消息重要性度量及其在大数据中少数子集检测中的应用
Message Importance Measure and Its Application to Minority Subset Detection in Big Data
摘要:
消息重要性度量(MIM)是描述大数据场景下消息重要性的重要指标。类似于Shannon熵和Renyi熵,MIM需要表征随机过程的不确定性和一些相关的统计特征。此外,MIM还需要突出那些发生概率相对较小的事件的重要性,因此特别适用于大数据。本文首先从信息论的角度定义了一个参数MIM测度,然后研究了它的性质。我们还提出了一个参数选择原则,提供了答案的少数子集检测问题在大数据的统计处理。
英文摘要:
Message importance measure (MIM) is an important index to describe the message importance in the scenario of big data. Similar to the Shannon Entropy and Renyi Entropy, MIM is required to characterize the uncertainty of a random process and some related statistical characteristics. Moreover, MIM also need to highlight the importance of those events with relatively small occurring probabilities, thereby is especially applicable to big data. In this paper, we first define a parametric MIM measure from the viewpoint of information theory and then investigate its properties. We also present a parameter selection principle that provides answers to the minority subsets detection problem in the statistical processing of big data.
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