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Nikita Morozov

5 accepted papers

2025

Optimizing Backward Policies in GFlowNets via Trajectory Likelihood Maximization

ICLR 2025poster

Generative Flow Networks (GFlowNets) are a family of generative models that learn to sample objects with probabilities proportional to a given reward function. The key concept behind GFlowNets is the use of two stochastic policies: a forward policy, which incrementally constructs compositional objec…

2025

Revisiting Non-Acyclic GFlowNets in Discrete Environments

ICML 2025poster

Generative Flow Networks (GFlowNets) are a family of generative models that learn to sample objects from a given probability distribution, potentially known up to a normalizing constant. Instead of working in the object space, GFlowNets proceed by sampling trajectories in an appropriately constructe…

2024

Differentiable Rendering with Reparameterized Volume Sampling

AISTATS 2024poster

In view synthesis, a neural radiance field approximates underlying density and radiance fields based on a sparse set of scene pictures. To generate a pixel of a novel view, it marches a ray through the pixel and computes a weighted sum of radiance emitted from a dense set of ray points. This renderi…

2024

Generative Flow Networks as Entropy-Regularized RL

AISTATS 2024poster

The recently proposed generative flow networks (GFlowNets) are a method of training a policy to sample compositional discrete objects with probabilities proportional to a given reward via a sequence of actions. GFlowNets exploit the sequential nature of the problem, drawing parallels with reinforcem…

2024

Several Stories about High-Multiplicity EFx Allocation (Student Abstract)

AAAI 2024technical

Fair division is a topic that has significant social and industrial value. In this work, we study allocations that simultaneously satisfy definitions of fairness and efficiency: EFx and PO. First, we prove that the problem of finding such allocations is NP-hard for two agents. Then, we propose a con…

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