c" [6 Qinitialize-settings# ]$ P+ L2 I+ r6 R. G
$ v/ Z* m! h2 p! ncrt people [setup-turtles]. Z: ~4 [: Q v$ }7 G
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reset-timer- B/ G. p. F$ I, R2 Y, L0 ~
3 A5 |( [; o+ ^# R! j* P0 _
poll-class
8 m2 z' J7 \6 D5 H& @. S) V
3 D6 m- E7 J V& xsetup-plots! g8 b+ _+ X0 U& k3 }& ]
5 a" Q* u, d+ T: n4 w9 n" \
do-plots
# g# Q; N9 s& g$ A- Eend0 l! b. L! z% K% A0 Q `
# d5 B/ B n' V! \3 vto initialize-settings
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set global-reputation-list []. r2 H9 M5 `) R5 a* M
! h. z" Y9 u8 c, f5 }, D. v% y
set credibility-list n-values people [0.5]/ ^- B1 [5 H- B3 A, @+ C6 s3 _
% n3 x9 d7 ]" e; Wset honest-service 08 F$ P m* ~' }* I
& K4 ^4 A2 H- D8 tset unhonest-service 0- w; q3 R; v" _" g. D( F# T( r
M9 x2 l; w/ G7 S/ m& W
set oscillation 0 [! M# \- h0 S7 B5 x' D/ h
( ?) G) v! p+ d7 h! y% R$ kset rand-dynamic 0
' d3 W; T4 p$ e9 Y: Oend
8 V9 o7 S: V) J! I# _8 N* ] ~+ ?9 a' `# Y& p
to setup-turtles
( J/ A; f6 R2 G# d# ^) J; }9 pset shape "person"
( h4 M) i: d* R# f: D& [8 Ssetxy random-xcor random-ycor
& ^ t6 o4 B2 a% t' Qset trade-record-one []
0 x! g7 E/ [! ]" H$ w
. h" k @) J; s2 Oset trade-record-all n-values people [(list (? + 1) 0 0)] 6 F) z, c, b9 _; M, C
# E7 ~" l, Z- p% uset trade-record-current []. y6 @* O0 _) R' [2 S6 u
set credibility-receive []" i5 z# a8 I8 j. P5 C- J
set local-reputation 0.5
0 s) K. \. w! E# H* oset neighbor-total 0' Q R9 O/ ?. R' Z! u6 D
set trade-times-total 0
$ }0 {# L" a5 ^4 a) r/ Oset trade-money-total 0( n5 x; q8 O1 i2 P h+ _7 w
set customer nobody
! }& Q( \* _' Q: Wset credibility-all n-values people [creat-credibility]! I1 S; W, M1 p0 S
set credibility n-values people [-1]
8 w) M% k, ^! B9 o9 Fget-color
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, G5 R; z5 z: ^9 J3 Z/ m% e0 l1 Cend
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to-report creat-credibility- A, {, O5 O3 f( Z! [4 N
report n-values people [0.5]
7 U) M8 F% N s. H* V2 Nend
, B' B+ x* |5 U5 i% k+ ~; x* R% B0 E
to setup-plots) c- |$ E' n. h0 k5 k, N$ L
- U" a0 h* `: @5 d7 Kset xmax 30
" x4 Y# Z( Q- T) I* E6 i$ m; r# c8 i p' ~* d9 c. v2 W
set ymax 1.07 r' @9 a( {% K. b: L# d
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clear-all-plots* n8 N4 B7 J3 j) Y1 t2 l
7 q7 d1 G/ m6 c, `, _setup-plot13 m* n' |0 p3 G( n `
1 d, s8 _* N* A7 Z) m# d
setup-plot2: N4 o9 |- r" F, ]
