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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
) ^5 h8 @. H( i. V$ Dglobals[
H8 I3 a$ s5 pxmax
( L! D* K( u* r6 y$ ^: z& g0 Xymax( S) G3 N5 N* V! N* t1 c' u
global-reputation-list
4 \/ D1 g; r, W/ ^
6 {8 L, G6 l4 M& r* T5 [5 w;;每一个turtle的全局声誉都存在此LIST中6 m9 J% E1 t* Q" J+ g
credibility-list% T1 b/ g4 \9 m; [/ p% L5 {
;;每一个turtle的评价可信度
! D3 q2 S& U9 @' |+ @3 A6 z9 Zhonest-service& X' |) h, x" k# U+ |& O( j
unhonest-service
: F/ {% @, f9 V8 voscillation
/ l9 {5 l6 Y7 e' b' frand-dynamic
/ \, f! X8 w7 }" F]- x' f. R) n1 u7 I
# |7 Z1 x; N* K) d, }% v t: bturtles-own[3 L1 U& N* ^* X/ `2 z% ^# U
trade-record-all/ i" _, ~# `# `; h7 z
;;a list of lists,由trade-record-one组成
5 P" q1 H* N" n/ Otrade-record-one
; \0 Z; @, t7 ?' G W;;list,trade-record-all 中的一个list,作为暂存用,记录两个turtles的交易记录# l( Y7 }' b+ k
& D; Q" v) i, U
;;[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]]
1 z. ?1 x* |. Y& b, S. P% L, f( ^& Rtrade-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]2 Z( `+ `! E& C
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
; A! U0 r: |3 b2 _7 Dneighbor-total2 y5 o& U) J, j/ B" {$ j5 K
;;记录该turtle的邻居节点的数目
1 J5 ?4 ^+ f$ r* D$ q! O" htrade-time
" [# O& x. P# i;;当前发生交易的turtle的交易时间
0 o2 h S" K) Z8 B6 mappraise-give
/ r: G! x' w, k% A+ ]0 T- [;;当前发生交易时给出的评价
' n! l( K/ I- J6 g4 A' Wappraise-receive
+ v- d5 ]: ?& X& g/ Q;;当前发生交易时收到的评价
8 V* u8 `& Z. l6 ~; |4 G. ^appraise-time! D- p1 {4 s9 H% U; a5 a7 ~
;;当前发生交易时的评价时间
, F7 ~' h3 V& F9 d5 v/ Dlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
2 ~) Q# Z' k( S! btrade-times-total
! p% d* U( o) b1 u c;;与当前turtle的交易总次数% i- c! e! d' j# |* \9 g. j1 s
trade-money-total
& h" r% r/ p4 e% ^. q;;与当前turtle的交易总金额( o) n( s& Y4 I$ F1 m: e
local-reputation: A1 [$ v& v. y$ t$ i
global-reputation
2 d! `0 c `9 U- Vcredibility1 j q2 T5 M; z% q+ x6 x
;;评价可信度,每次交易后都需要更新: p5 q0 w1 \/ o
credibility-all& \4 Z7 Z7 F7 v: B: T
;;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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0 i7 T* | \. K0 d% ^& H$ V; M! P* d;;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
+ K* R6 H6 h$ \/ x. vcredibility-one
' U' }- W- ^% F# K9 v7 p- a;;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
# o4 ~: G) N+ z! B9 qglobal-proportion
" d5 I6 [ ?4 y( O$ |; i$ Zcustomer
. K3 K0 W! y; n7 g" ^customer-no
3 x8 X4 `7 O4 p+ @trust-ok
" n2 z3 N, Z8 N6 V f/ Btrade-record-one-len;;trade-record-one的长度
: [4 L4 V* W1 w* L+ D1 o]
) L3 t( b D+ z0 @+ b
! Y2 Q1 s0 X: G. e;;setup procedure) p2 m8 V6 }# O
1 j6 ~, [4 d. G& U5 b; |- Q
to setup6 {2 h2 e8 S. L; F0 X
