A constrained-dictionary version of LZ78 asymptotically achieves the finite-state compressibility with a distortion measure

J. Ziv
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引用次数: 3

Abstract

The unrestricted-dictionary type LZ78 universal data-compression algorithm (as well as the LZ77 and LZW versions) achieves asymptotically, as the block-length tends to infinity, the FS compressibility, namely the best compression-ratio that may be achieved by any Information-lossless(IL) block-to-variable finite-state(FS) algorithm, for any infinitely-long individual sequence.
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LZ78的约束字典版本渐近地实现了具有失真度量的有限状态可压缩性
无限制字典型LZ78通用数据压缩算法(以及LZ77和LZW版本)在块长度趋近于无穷大时,渐近地实现了FS可压缩性,即任何信息无损(IL)块到变量有限状态(FS)算法对于任何无限长的单个序列可能实现的最佳压缩比。
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