6 Z* B' T# y* fsetup-plot38 f5 b2 b8 J4 U
end
! ], d0 l) K7 E
% e4 y3 O% M$ z;;run time procedures0 e% Y8 @4 y% A% }; o7 Q& t
# {* v- s- P& A1 B; S c5 ?
to go
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+ y/ y* }8 S$ [" g# \, s1 mask turtles [do-business]8 P7 a$ r' m* o# F' @9 A
end
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to do-business ( Y/ N- Z4 r- ~ W% h& o9 [% {
! ]2 M+ W6 }5 ]# w4 ^9 E) \3 h7 {6 x% y! @! W
rt random 360
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' m! a% w9 r( \0 j: M" e; cfd 1" x5 ~( l) |1 W& O6 J
% E8 m5 B. h) {, Q5 l! Mifelse(other turtles-here != nobody)[! Y0 f& j4 c+ H& O: I( F; v
" }3 @9 j$ T" tset customer one-of other turtles-here
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;; set [customer] of customer myself, h H( I I/ K. [/ ^: D
; ?5 m3 ?! c8 ]) Bset [trade-record-one] of self item (([who] of customer) - 1)/ p/ h0 F+ e0 a$ H
[trade-record-all]of self
7 E; d2 L' E( L/ s$ a! D4 j4 T;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
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set [trade-record-one] of customer item (([who] of self) - 1)# N# |* T- U8 f) o
[trade-record-all]of customer5 ?- @8 _! N. z3 z- T$ I. V
) `% s% m7 ], O @* f/ oset [trade-record-one-len] of self length [trade-record-one] of self
+ V! Y# J& w6 r! x$ X" U7 l. r2 i! b" e5 t% T# h% t
set trade-record-current( list (timer) (random money-upper-limit))+ P8 T5 ?. {7 p! I
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ask self [do-trust]/ L0 Q9 M/ P% w; _$ Y* p! \) a
;;先求i对j的信任度6 L9 g2 m; }: r2 H; g6 x
# X! J# c+ H* s% e, V: |, Sif ([trust-ok] of self)
, m7 o$ h; I; f' o, }3 `) Q;;根据i对j的信任度来决定是否与j进行交易[
$ K- v' C. Z9 l) B0 p8 b$ Z: Fask customer [do-trust] if ([trust-ok] of customer);;这里可能会用到myself
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2 v0 o. e0 n* j6 C/ S4 Q y8 H0 n" A$ {
do-trade' r" q. R- P. G
4 X% \4 H$ k- i, x9 s vupdate-credibility-ijl
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update-credibility-list1 ]4 `: X0 Z* m# i
" [- d" l, D. W7 b
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update-global-reputation-list/ l! p& U3 H3 |/ B8 b# m/ {
( u% y. X+ b# Q$ B( I# q! u9 @9 Tpoll-class7 }8 Q t ^- |
: ~0 @+ Z1 o: B' z& zget-color
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Z+ E' w. I3 m; t" x]]
. b9 w4 d% z) S! \" } I4 E# ]2 ? ^4 k. Z; u
;;如果所得的信任度满足条件,则进行交易
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[
$ ^( }( [4 S" e+ [9 ^9 [
$ U4 W3 ~- m" O9 h# Y- x, b' w4 Srt random 360* K5 _8 h& c: C0 Z7 E6 w1 E& ?
( m6 Y* \! s. ]' w4 ifd 11 M; h! `% Q G ]6 W, x2 L
0 ^$ r0 B* l& C
]8 o: H! G7 p5 J0 f
- ?& M1 y. m w9 z5 L( G% vend
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8 j; A; X: f* A% Mto do-trust
, W) W9 j: l* gset trust-ok False
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- L% v! Z7 J: ]let max-trade-times 09 W6 J6 ` ?* t6 z; e) ?5 ?, N& P4 S
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]4 e2 O# B& B, M. ?. o, j( J
let max-trade-money 0, I/ r1 e$ \ h% B5 _! c. c
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
0 u) q" R' _; H2 Blet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))' R0 ^6 L+ }, g' M# G) u( u
4 \) D4 F1 A" D2 ]1 u/ |/ F" b
+ B! S: x) v/ s1 t! k; O, {1 gget-global-proportion- p' @9 y8 y9 g
let trust-value
* F* p0 L* D; R) qlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
$ `1 }& B9 ?; _# Nif(trust-value > trade-trust-value)
5 g, g; P3 e2 Q# y6 C' \0 O, u9 D[set trust-ok true], A, P9 h1 ?, f% K
end0 y6 A7 `$ ]! d# D# R
' q4 X( s2 ]$ {% ~# N' U
to get-global-proportion! h3 s, x n+ O) }
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)# I5 b- T) r* X2 \, m, J" I0 ?
