ֶज़৘ใݕࡧͱਪન ܡҪ ຑཬҥ ಉࢤࣾେֶ ཧ޻ֶ෦ ΠϯςϦδΣϯτ৘ใ޻ֶՊ :"/4

ߨԋऀ঺հ ܡҪ ຑཬҥ ೥݄ ๺ւಓେֶ޻ֶ෦৘ใΤϨΫτϩχΫεֶՊଔۀ ೥݄ ๺ւಓେֶେֶӃ৘ใՊֶݚڀՊϝσΟΞωοτϫʔΫઐ ߈म࢜՝ఔमྃ ೥݄ ೔ຊֶज़ৼڵձಛผݚڀһ %$ ೥݄ ๺ւಓେֶେֶӃ৘ใՊֶݚڀՊϝσΟΞωοτϫʔΫઐ ߈ത࢜ޙظ՝ఔमྃ ത࢜ʢ৘ใՊֶʣ ೥݄ ೔ຊֶज़ৼڵձಛผݚڀһ 1% ೥݄ ಉࢤࣾେֶཧ޻ֶ෦৘ใγεςϜσβΠϯֶՊॿڭ ೥݄ ಉࢤࣾେֶཧ޻ֶ෦ΠϯςϦδΣϯτ৘ใ޻ֶՊॿڭ ೥݄ ʏ ।ڭत ΧλΧφֶՊ͹͔ΓͷܦྺͰ͢ʜ

ֶज़ݚڀΛऔΓר͘ࣄ৘ ిࢠδϟʔφϧͷ੒௕ ͋ΔௐࠪʹΑΔͱίϯϐϡʔλαΠΤϯεܥͷݚڀऀ͕ಡΜͰ͍Δ࿦จ͸ ฏۉ ݄ຊʢʹ೥ຊʣʂ <5FOPQJS > ⻘線：英語論⽂誌の数 ⾚線：増加率 ൈਮݩʀ3+PIOTPO "8BULJOTPO BOE.8BCF l5IF45.SFQPSU"OPWFSWJFXPGTDJFOUJGJDBOETDIPMBSMZ QVCMJTIJOH zUIFEJUJPO 0DU $5FOPQJS -$ISJTUJBO +,BVGNBO l4FFLJOH 3FBEJOH BOE6TFPG4DIPMBSMZ"SUJDMFT"O*OUFSOBUJPOBM4UVEZPG1FSDFQUJPOTBOE#FIBWJPSPG 3FTFBSDIFST z 1VCMJDBUJPOT WPM OP

ݚڀऀΛࢧ͑ΔݕࡧΤϯδϯ IUUQTTDIPMBSHPPHMFDPKQ

(PPHMF4DIPMBSͷݕࡧΞϧΰϦζϜ • ʮ࿦จͷϑϧςΩετɺग़൛৔ॴɺஶऀɺඃҾ༻ճ਺ɺඃҾ༻ͷ઱౓ΛߟྀʯCZ(PPHMF IUUQTTDIPMBSHPPHMFDPNJOUMKBTDIPMBSBCPVUIUNM

(PPHMF4DIPMBSͷݕࡧΞϧΰϦζϜ • ʮ࿦จͷϑϧςΩετɺग़൛৔ॴɺஶऀɺඃҾ༻ճ਺ɺඃҾ༻ͷ઱౓ΛߟྀʯCZ(PPHMF ༗໊ͳஶऀʁ ͍ͭͷҾ༻͕ଟ͍ʁ ༗໊ͳδϟʔφϧʁ ඃҾ༻਺͸ଟ͍ʁ

ஶऀͷධՁࢦඪ • ࠷΋؆ศͳࢦඪ͸ʮ࿦จ਺ʯɻ ࿦จ਺ • ࣭Λߟྀ͍ͯ͠ͳ͍ͱ͍͏໰୊͕͋Δɻ

ඃҾ༻ • ଞऀ͔Βࢀߟʹ͞ΕΔ࿦จ͸࣭͕ߴ͍ͱԾఆɻ ࢀߟจݙ

ஶऀͷධՁࢦඪ IJOEFY<)JSTDI 1/"4 > • ࿦จͷੜ࢈ੑͱӨڹྗͷ྆ํΛଌఆ͠Α͏ͱ͢Δࢦඪɻ ࿦จΠϯσοΫε ඃҾ༻਺ ඃҾ༻਺ɿ IJOEFY JJOEFY （被引⽤数10以上 の論⽂数） "͞Μ +&)JSTDI "OJOEFYUPRVBOUJGZBOJOEJWJEVBMTTDJFOUJGJDSFTFBSDIPVUQVU z 1SPDFFEJOHTPGUIF/BUJPOBM"DBEFNZPG4DJFODF WPM OP QQr • ௚ۙ೥ͷؒʹग़൛͞Εͨ࿦จʹ͍ͭͯࢉग़ͨ͠৔߹ɿIJOEFY • Լهͷར఺͔Βٸ଎ʹ஫໨ΛूΊͨ ɿ • Ҿ༻ͷͳ͍࿦จ΍ฏۉҎ্ͷҾ༻਺Λ΋ͭ࿦จͳͲɺۃ୺ͳ஋ʹӨڹ͞Εͳ͍ɻ • 8FCPG4DJFODFͳͲͷσʔλϕʔεʹऩ࿥͞Ε͍ͯΔඃҾ༻ճ਺Λιʔτ͢Δ͚ͩͰ؆୯ʹࢉग़Ͱ͖Δɻ • ୯Ұͷ஋ͷൺֱͰࡁΉɻ

