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lexical analysis

   Also found in: Acronyms, Wikipedia 0.01 sec.
(programming)lexical analysis - (Or "linear analysis", "scanning") The first stage of processing a language. The stream of characters making up the source program or other input is read one at a time and grouped into lexemes (or "tokens") - word-like pieces such as keywords, identifiers, literals and punctutation. The lexemes are then passed to the parser.

["Compilers - Principles, Techniques and Tools", by Alfred V. Aho, Ravi Sethi and Jeffrey D. Ullman, pp. 4-5]


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This is achieved through a combination of manual and automated spam analysis that includes real-time black lists, Lexical analysis tests, textual content characteristics, header information, Bayesian probability techniques, Distributed Checksum Clearinghouse, centralised analysis and customer controlled lists.
Two main methods are used to analyse text: String Matching and Lexical Analysis String matching is the most basic type.
IMSafer uses lexical analysis, based on a growing set of rules, which have been shown by law enforcement to indicate inappropriate online relationships with children.
 
 
 
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