Randomized CUR Decomposition
A  Matlab function implementing the CUR decomposition method described in this paper. [Download]
(CUR matrix decompositions for improved data analysis)

Deterministic CUR Decomposition
A  Matlab function implementing the CUR decomposition method described in this paper. [Download]
(A theory of pseudoskeleton approximations)

Nonnegative Double Singular Value Decomposition (NNDSVD)
A Matlab function implementing an initialization method for Nonnegative Matrix Factorization algorithms. [Download]
(SVD-based initialization: A head start on nonnegative matrix factorization [pdf])