PAT-Trees with the Deletion Function as the Learning Device for Linguistic Patterns Keh-Jiann Chen author Wen Tsuei author Lee-Feng Chien author 1998-08 text 36th Annual Meeting of the Association for Computational Linguistics and 17th International Conference on Computational Linguistics, Volume 1 Association for Computational Linguistics Montreal, Quebec, Canada conference publication chen-etal-1998-pat-trees 10.3115/980845.980885 https://aclanthology.org/P98-1038/ 1998-08 244 250