Active relevance feedback for difficult queries.

@inproceedings{xu-2008-active, author = {Zuobing Xu and Ram Akella}, editor = {James G. Shanahan and Sihem Amer-Yahia and Ioana Manolescu and Yi Zhang and David A. Evans and Alek Kolcz and Key-Sun Choi and Abdur Chowdhury}, title = {{Active relevance feedback for difficult queries}}, booktitle = {{Proceedings of the 17th ACM Conference on Information and Knowledge Management, CIKM 2008, Napa Valley, California, USA, October 26-30, 2008}}, pages = {459--468}, publisher = {ACM}, year = {2008}, url = {https://doi.org/10.1145/1458082.1458144}, doi = {https://doi.org/10.1145/1458082.1458144} }