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Mohammad Reza Karimi Jaghargh

5 accepted papers

2024

Constrained Sampling with Primal-Dual Langevin Monte Carlo

NeurIPS 2024poster

This work considers the problem of sampling from a probability distribution known up to a normalization constant while satisfying a set of statistical constraints specified by the expected values of general nonlinear functions. This problem finds applications in, e.g., Bayesian inference, where it c…

2023

A Dynamical System View of Langevin-Based Non-Convex Sampling

NeurIPS 2023spotlight

Non-convex sampling is a key challenge in machine learning, central to non-convex optimization in deep learning as well as to approximate probabilistic inference. Despite its significance, theoretically there remain some important challenges: Existing guarantees suffer from the drawback of lacking g…

Cited by 5SourcePDFScholar
2023

Riemannian stochastic optimization methods avoid strict saddle points

NeurIPS 2023poster

Many modern machine learning applications - from online principal component analysis to covariance matrix identification and dictionary learning - can be formulated as minimization problems on Riemannian manifolds, typically solved with a Riemannian stochastic gradient method (or some variant thereo…

Cited by 8SourcePDFScholar
2023

Stochastic Approximation Algorithms for Systems of Interacting Particles

NeurIPS 2023poster

Interacting particle systems have proven highly successful in various machine learning tasks, including approximate Bayesian inference and neural network optimization. However, the analysis of these systems often relies on the simplifying assumption of the \emph{mean-field} limit, where particle num…

Cited by 5SourcePDFScholar
2019

Consistent Online Optimization: Convex and Submodular

AISTATS 2019poster

Modern online learning algorithms achieve low (sublinear) regret in a variety of diverse settings. These algorithms, however, update their solution at every time step. While these updates are computationally efficient, the very requirement of frequent updates makes the algorithms untenable in some p…

Cited by 18SourcePDFScholar