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kakubari
March 10, 2017
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B3_Seminar_6
長岡技術科学大学
自然言語処理研究室
角張竜晴
kakubari
March 10, 2017
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Transcript
Ԭٕज़Պֶେֶ ిؾిࢠใֶ՝ఔ ֶ෦ɹ֯ுཽ ࣗવݴޠݚڀࣨ ɹ#̏θϛ ʙୈճʙ ใΞΫηεධՁํ๏
目次 ˔͡Ίʹ ˔جຊత༻ޠͷఆٛ ˔ใΞΫηεγεςϜͷධՁ ˔ద߹ੑఆͷલఏ ˔࠶ݱͱਫ਼ʢద߹ʣ
はじめに త ใݕࡧγεςϜΛݚڀऀ͕దͳํ๏ͰධՁ͠ɺ݈ શͳٕज़ਐาʹߩݙ͢ΔͨΊͷಓےΛࣔ͢ طଘͷධՁࢦඪΛཧղ͠ɺదͳͷΛબͰ͖ΔΑ ͏ʹͳΔ ใࠂॻΛॻ͘͜ͱʹʹཱͭ
基本的用語の定義 ˔ใݕࡧγεςϜ ɹਓؒ͘͠ػցʢ྆͘͠ํʣ͕ద༻͢Δنଇٴͼखଓ ͖ͷू߹ ˔ใݕࡧγεςϜͷׂ ɹϢʔβͷใཁٻΛຬͨ͢จॻʹͦͷϢʔβΛಋ͘͜ͱ ˔ใཁٻ ɹϢʔβ͕͋ΔతΛୡ͢ΔͨΊʹݱࡏ͍࣋ͬͯΔࣝͰ
ෆेͰ͋Δͱײ͍ͯ͡Δঢ়ଶ ˔ݕࡧཁٻ ɹϢʔβͷใཁٻΛςΩετͷܗͰ໌จԽͨ͠ͷ
基本的用語の定義 ˔ద߹ੑ ɹϢʔβͷཁٻʹจॻ͕ͲΕ΄Ͳྑ͘Ϛον͍ͯ͠Δ ͔ ʙใݕࡧධՁͷతʙ ɹϢʔβͷใཁٻΛຬͨͨ͢ΊʹΑΓޮՌతͳγε ςϜΛߏங͢Δ͜ͱ γεςϜΛ٬؍తʹධՁ͠ɺٕज़ਐาΛଅ͢
基本的用語の定義 ใݕࡧγεςϜͷग़ྗ݁Ռͷܗଶ ˔ू߹ݕࡧ ɹೖྗ͞ΕͨΫΤϦʹରͯ͠จॻͷू߹Λग़ྗ͢Δͷ ɹྫ͑ʜ ɹɾಛڐௐࠪͷΑ͏ʹඞཁͳจॻΛݕࡧ ˔ϥϯΫ͖ͭݕࡧ ɹจॻΛͳΜΒ͔ͷํ๏ʹΑΓॱং͚ͮͯग़ྗ͢Δͷ
ɹྫ͑ʜ ɹɾΣϒݕࡧΤϯδϯ
基本的用語の定義 ˔ใΞΫηε ɹϢʔβͷใཁٻΛຬͨͨ͢Ίͷٕज़ͷ૯শ ɹྫ͑ʜ ɹɾςΩετཁ ɹɾ࣭Ԡ ɹɾςΩετྨ ɹɾػց༁
情報アクセスシステムの評価 ඃݧऀ࣮ݧΛͱʹ࣮ࡍͷϢʔβ͕ݕࡧͨ͠ใͷ ࣭ݕࡧͷޮΛ͡ΔΞϓϩʔν ɹখنʹͳΓ͕ͪͰɺ࠶ݱՄೳੑ͕อূͰ͖ͳ͍ ɹ݁ՌͷҰൠԽ͕͠ʹ͍͘ ςετίϨΫγϣϯͱ͍͏ධՁ༻ͷσʔληοτΛ
ධՁࢦඪͱڞʹ༻͍ΔΞϓϩʔν ɹେن͔ͭ࠶ݱՄೳͳ࣮ݧΛߦ͑Δ ɹ Ὃ ɹదͳධՁࢦඪΛબఆ͠ɺదͳํ๏Ͱ༻͢Δ
適合性判定の前提 ˔ద߹ੑͷಠཱੑ ɹ༩͑ΒΕͨݕࡧཁٻʹର͢Δݸʑͷจॻͷద߹ੑɺ ͦͷݕࡧཁٻٴͼͦͷจॻͷΈʹґଘ͢Δ ɾଞͷจॻͷӨڹΛड͚ͳ͍ ɾݕࡧཁٻࣗମ͕มԽ͠ͳ͍ݶΓɺద߹ੑෆม
適合性判定の前提 ˔ద߹ੑͱ༗༻ੑͷҧ͍ ᾇݕࡧཁٻʹର͢Δจॻͷద߹ੑɺจॻίϨΫγϣϯதͷ ଞͷจॻ͔ΒಠཱͰ͋Δɻ ᾈݕࡧཁٻऀʹͱͬͯͷద߹จॻͷ༗༻ੑɺݕࡧཁٻऀ͕ ͢Ͱʹݟͨద߹จॻʹґଘ͢Δ͔͠Εͳ͍ɻ ద߹ੑ༗༻ੑͷඞཁ݅ʹ͗͢ͳ͍ɻ
適合性判定の前提 ˔ఆऀؒෆҰக ɹͲΜͳʹৄࡉʹ໌จԽ͞ΕͨݕࡧཁٻͰ͋ͬͯɺ ͜Εʹର͢Δద߹ੑఆ݁ՌඞવతʹఆऀʹΑͬ ͯҟͳΔ ˔ఆऀෆҰக ɹఆऀ͕࣭ऀࣗͰ͋ͬͨͱͯ͠ఆΛߦ͏࣌ ʹΑͬͯҟͳΔՄೳੑ͕͋Δ
適合性判定の前提 ˔૬ରత࠶ݱ ɹਅͷద߹จॻͷΘΓʹɺෳͷखஈʹΑΓಘͨ ద߹จॻू߹ͷू߹ͷେ͖͞Λ༻͍ͯܭࢉͨ͠࠶ݱ ʢଈͪɺݕࡧӮΕͷগͳ͞ʣ
再現率と精度 "ɿద߹ੑఆʹΑΓఆٛ͞Ε͍ͯΔద߹จॻͷू߹ #ɿใݕࡧγεςϜ͕ݕࡧͨ͠จॻͷू߹ "㱯#ɿݕࡧ͞Εͨద߹จॻ ˔࠶ݱʢ3FDʣɿݕࡧӮΕͷগͳ͞ ˔ਫ਼ʢ1SFDʣɿݕࡧޡΓͷগͳ͞ʢద߹ʣ
Pec = A ∩ B A Prec = A ∩ B B
参考文献 ˔ใΞΫηεධՁํ๏ɺञҪɺ ɹίϩφࣾɺ݄