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.
196
■
15
章
次元を扱う
MakePmf
を提供することを覚えておくとよい。
metapmf
は、
n
を条件とした占有率の分布を含むメタ
Pmf
である。
MakeMixture
は、メ
タ
Pmf
をまとめて
mix
にする。これは、条件付き分布をまとめて占有率の単一分布に
する。
図15-4は、ほとんどの読み込みに出てくる
5
種の結果を示す。占有率が最も高い種
は、
400
読み込みの
23%
を占めるが、未知の種の存在がほぼ確実なので、占有率に対
する最も可能性が高そうな値は
20%
であり、これは信用区間
17%
から
23%
で
90%
の確
率だ。
1（ 9 2 ）
2（ 5 2 ）
3（47）
4（ 3 8 ）
5（ 1 5 ）
占有率
図 15-4 検体B1242 の占有率の分布
15.10
予測分布
本章の冒頭で私は、
4
つの関連する質問の形で、未知種族問題
＊
1
を紹介した。
n
に対
する事後確率分布と各種の占有率を計算することで、最初の
2
つの質問に答えた。
＊
1
訳注：原文は、
hidden species problem
15.10
予測分布
■
197
残りの
2
つの質問は次のようなものだった。
●
追加のサンプル収集を計画しているとして、新種族をいくつ見つけられると予測
できるか。
●
観察された種族の割合が与えられたしきい値に達するまで増える
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.