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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422
파이썬 라이브러리를 활용한 머신러닝(번역개정판)
도록) 밀집된
NumPy
배열로 바꿔야 합니다.
11
In [14]:
print("BOW의 밀집 표현:\n", bag_of_words.toarray())
Out [14]:
BOW의 밀집 표현:
[[0 0 1 1 1 0 1 0 0 1 1 0 1]
[1 1 0 1 0 1 0 1 1 1 0 1 1]]
각 단어의 출현 횟수는
0
아니면
1
입니다. 즉
bards
_
words
에 있는 두 문자열 모두 같은 단어
를 두 개 이상 가지고 있지 않습니다. 이 특성 벡터를 어떻게 읽는지 살펴보겠습니다. 첫 번째
문자열(“
The
fool
doth
think
he
is
wise
,”)은 첫 번째 행으로 나타나며, 어휘 사전의 첫 번
째 단어 “
be
”가
0
번 나옵니다. 어휘 사전의 두 번째 단어 “
but
”도
0
번, 세 번째 단어 “
doth
”는
1
번 나오는 식입니다. 두 행을 보면 네 번째 단어 “
fool
”과 열 번째 단어 “
the
”와 열세 번째 단
어 “
wise
”가 두 문자열에 모두 포함되어 있습니다.
7.3.2
영화 리뷰에 대한
BOW
지금까지
BOW
처리 과정을 자세히 짚어봤습니다. 이제 영화 리뷰에 대한 감성 분석을 적용해
보겠습니다. 앞에서
IMDb
리뷰의 훈련 데이터와 테스트 데이터를 읽어서 작업할 문자열 리스
트로 바꿨습니다 (
text ...
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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.
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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.