DeepGBM 論文の紹介

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!IPUP w ͪΎΒσʔλͷਓͰ͢

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֓ཁ w ΦϯϥΠϯ༧ଌλεΫͰ͸ɺҎԼͷ̎ͭͷ՝୊Λಉ࣌ʹղܾ͢Δ͜ͱ͕೉͍͠ w ΧςΰϦσʔλͱ࿈ଓσʔλΛಉ࣌ʹ͏·͘ѻ͑ͳ͍ w ࣌ؒͱͱ΋ʹ෼෍͕มԽ͢Δσʔλʹରͯ͠͏·͘ϞσϧΛߋ৽Ͱ͖ͳ͍ w (#%5ͱ//͸ۙ೥Α͘࢖ΘΕΔϞσϧ͕ͩɺͦΕͧΕʹऑ఺͕͋Δ w
͜ͷ࿦จͰ͸ɺ(#%5ͱ//ΛৠཹʹΑͬͯ૊Έ߹ΘͤΔ͜ͱͰɺ  ΦϯϥΠϯ༧ଌλεΫΛޮՌతʹղ͘ϑϨʔϜϫʔΫ%FFQ(#.ΛఏҊ͢Δ w ༷ʑͳσʔληοτͰ࣮ݧΛߦͳ͕ͬͨɺ͢΂ͯͷσʔληοτͰଞͷ  ͋ΒΏΔख๏ΑΓ΋ੑೳ͕͍͍

*OUSPEVDUJPO

ΦϯϥΠϯ༧ଌͱ͸ w ࠷৽ͷσʔλΛ༻͍ͯ༧ଌϞσϧΛվળ͠ଓ͚ΔΑ͏ͳ໰୊ w ΦϯϥΠϯ༧ଌλεΫͷྫ w ޿ࠂͷΫϦοΫ༧ଌ w 8FCίϯςϯπϥϯΩϯά w
Ϩίϝϯυ w ഑ૹܭըͷ࣌ؒਪఆ

(#%5ͱ͸ w (#%5(SBEJFOU#PPTUJOH%FDJTJPO5SFF w ऑֶशثʹܾఆ໦Λ༻͍ͨޯ഑ϒʔεςΟϯάͷ૯শ w 9(#PPTU΍-JHIU(#.΋(#%5ͷҰछ w ,BHHMFͰΑ͘࢖Θ͍ͯΔྲྀߦΓͷΞϧΰϦζϜ

(#%5ͱΦϯϥΠϯ༧ଌ w ར఺ w ߴີ౓ͳ਺஋σʔλΛޮՌతʹѻ͑Δ w JOGPSNBUJPOHBJO͕࠷େͱͳΔಛ௃Λ܁Γฦ͠બ୒Ͱ͖ΔͨΊ w ܽ఺ w
ΦϯϥΠϯͰϞσϧΛߋ৽͢Δ͜ͱ͕ࠔ೉ w ֶश͞ΕͨπϦʔ͕ඍ෼ՄೳͰ͸ͳ͍ͨΊ w ·ͨɺʮϞσϧߋ৽͕Ͱ͖ͳ͍ʯͱ͍͏͜ͱ͸ʮຖճֶश͠௚͞ͳ͚Ε͹͍͚ͳ͍ʯ  ͱ͍͏͜ͱͰ͋Γɺ͜Ε͸େن໛σʔλΛ༻ֶ͍ͨश͕ࠔ೉Ͱ͋Δ͜ͱΛҙຯ͢Δ  େن໛σʔλΛҰ౓ʹϝϞϦʹࡌͤΔ͜ͱ͸ݱ࣮తͰͳ͍ w ΧςΰϦσʔλͷֶश͕ۤख w ಛʹɺεύʔεͳΧςΰϦσʔλͷPOFIPUදݱΛೖྗͨ͠৔߹͸JOGPSNBUJPOHBJO͕  ඇৗʹখ͘͞ͳΔͨΊɺͦͷಛ௃ྔΛ༻ֶ͍ͯशͯ͠΋΄ͱΜͲͷ৔߹ޮՌ͕ͳ͍ɺ  ͦͷͨΊεύʔεͳΧςΰϦσʔλͰ͸πϦʔΛޮՌతʹ੒௕ͤ͞Δ͜ͱ͕Ͱ͖ͳ͍

