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2,192 Results Found

  • Article
  • Open Access
5 Citations
2,928 Views
9 Pages

Some Results on the Truncated Multivariate Skew-Normal Distribution

  • Raúl Alejandro Morán-Vásquez,
  • Duván Humberto Cataño Salazar and
  • Daya K. Nagar

9 May 2022

The multivariate skew-normal distribution is useful for modeling departures from normality in data through parameters controlling skewness. Recently, several extensions of this distribution have been proposed in the statistical literature, among whic...

  • Article
  • Open Access
719 Views
27 Pages

Multivariate Modified Dugum Distribution and Its Applications

  • Naelah Alghufily,
  • Khalaf S. Sultan and
  • Hossam M. M. Radwan

15 May 2025

The modified Dagum distribution is a highly versatile statistical model, and it is included in several important parametric families of distributions, with applications, such as economics and public health. In this paper, we introduce a multivariate...

  • Article
  • Open Access
3 Citations
2,572 Views
14 Pages

Some Statistical Aspects of the Truncated Multivariate Skew-t Distribution

  • Raúl Alejandro Morán-Vásquez,
  • Edwin Zarrazola and
  • Daya K. Nagar

6 August 2022

The multivariate skew-t distribution plays an important role in statistics since it combines skewness with heavy tails, a very common feature in real-world data. A generalization of this distribution is the truncated multivariate skew-t distribution...

  • Article
  • Open Access
3 Citations
1,955 Views
15 Pages

Quantile-Based Multivariate Log-Normal Distribution

  • Raúl Alejandro Morán-Vásquez,
  • Alejandro Roldán-Correa and
  • Daya K. Nagar

31 July 2023

We introduce a quantile-based multivariate log-normal distribution, providing a new multivariate skewed distribution with positive support. The parameters of this distribution are interpretable in terms of quantiles of marginal distributions and asso...

  • Article
  • Open Access
2 Citations
2,887 Views
15 Pages

4 December 2023

A multivariate folded normal distribution is a distribution of the absolute value of a Gaussian random vector. In this paper, we provide the marginal and conditional distributions of the multivariate folded normal distribution, and also prove that in...

  • Article
  • Open Access
2 Citations
2,509 Views
21 Pages

The Multivariate Skewed Log-Birnbaum–Saunders Distribution and Its Associated Regression Model

  • Guillermo Martínez-Flórez,
  • Sandra Vergara-Cardozo,
  • Roger Tovar-Falón and
  • Luisa Rodriguez-Quevedo

22 February 2023

In this article, a multivariate extension of the unit-sinh-normal (USHN) distribution is presented. The new distribution, which is obtained from the conditionally specified distributions methodology, is absolutely continuous, and its marginal distrib...

  • Article
  • Open Access
9 Citations
4,900 Views
20 Pages

12 August 2018

One way to formulate a multivariate probability distribution with dependent univariate margins distributed gamma is by using the closure under convolutions property. This direction yields an additive background risk model, and it has been very well-s...

  • Article
  • Open Access
26 Citations
10,309 Views
15 Pages

3 September 2013

The goal of this paper is to show how to derive the multivariate Weibull probability density function from the multivariate Standard Normal one and to show its applications. Having Weibull distribution parameters and a correlation matrix as input dat...

  • Article
  • Open Access
4 Citations
2,952 Views
8 Pages

22 September 2019

The sampling distribution of the total correlation (TC) for a d-dimensional standardized multivariate Gaussian random variable with an identity covariance matrix is derived. It is shown to be the distribution of a sum of generalized beta random varia...

  • Article
  • Open Access
2 Citations
2,992 Views
14 Pages

26 August 2018

With the purpose of introducing dependence between different types of claims, multivariate collective models have recently gained a lot of attention. However, when it comes to the evaluation of the corresponding compound distribution, the problems in...

  • Article
  • Open Access
3 Citations
2,678 Views
12 Pages

Genz and Mendell-Elston Estimation of the High-Dimensional Multivariate Normal Distribution

  • Lucy Blondell,
  • Mark Z. Kos,
  • John Blangero and
  • Harald H. H. Göring

14 October 2021

Statistical analysis of multinomial data in complex datasets often requires estimation of the multivariate normal (mvn) distribution for models in which the dimensionality can easily reach 10–1000 and higher. Few algorithms for estimating the mvn dis...

