The Kullback–Leibler divergence between lattice Gaussian distributions

F Nielsen - Journal of the Indian Institute of Science, 2022 - Springer
A lattice Gaussian distribution of given mean and covariance matrix is a discrete distribution
supported on a lattice maximizing Shannon's entropy under these mean and covariance …

The Fisher–Rao distance between multivariate normal distributions: Special cases, bounds and applications

J Pinele, JE Strapasson, SIR Costa - Entropy, 2020 - mdpi.com
The Fisher–Rao distance is a measure of dissimilarity between probability distributions,
which, under certain regularity conditions of the statistical model, is up to a scaling factor the …

Fast approximations of the Jeffreys divergence between univariate Gaussian mixtures via mixture conversions to exponential-polynomial distributions

F Nielsen - Entropy, 2021 - mdpi.com
The Jeffreys divergence is a renown arithmetic symmetrization of the oriented Kullback–
Leibler divergence broadly used in information sciences. Since the Jeffreys divergence …

Region-based change detection for polarimetric SAR images using Wishart mixture models

W Yang, X Yang, T Yan, H Song… - IEEE Transactions on …, 2016 - ieeexplore.ieee.org
The change detection of polarimetric synthetic aperture radar (PolSAR) images is a
longstanding and challenging task, not only because of the speckle issue but also due to the …

Kernel regression estimation of fiber orientation mixtures in diffusion MRI

RP Cabeen, ME Bastin, DH Laidlaw - Neuroimage, 2016 - Elsevier
We present and evaluate a method for kernel regression estimation of fiber orientations and
associated volume fractions for diffusion MR tractography and population-based atlas …

Joint color-spatial-directional clustering and region merging (JCSD-RM) for unsupervised RGB-D image segmentation

MA Hasnat, O Alata, A Tremeau - IEEE transactions on pattern …, 2015 - ieeexplore.ieee.org
Recent advances in depth imaging sensors provide easy access to the synchronized depth
with color, called RGB-D image. In this paper, we propose an unsupervised method for …

k-MLE: A fast algorithm for learning statistical mixture models

F Nielsen - 2012 IEEE international conference on acoustics …, 2012 - ieeexplore.ieee.org
We present a fast and generic algorithm, k-MLE, for learning statistical mixture models using
maximum likelihood estimators. We prove theoretically that k-MLE is dually equivalent to a …

Score distributions for pseudo relevance feedback

J Parapar, MA Presedo-Quindimil, A Barreiro - Information Sciences, 2014 - Elsevier
Abstract Relevance-Based Language Models, commonly known as Relevance Models, are
successful approaches to explicitly introduce the concept of relevance in the statistical …

Automated CT-based segmentation and quantification of total intracranial volume

C Aguilar, K Edholm, A Simmons, L Cavallin… - European …, 2015 - Springer
Objectives To develop an algorithm to segment and obtain an estimate of total intracranial
volume (tICV) from computed tomography (CT) images. Materials and methods Thirty-six CT …

A Gaussian mixture model for dynamic detection of abnormal behavior in smartphone applications

A El Attar, R Khatoun… - 2014 global information …, 2014 - ieeexplore.ieee.org
Nowadays smartphones get increasingly popular which also attracted hackers. With the
increasing capabilities of such phones, more and more malicious softwares targeting these …