Search Results for author: Samuel Power

Found 4 papers, 2 papers with code

Error bounds for particle gradient descent, and extensions of the log-Sobolev and Talagrand inequalities

no code implementations4 Mar 2024 Rocco Caprio, Juan Kuntz, Samuel Power, Adam M. Johansen

We prove non-asymptotic error bounds for particle gradient descent (PGD)~(Kuntz et al., 2023), a recently introduced algorithm for maximum likelihood estimation of large latent variable models obtained by discretizing a gradient flow of the free energy.

Momentum Particle Maximum Likelihood

no code implementations12 Dec 2023 Jen Ning Lim, Juan Kuntz, Samuel Power, Adam M. Johansen

Maximum likelihood estimation (MLE) of latent variable models is often recast as an optimization problem over the extended space of parameters and probability distributions.

A State-Space Perspective on Modelling and Inference for Online Skill Rating

1 code implementation4 Aug 2023 Samuel Duffield, Samuel Power, Lorenzo Rimella

We summarise popular methods used for skill rating in competitive sports, along with their inferential paradigms and introduce new approaches based on sequential Monte Carlo and discrete hidden Markov models.

Computational Efficiency

Accelerated Sampling on Discrete Spaces with Non-Reversible Markov Processes

1 code implementation10 Dec 2019 Samuel Power, Jacob Vorstrup Goldman

We consider the task of MCMC sampling from a distribution defined on a discrete space.

Computation 65C05

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