Search Results for author: Giorgio Corani

Found 13 papers, 3 papers with code

Efficient probabilistic reconciliation of forecasts for real-valued and count time series

no code implementations5 Oct 2022 Lorenzo Zambon, Dario Azzimonti, Giorgio Corani

The forecasts for these time series are required to be coherent, that is, to satisfy the constraints given by the hierarchy.

Time Series Time Series Analysis

Time series forecasting with Gaussian Processes needs priors

1 code implementation17 Sep 2020 Giorgio Corani, Alessio Benavoli, Marco Zaffalon

Automatic forecasting is the task of receiving a time series and returning a forecast for the next time steps without any human intervention.

Gaussian Processes Time Series +1

A Bayesian Hierarchical Score for Structure Learning from Related Data Sets

no code implementations4 Aug 2020 Laura Azzimonti, Giorgio Corani, Marco Scutari

In this paper we propose a new Bayesian Dirichlet score, which we call Bayesian Hierarchical Dirichlet (BHD).

Efficient Learning of Bounded-Treewidth Bayesian Networks from Complete and Incomplete Data Sets

no code implementations7 Feb 2018 Mauro Scanagatta, Giorgio Corani, Marco Zaffalon, Jaemin Yoo, U Kang

We present a novel anytime algorithm (k-MAX) method for this task, which scales up to thousands of variables.

Imputation

Entropy-based Pruning for Learning Bayesian Networks using BIC

no code implementations19 Jul 2017 Cassio P. de Campos, Mauro Scanagatta, Giorgio Corani, Marco Zaffalon

For decomposable score-based structure learning of Bayesian networks, existing approaches first compute a collection of candidate parent sets for each variable and then optimize over this collection by choosing one parent set for each variable without creating directed cycles while maximizing the total score.

Learning Treewidth-Bounded Bayesian Networks with Thousands of Variables

no code implementations NeurIPS 2016 Mauro Scanagatta, Giorgio Corani, Cassio P. de Campos, Marco Zaffalon

We present a method for learning treewidth-bounded Bayesian networks from data sets containing thousands of variables.

Statistical comparison of classifiers through Bayesian hierarchical modelling

1 code implementation28 Sep 2016 Giorgio Corani, Alessio Benavoli, Janez Demšar, Francesca Mangili, Marco Zaffalon

Usually one compares the accuracy of two competing classifiers via null hypothesis significance tests (nhst).

Two-sample testing

Time for a change: a tutorial for comparing multiple classifiers through Bayesian analysis

1 code implementation14 Jun 2016 Alessio Benavoli, Giorgio Corani, Janez Demsar, Marco Zaffalon

The machine learning community adopted the use of null hypothesis significance testing (NHST) in order to ensure the statistical validity of results.

BIG-bench Machine Learning

Learning Bounded Treewidth Bayesian Networks with Thousands of Variables

no code implementations11 May 2016 Mauro Scanagatta, Giorgio Corani, Cassio P. de Campos, Marco Zaffalon

We present a method for learning treewidth-bounded Bayesian networks from data sets containing thousands of variables.

Learning Bayesian Networks with Thousands of Variables

no code implementations NeurIPS 2015 Mauro Scanagatta, Cassio P. de Campos, Giorgio Corani, Marco Zaffalon

We present a method for learning Bayesian networks from data sets containingthousands of variables without the need for structure constraints.

Should we really use post-hoc tests based on mean-ranks?

no code implementations9 May 2015 Alessio Benavoli, Giorgio Corani, Francesca Mangili

In other words, the outcome of the comparison between algorithms A and B depends also on the performance of the other algorithms included in the original experiment.

BIG-bench Machine Learning

Credal Model Averaging for classification: representing prior ignorance and expert opinions

no code implementations14 May 2014 Giorgio Corani, Andrea Mignatti

CMA detects prior-dependent instances, namely instances in which a different class is more probable depending on the prior over the models.

General Classification Small Data Image Classification

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