IJOEFYͷ೿ੜɺHJOEFY<&HHIF *44*/FXTMFUUFS > l ඃҾ༻਺ॱͰ࿦จΛฒ΂ͨͱ͖ɼ্Ґ(ݸͷ࿦จ͕গͳ͘ͱ΋(ճͷҾ༻Λड͚ΔΑ͏ͳʢ།Ұ ͷʣ࠷େͷ਺ɻ • HJOEFY͸্Ґͷ࿦จ͕߹ΘͤͯͷඃҾ༻਺Λಘͨ͜ͱΛࣔ͢ɻ • ඃҾ༻਺͕ඇৗʹଟ͍࿦จΛߴ͘ධՁ͢Δ఺͕IJOEFYͱͷࠩҟɻ • શͯͷൃද࿦จͷฏۉඃҾ༻਺͕ൃද࿦จͷ૯਺Λ௒͑ͨ৔߹ʹ͏·͘ධՁͰ͖ͳ͍ͱ͍ ͏ܽ఺Λ΋ͭɻ l ଞʹ΋IJOEFYͷ೿ੜ͕਺ଟ͘ఏҊ͞Ε͍ͯΔ͕ɺ͍ͣΕ΋ࢉग़͕ෳࡶͰ͋ͬͨΓܽ఺Λ๊͍͑ͯ ΔͨΊɺIJOEFYɺHJOEFYɺ૯ඃҾ༻਺ͷछྨ͕༻͍ΒΕΔ͜ͱ͕ଟ͍ɻ ࿦จΠϯσοΫε ඃҾ༻਺ ඃҾ༻਺ɿ IJOEFY HJOEFY "͞Μ

IJOEFYʹର͢Δ਺ʑͷࢦఠ • IJOEFYͷߴ͍ݚڀऀ͸ɼଟ͘ͷڞஶऀʢ૯਺ਓҎ্ʣΛ΋ͪɺޓ͍ʹҾ༻͋͠͏͜ͱ͕ଟ͍ <.BTJD#FHJD >ɻ • ڞஶ࿦จ͕ଟ͍΄Ͳ࿦จ਺ɺඃҾ༻਺͕૿Ճ͢Δ͜ͱ͸Α͘஌ΒΕ͍ͯΔɻ • ஶऀͷ͸IJOEFY͕ʙͰ͋Γɺ΄ͱΜͲͷஶऀ͸ޓ͍ʹ۠ผΛ͚ͭΔ͜ͱ͕೉͍͠ <$SFTQP4JNPFT 442 >ɻ • IJOEFYͷࢉग़ର৅Ͱ͋ΔI಺ʹೖΒͳ͍࿦จΛධՁͰ͖ͳ͍ɻ ڞஶऀͷྠ ඞͣ͠΋ສೳͳࢦඪͰ͸ͳ͍͜ͱʹ஫ҙ͢Δඞཁ͕͋Δɻ

ग़൛৔ॴʢδϟʔφϧɺࠃࡍձٞͳͲʣͷධՁࢦඪ • ஶऀͷͱ͖ͱಉ༷ʹIJOEFYܥͷࢦඪ͕ࢉग़͞ΕΔɻ δϟʔφϧ IF(y) = ʢy-1೥ͷܝࡌ࿦จ਺ʣʴʢy-2೥ͷܝࡌ࿦จ਺ʣ y-1೥ɺy-2೥ͷܝࡌ࿦จ͕Z೥ʹҾ༻͞Εͨճ਺ ௚ۙ೥ؒͷඃҾ༻਺͕ଟ͍ॱʹ ࿦จΛιʔτ … IJOEFY • *NQBDUGBDUPS *' ͱ͍͏ࢦඪ΋༗໊ɻ͜Ε͸ग़൛৔ॴಛ༗ͷࢦඪɻ

