1 citations · 2 across the 15 of their papers we have counts for
3 papers · 1 filter
Time-Varying Spiky Wave-Shape Functions for Non-Stationary Signal Decomposition
Marcelo A. Colominas, Hau-Tieng Wu
We propose a novel framework for decomposing nonstationary spiky signals. Unlike classical adaptive non-harmonic models, which represent signals as amplitude- and frequency-modulat…
Time-Frequency Filtering Meets Graph Clustering
Marcelo A. Colominas, Stefan Steinerberger, Hau-Tieng Wu
We show that the problem of identifying different signal components from a time-frequency representation can be equivalently phrased as a graph clustering problem: given a graph $G…
Enhancing Missing Data Imputation of Non-stationary Signals with Harmonic Decomposition
Joaquin Ruiz, Hau-tieng Wu, Marcelo A. Colominas
Dealing with time series with missing values, including those afflicted by low quality or over-saturation, presents a significant signal processing challenge. The task of recoverin…