Bootstrapped Named Entity Recognition for Product Attribute Extraction Duangmanee Putthividhya author Junling Hu author 2011-07 text Proceedings of the 2011 Conference on Empirical Methods in Natural Language Processing Regina Barzilay editor Mark Johnson editor Association for Computational Linguistics Edinburgh, Scotland, UK. conference publication putthividhya-hu-2011-bootstrapped https://aclanthology.org/D11-1144/ 2011-07 1557 1567