June 2024
Beginner to intermediate
352 pages
9h 29m
Korean
Content preview from 개발자를 위한 필수 수학
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326
개발자를 위한 필수 수학
합니다. 하지만 확률
x
를 관찰할 확률을 구하려면
x
값의 범위 안에 있는 면적을 계산해야 합
니다.
다행히도
1
장에서 정의한
approximate
_
integral
()
함수를 사용할 수 있습니다. 마지막 몇
줄에 표시된 것처럼 성공률이
90
%보다 클 확률과
90
%보다 작을 확률을 계산할 수 있습니다.
A.4
베이즈 정리 유도하기
베이즈 정리의 작동 원리를 이해하기 위해 사고 실험을 해보겠습니다. 인구가
10
만 명이라고
가정합니다. 여기에 주어진 확률을 곱해 커피를 마시는 사람의 수와 암에 걸린 사람의 수를 다
음과 같이 구합니다.
N = 100,000
P
(커피)
= 0.65
P
(암)
= 0.005
커피 마시는 사람
= 65,000
암 환자
= 500
커피를 마시는 사람은
65
,
000
명이고 암 환자는
500
명입니다. 그렇다면
500
명의 암 환자 중
커피를 마시는 사람은 몇 명일까요? 조건부 확률
P
(커피|암)에
500
명을 곱하면 암 환자 중 커
피를 마시는 사람은
425
명입니다.
P
(커피|암)
= 0.85
암 환자 중 커피를 마시는 사람
= 500
×
0.85 = 425
그렇다면 커피를 마시는 사람 중 암에 걸린 사람의 비율은 얼마나 될까요? 두 숫자를 어떻게
나눌까요? 우리는 이미 커피를 마시고 암에 걸린 사람의 수를 알고 있습니다. 따라서 ...
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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.