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arXiv 1709.10280cs.ITmath.ITmath.STstat.TH
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非参数消息重要度量:大数据存储编码设计与传输规划

Non-parametric Message Important Measure: Storage Code Design and Transmission Planning for Big Data

Shanyun Liu, Rui She, Pingyi Fan, Khaled B. Letaief

摘要:

本文讨论了大数据的存储和传输,其中考虑到消息的重要性。与Shannon熵和Renyi熵类似,我们定义了非参数消息重要性测度(NMIM)作为大数据场景下消息重要性的度量,它可以表征随机事件的不确定性。实验结果表明,该模型能够充分描述大数据的两个关键特征:稀有事件发现和大事件分布。基于NMIM,我们首先提出了一种有效的数据存储压缩编码方式,然后讨论了几种典型信道模型下的信道传输。数值仿真结果表明,该策略在不损失消息重要性的前提下,占用较少的存储空间,且存在最大传输量的增长区和饱和区,有助于设计更好的实用通信系统。

英文摘要:

Storage and transmission in big data are discussed in this paper, where message importance is taken into account. Similar to Shannon Entropy and Renyi Entropy, we define non-parametric message important measure (NMIM) as a measure for the message importance in the scenario of big data, which can characterize the uncertainty of random events. It is proved that the proposed NMIM can sufficiently describe two key characters of big data: rare events finding and large diversities of events. Based on NMIM, we first propose an effective compressed encoding mode for data storage, and then discuss the channel transmission over some typical channel models. Numerical simulation results show that using our proposed strategy occupies less storage space without losing too much message importance, and there are growth region and saturation region for the maximum transmission, which contributes to designing of better practical communication system.

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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