MobiMine: Monitoring the Stock Market from a PDA
Transcription
MobiMine: Monitoring the Stock Market from a PDA
MobiMine: Monitoring the Stock Market from a PDA Hillol Kargupta, Byung-Hoon Park, Sweta Pittie, Lei Liu, Deepali Kushraj CSEE Department University of Maryland Baltimore County Baltimore, MD 21250, USA Kakali Sarkar Agnik LLC Columbia, MD 21045, USA [email protected] ! "#$#%&'(*)%%+ ,-)+ #." ABSTRACT / 0#10"#$)$#%234#$56#$,0#%378,0#9"&7:,033; =<6=#%,>&?.@A*3#%;#%3*,033;0&BC,0#$DE)$)%GFD 33)%H"&7-BI,JK&3"!DL#%"NMPO?QR+SLA#$#%3A#TUV#$7 =<6=#%,W&)7#%)$6#03"X#Y<Z#%3"Z#0"#$;3G+ SEA#$56#$[3#T&)%I\#%)1?&BH#*=<=#$,Y]^&,2#." )$3=)$3XB_#$3`%#.":Ba)%T&#%b*)%cBac#$.d #%33G+ / P,0!"#e@f!C3;T"7?,033;\#%)73g!#%%+ / #c&#$A"6#%)$#%[#*"&7R,033;h)%,03#$3!fBi#*=<6=D #$,j&R#%,0.<6R93UV#%_k#$Y3&<=DE&#."4V&)1 R#$l0)$#$3!<K#$#%#%3. !U!&`%# &3"0)%,0,-3)%&#\"#%)$3 #$#%*UV#$*,0#."93"6@A"6m@A#%#%T3#$n@8!%+ / #R&#$ &Z")%#$-Ng"!7&)K6;7&,0,03;DE#."Z#$3`.&D 3o,0!"#NK3K3p#mMeO?Q?0&3"q#9,-DE,0#." #."Z#1DL3#$Ba)%#%%+*SL?#%c#15#1,0#$3!7&G#%*3; &3:"N)T#%#$Dr&DL#$#$AS=ses_sutv!+h@A#%#%*3#$n@8+ 1.INTRODUCTION #8)%,063;["#$U6)%#$iV#eMeO?Q?% )%#$DE3#%% @f#.7#%% w 3"9,2*).7"*&#h%<63;b3:3)$#%3;<Z,0&73A# & 3:?"&<NB#+ / #R#$,0#$;#%3)%#TBP.@8#$Bai,0#R"6#%U!)$#% @Ap#.3#:)%,03;x3"p=&7;#:)%&)%n<40#$D 3;m&3X#17b&Bf"U3)$#."Z"&72&3":)%,073&<:3#%3U# ,0#X)%&3%+ w 3&3;o&3"o,033;y,0#$DE)$). 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V;;&#%;V# 3"KU6`%#*"6#%)%3 #%#%%+ 3.1 Fourier Transform of Decision Trees Q>"#$)%3#%#2KmBa3)$3&-,2T#b",23,0#%,KD #$\N073;#RB_)%T#$%+T6,0#$,0#%% cT0=<6,Y) Ba3)$3@A#$#ZBa#.#%m7&V#X=<,-) 336DE36,0#$) KU&D #$%+-?.@f#%UV#1. H2=<6,Y)-B3)$3y)%3X#Y#.&<X)%36U#$#." --3!,0#$)ABa3)$3b<0,0<K#%)%3;R#?=<,-_@A 3!,0#$)[U#$832T)%3=#$3!8,233#$.+PQ3!,0#$)fBa3)$36D #%6#%#%37&3q&B?:"#%)%3q#%#2,2%<X#bg!