Ҿ༻จԽͷҧ͍ʹ΋஫ҙ͢Δඞཁ͕͋Δ • Ҿ༻ͷ͞Εํ͸෼໺ʹΑͬͯେ͖͘ҟͳΔͨΊɺಉҰ෼໺಺ͰͷධՁʹ͔͠࢖͑ͳ͍ɻ • ೥݄ݱࡏɺ֤෼໺ͷIJOEFYτοϓࡶࢽ͸ҎԼͷͱ͓Γɻ˞(PPHMF4DIPMBS.FUSJDTΑΓ • ίϯϐϡʔλϏδϣϯɿ$713 *$$7 &$$7 • ܭࢉݴޠֶɿ"$- &./-1 )-5/""$- • ਤॻؗ৘ใֶɿ4DJFOUPNFUSJDT +PVSOBMPGUIF"TTPDJBUJPOGPS*OGPSNBUJPO4DJFODFBOE 5FDIOPMPHZ +PVSOBMPG*OGPSNFUSJDT • Ҩ఻ֶɾήϊϛΫεɿ/BUVSF(FOFUJDT (FOPNF#JPMPHZ • ݐஙɿ#VJMEJOHT -JHIUJOH3FTFBSDI5FDIOPMPHZ • Ҿ༻཰΋෼໺ʹΑͬͯҟͳΔɻ • ࡉ๔ੜ෺ֶͷ্Ґࡶࢽͷ*'͸໿ɻ • ਺ֶͷ্Ґࡶࢽͷ*'͸໿ɻ

(PPHMF4DIPMBSͷΞϧΰϦζϜௐࠪ <#FFM +41 > • ༷ʑͳݕࡧΫΤϦΛ༻͍ͯ࿦จݕࡧ݁ՌΛऩू͠ɺඃҾ༻ճ਺ɾޠͷग़ ݱස౓ɾग़൛೔ͱදࣔॱҐͷؔ܎ΛϓϩοτɻҎԼͷ͜ͱ͕ࣔࠦ͞Εͨɻ ü ඃҾ༻ճ਺ͷଟ͞͸ॱҐʹେ͖͘Өڹ͢Δɻ ü ΫΤϦͷޠ͕۟ग़ݱ͢Δճ਺͸Өڹ͠ͳ͍ɻͨͩ͠ɺλΠτϧʹೖ͍ͬͯΔ ํ্͕Ґʹ͘Δɻ ü ݕࡧΫΤϦͷಉٛޠ͸ߟྀ͞Ε͍ͯͳ͍ɻ ü ΫΤϦޠ۟Λஶऀ໊ʹ΋ͭͱ্Ґʹ͘Δɻ +#FFM #(JQQ BOE&8JMEF l"DBEFNJD4FBSDI&OHJOF0QUJNJ[BUJPO "4&0 0QUJNJ[JOH4DIPMBSMZ-JUFSBUVSFGPS(PPHMF4DIPMBSBOE$P z+PVSOBM PG4DIPMBSMZ1VCMJTIJOH WPM OP QQ +BOVBSZ 8IJUF-&% ˠ8IJUF͞Μ͕ݕࡧ݁Ռʹʜ ඃ Ҿ ༻ ε ί Ξ ݕࡧ݁ՌͷॱҐ ಉٛޠΛొ৔ ͤͨ͞ํ͕ ݕࡧʹ༗རʜ λΠτϧ͸ ॏཁʜ

(PPHMF4DIPMBSͷϦόʔεΤϯδχΞϦϯά <3PWJSB 1%-* > • (PPHMF4DIPMBSͷ֤छࢦఆݕࡧʹΑΔॱҐ͸ඃҾ༻਺͚ͩͰ࠶ݱͰ͖Δ͔Λௐࠪɻ • Ͳͷݕࡧํ๏ʹ͓͍ͯ΋ඃҾ༻਺ʹΑΔϥϯΩϯά݁ՌͱͷεϐΞϚϯॱҐ૬ؔ܎਺͕Ҏ্ͱ ͳͬͨɻ ໊ࣈͰݕࡧ ग़൛৔ॴ໊Ͱݕࡧ ೥Ͱݕࡧ ඃҾ༻਺ʹΑΔ ϥϯΩϯά $3PWJSB '(VFSSFSP4PMÉ -$PEJOB l3FDFJWFEDJUBUJPOTBTBNBJO4&0 GBDUPSPGHPPHMFTDIPMBSSFTVMUTSBOLJOH z 1SPGFTJPOBMEF-B*OGPSNBDJPO WPM OP QQr ඃҾ༻਺͕ଟ͍࿦จ͕ࠓޙ΋஫໨ΛूΊΔͱ͍͏ ϚγϡʔޮՌΛ૿େͤ͞Δ࢓૊Έʁ

༨ஊɿ(PPHMF4DIPMBS͔Βͷσʔλऩू • σʔλऩू༻"1*͸ఏڙ͞Ε͍ͯͳ͍ʢʂʣ • εΫϨΠϐϯάΛ܁Γฦ͢ʹ͸$"15$)"Λղ͘ඞཁ͕͋Δɻ • (PPHMF4DIPMBS্ͷສຊ෼ͷ࿦จσʔλΛ෼ੳͨ͠νʔϜ͸ɺϲ݄͔͚ͯखಈͰ $"15$)"Λղ͖ଓ͚ͨͱͷ͜ͱ <&MTF>ɻ )&MTF l)PX*TDSBQFEEBUBGSPN(PPHMF4DIPMBS z/BUVSF/&842" IUUQTXXXOBUVSFDPNBSUJDMFTE ϙνʜ ϙνʜ

