Online Sentence Novelty Scoring for Topical Document Streams Sungjin Lee author 2015-09 text Proceedings of the 2015 Conference on Empirical Methods in Natural Language Processing Lluís Màrquez editor Chris Callison-Burch editor Jian Su editor Association for Computational Linguistics Lisbon, Portugal conference publication lee-2015-online 10.18653/v1/D15-1067 https://aclanthology.org/D15-1067/ 2015-09 567 572