Search Results for author: Irene Córdoba

Found 4 papers, 0 papers with code

Sparse Cholesky covariance parametrization for recovering latent structure in ordered data

no code implementations2 Jun 2020 Irene Córdoba, Concha Bielza, Pedro Larrañaga, Gherardo Varando

The sparse Cholesky parametrization of the inverse covariance matrix can be interpreted as a Gaussian Bayesian network; however its counterpart, the covariance Cholesky factor, has received, with few notable exceptions, little attention so far, despite having a natural interpretation as a hidden variable model for ordered signal data.

Towards Gaussian Bayesian Network Fusion

no code implementations1 Dec 2018 Irene Córdoba, Concha Bielza, Pedro Larrañaga

In this paper we propose a method for the aggregation of different Bayesian network structures that have been learned from separate data sets, as a first step towards mining data sets that need to be partitioned in an horizontal way, i. e. with respect to the instances, in order to be processed.

Bayesian optimization of the PC algorithm for learning Gaussian Bayesian networks

no code implementations28 Jun 2018 Irene Córdoba, Eduardo C. Garrido-Merchán, Daniel Hernández-Lobato, Concha Bielza, Pedro Larrañaga

We show that the parameters found by a BO method outperform those found by a random search strategy and the expert recommendation.

Bayesian Optimization

A review of Gaussian Markov models for conditional independence

no code implementations23 Jun 2016 Irene Córdoba, Concha Bielza, Pedro Larrañaga

Markov models lie at the interface between statistical independence in a probability distribution and graph separation properties.

Model Selection Two-sample testing

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