Christopher  D. Manning, Prabhakar Raghavan and Heinrich schutze <br/><br/>
Introduction to  information  retrieval   A textbook for  web  Era information  retrieval   Xxi,482 p. : ill.; 26 cm 
By Christopher D. Manning  Prabhakar raghavan and Heinrich schutze 
 -  1st Edition  
 -  Cambridge  University  press  7 July 2008 
<br/><br/> Web search, text classification.  
<br/><br/><label>ISBN: </label>9780521865715