For-All Sparse Recovery in Near-Optimal Time
For-All Sparse Recovery in Near-Optimal Time
An approximate sparse recovery system in ℓ 1 norm consists of parameters k , ϵ, N ; an m -by- N measurement Φ; and a recovery algorithm R . Given a vector, x , the system approximates x by xˆ = R (Φ x ), which must satisfy ‖ xˆ- …