//ͱ͸ w ///FVSBM/FUXPSL w ͨͿΜશһ஌͍ͬͯΔͱࢥ͏ͷͰׂѪ w ,BHHMFͰ࢖ΘΕ͍ͯΔྲྀߦΓͷΞϧΰϦζϜ

//ͱΦϯϥΠϯ༧ଌ w ར఺ w େن໛σʔλͰ΋ޮ཰తͳΦϯϥΠϯֶश͕Մೳ w όον୯ҐͷCBDLQSPQBHBUJPOʹΑΔ w εύʔεͳΧςΰϦσʔλͷಛ௃Λֶश͢Δ͜ͱ͕Մೳ w
ܽ఺ w ߴີ౓ͳ਺஋σʔλͷֶश͕ࠔ೉ w શ݁߹ωοτϫʔΫ '$// Ͱ͸ہॴղʹؕΓ΍͘͢ɺे෼ͳੑೳ͕ग़ͳ͍

ΦϯϥΠϯ༧ଌͷख๏·ͱΊ w (#%5ܥ͸ʮΦϯϥΠϯߋ৽͕ࠔ೉ʯʮΧςΰϦσʔλͷֶश͕ۤखʯ  ͱ͍͏̎ͭͷऑ఺ʹΑΓɺΦϯϥΠϯ༧ଌλεΫͰ͸͍͍ࣦͩͨഊ͢Δ w //ܥ͸ΦϯϥΠϯߋ৽ʹ͸޲͍͍ͯΔ͕ɺʮີͳ਺஋σʔλΛѻ͑ͳ͍ʯ  ͱ͍͏ऑ఺͕ղܾͰ͖ͳ͍ ͜ͷ࿦จͰ͸ɺ(#%5ͱ//Λ౷߹ͯ͠ޮՌతʹΦϯϥΠϯ༧ଌ໰୊Λ  ղ͘ϑϨʔϜϫʔΫ%FFQ(#.ΛఏҊ͢Δ

3FMBUFE8PSL

(#%5ΛΦϯϥΠϯ༧ଌ΁ద༻͢Δख๏ w 9(#PPTU΍-JHIU(#.Ͱ΋ΦϯϥΠϯߋ৽͢Δख๏͸  ఏڙ͞Ε͍ͯΔ͕ɺύϑΥʔϚϯε͸ྑ͘ͳ͍͠ੑೳ΋ෆ҆ఆ w ΧςΰϦσʔλΛ͏·͘ѻ͏ख๏΋͍͔ͭ͋͘Δ͕ɺ  ৘ใଛࣦ͕ൃੜͨ͠ΓɺΦϯϥΠϯ༧ଌ΁ͷద༻͕ࠔ೉ͱ͍͏  ΋͏Ұํͷ໰୊͕ղܾͰ͖ͳ͍

//ΛΦϯϥΠϯ༧ଌ΁ద༻͢Δख๏ w ΦϯϥΠϯ༧ଌͰ//Λར༻͢Δࣄྫ͸΄ͱΜͲ͕ΧςΰϦσʔλΛ  ѻ͓ͬͯΓɺ਺஋σʔλͷऑ఺͕ղܾͰ͖͍ͯͳ͍ w ਺஋σʔλΛOPSNBMJ[BUJPOͱSFHVMBSJ[BUJPO͢Δख๏͸͋Δ͕ɺ  (#%5ͷੑೳΛ্ճΔ͜ͱ͕Ͱ͖͍ͯͳ͍ w ਺஋σʔλͷ཭ࢄԽ EJTDSFUJ[BUJPO
͸޿͘࢖ΘΕ͍ͯΔख๏͕ͩɺ  Ϟσϧͷෳࡶ͕͞૿ͯ͠աֶशΛҾ͖ىͯ͜͠͠·͍͕ͪ

