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過学習と未学習について
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kassy11
April 17, 2024
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過学習と未学習について
kassy11
April 17, 2024
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Transcript
.ദݪޭଠ աֶशͱະֶशʹ͍ͭͯ
ػցֶशɾਂֶशͷֶशͷجຊ • ֶशσʔλΛϞσϧʹೖྗ͠ɺϞσϧ͔Βग़ྗ͞ΕΔ༧ଌͱਖ਼ղͱͷࠩΛଛ ࣦؔͱͯ͠ܭࢉ • ͜ͷࠩΛ܇࿅ޡࠩͱݺͿ • ଛࣦؔతؔɺޡࠩؔͱݺΕΔ •
࠷దԽΞϧΰϦζϜʢ0QUJNJ[FSʣΛͬͯଛࣦؔͷʢʹޡࠩʣ͕খ͘͞ͳ ΔύϥϝʔλΛ୳ͯ͠ɺϞσϧͷύϥϝʔλΛߋ৽ɺ͜͜·ͰΛԿճ܁Γฦ͢ • ֶशޙʹɺֶशͨ͠Ϟσϧʹֶशʹ͍ͬͯͳ͍σʔλʢςετσʔλʣΛೖྗ ͯ͠ɺଛࣦؔΛܭࢉ • ͜ͷࠩΛςετޡࠩͱݺͿ
աֶशʢ0WFS fi Uʣͱະֶशʢ6OEFS fi Uʣ • աֶशɿֶशͨ͠Ϟσϧ͕܇࿅σʔλʹద߹͗ͯ͢͠ɺະσʔλʹਫ਼Λग़ ͤͳ͍ •
ະֶशɿֶशͨ͠Ϟσϧ͕୯७͗ͯ͢ɺ܇࿅σʔλͰ͑͞ਫ਼Λग़ͤͳ͍ • ͬͪ͋͜Μ·ΓͳΒͳ͍ͷͰؾʹ͠ͳ͍͍͔ͯ͘ • ະֶशաֶश͍ͯ͠ͳ͍ϞσϧΛ࠾༻͢Δͷ͕ϕετ ͭͷύϥϝʔλΛ࣋ͭ ֶशࡁϞσϧͷϓϩοτ
Ͳ͏͍͏ঢ়ଶ͕ʮաֶश͍ͯ͠Δʯͱݴ͑Δͷ͔ • ܇࿅ޡࠩԼ͕͍ͬͯΔͷʹɺςετޡ্͕͕͍ࠩͬͯΔঢ়ଶ • ςετޡ͕ࠩେ͖͘ͳ͍ͬͯΔʹະσʔλʹରԠͰ͖ͳ͘ͳ͍ͬͯΔ ଛࣦؔͷϓϩοτ
5FOTPS'MPX࣮शͷ༰ • શ݁߹ʢ%FOTFʣͷΈΛ࣋ͭ//ʹ͍ͭͯɺύϥϝʔλɾΛ૿ͯ͠ ͍ͬͯɺಉ͡σʔληοτͰֶशͨ͠ͱ͖ʹաֶश͢Δ͔֬ೝ͢Δ • ͦͦࠓ'JOF5VOJH͕ϝΠϯͳͷͰɺࣗͰύϥϝʔλɾΛܾΊΔ ͜ͱͦ͜·Ͱͳͦ͞͏ʁ • աֶश͢ΔϞσϧʹ͍ͭͯɺաֶशΛ੍͢Δख๏Ͱ͋Δਖ਼ଇԽΛࢼ͢
ʮաֶश͍ͯ͠Δͱ͖ਖ਼ଇԽͯ͠ΈΔʯͱ͍͏͜ͱ͕ཧղͰ͖Ε0,Ͱ͢ʂ
ਖ਼ଇԽʢ3FHVMBSJ[BUJPOʣ • Ϟσϧͷෳࡶ͞Λ੍͢ΔޮՌʹաֶशΛ͙ • -ਖ਼ଇԽɺ-ਖ਼ଇԽʢ8FJHIU%FDBZʣɺυϩοϓΞτ͕Α͘༻͍ΒΕΔ • ͦΕͧΕΛΈ߹ΘͤΔ͜ͱͰ͖Δ㱺ྫ -ͱ-ͷΈ߹Θͤ&MBTUJD/FU •
ਂֶशʢχϡʔϥϧωοτϫʔΫʣͰ҉తͳਖ਼ଇԽ͕ߦΘΕ͍ͯΔͷͰɺ͋· Γҙࣝ͠ͳͯ͘ྑ͍͔ʁ • ύϥϝʔλ͕ଟͯ͘ɺͦΕʹݟ߹͏σʔλ͕͋Ε͋·Γաֶश͠ͳ͍ʁ • ଞʹաֶशΛ͙ख๏ͱͯ͠ɺσʔλ֦ுʢσʔλΛਫ૿͠ʣόονਖ਼نԽɺ 9BWJFS)FͷॳظʢύϥϝʔλͷॳظΛʣͳͲ͕͋Δ • ˞ਖ਼نԽ /PSNBMJ[BUJPO ͱਖ਼ଇԽΛࠞಉ͠ͳ͍Α͏ʹʂ
