March 2023
Beginner to intermediate
436 pages
9h 20m
Korean
Content preview from 머신러닝 시스템 설계
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104
머신러닝 시스템 설계
가와 사람 간의 홉(연결 횟수)을 알 수 없기 때문이죠. 예를 들어, ‘
Zhenzhong
Xu
’와 ‘
USA
’
사이에는 홉이
3
개인 반면 ‘
Chloe
He
’와 ‘
USA
’ 사이에는 홉이
2
개입니다. 문서 데이터베이스
에서도 마찬가지로 이러한 유형의 쿼리를 수행하기 쉽지 않습니다.
데이터 모델에 따라 수행하기 쉬운 쿼리가 있고 어려운 쿼리가 있습니다. 따라서 애플리케이션
에 적합한 데이터 모델을 선택하는 것이 바람직하죠.
3.3.3 3.3.3
정형 데이터 정형 데이터
vsvs
. 비정형 데이터. 비정형 데이터
정형 데이터는 미리 정의된 데이터 모델, 즉 데이터 스키마를 따릅니다. 예를 들면 이런 식입
니다. 데이터 모델은 각 데이터 항목이 두 개의 값으로 구성되도록 지정하고, 첫 번째 값인
‘
name
’은 최대
50
자의 문자열이고 두 번째 값인 ‘
age
’는
0
과
200
사이
8
비트 정수입니다. 미
리 정의된 구조를 사용하면 데이터를 분석하기가 더 쉽습니다. 데이터베이스에 있는 사람들의
평균 연령을 알고 싶다면 모든 연령 값을 추출하고 평균을 내기만 하면 되죠.
정형 데이터의 단점은 데이터를 미리 정의된 스키마에 맞춰줘야 한다는 점입니다. 스키마가 변
경되면 모든 데이터를 소급해 업데이트해야 하며, 따라서 종종 프로세스에 기이한 버그가 발생
합니다. ...
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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.