#0#$B+Zk& #$5,0# @f#K,2%<m#K#-9&;;&#%;V#2b)%#$)$3y&B8#%#$ ¢_,0#T! 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"#$%+ / #Rk#$?#%)$,>BeK3"6#."m"6#%:"6#%)%3 #%#TA,0#c3#$#%=3;0#1#$%+ + / #Ak#$P#%#$#%37&30&B *3"#%"Y"#$ %<# 8#.&32"#%)%3-#%#[3<Re*<63,0!3!,Y#1CB 336DE`%#$m)$#$l0)%#%3%_e)%#$l0)%#%3R)%#$3"63;m &3*3!UVU!3;K,0&#T3 #NBa#.#hU&#$c&# `%#$+ / #TBP[#%&UV#$<N=7;!AB@[7" + H @A#1# 8A#c)%,0#$5b)%3&=;V&#h&B L 1+ 63)%#*T"6#%)%32#%#A[*Ba3)$3b"6#$F3#."KUV#$8303#$#%3< ")$#1#\&e,0#A")$#1`%&30&B *)%33!P&)%# V@8#[).3 )%,0#0-k6#$-7&3=B,2&3G+:SE-63h6R&R# k#$C#%6#%#%37&3RB*"6#%)%3-#$#_@AY3"6#."h"#%6 &m,0#xUV#1<3#$#%=3;p#$#%y !0Yr+ / #%# #$U&3?#R")%#%"m3N#cB.@A3;2#%)$3 + 3.2 A Brief Review of the Fourier Basis 83"#1[#[Ba3)$3b&)%#*UV#18#\#$8Bi1DE 8#.&3 B#.&6#8UV#$)$%+ / #_k6#1C&G#$H&G3iG)$#_ )$,0#."hB HiB3)$3%Ba&C#P,0#e#%3;\#$Ci)%3D "6#$e3<R"6)1#$# 8#.&32k6#$P&%+Cs_&)10k#$P B3)$3:\"#$F3#."N !T +e^#$ # T3 " y# 3&<N=3;\&BP#%3;& +PSL39#$[@f&7" 1 T&3! 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SL#RRDe&;# Number of coefficients in the entire spectrum and sufficient spectrum subset 2500 Total number of coefficients Coefficient subset retaining 99% energy Number of coefficients 2000 1500 1000 500 0 4. EFFICIENT TRANSMISSION OF DECISION TREES K#%)$3q#%&-#b#15#1,0#$3!7&_#%-K"6#%,036D / =7#Y#-#%3#1Fc&Bf3;N#Yk6#$h&cBT#%6#%#%3D 3;4"#%)%3#$#%N3^,0#Z"&7x,033;q&).3%+ SE 3#%0#9=7&;#X3"u)%,0,Y3).&3p)%=N&Bc#m)%3!UV#%36D 3i#%3#%,-#c&Be"#%)%3:#%#$?&3"9)%,0#%AA@A9 &Be;;#%;&#."9#%3#%,Y#c3m#Tk#$A#%6#%#%37&3G+ / #ck#$[#$)$,BHh#%#A#$#%)$8#*#$#%f&BG# 3"6#$<3;bB3)13G+ / #-3h)$I#."x@Ay;3BD ).&3h)%#$l0)%#%3 a@Ax#$IUV#%<XI;#0,2&;3"# AI"6#%3B< #Y"6#$#%3*#$?BeBa#.#%?&*=3;<:3#$7)$*@A #?6#.")$#%"0B#.&6#+eQo@f#$;#."6DL.UV#$7&;#*#$3#%,-#?