Search Results for author: Anna Paola Muntoni

Found 8 papers, 3 papers with code

DCAlign v1.0: Aligning biological sequences using co-evolution models and informed priors

no code implementations4 Sep 2023 Anna Paola Muntoni, Andrea Pagnani

DCAlign is a new alignment method able to cope with the conservation and the co-evolution signals that characterize the columns of multiple sequence alignments of homologous sequences.

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.

adabmDCA: Adaptive Boltzmann machine learning for biological sequences

1 code implementation9 Sep 2021 Anna Paola Muntoni, Andrea Pagnani, Martin Weigt, Francesco Zamponi

Boltzmann machines are energy-based models that have been shown to provide an accurate statistical description of domains of evolutionary-related protein and RNA families.

BIG-bench Machine Learning

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.

Sparse generative modeling via parameter-reduction of Boltzmann machines: application to protein-sequence families

no code implementations23 Nov 2020 Pierre Barrat-Charlaix, Anna Paola Muntoni, Kai Shimagaki, Martin Weigt, Francesco Zamponi

For example, pairwise Potts models (PM), which are instances of the BM class, provide accurate statistical models of families of evolutionarily related protein sequences.

Aligning biological sequences by exploiting residue conservation and coevolution

no code implementations18 May 2020 Anna Paola Muntoni, Andrea Pagnani, Martin Weigt, Francesco Zamponi

Here, we present DCAlign, an efficient alignment algorithm based on an approximate message-passing strategy, which is able to overcome the limitations of profile models, to include coevolution among positions in a general way, and to be therefore universally applicable to protein- and RNA-sequence alignment without the need of using complementary structural information.

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

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