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0323LT用資料教師なし学習について
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nigorinuma hiroki
March 22, 2016
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0323LT用資料教師なし学習について
3/23のLT用資料です
nigorinuma hiroki
March 22, 2016
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Transcript
)JUPLVTF*OD ڭࢣͳֶ͠शʹ͍ͭͯ dϒϥϯσΟϯάޮՌΛݟ͚ͭΔͨΊʹd
)JUPLVTF*OD ΞδΣϯμ ڭࢣͳֶ͠शʹࢸͬͨܦҢ ࡞ۀʹඞཁͳֶͱ౷ܭ ओੳΛߦ͏ ·ͱΊ
)JUPLVTF*OD ڭࢣͳֶ͠शʹࢸͬͨܦҢ 8FCࠂͷӡ༻ʹ͓͚Δͭͷ֓೦ ɾ֫ಘ ɾϒϥϯσΟϯά ֫ಘ ϒϥϯσΟϯά త
30"4ͷޮԽ ೝͷ্ खஈ Ծʹ%41Λ͏ ੩ࢭըɾωΠςΟϒ Ϧλή ಈըɾϦονɾ੩ࢭը λʔήοτ ݦࡏ જࡏ ,1* $1" ඞཁ͔ෆඞཁ͔ ඞཁ ඞཁ ඞཁʹؔΘΒͣ,1*͕ෆ໌ྎͳͨΊΘΕʹ͍͘
)JUPLVTF*OD ڭࢣͳֶ͠शʹࢸͬͨܦҢ ,1*͕ෆ໌ྎͰ͋Δ͜ͱ͔Βى͖Δ͜ͱ ɾͦͦΘΕͳ͍ ɾͬͯྑ͔͔ͬͨѱ͔͔ͬͨஅग़དྷͳ͍ ɾԾʹྑ͔ͬͨͱஅͯ͠࠶ݱੑ͕ͳ͍ Ϧϐʔτग़དྷͳ͍ ֫ಘ
֫ಘ ϒϥϯσΟϯά ࠂӡ༻ͷ,1* $1" $10 Ϧϐʔτ -57 ࠷ऴඪ 30"4 ೝ ϒϥοΫϘοΫε ग़ల : 100%࣮֬ʹചΓ্͕͛Ξοϓ͢Δ࠷ڧͷΈ (h(p://www.amazon.co.jp/dp/B00USO427K/ref=dp-‐kindle-‐redirect?_encoding=UTF8&btkr=1) ද,1*ͷߟ͑ํ ֫ಘͱಉ༷ʹશ͕ͯͭͳ͕Δͱߟ͍͚͑ͯͳ͍
)JUPLVTF*OD ڭࢣͳֶ͠शʹࢸͬͨܦҢ ϒϥϯσΟϯάʹ͓͚Δ,1*ͷߟ͑ํ ೝ KPI_1 KPI_2 KPI_3 KPI_N
… Ұํɺओੳͷ֓೦ਤ తม આ໌ม_1 … આ໌ม_2 આ໌ม_3 આ໌ม_N ओੳ 1$" ͰϒϥϯσΟϯάͷ,1*Λߟ͑Δ ※ओੳڭࢣͳֶ͠शͷҰͭ
)JUPLVTF*OD ࡞ۀʹඞཁͳֶͱ౷ܭ ࠓճओੳΛߦ͏ʹ͋ͨΓඞཁͳ͜ͱ ɾઢܗ ݻ༗ܭࢉɺߦྻࣜͷܭࢉ 3Ͱߦ͏ ɾ౷ܭֶ ඪ४ภࠩɺ૬ؔ
&9$&-Ͱߦ͏
)JUPLVTF*OD ओੳΛߦ͏ ۚ༥ܥҊ݅༏ྑϝσΟΞࢦ తม Λࢉग़ ɾઆ໌มΛఆٛ $53ɺ$73ɺ$1"