&B#%#% 3h&;;#$;V&#%"qk6#1-#$)$,KDrBa&, #%RhT# ,0=c3#%3)%3;0#$*BPBa#%&#$T.UV#$7;#.":UV#$T&H#T#%#%%+ !3)%#P# w w 3#8=<6=#%,;#%3#$7&#%H#%#P#%#%GBI,"#$D #$3!c"72)1!*#$U#."Z&T"6#$#%3*,0#%% #Y&;;&#%;V#." #$)$, "#$3!F#%c#K36#$3)%3;N#$TB[B#.&6#%h&U#$ #1!"uBT,0#+ / #9#%#1DL#$3#%,-#%0Ba&9"6#1#%32=)1! #$3;3;0Y#T&,0#T#%)$ #+ ;+8#%,0)%3")1\3"=< )%3Zb#R;;&#%;V#."9Ba&*F3"3;Y\#h,0=?36#$3)%3; #$\BCB#.&6#%?)$?#*#%)$.+_#h"6K3&*3#%)%#%< .UV#0X#0#2@f#%;#."q.UV#17;#N)1#%,0#+:y#b)%34,0< )$30#m3!,-#$Y&BT;3F).32&32&T==K#m# ,2&;3"#?BH#c)%#$l0)$#$3!A3=#%"N&BH#*;3#."bU&#%[&B #T)%#$l0)$#$3!%+_Sn3NA#1\@8#c#%A#%\&\,0< .UV#17;#T#c)%#$l0)$#$3!%+ / #?#15#1,0#$3!C#\h=#%,B c&"gb.vvT=)1Y"&7!+eQf #$UV#$<:,0#Y3#$UC#Y"&7N)%#%)$3y,0!"#-;V&#$0.vv "6#$#%3f.@A[BaT%vv-"#$#%3[)%,0&3#%%+POT7-[)%#%)$#%" #$UV#$<XFUV#0,03!#%%+9kR#$#0#$56#$,0#%3h@8#2#." m366D ,0#1)RBa#.#-U&#%%+ / #%#-B#.&6#%h&#-#$DE)$#%#."X3" "6)$#$`%#."q&#."3x#2#$)%#%37&;#%RB?"#$#$3)%#2#$L@f#%#%3 L@f0)%3#%)$UV#T3=7&3)%#%%+fSLBH#T#$)%#%37;#hBe"#$#$3)%#T ;&#.c&3Z2)$#$73:#%" #TBa#.#RU&#R?#$* !S* TOcO¡sP56&7&3%+ 5 4 Number 2 x 10 10 15 20 Number of trees 25 30 35 40 of Bytes needed to send Ensemble of Decision Trees to PDA using low Bandwidth Trees Fourier spectrum 1.8 1.6 1.4 Number of Bytes kH;# 6h6)$#%#$3y.@A3;m36#%3)%#-B_#K)%3CBa#.#%%+ / [3#$Ba)%#*f#*)%#$lK)%#%3[Bi#ck#$?!#%)$, &B*#9"#$)%3p#$#m#%3#%,Y#+ps_&)1p)%#%A)%#$3"6Yx 3g#X)%#$l0)$#$3!X&3"#x)%#%Z&#x)%DE)%!"6#." #."3 #%8,2&;3"#%%+CseUV#1<Y)%#$)%#%3"6_hc3g!#[#$ &BB#.&6#%%+ _;#$P)$#%C)$#%3"R\3#%3)%3;[Ba#.#%%+ / #T, @A3".@ =[#$#cBa#.#%%+ 0 1.2 1 0.8 0.6 0.4 0.2 0 0 5 10 15 20 Number of trees 25 30 35 40 kH;6#c / P¢_&32B#f&73!,-#$eB )%#$lK)%#%3 3";3F).3-)%#$l0)%#%3K3#2k6#1K#%)$,9+ 8&D , e<6#*`$#R&BH#c#$#c#%3#$,Y#T&3"mA#%)$,9+ 3# #1@A#TK`$#$+ k&8_#$56#$,0#%3. @f#\)$#.#c&3b#$3#%,-#ABG"#%)$3b#%#$ &BI#$ b"7b"&#$%+ / #Y#$56#$,0#%3*&#Y#1Ba,0#%"X=D 3;K#XL)%,0#$A#%)73;&<9#%)1DE=)7!