September 2014
Intermediate to advanced
236 pages
4h 17m
Japanese
Content preview from Think Bayes ―プログラマのためのベイズ統計入門
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.
■
179
15
章
次元を扱う
15.1
へそ細菌
へそ生物多様性
2.0
（
Belly Button Biodiversity 2.0
：
BBB2
）は、ヒトのおへそにいる
細菌の種類を探そうという全米市民科学プロジェクトである（
http://www.yourwildlife.
org/projects/belly-button-biodiversity/
）
＊
1
。このプロジェクトは、滑稽に見えるかもしれ
ないが、ヒトのミクロビオーム（
microbiome
）、ヒトの皮膚や体の部位に棲息する微生
物群への関心の高まりを反映している。
BBB2
の研究者たちは、予備調査において、
60
人のボランティアのおへそから、綿
棒でスワッブを採取して、（
DNA
ポリメラーゼによる伸長反応を基本とした）多重ピロ
シーケンスを用いて、
16S rDNA
のシーケンス断片の抽出を行い、断片の種を識別同定
した。同定された断片は、「読まれた」（
read
）と呼ばれる。
このデータを使って、次のような関連質問に答えられる。
●
観察された種数に基づいて、この環境下での全種数を推定できるか。
●
各種について、占有率（
prevalence
）、すなわち、全体の個数のうちその種がどの
程度の割合か、を推定できるか。
●
追加のサンプル収集を計画しているとして、新種をいくつ見つけられると予測で
きるか。
●
観察された種の割合が事前に決められたしきい値に達するまで増えるには、どれ
だけの読みが必要か。
これらの質問は、未知種問題（
Unseen Species pr ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.