Domain Adaptation with Multiple Sources
i hz (x) = zi Di (x)hi (x) j zj Dj (x) i, errDi (hi , f )  h1 h2 . . . hk D2 D1 . . . Dk D = i i Di
Yishay Mansour Mehr yar Mohri Afshin Rostamizadeh ID: W31

D

ingle hypothesis fits ANY mixture!

Theorem: For any fixed target function f there exists a single hypothesis hz combination that does well for any mixture  ,
S f , z  , , errD (hz , f )