AAAI・WSDM 2017論文読み会

Transcript

1. """*ɾ84%.
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   %JWFSTJpDBUJPO Recruit Communications Co., Ltd. Kenji Hayashida

2. 4&-'
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   ϓϩίϯ

3. 84%.
    ̶Recruit Communications Co., Ltd.̶

4. 84%.
    ̶Recruit Communications Co., Ltd.̶ ৄࡉ͸3$0
   ΞυςΫ-BC
   ϒϩάͰʂ ʮXTEN
   
   SDP
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5. */530%6$5*0/ Ϣʔβ͕ٻΊ͍ͯΔ৘ใΛఏڙ͢Δͷ͸೉͍͠ ̶Recruit Communications Co., Ltd.̶ )BSSZ
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6. */530%6$5*0/ ̶Recruit Communications Co., Ltd.̶ 43%
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   43%ɹΫΤϦʹજࡏ͢ΔαϒτϐοΫ͕Θ͔͍ͬͯΔ৔߹
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   43%ɹΫΤϦʹજࡏ͢ΔαϒτϐοΫ͕Θ͔͍ͬͯͳ͍৔߹

   ଟ͘ͷ৔߹ɺજࡏαϒτϐοΫ͸Θ͔Βͳ͍ ࠓճ঺հ͢Δ࿦จ͸ɺJNQMJDJU
   43%ʹϑΥʔΧε

7. */530%6$5*0/ ̶Recruit Communications Co., Ltd.̶ .BYJNBM
   .BSHJOBM
   3FMFWBODF
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   ଞʹ΋༷ʑͳख๏͕ଘࡏ͠ɺओʹҎԼͷ఺͕ҟͳΔɻ 

   
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   ݁ՌϦετΛͲͷΑ͏ʹੜ੒͢Δ͔ʁ MMR = arg max Di 2R\S  Sim1(Di, Q) (1 ) max Dj 2S Sim2(Di, Dj) ҎԼͷج४ͰυΩϡϝϯτΛHSFFEZʹબ୒͢Δ ʢ$BSCPOFMM
   BOE
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   ʣ

8. 3&-"5&%
   803, ̶Recruit Communications Co., Ltd.̶ "⒏OJUZ
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    ը૾෼ྨɺը૾ηάϝϯςʔγϣϯͳͲͰར༻͞ΕΔ

   U = Uij = ΞΠςϜJͱΞΠςϜKͷྨࣅ౓ ΞΠςϜJ͕ඪຊʹબ͹ΕΔ֬཰ (i = j) (i 6= j) \ ඇඪຊσʔλͱͦΕ͕ଐ͢ΔΫϥελͷඪຊσʔλͷྨࣅ౓ͷ࿨Λ࠷େԽ

9. 3&-"5&%
   803, ̶Recruit Communications Co., Ltd.̶ %FTJSBCMF
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10. 130104&%
    .&5)0% ̶Recruit Communications Co., Ltd.̶ *-1*%ʢJOUFHFS
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    GPS
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    43%ʣ

11. 130104&%
    .&5)0% ̶Recruit Communications Co., Ltd.̶ *-1*% YJJ
    
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    υΩϡϝϯτEJ͕EKΛඪຊʹબΜ͔ͩʁ

12. 130104&%
    .&5)0% ̶Recruit Communications Co., Ltd.̶ *-1*% ద߹ੑΛ࠷େԽ

13. 130104&%
    .&5)0% ̶Recruit Communications Co., Ltd.̶ *-1*% ୅දੑΛ࠷େԽ

14. 130104&%
    .&5)0% ̶Recruit Communications Co., Ltd.̶ *-1*% NυΩϡϝϯταΠζͱLඪຊαΠζͷେ͖͞Λௐ੔ʢN
    
    Lʣ

15. 130104&%
    .&5)0% ̶Recruit Communications Co., Ltd.̶ *-1*% ඪຊʹબ͹ΕΔυΩϡϝϯτ͸Lݸ

16. 130104&%
    .&5)0% ̶Recruit Communications Co., Ltd.̶ *-1*% υΩϡϝϯτEJͷඪຊ͸͚ͭͩ

17. 130104&%
    .&5)0% ̶Recruit Communications Co., Ltd.̶ *-1*% EJ͕EKΛඪຊʹબΜͩͳΒɺEK͸ඪຊυΩϡϝϯτͰ͋Δ

18. 130104&%
    .&5)0% ̶Recruit Communications Co., Ltd.̶  %'1͸*-1*%ͷಛघέʔεͱߟ͑Δ͜ͱ͕Ͱ͖Δ
     *-1*%Ͱදݱ͢Δ͜ͱͰ࠷ద஋ΛܭࢉՄೳ
    

    ͦͷଞͷ*NQMJDJU43%ͷख๏ʢ..3
    .51ͳͲʣ΋ಉ༷ʹ*-1*%ͰදݱՄೳ *-1*% %'1

19. &91&3*.&/54 ̶Recruit Communications Co., Ltd.̶ 53&$
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    5SBDL #. 43%
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    SFUSJFWBM
    