࿦จݕࡧͱ࿦จਪન • ࿦จΛݕࡧ͢Δʹ͸ॴ๬ͷ಺༰ΛΫΤϦͱͯ͠໌֬ʹೖྗ͢Δඞཁ͕͋Δɻ • Ұํɺؔ࿈͢Δ࿦จΛޮ཰తʹ஌Γ͍ͨͱ͍͏χʔζʹ౴͑Δͷ͕࿦จਪનͰ͋Δɻ (MPCBMͳ࿦จਪન MPDBMͳ࿦จਪન ೳಈతʹݕࡧ͢Δͷ͕ ͭΒ͍ͷʜ ؔ࿈͢Δ࿦จΛ ͓͢͢Ί͢ΔΑʂ ࢲʹͽͬͨΓͷ ࿦จͩΘʂʂʂ จষʹର͠Ҿ༻͢΂͖จݙΛਪન l-PDBUJOHTDJFOUJGJDTQFDJGJDDPOUFOU GSPNBMBSHFDPSQPSBJTDSVDJBMUP SFTFBSDIFST< >z ࿦จͷओͳ಺༰ʹ஫໨ ຊߨԋͰ͸ͪ͜ΒΛ঺հ

࿦จਪનख๏ͷΧςΰϥΠζ ڠௐϑΟϧλϦϯάख๏ ίϯςϯτϕʔεख๏ άϥϑຒΊࠐΈख๏ ϋΠϒϦου Ϣʔβͷڵຯ ࿦จͷ಺༰ 4JNJMBS 4JNJMBS Ҿ༻ Ҿ༻

ڠௐϑΟϧλϦϯά DPMMBCPSBUJWFGJMUFSJOH$' • ଞϢʔβͷධՁ৘ใΛ༻͍Δਪનख๏ɻ • &ίϚʔεͰͷਪનͱ͸ҟͳΓɺ࿦จਪનͰ͸ϢʔβΛߟ͑ͣࢀߟจݙϦετΛ༻͍Δ͜ͱ͕ଟ͍ɻ Ø ࿦จʹϨʔςΟϯάΛ༩͑Δͷ͸໘౗ͳͨΊ <:BOH+$%->ɻ 映画1 映画2 映画3 映画4 … Ϣʔβ 5 3 2 Ϣʔβ 3 2 3 Ϣʔβ 5 2 3 ʜ 論⽂1 論⽂2 論⽂3 論⽂4 … ࿦จ 0 1 0 0 ࿦จ 0 0 0 0 ࿦จ 0 0 0 1 ʜ ঎඼΍өըͷਪન ߦ͕Ϣʔβɺྻ͕ΞΠςϜͷ ϨʔςΟϯάߦྻ ࿦จਪન ߦ͕Ҿ༻ݩ࿦จɺྻ͕Ҿ༻ઌ࿦จͷ ೋ஋ߦྻ

ڠௐϑΟϧλϦϯάʹΑΔ࿦จਪન <.D/FF$4$8`> • ߦͱྻΛ࿦จͱͯ͠ߏஙͨ͠Ҿ༻ߦྻʹ͓͍ͯ L/FBSFTU/FJHICPS L// $'Λ࣮ߦɻ • ߦϕΫτϧؒͷίαΠϯྨࣅ౓Λࢉग़͠ɺΫΤϦ࿦จͱͷྨࣅ౓্͕Ґ L ݅ͱͳΔ࿦จΛબग़ɻ • ֤ۙ๣ͷҾ༻ঢ়گΛྨࣅ౓ͰॏΈ෇͚ͯ͠౤ථɻ … p50 p51 p52 p53 p54 … p1 p2 p3 p4 p5 … … … … … … … ΫΤϦ ࿦จ TJNJMBS Lۙ๣ Lۙ๣͔Βͷ౤ථ ֤ۙ๣ͱͷྨࣅ౓ 4..D/FF FUBM l0OUIFSFDPNNFOEJOHPGDJUBUJPOTGPSSFTFBSDIQBQFST zJO1SPD$4$8 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 Pa,i = ¯ ra + P u2N (ru,i ¯ ru) ⇥ sim(a, u) P u2N sim(a, u) ˞Ұൠʹ6TFSCBTFEL//$'ͱݺ͹ΕΔࣜ pa , pi ؒͷྨࣅ౓ ࢀߟจݙ

