Search Results for author: Piotr Zwiernik

Found 4 papers, 0 papers with code

Robust estimation of tree structured models

no code implementations10 Feb 2021 Marta Casanellas, Marina Garrote-López, Piotr Zwiernik

Consider the problem of learning undirected graphical models on trees from corrupted data.

Learning partial correlation graphs and graphical models by covariance queries

no code implementations22 Jun 2019 Gábor Lugosi, Jakub Truszkowski, Vasiliki Velona, Piotr Zwiernik

We study the problem of recovering the structure underlying large Gaussian graphical models or, more generally, partial correlation graphs.

Latent tree models

no code implementations2 Aug 2017 Piotr Zwiernik

Latent tree models are graphical models defined on trees, in which only a subset of variables is observed.

Marginal likelihood and model selection for Gaussian latent tree and forest models

no code implementations29 Dec 2014 Mathias Drton, Shaowei Lin, Luca Weihs, Piotr Zwiernik

We clarify how in this case real log-canonical thresholds can be computed using polyhedral geometry, and we show how to apply the general theory to the Laplace integrals associated with Gaussian latent tree and forest models.

Bayesian Inference Model Selection

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