Search Results for author: Ashia Wilson

Found 5 papers, 5 papers with code

Mean-field underdamped Langevin dynamics and its spacetime discretization

1 code implementation26 Dec 2023 Qiang Fu, Ashia Wilson

We propose a new method called the N-particle underdamped Langevin algorithm for optimizing a special class of non-linear functionals defined over the space of probability measures.

Density Estimation

Fast sampling from constrained spaces using the Metropolis-adjusted Mirror Langevin algorithm

1 code implementation14 Dec 2023 Vishwak Srinivasan, Andre Wibisono, Ashia Wilson

This algorithm adds an accept-reject filter to the Markov chain induced by a single step of the Mirror Langevin algorithm (Zhang et al., 2020), which is a basic discretisation of the Mirror Langevin dynamics.

DiffusionWorldViewer: Exposing and Broadening the Worldview Reflected by Generative Text-to-Image Models

1 code implementation18 Sep 2023 Zoe De Simone, Angie Boggust, Arvind Satyanarayan, Ashia Wilson

Generative text-to-image (TTI) models produce high-quality images from short textual descriptions and are widely used in academic and creative domains.

Fairness

Approximate Cross-validation: Guarantees for Model Assessment and Selection

1 code implementation2 Mar 2020 Ashia Wilson, Maximilian Kasy, Lester Mackey

Cross-validation (CV) is a popular approach for assessing and selecting predictive models.

Model Selection

Accelerating Rescaled Gradient Descent: Fast Optimization of Smooth Functions

1 code implementation NeurIPS 2019 Ashia Wilson, Lester Mackey, Andre Wibisono

We also introduce a new first-order algorithm, called rescaled gradient descent (RGD), and show that RGD achieves a faster convergence rate than gradient descent provided the function is strongly smooth -- a natural generalization of the standard smoothness assumption on the objective function.

Optimization and Control

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