ڠௐϑΟϧλϦϯάʹΑΔ࿦จਪન <.D/FF$4$8`> • ྻϕΫτϧؒʢʹඃҾ༻࿦จؒʣͷྨࣅ౓Λར༻͢Δόʔδϣϯ΋͋Δɻ … p50 p51 p52 p53 p54 … p1 p2 p3 p4 p5 … … … … … … … ΫΤϦ ࿦จ TJNJMBS 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 Pa,i = P j2Ni ra,j ⇥ sim(i, j) P j2Ni sim(i, j) ˞Ұൠʹ*UFNCBTFEL//$'ͱݺ͹ΕΔࣜ Lۙ๣ Lۙ๣͔Βͷ౤ථ ֤ۙ๣ͱͷྨࣅ౓ ࢀߟจݙ • ͍ͣΕͷ$'΋(PPHMFݕࡧʹൺ΂ͯ৽ͨͳ࿦จΛൃݟ͢Δͷʹ໾ཱͬͨɻ

ڠௐϑΟϧλϦϯάͰ༻͍Δߦྻͷվྑ <-JV*&&&"DDFTT > • ଞͷҾ༻ݩจݙ͔Βજࡏతͳؔ܎Λਪఆ͢Δ$POUFYUCBTFE$PMMBCPSBUJWF'JMUFSJOHΛఏҊɻ )-JV 9,POH 9#BJ 88BOH 5.#FLFMFBOE'9JB $POUFYU#BTFE$PMMBCPSBUJWF'JMUFSJOHGPS$JUBUJPO3FDPNNFOEBUJPO *&&&"DDFTT WPM QQ p5 p6 p1 p2 p3 p4 p1 ͱ p4 ͸ಉ͡࿦จΛҾ༻ ͍ͯ͠ͳ͍͕ɺp2 p3 ͔Β ؔ࿈ੑΛݟ͍ͩͤΔ p2 ͔ΒҾ༻ p2 ͔ΒҾ༻ ͞Ε͍ͯͳ͍ p1 ͔ΒҾ༻ N11 N12 p1 ͔ΒҾ༻ ͞Ε͍ͯͳ͍ N21 N22 ˠ෼ׂද͔Β p1 ͱ p2 ͷؔ܎ͷڧ͞ΛఆྔԽ͠ɺ ᮢ஋ॲཧͯ͠$'༻ͷߦྻཁૉͱ͢Δɻ • ,%%$VQσʔληοτͰ࣮ݧͨ݁͠Ռɺී௨ͷ$'ΑΓ΋ߴਫ਼౓ͳਪનΛୡ੒ͨ͠ɻ

ڠௐϑΟϧλϦϯάϕʔεͷ໰୊఺ • ߦྻ͕ඇৗʹεύʔεͰ͋Γɺ͔ͭཁૉͷ༏ྼ͕ෆ໌ྎɻ 映画1 映画2 映画3 映画4 … Ϣʔβ 5 3 2 Ϣʔβ 3 2 3 Ϣʔβ 5 2 3 ʜ 論⽂1 論⽂2 論⽂3 論⽂4 … ࿦จ 0 1 0 0 ࿦จ 0 0 0 0 ࿦จ 0 0 0 1 ʜ ঎඼΍өըͷਪન ü Ϣʔβ͕ͨ͘͞Μ͍Δ ü ޷͖ݏ͍ͷ৘ใ͕͋Δ ࿦จਪન ü Ұͭͷ࿦จ͔Βͷ౤ථ͕গͳ͍ ü ೋ஋Ͱ͋ΓҾ༻Λશͯ౳͘͠ѻ͏

࿦จਪનख๏ͷΧςΰϥΠζ ڠௐϑΟϧλϦϯάख๏ ίϯςϯτϕʔεख๏ άϥϑຒΊࠐΈख๏ ϋΠϒϦου Ϣʔβͷڵຯ ࿦จͷ಺༰ 4JNJMBS 4JNJMBS Ҿ༻ Ҿ༻

ίϯςϯτϕʔεͳ࿦จਪન • ࿦จͷλΠτϧɺΞϒετϥΫτɺΩʔϫʔυͳͲͷςΩετ৘ใ͔Βஶऀ΍࿦จͷ಺༰Λਪఆɻ • ύʔιφϥΠθʔγϣϯਪનͳͲ΋Α͘ఏҊ͞Ε͍ͯΔɻ ஫ҙ఺ • ઐ໳ʹಛԽ͗͢͠Δͱɺ͢Ͱʹ஌͍ͬͯΔ࿦จ͹͔Γ͕ఏҊ͞ΕΔͱ͍͏೉఺͕͋Δɻ • ࿦จͷ࣭΍ਓؾ౓͸ແࢹ͞ΕΔ͜ͱ͕ଟ͍ɻ ࿦จਪન ݚڀऀϓϩϑΝΠϧ ྨࣅ౓ࢉग़ ςΩετಛ௃

