A modified gamma process for RUL prediction based on data with time-varying heavy-tailed distribution

IF 8.1 1区 计算机科学 0 COMPUTER SCIENCE, INFORMATION SYSTEMS Information Sciences Pub Date : 2024-10-31 DOI:10.1016/j.ins.2024.121603
Daniel Kuzio , Radosław Zimroz , Agnieszka Wyłomańska
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Abstract

Predicting remaining useful life (RUL) plays a critical role in condition-based maintenance (CBM). However, this task remains challenging as the collected data often has time-varying, non-homogenous properties (trend, variance) and exhibits non-Gaussian distributions. These aspects pose significant challenges to the classical approaches. To address these issues, we propose a modification of the gamma process (suitable for non-Gaussian data) to predict RUL for the degradation process with time-varying characteristics. Specifically, we use the Gompertz cumulative hazard function instead of the linear function used in the classical approach. The modified gamma process aims to outperform the classical one and other variants already used by exploiting its probabilistic nature to effectively manage the uncertainty in the degradation curve. In order to evaluate the effectiveness of the proposed approach, extensive experiments are performed on simulated data with both Gaussian and non-Gaussian distributions. In addition, the performance of the model is validated in real-world scenarios using two benchmark datasets. The results consistently demonstrate the effectiveness of the proposed approach for both simulated and real datasets.
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基于时变重尾分布数据的 RUL 预测修正伽马过程
预测剩余使用寿命(RUL)在基于状态的维护(CBM)中起着至关重要的作用。然而,由于收集到的数据通常具有时变性、非同质性(趋势、方差)并呈现非高斯分布,因此这项任务仍然充满挑战。这些方面给传统方法带来了巨大挑战。为了解决这些问题,我们提出了一种伽马过程的改进方法(适用于非高斯数据),用于预测具有时变特性的降解过程的 RUL。具体来说,我们使用 Gompertz 累积危险函数,而不是经典方法中使用的线性函数。改进后的伽马过程利用其概率性质,有效管理退化曲线中的不确定性,旨在超越经典方法和其他已使用的变体。为了评估所提出方法的有效性,我们在高斯和非高斯分布的模拟数据上进行了大量实验。此外,还使用两个基准数据集在实际场景中验证了模型的性能。结果一致证明了所提出的方法在模拟数据集和真实数据集上的有效性。
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来源期刊
Information Sciences
Information Sciences 工程技术-计算机:信息系统
CiteScore
14.00
自引率
17.30%
发文量
1322
审稿时长
10.4 months
期刊介绍: Informatics and Computer Science Intelligent Systems Applications is an esteemed international journal that focuses on publishing original and creative research findings in the field of information sciences. We also feature a limited number of timely tutorial and surveying contributions. Our journal aims to cater to a diverse audience, including researchers, developers, managers, strategic planners, graduate students, and anyone interested in staying up-to-date with cutting-edge research in information science, knowledge engineering, and intelligent systems. While readers are expected to share a common interest in information science, they come from varying backgrounds such as engineering, mathematics, statistics, physics, computer science, cell biology, molecular biology, management science, cognitive science, neurobiology, behavioral sciences, and biochemistry.
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