Method for transformation of regular expressions
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United States of America Patent
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Issued Date -
Apr 20, 2006
app pub date -
Aug 26, 2005
filing date -
Aug 26, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method and apparatus for transforming regular expressions into a less resource intensive representation is disclosed. The method and apparatus converts a collection of regular expressions into a multi-level representation in which the memory requirements of the lowest level representation is reduced when compared with a conventional finite state automaton representation. The method and apparatus converts a collection of regular expressions into a collection of segments and a higher level representation in a way that retains the semantics of the original set of regular expressions. This transformation is performed through the use of an intermediate form. The resulting representation and collection admit an implementation which avoids the potentially costly memory requirements of a traditional implementation of the original expressions.
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