[set global-proportion 0]
* w# b; m% x/ e[let i 0
9 ?1 Q5 @/ P; [8 T5 G" H! U6 w2 mlet sum-money 0
- v9 ]3 p- e( Uwhile[ i < people]
! c1 B$ C" I' T! ]: F( Q[, e; Z+ n. [" @0 ~% X s$ V( n
if( length (item i
5 g6 T# Z, @8 k[trade-record-all] of customer) > 3 )0 ~. e* f4 g3 G
[
2 T% t9 J% F5 Z. P! Uset sum-money (sum-money + item 2(item i [trade-record-all] of myself))6 C8 @) p% Q+ f6 ^; m
]) @1 F/ r& s) _, ?8 l. |4 l
]7 C: K/ e2 O7 h! Q7 F9 D) T
let j 09 Q$ u7 K) ]$ a! P
let note 0" Z& V* Q- h6 y$ \6 q
while[ j < people]
5 z Y9 o+ ?3 d" ?[
% y2 A" T# o4 D& _if( length (item i' h: n! s. r' F
[trade-record-all] of customer) > 3 )8 _5 t4 ]1 W1 f. d/ D
[
* e2 F" K9 s2 Z5 O! P2 k% z# Qifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)* c) K8 x1 ?% C9 L" Z
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]8 p- O5 e9 V5 n$ @8 S9 J
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]" f* W2 p. S4 J3 x- T+ R
]' G& _, f |5 } `! m k
]4 n1 F: T: ~+ I" e7 H& w; W
set global-proportion note
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1 c: b, }# _3 Q5 r# G7 a# [! V dend
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9 G% U& `0 ~3 e% u+ H" Hto do-trade
, a) r3 O- ^& {/ C;;这个过程实际上是给双方作出评价的过程
/ _7 t' ^9 o- y6 d$ Nset trade-record-current lput( random-float 1) trade-record-current ;;本turtle 得到的评价$ O1 D0 g& s! r4 ]& J+ d, j! D
set trade-record-current lput( random-float 1) trade-record-current ;;本turtle 给出的评价. H9 i# p3 k: w& ] s K, @
set trade-record-current lput(timer) trade-record-current8 {2 x; I: v4 k+ x! e+ Z) F
;;评价时间% D3 }" {" z- F* ? x
ask myself [% [) X0 n: c! Q
update-local-reputation
" Z6 T$ Y. p0 M/ I' o( I# m2 Cset trade-record-current lput([local-reputation] of myself) trade-record-current
2 n T: K& R! g9 f]" @* |2 r( n) P
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself) v& L( q/ j4 t8 `
;;将此次交易的记录加入到trade-record-one中' v$ t9 z& H; c- K. H. Q
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)7 N1 {* f" w+ S7 x4 V
let note (item 2 trade-record-current )& Q$ a3 G9 E& C
set trade-record-current- G! p; p7 l* F0 i6 _
(replace-item 2 trade-record-current (item 3 trade-record-current))( \- f: \1 Y3 o @* J
set trade-record-current5 q7 x4 @9 A) P! X. G" Q
(replace-item 3 trade-record-current note)% s0 ^0 Z6 T5 ?+ o; k, ?