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ca- u/ ^$ Q* k+ i) ]% }: Z7 b: y1 y
$ u6 {' G) B+ @/ z; i& Yinitialize-settings
3 I6 l' ^# F+ r& v' l3 Q7 J) p. ^% S" g0 D' x( t
crt people [setup-turtles]
' a; c! c0 G5 ~0 c0 t, }; P
: R( @, h; y' w- l( Oreset-timer
+ z# ~0 w6 B3 d7 l# M
9 o) f$ B0 G: A! v. x9 P6 xpoll-class3 y8 ]6 s1 |; i/ ]
* C; O4 ~$ h% T' e+ u2 zsetup-plots( ?3 x' Y+ Q* ~' V
% V/ h0 _! m. a4 l) F8 |do-plots
1 E3 u( R+ P Lend( D" `/ c( y6 a* ]
* N5 H( s1 v0 T f! y
to initialize-settings3 b4 ]) L$ |7 b# t/ X6 h
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set global-reputation-list []
3 E4 ~. H) W* I) L' D+ F
, U1 L- U1 Q* K, l$ Mset credibility-list n-values people [0.5]! z6 D {% T- t# g
/ l, {3 c0 w8 s$ [' ` Q3 g
set honest-service 0, q9 O, x, d3 g3 |: @) G c
2 h# c3 S5 W* x
set unhonest-service 0
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, a! Y: V" Q5 K2 M- {" B) dset oscillation 03 j1 O9 D8 N+ b% c% ~3 z1 w2 q
5 A5 f" @6 m/ L1 b- F
set rand-dynamic 0
1 X7 Q1 e+ W g5 x& G% f; y8 lend
0 j" d2 d6 u0 q, k: d) N9 ?2 M) ^; `% M/ x$ y% E- }8 Z/ n$ J
to setup-turtles & J" Q: M: r7 @+ }/ ` g
set shape "person"; t. N3 ~/ m' j7 r o& j4 d/ q
setxy random-xcor random-ycor1 T( a1 {8 p M" |: y% L* w. s
set trade-record-one []1 |% k6 x: B& l) Y2 f$ x+ H
5 K" ?& @; s* z) q+ R
set trade-record-all n-values people [(list (? + 1) 0 0)] + a) w1 L, p& T5 y, g0 P5 V
% X4 f+ {/ i: w0 v7 s9 k& i: ]set trade-record-current []0 }! j$ y* \% q b
set credibility-receive []3 e7 o8 Z/ s% ]( ~- m% _( K. T8 N
set local-reputation 0.5
& `' d) p* g5 B; n7 Pset neighbor-total 0
# M7 r a! G# B6 c; oset trade-times-total 0
1 _0 ?( y Z: S7 kset trade-money-total 0
% p* u9 W* ^ x$ |6 l- d0 Sset customer nobody& y# \2 q" J/ z0 Z1 j# h
set credibility-all n-values people [creat-credibility]4 U1 ^1 ], w9 b! V X/ a
set credibility n-values people [-1]) r/ W l* ]! B6 t' K
get-color$ Y2 z8 u5 c4 H( x; K
+ F9 r5 p. ]2 i; h( [end) o/ E! v6 Q8 v! N8 E9 q+ o
X, m0 U! ?, I1 qto-report creat-credibility
$ w/ v4 T5 J1 X0 `7 preport n-values people [0.5]0 q- W( M$ Y9 H+ c) P" E3 e4 X
end
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to setup-plots
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set xmax 30
) x) h) X! j! m( V$ I
2 a4 p& K: D ]0 Mset ymax 1.0, o. X1 [! A5 X: H0 [! P
6 E/ _) @4 S7 d$ E, {$ g' r8 B' B
clear-all-plots, o, Q. z2 I2 k" `* i4 {
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setup-plot10 ^+ T0 N" H* b b4 A+ ~4 y N) c
: j+ ]- }6 B2 W$ ^, {5 ]3 Csetup-plot2
& o( d7 v+ m* b7 Q& T1 W, ?5 }, k2 ]4 S$ w0 S4 b3 }" D6 ?
