Search Results for author: Stefano Fiorini

Found 4 papers, 3 papers with code

DiffAssemble: A Unified Graph-Diffusion Model for 2D and 3D Reassembly

1 code implementation29 Feb 2024 Gianluca Scarpellini, Stefano Fiorini, Francesco Giuliari, Pietro Morerio, Alessio Del Bue

Reassembly tasks play a fundamental role in many fields and multiple approaches exist to solve specific reassembly problems.

Denoising

Graph Learning in 4D: a Quaternion-valued Laplacian to Enhance Spectral GCNs

1 code implementation28 Dec 2023 Stefano Fiorini, Stefano Coniglio, Michele Ciavotta, Enza Messina

We introduce QuaterGCN, a spectral Graph Convolutional Network (GCN) with quaternion-valued weights at whose core lies the Quaternionic Laplacian, a quaternion-valued Laplacian matrix by whose proposal we generalize two widely-used Laplacian matrices: the classical Laplacian (defined for undirected graphs) and the complex-valued Sign-Magnetic Laplacian (proposed to handle digraphs with weights of arbitrary sign).

Graph Learning

SigMaNet: One Laplacian to Rule Them All

1 code implementation26 May 2022 Stefano Fiorini, Stefano Coniglio, Michele Ciavotta, Enza Messina

$L^{\sigma}$ is also completely parameter-free, which is not the case of other Laplacian operators such as, e. g., the Magnetic Laplacian.

Listening to the city, attentively: A Spatio-Temporal Attention Boosted Autoencoder for the Short-Term Flow Prediction Problem

no code implementations1 Mar 2021 Stefano Fiorini, Michele Ciavotta, Andrea Maurino

In recent years, studying and predicting alternative mobility (e. g., sharing services) patterns in urban environments has become increasingly important as accurate and timely information on current and future vehicle flows can successfully increase the quality and availability of transportation services.

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