5'*%'ʹجͮ͘ख๏ <4VHJZBNB +$%-`> • ࿦จͷಛ௃நग़͸5'*%'ɺݚڀऀϓϩϑΝΠϦϯά͸5'Λ༻͍Δɻ • ޙऀ͸จॻͱ୯ޠ਺͕গͳ͍͜ͱͰ*%'ʹѱ͞Λ͢ΔͨΊɻ • ۀ੷͕ຊͷΈͷएखͱͦΕҎ֎ͷγχΞͰϓϩϑΝΠϦϯάํ๏Λมߋɻ एखɿࣗ෼ͷۀ੷ͱͦͷࢀߟจݙΛ༻͍Δɻ γχΞɿࣗ෼ͷۀ੷ͱͦͷࢀߟจݙʹՃ͑ͯࣗ෼ͷۀ੷ΛҾ༻͍ͯ͠ΔจݙΛ༻͍Δɻ • ࿦จͱݚڀऀϓϩϑΝΠϧؒͷίαΠϯྨࣅ౓Λࢉग़͠ɺ্Ґͷ࿦จΛਪનɻ , 4VHJZBNBBOE.: ,BO l4DIPMBSMZQBQFSSFDPNNFOEBUJPOWJBVTFSbTSFDFOUSFTFBSDIJOUFSFTUT z JO1SPD+$%- QQ r … Ҿ༻ Ҿ༻ ࠷ۙͷ࿦จ΄ͲॏΈΛେ͖͘ Ҿ༻ एख γχΞ

࿦จਪનͷݚڀ͕ٸܹʹ૿Ճ <"MJ 4DJFOUPNFUSJDT > • ಛʹ೥Ҏ߱͸จຒΊࠐΈ΍άϥϑຒΊࠐΈʢޙड़ʣؔ࿈ͷख๏͕੝ΜʹఏҊ͞Ε͍ͯΔɻ • ͜ͷ࿦จ͸ʮDJUBUJPOSFDPNNFOEBUJPOʯΛΫΤϦͱͯ͠࿦จΛऩू͕ͨ͠ɺʮQBQFS SFDPNNFOEBUJPOʯ΋ؚΊΔͱڪΒ͘΋ͬͱଟ͍ɻ ;"MJ *6MMBI ",IBO "6+BO BOE,.VIBNNBE l"OPWFSWJFXBOEFWBMVBUJPOPGDJUBUJPOSFDPNNFOEBUJPONPEFMT z 4DJFOUPNFUSJDT WPM QQr ࠨਤͷ͏ͪਂ૚ֶशܥͷ࿦จ lDJUBUJPOSFDPNNFOEBUJPOzͷ࿦จ਺

4DJ#&35 <#FMUBHZ&./-1`> • $4ɾੜ෺ҩֶ෼໺ʹ͓͚Δ໿ສຊͷ࿦จϑϧςΩετͰ#&35Λֶशɻ • ΦϦδφϧ#&35ͷޠኮ਺ͱ4DJ#&35ͷޠኮ਺ͷΦʔόʔϥοϓ͸ɻ • Պֶ෼໺ͱҰൠ෼໺ͷςΩετͷؒͰ୯ޠͷग़ݱස౓ʹେ͖ͳҧ͍͕͋Δ͜ͱΛࣔͨ͠ɽ 4DJ#&35 #&35 *#FMUBHZ FUBM l4DJ#&351SFUSBJOFE-BOHVBHF.PEFMGPS4DJFOUJGJD5FYU z1SPD&./-1 • ͳ͓#&35͸จॻ಺ͷจ຺ͷΈΛֶशʹ༻͍ΔͨΊɺҟͳΔจॻؒͷؔ࿈ੑΛଊ͑ ΔΑ͏ʹ͸܇࿅͞Ε͍ͯͳ͍ɻ

จΤϯίʔμͷൺֱ <.PIBNFE)BTTBO 3FD4ZT`> • ࿦จਪનʹ͓͍ͯ#&35 &-.P 64& *OGFS4FOU 4DJ#&35Λൺֱɻ • #.ͰϥϯΩϯάީิΛߜ͔ͬͯΒΤϯίʔμͰϦϥϯΩϯά͢Δ৔߹ɼυϝΠϯಛԽܕͷ 4DJ#&35Ͱ͸ͳ͘8JLJQFEJBؚΉҰൠจॻͰֶशͨ͠64&ͷํ͕ੑೳ͕ྑ͔ͬͨɻ .PIBNFE)BTTBO FUBM l#&35 &-.0 64&BOE*OGFS4FOUTFOUFODFFODPEFST5IFQBOBDFBGPSSFTFBSDIQBQFSSFDPNNFOEBUJPO z *O 1SPDPG"$.3FD4ZT -BUF#SFBLJOH3FTVMUTDPMPDBUFEXJUIUIFUI"$.$POGFSFODFPO3FDPNNFOEFS4ZTUFNT WPM QQr

