@inproceedings{davidov-rappoport-2006-efficient, title = "Efficient Unsupervised Discovery of Word Categories Using Symmetric Patterns and High Frequency Words", author = "Davidov, Dmitry and Rappoport, Ari", editor = "Calzolari, Nicoletta and Cardie, Claire and Isabelle, Pierre", booktitle = "Proceedings of the 21st International Conference on Computational Linguistics and 44th Annual Meeting of the Association for Computational Linguistics", month = jul, year = "2006", address = "Sydney, Australia", publisher = "Association for Computational Linguistics", url = "https://preview.aclanthology.org/fix-sig-urls/P06-1038/", doi = "10.3115/1220175.1220213", pages = "297--304" }