Enhanced Graph-Learning Schemes Driven by Similar Distributions of Motifs
Enhanced Graph-Learning Schemes Driven by Similar Distributions of Motifs
复制标题
由相似的主题分布驱动的增强型图学习方案
DOI:
10.1109/tsp.2023.3303639
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发表时间:
2022
影响因子:
5.4
通讯作者:
Santiago Segarra
中科院分区:
文献类型:
--
作者:
A. Marques;Samuel Rey;T. Roddenberry;Santiago Segarra
This paper looks at the task of network topology inference, where the goal is to learn an unknown graph from nodal observations. One of the novelties of the approach put forth is the consideration of prior information about the density of motifs of the unknown graph to enhance the inference of classical Gaussian graphical models. Directly dealing with the density of motifs constitutes a challenging combinatorial task. However, we note that if two graphs have similar motif densities, one can show that the expected value of a polynomial applied to their empirical spectral distributions will be similar. Guided by this, we first assume that we observe a reference graph with a density of motifs similar to that of the sought graph, and then, we exploit this relation by incorporating a similarity constraint and a regularization term in the graph learning optimization problem. The (non-)convexity of the optimization problem is discussed, and a computationally efficient alternating majorization-minimization algorithm is designed. We assess the performance of the proposed method through exhaustive numerical experiments, where different constraints are considered and compared against popular alternatives on both synthetic and real-world datasets.
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影响因子:
2.3
作者:
Shafipour, Rasoul;Mateos, Gonzalo
通讯作者:
Mateos, Gonzalo
DOI:
10.1109/icassp43922.2022.9747524
发表时间:
2021-10
期刊:
ICASSP 2022 - 2022 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
影响因子:
--
作者:
Samuel Rey;Andrei Buciulea;Madeline Navarro;Santiago Segarra;A. Marques
通讯作者:
Samuel Rey;Andrei Buciulea;Madeline Navarro;Santiago Segarra;A. Marques
影响因子:
5.4
作者:
Roddenberry, T.M.;Gama, F.;Baraniuk, R.G.;and Segarra, S.
通讯作者:
and Segarra, S.
影响因子:
14.9
作者:
Mateos, Gonzalo;Segarra, Santiago;Ribeiro, Alejandro
通讯作者:
Ribeiro, Alejandro
影响因子:
3.900
作者:
Heba R. Shebl;Rehab A. Soliman;Omnia M. Abdallah
通讯作者:
Omnia M. Abdallah