January 2017
Beginner to intermediate
312 pages
7h 3m
Korean
Content preview from 밑바닥부터 시작하는 딥러닝
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
258
밑바닥부터 시작하는 딥러닝
7.7.2
AlexNet
LeNet
과 비교해 훨씬 최근인
2012
년에 발표된
AlexNet
은 딥러닝 열풍을 일으키는 데 큰 역
할을 했습니다. [그림
7
-
28
]에서 보듯 그 구성은 기본적으로
LeNet
과 크게 다르지 않습니다.
그림
7-28
AlexNet
의 구성
[
21
]
완전연결
최대 풀링
최대 풀링
AlexNet
은 합성곱 계층과 풀링 계층을 거듭하며 마지막으로 완전연결 계층을 거쳐 결과를 출
력합니다.
LeNet
에서 큰 구조는 바뀌지 않습니다만,
AlexNet
에서는 다음과 같은 변화를 주었
습니다.
●
활성화 함수로
ReLU
를 이용한다.
●
LRN
Local
Response
Normalization
이라는 국소적 정규화를 실시하는 계층을 이용한다.
●
드롭아웃을 사용한다.
이상에서 보듯 네트워크 구성 면에서는
LeNet
과
AlexNet
에 큰 차이는 없습니다. 그러나 이를
둘러싼 환경과 컴퓨터 기술이 큰 진보를 이룬 것이죠. 대량의 데이터를 누구나 얻을 수 있게 되
었고, 병렬 계산에 특화된
GPU
가 보급되면서 대량의 연산을 고속으로 수행할 수 있게 되었습
니다. 빅 데이터와
GPU
, 이것이 딥러닝 발전의 큰 원동력입니다.
딥러닝(심층 신경망)에는 대부분 수많은 매개변수가 쓰입니다. 그래서 학습하려면 엄청난 양의 계
산을 해야만 하죠. 또한, ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.