MACHINE LEARNING Meetup KANSAI #4 Main Session https://mlm-kansai.connpass.com/event/119084/
2 3 7 9 0 1©SAKURA Internet Inc. ."$)*/&-&"3/*/(.FFUVQ,"/4"* !େࡕ
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˓݁থߏͷάϥϑԽ ˕τϥϑΟοΫσʔλҟৗͷཁҼΛՄࢹԽͰ͖ΔҟৗݕͷԠ༻ *1 5$1 )551 4:/ "$,ྫʣάϥϑߏԽάϥϑΈࠐΈχϡʔϥϧωοτϫʔΫ ෦άϥϑ
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(SBQIJDBM -BTTPɼ֤࣌ܥྻಛྔ͕ਖ਼نͰ͋Δ͜ͱʢଟมྔਖ਼نʣΛԾఆ͍ͯ͠Δɽগͳ͘ͱಛఆͷ֬Λ༗͍ͯ͠Δ͜ͱ͕ٻΊΒΕΔɽ֬ߦྻܭࢉʹࣦഊ͢Δ߹͕͋ͬͨɾ ࣌ܥྻσʔλ͕ৗʹθϩͰ͋Δ߹ɾ ࣌ܥྻσʔλ͕ҰఆͰ͋Δ߹θϩ·ͨҰఆͷσʔλΛল͍ͯάϥϑԽ͢Δˠ ࣍ݩʢϊʔυʣଗ͑Δඞཁ͕͋ΔҟͳΔ࣍ݩͰར༻Ͱ͖Δҟৗݕख๏Λߟ͑Δඞཁ͕͋Δ՝ᶄάϥϑߏԽ
ʜ ʜਖ਼ৗάϥϑ άϥϑO άϥϑNʜ ʜΟϯυαΠζ୯Ұͷਖ਼ৗঢ়ଶΛԾఆͨ͠ͱ͖ͷҟৗΛݕ͍ͯ͠Δˠෳͷਖ਼ৗঢ়ଶʢ࣌ؒґଘڥґଘͳͲʣ͕ଘࡏ͢Δ߹ʹޡݕ͢Δ߹͕༧͞ΕΔɽ՝ᶅ
ʜ ʜΟϯυαΠζఏҊख๏ᶄڭࢣ͋Γֶशܕ ग़ྗ:ʢਖ਼ৗҟৗʣྨ 1PPMJOH'JOHFSQSJOU1PPMJOH'JOHFSQSJOU̍ۙ ۙʜʜ//ˎ 8ˎ 8ˎ 8$POW $POWˎ 8ˎ 8ˎ 8ೖྗૄߏֶशʢ(SBQIJDBM-BTTPʣάϥϑΈࠐΈ//%"31"ෳͷ࣌ܥྻಛྔΛநग़ରࠩܥྻσʔλͷมඪ४ԽఏҊख๏ᶃڭࢣͳֶ͠शܕάϥϑͷ่ΕάϥϑΈࠐΈχϡʔϥϧωοτϫʔΫ'JOHFSQSJOUɿ ࠷େۙɿ ӅΕαΠζɿ όοναΠζɿ ΤϙοΫɿ σʔλͷׂ߹ʢ܇࿅ɿݕূʣɿ70:30($//ͷֶशύϥϝʔλ
