A hybrid approach to index maintenance in dynamic text retrieval systems

  • Authors:
  • Stefan Büttcher;Charles L. A. Clarke

  • Affiliations:
  • School of Computer Science, University of Waterloo, Canada;School of Computer Science, University of Waterloo, Canada

  • Venue:
  • ECIR'06 Proceedings of the 28th European conference on Advances in Information Retrieval
  • Year:
  • 2006

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Abstract

In-place and merge-based index maintenance are the two main competing strategies for on-line index construction in dynamic information retrieval systems based on inverted lists. Motivated by recent results for both strategies, we investigate possible combinations of in-place and merge-based index maintenance. We present a hybrid approach in which long posting lists are updated in-place, while short lists are updated using a merge strategy. Our experimental results show that this hybrid approach achieves better indexing performance than either method (in-place, merge-based) alone.