The Rate-Distortion Function for Successive Refinement of Abstract Sources

被引:0
|
作者
Kostina, Victoria [1 ]
Tuncel, Ertem [2 ]
机构
[1] CALTECH, Pasadena, CA 91125 USA
[2] Univ Calif Riverside, Riverside, CA 92521 USA
基金
美国国家科学基金会;
关键词
Successive refinement; rate-distortion theory; single-shot analysis; d-tilted information; converse; INFORMATION; COMPUTATION;
D O I
暂无
中图分类号
TP301 [理论、方法];
学科分类号
081202 ;
摘要
In successive refinement of information, the decoder refines its representation of the source progressively as it receives more encoded bits. The rate-distortion region of successive refinement describes the minimum rates required to attain the target distortions at each decoding stage. In this paper, we derive a parametric characterization of the rate-distortion region for successive refinement of abstract sources. Our characterization extends Csiszar's result [1] to successive refinement, and generalizes a result by Tuncel and Rose [2], applicable for finite alphabet sources, to abstract sources. The new characterization leads to a family of outer bounds to the rate-distortion region. It also enables new nonasymptotic converse bounds.
引用
收藏
页码:1923 / 1927
页数:5
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