Computer Software
Print ISSN : 0289-6540
Text Compression Using Abstract Numeration System on a Regular Language
Ryoma SIN'YA
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JOURNALS OPEN ACCESS

2013 Volume 30 Issue 3 Pages 3_163-3_179

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Abstract

An abstract numeration system (ANS) is a numeration system that provides a one-to-one correspondence between the natural numbers and a regular language. In this paper, we define an ANS-based compression as an extension of this correspondence. In addition, we show the following results: (1) an average compression ratio is computable from a language, (2) an ANS-based compression runs in sublinear time with respect to the length of the input string, and (3) an ANS-based compression can be extended to block-based compression using a factorial language.

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© 2013 Japan Society for Software Science and Technology
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