I/O-Space Trade-Offs

  • Authors:
  • Lars Arge

  • Affiliations:
  • -

  • Venue:
  • SWAT '00 Proceedings of the 7th Scandinavian Workshop on Algorithm Theory
  • Year:
  • 2000

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Abstract

We define external memory (or I/O) models which capture space complexity and develop a general technique for deriving I/O-space trade-offs in these models from internal memory model time-space tradeoffs. Using this technique we show strong I/O-space product lower bounds for Sorting and Element Distinctness. We also develop new space efficient external memory Sorting algorithms.