Results 31 to 40 of about 28,035 (142)

Improved quality metrics for association and reproducibility in chromatin accessibility data using mutual information

open access: yesBMC Bioinformatics, 2023
Background Correlation metrics are widely utilized in genomics analysis and often implemented with little regard to assumptions of normality, homoscedasticity, and independence of values.
Cullen Roth   +6 more
doaj   +1 more source

Can point-of-care ultrasound predict the difficulty in intubation? – A prospective observational study

open access: yesIndian Journal of Anaesthesia
Background and Aims: Airway ultrasonography (USG) parameters have been used to predict difficult tracheal intubation. However, the available literature on this topic is still controversial.
Roopali Phulli   +5 more
doaj   +1 more source

Fast estimation of Kendall's Tau and conditional Kendall's Tau matrices under structural assumptions

open access: yesDependence Modeling
Kendall’s tau and conditional Kendall’s tau matrices are multivariate (conditional) dependence measures between the components of a random vector. For large dimensions, available estimators are computationally expensive and can be improved by averaging ...
van der Spek Rutger, Derumigny Alexis
doaj   +1 more source

The Core, Periphery, and Beyond: Stock Market Comovements among EU and Non-EU Countries [PDF]

open access: yes, 2019
We thank conference participants at the 2016 Financial Management Association and our discussant Fernando Moreira, and two anonymous referees for immensely helpful comments. We also thank Andrew Patton and James P.
Nelsen R.B.   +4 more
core   +2 more sources

Predictive effect of TCED-HFV grading and imaging biomarkers on anti-VEGF therapy in diabetic macular edema

open access: yesBMC Ophthalmology, 2023
Background To evaluate the predictive effect of TCED-HFV grading and imaging biomarkers on anti-vascular endothelial growth factor (anti-VEGF) treatment in diabetic macular edema (DME).
Lu Yu   +6 more
doaj   +1 more source

A few generalizations of Kendall’s tau. Part I: Construction

open access: yesNonlinear Analysis
Complimenting our earlier work on generalizations of popular concordance measures in the sense of Scarsini for a pair of continuous random variables (X, Y) (such measures can be understood as functions of the bivariate copula C associated with (X, Y ...
Martynas Manstavičius
doaj   +1 more source

An information theoretic approach to statistical dependence: copula information

open access: yes, 2009
We discuss the connection between information and copula theories by showing that a copula can be employed to decompose the information content of a multivariate distribution into marginal and dependence components, with the latter quantified by the ...
Amari S.-I.   +11 more
core   +1 more source

Individual Capacities of Hellwig’s Information Carriers and the Impact of Attributes in the Szczecin Algorithm of Real Estate Mass Appraisal

open access: yesReal Estate Management and Valuation, 2019
A statistical method of defining the impact of real estate attributes based on individual capacities of Hellwig’s information carriers was proposed in the paper.
Doszyń Mariusz
doaj   +1 more source

Plug-in Estimation of Dependence Characteristics of Archimedean Copula via Bézier Curve

open access: yesRevstat Statistical Journal, 2023
This article introduces measurement of the dependence between variables with a dependence structure defined by Archimedean copulas. The estimation of the dependence measure, such as Kendall’s tau as well as the lower and upper tail dependence, is ...
Selim Orhun Susam   +1 more
doaj   +1 more source

Statistical analysis of dependent competing risks model in constant stress accelerated life testing with progressive censoring based on copula function

open access: yesStatistical Theory and Related Fields, 2018
In this paper, we consider the statistical analysis for the dependent competing risks model in the constant stress accelerated life testing with Type-II progressive censoring. It is focused on two competing risks from Lomax distribution.
Xuchao Bai   +3 more
doaj   +1 more source

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