Hierarchical Discourse Parsing Based on Similarity Metrics Ravikiran Vadlapudi author Poornima Malepati author Suman Yelati author 2009-09 text Proceedings of the Student Research Workshop Irina Temnikova editor Ivelina Nikolova editor Natalia Konstantinova editor Association for Computational Linguistics Borovets, Bulgaria conference publication vadlapudi-etal-2009-hierarchical https://aclanthology.org/R09-2016/ 2009-09 89 93