Sugiyama Masashi  <br/><br/>
Density ratio estimation in machine learning 
Masashi Sugiyama, Taiji Suzuki  and Takafumi Kanamori  
 - Cambridge  Cambridge University Press  2012 
<br/><br/><label>ISBN: </label>9781139035613 
<br/><br/><label>Subjects--Index Terms: </label>Pattern Recognition and Machine Learning