Search Results for author: Amanda Lenzi

Found 5 papers, 1 papers with code

A variational neural Bayes framework for inference on intractable posterior distributions

no code implementations16 Apr 2024 Elliot Maceda, Emily C. Hector, Amanda Lenzi, Brian J. Reich

In this paper, we propose a framework for Bayesian posterior estimation by mapping data to posteriors of parameters using a neural network trained on data simulated from the complex model.

Uncertainty Quantification

Neural Likelihood Surfaces for Spatial Processes with Computationally Intensive or Intractable Likelihoods

no code implementations8 May 2023 Julia Walchessen, Amanda Lenzi, Mikael Kuusela

We conclude that our method provides fast and accurate parameter estimation with a reliable method of uncertainty quantification in situations where standard methods are either undesirably slow or inaccurate.

Uncertainty Quantification

Towards black-box parameter estimation

no code implementations27 Mar 2023 Amanda Lenzi, Haavard Rue

Deep learning algorithms have recently shown to be a successful tool in estimating parameters of statistical models for which simulation is easy, but likelihood computation is challenging.

Time Series

Neural Networks for Parameter Estimation in Intractable Models

no code implementations29 Jul 2021 Amanda Lenzi, Julie Bessac, Johann Rudi, Michael L. Stein

We propose to use deep learning to estimate parameters in statistical models when standard likelihood estimation methods are computationally infeasible.

Parameter Estimation with Dense and Convolutional Neural Networks Applied to the FitzHugh-Nagumo ODE

1 code implementation12 Dec 2020 Johann Rudi, Julie Bessac, Amanda Lenzi

We employ the neural networks to approximate reconstruction maps for model parameter estimation from observational data, where the data comes from the solution of the ODE and takes the form of a time series representing dynamically spiking membrane potential of a biological neuron.

Time Series Analysis

Cannot find the paper you are looking for? You can Submit a new open access paper.