New asymptotic bounds and improvements on the Lempel-Ziv data compression algorithm

New results, which follow from a data compression algorithm proposed by A. Lempel and J. Ziv (1977), are presented. The authors describe the original Lempel-Ziv algorithm, and present an improved Lempel-Ziv data compression algorithm. They state and prove some asymptotic bounds on the compression ra...

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Bibliographic Details
Published in:IEEE transactions on information theory Vol. 37; no. 3; pp. 721 - 729
Main Authors: Bender, P.E., Wolf, J.K.
Format: Journal Article
Language:English
Published: New York, NY IEEE 01.05.1991
Institute of Electrical and Electronics Engineers
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ISSN:0018-9448, 1557-9654
Online Access:Get full text
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Summary:New results, which follow from a data compression algorithm proposed by A. Lempel and J. Ziv (1977), are presented. The authors describe the original Lempel-Ziv algorithm, and present an improved Lempel-Ziv data compression algorithm. They state and prove some asymptotic bounds on the compression ratio that the improved algorithm achieves. For completeness, they describe the Lempel-Ziv-Welch data compression algorithm presented by T. A. Welch (1984). A software implementation for both the original and the improved Lempel-Ziv algorithms is given, and the algorithms are compared with each other as well as with the Lempel-Ziv-Welch algorithm.< >
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ISSN:0018-9448
1557-9654
DOI:10.1109/18.79942