(#%5ͱ//Λ૊Έ߹ΘͤΔख๏ w //ʹπϦʔͷΑ͏ͳܾఆೳྗΛಋೖ͢Δݚڀ͕͍͔ͭ͋͘Δ w ྫ͑͹(PPH-F/FUʹ͸πϦʔͷΑ͏ͳܾఆೳྗ͕͋Δ͜ͱ͕஌ΒΕ͍ͯΔ w $7෼໺͹͔ΓͰΦϯϥΠϯ༧ଌʹద༻ͨ͠ࣄྫ͸ͳ͍ w ֶशࡁΈπϦʔϞσϧΛ//ʹม׵͢Δઌߦݚڀ΋͋Δ w
ඇޮ཰͔ͭϞσϧ͕ංେԽ͢ΔͷͰݱ࣮తͰ͸ͳ͍ w (#%5ͱ//ͷΞϯαϯϒϧΛࢼΈͨݚڀ΋͍͔ͭ͋͘Δ w 'BDFCPPL ϩδεςΟοΫճؼΛ༻͍ͯϦʔϑΠϯσοΫεΛ༧ଌ͢Δ w .JDSPTPGU (#%5Ͱ//ͷޡࠩΛิਖ਼͢Δ w ͍ͣΕ΋ΦϯϥΠϯߋ৽͕Ͱ͖ͳ͍໰୊͕ղܾ͞Ε͍ͯͳ͍

%FFQ(#.

%FFQ(#.֓ཁ %FFQ(#.͸$BU//ͱ(#%5//ͱ͍͏̎ͭͷίϯϙʔωϯτ͔Β੒Δ

$BU// w ΧςΰϦσʔλΛ&NCFEEJOHදݱΛ༻͍ͯີͳϕΫτϧʹม׵͢Δ w ΦϯϥΠϯ༧ଌͰΧςΰϦσʔλʹ//Λద༻͢Δઌߦݚڀ͸ଟ͋͘Γ  8JEFˍ%FFQ 1// %FFQ'. Y%FFQ'. ͳͲ
ɺ%FFQ(#.Ͱ͸  طଘͷ͏·͍͍ͬͯ͘Δߏ଄Λͦͷ··׆༻ͯ͠$BU//ͱͯ͠ར༻͍ͯ͠Δ w ͜ͷ࿦จͷ$BU//Ͱ͸ઌߦݚڀΛ׆༻֤ͯ͠ಛ௃ྔؒͷ૬ޓ࡞༻΋  ֶश͢Δ͕ɺͦΕ͸ඞͣ͠΋ඞཁͰ͸ͳ͍ w $BU//͸ଞͷಉ༷ͷػೳΛ࣋ͭ//ίϯϙʔωϯτͰ΋୅༻͢Δ͜ͱ͕Ͱ͖Δ

(#%5// w ֶशࡁΈ(#%5ϞσϧΛʮৠཹʯ͢Δ͜ͱͰ//Ϟσϧʹม׵͢Δ w Ξϓϩʔνͷखॱͱͯ͠͸ ·ͣ୯ҰπϦʔΛৠཹͯ͠//ʹల։͢Δख๏Λߟ͑Δ ࣍ʹͦΕΛෳ਺πϦʔʹ΋ద༻Ͱ͖ΔΑ͏ʹҰൠԽ͢Δ

