September 2023
Beginner to intermediate
1044 pages
27h 52m
Korean
Content preview from 핸즈온 머신러닝(3판)
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555
13
장
텐서플로를 사용한 데이터 적재와 전처리
13.3
케라스의 전처리 층
신경망에 사용할 데이터를 준비하려면 일반적으로 수치 특성 정규화, 범주형 특성이나 텍스트
인코딩, 이미지 자르기와 크기 조정 등의 작업이 필요합니다. 이러한 작업을 위한 몇 가지 방법
이 있습니다.
•
훈련 데이터 파일을 준비할 때 넘파이, 판다스, 사이킷런과 같은 도구를 사용하여 미리 전처리를 수행할
수 있습니다. 제품에 투입한 모델이 훈련할 때와 비슷하게 전처리된 입력을 받으려면 제품 환경에 정확히
동일한 전처리 단계를 적용해야 합니다.
•
이 장의 앞부분에서 수행한 것처럼 데이터셋의
map()
메서드를 사용하여 데이터셋의 모든 원소에 전처리
함수를 적용하여
tf.data
로 데이터를 로드하는 동안 바로 전처리할 수 있습니다. 여기서도 제품 환경에서
동일한 전처리 단계를 적용해야 합니다.
•
모델 내부에 전처리 층을 직접 포함시켜 훈련 중에 즉시 모든 입력 데이터를 전처리합니다. 그런 다음 제
품 환경에서 동일한 전처리 층을 사용하는 것입니다. 이 장의 나머지 부분에서는 이 접근 방식에 관해 살
펴봅니다.
케라스는 모델에 포함할 수 있는 다양한 전처리 층을 제공하며 이를 수치 특성, 범주형 특성,
이미지 및 텍스트에 적용할 수 있습니다. 다음 절에서는 수치 특성, 범주형 특성과 ...
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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.