Twitter Topic Summarization by Ranking Tweets using Social Influence and Content Quality Yajuan Duan author Zhumin Chen author Furu Wei author Ming Zhou author Heung-Yeung Shum author 2012-12 text Proceedings of COLING 2012 Martin Kay editor Christian Boitet editor The COLING 2012 Organizing Committee Mumbai, India conference publication duan-etal-2012-twitter https://aclanthology.org/C12-1047/ 2012-12 763 780