DeepPurple: Lexical, String and Affective Feature Fusion for Sentence-Level Semantic Similarity Estimation Nikolaos Malandrakis author Elias Iosif author Vassiliki Prokopi author Alexandros Potamianos author Shrikanth Narayanan author 2013-06 text Second Joint Conference on Lexical and Computational Semantics (*SEM), Volume 1: Proceedings of the Main Conference and the Shared Task: Semantic Textual Similarity Mona Diab editor Tim Baldwin editor Marco Baroni editor Association for Computational Linguistics Atlanta, Georgia, USA conference publication malandrakis-etal-2013-deeppurple https://aclanthology.org/S13-1014/ 2013-06 103 108