Abstract
Partition of unity methods (PUMs) on graphs represent straightforward and remarkably adaptable auxiliary techniques for graph signal processing. By relying solely on the intrinsic graph structure, we propose the generation of a partition of unity through centrality measures and modularity. Subsequently, we integrate PUMs with a local graph basis function (GBF) approximation approach to achieve low-cost global interpolation schemes.
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Acknowledgments
The authors sincerely thank the reviewers for the careful reading and valuable comments on the paper. This research has been accomplished within the RITA “Research ITalian network on Approximation” and the UMI Group TAA“Approximation Theory and Applications”. This work has been supported by the INdAM–GNCS 2022 Project “Computational methods for kernel-based approximation and its applications”, code CUP\(\_\)E55F22000270001, and by the Spoke “FutureHPC & BigData” of the ICSC - National Research Center in"High-Performance Computing, Big Data and Quantum Computing", funded by European Union - NextGenerationEU. Moreover, the work has been supported by the Fondazione CRT, project 2022 “Modelli matematici e algoritmi predittivi di intelligenza artificiale per la mobilit\(\grave{\text {a}}\) sostenibile”.
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De Rossi, A., Lancellotti, S., Romaniello, F. (2025). Node-Binded Communities for Interpolation on Graphs. In: Sergeyev, Y.D., Kvasov, D.E., Astorino, A. (eds) Numerical Computations: Theory and Algorithms. NUMTA 2023. Lecture Notes in Computer Science, vol 14477. Springer, Cham. https://doi.org/10.1007/978-3-031-81244-6_20
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DOI: https://doi.org/10.1007/978-3-031-81244-6_20
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