Multi-index hashing for information retrieval

  • Authors:
  • D. Greene;M. Parnas;F. Yao

  • Affiliations:
  • -;-;-

  • Venue:
  • SFCS '94 Proceedings of the 35th Annual Symposium on Foundations of Computer Science
  • Year:
  • 1994

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Abstract

We describe a technique for building hash indices for a large dictionary of strings. This technique permits robust retrieval of strings from the dictionary even when the query pattern has a significant number of errors. This technique is closely related to the classical Turan problem for hypergraphs. We propose a general method of multi-index construction by generalizing certain Turan hypergraphs. We also develop an accompanying theory for analyzing such hashing schemes. The resulting algorithms have been implemented and can be applied to a wide variety of recognition and retrieval problems.