@inproceedings{li-etal-2020-r,
    title = "{R}-{VGAE}: Relational-variational Graph Autoencoder for Unsupervised Prerequisite Chain Learning",
    author = "Li, Irene  and
      Fabbri, Alexander  and
      Hingmire, Swapnil  and
      Radev, Dragomir",
    editor = "Scott, Donia  and
      Bel, Nuria  and
      Zong, Chengqing",
    booktitle = "Proceedings of the 28th International Conference on Computational Linguistics",
    month = dec,
    year = "2020",
    address = "Barcelona, Spain (Online)",
    publisher = "International Committee on Computational Linguistics",
    url = "https://preview.aclanthology.org/Add-Cong-Liu-Florida-Atlantic-University-author-id/2020.coling-main.99/",
    doi = "10.18653/v1/2020.coling-main.99",
    pages = "1147--1157"
}