Document Classification, Indexing and Abstracting May be Inherently Difficult Problems.

@inproceedings{DBLP:conf/sigir/Fraenkel81,
  author    = {Aviezri S. Fraenkel},
  editor    = {Carolyn J. Crouch},
  title     = {Document Classification, Indexing and Abstracting May be Inherently
               Difficult Problems},
  booktitle = {Theoretical Issues in Information Retrieval, Proceedings of the
               Fourth International Conference on Information Storage and Retrieval,
                Oakland, California, USA, May 31 - June 2, 1981},
  publisher = {ACM},
  year      = {1981},
  isbn      = {0-89791-052-4},
  pages     = {77-82},
  ee        = {db/conf/sigir/Fraenkel81.html},
  crossref  = {DBLP:conf/sigir/81},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

Abstract

Copyright © 1981 by the ACM, Inc., used by permission. Permission to make digital or hard copies is granted provided that copies are not made or distributed for profit or direct commercial advantage, and that copies show this notice on the first page or initial screen of a display along with the full citation.

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