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This poster describes a potential problem with a relatively well used measure in Information Retrieval research: Kendall's Tau rank correlation coefficient. The coefficient is best known for its use in determining the similarity of test collections when ranking sets of retrieval runs. Threshold values for the coefficient have been defined and used in a
Mark Sanderson, Ian Soboroff
core +4 more sources
On kernel-based estimation of conditional Kendall’s tau: finite-distance bounds and asymptotic behavior [PDF]
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
On attainability of Kendall’s tau matrices and concordance signatures [PDF]
Methods are developed for checking and completing systems of bivariate and multivariate Kendall's tau concordance measures in applications where only partial information about dependencies between variables is available. The concept of a concordance signature of a multivariate continuous distribution is introduced; this is the vector of concordance ...
Alexander J. McNeil +2 more
core +6 more sources
Graphing methods for Kendall's {\tau} [PDF]
Ranked data is commonly used in research across many fields of study including medicine, biology, psychology, and economics. One common statistic used for analyzing ranked data is Kendall's {\tau} coefficient, a non-parametric measure of rank correlation which describes the strength of the association between two monotonic continuous or ordinal ...
Edwards, Nicholas D. +2 more
core +3 more sources
Kendall's tau for autocorrelation [PDF]
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 Ferguson +2 more
openaire +3 more sources
Nutritional status and functions in children with cerebral palsy at different gestational ages. [PDF]
The nutritional status of cerebral palsy was significantly associated with their motor, eating and drinking ability, and their ability of daily living in the 28–32‐week and the ≥37‐week gestational age group, whereas in 33–36‐week group, correlation was only observed between the nutritional status and eating and drinking ability.
Tang H +14 more
europepmc +2 more sources
Kendall tau sequence distance: Extending Kendall tau from ranks to sequences [PDF]
Corrections of a few minor ...
openaire +5 more sources
Objective: To examine the correlation between plasma cerebral biomarkers (S100B and neuron-specific enolase (NSE)) and ultrasonographic optic-nerve-sheath-diameter (ONSD) in preeclampsia.
Gabrijela Brzan Simenc +4 more
doaj +1 more source
Kendall’s tau for hierarchical data
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
H. Romdhani +2 more
openaire +1 more source
On a Weighted Generalization of Kendall’s Tau Distance
17 pages, 3 ...
Albert Bruno Piek, Evgeniy Petrov
openaire +3 more sources

