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SIGNATEの練習問題コンペで 57位までスコアを上げた話/ The story of the signate competition
Shoichiro Nagai(shnagai)
November 05, 2019
Technology
2
3.3k
SIGNATEの練習問題コンペで 57位までスコアを上げた話/ The story of the signate competition
Connehito Marché vol.6 ~機械学習・データ分析市~
Shoichiro Nagai(shnagai)
November 05, 2019
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Transcript
$POOFIJUP*ODӬҪউҰ ϚϚͷҰาΛࢧ͑Δ 4*(/"5&ͷ࿅शίϯϖͰ Ґ·ͰείΞΛ্͛ͨ $POOFIJUP.BSDIÉWPMʙػցֶशɾσʔλੳࢢʙ
ࣗݾհ ӬҪউҰ ओͳ׆ಈ "84%FW%BZ5PLZP +BQBO$POUBJOFS%BZTW "844VNNJU ͡Ίͯͷ1)1ϓϩϑΣογϣφϧ։ൃ ܦ4:45&.4 ϚϚϦ͕࣮ફ͢Δɹίϯ ςφҠߦͷਖ਼߈๏
ίωώτΤϯδχΞϒϩάIUUQTUFDIDPOOFIJUPDPNBSDIJWFBVUIPSOBHBJT ίωώτגࣜձࣾɹΤϯδχΞ ΠϯϑϥΣϒΦϖϨʔγϣϯػցֶश ࠷ۙ !TIOBHBJ
-5ͳͷͰαΫαΫͬͱ ॳΊͯσʔλαΠΤϯείϯϖʹ ࢀՃͨ͠ମݧஊʹ͍͓ͭͯ͠·͢
͋Δͷ.-νʔϜͰͷձ
ֶशਐΊ͖ͯͯɺͦΖͦΖࣗͰϞσϧ࡞Γ͍ͨͳ ӬҪ͞ΜαοΧʔ͖Ͱͨ͠ΑͶ ͏Μɻͣͬͱ͖ͬͯͯͯࠓࢠڙͷαοΧʔ௮͚ͷि 4*(/"5&ͱ͍͏ίϯϖαΠτʹࢀՃͯ͠ΈͯͲ͏Ͱ͔͢
͓͠ɺͬͯΈΔͧ Αͦ͞͏ ͲΜͳͷ͔Θ͔ͬͯͳ͍͚Ͳ +Ϧʔάͷ؍٬༧ଌͷ࿅श͕͋Δ͔ΒͦΕΛͬͯΈ·͠ΐ͏ ˞αοΧʔͷσʔλͳΒΓ͍͢ΜͰͱ͍͏λΧύΠͷ͍͞͠ࢥΛޙΔ
͡Ίͯػցֶशͷίϯϖʹ ࢀՃͯ͠ΈΔ͜ͱʹͨ͠
w ຊ࠷େͷσʔλαΠΤϯςΟετίϛϡχςΟ w ຊͷاۀ͔Βఏڙ͞ΕͨσʔλͰίϯϖΛ։࠵ w ຊ൛,BHHMFͱݴΘΕ͍ͯΔ 4*(/"5&ͱ
w ʲ࿅शʳ+Ϧʔάͷ؍٬ಈһ༧ଌ ʙγʔζϯલͷσʔλ͔Β ʮޙઓ+ +શࢼ߹ͷ؍٬ಈһΛ༧ଌ͢ΔϞσϧʯΛ࡞ IUUQTTJHOBUFKQDPNQFUJUJPOTMFBEFSCPBSE ࢀՃͨ͠ίϯϖ
େ·͔ͳྲྀΕ ϕʔεϥΠϯϞσϧ ࡞ ଌఆ 4*(/"5&্ͷείΞ σʔλੳ &%" ಛྔ࡞ બ Ϟσϧ࡞
ଌఆ 34.&ͰखݩͰධՁ ྑ͘ͳ͍߹ɻɻ ྑ͍
େ·͔ͳྲྀΕ ϕʔεϥΠϯϞσϧ ࡞ ଌఆ 4*(/"5&্ͷείΞ σʔλੳ &%" ಛྔ࡞ બ
Ϟσϧ࡞ ଌఆ 34.&ͰखݩͰධՁ ྑ͘ͳ͍߹ɻɻ ྑ͍ ྑ͍είΞग़Δ·Ͱ͜ͷྲྀΕΛͻͨ͢Β܁Γฦͨ͠
ϕʔεϞσϧͷείΞ ͘Β͍Λࢦͯͬͯ͠Έ·͠ΐ͏ʂʂ ؤுͬͯΈΔʂʂʂ
σʔλੳͲΜͳ͜ͱΛ͔ͨ͠
w جຊʹଇΓಛྔͷ૯ܽଛσʔλͷ֬ೝ ࠓճ݀ຒΊͨ͠σʔλ݅ w ಛྔຖͷΛݟͨΓ + +ͷֶशσʔλྔͷൺ w 1BOEBTͷHSPVQCZͰಛྔຖͷ؍٬ͷӨڹݟͨΓ σʔλੳ
