Relevance ranking for vertical search engines / 
edited by Bo Long, Yi Chang 
 - Waltham, MA :  Elsevier/Morgan Kaufmann,  2014 
 - 1 online resource (xxiii, 239 pages) :  ill. some col. ;  23  cm. 
<br/><br/>Includes bibliographical references (pages 201-221) and index 
<br/><br/><label>ISBN: </label>9780124071711 (pbk.) 0124071716 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Database searching<br/>Relevance<br/>Search engines--Programming<br/>Sorting (Electronic computers)