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Joseph D. Viviano

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#machine learning Preprint Oct 2026

Mixture of GFlowNets

Generative Flow Networks (GFlowNets) learn a policy that samples compositional objects in proportion to an unnormalized reward $R(x)$. This makes them useful wherever many diverse, high-reward candidates are needed and oracle queries are expensive. In practice, a single GFlowNet often fails to cover all modes of a comp...

Omar G. Younis, Joseph D. Viviano, Chirayu Anant Haryan et al. · 0 citations

Action abstractions for amortized sampling

This work provides a cognitively motivated approach to action abstraction in RL and is the first demonstration of hierarchical planning in amortized sequential sampling.

Oussama Boussif, L'ena N'ehale Ezzine, Joseph D. Viviano et al. · 4 citations · ⚡1

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