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広告業界の機械学習~バンディットアルゴリズムを題材に~

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第28回 Machine Learning 15minutes! 発表資料
https://machine-learning15minutes.connpass.com/event/97195/

Published in: Data & Analytics
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広告業界の機械学習~バンディットアルゴリズムを題材に~

  1. 1. Copyright © 2014 OPT, Inc. All Rights Reserved. ~ ~
  2. 2. Scala 2
  3. 3. • 10/2( )19:30~ • 3
  4. 4. Web AI Google AlphaZero 4
  5. 5. Copyright © 2014 OPT, Inc. All Rights Reserved. Web Web AI Google AlphaZero
  6. 6. ROI 6
  7. 7. A/B N 7
  8. 8. - CPA( = Cost / CV ) CTR ( = CLICK / ) - ( ) 8
  9. 9. Copyright © 2014 OPT, Inc. All Rights Reserved. Web AI Google AlphaZero
  10. 10. - 10
  11. 11. 1. (A/B ) 2. 3. 11
  12. 12. A/B exploitation exploration - ← - ← - AB ← - ← 12 A/B
  13. 13. Copyright © 2014 OPT, Inc. All Rights Reserved. Web AI Google AlphaZero
  14. 14. Copyright © 2014 OPT, Inc. All Rights Reserved. ε-Greedy   14
  15. 15. - ( MCMC SA ) - n ※ - ( → ∞ ) → 1/n ( → 0 ) Softmax 15
  16. 16. UCB (Softmax ) UCB1 16
  17. 17. Copyright © 2014 OPT, Inc. All Rights Reserved. Web AI Google AlphaZero
  18. 18. (UCB) UCB (CTR) 40% 18 CTR
  19. 19. python scikit-learn ( ) github https://github.com/johnmyleswhite/BanditsBook ( http://qiita.com/ysekky/items/4e782603f7592743625b 19
  20. 20. Copyright © 2014 OPT, Inc. All Rights Reserved. AI Web AI Google AlphaZero
  21. 21. 0 1 21
  22. 22. … tannsaku 22
  23. 23. •   - - - 23 1. 2. ( ) http://www.slideshare.net/TakashiKato2/ss-57966067
  24. 24. 2 ( ) ( ) 24 Minimax
  25. 25. (ε-Greedy ) (Softmax ) ※ [1] [15] http://labs.timedia.co.jp/author/author3a1b5/ 25
  26. 26. Copyright © 2014 OPT, Inc. All Rights Reserved. .Google AlphaZero Web AI Google AlphaZero
  27. 27. (αβ ) 1. UCB1 2. GoogleAlphaZero 27
  28. 28. Google AlphaZero 1. - 2. - AlphaZero - ( ) 3. - 1/1000 - elmo: 3500 / , AlphaZero: 4 / - - 1 3 / 28
  29. 29. Copyright © 2014 OPT, Inc. All Rights Reserved. . Web AI Google AlphaZero
  30. 30. AI GoogleAlphaZero AI 30

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