arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2003.04497cs.LGstat.ML
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基于张量的多路数据在线学习

Online Tensor-Based Learning for Multi-Way Data

The University of Sydney(悉尼大学)

Ali Anaissi, Basem Suleiman, Seid Miad Zandavi

摘要:

存储在张量$\mathcal{X} \in \mathbb{R} ^{I_1 \times \dots \times I_N} $中的多路数据的在线分析已经成为捕获底层结构和提取可用于学习预测模型的敏感特征的重要工具。然而,数据分布通常随着时间而演变,并且当前的预测模型在未来可能不具有足够的代表性。因此,在这种情况下,需要增量地更新基于张量的特征和模型系数。提出了一种新的基于张量的特征提取算法NeSGD,用于在线$CANDECOMP/PARAFAC$(CP)分解.根据NeSGD结果矩阵的新特征,触发新的准则用于在线预测模型的更新过程。使用实验室和现实生活中的结构数据集进行结构健康监测领域的实验评估表明,与现有的在线张量分析和模型学习相比,我们的方法提供了更准确的结果。结果表明,所提出的方法显着提高了分类出错率,能够同化的变化,随着时间的推移,积极的数据分布,并保持了较高的预测精度在所有的案例研究。

英文摘要:

The online analysis of multi-way data stored in a tensor $\mathcal{X} \in \mathbb{R} ^{I_1 \times \dots \times I_N} $ has become an essential tool for capturing the underlying structures and extracting the sensitive features which can be used to learn a predictive model. However, data distributions often evolve with time and a current predictive model may not be sufficiently representative in the future. Therefore, incrementally updating the tensor-based features and model coefficients are required in such situations. A new efficient tensor-based feature extraction, named NeSGD, is proposed for online $CANDECOMP/PARAFAC$ (CP) decomposition. According to the new features obtained from the resultant matrices of NeSGD, a new criteria is triggered for the updated process of the online predictive model. Experimental evaluation in the field of structural health monitoring using laboratory-based and real-life structural datasets show that our methods provide more accurate results compared with existing online tensor analysis and model learning. The results showed that the proposed methods significantly improved the classification error rates, were able to assimilate the changes in the positive data distribution over time, and maintained a high predictive accuracy in all case studies.

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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