kaggler-ja driven learning | Kaggle Tokyo Meetup #5

by Shotaro Ishihara

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LBHHMFSKBESJWFOMFBSOJOH ͳ࣭ͥ໰ʹ౴͑ɺ Ͳ͏ֶΜͰ͍Δ͔ ,BHHMF5PLZP.FFUVQ -JHIUOJOH5BML %FDTU V !VQVSB

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V !VQVSB l ๭اۀͰӦۀɾϚʔέςΟϯά޲͚ ͷσʔλ෼ੳˍ։ൃ l ,BHHMF&YQFSU l ໺ٿϋοΧιϯʢΤϯδχΞϦϯά෦໳ʣҐ l ݚڀ಺༰ɿ৘ใٕज़ͷࣾձ࣮૷ ü %FTJHO.FUIPEPG3FNPUF.POJUPSJOH4FSWJDFGPS &MEFSMZ$POTJEFSJOH$PNNVOJUZ$IBSBDUFSJTUJDT IUUQFCPPLTJPTQSFTTOMWPMVNFBSUJDMF

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ຊ೔ͳͥൃදʁ l ͸·ͩແ͍ɾɾɾ͚ΕͲ l LBHHMFSKBTMBDL UXJUUFS ͸ͯͳϒϩάͳͲͰ ੵۃతʹΞ΢τϓοτ͍ͯ͠Δ l ڧ͘ͳ͍ͱൃݴݖ͕ͳ͍ ˡؒҧ͍ l ॳ৺ऀ΋ؾܰʹࢀՃͰ͖Δʮ೔ຊͷσʔλ෼ੳ ίϛϡχςΟʯͰࡏΓଓ͚ͯ΄͍͠

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CFHJOOFSTIFMQͰͷ౤ߘ਺ l աڈϩάΛ#FBVUJGVM4PVQͰॲཧ l ूܭظؒɿ ೥݄೔ʙ݄೔ ʢॳΊͯ౤ߘ͔ͯ͠Βूܭʣ l ͪͳΈʹҐ͸ULN͞Μ

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5-%3 l LBHHMFSKB TMBDL XJLJ NFFUVQͳͲ ʹ͸ɺ ॳ৺ऀ΋ؾܰʹࢀՃͰ͖Δʮ೔ຊͷσʔλ෼ੳ ίϛϡχςΟʯͰࡏΓଓ͚ͯ΄͍͠ ü 4UFQ ࢀՃͯ͠ΈΑ͏ ü 4UFQ ࣭໰ͯ͠ΈΑ͏ ü 4UFQճ౴ͯ͠ΈΑ͏ -FU`TLBHHMFSKBESJWFOMFBSOJOH ಛʹTMBDLʹ͍ͭͯ

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ݴ͍͍ͨ͜ͱ͸Ҏ্ ͋ͱ͸֤4UFQʹ͍ͭͯ গ͠ࡉ͔͘Έ͍͖ͯ·͢

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গ͚ͩ͠༨ஊ ͳͥࢲ͕ʮ೔ຊͷσʔλ෼ੳ ίϛϡχςΟʯʹظ଴͢Δ͔

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σʔλ͸ʮਓͷຊ࣭ʯΛ๫͘ͱࢥ͏ l ড়౔फͷ͓ࣉͷ௕உͱͯ͠ੜ·ΕΔ l কདྷ͸ܧ͙ʜʜ͔΋ʁʁʁ l σʔλ෼ੳ͸ʮਓؒͷຊ࣭ʯʹܨ͕Δ ü ݸʑͷ෺ࣄͷʮ࠷దԽʯ͕ਐΜͰ͍͘ ü ෺ࣄ͕࠷దԽ͞Ε͍ͯͬͨઌʹɺԿ͕࢒Δͷ͔ ü ͋ΒΏΔ෼໺Ͱσʔλ׆༻͕ਐΜͰ΄͍͠ ü ͲΜͲΜ৽نࢀೖͯ͠΄͍͠ ü ਓจܥͷ஌ݟ͸ࠓޙҰ૚ॏཁʹͳ͍ͬͯ͘

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4UFQࢀՃͯ͠ΈΑ͏

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LBHHMFSKBTMBDL IUUQTLBHHMFSKBIFSPLVBQQDPN

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༗༻ͳDIBOOFM͕ͨ͘͞Μ l CFHJOOFSTIFMQʢॳ৺ऀ࣭໰෦԰ʣ l MFBEFSCPBSEMJWFʢ-#࣮گɺղ๏ڞ༗ʣ l LBHHMF@HFOFSBMʢίϯϖ৘ใʣ l SBOEPNʢࡶஊɺྫɿUFOTPSGMPXͷಡΈํʣ l CFHJOOFST@CPPUDBNQʢJODMBTTίϯϖ։࠵ʣ ͳͲ