ਖ਼ղσʔλ༧ଌ݁ՌάϥϑߏԽͨ͠τϥϑΟοΫσʔλΛ($//Ͱֶशͨ݁͠Ռɼ༧ଌਫ਼͕ͱͳͬͨɽ͜ͷઌߦݚڀͰใࠂ͞Ε͍ͯΔͱಉఔʹߴ͍Ͱ͋Δɽਤ ਖ਼ղσʔλ͓ΑͼֶशϞσϧʹΑΔ༧ଌ݁Ռख๏ ༧ଌਫ਼ จݙχϡʔϥϧωοτϫʔΫ αϙʔτϕΫλʔϚγϯ -45. ϕΠδΞϯωοτϫʔΫ ද ػցֶशܕ*%4ͷઌߦݚڀͷྫ 4.VLLBNBMB FUBM 5SBJOJOH +,JNFUBM ``JO1SPD*OU$POG1MBUGPSN5FDIOPM4FSWJDF r 4$IFCSPMV FUBM $PNQVUFST4FDVSJUZ
($//Ͱֶशͨ͠ϞσϧΛར༻͠ɼ'JOHFS 1SJOUͷऔಘʹޭͨ͠ɽ4:/GMPPE߈ܸ࣌ɼҟৗ͕ݕ͞Εɼ'JOHFS 1SJOUͰߴ͍ӨڹΛࣔ͢෦άϥϑɼ)551ͱ4:/ͷ૬ؔؔʹؔ࿈͢ΔͷͰ͋ͬͨɽ(a)(b) ਤ 'JOHFSQSJOU͓ΑͼҟৗͷཁҼͱͳͬͨ෦άϥϑͷҰྫ4:/GMPPE߈ܸ෦άϥϑ'JOHFS1SJOUӨڹ
4NVSG߈ܸ࣌ɼ'JOHFS1SJOUͷӨڹͷߴ͍෦άϥϑɼૹ৴ݩ*1͓Αͼ*$.1ͷ૬ؔؔʹؔ࿈͢ΔͷͰ͋ͬͨɽఏҊख๏ᶄͰϊʔυؒͷ૬ؔؔʢ෦άϥϑʣͷՄࢹԽͰ͖ΔͨΊɼϊʔυͷՄࢹԽͷΈͰ͋ͬͨఏҊख๏ᶃΑΓ۩ମతͳઆ໌ੑ͕ظͰ͖Δɽ(b)ਤ 'JOHFSQSJOU͓ΑͼҟৗͷཁҼͱͳͬͨ෦άϥϑͷҰྫ4:/GMPPE߈ܸ෦άϥϑ'JOHFS1SJOUӨڹ
ग़ྗ:ʢਖ਼ৗҟৗʣྨ 1PPMJOH'JOHFSQSJOU1PPMJOH'JOHFSQSJOU̍ۙ ۙʜʜ//ˎ 8ˎ 8ˎ 8$POW $POWˎ 8ˎ 8ˎ 8ೖྗఏҊख๏ᶄͰɼਖ਼ৗঢ়ଶ͓Αͼҟৗঢ়ଶΛ෦άϥϑ୯ҐͰֶश͢ΔͨΊɼෳͷਖ਼ৗঢ়ଶ͕ଘࡏ͢Δ߹࣍ݩ͕ҟͳΔ߹Ͱؤڧͳݕ͕ظͰ͖Δɽਤ /'1ͷωοτϫʔΫུ֓ਤఏҊख๏ᶃͷ՝• ࣍ݩʢϊʔυʣଗ͑Δඞཁ͕͋ͬͨ• ୯Ұͷਖ਼ৗঢ়ଶΛԾఆ͍ͯ͠ΔͨΊɼෳͷਖ਼ৗঢ়ଶʢ࣌ؒґଘڥґଘͳͲʣ͕ଘࡏ͢Δ߹ʹޡݕ͢Δ߹͕༧͞ΕΔɽ
ݚڀॴͷίϯηϓτɿ ʮݸମܕσʔληϯλʔʯ ݱࡏσʔληϯλʔʹڊେͳίϯϐϡʔςΟϯάϦιʔε͕ଘࡏ͍ͯ͠·͕͢ɼࠓޙϨΠςϯγʗηΩϡϦςΟʗίετͷཁ͔݅Βɼ͋ΒΏΔॴࣾձɼ৫ʹίϯϐϡʔςΟϯάϦιʔε༹͕͚ࠐΜͰ͍͘͜ͱʹͳΓ·͢ɽ ͦΕΒࢄͨ͠ίϯϐϡʔςΟϯάϦιʔεɼ୯ಠͰίϯϐϡʔςΟϯάύϫʔΛఏڙ͢Δʹཹ·ΒͣɼͦͷॴࣾձͷཁٻʹԠͯ͡ɼࣗతʹɼࢄ͋Δ͍༗ػతʹ݁߹͠ɼݱɾΫϥυͦΕͧΕ͕ॎԣʹ݁ͼ͍ͭͨϋΠϒϦουߏΛͱΔΑ͏ʹػೳ͠·͢ɽ ͜ͷΑ͏ͳγεςϜʹΑΓ࣮ݱ͞ΕΔͷɼਓʑͷۙʹଘࡏ͠ɼϦΞϧλΠϜ͔ͭΠϯςϦδΣϯεʹϢʔβΛࢧ͑ͳ͕Βɼ͔͠͠ಉ࣌ʹόοΫΤϯυଆ͕༗ػతʹ݁߹͢Δ͜ͱʹΑΓɼ͔ͭͯͳ͍ϚγϯύϫʔͱϦιʔεྔΛಈһ͢Δ͜ͱͰݱ࠷ద͔ͭશମ࠷దΛ࣮ݱ͢Δ4VQFS0SHBOJ[FE8PSMEͰ͢ɽ1) https://research.sakura.ad.jp/2019/02/22/concept-vision-2019//
ݚڀॴͷίϯηϓτɿ ʮݸମܕσʔληϯλʔʯ ݱࡏσʔληϯλʔʹڊେͳίϯϐϡʔςΟϯάϦιʔε͕ଘࡏ͍ͯ͠·͕͢ɼࠓޙϨΠςϯγʗηΩϡϦςΟʗίετͷཁ͔݅Βɼ͋ΒΏΔॴࣾձɼ৫ʹίϯϐϡʔςΟϯάϦιʔε༹͕͚ࠐΜͰ͍͘͜ͱʹͳΓ·͢ɽ ͦΕΒࢄͨ͠ίϯϐϡʔςΟϯάϦιʔεɼ୯ಠͰίϯϐϡʔςΟϯάύϫʔΛఏڙ͢Δʹཹ·ΒͣɼͦͷॴࣾձͷཁٻʹԠͯ͡ɼࣗతʹɼࢄ͋Δ͍༗ػతʹ݁߹͠ɼݱɾΫϥυͦΕͧΕ͕ॎԣʹ݁ͼ͍ͭͨϋΠϒϦουߏΛͱΔΑ͏ʹػೳ͠·͢ɽ ͜ͷΑ͏ͳγεςϜʹΑΓ࣮ݱ͞ΕΔͷɼਓʑͷۙʹଘࡏ͠ɼϦΞϧλΠϜ͔ͭΠϯςϦδΣϯεʹϢʔβΛࢧ͑ͳ͕Βɼ͔͠͠ಉ࣌ʹόοΫΤϯυଆ͕༗ػతʹ݁߹͢Δ͜ͱʹΑΓɼ͔ͭͯͳ͍ϚγϯύϫʔͱϦιʔεྔΛಈһ͢Δ͜ͱͰݱ࠷ద͔ͭશମ࠷దΛ࣮ݱ͢Δ4VQFS0SHBOJ[FE8PSMEͰ͢ɽ1) https://research.sakura.ad.jp/2019/02/22/concept-vision-2019//ϨΠςϯγʗηΩϡϦςΟʗίετͷཁ݅ʹΑΓେنूத͔Βࢄʹมભ͍ͯͨͩ͘͠͠ɺͨͩͷࢄͰͳ͘lࣗతʹzࢄ͋Δ͍༗ػతʹ݁߹͠ϋΠϒϦουߏΛऔΔݱ࠷దԽ͔ͭશମ࠷దԽΛ࣮ݱ͠ɺզʑͷΑΓۙͳଘࡏͱͯ͠ϦΞϧλΠϜ͔ͭΠϯςϦδΣϯεʹϢʔβΛࢧ͑ΔະདྷͷσʔληϯλʔͰ͋Δݸମత˞ࢲͳΓͷղऍ
ͦͦݸମͱɼ• ʮଟͷݸମ͔Βܗ͞Εɼ·ΔͰҰͭͷݸମͰ͋Δ͔ͷΑ͏ʹৼΔ͏ੜͷूஂͷ͜ͱʯ• ʮݶఆతͳೳͱใ͔࣋ͨ͠ͳ͍ݸମ͕ଟू·ͬͯݸମͷೳྗΛ͑ͨେ͖ͳ͜ͱΛ͛͠ΔͷʯͰ͋Δʢ8JLJQFEJBΑΓʣɽ1) https://ja.wikipedia.org/wiki/2) http://www.flickr.com/photos/bakkenes/4205012347/3) https://fy10119700527i.com/tv/matayoshi-naoki-knowing-the-society-of-ants-3485/ਤ ϛππϘΞϦͷ ਤ Γௗͷ7ࣈୂྻ
