Articolo in rivista

Wavelet Bayesian Block Shrinkage via mixture of Normal-Inverse-Gamma

In this paper we propose a non-linear block shrinkage method in the wavelet domain for estimating an unknown function in the presence of Gaussian noise. This shrinkage utilizes an empirical Bayesian blocking approach that accounts for the sparseness of the representation of the unknown function…

A method for automated pathogenic content estimation with application to rheumatoid arthritis

Background: Sequencing technologies applied to mammals' microbiomes have revolutionized our understanding of health and disease. Hence, to assess diseases' progression as well as therapies longterm effects, the impact of maladies and drugs on the gut-intestinal (GI) microbiome has to be evaluated.…

Acceleration of leukocytes' epigenetic age as an early tumor- and sex-specific marker of breast and colorectal cancer

Changes in blood epigenetic age have been associated with several pathological conditions and have recently been described to anticipate cancer development. In this work, we analyze a publicly available leukocytes methylation dataset to evaluate the relation between DNA methylation age and the…

Semi-transparent Blotches Removal from Sepia Images Exploiting Visibility Law

Effects of collisions against thermal impurities in the dynamics

The security mortgage valuation in a stochastic perspective

The reverse mortgage market has been expanding rapidly in developed economies in recent years. Reverse mortgages provide an alternative source of funding for retirement income and health care costs. Increase in life expectancies and decrease in the real income at retirement continue to worry those…

Valuation and Risk Assessment of a Portfolio of Variable Annuities: A Vector Autoregression Approach

This paper focuses on assessing the financial position of an insurer issuing a portfolio of Variable Annuities (VAs). Two multivariate models for the underlying and the interest rate are considered. The first model uses a single total rate of return for the basket of assets. The second one, jointly…

Duality in matrix lattice Boltzmann models

Viscoelastic Fizhugh-Nagumo models

An extended Fitzhugh-Nagumo model including linear viscoelasticity is derived in general and studied in detail in the one-dimensional case. The equations of the theory are numerically integrated in two situations: (i) a free insulated fiber activated by an initial Gaussian distribution of action…

Learning binary undirected graph in low dimensional regime

Given a random sample drawn from a Multivariate Bernoulli Variable (MBV), we consider the problem of estimating the structure of the undirected graph for which the distribution is pairwise Markov and the parameters' vector of its exponential form. We propose a simple method that provides a closed…