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Google Colaboratoryで学ぶ機械学習の基礎 / googlecolaboratory-de-manabu-kikaigakushu-no-kiso
Takahiro Kato
April 13, 2019
Technology
0
160
Google Colaboratoryで学ぶ機械学習の基礎 / googlecolaboratory-de-manabu-kikaigakushu-no-kiso
Takahiro Kato
April 13, 2019
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Transcript
Google ColaboratoryͰֶͿػցֶशͷجૅ 4AI: Ճ౻ و
Agenda w ࣗݾհ w ༰ͷઆ໌ w ػցֶशͷجૅ ࠲ֶ w
(PPHMF$PMBCPSBUPSZ $PMBC ʹ͍ͭͯ w ػցֶशϋϯζΦϯ ϓϩάϥϜ࠲ֶ w ػցֶश·ͱΊ
ࣗݾհ ໊લ Ճ౻و ͔ͱ͏͔ͨͻΖ ࣄɿ Ѫඤݝ৽ډࢢࡏॅ ݩͷձࣾͰάϧʔϓ̨̚*5ਪਐ ࠓ͔͚͍ͬͯΔ̞̩ٕज़ɿ "*ɺ*P5ɺ4FSWFSMFTT"SDIJUFDUVSF
ࠓ͔͚͍ͬͯΔ"*ؔͷٕज़ɾαʔϏεɿ ػցֶशɺ1ZUIPOɺ,BHHMFɺTDJLJUMFBSO ʢσΟʔϓϥʔχϯάͷϋϯζΦϯʜʣ
༰ͷઆ໌
༰ͷઆ໌ ࠓͷΰʔϧ w $PMBCͰػցֶशͷϞσϧΛ࡞ w ػցֶशͷΈͷཧղ w Ͱ͖ΔࣄɾͰ͖ͳ͍ࣄ w ඞཁͳͷ
༰ͷઆ໌ ϋϯζΦϯͰΒͳ͍ࣄ w ϓϩάϥϜͷৄ͍͠આ໌ w ػցֶशϓϩάϥϜͷ࡞ w TDJLJUMFBSO ػցֶशϥΠϒϥϦ Λ༻
w σʔλͷલॲཧΛ࣮ࢪ
ػցֶशͷجૅ
ػցֶशͷجૅ ͡Ίʹ w ຊ༰ͷػցֶश㲈ػցֶश<ڭࢣ͋Γֶश> w ຊ༰ͷϞσϧʢܭࢉࣜʣͷྫ ⭕Θ͔Γ͢͞ ❎࣮ફత
ػցֶशͷجૅ ΠϯϓοτΛΞτϓοτʹม Ϟσϧ ࣜ ʹΠϯϓοτͨ͠Λೖͯ͠ࢉग़ ྫɽ͔Βඅ༻Λࢉग़͢Δ"* "*ͷϞσϧɿZY Zඅ༻Y ͕ͷ߹
<> <අ༻>
ػցֶशͷجૅ අ༻ Z Y ֶशσʔλ
ϓϩοτਤ্ͷ ͷ༩ ˞ֶशσʔλͱΠϯϓοτ<>ͱΞτϓοτ<අ༻>͕ηοτʹͳͬͨσʔλ
ػցֶशͷجૅ අ༻ Z Y Ծઆͷ࡞
˞ԾઆͱΠϯϓοτͱΞτϓοτͷؔΛਪଌ͠ɺࣜͰදͨ͠ͷ
ػցֶशͷجૅ අ༻ Z Y ZY
Ϟσϧͷ࠾༻ Ϟσϧͱֶशσʔλͷޡࠩͷτʔλϧ͕࠷খ͍͞ԾઆΛϞσϧʹ࠾༻
ػցֶशͷجૅ Ϟσϧ·ͱΊ w "*͕Πϯϓοτ˞ΛΞτϓοτ˞ʹม͢Δͷ w ֶशσʔλͱΞϧΰϦζϜʹΑͬͯߏங͞ΕΔͷ w ਖ਼ମࣜ ˞ਓ͔Βͷ࣭ͳͲ ˞ਓ͔Βͷ࣭ʹର͢Δ͑ͳͲ
$PMBC ʹ͍ͭͯ
ػցֶशϋϯζΦϯ $PMBCͱʁ w (PPHMF͕ػցֶशͷڭҭݚڀ༻ʹఏڙͨ͠ΞϓϦ w (PPHMF͕ΧελϚΠζͨ͠+VQZUFS/PUFCPPL w ڥ࡞͕୭ͰͰ͖ΔϨϕϧͰ؆୯ w ແྉʢ(16ɺ516ͷ༻Մೳʣ
