(ݪจ: Ef fi cientNetV2: Smaller Models and Faster Training) ຊจͰɺैདྷͷϞσϧΑΓߴͳֶशͱ༏ΕͨύϥϝʔλޮΛ࣋ͭɺ৽͍͠ΈࠐΈωοτϫʔΫͷϑΝϛ ϦʔͰ͋ΔEf fi cientNetV2Λհ͠·͢ɻ͜ͷϞσϧ܈Λ։ൃ͢ΔͨΊʹɺզʑτϨʔχϯάΛߟྀͨ͠χϡʔϥϧɾ ΞʔΩςΫνϟͷ୳ࡧͱεέʔϦϯάͷΈ߹ΘͤΛ༻͍ͯɺτϨʔχϯάͱύϥϝʔλޮΛڞಉͰ࠷దԽͨ͠ɻ ͜ͷϞσϧɺFused-MBConvͳͲͷ৽͍͠ػೳͰڧԽ͞Εͨ୳ࡧۭ͔ؒΒ୳ࡧ͞Ε·ͨ͠ɻ࣮ݧͷ݁Ռɺ Ef fi cientNetV2Ϟσϧɺ࠷ઌͷϞσϧΑΓΔ͔ʹߴʹֶशͰ͖ΔҰํͰɺ࠷ྑͰ6.8ഒখ͍͞αΠζʹͳΔ͜ͱ ͕͔Γ·ͨ͠ɻ ֶशதʹը૾αΠζΛஈ֊తʹେ͖͘͢Δ͜ͱͰɺֶशΛ͞ΒʹߴԽ͢Δ͜ͱ͕Ͱ͖·͕͢ɺ͠ ͠ਫ਼ͷԼΛҾ͖ى͜͠·͢ɻ͜ͷਫ਼ԼΛิ͏ͨΊʹɺυϩοϓΞτσʔλ૿ڧͳͲͷਖ਼ଇԽΛదԠతʹௐ ͢Δ͜ͱΛఏҊ͠ɺߴͳֶशͱྑͳਫ਼ͷཱ྆Λ࣮ݱ͍ͯ͠·͢ɻ ϓϩάϨογϒֶशʹΑΓɺEf fi cientNetV2 ImageNet͓ΑͼCIFAR/Cars/Flowersσʔληοτʹ͓͍ͯɺैདྷͷϞσϧΛେ෯ʹ্ճΔ݁ՌΛಘ·ͨ͠ɻಉ͡ ImageNet21kͰࣄલֶशΛߦ͏͜ͱͰɺզʑͷEf fi cientNetV2ImageNet ILSVRC2012ʹ͓͍ͯ87.3%ͷτοϓ1ਫ਼Λ ୡ͠ɺ࠷ۙͷViTΛ2.0%্ճΔਫ਼Λୡ͠·ͨ͠ɻҰํͰɺಉ͡ܭࢉࢿݯΛ༻͍ͯ5ഒ͔Β11ഒͷͰֶशΛߦ͍ ·ͨ͠ɻίʔυ https://github.com/google/automl/ef fi cientnetv2 Ͱެ։͞Ε·͢ɻ
http://arxiv.org/abs/2104.00298v1 Google Research, Brain Team. ˠ& ffi DJFOU/FU7ͷൃදɻ ɹ& ffi DJFOU/FUΛ࣮༻తʹֶशͰ͖ΔΑ͏ʹɺܰྔԽɾߴԽɻ
(ݪจ: Cross-validation: what does it estimate and how well does it do it?) ΫϩεόϦσʔγϣϯɼ༧ଌޡࠩΛਪఆ͢ΔͨΊʹ͘༻͍ΒΕ͍ͯΔख๏Ͱ͋Δ͕ɼͦͷڍಈෳࡶ Ͱ͋Γɼશʹཧղ͞Ε͍ͯͳ͍ɽཧతʹɼΫϩεόϦσʔγϣϯ๏ɼֶशσʔλʹద߹ͨ͠Ϟ σϧͷ༧ଌޡࠩΛਪఆ͢Δͱߟ͍͑ͨɽզʑɺ͜Ε͕௨ৗͷ࠷খೋ๏ʹΑΔઢܗϞσϧͷ߹Ͱͳ ͘ɺಉ͡ूஂ͔Βநग़͞Εͨଞͷݟͨ͜ͱͷͳ͍܇࿅ηοτʹద߹ͨ͠Ϟσϧͷฏۉ༧ଌޡࠩΛਪఆ͢ Δ͜ͱΛূ໌͢Δɻ͞Βʹɺ͜ͷݱɺσʔλׂɺϒʔτετϥοϓɺMallow's CpͳͲɺ༧ଌޡࠩ ͷҰൠతͳਪఆͰى͜Δ͜ͱΛࣔͨ͠ɻ࣍ʹɼΫϩεόϦσʔγϣϯ͔ΒಘΒΕΔ༧ଌޡࠩͷඪ४త ͳ৴པ۠ؒɼ·͍͠ϨϕϧΛΔ͔ʹԼճΔΧόϨοδΛ࣋ͭ߹͕͋Γ·͢ɽ͜Εɼ֤σʔλϙ Πϯτ͕τϨʔχϯάͱςετͷ྆ํʹ༻͞ΕΔͨΊɼ֤ϑΥʔϧυͷଌఆਫ਼ʹ૬͕ؔ͋Γɼ௨ৗͷ ࢄͷਪఆ͕খ͗͢͞ΔͨΊͰ͢ɽ͜ͷࢄΛΑΓਖ਼֬ʹਪఆ͢ΔͨΊʹɼωετͨ͠ΫϩεόϦσʔ γϣϯ๏Λಋೖ͠ɼ͜ͷमਖ਼ʹΑΓɼैདྷͷΫϩεόϦσʔγϣϯ๏Ͱࣦഊ͢ΔΑ͏ͳଟ͘ͷྫͰɼ΄ ΅ਖ਼͍͠ΧόϨοδΛ͕࣋ͭ۠ؒಘΒΕΔ͜ͱΛܦݧతʹࣔͨ͠ɽ࠷ޙʹɺզʑͷੳͰɺ୯७ͳσʔ λׂͰ༧ଌਫ਼ͷ৴པ۠ؒΛ࡞͢Δ߹ɺ৴པ͕۠ؒແޮʹͳΔͨΊɺ݁߹͞ΕͨσʔλʹϞσϧΛ ࠶ద߹ͤ͞Δ͖Ͱͳ͍͜ͱ͍ࣔͯ͠Δɻ http://arxiv.org/abs/2104.00673v2 ΧϦϑΥϧχΞେֶόʔΫϨʔߍˍελϯϑΥʔυେֶ ˠΫϩεόϦσʔγϣϯͷվળɻ୯७ͳΫϩεόϦσʔγϣϯͷ༧ଌਫ਼໊ΑΓ ͘ͳͬͯ͠·͏͕͋ͬͨɻωεςουΫϩεόϦσʔγϣϯ /$7 Λಋೖͨ͠ Β͜ͷ͕վળͨ͠ɻ