@inproceedings{lewis-1992-feature,
    title = "Feature Selection and Feature Extraction for Text Categorization",
    author = "Lewis, David D.",
    booktitle = "Speech and Natural Language: Proceedings of a Workshop Held at Harriman, New York, {F}ebruary 23-26, 1992",
    year = "1992",
    url = "https://preview.aclanthology.org/jlcl-multiple-ingestion/H92-1041/"
}