Results 1 to 10 of about 12,243 (115)

Identifying change points in a covariate effect on time-to-event analysis with reduced isotonic regression. [PDF]

open access: yesPLoS ONE, 2014
Isotonic regression is a useful tool to investigate the relationship between a quantitative covariate and a time-to-event outcome. The resulting non-parametric model is a monotonic step function of a covariate X and the steps can be viewed as change ...
Yong Ma, Yinglei Lai, John M Lachin
doaj   +2 more sources

A lightweight deep learning framework for reliable microscopy-based diagnosis of cutaneous leishmaniasis. [PDF]

open access: yesPLoS ONE
Cutaneous leishmaniasis (CL) is a neglected tropical and zoonotic disease affecting both human and animal health, for which microscopic examination of Giemsa-stained slides remains the diagnostic reference standard despite being time-consuming and ...
Nisreen Osman E Ahmed   +2 more
doaj   +2 more sources

The bias of isotonic regression [PDF]

open access: yesElectronic Journal of Statistics, 2020
Garvesh Raskutti
exaly   +2 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

A Meta-Analysis for Simultaneously Estimating Individual Means with Shrinkage, Isotonic Regression and Pretests

open access: yesAxioms, 2021
Meta-analyses combine the estimators of individual means to estimate the common mean of a population. However, the common mean could be undefined or uninformative in some scenarios where individual means are “ordered” or “sparse”.
Nanami Taketomi   +3 more
doaj   +1 more source

The Influence of Active Hamstring Stiffness on Markers of Isotonic Muscle Performance

open access: yesSports, 2021
Background: Previous research demonstrates hamstring muscle-tendon stiffness (HMTS) influences isometric strength, landing biomechanics and architectural tissue properties.
Sean P. Langan   +4 more
doaj   +1 more source

An Experimental Investigation of Calibration Techniques for Imbalanced Data

open access: yesIEEE Access, 2020
Calibration is a technique used to obtain accurate probability estimation for classification problems in real applications. Class imbalance can create considerable challenges in obtaining accurate probabilities for calibration methods.
Lanlan Huang   +4 more
doaj   +1 more source

Adaptive Reconstruction of Imperfectly Observed Monotone Functions, with Applications to Uncertainty Quantification

open access: yesAlgorithms, 2020
Motivated by the desire to numerically calculate rigorous upper and lower bounds on deviation probabilities over large classes of probability distributions, we present an adaptive algorithm for the reconstruction of increasing real-valued functions ...
Luc Bonnet   +3 more
doaj   +1 more source

A regression based phase I clinical trial for late-onset toxicities without clinician elicitation

open access: yesContemporary Clinical Trials Communications, 2019
An extension of the isotonic regression based phase I clinical trial design is presented that incorporates partial follow-up times into estimation of the raw toxicity probabilities.
Andrew G. Chapple   +2 more
doaj   +1 more source

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