setup-plot3, c% X" d" a2 s! _6 X
end
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7 q& I$ c7 t) S) i;;run time procedures
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to go% Q' B. D Y J% \9 x$ ]7 i7 _
( {% n0 ]6 r% u" o. }ask turtles [do-business]
- [& `; |- W( L. xend( H; R i* ?% d5 r2 w+ w/ O: ]( i
+ I" R |" r4 V2 nto do-business
# X( A# W# \# ~' ]5 X3 F0 O# \6 L- n f% j8 F3 e
: F1 y: G& M6 h7 H* g( J: i- g% u+ yrt random 360
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( S( g. E$ q9 Y1 zfd 1
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! ^: U' n/ c4 s7 ]ifelse(other turtles-here != nobody)[
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% G9 n/ f! _5 Vset customer one-of other turtles-here7 T) B5 r9 L, V( k$ _) k% _; v
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;; set [customer] of customer myself
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set [trade-record-one] of self item (([who] of customer) - 1)7 z4 M) ]' G3 y, p }
[trade-record-all]of self9 u7 a# @% f. e% S$ n$ ~
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self' n* O/ ]8 t2 u! F
1 R) X* |) c; [' S2 @% G; ^$ Yset [trade-record-one] of customer item (([who] of self) - 1)' s9 G1 `" L n' A& h! ~8 J
[trade-record-all]of customer
# T+ l) v) i9 [+ S- ~+ c
0 J; L, f$ X- M5 m1 f5 bset [trade-record-one-len] of self length [trade-record-one] of self
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set trade-record-current( list (timer) (random money-upper-limit))% }7 \; a+ ^7 @
( y* X- v1 J/ S6 W5 M' @) Q2 z
ask self [do-trust]2 q" b/ f5 d" g+ d7 l- w$ |, g+ q& l
;;先求i对j的信任度
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if ([trust-ok] of self)- E$ X1 P6 z: h `; a9 H# n
;;根据i对j的信任度来决定是否与j进行交易[% u# H# ?/ C* \: `2 \6 M$ E: L
ask customer [do-trust] if ([trust-ok] of customer);;这里可能会用到myself. m, b5 u' c( N; C- Y& Q
' b9 b% e& T( b: x a6 e
[
! D" z) `3 {$ A& d1 ] P$ A) X6 G5 s( n" \; _4 }$ ]) F
do-trade
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update-credibility-ijl6 @9 j+ S9 m: s' Y
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update-credibility-list6 t4 A# c/ A1 _0 b
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& k7 O/ s; O) Q% U3 S! J5 R8 T) @update-global-reputation-list
0 S. P* g2 w# Z6 U/ Z' R
$ c; c8 H/ Y; c" }( {. M) D% q$ Lpoll-class
( q9 Y% c" n5 f" O" m
# |9 N' H6 V9 D, iget-color4 A$ U' U9 ], g( \; Q! T
9 ~' o/ F& c) @- f2 O: U1 }1 P
]]
+ Q; D* A9 A. C0 P! S* G( U9 Z: I3 x ?# K& ~% N* l* u
;;如果所得的信任度满足条件,则进行交易6 |' }& z( X2 _8 M
3 |. o0 c- E: m) m9 H6 |( _" ] S[
# k! L0 E r0 \0 k& ?
# ~% p$ U' a2 K' zrt random 360* y% o2 i! g- e
+ [: |* l0 |3 B& Y& o. M% d; g% V
fd 12 d" u# R' j$ k7 f8 |
+ t" ^# W. v1 K. g( Q2 {9 f- G
]
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7 s& _5 r9 \' W0 N& r( dend
, J. u( a0 Y3 v! z% T: m% y' e: L7 \4 q& G
to do-trust . R" w4 Q& g) f$ l
set trust-ok False
3 D1 g$ ~( i F0 ]
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let max-trade-times 0
& E% m8 U- @& ~0 z6 jforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
. A5 y; _; m; c* ?- ^, ^$ ?+ I Ulet max-trade-money 0
- M& Z/ N* w }# W- Y. S: g+ rforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
% [' e( D- h& E7 Qlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))' P) _" z9 [, P2 A" {
8 t9 T; L2 \8 X$ e' n
. y1 e$ n4 v: T. W4 r
get-global-proportion
4 d2 m9 L* i) Xlet trust-value
) x2 [4 k m5 ~- M+ U9 olocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list) D/ p6 I0 F% a# S+ v# x" d$ s( V! w
if(trust-value > trade-trust-value) r, S) L( I! }
[set trust-ok true]
* h3 }: r: j2 Y2 u" d _4 vend W" c6 ` c; ~
