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arXiv 1807.04415stat.MLcs.LG
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基于分类树隐半马尔可夫模型的进程发现

Process Discovery using Classification Tree Hidden Semi-Markov Model

National Sun Yat-sen University(国立中山大学);University of Pittsburgh(匹兹堡大学)

Yihuang Kang, Vladimir Zadorozhny

摘要:

各种无处不在的信息系统被用于监视、交换和收集信息。这些系统正在生成大量的事件序列日志,这些日志可以帮助我们理解潜在的现象。通过分析这些日志,我们可以学习描述系统过程的过程模型,预测系统的发展,或者检查是否有预期的变化。在本文中,我们考虑了一种新的技术,这些事件序列的时间概率的方式建模。具体来说,我们提出了一个概率过程模型,结合隐半马尔可夫模型和分类树学习。我们的实验结果表明,所提出的方法可以回答一类问题-“什么是最频繁的系统动力学序列相关的一个给定序列的可观测事件?".例如,“在一系列医疗治疗中,在不同时间,与患者健康状况模式变化最相关的是什么?"

英文摘要:

Various and ubiquitous information systems are being used in monitoring, exchanging, and collecting information. These systems are generating massive amount of event sequence logs that may help us understand underlying phenomenon. By analyzing these logs, we can learn process models that describe system procedures, predict the development of the system, or check whether the changes are expected. In this paper, we consider a novel technique that models these sequences of events in temporal-probabilistic manners. Specifically, we propose a probabilistic process model that combines hidden semi-Markov model and classification trees learning. Our experimental result shows that the proposed approach can answer a kind of question-"what are the most frequent sequence of system dynamics relevant to a given sequence of observable events?". For example, "Given a series of medical treatments, what are the most relevant patients' health condition pattern changes at different times?"

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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