June 2018
Beginner to intermediate
304 pages
7h 38m
Korean
Content preview from 우아한 사이파이: 수학, 과학, 엔지니어링을 위한 파이썬 데이터 분석 라이브러리 SciPy
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73
2
장
넘파이와 사이파이의 분위수 정규화
반환값
-------
y
_
rows
:
linkage
행렬
행 군집화
y
_
cols
:
linkage
행렬
열 군집화
"""
y
_
rows
=
linkage
(
data
,
method
=
linkage
_
method
,
metric
=
distance
_
metric
)
y
_
cols
=
linkage
(
data
.
T
,
method
=
linkage
_
method
,
metric
=
distance
_
metric
)
return
y
_
rows
,
y
_
cols
요약하면
bicluster
( ) 함수는 입력 행렬과 입력 행렬의 전치 행렬
transpose
of
a
matrix
(행은 열이 되
고, 열은 행이 되는 행렬 )로
linkage
( ) 함수를 호출한다.
2.4
군집 시각화
군집화의 결과를 시각화하는 함수를 정의하자. 입력값의 행과 열을 다시 정렬하여 비슷한 행과
비슷한 열끼리 묶는다. 추가로 모든 행과 열에 대한 병합 트리를 보여준다.
병합 트리의 각 행과 열은 관측치의 유사도를 나타낸다. 병합 트리는 관측치의 유사도(거리 )
수준을 나타내는 덴드로그램
dendrogram
으로 표시된다(가지
branch
길이가 짧을수록 관측치는 유사
하다).
아래의 코드에는 매개변수를 하드코딩한 부분이 꽤 있다. 정확한 비율의 그래프를 그리기 위한 ...
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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.