Results 1 to 10 of about 1,715,934 (212)

Bayesian Random Tomography of Particle Systems

open access: yesFrontiers in Molecular Biosciences, 2021
Random tomography is a common problem in imaging science and refers to the task of reconstructing a three-dimensional volume from two-dimensional projection images acquired in unknown random directions. We present a Bayesian approach to random tomography.
Nima Vakili   +2 more
doaj   +1 more source

Robust pathway sampling in phenotype prediction. Application to triple negative breast cancer

open access: yesBMC Bioinformatics, 2020
Background Phenotype prediction problems are usually considered ill-posed, as the amount of samples is very limited with respect to the scrutinized genetic probes.
Ana Cernea   +7 more
doaj   +1 more source

Prediction of Protein Tertiary Structure via Regularized Template Classification Techniques

open access: yesMolecules, 2020
We discuss the use of the regularized linear discriminant analysis (LDA) as a model reduction technique combined with particle swarm optimization (PSO) in protein tertiary structure prediction, followed by structure refinement based on singular value ...
Óscar Álvarez-Machancoses   +2 more
doaj   +1 more source

The group inverse of subdivision networks [PDF]

open access: yes, 2016
In this paper, given a network and a subdivision of it, we show how the Group Inverse of the subdivision network can be related to the Group Inverse of initial given network.
Carmona Mejías, Ángeles   +2 more
core   +2 more sources

On the graph condition regarding the $F$-inverse cover problem [PDF]

open access: yes, 2015
In their paper titled "On $F$-inverse covers of inverse monoids", Auinger and Szendrei have shown that every finite inverse monoid has an $F$-inverse cover if and only if each finite graph admits a locally finite group variety with a certain property. We
Szakács, Nóra
core   +2 more sources

A combinatorial expression for the group inverse of symmetric M-matrices

open access: yesSpecial Matrices, 2021
By using combinatorial techniques, we obtain an extension of the matrix-tree theorem for general symmetric M-matrices with no restrictions, this means that we do not have to assume the diagonally dominance hypothesis.
Carmona A., Encinas A.M., Mitjana M.
doaj   +1 more source

Matrix Analysis for Continuous-Time Markov Chains

open access: yesSpecial Matrices, 2021
Continuous-time Markov chains have transition matrices that vary continuously in time. Classical theory of nonnegative matrices, M-matrices and matrix exponentials is used in the literature to study their dynamics, probability distributions and other ...
Le Hung V., Tsatsomeros M. J.
doaj   +1 more source

Robust Prediction of Single and Multiple Point Protein Mutations Stability Changes

open access: yesBiomolecules, 2019
Accurate prediction of protein stability changes resulting from amino acid substitutions is of utmost importance in medicine to better understand which mutations are deleterious, leading to diseases, and which are neutral.
Óscar Álvarez-Machancoses   +3 more
doaj   +1 more source

Integrable models for shallow water with energy dependent spectral problems [PDF]

open access: yes, 2012
We study the inverse problem for the so-called operators with energy depending potentials. In particular, we study spectral operators with quadratic dependance on the spectral parameter.
Ivanov, Rossen I., Lyons, Tony
core   +3 more sources

A class of singular Ro-matrices and extensions to semidefinite linear complementarity problems [PDF]

open access: yesYugoslav Journal of Operations Research, 2013
For ARnxn and qRn, the linear complementarity problem LCP(A, q) is to determine if there is xRn such that x ≥ 0; y = Ax + q ≥ 0 and xT y = 0. Such an x is called a solution of LCP(A,q).
Sivakumar K.C.
doaj   +1 more source

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