ิ଍ɿʮৠཹʯͱ͸ ͋ΔϞσϧͷ஌ࣝΛଞͷϞσϧʹܧঝͤ͞ΔͨΊͷૢ࡞ͷ͜ͱ %FFQ-FBSOJOHʹ͓͚Δ஌ࣝͷৠཹc$PEF$SBGU)PVTFIUUQDPEFDSBGUIPVTFKQQLOPXMFEHFEJTUJMMBUJPOΑΓҾ༻ Ϟσϧͷਫ਼౓ͱܭࢉίετ͸τϨʔυΦϑͷؔ܎͕͋Δ ڭࢣϞσϧͷ஌ࣝΛੜెϞσϧʹ༩͑Δ͜ͱͰɺτϨʔυΦϑΛվળͰ͖Δ

୯ҰͷπϦʔͷৠཹ w ઌߦݚڀͷৠཹͷ΄ͱΜͲ͸ɺϞσϧͷग़ྗͷΈΛసૹ͢Δ w ৠཹલͱޙͷϞσϧ͕ಉ༷ͷग़ྗΛੜ੒͢Δ͜ͱΛอূ͢ΔͨΊ w ͔͠͠πϦʔͱ//͸ຊ࣭తʹҟͳΔͨΊɺৠཹͰ͖Δ஌ࣝΑΓ΋  ଟ͘ͷ஌͕ࣝπϦʔʹ࢒͞Ε͍ͯΔ w
۩ମతʹ͸ʮπϦʔ͕બ୒ͨ͠ಛ௃ྔʯͱʮπϦʔͷߏ଄ʯ͸  ॏཁͳ஌ࣝͱͳΓ͏Δ

୯ҰͷπϦʔͷৠཹ w πϦʔ͕બ୒ͨ͠ಛ௃ྔ 5SFF4FMFDUFE'FBUVSFT w πϦʔ͸͢΂ͯͷಛ௃ྔΛ࢖͏Θ͚Ͱ͸ͳ͍ w ͦͷ஌ࣝΛసૹͯ͠//ͷֶशޮ཰Λ޲্Ͱ͖Δ
w ۩ମతʹ͸ʮπϦʔ͕બ୒ͨ͠ಛ௃ྔΛ//ͷೖྗʹ͢Δʯ͚ͩ w πϦʔͷߏ଄ %BUB1BSUJUJPO w πϦʔͷߏ଄͕͍࣋ͬͯΔ஌ࣝ͸ɺσʔλΛҰͭͷ༿ʹ෼ׂ͢Δํ๏Λࣔ͢ w ͜ͷߏ଄Λ//ʹసૹ͢Δͷ͸؆୯ͳ͜ͱͰ͸ͳ͍ɺຊ࣭తʹߏ଄͕ҟͳΔ w //͸೚ҙͷؔ਺Λۙࣅ͢Δ͜ͱೳྗ͕ڧྗͰ͋Δ͜ͱ͕஌ΒΕ͍ͯΔͷͰɺ  ʮ//ͰπϦʔͷߏ଄Λۙࣅ͢Δʯ͜ͱͰߏ଄ͷ஌ࣝΛநग़͢Δ

୯ҰͷπϦʔͷৠཹ

ෳ਺ͷπϦʔͷৠཹ w 50%0

ෳ਺ͷπϦʔͷৠཹ

%FFQ(#.ͷֶशํ๏ ΦϑϥΠϯ w 50%0

%FFQ(#.ͷֶशํ๏ ΦϯϥΠϯ w 50%0

&YQFSJNFOU

࣮ݧʹ࢖͏σʔληοτ w ͍͔ͭ͘ͷެ։σʔληοτΛ࢖͏ w ඈߦػͷ஗Ԇ༗ແΛ༧ଌ͢ΔͨΊͷߤۭձࣾͷσʔληοτ w ͍͔ͭ͘ͷ,BHHMFίϯϖͷσʔληοτ w /FVS*14ͷ"VUP.-ͷͨΊͷσʔληοτ w
͜ΕΒͷσʔληοτ͸͢΂ͯҎԼͷΑ͏ͳಛ௃͕͋Δ w ΧςΰϦͱ਺஋ͷ྆ํͷσʔλؚ͕·Ε͍ͯΔ w λΠϜελϯϓؚ͕·Ε͍ͯΔ ΦϯϥΠϯ༧ଌΛγϛϡϨʔτͰ͖Δ

