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データサイエンスLT祭 のLTネタ

tetsuroito
September 07, 2016
1.6k

データサイエンスLT祭 のLTネタ

Low Bias High VarianceとFilter Bubbleな私

tetsuroito

September 07, 2016
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  1. Low Bias High Variance
    ͱFilter Bubbleͳࢲ
    Datascience LTࡇ @tetsuroito
    2016/09/07ɹɹYahoo Japan @Tokyo Middtown

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  2. ࣗݾ঺հ
    ໊લɿҏ౻ ప࿠ (@tetsuroito)
    ࢓ࣄɿاըͱ͔෼ੳͱ͔ࡶ༻पΓ
    ϚΠϒʔϜɿᰤࢠ
    ҙؾࠐΈɿ͓ۚΛલ΁ʂ
    ͔͔ͤͬͩ͘Β͍͔ͭ͘એ఻͍ͨ͠

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  3. ZDNetͰϙΤϜॻ͍ͯ·͢

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  4. ZDNetͰϙΤϜॻ͍ͯ·͢
    ΈΜͳͷγΣΞ΍͸ͯϒ͕
    ࢲͷϞνϕʔγϣϯͰ͢ʂ

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  5. Tγϟπ࡞ͬͨ

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  6. Tγϟπ࡞ͬͨ
    པΉങ͍ͬͯͩ͘͞w
    https://steers.jp/c/whyareuusingsjis

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  7. ຊ೔ͷΞδΣϯμ
    Low Bias High Varianceͳ࿩
    Filter Bubbleͳ࿩
    ͦͯ͠ࢲ

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  8. Low Bias High Varianceͳ࿩
    σʔλղੳͷ໨త
    →ݱ৅ͷഎܠʹ͋Δ͘͠Έͷಛఆ
    ɹۙࣅతʹ୅ସՄೳͳ౷ܭϞσϧͷߏங
    σʔλղੳͷ࣮ࡍ
    →ͨ·ͨ·ಘΒΕͨσʔλ΁ͷ౰ͯ͸·Γ
    ɹ౷ܭϞσϧͷෳࡶԽ

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  9. Ͳ͏ͯ͜͠͏ͳͬͯ͠·͏ͷ͔
    ؍ଌσʔλ͕KPI΁ͷηϯγςΟϏςΟ͕ߴ͍
    KPIΛ๬Ήํ޲΁ͲΜͲΜաֶश͍ͯ͘͠
    ࣮຿ͷݱ৔Ͱ͸
    ͜ͷΑ͏ͳ౷ܭϞσϦϯά͕৆ࢍ͞ΕΔ܏޲

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  10. ྫ͑͹ɺ͜Μͳࢪࡦͷ۩߹
    tظͷࢪࡦ
    ධՁ× ධՁ˓ ධՁ˚
    t+1ظͷࢪࡦ ଧͪ੾Γ
    ܧଓ ܧଓ New
    ଧͪ੾Γ
    ੜଘόΠΞε͕࣌ܥྻ૬্͕͍ؔͯͬͯ͘͠
    t+2ظͷࢪࡦ

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  11. ͏·͍ͬͨ͘ࢪࡦ΋…
    ޮ༻ۂઢͷݟ஍͔ΒɺঃʑʹޮՌ͕ബΕΔ
    ޮ༻ਫ४
    ࣮ࢪճ਺
    ޮ༻ۂઢ
    ཧ࿦্ɺࠨهͷΑ͏͕ͩɺ
    ΋͔͢͠Δͱ܏͖͸ϚΠφε͔΋

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  12. ฏۉճؼͷ᠘
    ౰ॳ͸௿͍όΠΞε
    ߴ͍όϦΞϯεͰ
    ࢪࡦΛ࣮ࢪ΋
    ϓϩηεΛܦΔʹͭΕͯɺ
    ͲΜͲΜฏۉʹऩଋ

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  13. γϛϡϨʔγϣϯ͕େࣄͰ͢Ͷ
    ϒʔτετϥοϓ๏΍
    ϞϯςΧϧϩγϛϡϨʔγϣϯ
    ͳͲͷΠςϨʔγϣϯճ਺Λ
    ճͯ͠ऩଋ͢ΔϞσϦϯά
    ͕ΩʔͱͳΔ͔΋

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  14. Filter Bubbleͳ࿩
    ݟ͍ͨ΋ͷ͔͠Έͳ͘ͳΔΑ͏ʹͳΔ

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  15. όϦΞϯε
    όΠΞε
    ϑΟϧλʔόϒϧ

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  16. ৘ใߑਫͷӔ
    ৘ใͷऔࣺબ୒͸ඞࢸ

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  17. ωοτόΧʹֶͿ
    χίϥεɾΧʔᐌ͘
    Google΁ͷݕࡧߦಈ͕೴ͷใुܥʹϑΟʔυόο
    ΫΛ༩͍͑ͯΔɻ
    ݕࡧˠ౴͑ͷڧԽֶश
    ஫ҙྗ͕ࢄອʹͳΓɺਂ͍ࢥߟ͕Ͱ͖ͳ͘ͳΔ

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  18. εΫϥοϓ&Ϗϧυ͕ඞཁͩʂ
    ͜Ε·ͰͷܦݧΛյͯ͠ ৽͍͠ϞσϧΛߏங

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  19. ૑଄తഁյͬͯ
    ͦ͏͍͏͜ͱʁ
    γϡϯϖʔλʔ͞Μ

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  20. でも、現実には難しい


    だって人間だもの


    てつろー

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  21. ͦΜͳ͜ͱΛߟ͑ͳ͕Β
    ೔ʑͷ෼ੳ΍اըͳͲΛ
    ߟ͍͑ͯ·͢
    ົҊ͋Ε͹ڭ͑ͯԼ͍͞ʂ

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  22. ご静聴


    ありがとうございました

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