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09NLP-ishisaka.pdf
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自然言語処理研究室
July 03, 2013
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09NLP-ishisaka.pdf
自然言語処理研究室
July 03, 2013
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Transcript
ʮ֎ͷؔʯͷෳจ͔Β ୯จͷݴ ᶃ Ԭٕज़Պֶେֶ ిؾܥ ੴࡔୡ ࢁຊӳ
ᶄ ͡Ίʹ ෳจΓड͚͕ؔෳࡶ ˠղੳޡΓ͕ى͜Δ ୯จݴ ˠղੳޡΓ͕ݮগ ෳจ࿈ମम০અΛؚΉ߹͕ଟ͍
ʮ֎ͷؔʯͱʮͷؔʯʹྨ ࣉଜ ֎ͷؔͷݴΛѻͬͨݚڀͳ͍ ͷؔͷݴ͕ओྲྀ ֎ͷؔͷෳจͷݴํ๏ΛఏҊ
ᶅ ֎ͷؔͱ ༻ݴͱఈͷ໊ࢺͷؒʹ͕֨ؔΓཱͨͳ͍ ࿈ମम০અ (ྫ) ֊ஈΛ߱ΓΔԻ ༻ݴ ఈͷ໊ࢺ ֨ؔΓཱͨͳ͍
จׂʹ͓͍ͯͷ ఈͷ໊ࢺҙຯʹΑͬͯಇ͖͕ҟͳΔ ఈͷ໊ࢺΛ̑छྨʹྨٖͯ͠ࣅతʹҙຯΛଊ͑Δ
ܗ໊ࣜࢺ ᶆ ఈͷ໊ࢺ ܗ໊ࣜࢺˠʮ͜ͱʯɺʮͷʯ ͳͲ ࿈ମઅͱओઅͷରԠΛͱΔׂ
୯७ͳׂͰܗ໊ࣜࢺͷΓݩ͕ෆ໌ ܗ໊ࣜࢺΛʮ͜Εʯʹݴ ೖྗจ/ຊख๏/୯७ͳݴ ଟ͘ͷ٘ਜ਼ऀ͕ग़ͨ͜ͱʹରͯ͠ਂ͍൵͠ΈΛ֮͑ͨɻ ଟ͘ͷ٘ਜ਼ऀ͕ग़ͨɻ͜Εʹରͯ͠ਂ͍൵͠ΈΛ֮͑ͨɻ ଟ͘ͷ٘ਜ਼ऀ͕ग़ͨɻ͜ͱʹରͯ͠ਂ͍൵͠ΈΛ֮͑ͨɻ
ײ֮Λද໊͢ࢺ,෭ࢺతׂͷ໊ࢺ ᶇ ఈͷ໊ࢺ ײ֮Λද໊͢ࢺ ˠ ʮ͍ʯʮຯʯ ͳͲ
෭ࢺతׂͷ໊ࢺ ˠ ʮ߹ʯʮ࣌ʯʮ్தʯͳͲ ׂޙͷ̎ͭͷग़ྗจʹؔ࿈ੑ͕ͳ͘ͳΔ ࢦࣔࢺʮͦͷʯΛՃ ೖྗจ/ຊख๏/୯७ͳݴ ൴ே৯Λ࡞Δ͍Ͱى͖ͨɻ ே৯Λ࡞Δɻ൴ͦͷ͍Ͱى͖ͨɻ ே৯Λ࡞Δɻ൴͍Ͱى͖ͨɻ
ະདྷΛࣔࠦ͢Δ໊ࢺ ᶈ ఈͷ໊ࢺ ʮ༧ఆʯʮܭըʯʮํʯͳͲ ʮͭΓʯʹݴ͢Δ͜ͱͰ୯จʹͳΔ ೖྗจ ट૬େ౷ྖͱձஊ͢Δ༧ఆͩɻ
ग़ྗจ ट૬େ౷ྖͱձஊ͢ΔͭΓͩɻ
ᶉ ఈͷ໊ࢺ ͦͷଞͷ໊ࢺ ࿈ମम০અΛͬͨจ ˠ ࿈ମઅจ ೖྗจ͔Β࿈ମम০અΛൈ͖ग़ͨ͠Γ
ˠ ओઅจ ʮͱ͍͏ʴఈͷ໊ࢺʯΛ࿈ମઅจʹՃ͢Δ ೖྗจ/ຊख๏/୯७ͳݴ ϓϩδΣΫτͷ࠾ࢉੑΛ্ͤ͞Δख๏͕͕͍ͬͯΔɻ ख๏͕͕͍ͬͯΔɻϓϩδΣΫτͷ࠾ࢉੑΛ্ͤ͞Δͱ ͍͏ख๏ɻ ख๏͕͕͍ͬͯΔɻϓϩδΣΫτͷ࠾ࢉੑΛ্ͤ͞Δɻ
࿈ମम০અͷಉఆᶊ ੜ࢈ྔͷ / ͕ۙ͘ / ҰͰ / ૿͑Δ / ܭࢉͩɻ
