نتایج جستجو برای: piecewise regression

تعداد نتایج: 331244  

Journal: :Black sea journal of agriculture 2022

In this study, in vitro gas production values (hour/ml) of standard, alfalfa and corn plants at 3, 6, 9, 12, 24, 36, 48, 72 96 hours Kahramanmaras Sutcu Imam University Animal Science Department Feeds Nutrition Laboratory. ) used cubic piecewise regression, Richard, Logistics, Gamma, Gompertz, Orscov, Sigmoaidal Quadratic Piecewise Regression models were used. the modeling mean squares error, d...

Journal: :Frontiers in Education 2022

In intervention research, single-case experimental designs are an important way to gain insights into the causes of individual changes that yield high internal validity. They commonly applied examine effectiveness classroom-based interventions reduce problem behavior in schools. At same time, there is no consensus on good design characteristics when dealing with behavioral problems Moreover, sp...

Journal: :Annals of the Institute of Statistical Mathematics 2022

In this paper, we consider conditional selective inference (SI) for a linear model estimated after outliers are removed from the data. To apply SI framework, it is necessary to characterize events of how robust method identifies outliers. Unfortunately, existing SIs cannot be directly applied our problem because they applicable case where selection can represented by or quadratic constraints. W...

Journal: :Computers & Chemical Engineering 2021

Operational optimization of multi-energy systems requires a mathematical model that is accurate and computationally efficient. A can be generated in data-driven way if measured data available. Commonly, then used to each component the system independently. However, independent modeling may lead models are unnecessarily complicated and, thus, inefficient practice. In this work, we propose method...

2002
Joseph M. Francos

We consider the problem of estimating regression models of two-dimensional random fields. Asymptotic properties of the least squares estimator of the linear regression coefficients are studied for the case where the disturbance is a homogeneous random field with an absolutely continuous spectral distribution and a positive and piecewise continuous spectral density. We obtain necessary and suffi...

Journal: :Clinical chemistry 1998
A Virtanen V Kairisto K Irjala A Rajamäki E Uusipaikka

Calculation of reference limits by regression analysis makes it unnecessary to partition the reference data into subgroups, and age-dependent limits can be estimated within as narrow age intervals as necessary. However, the reliability of the regression-based reference limits has not been considered before. To get valid regression-based confidence intervals (CIs) for reference limits, one must ...

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