May 2020
Beginner to intermediate
952 pages
24h 11m
Korean
Content preview from 핸즈온 머신러닝(2판): 사이킷런, 케라스, 텐서플로 2를 활용한 머신러닝, 딥러닝 완벽 실무
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449
11
장
심층 신경망 훈련하기
는 사용자 정의 콜백을 만들면 됩니다 (
self
.
model
.
optimizer
.
lr
을 바꾸어 옵티마이저의 학습
률을 업데이트할 수 있습니다 ).
50
주피터 노트북에 있는 ‘
1
사이클 스케줄링’을 참고하세요.
정리하면 지수 기반 스케줄링, 성능 기반 스케줄링,
1
사이클 스케줄링이 수렴 속도를 크게 높
일 수 있습니다.
51
한번 테스트해보세요!
11.4
규제를 사용해 과대적합 피하기
“나는 네 개의 파라미터가 있으면 코끼리 모양을 학습시킬 수 있고, 다섯 개가 있으면 코를 꿈틀
거리게 할 수 있다.”
_존 폰 노이만
John
von
Neumann
52
, 네이처
427
호에서 엔리코 페르미
Enrico
Fermi
53
가 인용함
수백만 개의 파라미터가 있으면 동물원 전체를 그려낼 수 있을지 모릅니다. 심층 신경망은 전
형적으로 수만 개, 때로는 수백만 개의 파라미터를 가지고 있습니다. 이 때문에 네트워크의 자
유도가 매우 높습니다. 즉, 대규모의 복잡한 데이터셋을 학습할 수 있다는 뜻입니다. 하지만 이
런 높은 자유도는 네트워크를 훈련 세트에 과대적합되기 쉽게 만듭니다. 규제가 필요합니다.
10
장에서 이미 최상의 규제 방법 중 하나인 조기 종료를 구현했습니다. 또한 배치 정규화는 불
안정한 그레이디언트 문제를 해결하기 위해 고안되었지만 꽤 괜찮은 규제 방법으로도 ...
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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.