5 V5 v7 d( h6 L" Z. m# \2 Jto get-global-proportion4 C+ ]/ t) N E: Y: T2 h. g
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
# R. x' b( j: a$ \5 g: ]* v[set global-proportion 0]& t8 Z: Q+ e9 _0 M1 e: R
[let i 05 u7 Q1 \- M# G9 m) V
let sum-money 0
4 b, Z" F5 e, n' \2 Y$ M3 xwhile[ i < people]
. l0 I% g- ~# u% p# U[( L- e8 Q S, R
if( length (item i+ w, S* P: E- L. U7 n
[trade-record-all] of customer) > 3 )5 n6 J: X4 @! p1 F# X9 m" _( k$ x5 G
[0 }( _% H* a& _
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
4 e- y6 s4 C1 @3 s% x v]
7 F! t H; @; {5 e( L( W* H0 r5 Z]
: ]2 j$ l1 I! p) dlet j 0
; b3 R' Y* F- `: c3 {* \* J' q& \let note 0
7 _" ?# s' O4 o' Twhile[ j < people]7 F; j8 t W7 p+ T, z
[3 `0 m$ L6 i8 D6 E1 u
if( length (item i8 O$ u; m# r# X* a9 j1 S# y' k
[trade-record-all] of customer) > 3 )
% S, X% U3 t& ?. `. u' G[
( y" k; K4 a; ]. j/ e( {ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
$ X* @! w1 q/ L6 H, e, X6 g[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)] ^' {$ i) k! W' S& U; w/ a
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]* X3 h( C0 m. D! P
]
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set global-proportion note
! M0 k; G- m. H5 U K/ Q]
1 M' W/ o+ R. W2 e3 \; a' Rend
9 D8 \1 m4 D/ k% ~3 h2 y
# V& `, i9 I1 oto do-trade2 e* Z1 q3 z* {% r& l
;;这个过程实际上是给双方作出评价的过程
$ | @( y7 b! t. o9 X. M" I8 {set trade-record-current lput( random-float 1) trade-record-current ;;本turtle 得到的评价
! @8 B# j% H( S; @set trade-record-current lput( random-float 1) trade-record-current ;;本turtle 给出的评价
0 k( h( W, W0 L o rset trade-record-current lput(timer) trade-record-current
: ^% [: D( ?6 i5 {0 V5 P" d;;评价时间
6 o0 l! v& [7 c: s3 I$ Z# Y6 gask myself [6 _' z1 ^1 L* t; J
update-local-reputation1 J/ n" H; A0 E( u! F% S! ]
set trade-record-current lput([local-reputation] of myself) trade-record-current
8 A7 M# I! R7 p- v# {$ E]
6 d4 g4 U% g& P z) a3 H9 h Vset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
/ H% z; L# |$ E; }: K' S+ V;;将此次交易的记录加入到trade-record-one中. f1 p/ G. C0 T/ y& n3 {
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)7 T0 y. k* a9 m; Y8 }
let note (item 2 trade-record-current )
8 y1 E. O$ h$ \; G, Gset trade-record-current1 z& K4 p" a# u# _& O0 J& u5 n: _
(replace-item 2 trade-record-current (item 3 trade-record-current))
) f/ o6 f: _# U$ m% y- ^5 cset trade-record-current; \8 K& J! ]) [/ U/ ?* b; }( s
(replace-item 3 trade-record-current note)3 w, q8 G R4 _2 ~1 z- Z
2 T3 i1 T9 S' F: g8 ` K( p
U" T! _0 _) T/ f. }, h* I
ask customer [ E$ \9 Y0 g1 s' L! H1 a
update-local-reputation7 e! Q0 Z- n% V
set trade-record-current
) A/ @$ x8 O1 P8 Y' e(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
d0 `7 b7 z2 h8 ]% N. u]0 j- h' Z. ]: i( D2 m1 B
2 e% [ h* g% a
5 o q" T/ F' E6 _
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
4 P7 p6 P' R$ ^) ^# ~% i+ I' C
- H7 |. \' M; kset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
3 V0 F1 Q/ p, Z8 s7 m7 X$ H;;将此次交易的记录加入到customer的trade-record-all中
7 x4 S: I( H6 Cend
) `- ]& Y' b) Y6 G! x5 z9 z, v
3 _- R# O* b* j( Tto update-local-reputation
( S* c; @! d: p% N6 O. M$ Y1 sset [trade-record-one-len] of myself length [trade-record-one] of myself6 d6 g3 X, I/ Z' H
: ?; n X6 P" _
$ O9 ~& \( C7 E* M% R- r! B
;;if [trade-record-one-len] of myself > 3
1 [ Q8 _& }8 i1 J$ v) ?4 dupdate-neighbor-total( E- l4 U+ N5 g$ U+ ~
;;更新邻居节点的数目,在此进行
* {( d# ^( s6 y1 l" @' ?4 Glet i 3
+ \! z+ G7 p7 Xlet sum-time 0
+ i8 U: x9 Z+ jwhile[i < [trade-record-one-len] of myself]/ L1 W7 N7 w6 ~- \
[
4 D* t" ^% B" K# Sset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )4 f0 M( C: x ~+ v
set i