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CFHJOOFSTIFMQ

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ࢀՃਓ਺ͷਪҠ 'SPN!ULN `TUXFFU

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ࢀՃਓ਺ͷਪҠʢਪఆʣ ग़యɿ૯຿ল౷ܭہ ਓޱਪܭ IUUQTXXXTUBUHPKQEBUBKJOTVJOFXIUNM ೥݄ ! = 0.012'( + 1.75' + 232

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ݟ͍ͯΔ͚ͩͰֶͼʹͳΔ l ೔ຊޠ͔ͩΒαϥοͱಡΊΔ l LBHHMFNBTUFSΒ͕஌ݟΛམͱ͍ͯ͠Δ l ࣮͸ʮ30.ઐʯͰ΋े෼ʢਓʣ l ελϯϓΛԡͦ͏

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4UFQ࣭໰ͯ͠ΈΑ͏

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࣭໰͢Δ࣌͋Δ͋Δ l ॳาతͳ࣭໰͗ͯ͢അࣛʹ͞Εͳ͍͔ʜʜʁ l ͜Μͳ͜ͱฉ͍ͯྑ͍ͷͩΖ͏͔ʜʜʁ l ୭ʹ΋൓Ԡ͞Εͳ͔ͬͨΒݏͩͳʜʜɻ

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৺഑͝ແ༻

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ʮ൓Ԡ͕ͳ͔ͬͨʯ৔߹ l ߴ౓ͳଞਓ͕औΓ૊ΜͰ͍ͳ͍಺༰ʁ ü ઌۦऀʹͳΕΔྖҬ͔΋ʂʁ ü ͋Δछͷࣗ৴ʹͳΔ l ࣭໰͕ཁྖΛಘ͍ͯͳ͍ʁ ü ʮྑ͍࣭໰ʯʹͳ͍ͬͯΔ͔ʁ ü ͬͪ͜͸஫ҙ

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ʮྑ͍࣭໰ʯͷͨΊʹ l l1MFBTFJODMVEFBNJOJNBMSFQSFYz ü SFQSPEVDJCMFFYBNQMFʢ࠶ݱՄೳͳ࣮ྫʣ ü ඞཁ࠷௿ݶͷ৘ใΛఏࣔ͢Δʢ༨෼Λ࡟Δʣ ü 3ίϛϡχςΟͰ࢖ΘΕ͍ͯΔ ü 3ͷύοέʔδ໊ IUUQTHJUIVCDPNUJEZWFSTFSFQSFY

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NJOJNBMSFQSFYͷྫ 2ϦετΛTVN ͯ͠΋ΤϥʔʹͳΓ·͢ɻ 2Ϧετͷ஋ͷ࿨Λܭࢉ͍ͨ͠ͷͰ͕͢ɺҎԼͷ ίʔυ͕ΤϥʔʹͳΓ·͢ɻ Y< > TVN Y 5SBDFCBDL NPTUSFDFOUDBMMMBTU 'JMFTUEJO MJOF JONPEVMF 5ZQF&SSPSVOTVQQPSUFEPQFSBOEUZQF T GPSJOUBOETUS` l ʮྑ͍࣭໰ʯΛ͠Α͏ͱ͢Δաఔ΋ษڧʹͳΔ ը૾͡Όͳͯ͘จࣈͰ

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ࢀߟɿNJOJNBMSFQSFY l 3͓͡͞Μͷҟৗͳଈճ౴·ͨ͸ࢲ͸೗Կʹͯ͠৺഑͢ ΔͷΛࢭΊͯSXBLBMBOHͰ࣭໰͢ΔΑ͏ʹͳ͔ͬͨ IUUQTTQFBLFSEFDLDPNZVUBOOJIJMBUJPOIPXJMFBSOFEUPTUPQXPSSZJOH BOEBTL l ࣭໰͓଴͓ͪͯ͠Γ·͢ʂͰ͖Ε͹SFQSFY࢖ͬͯͶ IUUQTVSJCPIBUFOBCMPHDPNFOUSZ l SFQSFYύοέʔδͷ࢖͍ํɺ͋Δ͍͸ӋௗʹౖΒΕΔ લʹ஌Δ΂͖ͭͷ͜ͱ IUUQTOPUDIBJOFEIBUFOBCMPHDPNFOUSZ

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ࢀߟɿSXBLBMBOHίϛϡχςΟ IUUQTUXJUUFSDPNIFBWZXBUBMTUBUVT T

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࣭໰͸Ғ͍ ࣭໰͢Δ΍ͭ͸ΊͪΌͪ͘ΌҒ ͍ɻͲΕ͘Β͍Ғ͍͔Λղઆ͠ ͨͭͷ߲໨͕࿩୊ʹ ΫιϦ ϓେձ΋ຄൃʛUPHFUUFS IUUQTUPHFUUFSDPNMJ

