Perfect hash functions for large dictionaries

  • Authors:
  • Amjad M. Daoud

  • Affiliations:
  • Tabuk University, Tabuk, Suadi Arabia

  • Venue:
  • Proceedings of the ACM first workshop on CyberInfrastructure: information management in eScience
  • Year:
  • 2007

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Abstract

We describe a new practical algorithm for finding perfect hash functions with no specification space at all, suitable for key sets ranging in size from small to very large. The method is able to find perfect hash functions for various sizes of key sets in linear time. The perfect hash functions produced are optimal in terms of time (perfect) and require at most computation of h1(k) and h2(k); two simple auxiliary pseudorandom functions.