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Poster
in
Workshop: Machine Learning and the Physical Sciences

Particle Graph Autoencoders and Differentiable, Learned Energy Mover's Distance

Steven Tsan · Sukanya Krishna · Raghav Kansal · Anthony Aportela · Farouk Mokhtar · Daniel Diaz · Javier Duarte · Maurizio Pierini · jean-roch vlimant


Abstract:

Autoencoders have useful applications in high energy physics in both compression and anomaly detection, particularly for jets: collimated showers of particles produced in collisions such as those at the CERN Large Hadron Collider. We explore the use of graph-based autoencoders, which operate on jets in their "particle cloud" representations and can leverage the interdependencies among the particles within jets, for such tasks. Additionally, we develop a differentiable approximation to the energy mover's distance via a graph neural network, which may subsequently be used as a reconstruction loss function for autoencoders.

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