01.07.2014
String Indexing for Patterns with Wildcards
Erschienen in: Theory of Computing Systems | Ausgabe 1/2014
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Abstract
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A linear space index with query time O(m+σ j loglogn+occ). This significantly improves the previously best known linear space index by Lam et al. (in Proc. 18th ISAAC, pp. 846–857, [2007]), which requires query time Θ(jn) in the worst case.
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An index with query time O(m+j+occ) using space \(O(\sigma^{k^{2}} n \log^{k} \log n)\), where k is the maximum number of wildcards allowed in the pattern. This is the first non-trivial bound with this query time.
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A time-space trade-off, generalizing the index by Cole et al. (in Proc. 36th STOC, pp. 91–100, [2004]).