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arXiv 2601.04741cs.LGcs.AI
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多传感器数据流上的快速挖掘与动态时间到事件预测

Fast Mining and Dynamic Time-to-Event Prediction over Multi-sensor Data Streams

InfoTech, Toyota Motor Corporation(丰田汽车公司信息科技部门);SANKEN, Osaka University(大阪大学SANKEN)

Kota Nakamura, Koki Kawabata, Yasuko Matsubara, Yasushi Sakurai

AI总结:

TimeCast通过动态预测框架实现多传感器数据流中故障时间的高效预测,具备动态适应、实用性和可扩展性,提升预测精度并减少计算时间。

摘要:

给定从机器获取的实时传感器数据流,我们如何持续预测机器故障何时会发生?本工作旨在通过分析多传感器数据流来持续预测未来事件的时间。现实世界的数据流的一个关键特征是其动态性,即底层模式随时间演变。为了解决这个问题,我们提出了TimeCast,一个动态预测框架,旨在适应这些变化并提供准确的实时事件时间预测。我们提出的方法具有以下特性:(a)动态:它识别出时间演变的模式(即阶段)并为每个阶段学习个体模型,使我们能够根据模式变化进行自适应预测;(b)实用:它找到有意义的阶段,捕捉多个传感器之间随时间变化的相互依赖关系并提高预测性能;(c)可扩展:我们的算法与输入规模线性扩展,并在数据流上启用在线模型更新。在真实数据集上的广泛实验表明,TimeCast在预测准确性方面优于最先进的方法,同时在数据流中发现动态变化,且计算时间大幅减少。

英文摘要:

Given real-time sensor data streams obtained from machines, how can we continuously predict when a machine failure will occur? This work aims to continuously forecast the timing of future events by analyzing multi-sensor data streams. A key characteristic of real-world data streams is their dynamic nature, where the underlying patterns evolve over time. To address this, we present TimeCast, a dynamic prediction framework designed to adapt to these changes and provide accurate, real-time predictions of future event time. Our proposed method has the following properties: (a) Dynamic: it identifies the distinct time-evolving patterns (i.e., stages) and learns individual models for each, enabling us to make adaptive predictions based on pattern shifts. (b) Practical: it finds meaningful stages that capture time-varying interdependencies between multiple sensors and improve prediction performance; (c) Scalable: our algorithm scales linearly with the input size and enables online model updates on data streams. Extensive experiments on real datasets demonstrate that TimeCast provides higher prediction accuracy than state-of-the-art methods while finding dynamic changes in data streams with a great reduction in computational time.

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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