prof. dr. Christophe Ley

Faculty of Sciences > Department of Applied mathematics, computer science and statistics

Work address: Krijgslaan 281, S9
9000 Gent
Email: Christophe.Ley@UGent.be

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- Journal Article
- open access
How to Classify, Detect, and Manage Univariate and Multivariate Outliers, With Emphasis on Pre-Registration

Christophe Leys, Marie Delacre, Youri L. Mora, Daniel Lakens and Christophe Ley (UGent)

(2019) INTERNATIONAL REVIEW OF SOCIAL PSYCHOLOGY. 32(1).
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- Journal Article
- open access
Comparison and Classification of Flexible Distributions for Multivariate Skew and Heavy-Tailed Data

Slađana Babić (UGent) , Christophe Ley (UGent) and David Veredas (UGent)

(2019) SYMMETRY-BASEL. 11(10).
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- Journal Article
A hybrid random forest to predict soccer matches in international tournaments

Andreas Groll, Christophe Ley (UGent) , Gunther Schauberger and Hans Van Eetvelde (UGent)

(2019) JOURNAL OF QUANTITATIVE ANALYSIS IN SPORTS. 15(4). p.271-287
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- Journal Article
- A1
- open access
Quantification of the impact of priors in Bayesian statistics via Stein's Method

Fatemeh Ghaderinezhad (UGent) and Christophe Ley (UGent)

(2019) STATISTICS & PROBABILITY LETTERS. 146. p.206-212
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- Book Chapter
Ranking methods in soccer

Hans Van Eetvelde (UGent) and Christophe Ley (UGent)

(2019) Wiley StatsRef : Statistics Reference Online.
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- Journal Article
- A1
- open access
Ranking soccer teams on the basis of their current strength : a comparison of maximum likelihood approaches

Christophe Ley (UGent) , Tom Van de Wiele and Hans Van Eetvelde (UGent)

(2019) STATISTICAL MODELLING. 19(1). p.55-77
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- Journal Article
- A2
- open access
What makes Data Science different? : a discussion involving Statistics2.0 and Computational Sciences

Christophe Ley (UGent) and Stéphane Bordas

(2018) INTERNATIONAL JOURNAL OF DATA SCIENCE AND ANALYTICS. 6(3). p.167-175
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- Book Chapter
Directional distributions

Kanti V Mardia and Christophe Ley (UGent)

(2018) Wiley StatsRef : Statistics Reference Online.
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- Journal Article
- A1
New methods to assess wind resources in terms of wind speed, load, power and direction

GK Gugliani, A Sarkar, Christophe Ley (UGent) and S Mandal

(2018) RENEWABLE ENERGY. 129. p.168-182
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- Journal Article
- A1
- open access
Natural (non-)informative priors for skew-symmetric distributions

Holger Dette, Christophe Ley (UGent) and Francisco Rubio

(2018) SCANDINAVIAN JOURNAL OF STATISTICS. 45(2). p.405-420
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- Journal Article
- A1
Mutual point-winning probabilities (MPW) : a new performance measure for table tennis

Christophe Ley (UGent) , Yves Dominicy and Wim Bruneel

(2018) JOURNAL OF SPORTS SCIENCES. 36(23). p.2684-2690
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- Journal Article
- A2
- open access
Analysis of biological and biomedical data with circular statistics

Domien Craens (UGent) and Christophe Ley (UGent)

(2018) BIOSTATISTICS AND BIOMETRICS OPEN ACCESS JOURNAL. 5(5).
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- Journal Article
- A1
Detecting multivariate outliers : use a robust variant of the Mahalanobis distance

Christophe Leys, Olivier Klein, Yves Dominicy and Christophe Ley (UGent)

(2018) JOURNAL OF EXPERIMENTAL SOCIAL PSYCHOLOGY. 74. p.150-156
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- Journal Article
- A2
- open access
A tractable, parsimonious and flexible model for cylindrical data, with applications

Toshihiro Abe and Christophe Ley (UGent)

(2017) ECONOMETRICS AND STATISTICS. 4. p.91-104
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- Journal Article
- A2
- open access
Stein's method for comparison of univariate distributions

Christophe Ley (UGent) , Gesine Reinert and Yvik Swan

(2017) PROBABILITY SURVEYS. 14. p.1-52
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- A1
- open access
Bounds for the asymptotic normality of the maximum likelihood estimator using the Delta method

Andreas Anastasiou and Christophe Ley (UGent)

(2017) ALEA-LATIN AMERICAN JOURNAL OF PROBABILITY AND MATHEMATICAL STATISTICS. 14(1). p.153-171
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- open access
Distances between nested densities and a measure of the impact of the prior in Bayesian statistics

Christophe Ley (UGent) , Gesine Reinert and Yvik Swan

(2017) ANNALS OF APPLIED PROBABILITY. 27(1). p.216-241
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- Journal Article
- A1
Skew-rotationally-symmetric distributions and related efficient inferential procedures