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1SJWBUF4IBSJOHʹ͸஫ҙ l ։࠵தίϯϖʹؔͯ͠ɺνʔϜ֎Ͱͷίʔυ΍ σʔλͷڞ༗͸ېࢭ l ެࣜͷLFSOFMT EJTDVTTJPOTΛར༻͢Δ l ٞ࿦΋LBHHMF্͕๬·͍͠ IUUQTXXXLBHHMFDPNDQMBOFUVOEFSTUBOEJOHUIFBNB[POGSPN TQBDFEJTDVTTJPO BENJO͝ͱʹҙݟ͸ҟͳΔ

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4UFQճ౴ͯ͠ΈΑ͏

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ճ౴͢Δ࣌͋Δ͋Δ l ࣗ෼ΑΓݰਓ͕ͨ͘͞Μ͍Δ͔Βʜʜɻ l ࣗ෼͸߹͍ͬͯΔͱࢥ͏͚Ͳɺຊ౰͸ؒҧͬͯ ͍Δ͔΋ʜʜʁ

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ࣗ෼ͳΓͷରԠࡦʢߟ͑ํʣ l ݰਓͩͱॳ৺ऀͷ࣌ͷهԱ͕ബΕ͕ͪ ü ʮͳͥ෼͔Βͳ͍͔ʯ͕෼͔Βͳ͍৔߹΋ l ෼͔Δͱ͜Ζ·Ͱճ౴ͯ͠ɺո͍͠෦෼͸ਖ਼௚ ʹ఻͑Δ ü ʮ͖ͨͨ୆ʯ͕͋Δͱޙʹଓ͖΍͍͢

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ճ౴͢ΔͨΊͷํ๏ l Πϯλʔωοτݕࡧ ü ެࣜυΩϡϝϯτ ü (JU)VCʢιʔείʔυɺJTTVFTʣ ü BS9JWͳͲͷ࿦จ ü ͦͷଞϒϩάͳͲ l σόοά͢Δ ü ࣭໰͕ίʔυ෇͖ͳΒɺΤϥʔ͕࠶ݱ͢Δ͔֬ೝ

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ճ౴͢ΔͨΊͷ5JQT l (PPHMFݕࡧͷػೳΛ࢖͏ ü l zɺݴޠઃఆɺظؒࢦఆͳͲ l ӳޠͰݕࡧ͢Δ ü ΍ͬͺӳޠͷํ͕৘ใྔ͕ଟ͍ʢάάΕΔӳޠྗʣ l ೔ࠒ͔ΒΞϯςφΛ޿͘ு͓ͬͯ͘ ü ʮ͋ͷลΛௐ΂Ε͹ྑͦ͞͏ʯΛ஌͓ͬͯ͘

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ճ౴͢Δͷ͕Ұ൪ษڧʹͳΔ l ճ౴͢ΔͨΊʹ͸ɺਂ͍ཧղͷͨΊʹʮී௨ʯ ͷษڧΛ͢Δ l ࣗ෼͕ᐆດʹ͝·͔͍ͯͨ͠෦෼ʹؾ෇͘ l ࣗ෼ͷࢥ͍͔ͭͳ͔ͬͨख๏ɾ໰୊Λఏࣔͯ͠ ͘ΕΔ

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࠷ޙʹվΊͯ

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5-%3 l LBHHMFSKB TMBDL XJLJ NFFUVQFUD ʹ͸ɺ ॳ৺ऀ΋ؾܰʹࢀՃͰ͖Δʮ೔ຊͷσʔλ෼ੳ ίϛϡχςΟʯͰࡏΓଓ͚ͯ΄͍͠ ü 4UFQ ࢀՃͯ͠ΈΑ͏ ü 4UFQ ࣭໰ͯ͠ΈΑ͏ ü 4UFQճ౴ͯ͠ΈΑ͏ -FU`TLBHHMFSKBESJWFOMFBSOJOH ಛʹTMBDLʹ͍ͭͯ

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8JOPS-FBSO :PV/FWFS-PTF #Z.BSJPT .JDIBJMJEJT ,B["OPWB ,%%BU-POEPO GSPN!WFSGJU`TUXFFU IUUQTUXJUUFSDPNWFSGJUTUBUVT T

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উ͚͕ͭͩLBHHMF͡Όͳ͍ ࣗ෼ͳΓͷֶͼ͕ಘΒΕΕ͹ ͦΕ͸ʮෛ͚ʯ͡Όͳ͍ TMBDLࢀՃ͸ͪ͜Β͔Β IUUQTLBHHMFSKBIFSPLVBQQDPN