41&$5&3<$PIBO "$-`> • 4DJ#&35Λ࿦จਪનͳͲ΁Ԡ༻͢ΔͨΊʹʮҾ༻ؔ܎ͷ༧ଌʯʹؔ͢Δ5SJQMFUϩεΛಋೖɻ • Ҿ༻ؔ܎͕༧ଌͰ͖ΔͳΒ͹࿦จؒͷؔ࿈ੑΛֶशͰ͖͍ͯΔͩΖ͏ͱ͍͏ߟ͑ɻ • ໿ສͷֶश༻USJQMFUTͱສͷݕূ༻USJQMFUTΛ༻͍ͯ5JUBO7(16Ͱֶशɻ • ໿೔ఔ౓Ͱֶश׬ྃɻ • طଘͷݴޠϞσϧʹൺ΂ͯෳ਺λεΫͰߴ͍ੑೳΛࣔͨ͠ɻ Ҿ༻ ຒΊࠐΈઌͰ ۙ͘ͳΔΑ͏ʹ ຒΊࠐΈઌͰ ԕ͘ͳΔΑ͏ʹ "$PIBOFUBM l41&$5&3%PDVNFOUMFWFM3FQSFTFOUBUJPO-FBSOJOHVTJOH$JUBUJPOJOGPSNFE5SBOTGPSNFST z1SPD"$-

࿦จਪનख๏ͷΧςΰϥΠζ ڠௐϑΟϧλϦϯάख๏ ίϯςϯπϕʔεख๏ άϥϑຒΊࠐΈख๏ ϋΠϒϦου Ϣʔβͷڵຯ ࿦จͷ಺༰ 4JNJMBS 4JNJMBS Ҿ༻ Ҿ༻

ֶज़৘ใ͔Βߏங͞ΕΔάϥϑ • ҟͳΔछྨͷϊʔυ΍Τοδ͕ࠞࡏ͢ΔωοτϫʔΫͷ͜ͱΛҟछ৘ใωοτϫʔΫ IFUFSPHFOFPVTJOGPSNBUJPOOFUXPSL)*/ ͱΑͿɻ • ֶज़৘ใͷ৔߹͸ஶऀɺ࿦จɺॴଐɺձٞɺ৔ॴͳͲͷϊʔυ͕ߟ͑ΒΕΔɻ ֶज़৘ใͷ)*/ ΤοδॏΈ͕શͯͰΤοδʹϥϕϧ͕ ෇͘ͳΒ͹φϨοδάϥϑʹ૬౰ ژ౎λϫʔ ҰൠతͳφϨοδάϥϑͷྫ ৔ॴ JTB ژ౎ࢢ JTMPDBUFEJO "MJDF WJTJUFE JTB ࢢ

3%'7FD<3JTUPTLJ *48$`> • ηϚϯςΟοΫ΢Σϒ෼໺ͰΑ͘༻͍ΒΕΔɻ • φϨοδάϥϑ্Ͱ௖఺ˠΤοδˠ௖఺ˠΤοδʜͷΑ͏ʹάϥϑ΢ΥʔΫ͠ɺύεΛ୯ޠͷܥྻ ΁ม׵ɻXPSEWFDΛద༻ͯ͠ϊʔυͷຒΊࠐΈΛಘΔɻ 1FUBS 3JTUPTLJ BOE)FJLP1BVMIFJN l3%'7FD3%'(SBQI&NCFEEJOHTGPS%BUB.JOJOH z*OUFSOBUJPOBM4FNBOUJD8FC $POGFSFODF ݚڀऀ" ࣥච ࿦จ ൃදઌ ࠃࡍձٞB …

7013FD <,POH *&&&5&5$ > • ςΩετಛ௃ͱωοτϫʔΫߏ଄ʹج͖ͮ࿦จϊʔυͷຒΊࠐΈΛֶशɻ • ֤࿦จͷςΩετͱҾ༻άϥϑΛͦΕͧΕXPSEWFD TUSVDWFDͰϕΫτϧԽɻ • ͦΕͧΕͷϕΫτϧۭؒͰۙ๣ͱͳΔ࿦จͱͷΤοδΛݩͷҾ༻άϥϑʹ௥Ճ͢Δɻ • άϥϑ΢ΥʔΫͱ4LJQHSBNͰϊʔυຒΊࠐΈΛಘΔɻ 9,POH ..BP 88BOH +-JVBOE#9V 7013FD7FDUPS3FQSFTFOUBUJPO-FBSOJOHPG1BQFSTXJUI5FYU*OGPSNBUJPOBOE 4USVDUVSBM*EFOUJUZGPS3FDPNNFOEBUJPO *&&&5SBOT&NFSHJOH5PQJDTJO$PNQVUJOH WPM OP QQ