- h/ h. r) O: a# g. M* ?9 W. V( i + 1)" `. B) P. p- i7 g) _9 U
]
" X$ V1 U [. v# A! ^let j 3# m k& m0 M1 D4 O- g
let sum-money 0- K) v7 h3 W+ q5 n8 `/ y1 @
while[j < [trade-record-one-len] of myself]
( B: F7 L9 \2 ]- U[
' y3 B" a1 F! f9 w7 W. p* P' @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)2 v5 p) L. ?$ W+ W
set j G2 `; G/ {5 _3 m$ S
( j + 1)
' S& R" U7 _) m9 Y' F1 R]
- g1 e" Q5 I- @( u1 `let k 3, ^6 E) n2 v" l7 g3 i
let power 0
$ E( r0 g+ k& N+ ]# W8 {; t" mlet local 04 `5 X$ {7 d: L: S, d
while [k <[trade-record-one-len] of myself]
4 [8 ^4 ~6 \0 \5 Z[, W6 H# \. T5 C( L
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)
0 c: g t6 F' A% z) l) \9 Bset k (k + 1)
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) R8 X. C: @- K3 e# dset [local-reputation] of myself (local)
7 w; ^" H U" K( qend
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to update-neighbor-total& d. d. H: E: i& P( L" A1 j; M
0 E9 [5 i2 l, |5 H
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
+ C6 h9 n# D& c7 b% G) }: y: Z+ Y3 x
+ q# I( |5 U3 Q L6 I& t4 kend
}. d( t; m; }7 q, ~' o( \$ K- E! K3 r5 B7 T# [& ]) c' h
to update-credibility-ijl
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; e9 k; A, X( ?7 l2 O2 i;;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。; m; Y: h0 p: s+ \
let l 06 f- C w; o' F) `. A5 _* o. Z4 L. Z, n: n
while[ l < people ]
( s! B% x" t6 @) o& i;;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; { D; e8 T/ ~0 e& n$ j
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let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
1 [+ s: l8 T# y' l. sif (trade-record-one-j-l-len > 3)
! z1 M J ^9 T6 N! K5 _2 ~- z/ O% q* I[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
3 I3 z3 H# q- y* n" M- K7 hlet i 3
) u- G* Y# G' X% _' elet sum-time 0
2 n3 R0 ]: E0 x: Hwhile[i < trade-record-one-len]5 K" B0 d8 P1 n/ O m3 U$ u5 ?$ N
[
7 E! Y0 K8 i9 w) X' Iset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )& X% H1 v9 Z9 p
set i/ p0 j$ M+ y! s( w4 S
( i + 1)4 G1 K# v% q9 j) c+ B. F
]
9 A4 m$ p7 Z# T1 ~! [6 v4 h& B3 B' Klet credibility-i-j-l 0, B e5 D9 L$ p, I. D8 `
;;i评价(j对jl的评价)
" j1 x9 b: {+ f; z; q: clet j 3
* x, w5 \2 s# D |( e/ b7 qlet k 4# }( N N1 o; c7 q
while[j < trade-record-one-len]1 f5 r6 B, x C* O$ V8 v& N
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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# ^) Q1 o/ z8 {, C# E! T- 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)
' E/ x- i- s2 Y) Qset j
0 ^; P+ p& \; c0 K& _( j + 1)
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w1 O- I- @& \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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2 Y; Y+ w0 u' `
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
$ C5 b5 B) j. |( f, Z* H. p' z2 j;;及时更新i对l的评价质量的评价
0 W2 d1 ?$ `/ J0 xset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
0 x( ], z" r% Uset l (l + 1)
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" h( J) T% B2 Q! ~0 tend
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to update-credibility-list
. ]) `( `9 u& P6 xlet i 0, U; ^4 C1 d8 \3 \
while[i < people]# T* X( k1 f6 R0 h
[/ s, L' x% _. V& }, g% }
let j 0 _6 c( d" f: [% e- C/ S3 f( }
let note 0- a* A, h& n, [3 f, t# g- `0 D4 c
let k 0/ V+ m; q4 W- E
;;计作出过评价的邻居节点的数目
J3 z( L# C8 G; W$ D5 Lwhile[j < people]
( |! p7 ^3 e/ \- Q2 i- P b/ R, l4 v6 p[# C+ I* G/ W F6 }: W2 S1 |- l
if (item j( [credibility] of turtle (i + 1)) != -1)# [1 y3 {8 A9 D( r/ v
;;判断是否给本turtle的评价质量做出过评价的节点
$ R' |; G' m# d; u$ y[set note (note + item j ([credibility]of turtle (i + 1)))
7 I( X/ f4 ]5 y;;*(exp (-(people - 2)))/(people - 2))]0 Y$ }- [% i, [! m# |1 g
