Search Results for author: Alfredo Braunstein

Found 8 papers, 4 papers with code

Inference in conditioned dynamics through causality restoration

1 code implementation18 Oct 2022 Alfredo Braunstein, Giovanni Catania, Luca Dall'Asta, Matteo Mariani, Anna Paola Muntoni

Computing observables from conditioned dynamics is typically computationally hard, because, although obtaining independent samples efficiently from the unconditioned dynamics is usually feasible, generally most of the samples must be discarded (in a form of importance sampling) because they do not satisfy the imposed conditions.

A Bayesian generative neural network framework for epidemic inference problems

2 code implementations5 Nov 2021 Indaco Biazzo, Alfredo Braunstein, Luca Dall'Asta, Fabio Mazza

The reconstruction of missing information in epidemic spreading on contact networks can be essential in the prevention and containment strategies.

Relationship between fitness and heterogeneity in exponentially growing microbial populations

1 code implementation6 Apr 2021 Anna Paola Muntoni, Alfredo Braunstein, Andrea Pagnani, Daniele De Martino, Andrea De Martino

The constrained optimization of evolutionarily-motivated objective functions like the growth rate has emerged as the key theoretical assumption for the study of bacterial metabolism.

Expectation propagation on the diluted Bayesian classifier

no code implementations20 Sep 2020 Alfredo Braunstein, Thomas Gueudré, Andrea Pagnani, Mirko Pieropan

Efficient feature selection from high-dimensional datasets is a very important challenge in many data-driven fields of science and engineering.

Binary Classification feature selection +1

Compressed sensing reconstruction using Expectation Propagation

no code implementations10 Apr 2019 Alfredo Braunstein, Anna Paola Muntoni, Andrea Pagnani, Mirko Pieropan

Many interesting problems in fields ranging from telecommunications to computational biology can be formalized in terms of large underdetermined systems of linear equations with additional constraints or regularizers.

Bayesian Inference

Loop corrections in spin models through density consistency

1 code implementation24 Oct 2018 Alfredo Braunstein, Giovanni Catania, Luca Dall'Asta

Computing marginal distributions of discrete or semidiscrete Markov random fields (MRFs) is a fundamental, generally intractable problem with a vast number of applications in virtually all fields of science.

A Max-Sum algorithm for training discrete neural networks

no code implementations20 May 2015 Carlo Baldassi, Alfredo Braunstein

The algorithm we present performs as well as BP on binary perceptron learning problems, and may be better suited to address the problem on fully-connected two-layer networks, since inherent symmetries in two layer networks are naturally broken using the MS approach.

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