Empirical analysis of exploiting review helpfulness for extractive summarization of online reviews Wenting Xiong author Diane Litman author 2014-08 text Proceedings of COLING 2014, the 25th International Conference on Computational Linguistics: Technical Papers Junichi Tsujii editor Jan Hajic editor Dublin City University and Association for Computational Linguistics Dublin, Ireland conference publication xiong-litman-2014-empirical https://aclanthology.org/C14-1187/ 2014-08 1985 1995