4 ]+ f1 F; i c3 t# |% L0 ]/ n. z, b* a
. \. x( V2 D0 |, ?9 c6 lask customer [
& h8 w3 Q5 k" l* xupdate-local-reputation3 w+ @( m! O( r) y
set trade-record-current8 v! c2 y6 j( ]& v$ s4 ^8 ~
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
( G8 C( v# D! f& \- ` L2 r]
$ ^( [' }8 ]+ {6 M3 V. Y0 o' |
, f" L6 s6 L' q$ N0 b$ c; @0 |" t( y# Z! b" V! }- y
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer( q! `$ r* p: Z$ e
2 F, {3 r+ I5 Iset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
) ?, w8 Y$ `% p+ f;;将此次交易的记录加入到customer的trade-record-all中
. Y, G q6 i2 h" F9 Nend% v' G$ u; b. z" V& a9 h7 C* m$ Q
6 o, h: u: H; t6 t3 i
to update-local-reputation5 R! ^ D6 I% h) X$ W. F4 U# T) V
set [trade-record-one-len] of myself length [trade-record-one] of myself
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;;if [trade-record-one-len] of myself > 3
0 d3 w, m1 c2 L* H6 nupdate-neighbor-total3 `7 n1 ?9 O- a2 i( v; F$ S3 q
;;更新邻居节点的数目,在此进行) Q$ X; Y" ^3 D6 q ]) k, f
let i 3) a6 ]2 [& P2 |4 Q
let sum-time 04 N& Q8 G# b( ~" ~& c$ r
while[i < [trade-record-one-len] of myself]9 Q* d$ ?; [+ p" S5 n0 U
[& S. Q, g7 S- z; Z! M# G4 \* U
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ): ^1 k4 s/ V) A5 j3 X+ z9 C4 M- ]
set i$ D( j0 p8 l' c/ z0 m& k
( i + 1)
+ C0 A" a8 @: j7 l]9 q% L7 c5 E* W3 S& R
let j 32 n# g4 X- V0 u% A2 z
let sum-money 0& {6 Z% a* ]9 W; b! D
while[j < [trade-record-one-len] of myself]
( [! M0 c* b8 I8 o! r* X[
: f- h0 C9 {) P# b, T' E' z! aset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time), e4 `+ j, Q8 p8 V2 R! H. p
set j
b+ }9 [# ^9 n4 }( j + 1)
. N# L( _6 _4 j# d( y], b8 i B2 l S: q% _/ b5 j
let k 3
* l" X; C p$ ]. M( blet power 06 u5 L7 {1 d( N4 E. e& f
let local 02 e$ T2 w m6 Q; S
while [k <[trade-record-one-len] of myself]
7 M6 ?3 j% Z D% f[
; X% u" i+ x: F. [9 sset 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) : M! ~8 i0 A0 L+ E3 r
set k (k + 1)
( }! Q# u" q3 Z]9 b3 M; a$ d0 A1 C1 ] u p) ]
set [local-reputation] of myself (local)$ Y I: _, s# B8 v
end0 }2 T. C" M; O7 J& e
7 D4 w$ s% ^3 E9 }) ~7 p# p) E' }
to update-neighbor-total$ W0 z+ m) c+ |. |" f" q1 Z" I( ]
( |- c& ^% ^6 O- |3 ^! yif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
3 ^1 z9 B! p3 N5 u' w6 x
3 @! G {5 I+ ]. @2 s
8 U+ S4 t: q+ L( L+ fend7 D+ [: }- e6 h m' I
3 ^7 G: v' ~1 M( m. @ D
to update-credibility-ijl ' [/ l# j3 x) @/ P) }
! y' b' s- C5 O7 V& K9 _
;;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。
, h: w3 W/ t! Dlet l 03 ]! K- t& M) w
