Expected reciprocal rank for graded relevance.

@inproceedings{chapelle-2009-expected, author = {Olivier Chapelle and Donald Metlzer and Ya Zhang and Pierre Grinspan}, editor = {David Wai-Lok Cheung and Il-Yeol Song and Wesley W. Chu and Xiaohua Hu and Jimmy Lin}, title = {{Expected reciprocal rank for graded relevance}}, booktitle = {{Proceedings of the 18th ACM Conference on Information and Knowledge Management, CIKM 2009, Hong Kong, China, November 2-6, 2009}}, pages = {621--630}, publisher = {ACM}, year = {2009}, url = {https://doi.org/10.1145/1645953.1646033}, doi = {https://doi.org/10.1145/1645953.1646033} }