Approximating LZ77 in Small Space

March 09, 2015 Β· Declared Dead Β· πŸ› arXiv.org

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Authors Travis Gagie arXiv ID 1503.02416 Category cs.DS: Data Structures & Algorithms Citations 3 Venue arXiv.org Last Checked 4 months ago
Abstract
Given a positive \(Ξ΅\leq 1\) and read-only access to a string \(S [1..n]\) whose LZ77 parse consists of $z$ phrases, with high probability we can build an LZ77-like parse of $S$ that consists of $\Oh{z / Ξ΅}$ phrases using $\Oh{n^{1 + Ξ΅}}$ time, $\Oh{n^{1 + Ξ΅} / B}$ I/Os (where $B$ is the size of a disk block) and $\Oh{z / Ξ΅}$ space.
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