while[ l < people ]
: k+ \8 z/ N$ V$ v2 G0 i4 H;;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
( _. Q& z- ^) O* n4 t2 F[
: V; d: T# V" `let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
) T8 L% U" E, }; f: _0 q2 Aif (trade-record-one-j-l-len > 3)
9 v( c, U+ A: |, A+ C% A3 e[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' }& S# q& L" u( q# m8 V1 `
let i 3& A9 Y S% F1 y6 j
let sum-time 0
5 j/ c7 h7 M1 X( ^; e; iwhile[i < trade-record-one-len]
$ X# ^: h) l" E* S x[% o0 i" [0 Q+ `* M
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
+ m% B( R8 G4 \6 bset i# o- ]2 s. h w5 j5 d
( i + 1)
* M/ s; S1 M# {]
5 L- a l6 M4 _) U! h! f$ ^# l( `let credibility-i-j-l 0
$ B, [+ ^% p! L, \" P;;i评价(j对jl的评价)
" G0 H( x" I2 d, _4 k; e, E N: mlet j 3# k9 h) x5 j R9 Z @9 s0 \" Q
let k 4# U$ a% s4 ]/ g3 C
while[j < trade-record-one-len]: J! h- @; t! }# }
[
. S; Q) Z; w: Z+ wwhile [((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8 ]1 ?' A% c+ n( 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)
2 y3 v' L9 c: M/ ~6 R4 d1 Aset j
2 y ^) R0 f% o# C4 _' E+ b( j + 1)
4 _5 ?; d% B2 c]% f% l: o4 `+ G8 j
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 ))- p4 I5 l% l; Z! ~" \" S
+ z5 f4 G% L H3 T" W% O4 N
! K8 ]& ] T( C9 [! N8 llet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
}. O0 K8 y4 {4 g;;及时更新i对l的评价质量的评价
) ^/ Q: ?- E. L* z# |& eset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
( d' T0 c# I) w4 i m5 Z8 iset l (l + 1): ?7 d# I$ s( @: A
]
% A! f( e; T( M6 ?0 hend
( |. }+ r* `% o; `- g" B: y; t. t
; K& T# P1 f) w. K0 P4 }- i8 Vto update-credibility-list' N# W& ~" t2 B8 B3 _ w
let i 05 [$ O5 ^( \6 b" C$ A$ O
while[i < people]
3 ]* ?6 }) ^# Z) d/ [$ N, v[
% E4 z% Z1 y" t; alet j 0
& w7 q& m- b3 D. Ilet note 0- _: t% ~% u& |. W M4 i
let k 0
" S' @6 D8 L! J- j" a* S;;计作出过评价的邻居节点的数目
6 |/ N3 z0 ]: k" r4 J& s0 Dwhile[j < people]8 p+ K* H* k$ O: B! w8 n
[
# ?2 r* @, I, a6 N. }6 D$ kif (item j( [credibility] of turtle (i + 1)) != -1)6 y8 t/ ]; q9 k, A
;;判断是否给本turtle的评价质量做出过评价的节点
$ n p& Y- U; c3 q[set note (note + item j ([credibility]of turtle (i + 1))): `% [9 [$ h- w; Z( ?
;;*(exp (-(people - 2)))/(people - 2))]
8 B3 T5 F7 u+ R1 `6 T& nset k (k + 1)
: r& j: x& t r/ o4 ?]; V; X5 H, ^( F( u3 [4 V
set j (j + 1)
' P' z5 J: U/ |. _' j" J) n. k+ a# E/ `4 n]0 K! w: R* b# F1 \
set note (note *(exp (- (1 / k)))/ k)& D3 r H+ ]) m( B$ _& K
set credibility-list (replace-item i credibility-list note)9 Z" R6 _3 q9 V
set i (i + 1)
; a( a# ?1 X1 H) V& D9 s r: r]! R% A+ e/ Q6 ?
