April 2022
Intermediate to advanced
376 pages
4h 55m
Japanese
Content preview from ゼロから作るDeep Learning ❹ ―強化学習編
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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.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.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.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.
4章動的計画法
前章ではベルマン方程式について学びました。ベルマン方程式を使えば、連立方程式を得ることができます。それを解くことができれば、価値関数が求まります。このフローを図で表すと次のようになります。
図4-1 ベルマン方程式を使って価値関数を求める流れ
上のように、状態遷移確率
、報酬関数
、方策
の3つの情報からベルマン方程式を使って連立方程式が得られます。そして連立方程式を解くプログラム（連立方程式ソルバ）を使って価値関数を求めることができます。しかし、このような連立方程式を明示的に出して、それを直接解くという方法が有効なのは小さな問題だけです。実際には、状態と行動のパターン数が少し増えただけで手に負えなくなります。そこで登場するのが動的計画法（Dynamic Programming） ...
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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.