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Opportunistic data structures for range queries

Author

Listed:
  • Chung Keung Poon

    (City University of Hong Kong)

  • Wai Keung Yiu

    (City University of Hong Kong)

Abstract

In this paper, we study the problem of supporting range sum queries on a compressed sequence of values. For a sequence of n k-bit integers, k ≤ O(log n), our data structures require asymptotically the same amount of storage as the compressed sequence if compressed using the Lempel-Ziv algorithm. The basic structure supports range sum queries in O(log n) time. With an increase by a constant factor in the storage complexity, the query time can be improved to O(log log n + k).

Suggested Citation

  • Chung Keung Poon & Wai Keung Yiu, 2006. "Opportunistic data structures for range queries," Journal of Combinatorial Optimization, Springer, vol. 11(2), pages 145-154, March.
    • Handle: RePEc:spr:jcomop:v:11:y:2006:i:2:d:10.1007_s10878-006-7122-0
    DOI: 10.1007/s10878-006-7122-0
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