@inproceedings{song-roth-2015-unsupervised,
    title = "Unsupervised Sparse Vector Densification for Short Text Similarity",
    author = "Song, Yangqiu  and
      Roth, Dan",
    editor = "Mihalcea, Rada  and
      Chai, Joyce  and
      Sarkar, Anoop",
    booktitle = "Proceedings of the 2015 Conference of the North {A}merican Chapter of the Association for Computational Linguistics: Human Language Technologies",
    month = may # "–" # jun,
    year = "2015",
    address = "Denver, Colorado",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/fix-sig-urls/N15-1138/",
    doi = "10.3115/v1/N15-1138",
    pages = "1275--1280"
}