Query Difficulty, Robustness, and Selective Application of Query Expansion.

@inproceedings{amati-2004-query, author = {Giambattista Amati and Claudio Carpineto and Giovanni Romano}, editor = {Sharon McDonald and John Tait}, title = {{Query Difficulty, Robustness, and Selective Application of Query Expansion}}, booktitle = {{Advances in Information Retrieval, 26th European Conference on IR Research, ECIR 2004, Sunderland, UK, April 5-7, 2004, Proceedings}}, series = {Lecture Notes in Computer Science}, volume = {2997}, pages = {127--137}, publisher = {Springer}, year = {2004}, url = {https://doi.org/10.1007/978-3-540-24752-4_10}, doi = {https://doi.org/10.1007/978-3-540-24752-4_10} }