no code implementations • 14 Apr 2024 • Francesco Binucci, Paolo Banelli, Paolo Di Lorenzo, Sergio Barbarossa
This approach is particularly useful every time a device needs to transmit data (or features) to a server that has to fulfil an inference task, as it provides a principled way to extract the most relevant features for the task to be executed, while looking for the best trade-off between the size of the feature vector to be transmitted, inference accuracy, and complexity.
no code implementations • 10 Jan 2024 • Eleonora Grassucci, Jihong Park, Sergio Barbarossa, Seong-Lyun Kim, Jinho Choi, Danilo Comminiello
Disclosing generative models capabilities in semantic communication paves the way for a paradigm shift with respect to conventional communication systems, which has great potential to reduce the amount of data traffic and offers a revolutionary versatility to novel tasks and applications that were not even conceivable a few years ago.
no code implementations • 20 Dec 2023 • Lucia Testa, Claudio Battiloro, Stefania Sardellitti, Sergio Barbarossa
In this work, we study the problem of stability of Graph Convolutional Neural Networks (GCNs) under random small perturbations in the underlying graph topology, i. e. under a limited number of insertions or deletions of edges.
1 code implementation • 27 Nov 2023 • Gabriele D'Acunto, Paolo Di Lorenzo, Francesco Bonchi, Stefania Sardellitti, Sergio Barbarossa
Despite the large research effort devoted to learning dependencies between time series, the state of the art still faces a major limitation: existing methods learn partial correlations but fail to discriminate across distinct frequency bands.
no code implementations • 21 Oct 2023 • Paolo Di Lorenzo, Mattia Merluzzi, Francesco Binucci, Claudio Battiloro, Paolo Banelli, Emilio Calvanese Strinati, Sergio Barbarossa
Internet of Things (IoT) applications combine sensing, wireless communication, intelligence, and actuation, enabling the interaction among heterogeneous devices that collect and process considerable amounts of data.
1 code implementation • 5 Sep 2023 • Claudio Battiloro, Lucia Testa, Lorenzo Giusti, Stefania Sardellitti, Paolo Di Lorenzo, Sergio Barbarossa
The aim of this work is to introduce Generalized Simplicial Attention Neural Networks (GSANs), i. e., novel neural architectures designed to process data defined on simplicial complexes using masked self-attentional layers.
1 code implementation • 7 Jun 2023 • Eleonora Grassucci, Sergio Barbarossa, Danilo Comminiello
We prove, through an in-depth assessment of multiple scenarios, that our method outperforms existing solutions in generating high-quality images with preserved semantic information even in cases where the received content is significantly degraded.
no code implementations • 3 May 2023 • Francesco Binucci, Paolo Banelli, Paolo Di Lorenzo, Sergio Barbarossa
A common challenge in running inference tasks from remote is to extract and transmit only the features that are most significant for the inference task.
no code implementations • 16 Feb 2023 • Claudio Battiloro, Stefania Sardellitti, Sergio Barbarossa, Paolo Di Lorenzo
Weighing the topological domain over which data can be represented and analysed is a key strategy in many signal processing and machine learning applications, enabling the extraction and exploitation of meaningful data features and their (higher order) relationships.
1 code implementation • 26 Oct 2022 • Claudio Battiloro, Paolo Di Lorenzo, Sergio Barbarossa
This paper introduces topological Slepians, i. e., a novel class of signals defined over topological spaces (e. g., simplicial complexes) that are maximally concentrated on the topological domain (e. g., over a set of nodes, edges, triangles, etc.)
1 code implementation • 16 Sep 2022 • Lorenzo Giusti, Claudio Battiloro, Lucia Testa, Paolo Di Lorenzo, Stefania Sardellitti, Sergio Barbarossa
In this paper, we introduce Cell Attention Networks (CANs), a neural architecture operating on data defined over the vertices of a graph, representing the graph as the 1-skeleton of a cell complex introduced to capture higher order interactions.
Ranked #7 on Graph Classification on NCI109
no code implementations • 16 Jul 2022 • Gabriele D'Acunto, Paolo Di Lorenzo, Sergio Barbarossa
The inference of causal structures from observed data plays a key role in unveiling the underlying dynamics of the system.
no code implementations • 25 Feb 2022 • Francesco Pezone, Sergio Barbarossa, Paolo Di Lorenzo
The IB principle is used to design the encoder in order to find an optimal balance between representation complexity and relevance of the encoded data with respect to the goal.
no code implementations • 22 Jan 2022 • Stefania Sardellitti, Sergio Barbarossa
To overcome this limit, in this paper we extend TSP to deal with signals defined over cell complexes and we also generalize the concept of cell complexes to include hollow cells.
no code implementations • 21 Dec 2021 • Paolo Di Lorenzo, Mattia Merluzzi, Emilio Calvanese Strinati, Sergio Barbarossa
In this paper, we propose a novel algorithm for energy-efficient, low-latency dynamic mobile edge computing (MEC), in the context of beyond 5G networks endowed with Reconfigurable Intelligent Surfaces (RISs).
no code implementations • 13 Dec 2021 • Stefania Sardellitti, Sergio Barbarossa, Lucia Testa
The Topological Signal Processing (TSP) framework has been recently developed to analyze signals defined over simplicial complexes, i. e. topological spaces represented by finite sets of elements that are closed under inclusion of subsets [1].
no code implementations • 4 Nov 2020 • Emilio Calvanese Strinati, Sergio Barbarossa
The idea is that, whenever communication occurs to convey meaning or to accomplish a goal, what really matters is the impact that the correct reception/interpretation of a packet is going to have on the goal accomplishment.
no code implementations • 8 Aug 2020 • Mattia Merluzzi, Nicola di Pietro, Paolo Di Lorenzo, Emilio Calvanese Strinati, Sergio Barbarossa
We propose a novel strategy for energy-efficient dynamic computation offloading, in the context of edge-computing-aided beyond 5G networks.
1 code implementation • 26 Jul 2019 • Sergio Barbarossa, Stefania Sardellitti
The goal of this paper is to establish the fundamental tools to analyze signals defined over a topological space, i. e. a set of points along with a set of neighborhood relations.
no code implementations • 12 Sep 2017 • Paolo Di Lorenzo, Paolo Banelli, Elvin Isufi, Sergio Barbarossa, Geert Leus
Numerical simulations carried out over both synthetic and real data illustrate the good performance of the proposed sampling and reconstruction strategies for (possibly distributed) adaptive learning of signals defined over graphs.
no code implementations • 18 Feb 2016 • Paolo Di Lorenzo, Sergio Barbarossa, Paolo Banelli, Stefania Sardellitti
The aim of this paper is to propose a least mean squares (LMS) strategy for adaptive estimation of signals defined over graphs.