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A. Souza

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#artificial intelligence Preprint Oct 2026

Learning a Mixture of GFlowNets

Learning an ensemble of GFlowNets to sample from a discrete target distribution has become a common approach for achieving better state space exploration and convergence than that of a monolithic sampler. However, these methods often add a substantial runtime overhead to the base model, and their conceptual connection...

Tiago da Silva, A. Souza, S. Lahlou · 0 citations
Preprint Aug 2026

Differentiable Lifting for Topological Neural Networks

This work proposes $\partial$lift (DiffLift), a general framework for learning graph liftings to hypergraphs and cellular- and simplicial complexes in an end-to-end fashion and shows that $\partial$lift outperforms existing lifting methods on multiple benchmarks for graph and node classification across different TNN ar...

J. L. Franco, Gabriel Duarte, Alexander Nikitin et al. · 2 citations

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