Deterministic Regular Expressions in Linear Time
Summary: Linear-time O(|e|) algorithm to test whether a regular expression e is deterministic, improving the prior O(σ|e|) Glushkov-based bound via a novel structural decomposition of e's parse tree. Combined matching in O(|e|+|w|) for star-free, bounded-occurrence, and bounded plus-depth deterministic REs, and O(|e|+|w| log log |e|) for arbitrary deterministic REs. (summarized by gpt-5-mini on Feb 09 2026)
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Authors
- 1. Benoît Groz
- 2. Sebastian Maneth
- 3. Sławek Staworko
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| 1,732 | Validating Streaming XML Documents | 2002 | PODS | 9.9704253e-05 |
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