Search Results for author: Alberto Natali

Found 7 papers, 1 papers with code

A Generalization of the Convolution Theorem and its Connections to Non-Stationarity and the Graph Frequency Domain

1 code implementation28 Dec 2023 Alberto Natali, Geert Leus

In this paper, we present a novel convolution theorem which encompasses the well known convolution theorem in (graph) signal processing as well as the one related to time-varying filters.

Blind Polynomial Regression

no code implementations21 Oct 2022 Alberto Natali, Geert Leus

Fitting a polynomial to observed data is an ubiquitous task in many signal processing and machine learning tasks, such as interpolation and prediction.

regression

Learning Time-Varying Graphs from Online Data

no code implementations21 Oct 2021 Alberto Natali, Elvin Isufi, Mario Coutino, Geert Leus

This work proposes an algorithmic framework to learn time-varying graphs from online data.

Graph Learning

Online Time-Varying Topology Identification via Prediction-Correction Algorithms

no code implementations22 Oct 2020 Alberto Natali, Mario Coutino, Elvin Isufi, Geert Leus

Signal processing and machine learning algorithms for data supported over graphs, require the knowledge of the graph topology.

Topology-Aware Joint Graph Filter and Edge Weight Identification for Network Processes

no code implementations7 Jul 2020 Alberto Natali, Mario Coutino, Geert Leus

Therefore, in this paper, we focus on the joint identification of coefficients and graph weights defining the graph filter that best models the observed input/output network data.

Forecasting Multi-Dimensional Processes over Graphs

no code implementations17 Apr 2020 Alberto Natali, Elvin Isufi, Geert Leus

The forecasting of multi-variate time processes through graph-based techniques has recently been addressed under the graph signal processing framework.

Time Series Time Series Analysis

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