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arXiv 2205.09703cs.LGcs.DCcs.PFcs.SYeess.SYstat.AP
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提取动态信息以改进时间序列建模:一个科学工作流的案例研究

Extract Dynamic Information To Improve Time Series Modeling: a Case Study with Scientific Workflow

Lawrence Berkeley National Laboratory(劳伦斯伯克利国家实验室);Stanford University(斯坦福大学);SLAC National Accelerator Laboratory(SLAC国家加速器实验室)

Jeeyung Kim, Mengtian Jin, Youkow Homma, Alex Sim, Wilko Kroeger, Kesheng Wu

摘要:

在对时间序列数据建模时,经常需要对已有的数据记录进行扩充以提高建模精度。在这项工作中,我们描述了一些技术来提取动态信息的当前状态的一个大型的科学工作流程,这可以推广到其他类型的应用程序。要建模的特定任务是将文件从实验设施传输到数据中心所需的时间。我们的方法的关键思想是找到最近的过去的数据传输事件,在某些方面匹配的当前事件。测试表明,我们可以识别最近的事件匹配一些记录的属性,并减少约12%的预测误差相比,只有静态特征的类似模型。我们还探索了一种特定于应用程序的技术来提取有关数据生产过程的信息,并能够将平均预测误差降低44%。

英文摘要:

In modeling time series data, we often need to augment the existing data records to increase the modeling accuracy. In this work, we describe a number of techniques to extract dynamic information about the current state of a large scientific workflow, which could be generalized to other types of applications. The specific task to be modeled is the time needed for transferring a file from an experimental facility to a data center. The key idea of our approach is to find recent past data transfer events that match the current event in some ways. Tests showed that we could identify recent events matching some recorded properties and reduce the prediction error by about 12% compared to the similar models with only static features. We additionally explored an application specific technique to extract information about the data production process, and was able to reduce the average prediction error by 44%.

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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