第14回 Machine Learning15minutes! 発表資料

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~ AI ~

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Python
Scala ADPLAN
Scala( )
2

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Web
AI
AI
3

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Copyright © 2014 OPT, Inc. All Rights Reserved.
Web
Web
AI
AI

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ROI
5

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A/B
N
6

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- CPA( = Cost / CV ) CTR ( = CLICK / )
- ( )
7

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Copyright © 2014 OPT, Inc. All Rights Reserved.
Web
AI
AI

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-
9

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1. (A/B )
2.
3.
10

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A/B
exploitation exploration
- ←
- ←
- AB ←
- ←
11
A/B

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Web
AI
AI

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ε-Greedy
13

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Softmax 14
MCMC SA
- ( MCMC SA )
- n
※
( → ∞ ) → 1/n
( → 0 )

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UCB
(Softmax
)
UCB1
15

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Web
AI
AI

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(UCB)
UCB
(CTR)
40%
17
CTR

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python scikit-learn
( )
github
https://github.com/johnmyleswhite/BanditsBook
(
http://qiita.com/ysekky/items/4e782603f7592743625b
18

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AI
Web
AI
AI

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0 1
20

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…
tannsaku
( )
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30
→ 361
( )
http://www.slideshare.net/TakashiKato2/ss-57966067
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. AI
Web
AI
AI

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2
( )
( )
24
Minimax

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( )
•
25
αβ

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(αβ )
1. UCB1
2.
( ) 26

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1.
2. ( )
3.
( Google Alpha Go 1
)
27

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AI
-
-
28

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Copyright © 2014 OPT, Inc. All Rights Reserved.
.
Web
AI
AI

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AI
AI
AI
( )
30