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Xiaojun Chen

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Jul 2026

Orthogonal Nonnegative Matrix Factorization via Minimization over the Null Space

Abstract. This paper gives a necessary and sufficient condition for a nonnegative matrix that has an orthogonal nonnegative matrix factorization (ONMF) via characterization of the null space. We propose an optimization model to minimize the Frobenius norm of the product of a given nonnegative matrix and a variable mat...

Xiaojun Chen, Wen Li, Qilun Luo · 2 citations

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