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

open access: goldDependence 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   +4 more sources

Marčenko-Pastur Law for Kendall's Tau [PDF]

open access: greenElectronic Communications in Probability, 2016
Fixed errors and typos in the section ...
Afonso S. Bandeira   +2 more
  +8 more sources

On kernel-based estimation of conditional Kendall’s tau: finite-distance bounds and asymptotic behavior [PDF]

open access: yesDependence Modeling, 2019
We study nonparametric estimators of conditional Kendall’s tau, a measure of concordance between two random variables given some covariates. We prove non-asymptotic pointwise and uniform bounds, that hold with high probabilities.
Derumigny Alexis, Fermanian Jean-David
doaj   +3 more sources

Testing for Changes in Kendall's Tau [PDF]

open access: yesEconometric Theory, 2016
For a bivariate time series $((X_i,Y_i))_{i=1,...,n}$ we want to detect whether the correlation between $X_i$ and $Y_i$ stays constant for all $i = 1,...,n$.
Aue   +38 more
core   +6 more sources

Study of partial and average conditional Kendall’s tau [PDF]

open access: yesDependence Modeling, 2021
When the interest is in studying conditional dependencies, and more precisely the strength of conditional dependencies, some kind of averaging over the conditioning random vector may be needed.
Gijbels Irène, Matterne Margot
doaj   +4 more sources

An LSH Index for Computing Kendall's Tau over Top-k Lists [PDF]

open access: green, 2014
We consider the problem of similarity search within a set of top-k lists under the Kendall's Tau distance function. This distance describes how related two rankings are in terms of concordantly and discordantly ordered items.
Michel, Sebastian, Pal, Koninika
core   +2 more sources

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

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   +2 more sources

Accuracy of the strengths and difficulties questionnaire in identifying common mental health disorders in children and adolescents: a cross-sectional analytical study [PDF]

open access: yesDiscover Mental Health
Background and aim This cross-sectional analytic study, conducted in the Child and Adolescent Mental Health (CAMH) Clinic of Sultan Qaboos University Hospital (SQUH) for 12 months, aimed to evaluate the precision of the Strengths and Difficulties ...
Maisaa Al-Dhahri   +5 more
doaj   +2 more sources

Kendall's tau for autocorrelation

open access: green, 2011
The authors show how Kendall's tau can be adapted to test against serial dependence in a univariate time series context. They provide formulas for the mean and variance of circular and non-circular versions of this statistic, and they prove its asymptotic normality.
Thomas S. Ferguson   +2 more
openalex   +3 more sources

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