Text Chunking using Regularized Winnow Tong Zhang author Fred Damerau author David Johnson author 2001-07 text Proceedings of the 39th Annual Meeting of the Association for Computational Linguistics Association for Computational Linguistics Toulouse, France conference publication zhang-etal-2001-text 10.3115/1073012.1073081 https://aclanthology.org/P01-1069/ 2001-07 539 546