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arXiv 1606.03055cs.ITmath.IT
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针对Lasso恢复优化quantization

Optimizing quantization for Lasso recovery

Xiaoyi Gu, Shenyinying Tu, Hao-Jun Michael Shi, Mindy Case, Deanna Needell, Yaniv Plan

摘要:

这封信的重点是量化压缩感知,假设Lasso用于信号估计。利用最近的工作,我们提供了一个框架来优化的量化函数,并表明,恢复的信号收敛到实际的信号在一个二次速率的量化水平的函数。我们发现,当观察的数量是高的,这种方法的量化给出了一个显着更好的恢复率比标准的最大的量化。我们支持我们的理论分析与数值模拟。

英文摘要:

This letter is focused on quantized Compressed Sensing, assuming that Lasso is used for signal estimation. Leveraging recent work, we provide a framework to optimize the quantization function and show that the recovered signal converges to the actual signal at a quadratic rate as a function of the quantization level. We show that when the number of observations is high, this method of quantization gives a significantly better recovery rate than standard Lloyd-Max quantization. We support our theoretical analysis with numerical simulations.

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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