Results 1 to 10 of about 163,423 (274)

Convex mixture regression for quantitative risk assessment [PDF]

open access: yesBiometrics, 2018
There is wide interest in studying how the distribution of a continuous response changes with a predictor. We are motivated by environmental applications in which the predictor is the dose of an exposure and the response is a health outcome. A main focus
Canale, Antonio   +2 more
core   +5 more sources

Dual active-set algorithm for optimal 3-monotone regression [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика, 2022
The paper considers a shape-constrained optimization problem of constructing monotone regression which has gained much attention over the recent years. This paper presents the results of constructing the nonlinear regression with $3$-monotone constraints.
Gudkov, Alexandr A.   +2 more
doaj   +1 more source

Automated resonance evaluation; Non-convex decomposition method for resonance regression and uncertainty quantification [PDF]

open access: yesEPJ Web of Conferences, 2023
This work serves as a proof of concept for an automated tool to assist in the evaluation of experimental neutron cross section data in the resolved resonance range.
Walton Noah   +3 more
doaj   +1 more source

Efficiency of Indian General Insurance Companies: A Convex Nonparametric Least Squares Approach

open access: yesCroatian Operational Research Review, 2022
In the current millennium, the Indian general insurance market has witnessed major structural changes because of the establishment of a market regulator and the initiation of entry deregulation.
Ram Pratap Sinha   +2 more
doaj   +1 more source

A dual active set algorithm for optimal sparse convex regression

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2019
The shape-constrained problems in statistics have attracted much attention in recent decades. One of them is the task of finding the best fitting monotone regression. The problem of constructing monotone regression (also called isotonic regression) is to
Aleksandr A. Gudkov   +3 more
doaj   +3 more sources

CVXR: An R Package for Disciplined Convex Optimization

open access: yesJournal of Statistical Software, 2020
CVXR is an R package that provides an object-oriented modeling language for convex optimization, similar to CVX, CVXPY, YALMIP, and Convex.jl. It allows the user to formulate convex optimization problems in a natural mathematical syntax rather than the ...
Anqi Fu   +2 more
doaj   +1 more source

A New Machine Learning Algorithm Based on Optimization Method for Regression and Classification Problems

open access: yesMathematics, 2020
A convex minimization problem in the form of the sum of two proper lower-semicontinuous convex functions has received much attention from the community of optimization due to its broad applications to many disciplines, such as machine learning ...
Warunun Inthakon   +3 more
doaj   +1 more source

Concave-convex effect of financial resilience on corporate financial performance: quantile regression approach

open access: yesHumanities & Social Sciences Communications, 2023
This study not only aims to elucidate the curvilinear nexus between financial resilience (FR) and corporate financial performance (CFP) by drawing on the ‘too much of a good thing (TMGT)’ and ‘too little of a good thing (TLGT)’ effect but also attempts ...
XueHui Zhang, Kun-Shan Wu, Mingwen He
doaj   +1 more source

Convex hull estimation of mammalian body segment parameters

open access: yesRoyal Society Open Science, 2021
Obtaining accurate values for body segment parameters (BSPs) is fundamental in many biomechanical studies, particularly for gait analysis. Convex hulling, where the smallest-possible convex object that surrounds a set of points is calculated, has been ...
Samuel J. Coatham   +2 more
doaj   +1 more source

Conditional mean embedding and optimal feature selection via positive definite kernels [PDF]

open access: yesOpuscula Mathematica, 2023
Motivated by applications, we consider new operator-theoretic approaches to conditional mean embedding (CME). Our present results combine a spectral analysis-based optimization scheme with the use of kernels, stochastic processes, and constructive ...
Palle E.T. Jorgensen   +2 more
doaj   +1 more source

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