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The Fractional Greedy Algorithm for Data Compression
by
József Bekesi
,
Gábor Galambos
,
Ulrich Pferschy
,
Gerhard J. Woeginger
BibTeX
@MISC{Bekesi_thefractional,
author = {József Bekesi and Gábor Galambos and Ulrich Pferschy and Gerhard J. Woeginger},
title = {The Fractional Greedy Algorithm for Data Compression},
year = {}
}
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Abstract
Text-compression problems are considered where substrings are substituted by code-- words according to a static dictionary such that the original text is encoded by a shorter code sequence. We introduce a new efficient on-line heuristic which locally maximizes the compaction ratio. The worst-case behaviour of this fractional greedy heuristic is investigated for several types of dictionaries.
