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Uni-orthogonal Nonnegative Tucker Decomposition for Supervised Image Classification

机译:单正交非负塔克分解在监督图像分类中的应用

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The Tucker model with orthogonality constraints (often referred to as the HOSVD) assumes decomposition of a multi-way array into a core tensor and orthogonal factor matrices corresponding to each mode. Nonnegative Tucker Decomposition (NTD) model imposes non-negativity constraints onto both core tensor and factor matrices. In this paper, we discuss a mixed version of the models, i.e. where one factor matrix is orthogonal and the remaining factor matrices are nonnegative. Moreover, the nonnegative factor matrices are updated with the modified Barzilai-Borwein gradient projection method that belongs to a class of quasi-Newton methods. The discussed model is efficiently applied to supervised classification of facial images, hand-written digits, and spectrograms of musical instrument sounds.
机译:具有正交性约束的Tucker模型(通常称为HOSVD)假定将多路阵列分解为核心张量和与每种模式相对应的正交因子矩阵。非负Tucker分解(NTD)模型对核心张量和因子矩阵都施加了非负约束。在本文中,我们讨论了模型的混合版本,即其中一个因子矩阵是正交的而其余因子矩阵是非负的。此外,用属于拟牛顿法一类的改进的Barzilai-Borwein梯度投影法更新了非负因子矩阵。所讨论的模型有效地应用于面部图像,手写数字和乐器声音的声谱图的监督分类。

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