August 2021
Beginner to intermediate
720 pages
15h 32m
Korean
Content preview from fastai와 파이토치가 만나 꽃피운 딥러닝
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599
16
학습 과정
이렇게 만든 콜백 함수를 다음처럼
Optimizer
의
cbs
인자로 넣을 수 있습니다.
Learner
객체
가 해당 함수를 나중에 호출하여 옵티마이저 생성하므로, 여기서는
partial
을 사용했습니다.
74
opt_func = partial(Optimizer, cbs=[sgd_cb])
학습이 잘 수행되는지 확인해보죠.
learn = get_learner(opt_func=opt_func)
learn.fit(3, 0.03)
epoch train
loss valid
loss accuracy time
0 2
.
730918 2
.
009971 0
.
332739 00
:
09
1 2
.
204893 1
.
747202 0
.
441529 00
:
09
2 1
.
875621 1
.
684515 0
.
445350 00
:
09
잘 작동하네요!
fastai
로
SGD
를 밑바닥부터 만드는 방법을 살펴봤습니다. 이번에는 ‘모멘텀’이
무엇이고 기존 옵티마이저에 어떻게 추가하는지 알아봅니다.
16.3
4
장에서 설명한 바와 같이
SGD
는 산의 정상에서부터 매번 가장 경사가 급한 방향으로 한 단
계씩 내려오는 과정으로 비유할 수 있습니다. 그런데 산 아래로 공을 굴려 보내는 상황이라면
어떨까요? 매번 가장 가파른 경사를 따라 내려가지 않겠죠. 공에
(
)가 붙기 때문
이죠. 가속도가 더 큰 공
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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.