A Simple Word Trigger Method for Social Tag Suggestion Zhiyuan Liu author Xinxiong Chen author Maosong Sun 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 liu-etal-2011-simple https://aclanthology.org/D11-1146/ 2011-07 1577 1588