*39#hc&"g .vvN3"6#$5+ / #-#%)$&h3)%"6#% vN)%,03#%%+T#R,2#." #.&)1Y"#%)%3-#%#f*C)%&#%3"3;hk#$P#%)1, &3" ,0#.&#."2#*B@A3;N#%,0% #8&76`$#fB&R#[;;#%;&#."0k#$P#$)$, / 3"0#\#$[&Bi#?#%)$,f"[,0=fBG# ;3F)%3\)%#$l0)%#%3%+ / #\36,Y#$_BG<!#%e#%g!#."Kh#$#%#%3_#?k6#1 #%)$, 3"b#c&;3i#%3#%,-#+ / #K,0#K#.g#."xm#%3"x#2k6#$Y#$)$,j&3" #c&;3i#%3#%,-#*YY,0#T)%#%3.+ / #Z#$56#$,0#%3b&#Z)%3"6)$#."3&7"#$NF3"u6m.@ #Ak#$_#%)$,KDE#%"Y)70).#%_K)%,0#."R #[#%;&f#%3#%,-#$DE&#."0)728#\3!,Y#$eB#%#$ 3)$#%#%%+ Sn3-7"6#$Pc"#%3B<R#f#$P&B#f#$)$,¡&P).&#$ #e,0=G;3F).3C)$#$l0)%#%3H3h#.)7R#%3#%,-# .@8#_&H# ¢_,0#T! SL#RRDe&;#R 7 12 v03%+ / #R;7Z3").#%*?@8#Y&9)7#%U#-2;3BID ).3R#.")$33y7&3,03,0#K@Ay#2k#$R#%6D #%#%373G+ / #T&,0#c#$A&BC#$56#$,0#%3fA)%3")1#."NUV#$ 0@¡3"6@A"6 T A"DE:)%33#%)$3 + / #R#% �#%&#."34kH;#bt 8, 1+ / #bk#$-#%)$,KD &#."R6V&)1R#.&G\#$B,#C#%;IP#%3#$,Y#$D )723"R#A#%3#1Fe_,0&#[33)%#."-#%).#AB# .@3"!@A"6G+ Response Time to send the ensemble to PDA using Wireless connection x 10 Trees Fourier spectrum Response Time in Nanoseconds 10 8 6 5. 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E.DL 1.!& ! !+ Acknowledgments -+?#%3 6#%3)%#$AP+ &3"bMC+6Oc,03;%+ w )13;3;x"&7Z=#.&,0%+PSnW 3 S,={ 77 -}~ :{ 7~ L ,7~ }r{&~ Pe{ ~ . ,1 ~ 7K{X ~ CT~ { - YzZ}a~}a~ &3:k7&3)%)%6 fQR vv6+Q\ / #06&h)763.@A#%";#0&*B,W# ?3#."x!7#% *&3f6)%#%3)%#2k3"&34fQ *ses %@[7"ySSDnvv & &3" / sPOh w <6I&3" / #$)13;<O*#%UV#%,0#%3b8#%3#$.+ / #A6C@8"KV#f*3-!#$ w #$)7&3CBa_P#$ 3:"6#%UV#%3;Y#c=<6=#%,9+ 6. 1hQR+_Q\`%C+R, h_{,H} 0,7}Ei{ , }a~ o{ _}a~ ~ $} z ,V+^#$< *#$@_ + .T-+ 8-3" w +6 T`%!+Q\323#%;#%3[B#%).&=3;K=<6=D #%, B\=)7)%#b3;Z3#%7&83#1n@f&!%+CSn3F,{7- }a~ 9{ "! # } 0{,!cz ,%$ ~- f;#% & G\Q?,0% G V!+S=ses_suMP#$%+ he+ _#$,2&3G+*MC=3;o#%9;#$#1XBX#%")$3 3 &;#-"&7R#$\3"b36DL3#+ / #%)13).& #%&. 7&=)% Oc#%&,0#%3. *3U#$n<RBifBa&3R& 8#$V#%#$< V!