Results 1 to 10 of about 4,333,581 (301)

Shifting foundations and metrics for golden‐cheeked warbler recovery

open access: yesWildlife Society Bulletin, 2012
Using the golden‐cheeked warbler (Setophaga chrysoparia) as a case study, this paper discusses what lessons can be learned from the process of the emergency listing and subsequent development of the recovery plan.
Jeff S. Hatfield   +2 more
doaj   +1 more source

Sheep Counting Method Based on Multiscale Module Deep Neural Network

open access: yesIEEE Access, 2022
Due to the uneven distribution and large scale change of sheep in the pasture, it is not conducive to the counting and statistics of sheep in animal husbandry.
Jianming Xu   +3 more
doaj   +1 more source

Fuzzy Histograms and Density Estimation [PDF]

open access: yes, 2007
Estimateur de densité de probabilité basé sur les histogrammes flous, avec théorème et preuve de convergence pour le critère MSE.
Loquin, Kevin, Strauss, Olivier
openaire   +3 more sources

Cascaded Multi-Task Learning of Head Segmentation and Density Regression for RGBD Crowd Counting

open access: yesIEEE Access, 2020
In this paper we propose a novel regression based RGBD crowd counting method. Compared with previous RGBD crowd counting methods which mainly exploit depth cue to facilitate person/head detection, our approach adopts density map regression and is more ...
Desen Zhou, Qian He
doaj   +1 more source

The Density of the Maximum Likelihood Estimator

open access: yesEconometrica, 1999
In this paper we derive an expression for the exact density of the maximum likelihood estimator (MLE) in the case where the MLE is uniquely defined at each point in the sample space by the vanishing of the score vector.
Hillier, G, Armstrong, M
openaire   +2 more sources

Independent Density Estimation

open access: yesCoRR
Large-scale Vision-Language models have achieved remarkable results in various domains, such as image captioning and conditioned image generation. Nevertheless, these models still encounter difficulties in achieving human-like compositional generalization. In this study, we propose a new method called Independent Density Estimation (IDE) to tackle this
Jiahao Liu, Senhao Cao
openaire   +2 more sources

A comparison of density estimation methods for monitoring marked and unmarked animal populations

open access: yesEcosphere, 2022
Effective monitoring of wildlife populations forms the foundation of modern‐day conservation biology. Without reliable estimates of population size, it is not possible to determine population trends, a key requirement in determining species status under ...
Joshua P. Twining   +8 more
doaj   +1 more source

The Estimation of Spectral Densities

open access: yesJournal of the Royal Statistical Society Series B: Statistical Methodology, 1962
SUMMARY A method of estimating spectral densities is developed which uses the data explicitly to help determine the best smoothing procedure. Two techniques are discussed. The first involves polynomial approximations, the second is an interpolation technique which is useful when a limited number of autocorrelations is available.
openaire   +2 more sources

logcondens: Computations Related to Univariate Log-Concave Density Estimation

open access: yesJournal of Statistical Software, 2011
Maximum likelihood estimation of a log-concave density has attracted considerable attention over the last few years. Several algorithms have been proposed to estimate such a density. Two of those algorithms, an iterative convex minorant and an active set
Lutz Dümbgen, Kaspar Rufibach
doaj  

Learning of Counting Crowded Birds of Various Scales via Novel Density Activation Maps

open access: yesIEEE Access, 2020
The previous counting methods trained by the density map regression scheme fail to precisely count the number of birds in crowded bird images of various scales. This is due to the coarseness of the manually created target density maps.
Saehun Kim, Munchurl Kim
doaj   +1 more source

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