Single Document Keyphrase Extraction Using Sentence Clustering and Latent Dirichlet Allocation Claude Pasquier author 2010-07 text Proceedings of the 5th International Workshop on Semantic Evaluation Katrin Erk editor Carlo Strapparava editor Association for Computational Linguistics Uppsala, Sweden conference publication pasquier-2010-single https://aclanthology.org/S10-1032/ 2010-07 154 157