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データサイエンスLT祭 のLTネタ
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tetsuroito
September 07, 2016
1.9k
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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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Transcript
Low Bias High Variance ͱFilter Bubbleͳࢲ Datascience LTࡇ @tetsuroito 2016/09/07ɹɹYahoo
Japan @Tokyo Middtown
ࣗݾհ ໊લɿҏ౻ ప (@tetsuroito) ࣄɿاըͱ͔ੳͱ͔ࡶ༻पΓ ϚΠϒʔϜɿᰤࢠ ҙؾࠐΈɿ͓ۚΛલʂ ͔͔ͤͬͩ͘Β͍͔ͭ͘એ͍ͨ͠
ZDNetͰϙΤϜॻ͍ͯ·͢
ZDNetͰϙΤϜॻ͍ͯ·͢ ΈΜͳͷγΣΞͯϒ͕ ࢲͷϞνϕʔγϣϯͰ͢ʂ
Tγϟπ࡞ͬͨ
Tγϟπ࡞ͬͨ པΉങ͍ͬͯͩ͘͞w https://steers.jp/c/whyareuusingsjis
ؓٳ
ຊͷΞδΣϯμ Low Bias High Varianceͳ Filter Bubbleͳ ͦͯ͠ࢲ
Low Bias High Varianceͳ σʔλղੳͷత →ݱͷഎܠʹ͋Δ͘͠Έͷಛఆ ɹۙࣅతʹସՄೳͳ౷ܭϞσϧͷߏங σʔλղੳͷ࣮ࡍ →ͨ·ͨ·ಘΒΕͨσʔλͷͯ·Γ ɹ౷ܭϞσϧͷෳࡶԽ
Ͳ͏ͯ͜͠͏ͳͬͯ͠·͏ͷ͔ ؍ଌσʔλ͕KPIͷηϯγςΟϏςΟ͕ߴ͍ KPIΛΉํͲΜͲΜաֶश͍ͯ͘͠ ࣮ͷݱͰ ͜ͷΑ͏ͳ౷ܭϞσϦϯά͕ࢍ͞ΕΔ
ྫ͑ɺ͜Μͳࢪࡦͷ۩߹ tظͷࢪࡦ ධՁ× ධՁ˓ ධՁ˚ t+1ظͷࢪࡦ ଧͪΓ ܧଓ ܧଓ New
ଧͪΓ ੜଘόΠΞε͕࣌ܥྻ૬্͕͍ؔͯͬͯ͘͠ t+2ظͷࢪࡦ
͏·͍ͬͨ͘ࢪࡦ… ޮ༻ۂઢͷݟ͔ΒɺঃʑʹޮՌ͕ബΕΔ ޮ༻ਫ४ ࣮ࢪճ ޮ༻ۂઢ ཧ্ɺࠨهͷΑ͏͕ͩɺ ͔͢͠Δͱ͖ϚΠφε͔
ฏۉճؼͷ᠘ ॳ͍όΠΞε ߴ͍όϦΞϯεͰ ࢪࡦΛ࣮ࢪ ϓϩηεΛܦΔʹͭΕͯɺ ͲΜͲΜฏۉʹऩଋ
γϛϡϨʔγϣϯ͕େࣄͰ͢Ͷ ϒʔτετϥοϓ๏ ϞϯςΧϧϩγϛϡϨʔγϣϯ ͳͲͷΠςϨʔγϣϯճΛ ճͯ͠ऩଋ͢ΔϞσϦϯά ͕ΩʔͱͳΔ͔
Filter Bubbleͳ ݟ͍ͨͷ͔͠Έͳ͘ͳΔΑ͏ʹͳΔ
όϦΞϯε όΠΞε ϑΟϧλʔόϒϧ
ใߑਫͷӔ ใͷऔࣺબඞࢸ
ωοτόΧʹֶͿ χίϥεɾΧʔᐌ͘ Googleͷݕࡧߦಈ͕ͷใुܥʹϑΟʔυόο ΫΛ༩͍͑ͯΔɻ ݕࡧˠ͑ͷڧԽֶश ҙྗ͕ࢄອʹͳΓɺਂ͍ࢥߟ͕Ͱ͖ͳ͘ͳΔ
εΫϥοϓ&Ϗϧυ͕ඞཁͩʂ ͜Ε·ͰͷܦݧΛյͯ͠ ৽͍͠ϞσϧΛߏங
తഁյͬͯ ͦ͏͍͏͜ͱʁ γϡϯϖʔλʔ͞Μ
でも、現実には難しい だって人間だもの てつろー
ͦΜͳ͜ͱΛߟ͑ͳ͕Β ʑͷੳاըͳͲΛ ߟ͍͑ͯ·͢ ົҊ͋Εڭ͑ͯԼ͍͞ʂ
ご静聴 ありがとうございました