August 2022
Beginner to intermediate
436 pages
9h 43m
Korean
Content preview from SQL로 시작하는 데이터 분석
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.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.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.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.
167
4
장
코호트 분석
3
장에서는 다양한 시계열 분석을 알아봤습니다. 이 장에서는 시계열 분석과 관련해, 비즈니스
를 비롯한 여러 분야에서 활용되는
코호트
cohort
(집단) 분석을 알아봅니다.
코호트 분석
cohort
analysis
을 처음 접했던 때가 기억납니다. 당시 필자는 작은 스타트업에서 데이
터 분석 업무를 처음으로 맡아
CEO
와 구매 데이터 분석을 논의하고 있었습니다.
CEO
는 고객
을 여러 집단으로 나누고 시간에 따른 행동 변화가 발생하는지 집단별로 확인해보자고 제안했
습니다. 필자는 그런 분석이 경영대학 전공 서적에서나 다룰 법하며 실제로는 쓸모없다고 생각
했습니다. 하지만 감히
CEO
의 제안을 거부할 수는 없어 제안대로 분석을 했더니 놀랍게도 좋
은 인사이트를 얻었습니다. 고객을 여러 집단으로 나누고 집단별 행동 변화를 추적하는 일은
다양한 편향
bias
을 제거하고 데이터를 분석하는 데 강력한 방법입니다. 코호트 분석은 집단별
행동 패턴이 어떻게 변화하는지 비교하는 데 유용합니다.
이 장에서는 코호트의 정의와 코호트 분석을 위한 코드 작성법을 알아봅니다. 먼저, 예제에
서 사용할 미국 의회 입법가
legislator
데이터셋을 소개한 후 리텐션
retention
분석을 수행하는 방법
과 코호트 정의, 희소 데이터 처리 등 여러 문제 해결 방법을 살펴봅니다. ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.