* Full paper (10 pages) accepted for publication in proceedings of ACM
SIGIR International Conference on the Theory of Information Retrieval
(ICTIR'16) Access Paper or Ask Questions
* In Proceeding of 5th International Conference of Iranian
Operations Research Society (ICIORS), Tabriz, Iran, 2012 * arXiv admin note: text overlap with arXiv:1305.2684 by other authors Access Paper or Ask Questions