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Estimating Structural Missing Values Via Low-Tubal-Rank Tensor Completion

机译:通过低管位张量完成估算结构缺失值

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The recently proposed Tensor Nuclear Norm (TNN) minimization has been widely used for tensor completion. However, previous works didn’t consider the structural difference between the observed data and missing data, which widely exists in many applications. In this paper, we propose to incorporate a constraint item on the missing values into low-tubal-rank tensor completion to promote the structural hypothesis of the missing values such as sparsity. Theoretically, the proposed model has lower recovery error than classical model, and the target tensor can be recovered exactly with overwhelming probability provided low-tubal-rankness on whole area and sparsity on missing area. Algorithmically, an efficient algorithm by Alternating Direction Method of Multiplier (ADMM) is presented. Extensive experiments on both synthetic and real-world data demonstrate its superiority compared with several state-of-the-art methods.
机译:最近提出的张量核规范(TNN)最小化已广泛用于张量完成。但是,以前的工作并未考虑观察到的数据与丢失的数据之间的结构差异,这种差异在许多应用中都存在。在本文中,我们建议将对缺失值的约束项合并到低管形张量完成中,以促进缺失值(例如稀疏度)的结构假设。从理论上讲,所提出的模型具有比经典模型低的恢复误差,并且目标张量可以以压倒性的概率被精确地恢复,前提是整个区域的管状度低,而缺失区域的稀疏度。在算法上,提出了一种通过乘数交替方向法(ADMM)的有效算法。在合成数据和实际数据上进行的大量实验表明,与几种最新方法相比,它具有优越性。

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