  • Article
  • Open Access
27 Citations
6,153 Views
31 Pages

9 February 2022

Loading data efficiently from classical memories to quantum computers is a key challenge of noisy intermediate-scale quantum computers. Such a problem can be addressed through quantum generative adversarial networks (qGANs), which are noise tolerant...

  • Article
  • Open Access
8 Citations
3,272 Views
29 Pages

Multivariate Scale-Mixed Stable Distributions and Related Limit Theorems

  • Yury Khokhlov,
  • Victor Korolev and
  • Alexander Zeifman

In the paper, multivariate probability distributions are considered that are representable as scale mixtures of multivariate stable distributions. Multivariate analogs of the Mittag–Leffler distribution are introduced. Some properties of these...

  • Feature Paper
  • Article
  • Open Access
2 Citations
3,387 Views
20 Pages

Cumulants of Multivariate Symmetric and Skew Symmetric Distributions

  • Sreenivasa Rao Jammalamadaka,
  • Emanuele Taufer and
  • Gyorgy H. Terdik

29 July 2021

This paper provides a systematic and comprehensive treatment for obtaining general expressions of any order, for the moments and cumulants of spherically and elliptically symmetric multivariate distributions; results for the case of multivariate t-di...

  • Feature Paper
  • Article
  • Open Access
10 Citations
4,521 Views
21 Pages

Multivariate Classes of GB2 Distributions with Applications

  • José María Sarabia,
  • Vanesa Jordá,
  • Faustino Prieto and
  • Montserrat Guillén

31 December 2020

The general beta of the second kind distribution (GB2) is a flexible distribution which includes several relevant parametric families of distributions. This distribution has important applications in earnings and income distributions, finance and ins...

  • Article
  • Open Access
57 Citations
6,553 Views
17 Pages

6 June 2018

Mobile activity recognition is significant to the development of human-centric pervasive applications including elderly care, personalized recommendations, etc. Nevertheless, the distribution of inertial sensor data can be influenced to a great exten...

  • Article
  • Open Access
11 Citations
3,048 Views
12 Pages

26 April 2021

In this paper, we propose a novel data augmentation technique employing multivariate Gaussian distribution (DA-MGD) for neural network (NN)-based blood pressure (BP) estimation, which incorporates the relationship between the features in a multi-dime...

  • Article
  • Open Access
3 Citations
7,525 Views
15 Pages

6 April 2011

In the present paper, we propose a large sample asymptotic approximation for the sampling and posterior distributions of differential entropy when the sample is composed of independent and identically distributed realization of a multivariate normal...

  • Article
  • Open Access
3 Citations
3,752 Views
17 Pages

Multivariate Skew-Power-Normal Distributions: Properties and Associated Inference

  • Guillermo Martínez-Flórez,
  • Artur J. Lemonte and
  • Hugo S. Salinas

12 December 2019

The univariate power-normal distribution is quite useful for modeling many types of real data. On the other hand, multivariate extensions of this univariate distribution are not common in the statistic literature, mainly skewed multivariate extension...

  • Article
  • Open Access
5 Citations
3,614 Views
22 Pages

11 June 2021

Symmetric elliptical distributions have been intensively used in data modeling and robustness studies. The area of applications was considerably widened after transforming elliptical distributions into the skew elliptical ones that preserve several g...

  • Article
  • Open Access
2 Citations
1,750 Views
16 Pages

18 August 2023

In this article, we derive a closed-form expression for computing the probabilities of p-dimensional rectangles by means of a multivariate skew-normal distribution. We use a stochastic representation of the multivariate skew-normal/independent distri...

  • Article
  • Open Access
3 Citations
3,034 Views
42 Pages

9 March 2022

This paper is concerned with the multivariate extended skew-normal [MESN] and multivariate extended skew-Student [MEST] distributions, that is, distributions in which the location parameters of the underlying truncated distributions are not zero. The...

  • Article
  • Open Access
1,896 Views
14 Pages

26 December 2022

In this article, we introduce and study a new stochastic order of multivariate distributions, namely, the conditional likelihood ratio order. The proposed order and other stochastic orders are analyzed in the case of a bivariate exponential distribut...

  • Article
  • Open Access
2,730 Views
17 Pages

18 June 2019

With the increasing complexity of the active distribution network (ADN) due to distributed generation (DG) integration, together with the electricity market evolution, the traditional ADN is divided into multiple areas to operate independently. Due t...

