SemEval 2015, Task 7: Diachronic Text Evaluation Octavian Popescu author Carlo Strapparava author 2015-06 text Proceedings of the 9th International Workshop on Semantic Evaluation (SemEval 2015) Preslav Nakov editor Torsten Zesch editor Daniel Cer editor David Jurgens editor Association for Computational Linguistics Denver, Colorado conference publication popescu-strapparava-2015-semeval 10.18653/v1/S15-2147 https://aclanthology.org/S15-2147/ 2015-06 870 878