Christophe Ley (UGent) and Thomas Verdebout

(2017) JOURNAL OF MULTIVARIATE ANALYSIS. 159. p.67-81
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- Journal Article
- A1
Asymptotic properties of QML estimators for VARMA models with time-dependent coefficients

Abdelkamel Alj, Rajae Azrak, Christophe Ley (UGent) and Guy Mélard

(2017) SCANDINAVIAN JOURNAL OF STATISTICS. 44(3). p.617-635
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- Journal Article
- A1
Efficient ANOVA for directional data

Christophe Ley (UGent) , Yvik Swan and Thomas Verdebout

(2017) ANNALS OF THE INSTITUTE OF STATISTICAL MATHEMATICS. 69(1). p.39-62
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- Journal Article
- A1
A general parametric Stein characterization

Christophe Ley (UGent) and Yvik Swan

(2016) STATISTICS & PROBABILITY LETTERS. 111. p.67-71
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- Journal Article
- A1
- open access
Parametric Stein operators and variance bounds

Christophe Ley (UGent) and Yvik Swan

(2016) BRAZILIAN JOURNAL OF PROBABILITY AND STATISTICS. 30(2). p.171-195
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- Journal Article
- A1
- open access
Depth-based runs tests for bivariate central symmetry

Rainer Dyckerhoff, Christophe Ley (UGent) and Davy Paindaveine

(2015) ANNALS OF THE INSTITUTE OF STATISTICAL MATHEMATICS. 67(5). p.917-941
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- Journal Article
- A2
Flexible modelling in statistics: past, present and future

Christophe Ley (UGent)

(2015) JOURNAL OF THE SFDS. 156(1). p.76-96
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- Journal Article
- A1
Efficient inference about the tail weight in multivariate Student t distributions

Christophe Ley (UGent) and Anouk Neven

(2015) JOURNAL OF STATISTICAL PLANNING AND INFERENCE. 167. p.123-134
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- Journal Article
- A1
High-dimensional tests for spherical location and spiked covariance

Christophe Ley (UGent) , Davy Paindaveine and Thomas Verdebout

(2015) JOURNAL OF MULTIVARIATE ANALYSIS. 139. p.79-91
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- Miscellaneous
On families of distributions with shape parameters: discussion

Christophe Ley (UGent) and Davy Paindaveine

(2015) INTERNATIONAL STATISTICAL REVIEW. 83(2). p.202-207
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- Journal Article
- A1
- open access
Local powers of optimal one-sample and multi-sample tests for the concentration of Fisher-von Mises-Langevin distributions

Christophe Ley (UGent) and Thomas Verdebout

(2014) INTERNATIONAL STATISTICAL REVIEW. 82(3). p.440-456
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- Journal Article
- A1
- open access
Efficiency combined with simplicity : new testing procedures for Generalized Inverse Gaussian models

Angelo Efoevi Koudou and Christophe Ley (UGent)

(2014) TEST. 23(4). p.708-724
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- Journal Article
- A1
Simple optimal tests for circular reflective symmetry about a specified median direction

Christophe Ley (UGent) and Thomas Verdebout

(2014) STATISTICA SINICA. 24(3). p.1319-1339
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- Journal Article
- A2
Characterizations of GIG laws: a survey

Angelo Efoévi Koudou and Christophe Ley (UGent)

(2014) PROBABILITY SURVEYS. 11. p.161-176
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- Journal Article
- A1
Maximum likelihood characterization of distributions

Mitia Duerinckx, Christophe Ley (UGent) and Yvik Swan

(2014) BERNOULLI. 20(2). p.775-802
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- Journal Article
- A1
A new concept of quantiles for directional data and the angular Mahalanobis depth

Christophe Ley (UGent) , Camille Sabbah and Thomas Verdebout

(2014) ELECTRONIC JOURNAL OF STATISTICS. 8. p.795-816
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- Journal Article
- A1
Skew-symmetric distributions and Fisher information: the double sin of the skew-normal

Marc Hallin and Christophe Ley (UGent)

(2014) BERNOULLI. 20(3). p.1432-1453
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- Journal Article
- A1
Optimal R-estimation of a spherical location

Christophe Ley (UGent) , Yvik Swan, Baba Thiam and Thomas Verdebout

(2013) STATISTICA SINICA. 23(1). p.305-332
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- Journal Article
- A1
Stein's density approach and information inequalities

Christophe Ley (UGent) and Yvik Swan

(2013) ELECTRONIC COMMUNICATIONS IN PROBABILITY. 18. p.1-14
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- Journal Article
- A1
Detecting outliers: do not use standard deviation around the mean, use absolute deviation around the median

Christophe Leys, Christophe Ley (UGent) , Olivier Klein, Philippe Bernard and Laurent Licata

(2013) JOURNAL OF EXPERIMENTAL SOCIAL PSYCHOLOGY. 49(4). p.764-766
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- Journal Article
- A1
A stochastic analysis of table tennis

Yves Dominicy, Christophe Ley (UGent) and Yvik Swan

(2013) BRAZILIAN JOURNAL OF PROBABILITY AND STATISTICS. 27(4). p.467-486
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- Journal Article
- A1
Local Pinsker inequalities via Stein's discrete density approach

