39 citations · 87 across the 16 of their papers we have counts for
4 papers · 1 filter
Learning Multiplication-free Linear Transformations
Cristian Rusu
In this paper, we propose several dictionary learning algorithms for sparse representations that also impose specific structures on the learned dictionaries such that they are nume…
On learning with shift-invariant structures
Cristian Rusu
We describe new results and algorithms for two different, but related, problems which deal with circulant matrices: learning shift-invariant components from training data and calcu…
Approximate Eigenvalue Decompositions of Linear Transformations with a Few Householder Reflectors
Cristian Rusu
The ability to decompose a signal in an orthonormal basis (a set of orthogonal components, each normalized to have unit length) using a fast numerical procedure rests at the heart…
Algorithms for the Construction of Incoherent Frames Under Various Design Constraints
Cristian Rusu, Nuria Gonzalez-Prelcic, Robert W. Heath
Unit norm finite frames are generalizations of orthonormal bases with many applications in signal processing. An important property of a frame is its coherence, a measure of how cl…