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arXiv 1802.07458cs.ITmath.IT
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逐次加细问题率失真域的非渐近界和一般公式

Non-Asymptotic Bounds and a General Formula for the Rate-Distortion Region of the Successive Refinement Problem

Tetsunao Matsuta, Tomohiko Uyematsu

摘要:

在连续细化问题中,从信息源发射的固定长度序列由两个编码器编码成两个码字,以便给出序列的两个重构。两个重构中的一个重构由两个码字中的一个码字获得,而另一个重构由所有两个码字获得。对于这个编码问题,我们给出了非渐近的内界和外界对两个编码器的码字的数量,使得每个概率的失真超过一个给定的失真水平小于一个给定的概率水平。我们还给出了一般信源的率失真区域的一般公式,其中率失真区域是两个编码器的率对的集合,使得每个可能的失真的最大值小于给定的失真水平。

英文摘要:

In the successive refinement problem, a fixed-length sequence emitted from an information source is encoded into two codewords by two encoders in order to give two reconstructions of the sequence. One of two reconstructions is obtained by one of two codewords, and the other reconstruction is obtained by all two codewords. For this coding problem, we give non-asymptotic inner and outer bounds on pairs of numbers of codewords of two encoders such that each probability that a distortion exceeds a given distortion level is less than a given probability level. We also give a general formula for the rate-distortion region for general sources, where the rate-distortion region is the set of rate pairs of two encoders such that each maximum value of possible distortions is less than a given distortion level.

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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