  • Article
  • Open Access
6 Citations
5,323 Views
19 Pages

A Flexible Multivariate Distribution for Correlated Count Data

  • Kimberly F. Sellers,
  • Tong Li,
  • Yixuan Wu and
  • Narayanaswamy Balakrishnan

15 April 2021

Multivariate count data are often modeled via a multivariate Poisson distribution, but it contains an underlying, constraining assumption of data equi-dispersion (where its variance equals its mean). Real data are oftentimes over-dispersed and, as su...

  • Article
  • Open Access
4 Citations
6,078 Views
21 Pages

26 November 2009

We propose and study a general class of tests for group symmetry of a multivariate distribution, which encompasses different types of symmetry, such as ellipsoidal and permutation symmetries among others. Our approach is based on supremum norms of sp...

  • Review
  • Open Access
20 Citations
5,502 Views
25 Pages

Multivariate Birnbaum-Saunders Distributions: Modelling and Applications

  • Robert G. Aykroyd,
  • Víctor Leiva and
  • Carolina Marchant

8 March 2018

Since its origins and numerous applications in material science, the Birnbaum–Saunders family of distributions has now found widespread uses in some areas of the applied sciences such as agriculture, environment and medicine, as well as in quality co...

  • Article
  • Open Access
26 Citations
10,871 Views
24 Pages

1 April 2020

The Fisher–Rao distance is a measure of dissimilarity between probability distributions, which, under certain regularity conditions of the statistical model, is up to a scaling factor the unique Riemannian metric invariant under Markov morphisms. It...

  • Proceeding Paper
  • Open Access
3 Citations
2,651 Views
12 Pages

Bayesian Robust Multivariate Time Series Analysis in Nonlinear Models with Autoregressive and t-Distributed Errors

  • Alexander Dorndorf,
  • Boris Kargoll,
  • Jens-André Paffenholz and
  • Hamza Alkhatib

Many geodetic measurement data can be modelled as a multivariate time series consisting of a deterministic (“functional”) model describing the trend, and a stochastic model of the correlated noise. These data are also often affected by outliers and t...

  • Article
  • Open Access
14 Citations
3,089 Views
13 Pages

1 March 2021

A multivariate INAR(1) regression model based on the Sarmanov distribution is proposed for modelling claim counts from an automobile insurance contract with different types of coverage. The correlation between claims from different coverage types is...

  • Article
  • Open Access
1 Citations
2,609 Views
28 Pages

Vine Copula-Based Multivariate Distribution of Rainfall Intensity, Wind Speed, and Wind Direction for Optimizing Qatari Meteorological Stations

  • Hassan Qasem,
  • Niels-Erik Joergensen,
  • Ataur Rahman,
  • Husam Abdullah Samman,
  • Sharouq Al Malki and
  • Abdulrahman Saleh Al Ansari

27 April 2024

This study employs copula functions to establish the dependency structure of the joint distribution among rainfall intensity, wind speed, and wind direction in Qatar. Based on a Vine Copula, the trivariate distribution between rainfall intensity, win...

  • Communication
  • Open Access
12 Citations
5,867 Views
24 Pages

7 August 2023

In this paper, we provide geometric insights with visualization into the multivariate Gaussian distribution and its entropy and mutual information. In order to develop the multivariate Gaussian distribution with entropy and mutual information, severa...

  • Article
  • Open Access
1,389 Views
27 Pages

Background/Objective: Cardiomyopathy is a key cause of cardiovascular mortality in critically ill patients. Although red blood cell distribution width (RDW) is recognized as a potential prognostic biomarker, its variations during ICU admission and it...

  • Article
  • Open Access
2 Citations
4,194 Views
20 Pages

Modelling Bimodal Data Using a Multivariate Triangular-Linked Distribution

  • Daan de Waal,
  • Tristan Harris,
  • Alta de Waal and
  • Jocelyn Mazarura

6 July 2022

Bimodal distributions have rarely been studied although they appear frequently in datasets. We develop a novel bimodal distribution based on the triangular distribution and then expand it to the multivariate case using a Gaussian copula. To determine...

  • Article
  • Open Access
5 Citations
2,234 Views
14 Pages

10 March 2021

This manuscript addresses a new multivariate generalized predictive control strategy using the least squares support vector machine for parabolic distributed parameter systems. First, a set of proper orthogonal decomposition-based spatial basis funct...