+ he+ _#%,2&3G ('+G-+ik#%"6,23G h+HQh+ #$3G C&3"y?+)'+ !3#+* } +, }{~"~-.-A ,}r{~/ , +Vq"=@f&G 8#%,03!. fQR t + .he+ _#%,2&3G+*MC=3;,2&-UV&#%:Ba&x)$I&F).33 &;#9"7#%Y3"3DE3#+Pz 0%1!}a~32H ,7~}a~ _ =%& 1 t &%v! C 6+ 4'+6f&,0#% !Qh+G6 !3"0QR+ w )% T3#$<+51677{&~{ 08 ,78} 9K{ ._}a~ & ~ $} Gz ,V +iMP3)%#$3 *3UV#$n<9MP#%% T6QR V+ .R+88#%3;6+fQ3#%67\3#$L@f&u&6V)7uB2Ba&#%).&=3; 3"93<6`%3;K#c)%#$DEUV,0#*#%3:3m#c7D @[&3:=)1N,2&V#1.+ w &=#$.d ?#$% c&3 '.@[D / 3; *3UV#$n< / &@f3 h+ + ? + thMH+\Oc,03;:3"¡-+\*#%3G+ w 33;o;DE#%#." "&7 =#.&,0%+Sn: 3 F,{ 7 -}a~ Y{ ;=} < >1?;iz@%BADC 7~L,9 ~ }r{~ Ee{~ . ,1 ~ 7T{F ~ CT~ { - }>9{,%$ &~ zZ}a~}a~ 8=3 w QR Q?;=. &vvv!+ c¡+!k3G !+!Ba6 63"G'+IH3;+ / #?)%&32BG"6D =fBa&A"=6#." !)%#*3"23DE3#\#%&33;+!Sn3 F,{ 7' -&}a~ *{ D_} >1;?;iJ z BADC 7~ L ,7~ }r{~ e{ ~ . ,1 ~ 7R{&F ~ Ch~ { - } {,%$ ~ - RzZ}a~}a~ !3 Oc#%; f&B3I! C 6+ !S* TOcO¡sP56&7&3%+ 1;'+e*#%6V# P¢-+Cc3 R+ *&,23&3G e&3"y¡+HG + Q / ] ,0=)*"6#%)%32#%#?)$3=)$3 +!Sn3KS,={ 1 -}a~ R{ L%BA_N z M !E?;izZ 6&;#%h O&.tv! H !+ .;'+P*,Y#1; P K+C T& e-+ w &33! P'+ / 3,2! 3" / UV3#%3 + / ,0#q#$#%y#$;,0#%37&3¡Bax)%3!#156 #%)%;333,0#o"6#%U!)$#%%+hSnQ 3 F,{ 7' -&}a~ o{ >1 R6D6S6 7 ~ L ,1~ }r{~ Se{&~ . ,1 ~ 7-{~ -zZ}a~}a~ !;#$ v&6.v6 G&vv!+ .T¡+:*#1 "3;6+ZMP&L< 3#.g#$Ba& ,0B 3"#."7&3", U&#%%+T!{B$,7~ -{ >1:?U 2,7}8 ~ } 8} V?L1{ $} }r{&~ &t6.&!v6 C !+ 33;-,0#$D >1 1~>1 }7{ ,$ ~ w MP#%%+ .RQR+*'V&3x3" h+Oc#%%+? V{,7} >1Y T %{,T Y L,1}a~ 1- + MP3)%#Tc& G tt6+ REFERENCES --+Y'V3; 6k8+! &3" / +!MC3;6+!Sn3#%;#%3f=)7-7"3; "#%)%3xh=<6=#%, 3;9"6&P"&UV#$DE=)$# 3#%67 3#$L@f!%5 + ! { ,1~ H{ 7~ %{,% }{~X$}E1~1 6[~ } ~ ,1}~ ! !% &6 V! C 6+ .h-+[ h;6743"\+\MC&+ w 33;4,0#$DE)$).T"&7 =#.,>3;-#Tk6#$A#%)$, BP"6#%)%3b#%#%%+Sn3 S,={ 1 -}a~ Z{ >1 R6S6D6 7~ L ,7~ }{~ 4e{~ .,1~1Z{~ YzZ}a~}a~ 6&;#%*t! &!tt! 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