ൺֱର৅ͷϞσϧ w (#%5 -JHIU(#. w -3 ϩδεςΟοΫճؼ
w '. 'BDUPSJ[BUJPO.BDIJOFT w 8JEF%FFQ ઢܗϞσϧ %// w %FFQ'. w 1// 1SPEVDUCBTFE/FVSBM/FUXPSLT

ൺֱର৅ͷϞσϧ ͞Βʹɺ%FFQ(#.Λগ͠มߋͨ̎ͭ͠ͷϞσϧ΋ൺֱର৅ʹՃ͑Δ w %(#%5//Ͱ͸ͳ͘(#%5Λ௚઀࢖͏%FFQ(#. w (#%5͸ΦϯϥΠϯߋ৽Ͱ͖ͳ͍ͷͰɺ%FFQ(#.͕  ΦϯϥΠϯߋ৽͕Ͱ͖Δ͜ͱΛࣔͨ͢Ίͷൺֱର৅ w %$BU//ͳ͠Ͱ(#%5//ͷΈΛ࢖͏%FFQ#(.
w (#%5//୯ମͷੑೳΛࣔͨ͢Ίͷൺֱର৅

࣮ݧͷઃఆ w ਺஋σʔλΛ͏·͘ѻ͑ͳ͍Ϟσϧ -3 '. 8JEFˍ%FFQ %FFQ'. 1//ͳͲ Ͱ͸ɺ  ཭ࢄԽͨ͠ΧςΰϦσʔλΛೖྗ͢Δ͜ͱͱ͢Δ
w ΧςΰϦσʔλΛ͏·͘ѻ͑ͳ͍Ϟσϧ (#%5ͳͲ Ͱ͸ɺ  ϥϕϧΤϯίʔυ΍όΠφϦΤϯίʔυΛߦͬͨ਺஋σʔλΛೖྗ͢Δ͜ͱͱ͢Δ w ͢΂ͯͷ࣮ݧ͸ҟͳΔཚ਺γʔυͰ̑ճ࣮ߦ͞ΕΔ   ˞ϋΠύʔύϥϝʔλઃఆΛؚΉ࣮ݧͷৄࡉ͸࿦จͷ෇࿥͓Αͼίʔυ (JU)VC ʹهࡌ͞Ε͍ͯΔ

࣮ݧ݁ՌɿΦϑϥΠϯ༧ଌͷੑೳ w (#%5͸ଞͷ//ͷϕʔεϥΠϯΑΓ༏Ε͍ͯΔˠ(#%5ͷ஌ࣝΛҾ͖ग़͢Ξϓϩʔν͸༗ӹͰ͋Δ w % (#%5// ͸(#%5ΛվળͰ͖͍ͯΔˠֶशࡁΈ(#%5ϞσϧΛޮՌతʹৠཹͰ͖͍ͯΔ w (#%5ͱ//ͷ૊Έ߹Θͤ͸ੑೳ޲্ʹߩݙ͢ΔˠΧςΰϦͱ਺஋ͷ྆ํΛॲཧ͢Δ͜ͱ͕Ͱ͖͍ͯΔ w
%FFQ(#.͸͢΂ͯͷσʔληοτͷ͢΂ͯͷϕʔεϥΠϯΑΓ༏Ε͍ͯΔ ʲදʳΫϥε෼ྨͰ͸"6$ ճؼͰ͸.4&Λهࡌ͍ͯ͠Δ