  • Article
  • Open Access
832 Views
25 Pages

21 October 2025

We introduce a distributional CNN-LSTM framework for probabilistic multivariate modeling and heterogeneous treatment effect (HTE) estimation. The model jointly captures complex dependencies among multiple outcomes and enables precise estimation of in...

  • Article
  • Open Access
11 Citations
3,191 Views
17 Pages

12 November 2023

The spatial structure of forest stands significantly influences inter-tree competition and the overall stability of the stand’s ecological dynamics, and a profound understanding of forest stand spatial structure is essential for both effective...

  • Feature Paper
  • Article
  • Open Access
6 Citations
3,928 Views
26 Pages

17 June 2022

This paper introduces a closed-form expression for the Kullback–Leibler divergence (KLD) between two central multivariate Cauchy distributions (MCDs) which have been recently used in different signal and image processing applications where non-...

  • Article
  • Open Access
1 Citations
1,015 Views
20 Pages

The Student’s t-distribution provides a thematic connection between the historical and technical elements of this paper. The historical section offers a brief account of the early contributions of Chris Heyde and his collaborations with Madan a...

  • Article
  • Open Access
1,944 Views
20 Pages

22 July 2021

A generalized multivariate problem due to V. M. Zolotarev is considered. Some related results on geometric random sums and (multivariate) geometric stable distributions are extended to a more general case of “anisotropic” random summation where sums...

  • Article
  • Open Access
19 Citations
2,712 Views
22 Pages

An Algorithm for Nonparametric Estimation of a Multivariate Mixing Distribution with Applications to Population Pharmacokinetics

  • Walter M. Yamada,
  • Michael N. Neely,
  • Jay Bartroff,
  • David S. Bayard,
  • James V. Burke,
  • Mike van Guilder,
  • Roger W. Jelliffe,
  • Alona Kryshchenko,
  • Robert Leary and
  • Tatiana Tatarinova
  • + 1 author

Population pharmacokinetic (PK) modeling has become a cornerstone of drug development and optimal patient dosing. This approach offers great benefits for datasets with sparse sampling, such as in pediatric patients, and can describe between-patient v...

  • Article
  • Open Access
9 Citations
4,584 Views
22 Pages

Robust Inference in the Capital Asset Pricing Model Using the Multivariate t-distribution

  • Manuel Galea,
  • David Cademartori,
  • Roberto Curci and
  • Alonso Molina

In this paper, we consider asset pricing models under the multivariate t-distribution with finite second moment. Such a distribution, which contains the normal distribution, offers a more flexible framework for modeling asset returns. The main object...

  • Article
  • Open Access
9 Citations
3,009 Views
21 Pages

25 July 2021

Multivariate skew-symmetric-normal (MSSN) distributions have been recognized as an appealing tool for modeling data with non-normal features such as asymmetry and heavy tails, rendering them suitable for applications in diverse areas. We introduce a...

  • Article
  • Open Access
3 Citations
2,249 Views
11 Pages

28 March 2021

The class of log-elliptical distributions is well used and studied in risk measurement and actuarial science. The reason is that risks are often skewed and positive when they describe pure risks, i.e., risks in which there is no possibility of profit...

  • Article
  • Open Access
3 Citations
5,091 Views
21 Pages

Multivariate Student versus Multivariate Gaussian Regression Models with Application to Finance

  • Thi Huong An Nguyen,
  • Anne Ruiz-Gazen,
  • Christine Thomas-Agnan and
  • Thibault Laurent

To model multivariate, possibly heavy-tailed data, we compare the multivariate normal model (N) with two versions of the multivariate Student model: the independent multivariate Student (IT) and the uncorrelated multivariate Student (UT). After recal...

  • Article
  • Open Access
2 Citations
2,956 Views
27 Pages

18 February 2019

This article provides a review of the saddlepoint approximation for a M-statistic of a sample of nonnegative random variables with fixed sum. The sample vector follows the multinomial, the multivariate hypergeometric, the multivariate Polya or the Di...

  • Article
  • Open Access
14 Citations
3,774 Views
22 Pages

4 March 2021

Multivariate nonnegative orthant data are real vectors bounded to the left by the null vector, and they can be continuous, discrete or mixed. We first review the recent relative variability indexes for multivariate nonnegative continuous and count di...

  • Article
  • Open Access
8 Citations
4,002 Views
14 Pages

25 July 2018

Discharge and water quality are two important attributes of rivers, although the joint response relationship between discharge and multiple water quality indicators is not clear. In this paper, the joint probability distributions are established by c...

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