ิɿχϡʔϥϧωοτͷ҉తͳਖ਼ଇԽ • χϡʔϥϧωοτϫʔΫɺֶशதʹσʔλͷ͠͞ʹ߹ΘͤͯϞσϧͷ ෳࡶ͞Λࣗಈతʹ੍ޚ͢ΔΈΛ͍࣋ͬͯΔ • 4(%ɺϑϥοτͳ࠷దղɺๅ͘͡Ծઆ • ৄ͘͠ʰେنݴޠϞσϧ৽ͨͳೳ͔ʱʰਂֶशͷݪཧʹഭΔʱʰσΟʔ ϓϥʔχϯάΛࢧ͑Δٕज़ʱ
ิɿേଇ͖࠷దԽ • τϨʔυΦϑͱͳΔ̎ͭͷؔΛಉ࣌ʹ࠷దԽʢ࠷খԽʣ͢Δ͜ͱ • ਖ਼ଇԽേଇ͖࠷దԽͱΈͳ͢͜ͱ͕Ͱ͖Δ • G Y ͱH
Y Λಉ࣌ʹ࠷খԽ͍ͨ͠ɺ͜ͷͭτϨʔυΦϑʢໃ६͢Δʣ • ྫ GՈɺ̶Ӻ͔Βͷۙ͞Ͱ྆ํ࠷খԽ͍ͨ͠ • NJOJNJ[FI Y G Y ЕH Y Λղ͘ • ЕτϨʔυΦϑύϥϝʔλɺͲͪΒΛΑΓॏࢹ͢Δ͔ • ػցֶशɾਂֶशͷ߹ • ܇࿅ޡࠩϞσϧͷෳࡶ͞࠷খԽ͍ͨ͠ • ͜ͷͭτϨʔυΦϑ • GଛࣦؔɺHϞσϧͷෳࡶ͞Λ੍ޚ͢Δ߲
ϊϧϜ • ϕΫτϧۭؒʹ͓͚Δʮڑʯͷఆٛ • ୯ҐԁʢݪΛத৺ͱ͢ΔܘͷԁʣͰද͢ͱ • -ਖ਼ଇԽͰΘΕΔϊϧϜʢQʣɺͨͩͷઈରͷ ͠ࢉͱಉ͡ʹͳΓɺͻ͠ܗʹͳΔ •
-ਖ਼ଇԽͰΘΕΔϊϧϜʢQʣɺϢʔΫϦουڑ ʢҰൠతͳڑʣͱಉ͡ʹͳΓɺԁʹͳΔ • 1ˠ㱣ͷͱ͖ͷ.BYϊϧϜਖ਼ํܗʹͳΔ
--ਖ਼ଇԽ • -ਖ਼ଇԽʹύϥϝʔλͷϊϧϜͷਖ਼ଇԽ߲ΛଛࣦؔʹՃ͑ͯɺҰॹʹ࠷খԽ • -ਖ਼ଇԽʹύϥϝʔλͷϊϧϜͷਖ਼ଇԽ߲ΛଛࣦؔʹՃ͑ͯɺҰॹʹ࠷খ • 㱺ͱʹύϥϝʔλ͕େ͖͍ΛऔΒͳ͍Α͏ʹ੍ • -ਖ਼ଇԽΛͨ͠ճؼΛϥοιճؼɺ-ਖ਼ଇԽΛͨ͠ճؼΛϦοδճؼͱݺͿ
ЕЄccXcc ˠ-ਖ਼ଇԽ NJOJNJ[F-PTT X ЕЄccXcc ˠ-ਖ਼ଇԽ ɹɹɹɹɹɹɹɹɹɹɹ˞Еɿਖ਼ଇԽύϥϝʔλ
--ਖ਼ଇԽͷҙຯ • ଛࣦؔͷߴઢͱਖ਼ଇԽ߲ͷߴઢ͕͢Δͱ͜ΖΛݟΔ • ଛࣦؔͷ࠷దղ͕ʹҾͬுΒΕΔΠϝʔδ • -ਖ਼ଇԽˠύϥϝʔλͷ͕ݪํʹҾͬுΒΕͯ શମతʹখ͘͞ͳΔ •
-ਖ਼ଇԽˠ͍͔ͭ͘ͷύϥϝʔλͷ͕ʹͳΔ ʹෆཁͳύϥϝʔλ͕ΒΕΔ ʢਤͷ߹X͕ΒΕͨʣ -ਖ਼ଇԽ -ਖ਼ଇԽ
υϩοϓΞτ • ϛχόον͝ͱʹҰఆͷ֬ͰબΜͩχϡʔϩϯΛϥϯμϜʹʹ͢Δʹ༻͠ ͳ͍Α͏ʹ͢Δ • ಛఆͷχϡʔϩϯʢύϥϝʔλʣͷґଘΛݮΒ͢͜ͱͰաֶशΛ੍Ͱ͖Δ • ϛχόονຖʹҧ͏Ϟσϧֶ͕श͞ΕΔʹΞϯαϯϒϧֶशͱಉ༷ͷޮՌ͕͋Δ •
ෳϞσϧΛ༻͍ͯΑΓྑ͍༧ଌ݁ՌΛಘΔ͜ͱ • όονਖ਼نԽͱ૬ੑ͕ྑ͘ͳ͍
ࢀߟจݙʢͱ͍͏͔ಈըʣ • ஜେػցֶश0$8 • --ਖ਼ଇԽͷҙຯʲػցֶशʳ • ʲ%FFQ-FBSOJOHݚमʢൃలʣʳগͳ͍σʔλϥϕϧΛޮతʹ׆༻͢Δͨ Ίͷػցֶशٕज़ɹୈ̎ճʮσʔλ֦ுɾਖ਼ଇԽʯલฤ