Search Results for author: Antonio Longa

Found 9 papers, 4 papers with code

Putting Context in Context: the Impact of Discussion Structure on Text Classification

1 code implementation5 Feb 2024 Nicolò Penzo, Antonio Longa, Bruno Lepri, Sara Tonelli, Marco Guerini

We also experiment with different amounts of training data and analyse the topology of local discussion networks in a privacy-compliant way.

Stance Detection text-classification +1

Meta-Path Learning for Multi-relational Graph Neural Networks

1 code implementation29 Sep 2023 Francesco Ferrini, Antonio Longa, Andrea Passerini, Manfred Jaeger

Existing multi-relational graph neural networks use one of two strategies for identifying informative relations: either they reduce this problem to low-level weight learning, or they rely on handcrafted chains of relational dependencies, called meta-paths.

Informativeness Knowledge Graphs

Explaining the Explainers in Graph Neural Networks: a Comparative Study

2 code implementations27 Oct 2022 Antonio Longa, Steve Azzolin, Gabriele Santin, Giulia Cencetti, Pietro Liò, Bruno Lepri, Andrea Passerini

Following a fast initial breakthrough in graph based learning, Graph Neural Networks (GNNs) have reached a widespread application in many science and engineering fields, prompting the need for methods to understand their decision process.

Node Classification

Global Explainability of GNNs via Logic Combination of Learned Concepts

1 code implementation13 Oct 2022 Steve Azzolin, Antonio Longa, Pietro Barbiero, Pietro Liò, Andrea Passerini

While instance-level explanation of GNN is a well-studied problem with plenty of approaches being developed, providing a global explanation for the behaviour of a GNN is much less explored, despite its potential in interpretability and debugging.

TEP-GNN: Accurate Execution Time Prediction of Functional Tests using Graph Neural Networks

no code implementations25 Aug 2022 Hazem Peter Samoaa, Antonio Longa, Mazen Mohamad, Morteza Haghir Chehreghani, Philipp Leitner

TEP-GNN uses FA-ASTs, or flow-augmented ASTs, as a graph-based code representation approach, and predicts test execution times using a powerful graph neural network (GNN) deep learning model.

Benchmarking

Emotion Analysis using Multi-Layered Networks for Graphical Representation of Tweets

no code implementations2 Jul 2022 Anna Nguyen, Antonio Longa, Massimiliano Luca, Joe Kaul, Gabriel Lopez

State of the art Graph Neural Networks (GNNs) are used to extract information from the Tweet-MLN and make predictions based on the extracted graph features.

Emotion Recognition Sentiment Analysis

Generating Synthetic Mobility Networks with Generative Adversarial Networks

no code implementations22 Feb 2022 Giovanni Mauro, Massimiliano Luca, Antonio Longa, Bruno Lepri, Luca Pappalardo

We conduct extensive experiments on public datasets of bike and taxi rides to show that MoGAN outperforms the classical Gravity and Radiation models regarding the realism of the generated networks.

Data Augmentation

Cannot find the paper you are looking for? You can Submit a new open access paper.