Enforcing Topic Diversity in a Document Recommender for Conversations Maryam Habibi author Andrei Popescu-Belis 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 habibi-popescu-belis-2014-enforcing https://aclanthology.org/C14-1056/ 2014-08 588 599