1 citations · 1 across the 4 of their papers we have counts for
4 papers
A Dimension Reduction Scheme for the Computation of Optimal Unions of Subspaces
Akram Aldroubi, Magalí Anastasio, Carlos Cabrelli +1
Given a set of points \F in a high dimensional space, the problem of finding a union of subspaces \cup_i V_i\subset \R^N that best explains the data \F increases dramatically with…
Extra Invariance of Shift-Invariant Spaces on LCA Groups
Magalí Anastasio, Carlos Cabrelli, Victoria Paternostro
Let G be an LCA group and K a closed subgroup of G. A closed subspace of L^2(G) is called K-invariant if it is invariant under translations by elements of K. Assume now that H is a…
Invariance of a Shift-Invariant Space in Several Variables
Magalí Anastasio, Carlos Cabrelli, Victoria Paternostro
In this article we study invariance properties of shift-invariant spaces in higher dimensions. We state and prove several necessary and sufficient conditions for a shift-invariant…
Sampling in a Union of Frame Generated Subspaces
Magalí Anastasio, Carlos Cabrelli
A new paradigm in Sampling theory has been developed recently by Lu and Do. In this new approach the classical linear model is replaced by a non-linear, but structured model consis…