Christophe Ley (UGent) and Yvik Swan

(2013) IEEE TRANSACTIONS ON INFORMATION THEORY. 59(9). p.5584-5591
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- Book Chapter
Runs tests

Christophe Ley (UGent) and Davy Paindaveine

(2012) Encyclopedia of environmetrics. p.2474-2481
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- Book Chapter
Skew distributions

Christophe Ley (UGent)

(2012) Encyclopedia of environmetrics. p.1944-1949
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- Book Chapter
Permutation tests

Marc Hallin and Christophe Ley (UGent)

(2012) Encyclopedia of environmetrics. p.209-210
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- Journal Article
- A2
Maximum likelihood characterization of rotationally symmetric distributions on the sphere

Mitia Duerinckx and Christophe Ley (UGent)

(2012) SANKHYA SERIES A. 74(2). p.249-262
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- Journal Article
- A1
Skew-symmetric distributions and Fisher information: a tale of two densities

Marc Hallin and Christophe Ley (UGent)

(2012) BERNOULLI. 18(3). p.747-763
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- Journal Article
- A1
- open access
On the singularity of multivariate skew-symmetric models

Christophe Ley (UGent) and Davy Paindaveine

(2010) JOURNAL OF MULTIVARIATE ANALYSIS. 101(6). p.1434-1444
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- Journal Article
- A2
On Fisher information matrices and profile log-likelihood functions in generalized skew-elliptical models

Christophe Ley (UGent) and Davy Paindaveine

(2010) METRON-INTERNATIONAL JOURNAL OF STATISTICS. 68(3). p.235-250
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- Journal Article
- A1
Multivariate skewing mechanisms: a unified perspective based on the transformation approach

Christophe Ley (UGent) and Davy Paindaveine

(2010) STATISTICS & PROBABILITY LETTERS. 80(23-24). p.1685-1694
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- Journal Article
- A1
Le Cam optimal tests for symmetry against Ferreira and Steel’s general skewed distributions

Christophe Ley (UGent) and Davy Paindaveine

(2009) JOURNAL OF NONPARAMETRIC STATISTICS. 21(8). p.943-967

How to Classify, Detect, and Manage Univariate and Multivariate Outliers, With Emphasis on Pre-Registration

Comparison and Classification of Flexible Distributions for Multivariate Skew and Heavy-Tailed Data

A hybrid random forest to predict soccer matches in international tournaments

Quantification of the impact of priors in Bayesian statistics via Stein's Method

Ranking methods in soccer

Ranking soccer teams on the basis of their current strength : a comparison of maximum likelihood approaches

What makes Data Science different? : a discussion involving Statistics2.0 and Computational Sciences

Directional distributions

New methods to assess wind resources in terms of wind speed, load, power and direction

Natural (non-)informative priors for skew-symmetric distributions

Mutual point-winning probabilities (MPW) : a new performance measure for table tennis

Analysis of biological and biomedical data with circular statistics

Detecting multivariate outliers : use a robust variant of the Mahalanobis distance

A tractable, parsimonious and flexible model for cylindrical data, with applications

Stein's method for comparison of univariate distributions

Bounds for the asymptotic normality of the maximum likelihood estimator using the Delta method

Distances between nested densities and a measure of the impact of the prior in Bayesian statistics

Skew-rotationally-symmetric distributions and related efficient inferential procedures

Asymptotic properties of QML estimators for VARMA models with time-dependent coefficients

Efficient ANOVA for directional data

A general parametric Stein characterization

Parametric Stein operators and variance bounds

Depth-based runs tests for bivariate central symmetry

Flexible modelling in statistics: past, present and future

Efficient inference about the tail weight in multivariate Student t distributions

High-dimensional tests for spherical location and spiked covariance

On families of distributions with shape parameters: discussion

Local powers of optimal one-sample and multi-sample tests for the concentration of Fisher-von Mises-Langevin distributions

Efficiency combined with simplicity : new testing procedures for Generalized Inverse Gaussian models

Simple optimal tests for circular reflective symmetry about a specified median direction

Characterizations of GIG laws: a survey

Maximum likelihood characterization of distributions

A new concept of quantiles for directional data and the angular Mahalanobis depth

Skew-symmetric distributions and Fisher information: the double sin of the skew-normal

Optimal R-estimation of a spherical location

Stein's density approach and information inequalities

Detecting outliers: do not use standard deviation around the mean, use absolute deviation around the median

A stochastic analysis of table tennis

Local Pinsker inequalities via Stein's discrete density approach

Runs tests

Skew distributions

Permutation tests

Maximum likelihood characterization of rotationally symmetric distributions on the sphere

Skew-symmetric distributions and Fisher information: a tale of two densities

On the singularity of multivariate skew-symmetric models

On Fisher information matrices and profile log-likelihood functions in generalized skew-elliptical models

Multivariate skewing mechanisms: a unified perspective based on the transformation approach

Le Cam optimal tests for symmetry against Ferreira and Steel’s general skewed distributions