May 2020
Beginner to intermediate
952 pages
24h 11m
Korean
Content preview from 핸즈온 머신러닝(2판): 사이킷런, 케라스, 텐서플로 2를 활용한 머신러닝, 딥러닝 완벽 실무
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773
18
장
강화 학습
언제든지 각 지표의 값을 확인하고 싶으면
result
()
메서드를 호출합니다 (예를 들면
train
_
metrics
[
0
].
result
()
). 또는
log
_
metrics
(
train
_
metrics
)
를 호출하여 모든 지표를 로그
에 기록할 수 있습니다 (이 함수는
tf
_
agents
.
eval
.
metric
_
utils
패키지에 있습니다 ).
>>> from tf_agents.eval.metric_utils import log_metrics
>>> import logging
>>> logging.get_logger().set_level(logging.INFO)
>>> log_metrics(train_metrics)
[...]
NumberOfEpisodes = 0
EnvironmentSteps = 0
AverageReturn = 0.0
AverageEpisodeLength = 0.0
다음으로 수집 드라이버를 만들어봅시다.
18.12.10
수집 드라이버 만들기
[그림
18
-
13
]에서 살펴보았듯이 드라이버는 주어진 정책으로 환경을 탐색하고 경험을 수집하
고 옵저버에 이를 전파하는 객체입니다. 각 스텝에서 다음 작업을 수행합니다.
•
드라이버는 현재 타입 스텝을 수집 정책에 전달합니다. 수집 정책은 타임 스텝을 사용해 행동을 선택하고
행동을 포함한
행동 스텝
action ...
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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.