˞+VQZUFS/PUFCPPLػցֶशʹΑ͘༻͞ΕΔͷ
ػցֶशϋϯζΦϯ $PMBCͷ੍ݶ w Πϯελϯεىಈ͔Β࣌ؒܦաͰΠϯελϯεఀࢭ w ηογϣϯ͕Ε͔ͯΒܦաͰΠϯελϯεఀࢭ
ػցֶशϋϯζΦϯ
ػցֶशϋϯζΦϯ ϋϯζΦϯ༻σʔλ IUUQTCJUMZ9WHK) ಡΈࠐΉϑΝΠϧ 3FHSFTTJPO #PTUPOIPVTFQSJDFT JQZOC $MBTTJGJDBUJPO IBOEXJUUFOEJHJUT JQZOC
ࠓͷ·ͱΊ
ࠓͷ·ͱΊ جຊతʹࣈɺࣈͰදͤΔͷ͔͠ѻ͑ͳ͍ w ࣗવݴޠॲཧϕΫτϧԽ͍ͯ͠Δ w ٕज़ͷਐาʹΑΓɺը૾σʔλΛѻ͏ࣄ͕Մೳʹ ֶशσʔλʹΑͬͯਫ਼͕େ͖͘มԽ͢Δ w ༻͢Δσʔλʢಛʣͷܾఆ w
ܽଛɾҟৗͷॲཧ मਖ਼ɾআ ϞσϧࣜΛ࡞͍ͬͯΔ Ϟσϧ࡞Δ͚ͩͳΒ؆୯ɻਫ਼ΛٻΊΔͱ͍͠
ࠓͷ·ͱΊ جຊతʹࣈɺࣈͰදͤΔͷ͔͠ѻ͑ͳ͍ w ࣗવݴޠॲཧϕΫτϧԽ͍ͯ͠Δ w ٕज़ͷਐาʹΑΓɺը૾σʔλΛѻ͏ࣄ͕Մೳʹ ֶशσʔλʹΑͬͯਫ਼͕େ͖͘มԽ͢Δ w ༻͢Δσʔλʢಛʣͷܾఆ w
ܽଛɾҟৗͷॲཧ मਖ਼ɾআ ϞσϧࣜΛ࡞͍ͬͯΔ Ϟσϧ࡞Δ͚ͩͳΒ؆୯ɻਫ਼ΛٻΊΔͱ͍͠
ࠓͷ·ͱΊ ػցֶशͷ४උ Ӧۀੳͷྫɿ Ӧۀ׆ಈ༰ΛจষͰͳ͘ɺӦۀ׆ಈͷϙΠϯτΛϦετ Ξοϓͯ͠ɺߦಈͷ༗ແ PS είΞ
Ͱೖྗ ΞϙΛࣄલʹͱΓɺࣄ લௐ͔ࠪΒಘͨ Λղܾ͢ΔιϦϡʔγϣ ϯΛఏҊͯ͠ܖ͕ͱ Ε·ͨ͠ Ξϙɹɹɹɹɹ☑ ࣄલௐࠪɹɹɹ☑ ఏҊ࣋ࠐɹ☑ ͓࢈ɹɹɹɹ⬛ ܖ☑
ࠓͷ·ͱΊ جຊతʹࣈɺࣈͰදͤΔͷ͔͠ѻ͑ͳ͍ w ࣗવݴޠॲཧϕΫτϧԽ͍ͯ͠Δ w ٕज़ͷਐาʹΑΓɺը૾σʔλΛѻ͏ࣄ͕Մೳʹ ֶशσʔλʹΑͬͯਫ਼͕େ͖͘มԽ͢Δ w ༻͢Δσʔλʢಛʣͷܾఆ w
ܽଛɾҟৗͷॲཧ मਖ਼ɾআ ϞσϧࣜΛ࡞͍ͬͯΔ Ϟσϧ࡞Δ͚ͩͳΒ؆୯ɻਫ਼ΛٻΊΔͱ͍͠
ࠓͷ·ͱΊ جຊతʹࣈɺࣈͰදͤΔͷ͔͠ѻ͑ͳ͍ w ࣗવݴޠॲཧϕΫτϧԽ͍ͯ͠Δ w ٕज़ͷਐาʹΑΓɺը૾σʔλΛѻ͏ࣄ͕Մೳʹ ֶशσʔλʹΑͬͯਫ਼͕େ͖͘มԽ͢Δ w ༻͢Δσʔλʢಛʣͷܾఆ w
ܽଛɾҟৗͷॲཧ मਖ਼ɾআ ϞσϧࣜΛ࡞͍ͬͯΔ Ϟσϧ࡞Δ͚ͩͳΒ؆୯ɻਫ਼ΛٻΊΔͱ͍͠
ػցֶश·ͱΊ σʔλͷ ҼՌؔͷ͋Δಛσʔλ͕ෳଘࡏ͢Δ߹ɿ ෳͷσʔλΛͦΕͧΕ"*ʹ༩͑Δ͚ͩͰͳ͘ɺ ෳͷσʔλΛ߹ࢉͨ̍ͭ͠ͷσʔλΛ༩͑Δ ZВY ВY YY Y ZВY
ࠓͷ·ͱΊ جຊతʹࣈɺࣈͰදͤΔͷ͔͠ѻ͑ͳ͍ w ࣗવݴޠॲཧϕΫτϧԽ͍ͯ͠Δ w ٕज़ͷਐาʹΑΓɺը૾σʔλΛѻ͏ࣄ͕Մೳʹ ֶशσʔλʹΑͬͯਫ਼͕େ͖͘มԽ͢Δ w ༻͢Δσʔλʢಛʣͷܾఆ w
ܽଛɾҟৗͷॲཧ मਖ਼ɾআ ϞσϧࣜΛ࡞͍ͬͯΔ Ϟσϧ࡞Δ͚ͩͳΒ؆୯ɻਫ਼ΛٻΊΔͱ͍͠
5IBOLZPVGPSZPVSBUUFOUJPO