w جຊʹଇΓɺಛྔͷ૯ܽଛσʔλͷ֬ೝ w ಛྔຖͷͷόϥπΩΛݟͨΓ + +ͷֶशσʔλྔͷൺ w 1BOEBTͷHSPVQCZͰಛྔຖͷ؍٬ͷӨڹݟͨΓ σʔλੳ ਖ਼ʹݴ͏ͱ
+VQZUFS/PUFCPPLͷϝϞ͕গͳ͗͢Ͱ ޙ͔ΒԿΛ͔ͬͨৼΓฦΔͷ͕େมͩͬͨ
None
͜Ε͔Βσʔλੳ͢Δ࣌ ͦͷ࣌ʑͷࢥߟΛϝϞʹ͢͠ͱ͍͏ ڧΊͷڭ܇ΛಘΔ
ಛྔ࡞ʹશମͷׂͷ࣌ؒΛ͔͚ͨ
w ੳ݁Ռ͔Β؍٬ʹӨڹͷେ͖ͦ͏ͳಛྔΛ࡞ νʔϜຖͷฏۉ؍٬ IPNF BXBZ ελδΞϜຖͷฏۉ؍٬ ։࠵݄ γʔζϯऴ൫ू٬͕ྑ͍
࣌ؒଳ ؙΊͯΧςΰϦԽ ఱؾΛΧςΰϦԽ w ྫ͑ɺఱؾ͚ͩͰύλʔϯ͋ͬͨͷͰؙΊͯΧςΰϦԽ ͷͪಶ࣌ʑӍ ͷͪಶҰ࣌ӍFUD ӍPSΕPSPSͦͷଞͷύλʔϯʹྨ ࡞ͨ͠ಛྔᶃ
w ఆੑతײ͔֮ΒͷಛྔΛ࡞ ϑΥϧϥϯͷελʔϓϨʔϠʔ͕ΞΣΠνʔϜʹ͍Δͱਓू·Γͦ͏ +ͷਓؾબख + +Ͱू٬ʹେ͖͕ࠩ͋͘ΔͷͰͷঢ֨߱֨Λܗʹ BXBZͰͷ Ͱͷฏۉ؍٬ͷνʔϜຖࠩ ࣌ͰͷνʔϜਓؾͱελδΞϜͷվम ࠃཱͰΊͪΌࢼ߹͢Δͱ͔
ΛΧόʔ IPNFͰͷͷ࠷େ؍٬ w ࣗͷ+Ϧʔάʹର͢ΔυϝΠϯࣝΛϑϧ׆༻ ଞͷڝٕͩͬͨΒࢥ͍ු͔ͳ͔͔ͬͨ ࡞ͨ͠ಛྔᶄ
࠷ऴతͳ'FBUVSF*NQPSUBODF w ఆੑతʹ࡞ͬͨσʔλ͕Ϟσϧʹͦͦ͜͜Өڹ༩͑ͯΔ
࠷ऴతͳ'FBUVSF*NQPSUBODF w ఆੑతʹ࡞ͬͨσʔλ͕Ϟσϧʹͦͦ͜͜Өڹ༩͑ͯΔ Α͘ຊͰݟΔ ઐՈ υϝΠϯ ࣝͷॏཁ͞Λମݧ
w ΧςΰϦΧϧσʔλʹؾܰʹϫϯϗοτΤϯίʔσΟϯά͕͑ͳ͍ νʔϜελδΞϜͷΧςΰϦΧϧͳσʔλΛϫϯϗοτΤϯίʔσΟϯάͯ͠ɺ ಛྔՃ͢Δͱଌఆ༻σʔλʹಉ͡σʔλαϯϓϧ͕ͳͯ͘ΤϥʔΛు͘ɻɻɻ ֶशσʔλͱଌఆ༻σʔλͷ͕ࠩͳ͍ͱࢥ͍͜ΜͰͨͷͰચྱΛ͏͚ͨ w ҙຯͷͳ͍εέʔϧม ࿈ଓͷಛྔΛ.JO.BY4DBMFSͬͯεέʔϧม ͪΐ͏ͲֶΜͰͨ
ˣ ޯϒʔεςΟϯάͰϞσϧ࡞ Θ͘Θ͘ ˣ શ݁͘ՌมΘΒͳ͍ɻɻɻ ۤ࿑ͨ͠ͷʹɺɺޙʹܥͷΞϧΰϦζϜεέʔϧม͕ҙຯͷͳ͍ ͜ͱΛΔɻɻ ಛྔ࡞Ͱۤ࿑ͨ͠ϙΠϯτ
w ֶश ݕূσʔλͷׂํ๏ΛTUBHF + + ͰԽநग़ w ʙͰ৳ͼΜͰ͍ͨείΞ͕Ұؾʹۙลʹ৳ͼͨ είΞʹ࠷د༩ͨ͠ࡦ
w ϥϯμϜϑΥϨετޯϒʔεςΟϯά TDJLJUMFBSO ಛྔͷॏཁ͕Γ͔ͨͬͨͷͰܾఆܥΞϧΰϦζϜΛબ ಛྔબͷͦΕͧΕάϦουαʔνͯ͠ϞσϧΛ࡞ ֶश ݕূσʔλʹର͢ΔείΞͱ34.&ΛࢀߟʹϞσϧͷ༏ྼΛखݩͰஅ ϕετείΞग़ͨ߹ͷΈ4*(/"5&ʹΞοϓϩʔυ ΞϧΰϦζϜબఆ
ॳίϯϖͷ݁Ռ
είΞ͔Βˢˢˢ
ਓதҐʹ
ਓதҐʹ ΊͪΌͪ͘Ό͏Ε͍͠
w ͡ΊͯࣗྗͰϞσϧΛ࡞ͯ͠ΈͯಛྔબͷॏཁੑΛ ΛͬͯମݧͰ͖ͨ w +VQZUFS/PUFCPPL͜·ΊʹϝϞΛ͢श׳͕େࣄͩͱ ࠶ೝࣝ ޙ͔Βݟฦ͢ͱͬͨ͜ͱͷ8IZͷ෦Λ͍ͩͿΕͯΔɻɻ w ίϯϖɺείΞͱ͍͏ܗͰ݁Ռ͕ग़ΔͷͰͦΕ͕Ϟνϕʔ γϣϯʹͳΔ͠εΩϧΞοϓग़དྷΔָ͍͠͠ʂʂ
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