13 citations · 13 across the 2 of their papers we have counts for
3 papers
The Trimmed Lasso: Sparsity and Robustness
Dimitris Bertsimas, Martin S. Copenhaver, Rahul Mazumder
Nonconvex penalty methods for sparse modeling in linear regression have been a topic of fervent interest in recent years. Herein, we study a family of nonconvex penalty functions t…
Maximum Robustness and Surgery of Frames in finite dimensions
Martin S. Copenhaver, Yeon Hyang Kim, Cortney Logan +3
We consider frames in a finite-dimensional Hilbert space Hn where frames are exactly the spanning sets of the vector space. We present a method to determine the maximum robustness…
Diagram vectors and Tight Frame Scaling in Finite Dimensions
Martin S. Copenhaver, Yeon Hyang Kim, Cortney Logan +4
We consider frames in a finite-dimensional Hilbert space Hn where frames are exactly the spanning sets of the vector space. The diagram vector of a vector in R2 was previously defi…