DOSA: Dravidian Code-Mixed Offensive Span Identification Dataset Manikandan Ravikiran author Subbiah Annamalai author 2021-04 text Proceedings of the First Workshop on Speech and Language Technologies for Dravidian Languages Bharathi Raja Chakravarthi editor Ruba Priyadharshini editor Anand Kumar M editor Parameswari Krishnamurthy editor Elizabeth Sherly editor Association for Computational Linguistics Kyiv conference publication ravikiran-annamalai-2021-dosa https://aclanthology.org/2021.dravidianlangtech-1.2/ 2021-04 10 17