Search Results for author: Fabio Stella

Found 12 papers, 4 papers with code

Towards a Transportable Causal Network Model Based on Observational Healthcare Data

no code implementations13 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.

Causal Discovery Decision Making +1

Analyzing Complex Systems with Cascades Using Continuous-Time Bayesian Networks

no code implementations21 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.

The Impact of Missing Data on Causal Discovery: A Multicentric Clinical Study

no code implementations17 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.

Causal Discovery Causal Inference +1

A Survey on Causal Discovery: Theory and Practice

no code implementations17 May 2023 Alessio Zanga, Fabio Stella

Understanding the laws that govern a phenomenon is the core of scientific progress.

Causal Discovery Causal Inference

Comparing Deep Reinforcement Learning Algorithms in Two-Echelon Supply Chains

1 code implementation20 Apr 2022 Francesco Stranieri, Fabio Stella

In this study, we analyze and compare the performance of state-of-the-art deep reinforcement learning algorithms for solving the supply chain inventory management problem.

Decision Making Management +2

Unity is strength: Improving the Detection of Adversarial Examples with Ensemble Approaches

1 code implementation24 Nov 2021 Francesco Craighero, Fabrizio Angaroni, Fabio Stella, Chiara Damiani, Marco Antoniotti, Alex Graudenzi

A key challenge in computer vision and deep learning is the definition of robust strategies for the detection of adversarial examples.

Unity

Counterfactual Contextual Multi-Armed Bandit: a Real-World Application to Diagnose Apple Diseases

no code implementations8 Feb 2021 Gabriele Sottocornola, Fabio Stella, Markus Zanker

Specifically, this paper addresses the problem of sequentially optimizing for the best diagnosis, leveraging past interactions with the system and their contextual information (i. e. the evidence provided by the users).

Active Learning counterfactual +1

Hard and Soft EM in Bayesian Network Learning from Incomplete Data

1 code implementation9 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.

Imputation

A Constraint-Based Algorithm for the Structural Learning of Continuous-Time Bayesian Networks

no code implementations7 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.

Investigating the Compositional Structure Of Deep Neural Networks

no code implementations17 Feb 2020 Francesco Craighero, Fabrizio Angaroni, Alex Graudenzi, Fabio Stella, Marco Antoniotti

By defining a direct acyclic graph representing the composition of activation patterns through the network layers, it is possible to characterize the instances of the input data with respect to both the predicted label and the specific (linear) transformation used to perform predictions.

CTBNCToolkit: Continuous Time Bayesian Network Classifier Toolkit

1 code implementation18 Apr 2014 Daniele Codecasa, Fabio Stella

CTBNCToolkit implements the inference algorithm, the parameter learning algorithm, and the structural learning algorithm for continuous time Bayesian network classifiers.

Clustering General Classification

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