Results 1 to 10 of about 5,397,311 (205)

Some properties of a generalized type-1 Dirichlet distribution

Statistica, 2013
This paper deals with a generalization of type-1 Dirichlet density by incorporating partial sums of the component variables. We study various proportions, structural decompositions, connections to random volumes and p-parallelotopes.
E. V. Mayamol
doaj   +2 more sources

Accelerating Extreme Search of Multidimensional Functions Based on Natural Gradient Descent with Dirichlet Distributions

Mathematics, 2022
The high accuracy attainment, using less complex architectures of neural networks, remains one of the most important problems in machine learning. In many studies, increasing the quality of recognition and prediction is obtained by extending neural ...
Ruslan Abdulkadirov, Pavel Lyakhov, Nikolay Nagornov   +2 more
doaj   +1 more source

Decay Branch Ratio Sampling Method with Dirichlet Distribution

Energies, 2023
The decay branch ratio is evaluated nuclear data related to the decay heat calculation in reactor safety analysis. Decay branch ratio data are inherently subjected to the “sum-to-one” constraint, making it difficult to generate perturbed samples while ...
Yizhen Wang, Menglei Cui, Jiong Guo, Han Zhang, Yingjie Wu, Fu Li   +5 more
doaj   +1 more source

Efficient Feature Mapping in Classifying Proportional Data

IEEE Access, 2021
In image classification, traditional kernels or feature mapping functions of Support Vector Machine(SVM) use discriminative features without considering the true nature of the data.
Md. Hafizur Rahman, Nizar Bouguila
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Analytical solutions for time-fractional diffusion equation with heat absorption in spherical domains

Ain Shams Engineering Journal, 2023
Under the time-variable Dirichlet condition, the time-fractional diffusion equation with heat absorption in a sphere is taken into consideration. The time-fractional derivative with the power-law kernel is used in the generalized Cattaneo constitutive ...
Nehad Ali Shah, N. Ameer Ahammad, Dumitru Vieru, Se-Jin Yook, Hussam Alrabaiah   +4 more
doaj   +1 more source

Future Projections and Uncertainty Assessment of Precipitation Extremes in the Korean Peninsula from the CMIP6 Ensemble with a Statistical Framework

Atmosphere, 2021
Scientists occasionally predict projected changes in extreme climate using multi-model ensemble methods that combine predictions from individual simulation models.
Yonggwan Shin, Yire Shin, Juyoung Hong, Maeng-Ki Kim, Young-Hwa Byun, Kyung-On Boo, Il-Ung Chung, Doo-Sun R. Park, Jeong-Soo Park   +8 more
doaj   +1 more source

Flexible Bayesian Dirichlet mixtures of generalized linear mixed models for count data

Scientific African, 2021
The need to model count data correctly calls for introducting a flexible yet robust model that can sufficiently handle various types of count data. Models such as Ordinary Least Squares (OLS) used in the past were considered unsuitable.
Olumide S. Adesina, Dawud A. Agunbiade, Pelumi E. Oguntunde   +2 more
doaj   +1 more source

Observations on K-Image Expansion of Image-Mixing Augmentation

IEEE Access, 2023
Image-mixing augmentations (e.g., Mixup and CutMix), which typically involve mix ing two images, have become the de-facto training techniques for image classification.
Joonhyun Jeong, Sungmin Cha, Jongwon Choi, Sangdoo Yun, Taesup Moon, Youngjoon Yoo   +5 more
doaj   +1 more source

Some Relationships between the Analogs of Euler Numbers and Polynomials

Journal of Inequalities and Applications, 2007
We construct new twisted Euler polynomials and numbers. We also study the generating functions of the twisted Euler numbers and polynomials associated with their interpolation functions.
C. S. Ryoo, Lee-Chae Jang, T. Kim
doaj   +2 more sources

Single-Block Recursive Poisson–Dirichlet Fragmentations of Normalized Generalized Gamma Processes

Mathematics, 2022
Dong, Goldschmidt and Martin (2006) (DGM) showed that, for ...
Lancelot F. James
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