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(Jun Kim)

i2r.jun@gmail.com
Sprint 

“TensorFlow, Python Apache Zeppelin”
2017. 08. 15.
, !
• 

• contributor

• :

- Deep Learning:

‣ Image Retrieval

‣ Music Information Retrieval

‣ Generative Adversarial Network

- Machine Learning

- Online Analytical Processing

- Data Warehouse
NOTICE!
• “ ”

- 

- “ ~ ~” 

• , 

- 

•
!
오늘의	목표
DEMO
Deep Learning
• 

- 

• 

- 

-
!

• (neuron)
Raschka, Sebastian. Python machine learning. Packt Publishing Ltd, 2015.
(1) 

(2)
(3) 

http://cs231n.github.io/neural-networks-1/
0
1
2
(3) (w)
(1) ( ) (2) (w)
(4) Activation (f)
(5)
w, b !
weight (w)
bias (b)
activation (f)
?
…
0 =0.9
1 =0.05
9 =0.01
10
( 0~9 10 )
…
?
Torres, Jordi. First contact with TensorFlow. Lulu. com, 2016.
<softmax>
Activation 10 (w*x + b)
(0~9)
1
784(28x28)
: 9
: 9
: 9
Error
: 9
Error
w, b !
: [9, 3]
Error
100 !
…
…
w, b
?
!
(상황극으로 배우는 딥러닝)
( ) ( ) ( ) .
!
.
?
( ) !
= !
( )
(Gradient Descent)
1) ( )
2) w 

( cross entropy )
3) w
4) 1
Raschka, Sebastian. Python machine learning. Packt Publishing Ltd, 2015.
• Zeppelin:

- 

- 

- 

• TensorFlow:

- 

• Matplotlib:

-
! !
• & 

• GPU ! ( CPU )
“TensorFlow™ is an open source software library
for numerical computation using data flow graphs.”
https://www.tensorflow.org/
Data Flow Graph
• TensorFlow
data flow graph 

• Node edge :

- Node:
- Edge:
• Graph (feed)
!
https://www.tensorflow.org/
TensorFlow
, , http://hunkim.github.io/ml/
,
•
?
• “ ” 

- http://hunkim.github.io/ml/
.
(Jun Kim)

i2r.jun@gmail.com

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