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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343
9
장
비지도 학습
식
9-4
q
(
z
)
에서
p
(
z
|
X
)
로의
KL
발산
log
|
log log |
,
log log
log log , log
log log , log
log log , log
log ELBO
log ,
KL q
q
q
q
qq q
qq q
q
q
D qp
p
qp
p
q
p
qp p
qp p
pp q
p
ELBO p
z
zX
z zX
zX
z
X
z zX X
z zX X
X zX z
X
zX
log
q
q
z
실전에서는 다른 기법으로
ELBO
를 최대화합니다.
평균장
변분
추론
mean
field
variational
inference
에서
는
ELBO
식을 계산할 수 있는 형태로 단순화하기 위해 분포 패밀리
q
(
z
;
λ
)
와 사전 확률
p
(
z
)
를 매우 주의 깊게 선택해야 합니다. 아쉽지만 이를 위한 일반적인 방법이 없습니다. 올바른 분
포 패밀리 사전 확률을 선택하는 것은 작업에 따라 다르면 수학적 기술이 필요합니다. 예를 들
어 사이킷런의
BayesianGaussianMixture
클래스에서 사용하는 분포와 하한식은 ...
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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.