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Qian-Qian Qi

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#machine learning Review Dec 2025

Nonnegative matrix factorizations and related compositional models: Equivalence, identifiability, and an application on the grain-size analysis of sediments

It is proved that the solution of LBA, EMA, LCA, PLSA is unique if and only if the solution of NMF is unique, which means existing uniqueness theorems for NMF directly apply to LBA, EMA, LCA, PLSA, and vice versa.

Qian-Qian Qi, P. V. D. van der Heijden, M. Prins · 3 citations