NR‐grep: a fast and flexible pattern‐matching tool

@article{Navarro2001NRgrepAF,
  title={NR‐grep: a fast and flexible pattern‐matching tool},
  author={Gonzalo Navarro},
  journal={Software: Practice and Experience},
  year={2001},
  volume={31}
}
  • G. Navarro
  • Published 30 October 2001
  • Computer Science
  • Software: Practice and Experience
We present nrgrep (‘non‐deterministic reverse grep’), a new pattern‐matching tool designed for efficient search of complex patterns. Unlike previous tools of the grep family, such as agrep and Gnu grep, nrgrep is based on a single and uniform concept: the bit‐parallel simulation of a non‐deterministic suffix automaton. As a result, nrgrep can find from simple patterns to regular expressions, exactly or allowing errors in the matches, with an efficiency that degrades smoothly as the complexity… 
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121 Citations

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  • Computer Science
    2014 23rd International Conference on Parallel Architecture and Compilation (PACT)
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A new parallel algorithm for regular expression matching is developed and applied to the classical grep (global regular expression print) problem and can substantially outperform traditional grep implementations based on NFAs, DFAs or backtracking.
...

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