SGRiT: Non-Negative Matrix Factorization via Subspace Graph Regularization and Riemannian-Based Trust Region Algorithm

Non-negative Matrix Factorization (NMF) has gained popularity due to its effectiveness in clustering and feature selection tasks. It is particularly valuable for managing high-dimensional data by reducing dimensionality and providing meaningful semantic representations. However, traditional NMF meth...

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Vydáno v:Machine learning and knowledge extraction Ročník 7; číslo 1; s. 25
Hlavní autoři: Nokhodchian, Mohsen, Moattar, Mohammad Hossein, Jalali, Mehrdad
Médium: Journal Article
Jazyk:angličtina
Vydáno: Basel MDPI AG 01.03.2025
Témata:
Algorithms
Analysis
Clustering
Comparative analysis
Data compression
Datasets
Decomposition
dimension reduction
Euclidean space
Factorization
Geometry
Machine learning
Manifolds (mathematics)
Mathematical optimization
Matrix decomposition
Methods
Non-negative Matrix Factorization
Optimization
Optimization techniques
Outliers (statistics)
Regularization
Representations
Riemannian manifolds
Sparsity
Stiefel manifold
subspace graph regularization
Subspaces
Germany
Iran
ISSN:2504-4990, 2504-4990
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Shrnutí:Non-negative Matrix Factorization (NMF) has gained popularity due to its effectiveness in clustering and feature selection tasks. It is particularly valuable for managing high-dimensional data by reducing dimensionality and providing meaningful semantic representations. However, traditional NMF methods may encounter challenges when dealing with noisy data, outliers, or when the underlying manifold structure of the data is overlooked. This paper introduces an innovative approach called SGRiT, which employs Stiefel manifold optimization to enhance the extraction of latent features. These learned features have been shown to be highly informative for clustering tasks. The method leverages a spectral decomposition criterion to obtain a low-dimensional embedding that captures the intrinsic geometric structure of the data. Additionally, this paper presents a solution for addressing the Stiefel manifold problem and utilizes a Riemannian-based trust region algorithm to optimize the loss function. The outcome of this optimization process is a new representation of the data in a transformed space, which can subsequently serve as input for the NMF algorithm. Furthermore, this paper incorporates a novel subspace graph regularization term that considers high-order geometric information and introduces a sparsity term for the factor matrices. These enhancements significantly improve the discrimination capabilities of the learning process. This paper conducts an impartial analysis of several essential NMF algorithms. To demonstrate that the proposed approach consistently outperforms other benchmark algorithms, four clustering evaluation indices are employed.
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ISSN:2504-4990
2504-4990
DOI:10.3390/make7010025