Applying Probabilistic Term Weighting to OCR Text in the Case of a Large Alphabetic Library Catalogue.

Elke Mittendorf, Peter Schäuble, Paraic Sheridan: Applying Probabilistic Term Weighting to OCR Text in the Case of a Large Alphabetic Library Catalogue. SIGIR 1995: 328-335

@inproceedings{DBLP:conf/sigir/MittendorfSS95,
  author    = {Elke Mittendorf and
               Peter Sch{\"a}uble and
               Paraic Sheridan},
  editor    = {Edward A. Fox and
               Peter Ingwersen and
               Raya Fidel},
  title     = {Applying Probabilistic Term Weighting to OCR Text in the Case
               of a Large Alphabetic Library Catalogue},
  booktitle = {SIGIR'95, Proceedings of the 18th Annual International ACM SIGIR
               Conference on Research and Development in Information Retrieval.
                Seattle, Washington, USA, July 9-13, 1995 (Special Issue of
               the SIGIR Forum)},
  publisher = {ACM Press},
  year      = {1995},
  isbn      = {0-89791-714-6},
  pages     = {328-335},
  ee        = {db/conf/sigir/MittendorfSS95.html},
  crossref  = {DBLP:conf/sigir/95},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

BibTeX

Abstract

We report on a probabilistic weighting approach to indexing the scanned images of very short documents. This fully automatic process copes with short and very noisy texts (67% word accuracy) derived from the images by Optical Character Recognition (OCR). The probabilistic term weighting approach is based on a theoretical proof explaining how the retrieval effectiveness is affected by recognition errors. We have evaluated our probabilistic weighting approach on a sample of index cards from an alphabetic library catalogue where, on the average, a card contains only 23 terms. We have demonstrated over 30% improvement in retrieval effectiveness over a conventional weighted retrieval method where the recognition errors are not taken into account. We also show how we can take advantage of the ordering information of the alphabetic library catalogue.

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Printed Edition

Edward A. Fox, Peter Ingwersen, Raya Fidel (Eds.): SIGIR'95, Proceedings of the 18th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval. Seattle, Washington, USA, July 9-13, 1995 (Special Issue of the SIGIR Forum). ACM Press 1995, ISBN 0-89791-714-6
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