set k (k + 1)( m$ d+ H {. ^# t8 U* ?+ y
]
1 p# G" H' D: `/ Aset j (j + 1)( k. E+ m3 d( c: B2 ]$ p# a
]- {9 C5 C9 V" G! b) h0 j
set note (note *(exp (- (1 / k)))/ k)( W) p$ J) c8 j) A# Y$ o
set credibility-list (replace-item i credibility-list note)
/ B* P. e! U U7 uset i (i + 1)
3 F0 O0 W' d; Q% P* S]% Q0 |/ \& z& X R- N/ G
end' V3 ]+ R1 \8 b6 M( I3 a( J: b
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to update-global-reputation-list( E1 `8 z. \ @" A, \' E) m, B% B
let j 06 E7 k( t- s7 D `) ^+ ^3 R
while[j < people]
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& w1 Z( I" `( i D7 E4 n" s9 Z. X6 _let new 0 K9 @1 m2 M* L5 T9 ~1 u
;;暂存新的一个全局声誉
& W" O8 C& K) f& C4 A l( Dlet i 07 g W- S# j6 A4 @( R) i8 N$ j
let sum-money 0
" E2 G" T4 F0 z7 d* Nlet credibility-money 0
' N7 y* e; y+ H, H: P! Twhile [i < people]
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- A3 `* \0 g/ ]- s- aset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
# [' W5 q4 ~! m P y) }2 k" oset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))' g4 c/ [% e% V% U& q/ ~% H
set i (i + 1)
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0 }. Y' T( Q/ y8 Q) J$ zlet k 06 `' n$ c/ ]: B V
let new1 0- W% y1 u7 |4 a4 C( P* P
while [k < people]6 h" n) `6 U. v
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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)( j. y5 l9 P$ S+ `# A3 Q
set k (k + 1)
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. a* {. Q2 A7 f/ Kset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) # I* ?; t: x, U2 o6 B; {
set global-reputation-list (replace-item j global-reputation-list new)
- s" G0 d2 W( A! I' C* Rset j (j + 1)
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end+ }* @. W+ a0 M
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5 g# y5 }" e. b) R; b0 rto get-color
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$ q# \0 ^4 J8 N, F3 Z. ^7 _set color blue( T) m& A5 I0 N* O; Q- @
end9 V# |- w% w- f* N% t
/ O9 M' S4 X" p9 k% R7 M5 ~/ z* Dto poll-class
5 c5 z' Z% G+ G3 q# iend
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to setup-plot1
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set-current-plot "Trends-of-Local-reputation"! F1 R3 B4 ^% w$ V- H. ^
0 k% j* Z, o A; e+ c0 Vset-plot-x-range 0 xmax
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4 p/ B8 N, U7 m! k! g6 G0 P% `set-plot-y-range 0.0 ymax
+ r' I; q( ^) K ~# [% w, ?9 kend; H/ M& z+ [5 U) V
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to setup-plot28 B, h6 M" l" g$ J2 f8 k; _
" z4 y+ i5 i+ P: h. w- v! J3 sset-current-plot "Trends-of-global-reputation") z# W5 ~) E" A( \0 H
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set-plot-x-range 0 xmax' h% S5 G/ Z2 E; z `- `. G% A5 a% q
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set-plot-y-range 0.0 ymax2 K3 O' y/ E' _8 ]; i/ n/ S; r Q8 |# W
end# }1 ]6 b+ }( Z" y8 H
6 X# K1 U: M7 D: ?+ _, t: tto setup-plot3
+ Q& A- K" U R4 z. _3 L) c& N
. f5 ~9 [, o0 Q! kset-current-plot "Trends-of-credibility". O4 w2 P# [ u
4 Z7 x6 _5 S' b2 P6 ?- c5 |2 zset-plot-x-range 0 xmax
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set-plot-y-range 0.0 ymax% {9 o( g/ q0 v
end
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3 i# e8 a" o/ q" Z; n. }. }( Pto do-plots
* }( a# x& p& B& Hset-current-plot "Trends-of-Local-reputation"
. @: ?8 _6 `; w1 G5 zset-current-plot-pen "Honest service"
; {# z& Z9 z+ r/ Y0 _end5 A! t4 j5 m8 i f; s: b
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[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ] |
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