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밑바닥부터 시작하는 데이터 과학 데이터 분석을 위한 파이썬 프로그래밍과 수학·통계 기초
book

밑바닥부터 시작하는 데이터 과학 데이터 분석을 위한 파이썬 프로그래밍과 수학·통계 기초

by Joel Grus, Hangyeol Kim, Seongju Ha, Eunjung Park
May 2022
Beginner to intermediate
448 pages
13h 7m
Korean
Insight
Content preview from 밑바닥부터 시작하는 데이터 과학 데이터 분석을 위한 파이썬 프로그래밍과 수학·통계 기초
Data Science
264
󻱴󽴔󽴔󺧴󺲻󺞬
def tensor
_
combine(f: Callable[[float, float], float],
t1: Tensor,
t2: Tensor) -> Tensor:
"""
텐서의
대칭되는
t1
t2
일괄적으로
함수를
적용
"""
if is
_
1d(t1):
return [f(x, y) for x, y in zip(t1, t2)]
else:
return [tensor
_
combine(f, t1
_
i, t2
_
i)
for t1
_
i, t2
_
i in zip(t1, t2)]
import operator
assert tensor
_
combine(operator.add, [1, 2, 3], [4, 5, 6]) == [5, 7, 9]
assert tensor
_
combine(operator.mul, [1, 2, 3], [4, 5, 6]) == [4, 10, 18]
19.2
층 추상화
18
장에서는 각각
sigmoid(dot(weights, inputs))
를 계산해 주는 두 층으로 구성
된 단순한 신경망을 만들어 보았다.
이러한 구조는 실제 뉴런이 작동하는 방식과 비슷하지만, 딥러닝에서는 다양
한 신경망 구조를 사용할 것이다. 가령 각 뉴런이 이전 입력값을 기억하도록 만
들거나 시그모이드 대신 다른 활성화 함수(
activation
function
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Publisher Resources

ISBN: 9788966262571