Order Preserving Minimal Perfect Hash Functions and Information Retrieval.

Edward A. Fox, Qi Fan Chen, Amjad M. Daoud, Lenwood S. Heath: Order Preserving Minimal Perfect Hash Functions and Information Retrieval. SIGIR 1990: 279-311

@inproceedings{DBLP:conf/sigir/FoxCDH90,
  author    = {Edward A. Fox and
               Qi Fan Chen and
               Amjad M. Daoud and
               Lenwood S. Heath},
  editor    = {Jean-Luc Vidick},
  title     = {Order Preserving Minimal Perfect Hash Functions and Information
               Retrieval},
  booktitle = {SIGIR'90, 13th International Conference on Research and Development
               in Information Retrieval, Brussels, Belgium, 5-7 September 1990,
               Proceedings},
  publisher = {ACM},
  year      = {1990},
  isbn      = {0-89791-408-2},
  pages     = {279-311},
  ee        = {db/conf/sigir/FoxCDH90.html},
  crossref  = {DBLP:conf/sigir/90},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

Abstract

Rapid access to information is essential for a wide variety of retrieval systems and applications. Hashing has long been used when the fastest possible direct search is desired, but is generally not appropriate when sequential or range searches are also required. This paper describes a hashing method, developed for collections that are relatively static, that supports both direct and sequential access. Indeed, the algorithm described gives hash functions that are optimal in terms of time and hash table space utilization, and that preserve any a priori ordering desired. Furthermore, the resulting order preserving minimal perfect hash functions (OPMPHFs) can be found using space and time that is on average linear in the number of keys involved.

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Jean-Luc Vidick (Ed.): SIGIR'90, 13th International Conference on Research and Development in Information Retrieval, Brussels, Belgium, 5-7 September 1990, Proceedings. ACM 1990, ISBN 0-89791-408-2
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