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math.NA2018
Analysis of Adaptive Short-time Fourier Transform-based Synchrosqueezing Transform
Haiyan Cai, Qingtang Jiang, Lin Li +1
Recently the study of modeling a non-stationary signal as a superposition of amplitude and frequency-modulated Fourier-like oscillatory modes has been a very active research area.…
math.OC2018
Structured Sparsity Promoting Functions
Lixin Shen, Bruce W. Suter, Erin E. Tripp
Motivated by the minimax concave penalty based variable selection in high-dimensional linear regression, we introduce a simple scheme to construct structured semiconvex sparsity pr…