ɾม͝ͱʹج४ΛٻΊΔ ɾ૬ؔߦྻΛٻΊΔ ɾ૬ؔߦྻͷݻ༗ܭࢉΛ͠ɺݻ༗ϕΫτϧΛఆٛ ɾݻ༗ϕΫτϧ͔ΒࢄਤΛඳ͘ʜᶃ ɾ֤ϝσΟΞͷୈҰओ࠲ඪͱୈೋओ࠲ඪΛٻΊΔ ɾ࠲ඪΛͱʹࢄਤΛඳ͘ʜᶄ ɾᶃͱᶄͷࢄਤΛͱʹධՁΛߦ͏ ओੳԽग़དྷͳ͍తมΛɺ આ໌Մೳͳมͱͦͷد༩Ͱఆٛ͢Δੳ
)JUPLVTF*OD ओੳΛߦ͏ આ໌มΛఆٛ ɾ༏ྑϝσΟΞͰ͋Δ͔Ͳ͏͔ͷࢦԽ͞Εͳ͍ ༏ྑϝσΟΞͰ͋Δ͔Ͳ͏͔Λઆ໌͢ΔͨΊͷࢦඪΛఆٛ $53ɺ$73ɺ$1" ͍ఔྑ͍͜ͱ͔ΒٯΛऔΔ Λબ
$53 $73 $1"ͷٯ ϝσΟΞ ϝσΟΞ ϝσΟΞ ϝσΟΞ ʜ ʜ ʜ ʜ ϝσΟΞ/ ฏۉ ඪ४ภࠩ ※࣮ࡍͷϝσΟΞͷͱҟͳΔɺܭࢉ༻ʹఆٛͨ͠Ͱ͢ɻ දੜσʔλ
)JUPLVTF*OD ओੳΛߦ͏ มຖʹج४ΛٻΊΔ ɾج४ͷఆٛ ͦͷมͷฏۉ ͦͷมͷඪ४ภࠩ $53ͷج४ $73ͷج४
$1"ͷٯͷʜ ϝσΟΞ ϝσΟΞ ϝσΟΞ ϝσΟΞ ʜ ʜ ʜ ʜ ϝσΟΞ/ ฏۉ ඪ४ภࠩ ※࣮ࡍͷϝσΟΞͷͱҟͳΔɺܭࢉ༻ʹఆٛͨ͠Ͱ͢ɻ දੜσʔλΛج४Խͨ͠σʔλ
)JUPLVTF*OD ओੳΛߦ͏ ૬ؔߦྻΛٻΊΔ ɾԼͷදͷ͕૬ؔߦྻͱͳΔ &9$&-ͷ$033&- Λར༻ ૬ؔߦྻରশߦྻͱͳΔ $53
$73 $1"ͷٯ $53 $73 $1"ͷٯ ※࣮ࡍͷϝσΟΞͷͱҟͳΔɺܭࢉ༻ʹఆٛͨ͠Ͱ͢ɻ ද֤มͷ૬ؔߦྻ
)JUPLVTF*OD ओੳΛߦ͏ ૬ؔߦྻͷݻ༗ͱݻ༗ϕΫτϧΛٻΊΔ ɾ3ͰܭࢉD ͷ ͦΕΛԣ࣠ʹͱͬͨ࣌ͷϕΫτϧ YSCJOE D
$53 D $73 D $1"ͷٯ MBNCEBFJHFO Y ݻ༗ ݻ༗ϕΫτϧ ※࣮ࡍͷϝσΟΞͷͱҟͳΔɺܭࢉ༻ʹఆٛͨ͠Ͱ͢ɻ දݻ༗ͱͦΕʹରԠ͢ΔϕΫτϧͷ
)JUPLVTF*OD ओੳΛߦ͏ ݻ༗ϕΫτϧΛݩʹ࠲ඪΛग़͠ɺͦͷࢄਤΛඳ͘ ɾ࠷େͱ࠷େ͔Β൪ͷݻ༗Λݩʹ࠲ඪΛग़͢ [ [ $53
$73 $1"ͷٯ ※࣮ࡍͷϝσΟΞͷͱҟͳΔɺܭࢉ༻ʹఆٛͨ͠Ͱ͢ɻ දݻ༗ͱͦΕʹରԠ͢ΔϕΫτϧͷ CTR$ CVR$ CPA (0.4$ (0.2$ 0$ 0.2$ 0.4$ 0.6$ 0.8$ 1$ (0.4$ (0.2$ 0$ 0.2$ 0.4$ 0.6$ 0.8$ 1$ ϓϩοτͷ݁Ռͷਤ ɾԣ࣠Λ[ ɾॎ࣠Λ[ ͱ͢Δɻ
)JUPLVTF*OD ओੳΛߦ͏ ֤ϝσΟΞͷ[ɺ[ͷΛٻΊΔ ɾ[V V V ɾ[VV V
V V VͦΕͧΕ$53 $73 $1" ͷٯ ͷج४ [ [ ϝσΟΞ ϝσΟΞ ϝσΟΞ ϝσΟΞ ʜ ʜ ʜ ϝσΟΞ/ ※࣮ࡍͷϝσΟΞͷͱҟͳΔɺܭࢉ༻ʹఆٛͨ͠Ͱ͢ɻ දੜσʔλ