    DIPPTF
    999
    EPDVNFOUT DIPPTF
    
    EPDVNFOUT

20. &91&3*.&/54 ̶Recruit Communications Co., Ltd.̶  ͢΂ͯͷΫΤϦʹରͯ͠ɺ%*-1*%
    㱢
    %%'1
     %'1Ͱ͸࠷ద஋͕͑ΒΕͯͳ͍͜ͱΛ࣮ূ
    

    υΩϡϝϯταΠζ͕૿͑Δ΄Ͳࠩ͸ݦஶ ࠷దੑͷݕূ   ͓ࣜΑͼ  ࣜͷЕ
    
    ɺ  ͔ࣜΒLͷ܎਺Λআ͘ʢଟ༷ੑʹϑΥʔΧεʣ
     ಉ͡ܗͷ࠷దԽ໰୊ʹͯ͠ɺ*-1*%ͱ%'1ͷ࠷ద஋Λൺֱ ˞
    3&'&3&/$&4<>ΑΓҾ༻

21. &91&3*.&/54 ̶Recruit Communications Co., Ltd.̶ ֤Ϟσϧͷੑೳൺֱ  *-1*%͸ଞͷϕʔεϥΠϯख๏ͱൺ΂ͯੑೳ͕Α͍
     ଟ͘ͷվળ͸౷ܭతʹ༗ҙ

    ˞
    3&'&3&/$&4<>ΑΓҾ༻

22. &91&3*.&/54 ̶Recruit Communications Co., Ltd.̶ ֤Ϟσϧͷੑೳൺֱ  *-1*%͸ଞͷϕʔεϥΠϯख๏ͱൺ΂ͯੑೳ͕Α͍
     ଟ͘ͷվળ͸౷ܭతʹ༗ҙ

    ˞
    3&'&3&/$&4<>ΑΓҾ༻

23. &91&3*.&/54 ̶Recruit Communications Co., Ltd.̶ ܭࢉ଎౓  Ұൠʹ੔਺ઢܗܭը໰୊͸/1ࠔ೉Ͱ͋ Δ
    

    ༷ʑͳ෼ࢬݶఆ๏ͷΞϧΰϦζϜ͕ఏҊ ͞Ε͍ͯΔ
     ࠷৽ͷιϧόʔΛ࢖͑͹े෼ߴ଎ʹܭࢉ Մೳ ੔਺ઢܗܭըʹ͍ͭͯ  ಉ༷ͷఆࣜԽͰ͋Δ͕ɺܭࢉίετ͸ *-1*%ͷํ͕%'1ΑΓߴ͍
     *-1*%Ͱ͸෼ࢬݶఆ๏Ͱ࠷ద஋ΛٻΊ ͍ͯΔ͜ͱΛߟྀ͢Ε͹ೲಘͰ͖Δ ܭࢉ଎౓ͷൺֱ ˞
    3&'&3&/$&4<>ΑΓҾ༻

24. $0/$-64*0/4
    "/%
    '6563&
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     Ϋϥελ಺ͷυΩϡϝϯτͷ૬ؔɺΫϥελಉ࢜ͷ૬ؔͳͲΛߟྀ ͨ͠ϞσϦϯάͷվྑ

25. "11&/%*9
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26. "11&/%*9
    #. ̶Recruit Communications Co., Ltd.̶ score ( D, Q )

    = n X i=1 IDF( qi) f ( qi, D )( k1 + 1) f ( qi, D ) + k1(1 b + b |D| avgdl ) f(qi, D) avgdl IDF ( qi) = log N n ( qi) + 0 . 5 n ( qi) + 0 . 5 ୯ޠRJͷυΩϡϝϯτ%಺ͷUFSN
    GSFRVFODZ υΩϡϝϯτͷฏۉ୯ޠ਺ N n(qi) υΩϡϝϯτ਺ ୯ޠRJΛؚΉυΩϡϝϯτ਺

27. "11&/%*9
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    1PSUGPMJP
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     ҎԼͷ஋͕ߴ͍΋ͷΛHSFFEZʹબ୒͍ͯ͘͠ E(dk) w ⇢ik k υΩϡϝϯτͷظ଴ద߹ੑ υΩϡϝϯτͷద߹ੑͷඪ४ภࠩ ϥϯΫݻ༗ͷॏΈ υΩϡϝϯτEJͱELͷ૬ؔ܎਺

28. "11&/%*9
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29. "11&/%*9
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30. "11&/%*9
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    ཧ૝తʹϥϯΩϯά͞Εͨͱ͖ͷϥϯΫSͷυΩϡϝϯτͷήΠϯ ద߹Ϩϕϧ ήΠϯ       ЋO%$( ήΠϯͷ୅ΘΓʹOPWFMUZCJBTFEήΠϯΛ༻͍Δ 
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31. 3&'&3&/$&4 ̶Recruit Communications Co., Ltd.̶ <>
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