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arXiv cs/0508039cs.ITmath.IT
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Huffman码冗余度的紧界

Tight Bounds on the Redundancy of Huffman Codes

Soheil Mohajer, Payam Pakzad, Ali Kakhbod

摘要:

本文研究了哈夫曼码的冗余性。特别是,我们考虑的来源,其中的一个源符号的概率是已知的。我们证明了叶和杨关于这样的霍夫曼码的冗余上界的一个猜想,它产生一个紧的上界。在同样的假设下,我们也得到了一个严格的下界的冗余。我们进一步将本文介绍的方法应用于其他相关问题。它表明,其他几个先前已知的界限,不同的约束,立即从我们的结果。

英文摘要:

In this paper we study the redundancy of Huffman codes. In particular, we consider sources for which the probability of one of the source symbols is known. We prove a conjecture of Ye and Yeung regarding the upper bound on the redundancy of such Huffman codes, which yields in a tight upper bound. We also derive a tight lower bound for the redundancy under the same assumption. We further apply the method introduced in this paper to other related problems. It is shown that several other previously known bounds with different constraints follow immediately from our results.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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