Search Results for author: Panagiotis Tsilifis

Found 6 papers, 1 papers with code

Bayesian Inverse Problems with Conditional Sinkhorn Generative Adversarial Networks in Least Volume Latent Spaces

no code implementations22 May 2024 Qiuyi Chen, Panagiotis Tsilifis, Mark Fuge

Recently, generative models such as Generative Adversarial Networks (GANs) have shown great potential in approximating complex high dimensional conditional distributions and have paved the way for characterizing posterior densities in Bayesian inverse problems, yet the problems' high dimensionality and high nonlinearity often impedes the model's training.

Dimensionality Reduction

Sparse Polynomial Chaos expansions using Variational Relevance Vector Machines

no code implementations23 Dec 2019 Panagiotis Tsilifis, Iason Papaioannou, Daniel Straub, Fabio Nobile

The challenges for non-intrusive methods for Polynomial Chaos modeling lie in the computational efficiency and accuracy under a limited number of model simulations.

Compressive Sensing Computational Efficiency +1

Efficient Bayesian experimentation using an expected information gain lower bound

no code implementations30 May 2015 Panagiotis Tsilifis, Roger G. Ghanem, Paris Hajali

We propose a framework where a lower bound of the expected information gain is used as an alternative design criterion.

Experimental Design

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