ϒϩά͔ΒͷҾ༻֤ίϯϐϡʔςΟϯάಠཱͨ͠ݸମͱͯ͠ػೳ͠ͳ͕Βɼ૯ମͱͯ͠౷͞Ε͍ͯΔΑ͏ʹݟ͑ɼখɾதنσʔληϯλʔ͕ϋϒͱͳͬͯɼ݁Ռతʹશମ͕͏·͘ܨ͕Εߏ͞Ε͍ͯ͘ɽ1) https://research.sakura.ad.jp/2019/02/22/concept-vision-2019/֤ίϯϐϡʔςΟϯάஞֶ࣍शʹΑΔಈతͳಛϕΫτϧΛܗ͠ͳ͕ΒɼෳͷΫϥελʹ·ͱΊΒΕ͍ͯΔΑ͏ʹݟ͑ɼʢҎԼུʣɽ ಛϕΫτϧͷੜ ΫϥελϦϯάػցֶशతΠϝʔδ˞ࢲͳΓͷղऍ
ΫϥελϦϯάʢϊʔυؒڑͷҙຯʣ ྨࣅʢϊʔυɿϝτϦοΫͳͲΛར༻ͨ͠ಛϕΫτϧʣˠྨࣅ༻్Ϋϥελʹجͮ͘ҟৗݕɾ༧ ϨΠςϯγʢϊʔυɿ௨৴ස௨৴༰Λར༻ͨ͠ಛϕΫτϧʣˠϧʔςΟϯάͷॖɼΩϟογϡαʔόͷ࠷దஔ ཧతڑˠՄൖܕαʔόɺσʔληϯλʔͷ࠷దஔ8FCαʔόҟৗҙใ࣌ؒҟৗݕҟৗ༧
࣌ؒ• $16࣌ؒ• σʔλసૹྔ• σΟεΫ*0• Թ• ৼಈͳͲ୯ҰϊʔυͷϝτϦοΫϕΫτϧԽؔάϥϑԽը૾ԽจࣈྻԽۭؒԽػցֶशಛϕΫτϧͷఆٛಛϕΫτϧͷੜ
෦άϥϑΛֶश͢Δརͭͭ͠ɼڭࢣͳֶ͠शͷԠ༻͍ͨ͠ɽͦͷ̍ͭͱͯ͠ɼάϥϑߏʹج͍ͮͨΦʔτΤϯίʔμʔʹ͍ͯ͠ΔɽఏҊख๏ᶄʢ($//ʣʹΑΓෳ࣌ܥྻσʔλΛάϥϑߏͱͯ͠ଊ͑ɼֶश͢Δ͜ͱ͕ՄೳͰ͋Δɽˠ ڭࢣ͋ΓֶशͰ͋ΔͨΊɺϥϕϧ͚͕ඞཁͰ͋ΔɽؔάϥϑߏԽ1) https://ritsuan.com/blog/8480/ਤ ΦʔτΤϯίʔμͷུ֓ਤ
ωοτϫʔΫσʔλΛۭؒσʔλͱͯ͠ଊ͑Δʢྫ͑ɼάϥϑߏ̍࣠ʣ͜ͱ͕Ͱ͖ΕۭؒԽͰ͖Δʁۭؒతͳใʢ܈σʔλʣʹରͯ͠ɼྨ֤छηάϝϯςʔγϣϯ͕Ͱ͖ΔχϡʔϥϧωοτϫʔΫͰ͋Δ1PJOU/FUʹ͍ͯ͠ΔɽۭؒԽ1) https://arxiv.org/abs/1612.00593
ҾྗੱྗϞσϧதੑࢠதੑࢠిࢠిࢠిࢠిࢠిࢠిࢠཅࢠதੑࢠதੑࢠதੑࢠిࢠిࢠిࢠిࢠిࢠཅࢠதੑࢠ தੑࢠதੑࢠిࢠిࢠిࢠిࢠిࢠిࢠཅࢠதੑࢠిࢠిࢠݪࢠ֩ʢཅࢠɼதੑࢠʣˠݪࢠෳͷݪࢠˠࢠɼ݁থҾྗੱྗ˞ղऍ͕গ͠ࡶͳͷͰҙిࢠిࢠݪࢠͦͷͷݪࢠಉ࢜ͷ݁߹ʹΑΔࢠ݁থɺҾྗͱੱྗ͕Γ߹ͬͨঢ়ଶͱߟ͑Δ͜ͱ͕Ͱ͖Δɻిࢠిࢠʢ΄΅༨ஊʣԣஅతࢥߟͷ͓·͚
