Results 1 to 10 of about 303,639 (271)

Pareto-Front Optimization of Variance-Added Expected Loss with Interrelated Qualities [PDF]

open access: yesEntropy
In industries, particularly in quality optimization, the trade-off between model bias and variance is inevitable, reflecting the tension between accuracy and uncertainty.
Sangwon Kim, Kichun Lee
doaj   +2 more sources

Surface Waves Enhance Particle Dispersion

open access: yesFluids, 2019
We study the horizontal dispersion of passive tracer particles on the free surface of gravity waves in deep water. For random linear waves with the JONSWAP spectrum, the Lagrangian particle trajectories are computed using an exact nonlinear model known ...
Mohammad Farazmand, Themistoklis Sapsis
doaj   +3 more sources

Fuzzy Neural Network for Fuzzy Quadratic Programming With Penalty Function and Mean-Variance Markowitz Portfolio Model

open access: yesApplied Computational Intelligence and Soft Computing
This research tries to integrate fuzzy neural networks with penalty function to address the quadratic programming based on the mean-variance Markowitz portfolio model.
Izaz Ullah Khan   +3 more
doaj   +2 more sources

Approximate Bayesian estimation for parameters of simple linear bivariate truncated t regression model [PDF]

open access: yesمجلة التربية والعلم, 2020
In this paper , It is obtained to approximate estimation for  parameters of the two-tailed truncated  regression model by Lindely approach . The prior  non- informative  was used for the regression parameters matrix when the variance matrix is ​​known ...
Elham Hussain, Haifa Saied
doaj   +1 more source

Interior Point Algorithm in Multi-objective Portfolio Optimization: GlueVaR Approach [PDF]

open access: yesتحقیقات مالی, 2023
Objective Investors, in their pursuit to maximize expected returns, minimize risks in their stock portfolios, and achieve the desired benefits, require suitable methods and criteria to select stocks for their portfolios and allocate capital.
Elaheh Gohania   +2 more
doaj   +1 more source

General dependence structures for some models based on exponential families with quadratic variance functions [PDF]

open access: yesTEST, 2022
We describe a procedure to introduce general dependence structures on a set of random variables. These include order-$q$ moving average-type structures, as well as seasonal, periodic, spatial and spatio-temporal dependences. The invariant marginal distribution can be in any family that is conjugate to an exponential family with quadratic variance ...
Luis Nieto-Barajas   +1 more
openaire   +2 more sources

Crime variability, peer effects, and economic inequality in social networks

open access: yesJournal of Economic Criminology, 2023
A large fraction of the variance in aggregate crime rates cannot be explained by observable socioeconomic conditions. Social determinants of crime may drive the unexplained variation, but economic models of social influence so far emphasize the intensity
Mateo Velásquez-Giraldo   +2 more
doaj   +1 more source

Discrimination between Some Over Dispersed Count Distributions

open access: yesASM Science Journal, 2021
The Poisson inverse Gaussian and generalized Poisson distributions are widely used in modelling overdispersed count data which are commonly found in healthcare, insurance, engineering, econometric and ecology.
Yook-Ngor Phang   +2 more
doaj   +1 more source

Evaluating graphing quadratic worksheet on visual thinking classification: A confirmatory analysis

open access: yesInfinity, 2023
Applying a graphing quadratic worksheet as a medium for learning the concept of a Quadratic Function clearer is an alternative instrument to accommodate the needs of developing students' mathematical visual thinking.
Rina Oktaviyanthi, Ria Noviana Agus
doaj   +1 more source

Exploration of new chemical materials using black-box optimization with the D-wave quantum annealer

open access: yesFrontiers in Computer Science, 2023
In materials informatics, searching for chemical materials with desired properties is challenging due to the vastness of the chemical space. Moreover, the high cost of evaluating properties necessitates a search with a few clues.
Mikiya Doi   +7 more
doaj   +1 more source

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