Results 1 to 10 of about 121,868 (329)

Smoothed Dirichlet Distribution

Journal of Statistical Theory and Applications (JSTA), 2023
When the cells are ordinal in the multinomial distribution, i.e., when cells have a natural ordering, guaranteeing that the borrowing information among neighboring cells makes sense conceptually.
Lahiru Wickramasinghe, Alexandre Leblanc, Saman Muthukumarana   +2 more
doaj   +2 more sources

A truncated bivariate inverted Dirichlet distribution

Statistica, 2013
A truncated version of the bivariate inverted dirichlet distribution is introduced. Unlike the inverted dirichlet distribution, this possesses finite moments of all orders and could therefore be a better model for certain practical situations.
Saralees Nadarajah
doaj   +2 more sources

A new statistical method to analyze Morris Water Maze data using Dirichlet distribution [version 2; peer review: 2 approved] [PDF]

F1000Research, 2019
The Morris Water Maze (MWM) is a behavioral test widely used in the field of neuroscience to evaluate spatial learning memory of rodents. However, the interpretation of results is often impaired by the common use of statistical tests based on ...
Marianne Maugard, Cyrille Doux, Gilles Bonvento   +2 more
doaj   +2 more sources

BMDD: A probabilistic framework for accurate imputation of zero-inflated microbiome sequencing data. [PDF]

PLoS Computational Biology
Microbiome sequencing data are inherently sparse and compositional, with excessive zeros arising from biological absence or insufficient sampling. These zeros pose significant challenges for downstream analyses, particularly those that require log ...
Huijuan Zhou, Jun Chen, Xianyang Zhang
doaj   +2 more sources

A Generalization of the Dirichlet Distribution

Journal of Statistical Software, 2010
This paper discusses a generalization of the Dirichlet distribution, the ‘hyperdirichlet’, in which various types of incomplete observations may be incorporated.
Robin K. S. Hankin
doaj   +2 more sources

Enhancing trust in machines integration with Dirichlet distribution and self-sovereign identity

Array
In critical IoT ecosystems, where autonomous devices operate without human oversight, security hinges on robust identity management as the foundation of authentication.
Joel Herve Mboussam Emati, Vianney Kengne Tchendji, Mounirah Djam-Doudou   +2 more
doaj   +2 more sources

Assessing Multinomial Distributions with a Bayesian Approach

Mathematics, 2023
This paper introduces a unified Bayesian approach for testing various hypotheses related to multinomial distributions. The method calculates the Kullback–Leibler divergence between two specified multinomial distributions, followed by comparing the change
Luai Al-Labadi, Petru Ciur, Milutin Dimovic, Kyuson Lim   +3 more
doaj   +1 more source

Compositional Data Modeling through Dirichlet Innovations

Mathematics, 2021
The Dirichlet distribution is a well-known candidate in modeling compositional data sets. However, in the presence of outliers, the Dirichlet distribution fails to model such data sets, making other model extensions necessary.
Seitebaleng Makgai, Andriette Bekker, Mohammad Arashi   +2 more
doaj   +1 more source

Parameter Estimation of the Dirichlet Distribution Based on Entropy

Axioms, 2023
The Dirichlet distribution as a multivariate generalization of the beta distribution is especially important for modeling categorical distributions. Hence, its applications vary within a wide range from modeling cell probabilities of contingency tables ...
Büşra Şahin, Atıf Ahmet Evren, Elif Tuna, Zehra Zeynep Şahinbaşoğlu, Erhan Ustaoğlu   +4 more
doaj   +1 more source

Some recent advances in random walks and random environments* [PDF]

ESAIM: Proceedings and Surveys, 2023
Recent contributions to random walks in random environments and related topics are presented. We focus on non parametric estimation for one dimensional random walks in random environment and on the Dirichlet distribution on decomposable graphs.
Devulder Alexis, Diel Roland, Zeng Xiaolin   +2 more
doaj   +1 more source