ҾྗੱྗϞσϧதੑࢠதੑࢠిࢠిࢠిࢠిࢠిࢠిࢠཅࢠதੑࢠதੑࢠதੑࢠిࢠిࢠిࢠిࢠిࢠཅࢠதੑࢠ தੑࢠதੑࢠిࢠిࢠిࢠిࢠిࢠిࢠཅࢠதੑࢠిࢠిࢠݪࢠ֩ʢཅࢠɼதੑࢠʣˠݪࢠෳͷݪࢠˠࢠɼ݁থҾྗੱྗ˞ղऍ͕গ͠ࡶͳͷͰҙిࢠిࢠݪࢠͦͷͷݪࢠಉ࢜ͷ݁߹ʹΑΔࢠ݁থɺҾྗͱੱྗ͕Γ߹ͬͨঢ়ଶͱߟ͑Δ͜ͱ͕Ͱ͖Δɻిࢠిࢠ
ҾྗੱྗϞσϧதੑࢠதੑࢠΩϟογϡΩϟογϡΩϟογϡΩϟογϡΩϟογϡΩϟογϡ௨৴ϝτϦοΫதੑࢠதੑࢠΩϟογϡΩϟογϡΩϟογϡΩϟογϡΩϟογϡ௨৴ϝτϦοΫ தੑࢠதੑࢠΩϟογϡΩϟογϡΩϟογϡΩϟογϡΩϟογϡΩϟογϡ௨৴ϝτϦοΫΩϟογϡΩϟογϡݪࢠ֩ʢڵຯɼϝτϦοΫʣˠϊʔυʢαʔόʣෳͷϊʔυˠΫϥελҾྗੱྗ˞ղऍ͕গ͠ࡶͳͷͰҙΩϟογϡ Ωϟογϡ௨৴༰ͳͲΛͱʹΩϟογϡΛஔ͢ΔϞσϧͰ͓͖͔͑ΔͱɺΩϟογϡαʔόͷ࠷దஔʹར༻Ͱ͖Δ͔͠Εͳ͍ɻΩϟογϡΩϟογϡΩϟογϡαʔό
ҾྗੱྗϞσϧதੑࢠதੑࢠΩϟογϡΩϟογϡΩϟογϡΩϟογϡΩϟογϡΩϟογϡڵຯϝτϦοΫதੑࢠதੑࢠΩϟογϡΩϟογϡΩϟογϡΩϟογϡΩϟογϡڵຯϝτϦοΫ தੑࢠதੑࢠΩϟογϡΩϟογϡΩϟογϡΩϟογϡΩϟογϡΩϟογϡڵຯϝτϦοΫΩϟογϡΩϟογϡݪࢠ֩ʢڵຯɼϝτϦοΫʣˠϊʔυʢαʔόʣෳͷϊʔυˠΫϥελҾྗੱྗ˞ղऍ͕গ͠ࡶͳͷͰҙΩϟογϡ Ωϟογϡ௨৴༰ͳͲΛͱʹΩϟογϡΛஔ͢ΔϞσϧͰ͓͖͔͑ΔͱɺΩϟογϡαʔόͷ࠷దஔʹར༻Ͱ͖Δ͔͠Εͳ͍ɻΩϟογϡΩϟογϡΩϟογϡαʔόಛϕΫτϧΛҾྗʢूத͢Δํʹಇ͘ಛྔʣੱྗʢࢄ͢Δํʹಇ͘ಛྔʣʹղͯ͠ଊ͑Δͱ໘ന͍ͷ͔͠Εͳ͍
ػցֶशάϥϑߏԽ ݁থߏ ੑ τϥϑΟοΫσʔλ ϝτϦοΫσʔλ ωοτϫʔΫσʔλϏοάσʔλ͘͞Βʢใֶʣ ཧݚʢࡐྉֶʣڞ௨ͷݚڀΩʔϫʔυ৽͍͠ࡐྉͷ࣮ݱ৽͍͠σʔληϯλʔͷ࣮ݱత͘͞Βʢใֶʣ ཧݚʢࡐྉֶʣ
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