Results 31 to 40 of about 425,331 (287)

Performance of Some Stochastic Restricted Ridge Estimator in Linear Regression Model

open access: yesJournal of Applied Mathematics, 2014
This paper considers several estimators for estimating the stochastic restricted ridge regression estimators. A simulation study has been conducted to compare the performance of the estimators.
Jibo Wu, Chaolin Liu
doaj   +1 more source

Superiority of the Stochastic Restricted Liu Estimator under misspecification

open access: yesStatistica, 2007
This paper deals with the use of correct prior infromation in the estimation of regression coefficients when the regression model is misspecified due to the exclusion of some relevant regressor variables.
M. H. Hubert, Pushba Wijekoon
doaj   +1 more source

Liu Estimates and Influence Analysis in Regression Models with Stochastic Linear Restrictions and AR (1) Errors [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2019
In the linear regression models with AR (1) error structure when collinearity exists, stochastic linear restrictions or modifications of biased estimators (including Liu estimators) can be used to reduce the estimated variance of the regression ...
Hoda Mohammadi, Abdolrahman Rasekh
doaj   +1 more source

Accelerated regression-based summary statistics for discrete stochastic systems via approximate simulators

open access: yesBMC Bioinformatics, 2021
Background Approximate Bayesian Computation (ABC) has become a key tool for calibrating the parameters of discrete stochastic biochemical models. For higher dimensional models and data, its performance is strongly dependent on having a representative set
Richard M. Jiang   +4 more
doaj   +1 more source

On stochastic accelerated gradient with non-strongly convexity

open access: yesAIMS Mathematics, 2022
In this paper, we consider stochastic approximation algorithms for least-square and logistic regression with no strong-convexity assumption on the convex loss functions.
Yiyuan Cheng   +3 more
doaj   +1 more source

Improved Redundant Rule-Based Stochastic Gradient Algorithm for Time-Delayed Models Using Lasso Regression

open access: yesIEEE Access, 2022
This paper proposes an improved redundant rule based lasso regression stochastic gradient (RR-LR-SG) algorithm for time-delayed models. The improved SG algorithm can update the parameter elements with different step-sizes and directions, thus it is more ...
Hangtao Zhao, Lixin Lv, Yuejiang Ji
doaj   +1 more source

Adaptive stochastic model predictive control of linear systems using Gaussian process regression

open access: yesIET Control Theory & Applications, 2021
This paper presents a stochastic model predictive control method for linear time‐invariant systems subject to state‐dependent additive uncertainties modelled by Gaussian process (GP).
Fei Li, Huiping Li, Yuyao He
doaj   +1 more source

Competence region estimation for black-box surrogate models

open access: yesProceedings of the International Florida Artificial Intelligence Research Society Conference, 2021
With advances in edge applications for industry andhealthcare, machine learning models are increasinglytrained on the edge. However, storage and memory in-frastructure at the edge are often primitive, due to costand real-estate constraints.
Tapan Shah
doaj   +1 more source

Accounting for measurement error in log regression models with applications to accelerated testing. [PDF]

open access: yesPLoS ONE, 2018
In regression settings, parameter estimates will be biased when the explanatory variables are measured with error. This bias can significantly affect modeling goals.
Robert Richardson   +3 more
doaj   +1 more source

Approximation of backward stochastic differential equations using Malliavin weights and least-squares regression [PDF]

open access: yes, 2016
We design a numerical scheme for solving a Dynamic Programming equation with Malliavin weights arising from the time-discretization of backward stochastic differential equations with the integration by parts-representation of the $Z$-component by (Ann ...
Gobet, Emmanuel, Turkedjiev, Plamen
core   +1 more source

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