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A Geometric Proximal Gradient Method for Sparse Least Squares Regression with Probabilistic Simplex Constraint.
Guiyun Xiao
Zheng-Jian Bai
Published in:
J. Sci. Comput. (2022)
Keyphrases
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gradient method
convergence rate
step size
optimization methods
negative matrix factorization
probabilistic model
generative model
convex formulation
sparse representation
image processing
nearest neighbor