Results 11 to 20 of about 747,309 (177)

Integral, mean and covariance of the simplex-truncated multivariate normal distribution. [PDF]

open access: yesPLoS ONE, 2022
Compositional data, which is data consisting of fractions or probabilities, is common in many fields including ecology, economics, physical science and political science.
Matthew P Adams
doaj   +2 more sources

Multivariate geometric skew-normal distribution [PDF]

open access: yesStatistics, 2017
Azzalini (1985) introduced a skew-normal distribution of which normal distribution is a special case. Recently Kundu (2014) introduced a geometric skew-normal distribution and showed that it has certain advantages over Azzalini's skew-normal distribution. In this paper we discuss about the multivariate geometric skew-normal distribution. It can be used
Kundu, Debasis
openaire   +3 more sources

On the conditional distribution of a multivariate Normal given a transformation – the linear case

open access: yesHeliyon, 2019
We show that the orthogonal projection operator onto the range of the adjoint T⁎ of a linear operator T can be represented as UT, where U is an invertible linear operator. Given a Normal random vector Y and a linear operator T, we use this representation
Rajeshwari Majumdar, Suman Majumdar
doaj   +3 more sources

Properties and Estimations of a Multivariate Folded Normal Distribution

open access: yesMathematics, 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 ...
Xi Liu   +3 more
doaj   +1 more source

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

open access: yesAlgorithms, 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.
Lucy Blondell   +3 more
doaj   +1 more source

Joint Modeling of Received Power, Mean Delay, and Delay Spread for Wideband Radio Channels [PDF]

open access: yes, 2021
We propose a multivariate log-normal distribution to jointly model received power, mean delay, and root mean square (rms) delay spread of wideband radio channels, referred to as the standardized temporal moments. The model is validated using experimental
Adeogun, Ramoni   +6 more
core   +5 more sources

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

open access: yesMathematics, 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 ...
Guillermo Martínez-Flórez   +3 more
doaj   +1 more source

Bayesian estimation of probability distributions of undrained shear strength of soils with limited site data

open access: yesYantu gongcheng xuebao, 2023
To address the issue of poor reliability of the design parameters due to limited or incomplete geotechnical investigation data, a cohesive soil parameter database containing 1679 sets of data from 141 sites is established.
ZHANG De 1, ZHANG Zechao 2, ZHANG Lulu 1, 3, 4, ZHANG Jie 5, CAO Zijun 6
doaj   +1 more source

Some Statistical Aspects of the Truncated Multivariate Skew-t Distribution

open access: yesMathematics, 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.
Raúl Alejandro Morán-Vásquez   +2 more
doaj   +1 more source

Multiple Linear Cryptanalysis Using Linear Statistics

open access: yesIACR Transactions on Symmetric Cryptology, 2020
We propose an improved and extended approach of the multiple linear cryptanalysis presented by A. Biryukov et al. at CRYPTO 2004 that exploits dominant and statistically independent linear trails. While they presented only rank based attacks with success
Jung-Keun Lee, Woo-Hwan Kim
doaj   +1 more source

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