@inproceedings{margatina-etal-2021-active,
    title = "Active Learning by Acquiring Contrastive Examples",
    author = {Margatina, Katerina  and
      Vernikos, Giorgos  and
      Barrault, Lo{\"i}c  and
      Aletras, Nikolaos},
    editor = "Moens, Marie-Francine  and
      Huang, Xuanjing  and
      Specia, Lucia  and
      Yih, Scott Wen-tau",
    booktitle = "Proceedings of the 2021 Conference on Empirical Methods in Natural Language Processing",
    month = nov,
    year = "2021",
    address = "Online and Punta Cana, Dominican Republic",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/fix-sig-urls/2021.emnlp-main.51/",
    doi = "10.18653/v1/2021.emnlp-main.51",
    pages = "650--663"
}