The design of bandlimited graph signals that maximize energy in a subgraph as the graph equivalent of Slepians is used to generalize Laplacian embedding and graph clustering.
References:
- D. Van De Ville, R. Demesmaeker, M. G. Preti, “When Slepian Meets Fiedler: Putting a Focus on the Graph Spectrum“, IEEE Signal Processing Letters, 24(7):1001-1004, 2017.