publications

2024

    2023

    1. gwl.png
      On the Expressive Power of Geometric Graph Neural Networks
      Chaitanya K Joshi*, Cristian Bodnar*, Simon V Mathis, and 2 more authors
      In International Conference on Machine Learning, 2023
      arXiv Code

    2022

    1. thesis2.png
      Topological Deep Learning: Graphs, Complexes, Sheaves
      Cristian Bodnar
      PhD Thesis, University of Cambridge, 2022
      Website
    2. san.png
      Sheaf Attention Networks
      Federico Barbero, Cristian Bodnar, Haitz Sáez Ocáriz Borde, and 1 more author
      In NeurIPS 2022 Workshop on SymFmetry and Geometry in Neural Representations (Oral), 2022
      PDF
    3. sheaf_propagation.png
      Surfing on the Neural Sheaf
      Julian Suk*, Lorenzo Giusti*, Tamir Hemo*, and 3 more authors
      In NeurIPS 2022 Workshop on Symmetry and Geometry in Neural Representations, 2022
      PDF
    4. riemannian-diagram.png
      Sheaf Neural Networks with Connection Laplacians
      Federico Barbero, Cristian Bodnar, Haitz Sáez Ocáriz Borde, and 3 more authors
      In Topological, Algebraic and Geometric Learning Workshops, 2022
      arXiv
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      Neural Sheaf Diffusion: A Topological Perspective on Heterophily and Oversmoothing in GNNs
      Cristian Bodnar, Francesco Di Giovanni, Benjamin Paul Chamberlain, and 2 more authors
      In Advances in Neural Information Processing Systems, 2022
      arXiv Blog Code

    2021

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      Weisfeiler and Lehman Go Cellular: CW Networks
      Cristian Bodnar*, Fabrizio Frasca*, Nina Otter, and 4 more authors
      Advances in Neural Information Processing Systems, 2021
      arXiv Blog Code
    2. mpsn.png
      Weisfeiler and Lehman Go Topological: Message Passing Simplicial Networks
      Cristian Bodnar*, Fabrizio Frasca*, Yuguang Wang*, and 4 more authors
      In International Conference on Machine Learning, 2021
      arXiv Blog Code
    3. ndp_exp.png
      Neural ODE Processes
      Alexander Norcliffe*, Cristian Bodnar*, Ben Day*, and 2 more authors
      In International Conference on Learning Representations, 2021
      arXiv Code
    4. dgm_viz.png
      Deep Graph Mapper: Seeing Graphs through the Neural Lens
      Cristian Bodnar*, Cătălina Cangea*, and Pietro Liò
      Frontiers in Big Data, 2021
      PDF
    5. metric_space_rl.png
      A metric space perspective on self-supervised policy adaptation
      Cristian Bodnar, Karol Hausman, Gabriel Dulac-Arnold, and 1 more author
      IEEE Robotics and Automation Letters, 2021
      PDF

    2020

    1. sonode.gif
      On Second Order Behaviour in Augmented Neural ODEs
      Alexander Norcliffe, Cristian Bodnar, Ben Day, and 2 more authors
      Advances in Neural Information Processing Systems, 2020
      arXiv Code
    2. q2opt.gif
      Quantile QT-Opt for Risk-Aware Vision-Based Robotic Grasping
      Cristian Bodnar, Adrian Li, Karol Hausman, and 2 more authors
      In Robotics: Science and Systems (Best Systems Paper Finalist), 2020
      arXiv Website
    3. pderl.png
      Proximal distilled evolutionary reinforcement learning
      Cristian Bodnar, Ben Day, and Pietro Lió
      In Proceedings of the AAAI Conference on Artificial Intelligence, 2020
      arXiv Code
    4. isomorphism_classes.png
      The Role of Isomorphism Classes in Multi-Relational Datasets
      Vijja Wichitwechkarn*, Ben Day*, Cristian Bodnar*, and 2 more authors
      AAAI Workshop on Graphs and more Complex structures for Learning and Reasoning, 2020
      arXiv