Optimal Cache-Aware Suffix Selection

نویسندگان

  • Gianni Franceschini
  • Roberto Grossi
  • S. Muthukrishnan
چکیده

Given string S[1..N ] and integer k, the suffix selection problem is to determine the kth lexicographically smallest amongst the suffixes S[i . . . N ], 1 ≤ i ≤ N . We study the suffix selection problem in the cache-aware model that captures two-level memory inherent in computing systems, for a cache of limited size M and block size B. The complexity of interest is the number of block transfers. We present an optimal suffix selection algorithm in the cache-aware model, requiring Θ (N/B) block transfers, for any string S over an unbounded alphabet (where characters can only be compared), under the common tallcache assumption (i.e. M = Ω `

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تاریخ انتشار 2009