These should be simple implementations. • Dense vector • Dense matrix • Diagonal matrix • Sparse matrix (two versions) Each class should have the following: • Constructor, destructor, copy functions • ...

Mathematics Magazine presents articles and notes on undergraduate mathematical topics in a lively expository style that appeals to students and faculty throughout the undergraduate years. The journal ...

Abstract: Group Lasso is an efficient regularized least-square regression algorithm, and is now being used as a computationally feasible method to select grouped variables. In this paper, we address ...

Abstract Let A be an n × n Hermitian matrix and A = UΛUH be its spectral decomposition, where U is a unitary matrix of order n and Λ is a diagonal matrix. In this note we present the perturbation ...

Download PDF More Formats on IMF eLibrary Order a Print Copy Create Citation This paper proposes a novel shrinkage estimator for high-dimensional covariance matrices by extending the Oracle ...

Abstract: The measurement matrix is one of the keys of the compressed sensing. However, the existing measurement matrices face the two main problems of the difficult hardware implementation and the ...