Hierarchical pitman-yor language model for information retrieval.

@inproceedings{momtazi-2010-hierarchical, author = {Saeedeh Momtazi and Dietrich Klakow}, editor = {Fabio Crestani and St\'{e}phane Marchand-Maillet and Hsin-Hsi Chen and Efthimis N. Efthimiadis and Jacques Savoy}, title = {{Hierarchical pitman-yor language model for information retrieval}}, booktitle = {{Proceeding of the 33rd International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2010, Geneva, Switzerland, July 19-23, 2010}}, pages = {793--794}, publisher = {ACM}, year = {2010}, url = {https://doi.org/10.1145/1835449.1835619}, doi = {https://doi.org/10.1145/1835449.1835619} }