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Kernel Density Estimation: a novel tool for visualising training intensity distribution in biathlon [PDF]

open access: yesFrontiers in Sports and Active Living
PurposeThis study introduces two-dimensional (2D) Kernel Density Estimation (KDE) plots as a novel tool for visualising Training Intensity Distribution (TID) in biathlon. The goal was to assess how KDE plots, alongside traditional training metrics, might
Craig A. Staunton   +7 more
doaj   +2 more sources

DEMANDE: Density Matrix Neural Density Estimation

open access: yesIEEE Access, 2023
Density estimation is a fundamental task in statistics and machine learning that aims to estimate, from a set of samples, the probability density function of the distribution that generated them.
Joseph A. Gallego-Mejia   +1 more
doaj   +1 more source

Scale and Background Aware Asymmetric Bilateral Network for Unconstrained Image Crowd Counting

open access: yesMathematics, 2022
This paper attacks the two challenging problems of image-based crowd counting, that is, scale variation and complex background. To that end, we present a novel crowd counting method, called the Scale and Background aware Asymmetric Bilateral Network ...
Gang Lv   +4 more
doaj   +1 more source

Tree Density Estimation

open access: yesIEEE Transactions on Information Theory, 2023
We study the problem of estimating the density $f(\boldsymbol x)$ of a random vector ${\boldsymbol X}$ in $\mathbb R^d$. For a spanning tree $T$ defined on the vertex set $\{1,\dots ,d\}$, the tree density $f_{T}$ is a product of bivariate conditional densities. An optimal spanning tree minimizes the Kullback-Leibler divergence between $f$ and $f_{T}$.
Laszlo Gyorfi   +2 more
openaire   +2 more sources

Camera trap distance sampling for terrestrial mammal population monitoring: lessons learnt from a UK case study

open access: yesRemote Sensing in Ecology and Conservation, 2022
Accurate and precise density estimates are crucial for effective species management and conservation. However, efficient monitoring of mammal densities over large spatial and temporal scales is challenging.
Samantha S. Mason   +5 more
doaj   +1 more source

Density-Difference Estimation [PDF]

open access: yesNeural Computation, 2013
We address the problem of estimating the difference between two probability densities. A naive approach is a two-step procedure of first estimating two densities separately and then computing their difference. However, this procedure does not necessarily work well because the first step is performed without regard to the second step, and thus a small ...
Sugiyama, Masashi   +5 more
openaire   +4 more sources

BNPmix: An R Package for Bayesian Nonparametric Modeling via Pitman-Yor Mixtures

open access: yesJournal of Statistical Software, 2021
BNPmix is an R package for Bayesian nonparametric multivariate density estimation, clustering, and regression, using Pitman-Yor mixture models, a flexible and robust generalization of the popular class of Dirichlet process mixture models.
Riccardo Corradin   +2 more
doaj   +1 more source

Density Estimates as Representations of Agricultural Fields for Remote Sensing-Based Monitoring of Tillage and Vegetation Cover

open access: yesApplied Sciences, 2022
We consider the use of remote sensing for large-scale monitoring of agricultural land use, focusing on classification of tillage and vegetation cover for individual field parcels across large spatial areas.
Markku Luotamo   +2 more
doaj   +1 more source

On Conditional Density Estimation [PDF]

open access: yesStatistica Neerlandica, 2002
With the aim of mitigating the possible problem of negativity in the estimation of the conditional density function, we introduce a so‐called re‐weighted Nadaraya‐Watson (RNW) estimator. The proposed RNW estimator is constructed by a slight modification of the well‐known Nadaraya‐Watson smoother. With a detailed asymptotic analysis, we demonstrate that
de Gooijer, J.G., Zerom Godefay, D.
openaire   +3 more sources

Improved Initialization of the EM Algorithm for Mixture Model Parameter Estimation

open access: yesMathematics, 2020
A commonly used tool for estimating the parameters of a mixture model is the Expectation−Maximization (EM) algorithm, which is an iterative procedure that can serve as a maximum-likelihood estimator.
Branislav Panić   +2 more
doaj   +1 more source

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