Definition: A positive (negative) pattern element is a "partial wild card" presented as a subset of the alphabet Σ, with the symbols in the subset specifying which symbols of Σ are matched (mismatched) by the pattern element.
Note: From Algorithms and Theory of Computation Handbook, page 13-17, Copyright © 1999 by CRC Press LLC. Appearing in the Dictionary of Computer Science, Engineering and Technology, Copyright © 2000 CRC Press LLC.
If you have suggestions, corrections, or comments, please get in touch with Paul E. Black.
Entry modified 17 December 2004.
HTML page formatted Fri Mar 25 16:20:34 2011.
Cite this as:
Algorithms and Theory of Computation Handbook, CRC Press LLC, 1999, "pattern element", in Dictionary of Algorithms and Data Structures [online], Paul E. Black, ed., U.S. National Institute of Standards and Technology. 17 December 2004. (accessed TODAY) Available from: http://www.nist.gov/dads/HTML/patternelmnt.html