March 2018
Beginner to intermediate
332 pages
6h 1m
Korean
Content preview from 9가지 사례로 익히는 고급 스파크 분석(2판): 현실 세계 빅데이터로 배우는 데이터 과학과 머신러닝
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329
11
장
파이스파크와 썬더로 신경 영상 데이터 분석하기
그림
11-10
소속 군집별로 색칠된
3D
화소
학습된 군집은 제브라피쉬 뇌 구조의 특정 요소들을 재현하고 있음이 분명하다. 만약 원본 데
이터의 해상도가 세포 내부 구조까지 해석할 수 있을 만큼 고해상도라면, 영사된 데이터 속의
신경 세포 개수의 추정치와 동일한
k
값으로
3D
화소를 먼저 군집화해볼 수도 있었을 것이다.
이 작업으로 전체 신경 세포들을 효과적으로 배치할 수 있게 된다. 그런 다음 각 신경 세포에
대한 시계열을 정의하고, 이 시계열을 이용해 다른 기능 범주를 다시 군집화할 수 있을 것이다.
11.5
한 걸음 더 나아가기
썬더는 상대적으로 최근에 시작된 프로젝트지만, 상당히 풍부한 기능을 제공한다. 시계열과 군
집화에 관한 통계 기능 외에도, 행렬 분해, 회귀, 분류, 시각화 도구 모듈이 포함되어 있다. 수
많은 기능을 잘 설명해놓은 훌륭한 문서와 튜토리얼도 존재한다. 썬더의 동작 원리를 확인하고
싶다면 『네이처 메서드
Nature
Method
』
2014
년
7
월호에 썬더 개발자들이 게재한 「클러스터 컴퓨팅
을 활용한 두뇌 활동 매핑
Mapping
brain
activity
at
scale
with
cluster
computing
」(
https
://
bit
.
ly
/
186YPqi
) 논문
을 보기 바란다. ...
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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.