)JUPLVTF*OD ओੳΛߦ͏ ֤ϝσΟΞͷ[ [Λϓϩοτͨ͠ࢄਤΛඳ͘ ※࣮ࡍͷϝσΟΞͷͱҟͳΔɺܭࢉ༻ʹఆٛͨ͠Ͱ͢ɻ 1" 2" 3"
4" 5" 6" 7" 8" 9" 10" 11" 12" 13" 14" ,1.5" ,1" ,0.5" 0" 0.5" 1" 1.5" 2" 2.5" 3" 3.5" ,2" ,1.5" ,1" ,0.5" 0" 0.5" 1" 1.5" 2" 2.5" 3" 1" ԣ࣠Λ[ɺॎ࣠Λ[ͱ͢Δ [Λ༏ྑϝσΟΞͱͨ͠߹ ϝσΟΞ͕࠷༏ྑϝσΟΞͱͳΔ ϝσΟΞ10
)JUPLVTF*OD ओੳΛߦ͏ ࠶มͷࢄਤʹ CTR$ CVR$ CPA (0.4$ (0.2$
0$ 0.2$ 0.4$ 0.6$ 0.8$ 1$ (0.4$ (0.2$ 0$ 0.2$ 0.4$ 0.6$ 0.8$ 1$ [ͷ࣠Λݟͨ࣌ɺ ༏ྑϝσΟΞʹ࠷د༩͍ͯ͠Δͷ$73 CVR
)JUPLVTF*OD ओੳΛߦ͏ [ͷ࣠վΊͯ֬ೝ͢Δ ɾ[࣠$53ʹد༩͍ͯ͠ΔͨΊɺϝσΟΞͷࢄਤͱൺֱ͠ ͨ࣌ɺϝσΟΞ$53͕ߴ͍ CTR$ CVR$ CPA
(0.4$ (0.2$ 0$ 0.2$ 0.4$ 0.6$ 0.8$ 1$ (0.4$ (0.2$ 0$ 0.2$ 0.4$ 0.6$ 0.8$ 1$ [ͷੳ࣠[ಉ༷ॏཁͳࢦඪͱͳΔ 1" 2" 3" 4" 5" 6" 7" 8" 9" 10" 11" 12" 13" 14" ,1.5" ,1" ,0.5" 0" 0.5" 1" 1.5" 2" 2.5" 3" 3.5" ,2" ,1.5" ,1" ,0.5" 0" 0.5" 1" 1.5" 2" 2.5" 3" 1" ϝσΟΞ4
)JUPLVTF*OD ओੳΛߦ͏ ิد༩ʹ͍ͭͯ ɾݻ༗ͷ࠷େͱ൪ͷ͔Βओͷد༩ΛݟΔ [ͷد༩ ࠷େͷݻ༗తมͷ
[ͷد༩ ൪ͷͷݻ༗తมͷ [ͷد༩ [ͷد༩ ද֤ओͷد༩ [·Ͱͷτʔλϧد༩͕Λ͍͑ͯΕɺ ֓Ͷ༏ྑͱͯ͠ͳ͍ͱஅͰ͖Δ
)JUPLVTF*OD ·ͱΊ ओੳʹ͍ͭͯ·ͱΊ ɾԽͰ͖ͳ͍ཁૉΛผͷతมΛͬͯදݱ͢Δ ɾతมదʹఆٛɺͨͩ͠ԿނͦͷมΛఆ͔ٛͨ͠ ޠΕΔΑ͏ʹ ɾೝΛఆٛ͢Δ߹ɺΞϯέʔτͰతมΛऔಘ͠ɺ ͔ͭɺ%41ͰऔಘͰ͖Δ
JNQ࠶ੜ ΛతมͰఆٛ ೝ imp ࠶ੜ ϒϥϯυͷ ҹ ϒϥϯυͷ Πϝʔδ … ਤೝͷఆٛྫ %41Ͱऔಘ ΞϯέʔτͰऔಘ
)JUPLVTF*OD ·ͱΊ ࢀߟจݙʹ͍ͭͯ ɾϚϯΨͰ͔Δ౷ܭֶ<Ҽࢠੳฤ> IUUQXXXBNB[PODPKQ&&&#&"$&"&'&#&# &##&"&"%"&#"&"%&&&&#"&"#&"#&#'"EQ ϚϯΨͳͷͰΘ͔Γ͍͢ʹؔΘΒͣɺଞʹԠ༻͕ޮ
͘Α͏ʹॻ͔Ε͍ͯΔɻ ิͰผͷڭՊॻΛ͏ͱΑ͍͔ɻ