અ̍ʺ ࿈ମम০અ અ̎ = ࿈ମम০અ ໊ࢺ ໊ࢺ ಈࢺ ֨ॿࢺ B͔ͭ CͷઅΛ࿈ମम০અͱ͢Δ a. અͷ࠷ޙͷޠ͕ಈࢺ͔ॿಈࢺ b. અͷޙํʹྡ͢Δޠ໊͕ࢺ
ᶋ ධՁ࣮ݧ ධՁ༰ શͯਓखͰධՁ ຊख๏Ͱಉఆͨ͠࿈ମम০અͷਖ਼ղ/ෆਖ਼ղ ݴޙͷจͷՄಡੑͱ༰Ұகੑ
࣮ݧσʔλ ࿈ମम০અΛؚΉෳจ ̎̔̔จ ֎ͷؔΛؚΉෳจ จ ຊܦࡁ৽ฉΑΓਓखͰநग़
ධՁ݁Ռ ಉఆͨ͠࿈ମम০અͷਖ਼ղ/ෆਖ਼ղ ධՁ ֘จ/શจ ਖ਼ղ 237/288 (82%) ෆਖ਼ղ 51/288
(18%) ݴޙͷՄಡੑ ධՁ ֘จ/શจ ධՁ̍ (PPE 54/80 (68%) ධՁ̎ 21/80 (26%) ධՁ̏ #BE 5/80 (6%) ᶌ ఏҊख๏68ˋͷ֎ͷؔͷෳจʹ༗ޮͰ͋Δ
ᶍ ߟ ࿈ମम০અಉఆ̍ ෆਖ਼ղจ ఈͷ໊ࢺ͕ʮͷʯ ྫ ࢲ /
ମΛ/ ಈ͔͢ͷ͕ / ͖ͩɻ ༻ݴͱఈͷ໊ࢺ͕ಉ͡จઅʹͳͬͨ จઅ͝ͱʹॲཧ͍ͯ͠ΔͨΊಉఆࣦഊ ରॲͱ ʮͷʯΛʮ͜ͱʯʹݴग़དྷΕಉఆՄೳ ʮͷʯʹෳͷ༻๏͕͋Δ ˠ දใ͚ͩͰผࠔ
ᶎ ߟ ࿈ମम০અಉఆ̎ ෆਖ਼ղจ ఈͷ໊ࢺ͕ʮ"ͷ#ʯͱ͍͏໊ࢺઅ ྫ ࢼ߹ʹग़ͨ͠ϚϦφʔζͷΠνϩʔʜ
ߏจղੳ݁Ռ ˠ ʮࢼ߹ʹग़ͨ͠ʯͷʮϚϦφʔζʯ ਖ਼ղ ˠ ʮࢼ߹ʹग़ͨ͠ʯͷʮΠνϩʔʯ ରॲͱ ڞى֬ͳͲͰਖ਼֬ͳఈͷ໊ࢺΛಉఆ "ʹΔ߹͋Δ A B
ᶏ ߟ Մಡੑ ఈͷ໊ࢺ͕ಉ͡Ͱࣗવ͕͞ҟͳΔ ྫ త ೖྗจग़ྗจग़ྗจ̎ ಉΫϥϒ13άοζΛاը͢ΔతͰൃɻ ಉΫϥϒతͰൃɻ
ෆࣗવ 13άοζΛاը͢Δͱ͍͏తɻ ೖྗจग़ྗจग़ྗจ̎ ͕࣋ͪגൺΛաʹҾ্͖͛Δత͕͋ͬͨɻ త͕͋ͬͨɻ ࣗવ ͕࣋ͪגൺΛաʹҾ্͖͛Δͱ͍͏తɻ ରࡦ ఈͷ໊ࢺΛؚΉจઅʹணจ຺ͷߟྀ ̍ͭͷఈͷ໊ࢺʹରͯ͠ෳͷنଇ
ᶐ ߟ ༰Ұகੑ ༰ෆҰகͳจ ༻ݴͱఈͷ໊ࢺ͕ҼՌؔ ೖྗจ ॓ΛΕͨേͰ࿓ԼʹཱͨͤΒΕͨɻ ग़ྗจ̍
ग़ྗจ̎ ॓ΛΕͨͱ͍͏േɻ േͰ࿓ԼʹཱͨͤΒΕͨɻ ʷʮേʯͷ༰ ˠ ॓ΛΕͨ ˓ʮേʯͷ༰ ˠ ࿓ԼʹཱͨͤΒΕͨ දใͷΈͰͷҼՌؔͷ༗ແͷఆࠔ
ᶑ ͓ΘΓʹ ֎ͷؔͷෳจ͔Β୯จͷݴख๏ΛఏҊ ̑ͭنଇΛ༩͑ͯจׂΛߦ͏ख๏ දͷใ͔ΒҙຯΛٖࣅతʹଊ͑ͨ ୯จͷՄಡੑ68ˋ
نଇΛՃ͢Δ͜ͱͰਫ਼ͷ্͕ݟࠐ·ΕΔ
୯จͱෳจͷఆٛ ୯จ ̍ͭͷड़ޠͰΓཱ͍ͬͯΔจ ಈࢺɺܗ༰ಈࢺɺෳ߹ಈࢺɺܗ༰ࢺɺ໊ࢺʴػೳ ޠͷ̑ύλϯΛड़ޠͱ͢ΔʢࢁΒ,200̍ʣ ʮͱ͍͏+໊ࢺʯͰऴΘ͍ͬͯΔจ
ʢྫʣߍֶ͕ߍΛࣙΊΔͱ͍͏ӟɻ ෳจ ෳͷड़ޠͰΓཱ͍ͬͯΔจ
ิ:ͷؔͱ ༻ݴͱఈͷ໊ࢺͷؒʹ͕֨ؔΓཱͭ࿈ମ म০અ (ྫ) ֊ஈΛ߱ΓΔਓ ʮਓ͕߱ΓΔʯ ͕֨ؔΓཱͭ ༻ݴ ఈͷ໊ࢺ
֨ॿࢺΛิ͏͜ͱͰ୯จʹݴՄೳ