Learning to rank for freshness and relevance.

@inproceedings{dai-2011-learning, author = {Na Dai and Milad Shokouhi and Brian D. Davison}, editor = {Wei-Ying Ma and Jian-Yun Nie and Ricardo Baeza-Yates and Tat-Seng Chua and W. Bruce Croft}, title = {{Learning to rank for freshness and relevance}}, booktitle = {{Proceeding of the 34th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2011, Beijing, China, July 25-29, 2011}}, pages = {95--104}, publisher = {ACM}, year = {2011}, url = {https://doi.org/10.1145/2009916.2009933}, doi = {https://doi.org/10.1145/2009916.2009933} }