0"(#&35<-JV ,%%`> • 0QFO"DBEFNJD(SBQIͷҟछ৘ใωοτϫʔΫΛςΩετԽͯ͠#&35Λֶशɻ • શจΛ༻͍ͨࣄલֶशͷ࣌఺ͰλΠτϧͱΞϒετϥΫτͷจͷؒʹஶऀ໊ͷτʔΫϯΛೖΕ͓ͯ͘ɻ • τʔΫϯʹ͸ϊʔυͷछྨͷΠϯσοΫεΛ෇༩ɻྫɿςΩετ͸ɺஶऀ͸ɻ • %PDWFD΍4DJ#&35ʹൺ΂ͯ࿦จਪનੑೳͷ޲্Λୡ੒ɻ 9-JV %:JO +;IFOH 9;IBOH 1;IBOH ):BOH :%POH BOE+5BOH l0"(#&355PXBSETB6OJGJFE#BDLCPOF -BOHVBHF.PEFMGPS"DBEFNJD,OPXMFEHF4FSWJDFT zJO1SPD,%%` QQr

࿦จਪનͷධՁํ๏ • େ͖͘෼͚ͯ࣍ͷͭͷΞϓϩʔν͕͋Δɻ ࣮ࡍʹਓʹධՁͯ͠΋Β͏ɻ ϢʔβධՁ ΢ΣϒϓϥοτϑΥʔϜʹͯϢʔβͷڍಈΛධՁɻ ΦϯϥΠϯධՁ HSPVOEUSVUIΛઃఆͯ͠ਖ਼ղ཰ͳͲΛࢉग़ɻ ΦϑϥΠϯධՁ

ϢʔβධՁ • ਪન݁ՌΛϢʔβʹఏࣔ͠ɺ߲໨͝ͱʹ఺਺Λ͚ͭͯ΋Β͏ɻ • ৽نੑɺ༗༻ੑɺख़࿅ऀ޲͚͔Ͳ͏͔ɺFUD ྫʣ<3BBNLVNBS *1. > "43BBNLVNBS 4'PP BOE/1BOH l6TJOHBVUIPSTQFDJGJFELFZXPSETJOCVJMEJOHBOJOJUJBMSFBEJOHMJTUPGSFTFBSDIQBQFSTJOTDJFOUJGJDQBQFS SFUSJFWBMBOESFDPNNFOEFSTZTUFNT z*OGPSNBUJPO1SPDFTTJOHBOE.BOBHFNFOU WPM OP QQr • ਓతίετ͕େ͖͍ɻಛʹ༷ʑͳ෼໺ͷධՁऀΛूΊΔͷ͸ࠔ೉ɻ • ධՁऀͷόοΫάϥ΢ϯυ΍εΩϧ͕Өڹ͢Δ໘΋ɻ ü ֶੜ໊ͱڭ৬һ໊ʹϝʔϧͰ࣮ݧڠྗΛґཔɻࢀՃ৚݅͸ʮҰຊҎ্ͷ࿦จΛࣥචͨ͜͠ͱʯɻ ü ܭ໰ʹର͠ஈ֊ͷϦοΧʔτई౓Ͱճ౴ɻ ü ֶੜͷํ͕ڭ৬һΑΓ΋ਪનʹؔ͢Δຬ଍౓͕༏Ґʹߴ͍͜ͱΛࣔͨ͠ɻ

ΦϯϥΠϯධՁ • ௚઀ϨʔςΟϯάΛूΊΔ͜ͱͳ͘ਪનγεςϜར༻ऀͷڍಈΛఆྔԽ͢Δɻ • &ίϚʔεͰͷਪનΞϧΰϦζϜධՁͰΑ͘༻͍ΒΕΔํ๏ɻ • ΫϦοΫεϧʔ཰ʜਪન͞Εͨ΋ͷͷ͏ͪɺ࣮ࡍʹΫϦοΫ͞Εׂͨ߹ɻϢʔβͷຬ଍౓ͱ૬͕ؔ͋Δɻ • μ΢ϯϩʔυ཰ɺߪೖ཰ ͳͲ • ϓϥοτϑΥʔϜͷҧ͍͕༩͑ΔӨڹΛݕূ͢Δඞཁ͕͋Δɻ • ࣮γεςϜ͕ඞཁͳͨΊֶज़৘ใਪનͷ෼໺Ͱ͸ಛఆάϧʔϓ͔͠ߦ͍ͬͯͳ͍ɻ ྫʣ<$PMMJOT+$%-`> จݙਪનɾ؅ཧͷΦʔϓϯιʔεϓϩδΣΫτʹͯສຊͷจݙ͔ΒϢʔβʹਪનɻ೥൒࣮ࢪɻ TF-IDF (95%) Doc2vec (2%) キーフレーズ(3%) ਪનͷΞϧΰϦζϜ಺༁ ϓϥοτϑΥʔϜʹΑͬͯ ΞϧΰϦζϜͷੑೳॱҐ͕มಈͨ͠ʢʂʣ

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