December 2024
Beginner to intermediate
336 pages
7h 41m
Korean
Content preview from 로우코드 AI
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24
로우코드 AI
NOTE
정형 데이터도 스트리밍할 수 있습니다. 정형 데이터와 비정형 데이터는 데이터 유형의 속성에
따라 나뉩니다. 반면 스트리밍과 배치 처리는 지연 시간에 관한 속성이죠. 데이터 유형과 속성에 관한 자
세한 내용은
2
장에서 다룹니다.
1.2.3
데이터 전처리
데이터 정리를 수행하려면 누락된 값, 중복, 이상치, 서식 문제와 사람의 실수로 발생한 일관성
없는 데이터를 처리해야 합니다. 실제 데이터는 다듬어지지 않고 복잡하며, 다양한 가정이 섞
여 있습니다. 가령 데이터가 정규 분포를 따른다고 가정할 수 있습니다. 정규 분포란 데이터가
왜곡 없이 대칭적으로 분포하고 대부분의 값이 중앙에 모여 있으며, 중앙(평균)에서 멀어질수
록 값의 빈도가 감소한다는 의미입니다.
캘리포니아 사막의 도시 팜스프링스
Palm
Springs
에서
8
월에 처음으로 우산 판매량이 증가했다는
보고가 있었다고 가정해 보겠습니다. 데이터가 정상 분포를 따른다고 봐야 할까요? 아니면 이
상치로 간주해야 할까요?
8
월의 우산 판매량 예측 결과가 왜곡될 수 있을까요? 만약 데이터가
정규 분포를 따르지 않는다면, 모든 레코드를 [
0
,
1
]이나 [-
1
,
1
] 범위로 그룹화하여 정규화해야
합니다. 데이터를 정규화하면
ML
모델을 더 쉽고 빠르게 학습시킬 수 있습니다. 정규화는
7
장
에서 ...
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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.