Cell Complex Neural Networks
@article{Hajij2020CellCN, title={Cell Complex Neural Networks}, author={Mustafa Hajij and Kyle Istvan and Ghada Zamzmi}, journal={ArXiv}, year={2020}, volume={abs/2010.00743} }
Cell complexes are topological spaces constructed from simple blocks called cells. They generalize graphs, simplicial complexes, and polyhedral complexes that form important domains for practical applications. We propose a general, combinatorial, and unifying construction for performing neural network-type computations on cell complexes. Furthermore, we introduce inter-cellular message passing schemes, message passing schemes on cell complexes that take the topology of the underlying space into…
23 Citations
Weisfeiler and Lehman Go Topological: Message Passing Simplicial Networks
- Computer ScienceICML
- 2021
Message Passing Simplicial Networks (MPSNs), a class of models that perform message passing on simplicial complexes (SCs) are proposed, and a Simplicial Weisfeiler-Lehman (SWL) colouring procedure is introduced for distinguishing non-isomorphic SCs.
Signal Processing On Cell Complexes
- Computer ScienceICASSP 2022 - 2022 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
- 2022
An introduction to signal processing on (abstract) regular cell complexes, which provide a unifying framework encompassing graphs, simplicial complexes, cubical complexes and various meshes as special cases, and how appropriate Hodge Laplacians for these cell complexes can be derived.
Efficient Representation Learning for Higher-Order Data with Simplicial Complexes
- Computer Science
- 2022
It is shown that simplicial complexes with certain relaxations can more efficiently capture underlying higher-order structures than non-graph structure, regular graph, hypergraph, and traditional simplicial complex-based learning frameworks.
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- Computer Science
- 2022
The preliminary results show that HSNs lead to a statistically significant improvement in the generalization error when compared to base models without high skip components.
Simplicial Complex Representation Learning
- Computer ScienceArXiv
- 2021
This work presents the first method that embeds a simplicial complex to a universal embedding space in a way that complex-to-complex proximity is preserved and utilizes a simplex-level embedding induced by a pre-trained simplicial autoencoder to learn an entire simplicialcomplex representation.
Convolutional Learning on Simplicial Complexes
- MathematicsArXiv
- 2023
We propose a simplicial complex convolutional neural network (SCCNN) to learn data representations on simplicial complexes. It performs convolutions based on the multi-hop simplicial adjacencies via…
Dirac signal processing of higher-order topological signals
- Computer ScienceArXiv
- 2023
Dirac signal processing is proposed, an adaptive, unsupervised signal processing algorithm that learns to jointly learn to jointly topological signals supported on nodes, links and triangles of simplicial complexes in a consistent way.
Semantic-Native Communication: A Simplicial Complex Perspective
- Computer Science2022 IEEE Globecom Workshops (GC Wkshps)
- 2022
Leveraging the topological nature of information, the proposed method is shown to be more reliable and efficient compared to several baselines, notably at low signal-to-noise (SNR) levels.
Pooling Strategies for Simplicial Convolutional Networks
- Computer ScienceArXiv
- 2022
A general formulation for a simplicial pooling layer that performs: i) local aggregation of simplicial signals; ii) principled selection of sampling sets; iii) downsampling and simplicial topology adaptation.
Weisfeiler and Leman Return with Graph Transformations
- Computer Science
- 2022
Novel graph transformations are proposed that are at least as expressive as corresponding message passing algorithms when combined with the Weisfeiler-Leman test or a sufficiently powerful graph neural network and empirically demonstrate that these transformations lead to competitive results on molecular graph datasets.
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