April 2019
Beginner to intermediate
480 pages
12h 34m
Korean
Content preview from 파이썬 라이브러리를 활용한 머신러닝(번역개정판): 사이킷런 핵심 개발자가 쓴 머신러닝과 데이터 과학 실무서
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284
파이썬 라이브러리를 활용한 머신러닝(번역개정판)
In [17]:
logreg = LogisticRegression()
logreg.t(X_train_trans, y_train)
X_test_trans = ct.transform(X_test)
print("테스트 점수: {:.2f}".format(logreg.score(X_test_trans, y_test)))
Out [17]:
테스트 점수: 0.81
이 경우에 데이터의 스케일이 영향을 미치지 못했습니다. 하나의 변환기로 모든 전처리 단계를
캡슐화하면 장점이 더 있습니다. 나중에 이에 대해 설명하겠습니다.
ColumnTransformer
안
의 단계에 접근하려면
named
_
transformers
_ 속성을 사용합니다.
In [18]:
ct.named_transformers_.onehot
Out [18]:
OneHotEncoder(categorical_features=None, categories=None,
dtype=<class 'numpy.oat64'>, handle_unknown='error',
n_values=None, sparse=False)
4.3
make
_
column
_
transformer
로 간편하게
ColumnTransformer
만들기
앞서 설명한 대로
ColumnTransformer
를 만들면 ...
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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.