Higher Order Crossings Analysis of Signals Over Graphs
Panagiotis C. Petrantonakis · IEEE Signal Processing Letters · 2021
We propose the extension of the Higher Order Crossings (HOC) analysis concept for signals over graphs. The HOC over graphs sequence, ($HOC_g$), is defined and its efficacy on graph signal discrimination is investigated. Compared with state of the art graph signal discrimination algorithms, the proposed$HOC_g$combined with a Support Vector Machine classifier achieves fast and similar or better performance over five different benchmark data sets.