end7 w1 x% Z! v; l7 ]( F' ]% n Q+ F
. `4 h( s' ^1 k$ g: qto update-global-reputation-list
$ |3 F M# f3 w0 |3 dlet j 0
1 T) k4 n0 R8 G X0 p9 vwhile[j < people]# C- e% ~% d" s: B& I# w+ M
[
) U$ @# a3 C5 u, |% q: z K1 blet new 0
0 p: \! y2 U9 h8 c0 X- h;;暂存新的一个全局声誉
. u! |( l$ R% Z, o+ I8 S5 n3 `let i 0& p! K/ _: S$ `5 K. c+ Q
let sum-money 09 k" u1 F# D% Q, i9 x/ ~
let credibility-money 0
" i& A8 I B& K, lwhile [i < people]( b$ m- h# _( }; ]7 s! I
[
9 L( X: C$ J) I! F" L5 [& `) _set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
* `9 O9 b' h' Wset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))$ S% s5 d- M _* y* v c0 w
set i (i + 1)
4 J: e) \* f9 H" k$ Q$ K( ^$ y* W]
# y0 J3 u& B! G- nlet k 0
' C! \1 J% s& V$ Ylet new1 0
# ^/ n$ Z6 Y" o5 @2 {6 B' E. Uwhile [k < people]
2 D# b5 n* Q8 E* O% V[, v( j- U# v; S3 E# h" g8 E
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)) h0 ~3 K5 }# a0 f, I
set k (k + 1)
. o: }1 B3 @ A9 w]( ]6 [% I3 ]) N1 w, g5 P
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
* t% x: X- q4 v0 f* Pset global-reputation-list (replace-item j global-reputation-list new)
9 t4 D' U7 P6 P; M& G Pset j (j + 1)
( Z) z6 V6 G5 T3 K, [: z]. }7 C1 J, R. f' R
end
c3 D4 k* Y, W
' G( f7 X& `4 T: W' m) K! X+ Y/ | G$ \5 G I. o
% Q9 X2 Q! U4 J- u* Q2 Nto get-color; a7 t/ M3 d( H, z
5 Y% H+ B/ B o2 T) \' e8 [
set color blue
( K) F$ r, Z& Vend0 v( Q+ N' u. A$ {7 r. s. t$ ~8 V
6 ^8 V: P$ a6 y4 I% z2 Ato poll-class8 O6 y i4 U4 {" K0 f
end# Z7 m! S0 @: A( v3 M3 J
( K b- q, ~, d5 r' Gto setup-plot1
2 v5 @) J J# u
3 S- a2 a, B; l# S4 H- L3 w8 Jset-current-plot "Trends-of-Local-reputation"7 F3 y5 h" B& I. g" D8 L
5 b" y7 W) e- q5 _# r
set-plot-x-range 0 xmax. C+ j" s: b% O, \4 u0 F* H
3 b v. {4 o' A$ w$ a/ u3 G: b
set-plot-y-range 0.0 ymax: W2 z7 I; B* v
end; s# }7 I/ D' K& q" [$ Z
7 G! K I; M9 P; Fto setup-plot2
, L- W! R$ A2 a/ ^8 G
/ Y. J& r0 I/ o) mset-current-plot "Trends-of-global-reputation"5 w( K: d' u9 G: m1 g" F
- _) [; o) q! s; Qset-plot-x-range 0 xmax- P. `* V4 M7 R/ b' L" m J' W" J
2 ]1 \& R, {( l+ K- h% vset-plot-y-range 0.0 ymax
# X0 [' w' o; c9 Nend
. i: ]! u& {) X/ r0 m* S q [0 A; U) ^- G" G
to setup-plot3
0 x9 E& V5 j# o2 G& j
0 E3 ], }, R& Q4 |8 E- u+ Cset-current-plot "Trends-of-credibility"
$ A" m8 [ B7 X% j/ ]
# H, L% H/ X- Tset-plot-x-range 0 xmax
3 o, _. e" a" j f! E% g6 W% t& T. R
. d9 g& j( Y7 U8 gset-plot-y-range 0.0 ymax
7 n( U( e6 y* R' l' \* y- Tend% e, m- S: P i; X7 Q* ~$ c% r
" H* `% F8 U: F' P
to do-plots5 F& w8 t# _$ L( z+ k# o' G* t
set-current-plot "Trends-of-Local-reputation"
$ h/ e- h" R1 ~! iset-current-plot-pen "Honest service"
. q n' e3 H7 k0 B" }7 `* w5 Wend" {! `: \- I, e6 @0 Q
t0 i4 U+ _! `4 z- D6 r/ g! B[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ] |
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