Translation on Graphs: An Isometric Shift Operator
Benjamin Girault, Paulo Gonçalvés, Éric Fleury · IEEE Signal Processing Letters · 2015
In this letter, we propose a new shift operator for graph signals, enforcing that our operator is isometric. Doing so, we ensure that as many properties of the time shift as possible get carried over. Finally, we show that our operator behaves reasonably for graph signals.