Search Results for author: Rasoul Shafipour

Found 6 papers, 1 papers with code

Non-Local Feature Aggregation on Graphs via Latent Fixed Data Structures

no code implementations16 Aug 2021 Mostafa Rahmani, Rasoul Shafipour, Ping Li

The proposed approach is used to design several novel global feature aggregation methods based on the choice of the LFDS.

Online Topology Inference from Streaming Stationary Graph Signals with Partial Connectivity Information

no code implementations7 Jul 2020 Rasoul Shafipour, Gonzalo Mateos

This motivates formulating the topology inference task as an inverse problem, whereby one searches for a sparse GSO that is structurally admissible and approximately commutes with the observations' empirical covariance matrix.

Graph Learning Link Prediction

Towards Accelerated Greedy Sampling and Reconstruction of Bandlimited Graph Signals

no code implementations19 Jul 2018 Abolfazl Hashemi, Rasoul Shafipour, Haris Vikalo, Gonzalo Mateos

Then, we consider the Bayesian scenario where we formulate the sampling task as the problem of maximizing a monotone weak submodular function, and propose a randomized-greedy algorithm to find a sub-optimal subset of informative nodes.

Sampling and Reconstruction of Graph Signals via Weak Submodularity and Semidefinite Relaxation

no code implementations31 Oct 2017 Abolfazl Hashemi, Rasoul Shafipour, Haris Vikalo, Gonzalo Mateos

We study the problem of sampling a bandlimited graph signal in the presence of noise, where the objective is to select a node subset of prescribed cardinality that minimizes the signal reconstruction mean squared error (MSE).

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