Improved Pattern Learning for Bootstrapped Entity Extraction Sonal Gupta author Christopher Manning author 2014-06 text Proceedings of the Eighteenth Conference on Computational Natural Language Learning Roser Morante editor Scott Wen-tau Yih editor Association for Computational Linguistics Ann Arbor, Michigan conference publication gupta-manning-2014-improved 10.3115/v1/W14-1611 https://aclanthology.org/W14-1611/ 2014-06 98 108