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book
밑바닥부터 시작하는 딥러닝 5
by
사이토 고키
,
개앞맵시(이복연)
October 2024
Beginner to intermediate
340 pages
7h 38m
Korean
Hanbit Media, Inc.
Content preview from
밑바닥부터 시작하는 딥러닝 5
101
3
장
다변량 정규 분포
3.4.3
실제 데이터 사용
이제 실제 데이터를 이용하여 다변량 정규 분포의 최대 가능도 추정에 대해 알아봅시다. 지
난번과 마찬가지로
SOCR
데이터
[
2
]
를 데이터셋으로 이용하지만, 이번에는 키와 몸무게의 쌍
데이터를 사용합니다
(
지난번에는 키만 추출하여 사용했습니다
)
. 파일은
step03
/
height
_
weight
.
txt
에 있습니다. 이 데이터셋에는
2
만
5
천 개의 키와 몸무게 데이터가 담겨 있습니다.
먼저 데이터를 불러옵니다.
import
os
import
numpy
as
np
import
matplotlib
.
pyplot
as
plt
path
=
os
.
path
.
join(os
.
path
.
dirname(
__
file
__
),
'height
_
weight
.
txt'
)
xs
=
np
.
loadtxt(path)
print
(xs
.
shape)
실행 결과
(25000, 2)
xs
의 형상은
(
25000
,
2
)
입니다. 키와 몸무게로 구성된
2
만
5
천 개의 벡터가 있음을 뜻합니다.
이 데이터로 산점도를 그려봅시다.
2
만
5
천 개 중에서 처음
500
개(
xs
[:
500
])
만 추출하여 그리
겠습니다.
small_xs
=
xs[:
500
]
plt
.
scatter(small
_
xs[:,
0
], small
_
xs[:,
1
])
#
산점도
그리기
plt
.
xlabel(
'Height(cm)'
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Publisher Resources
ISBN: 9791169212960