no code implementations • 29 Nov 2023 • Marco Scutari
Bayesian networks (BNs) are a foundational model in machine learning and causal inference.
no code implementations • 13 Nov 2023 • Alice Bernasconi, Alessio Zanga, Peter J. F. Lucas, Marco Scutari, Fabio Stella
Over the last decades, many prognostic models based on artificial intelligence techniques have been used to provide detailed predictions in healthcare.
no code implementations • 21 Aug 2023 • Alessandro Bregoli, Karin Rathsman, Marco Scutari, Fabio Stella, Søren Wengel Mogensen
Interacting systems of events may exhibit cascading behavior where events tend to be temporally clustered.
no code implementations • 11 Aug 2023 • Lorenzo Valleggi, Marco Scutari, Federico Mattia Stefanini
Rooted in the linear mixed-effects models framework and tailored for hierarchical data, this novel approach demonstrates enhanced BN learning.
no code implementations • 17 May 2023 • Alessio Zanga, Alice Bernasconi, Peter J. F. Lucas, Hanny Pijnenborg, Casper Reijnen, Marco Scutari, Fabio Stella
Causal inference for testing clinical hypotheses from observational data presents many difficulties because the underlying data-generating model and the associated causal graph are not usually available.
no code implementations • 17 May 2023 • Alessio Zanga, Alice Bernasconi, Peter J. F. Lucas, Hanny Pijnenborg, Casper Reijnen, Marco Scutari, Fabio Stella
Assessing the pre-operative risk of lymph node metastases in endometrial cancer patients is a complex and challenging task.
no code implementations • 3 May 2023 • Marco Scutari
The adoption of machine learning in applications where it is crucial to ensure fairness and accountability has led to a large number of model proposals in the literature, largely formulated as optimisation problems with constraints reducing or eliminating the effect of sensitive attributes on the response.
no code implementations • 8 Jun 2022 • Marco Scutari, Christopher Marquis, Laura Azzimonti
We commonly assume that data are a homogeneous set of observations when learning the structure of Bayesian networks.
no code implementations • 12 May 2022 • Marco Scutari
Invited discussion on the paper "Hybrid Semiparametric Bayesian Networks" by David Atienza, Pedro Larranaga and Concha Bielza (TEST, 2022).
no code implementations • 18 May 2021 • Marco Scutari, Francesca Panero, Manuel Proissl
In this paper we present a general framework for estimating regression models subject to a user-defined level of fairness.
1 code implementation • 9 Dec 2020 • Andrea Ruggieri, Francesco Stranieri, Fabio Stella, Marco Scutari
Incomplete data are a common feature in many domains, from clinical trials to industrial applications.
no code implementations • 4 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).
no code implementations • 7 Jul 2020 • Alessandro Bregoli, Marco Scutari, Fabio Stella
Dynamic Bayesian networks have been well explored in the literature as discrete-time models: however, their continuous-time extensions have seen comparatively little attention.
no code implementations • 29 Apr 2020 • Tjebbe Bodewes, Marco Scutari
Bayesian network (BN) structure learning from complete data has been extensively studied in the literature.
no code implementations • 15 Jun 2019 • Marco Scutari
Bayesian networks are a versatile and powerful tool to model complex phenomena and the interplay of their components in a probabilistically principled way.
no code implementations • 30 May 2018 • Marco Scutari, Catharina Elisabeth Graafland, José Manuel Gutiérrez
Three classes of algorithms to learn the structure of Bayesian networks from data are common in the literature: constraint-based algorithms, which use conditional independence tests to learn the dependence structure of the data; score-based algorithms, which use goodness-of-fit scores as objective functions to maximise; and hybrid algorithms that combine both approaches.
no code implementations • 2 Aug 2017 • Marco Scutari
We will use this connection to show that BDeu should not be used for structure learning from sparse data, since it violates the maximum relative entropy principle; and that it is also problematic from a more classic Bayesian model selection perspective, because it produces Bayes factors that are sensitive to the value of its only hyperparameter.
no code implementations • 12 Apr 2017 • Marco Scutari
For discrete Bayesian networks, the canonical choice for a posterior score is the Bayesian Dirichlet equivalent uniform (BDeu) marginal likelihood with a uniform (U) graph prior, which assumes a uniform prior both on the network structures and on the parameters of the networks.
no code implementations • 12 May 2016 • Marco Scutari
For discrete Bayesian networks, the canonical choice for a posterior score is the Bayesian Dirichlet equivalent uniform (BDeu) marginal likelihood with a uniform (U) graph prior (Heckerman et al., 1995).
no code implementations • 30 Jun 2014 • Marco Scutari
It is well known in the literature that the problem of learning the structure of Bayesian networks is very hard to tackle: its computational complexity is super-exponential in the number of nodes in the worst case and polynomial in most real-world scenarios.
no code implementations • 14 Oct 2012 • Marco Scutari
Graphical modelling has a long history in statistics as a tool for the analysis of multivariate data, starting from Wright's path analysis and Gibbs' applications to statistical physics at the beginning of the last century.
no code implementations • 5 Apr 2011 • Marco Scutari, Radhakrishnan Nagarajan
Results: The improved performance of the proposed approach is demonstrated across the synthetic data sets using sensitivity, specificity and accuracy as performance metrics.
2 code implementations • 26 Aug 2009 • Marco Scutari
bnlearn is an R package which includes several algorithms for learning the structure of Bayesian networks with either discrete or continuous variables.