TY - CONF T1 - Active Learning by Acquiring Contrastive Examples JO - Proceedings of the 2021 Conference on Empirical Methods in Natural Language Processing PY - 2021/01/01 AU - Margatina K AU - Vernikos G AU - Barrault L AU - Aletras N ED - DO - DOI: 10.18653/v1/2021.emnlp-main.51 PB - Association for Computational Linguistics Y2 - 2024/12/23 ER -