More than Just Lines on a Map: Best Practices for U.S Bike Routes
Causal inference from nonrandomized data key concepts and recent trends
1. 1
Causal inference from
Causal inference from
nonrandomized data key concepts
nonrandomized data key concepts
and recent trends
and recent trends
이봉호
이봉호
25th Jun, 2021
25th Jun, 2021
14. 14
예시
예시
X,Y,Z는관심대상의확률변수이며, 는독립오차항
연산은확률변수X를 처럼외생적으로고정시키는상황
Z →X의Causal Path는끊어지게됨
좌측:
관찰된자료(X,Y,Z)는식(4.2)를따르는확률분포P의표본
우측:
(Y, Z)의결합분포는 이고 로정의
, ,
UX UY UZ
do(X = )
x0 X = x0
Z = ( ), X = f X(Z, ), Y = f Y(X, Z, )
fZ UZ UX UY
Z = ( ), X = , Y = ( , Z, )
fZ UZ x0 fY x0 UY
P(Y, Z|do(X = ))
x0 (Y, Z)
Pm