Results 41 to 50 of about 140,664 (140)

Categorical data analysis using a skewed Weibull regression model

open access: yes, 2017
In this paper, we present a Weibull link (skewed) model for categorical response data arising from binomial as well as multinomial model. We show that, for such types of categorical data, the most commonly used models (logit, probit and complementary log-
Caron, Renault   +3 more
core   +2 more sources

The Efficiency of Missing at Random Planned Missing Designs

open access: yesMathematics
Planned Missing Designs (PMDs) allow for different sets or patterns of variables to be collected from sample units. While the typical motivation for PMDs is to manage respondent burden, they can also reduce data collection costs and provide flexibility ...
David G. Steel, James Chipperfield
doaj   +1 more source

Another approach to the evaluation of a certain multivariate compound distribution

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2016
In this work, we consider the multivariate aggregate model introduced in [11], model that takes into account the case when different types of claims affect in the same time an insurance portfolio under some specific assumptions related to the number of ...
Robe-Voinea Elena-Gratiela   +1 more
doaj   +1 more source

Computing the exact distributions of some functions of the ordered multinomial counts: maximum, minimum, range and sums of order statistics [PDF]

open access: yesRoyal Society Open Science, 2019
Starting from seminal neglected work by Rappeport (Rappeport 1968 Algorithms and computational procedures for the application of order statistics to queuing problems.
Marco Bonetti   +2 more
doaj   +1 more source

A perturbative probabilistic approach to quantum many-body systems

open access: yes, 2013
In the probabilistic approach to quantum many-body systems, the ground-state energy is the solution of a nonlinear scalar equation written either as a cumulant expansion or as an expectation with respect to a probability distribution of the potential and
Di Stefano, Andrea   +2 more
core   +1 more source

Multinomial Logit Models with Continuous and Discrete Individual Heterogeneity in R: The gmnl Package

open access: yesJournal of Statistical Software, 2017
This paper introduces the package gmnl in R for estimation of multinomial logit models with unobserved heterogeneity across individuals for cross-sectional and panel (longitudinal) data.
Mauricio Sarrias, Ricardo Daziano
doaj   +1 more source

Exact Tests for Two-Way Contingency Tables with Structural Zeros

open access: yesJournal of Statistical Software, 2008
Fisher's exact test, named for Sir Ronald Aylmer Fisher, tests contingency tables for homogeneity of proportion. This paper discusses a generalization of Fisher's exact test for the case where some of the table entries are constrained to be zero.
Luke J. West, Robin K. S. Hankin
doaj  

Complete monotonicity of multinomial probabilities and its application to Bernstein estimators on the simplex

open access: yes, 2018
Let $d\in \mathbb{N}$ and let $\gamma_i\in [0,\infty)$, $x_i\in (0,1)$ be such that $\sum_{i=1}^{d+1} \gamma_i = M\in (0,\infty)$ and $\sum_{i=1}^{d+1} x_i = 1$.
Ouimet, Frédéric
core   +1 more source

Characterizations of multinomial distributions based on conditional distributions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1996
Several characterizations of the joint multinomial distribution of two discrete random vectors are derived assuming conditional multinomial distributions.
Khoan T. Dinh   +2 more
doaj   +1 more source

Bayesian sequential estimation of the proportion of damage in maize seeds

open access: yesScientia Agricola
Sampling is an essential step in estimating a parameter: thus, cost and time associated to this step should be minimized. Sequential sampling is characterized by using samples of variable sizes given as a function of observations, and sequential sampling
Isabela da Silva Lima   +2 more
doaj   +1 more source

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