On multi-way metricity, minimality and diagonal planes. - Matthijs J. Warrens (Adv. Data Anal. Classif., 2008)

On the Indeterminacy of Resemblance Measures for Binary (Presence/Absence) Data. - Matthijs J. Warrens (J. Classif., 2008)

On the Equivalence of Cohen's Kappa and the Hubert-Arabie Adjusted Rand Index. - Matthijs J. Warrens (J. Classif., 2008)

Bounds of Resemblance Measures for Binary (Presence/Absence) Variables. - Matthijs J. Warrens (J. Classif., 2008)

On Robinsonian dissimilarities, the consecutive ones property and latent variable models. - Matthijs J. Warrens (Adv. Data Anal. Classif., 2009)

k-Adic Similarity Coefficients for Binary (Presence/Absence) Data. - Matthijs J. Warrens (J. Classif., 2009)

Diagnostics for regression dependence in tables re-ordered by the dominant correspondence analysis solution. - Matthijs J. Warrens; Willem J. Heiser (Comput. Stat. Data Anal., 2009)

Inequalities between multi-rater kappas. - Matthijs J. Warrens (Adv. Data Anal. Classif., 2010)

n-Way Metrics. - Matthijs J. Warrens (J. Classif., 2010)

A Formal Proof of a Paradox Associated with Cohen's Kappa. - Matthijs J. Warrens (J. Classif., 2010)

Cohen's linearly weighted kappa is a weighted average. - Matthijs J. Warrens (Adv. Data Anal. Classif., 2012)

Cohen's weighted kappa with additive weights. - Matthijs J. Warrens (Adv. Data Anal. Classif., 2013)

The Cicchetti-Allison weighting matrix is positive definite. - Matthijs J. Warrens (Comput. Stat. Data Anal., 2013)

Corrected Zegers-ten Berge Coefficients Are Special Cases of Cohen's Weighted Kappa. - Matthijs J. Warrens (J. Classif., 2014)

Some Relationships Between Cronbach's Alpha and the Spearman-Brown Formula. - Matthijs J. Warrens (J. Classif., 2015)

A comparison of reliability coefficients for psychometric tests that consist of two parts. - Matthijs J. Warrens (Adv. Data Anal. Classif., 2016)

Inequalities Between Similarities for Numerical Data. - Matthijs J. Warrens (J. Classif., 2016)

Kappa Coefficients for Circular Classifications. - Matthijs J. Warrens; Bunga C. Pratiwi (J. Classif., 2016)

Category kappas for agreement between fuzzy classifications. - Matthijs J. Warrens (Neurocomputing, 2016)

Symmetric kappa as a function of unweighted kappas. - Matthijs J. Warrens (Commun. Stat. Simul. Comput., 2017)

On the Negative Bias of the Gini Coefficient due to Grouping. - Matthijs J. Warrens (J. Classif., 2018)

Properties of Bangdiwala's B. - Matthijs J. Warrens; Alexandra de Raadt (Adv. Data Anal. Classif., 2019)

Understanding partition comparison indices based on counting object pairs. - Matthijs J. Warrens; Hanneke van der Hoef (CoRR, 2019)

Similarity measures for 2 × 2 tables. - Matthijs J. Warrens (J. Intell. Fuzzy Syst., 2019)

The Matthews Correlation Coefficient (MCC) is More Informative Than Cohen's Kappa and Brier Score in Binary Classification Assessment. - Davide Chicco; Matthijs J. Warrens; Giuseppe Jurman (IEEE Access, 2021)

Kappa coefficients for dichotomous-nominal classifications. - Matthijs J. Warrens (Adv. Data Anal. Classif., 2021)

A Comparison of Reliability Coefficients for Ordinal Rating Scales. - Alexandra de Raadt; Matthijs J. Warrens; Roel J. Bosker; Henk A. L. Kiers (J. Classif., 2021)

The coefficient of determination R-squared is more informative than SMAPE, MAE, MAPE, MSE and RMSE in regression analysis evaluation. - Davide Chicco; Matthijs J. Warrens; Giuseppe Jurman (PeerJ Comput. Sci., 2021)

Understanding the Adjusted Rand Index and Other Partition Comparison Indices Based on Counting Object Pairs. - Matthijs J. Warrens; Hanneke van der Hoef (J. Classif., 2022)

A white paper on good research practices in benchmarking: The case of cluster analysis. - Iven Van Mechelen; Anne-Laure Boulesteix; Rainer Dangl; Nema Dean; Christian Hennig; Friedrich Leisch; Douglas L. Steinley; Matthijs J. Warrens (WIREs Data. Mining. Knowl. Discov., 2023)

Weighted Kappa for Interobserver Agreement and Missing Data. - Matthijs J. Warrens; Alexandra de Raadt; Roel J. Bosker; Henk A. L. Kiers (Mach. Learn. Knowl. Extr., 2025)