@article{raman_etal_14a,
 author = {Raman, Karthik and Bennett, Paul N. and Collins-Thompson, Kevyn},
 title = {Understanding Intrinsic Diversity in Web Search: Improving Whole-Session Relevance},
 journal = {ACM Trans. Inf. Syst.},
 issue_date = {October 2014},
 volume = {32},
 number = {4},
 month = oct,
 year = {2014},
 issn = {1046-8188},
 pages = {20:1--20:45},
 articleno = {20},
 numpages = {45},
 url = {http://doi.acm.org/10.1145/2629553},
 doi = {10.1145/2629553},
 acmid = {2629553},
 publisher = {ACM},
 address = {New York, NY, USA},
 keywords = {Search session analysis, diversity, proactive search, search behavior},
}