Fast exact maximum likelihood estimation for mixture of language models.

@inproceedings{zhang-2007-fast, author = {Yi Zhang and Wei Xu}, editor = {Wessel Kraaij and Arjen P. de Vries and Charles L. A. Clarke and Norbert Fuhr and Noriko Kando}, title = {{Fast exact maximum likelihood estimation for mixture of language models}}, booktitle = {{SIGIR 2007: Proceedings of the 30th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, Amsterdam, The Netherlands, July 23-27, 2007}}, pages = {865--866}, publisher = {ACM}, year = {2007}, url = {https://doi.org/10.1145/1277741.1277948}, doi = {https://doi.org/10.1145/1277741.1277948} }