An Arabic Slot Grammar parser
Michael C. McCord, Violetta Cavalli-Sforza
ACL 2007
Usually n decimal digits are represented by 4n bits in computers. Actually, two BCD digits can be compressed optimally and reversibly into 7 bits, and three digits into 10 bits, by a very simple algorithm based on the fixed-length combination of two variable field-length encodings. In over half of the cases the compressed code results from the conventional BCD code by simple removal of redundant 0 bits. A long decimal message can be subdivided into three-digit blocks, and separately compressed; the result differs from the asymptotic minimum length by only 0.34 percent. The hardware requirement is small, and the mappings can be done manually. © 1975, ACM. All rights reserved.
Michael C. McCord, Violetta Cavalli-Sforza
ACL 2007
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Communications of the ACM
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INTERSPEECH - Eurospeech 2001