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Sobihan Surendran

4 accepted papers

2025

Theoretical Convergence Guarantees for Variational Autoencoders

AISTATS 2025poster

Variational Autoencoders (VAE) are popular generative models used to sample from complex data distributions. Despite their empirical success in various machine learning tasks, significant gaps remain in understanding their theoretical properties, particularly regarding convergence guarantees. This p…

Cited by 0SourceScholar
2025

Wasserstein Convergence of Critically Damped Langevin Diffusions

NeurIPS 2025poster

Score-based Generative Models (SGMs) have achieved impressive performance in data generation across a wide range of applications and benefit from strong theoretical guarantees. Recently, methods inspired by statistical mechanics, in particular, Hamiltonian dynamics, have introduced Critically-damped…

Cited by 0SourceScholar
2024

Non-asymptotic Analysis of Biased Adaptive Stochastic Approximation

NeurIPS 2024poster

Stochastic Gradient Descent (SGD) with adaptive steps is widely used to train deep neural networks and generative models. Most theoretical results assume that it is possible to obtain unbiased gradient estimators, which is not the case in several recent deep learning and reinforcement learning appli…