@inproceedings{clark-weir-1999-iterative,
    title = "An Iterative Approach to Estimating Frequencies over a Semantic Hierarchy",
    author = "Clark, Stephen  and
      Weir, David",
    booktitle = "1999 Joint {SIGDAT} Conference on Empirical Methods in Natural Language Processing and Very Large Corpora",
    year = "1999",
    url = "https://preview.aclanthology.org/iwcs-25-ingestion/W99-0631/"
}