Results 81 to 90 of about 29,218,928 (220)

Correlation‐guided multi‐object tracking with correlation feature transfer

open access: yesIET Computer Vision, 2019
Here, the authors propose a correlation‐guided Monte Carlo Markov chain (MCMC) solver to promote the efficiency for tracking multiple objects under recursive Bayesian filtering framework.
Jiatong Li, Yanjie Zhao, Zhiguo Jiang
doaj   +1 more source

Precision of methods for calculating identity-by-descent matrices using multiple markers

open access: yesGenetics Selection Evolution, 2002
A rapid, deterministic method (DET) based on a recursive algorithm and a stochastic method based on Markov Chain Monte Carlo (MCMC) for calculating identity-by-descent (IBD) matrices conditional on multiple markers were compared using stochastic ...
Sørensen Anders   +3 more
doaj   +1 more source

A splitting method to reduce MCMC variance

open access: yes, 2020
We explore whether splitting and killing methods can improve the accuracy of Markov chain Monte Carlo (MCMC) estimates of rare event probabilities, and we make three contributions. First, we prove that "weighted ensemble" is the only splitting and killing method that provides asymptotically consistent estimates when combined with MCMC. Second, we prove
Webber, Robert J.   +2 more
openaire   +2 more sources

Phase randomisation: a convergence diagnostic test for MCMC [PDF]

open access: yes
Most MCMC users address the convergence problem by applying diagnostic tools to the output produced by running their samplers. Potentially useful diagnostics may be borrowed from diverse areas such as time series.
Darfiana Nur   +2 more
core   +1 more source

Using MCMC methods in some application problems

open access: yesInternational Journal of Scientific World, 2014
MCMC methods are very important tools for estimating unknown parameters in Bayesian models. Especially in the case of high dimensions. Gaussian mixture model is one of the applications of estimating hyper parameters by MCMC method. Keywords : Gibbs Sampling, Slice Sampling, Metropolis-Hastings Algorithm, Gaussian, Mixture Model.
Parvin Azhdari   +2 more
openaire   +2 more sources

Dynamical Sampling with Langevin Normalization Flows

open access: yesEntropy, 2019
In Bayesian machine learning, sampling methods provide the asymptotically unbiased estimation for the inference of the complex probability distributions, where Markov chain Monte Carlo (MCMC) is one of the most popular sampling methods. However, MCMC can
Minghao Gu, Shiliang Sun, Yan Liu
doaj   +1 more source

Gradient boosting: A computationally efficient alternative to Markov chain Monte Carlo sampling for fitting large Bayesian spatio-temporal binomial regression models

open access: yesInfectious Disease Modelling
Disease forecasting and surveillance often involve fitting models to a tremendous volume of historical testing data collected over space and time. Bayesian spatio-temporal regression models fit with Markov chain Monte Carlo (MCMC) methods are commonly ...
Rongjie Huang   +5 more
doaj   +1 more source

A Robust Non-Gaussian Data Assimilation Method for Highly Non-Linear Models

open access: yesAtmosphere, 2018
In this paper, we propose an efficient EnKF implementation for non-Gaussian data assimilation based on Gaussian Mixture Models and Markov-Chain-Monte-Carlo (MCMC) methods.
Elias D. Nino-Ruiz   +2 more
doaj   +1 more source

A Markov Chain Monte Carlo Procedure for Efficient Bayesian Inference on the Phase-Type Aging Model

open access: yesStats
The phase-type aging model (PTAM) belongs to a class of Coxian-type Markovian models that can provide a quantitative description of well-known aging characteristics that are part of a genetically determined, progressive, and irreversible process.
Cong Nie   +3 more
doaj   +1 more source

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