Compressed perfect embedded skip lists for quick inverted-index lookups

  • Authors:
  • Paolo Boldi;Sebastiano Vigna

  • Affiliations:
  • Dipartimento di Scienze dell'Informazione, Università degli Studi di Milano;Dipartimento di Scienze dell'Informazione, Università degli Studi di Milano

  • Venue:
  • SPIRE'05 Proceedings of the 12th international conference on String Processing and Information Retrieval
  • Year:
  • 2005

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Abstract

Large inverted indices are by now common in the construction of web-scale search engines. For faster access, inverted indices are indexed internally so that it is possible to skip quickly over unnecessary documents. To this purpose, we describe how to embed efficiently a compressed perfect skip list in an inverted list.