April 2019
Beginner to intermediate
480 pages
12h 34m
Korean
Content preview from 파이썬 라이브러리를 활용한 머신러닝(번역개정판): 사이킷런 핵심 개발자가 쓴 머신러닝과 데이터 과학 실무서
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146
파이썬 라이브러리를 활용한 머신러닝(번역개정판)
와
C
모두 모델의 복잡도를 조정하며 둘 다 큰 값이 더 복잡한 모델을 만듭니다. 그러므로 연관
성이 많은 이 두 매개변수를 잘 설정하려면
C
와
gamma
를 함께 조정해야 합니다.
2.3.9
신경망(딥러닝)
신경망이라 알려진 알고리즘들은 최근 ‘딥러닝
deep
learning
’이란 이름으로 다시 주목받고 있습니
다. 딥러닝이 많은 머신러닝 애플리케이션에서 매우 희망적인 성과를 보여주고 있지만, 특정
분야에 정교하게 적용되어 있을 때가 많습니다. 여기서는 복잡한 딥러닝 알고리즘의 출발점이
며 비교적 간단하게 분류와 회귀에 쓸 수 있는
다층 퍼셉트론
multilayer
perceptrons
,
MLP
을 다루겠습니
다. 다층 퍼셉트론은 (기본 ) 피드포워드
feed
-
forward
신경망, 또는 종종 그냥 신경망이라고도 합
니다.
61
신경망 모델
MLP
는 여러 단계를 거쳐 결정을 만들어내는 선형 모델의 일반화된 모습이라고 볼 수 있습니다.
선형 회귀 모델의 예측 공식은 다음과 같았습니다.
[] [] [] [] ...[][]y wx wx wxppb00 11×× ×
=+++ +
t
글로 설명하면
ˆ
y
은
x
[
0
]에서
x
[
p
]까지의 입력 특성과
w
[
0
]에서
w
[
p
]까지 학습된 계수의 가중
치 합입니다. 이를 [그림
2
-
44
]로 나타냈습니다. ...
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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.