Search Results for author: Beatrice Bevilacqua

Found 12 papers, 5 papers with code

GRANOLA: Adaptive Normalization for Graph Neural Networks

no code implementations20 Apr 2024 Moshe Eliasof, Beatrice Bevilacqua, Carola-Bibiane Schönlieb, Haggai Maron

In recent years, significant efforts have been made to refine the design of Graph Neural Network (GNN) layers, aiming to overcome diverse challenges, such as limited expressive power and oversmoothing.

Subgraphormer: Unifying Subgraph GNNs and Graph Transformers via Graph Products

no code implementations13 Feb 2024 Guy Bar-Shalom, Beatrice Bevilacqua, Haggai Maron

In the realm of Graph Neural Networks (GNNs), two exciting research directions have recently emerged: Subgraph GNNs and Graph Transformers.

Efficient Subgraph GNNs by Learning Effective Selection Policies

1 code implementation30 Oct 2023 Beatrice Bevilacqua, Moshe Eliasof, Eli Meirom, Bruno Ribeiro, Haggai Maron

Subgraph GNNs are provably expressive neural architectures that learn graph representations from sets of subgraphs.

A Multi-Task Perspective for Link Prediction with New Relation Types and Nodes

no code implementations12 Jul 2023 Jincheng Zhou, Beatrice Bevilacqua, Bruno Ribeiro

The task of inductive link prediction in (discrete) attributed multigraphs infers missing attributed links (relations) between nodes in new test multigraphs.

Inductive Link Prediction Relation +1

Graph Positional Encoding via Random Feature Propagation

no code implementations6 Mar 2023 Moshe Eliasof, Fabrizio Frasca, Beatrice Bevilacqua, Eran Treister, Gal Chechik, Haggai Maron

Two main families of node feature augmentation schemes have been explored for enhancing GNNs: random features and spectral positional encoding.

Graph Classification Node Classification

Neural Algorithmic Reasoning with Causal Regularisation

no code implementations20 Feb 2023 Beatrice Bevilacqua, Kyriacos Nikiforou, Borja Ibarz, Ioana Bica, Michela Paganini, Charles Blundell, Jovana Mitrovic, Petar Veličković

We evaluate our method on the CLRS algorithmic reasoning benchmark, where we show up to 3$\times$ improvements on the OOD test data.

Data Augmentation

Causal Lifting and Link Prediction

no code implementations2 Feb 2023 Leonardo Cotta, Beatrice Bevilacqua, Nesreen Ahmed, Bruno Ribeiro

Existing causal models for link prediction assume an underlying set of inherent node factors -- an innate characteristic defined at the node's birth -- that governs the causal evolution of links in the graph.

Knowledge Base Completion Link Prediction

Understanding and Extending Subgraph GNNs by Rethinking Their Symmetries

2 code implementations22 Jun 2022 Fabrizio Frasca, Beatrice Bevilacqua, Michael M. Bronstein, Haggai Maron

Subgraph GNNs are a recent class of expressive Graph Neural Networks (GNNs) which model graphs as collections of subgraphs.

Equivariant Subgraph Aggregation Networks

1 code implementation ICLR 2022 Beatrice Bevilacqua, Fabrizio Frasca, Derek Lim, Balasubramaniam Srinivasan, Chen Cai, Gopinath Balamurugan, Michael M. Bronstein, Haggai Maron

Thus, we propose to represent each graph as a set of subgraphs derived by some predefined policy, and to process it using a suitable equivariant architecture.

Size-Invariant Graph Representations for Graph Classification Extrapolations

1 code implementation8 Mar 2021 Beatrice Bevilacqua, Yangze Zhou, Bruno Ribeiro

In general, graph representation learning methods assume that the train and test data come from the same distribution.

General Classification Graph Classification +1

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