Search Results for author: Michele Ciavotta

Found 5 papers, 2 papers with code

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.

Towards Self-Adaptive Peer-to-Peer Monitoring for Fog Environments

no code implementations9 May 2022 Vera Colombo, Alessandro Tundo, Michele Ciavotta, Leonardo Mariani

In such environments, monitoring solutions have to cope with the heterogeneity of the devices and platforms present in the Fog, the limited resources available at the edge of the network, and the high dynamism of the whole Cloud-to-Thing continuum.

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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