࣮ݧ݁ՌɿΦϯϥΠϯ༧ଌͷੑೳ w (#%5͸࠷ॳͷόον͚ͩ͸ੑೳ͕͍͍͕Ҏ߱͸ѱ͍ˠ(#%5͸ΦϯϥΠϯͰ͸ػೳ͠ͳ͍ w (#%5//ͷΦϯϥΠϯͷੑೳ͸ྑ͍ˠ(#%5ͷৠཹ//Ϟσϧ͕͏·͘Ͱ͖͍ͯΔ w %FFQ(#.͸͢΂ͯͷϕʔεϥΠϯΑΓ΋ੑೳ͕͍͍ ʲਤʳΦϯϥΠϯ༧ଌͷ࠷ॳͷόον෼ͷ"6$ͷฏۉΛϓϩοτͨ͠΋ͷ

$PODMVTJPO

·ͱΊ ֓ཁΛ࠶ܝ w ΦϯϥΠϯ༧ଌλεΫͰ͸ɺҎԼͷ̎ͭͷ՝୊Λಉ࣌ʹղܾ͢Δ͜ͱ͕೉͍͠ w ΧςΰϦσʔλͱ࿈ଓσʔλΛಉ࣌ʹ͏·͘ѻ͑ͳ͍ w ࣌ؒͱͱ΋ʹ෼෍͕มԽ͢Δσʔλʹରͯ͠͏·͘ϞσϧΛߋ৽Ͱ͖ͳ͍ w (#%5ͱ//͸ۙ೥Α͘࢖ΘΕΔϞσϧ͕ͩɺͦΕͧΕʹऑ఺͕͋Δ
w ͜ͷ࿦จͰ͸ɺ(#%5ͱ//ΛৠཹʹΑͬͯ૊Έ߹ΘͤΔ͜ͱͰɺ  ΦϯϥΠϯ༧ଌλεΫΛޮՌతʹղ͘ϑϨʔϜϫʔΫ%FFQ(#.ΛఏҊ͢Δ w ༷ʑͳσʔληοτͰ࣮ݧΛߦͳ͕ͬͨɺ͢΂ͯͷσʔληοτͰଞͷ  ͋ΒΏΔख๏ΑΓ΋ੑೳ͕͍͍

DeepGBM 論文の紹介

DeepGBM 論文の紹介

Yuki Ishikawa

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%FFQ(#. "%FFQ-FBSOJOH'SBNFXPSL%JTUJMMFECZ(#%5GPS0OMJOF1SFEJDUJPO5BTLT ,%%࿦จಡΈձ !IPUP

!IPUP w ͪΎΒσʔλͷਓͰ͢

঺հ͢Δ࿦จ w %FFQ(#."%FFQ-FBSOJOH'SBNFXPSL%JTUJMMFECZ(#%5GPS0OMJOF1SFEJDUJPO5BTLT w 1%'IUUQTXXXLEEPSHLEEBDDFQUFEQBQFSTWJFXEFFQHCNBEFFQMFBSOJOH GSBNFXPSLEJTUJMMFECZHCEUGPSPOMJOFQSFEJDUJPOU w ಈըIUUQTXXXZPVUVCFDPNXBUDI W6[9/[8T1X w

֓ཁ w ΦϯϥΠϯ༧ଌλεΫͰ͸ɺҎԼͷ̎ͭͷ՝୊Λಉ࣌ʹղܾ͢Δ͜ͱ͕೉͍͠ w ΧςΰϦσʔλͱ࿈ଓσʔλΛಉ࣌ʹ͏·͘ѻ͑ͳ͍ w ࣌ؒͱͱ΋ʹ෼෍͕มԽ͢Δσʔλʹରͯ͠͏·͘ϞσϧΛߋ৽Ͱ͖ͳ͍ w (#%5ͱ//͸ۙ೥Α͘࢖ΘΕΔϞσϧ͕ͩɺͦΕͧΕʹऑ఺͕͋Δ w

*OUSPEVDUJPO

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