Cohen's quadratically weighted kappa is higher than linearly weighted kappa for tridiagonal agreement tables

MJ Warrens - Statistical Methodology, 2012 - Elsevier
Cohen’s weighted kappa is a popular descriptive statistic for measuring the agreement
between two raters on an ordinal scale. Popular weights for weighted kappaweighted kappa is …

Weighted specific-category kappa measure of interobserver agreement

TO Kvålseth - Psychological reports, 2003 - journals.sagepub.com
… We propose a Kappa-based weighted measure (K,,) of agreement on some specific category
s, with K, being a weighted average of all K,$. Therefore, while Cohen's K, is a summary …

Why Cohen's Kappa should be avoided as performance measure in classification

R Delgado, XA Tibau - PloS one, 2019 - journals.plos.org
We show that Cohen’s Kappa and Matthews Correlation Coefficient (MCC), both extended
and contrasted measures of performance in multi-class classification, are correlated in most …

Five ways to look at Cohen's kappa

MJ Warrens - Journal of Psychology & Psychotherapy, 2015 - research.rug.nl
… The overall kappa is an average of all kappas that are obtained … kappa is a weighted average
of these kappas if we use the denominators of the kappas as weights. A weighted average

[PDF][PDF] A comparison of Cohen's kappa and agreement coefficients by Corrado Gini

MJ Warrens - … Research and Reviews in Applie d …, 2013 - scholarlypublications …
… In this paper we compare Cohen's kappa to three other agreement coefficients that have …
Cohen's quadratically weighted kappa is higher than linearly weighted kappa for tridiagonal …

Interrater Agreement Measures: Comments on Kappan, Cohen's Kappa, Scott's π, and Aickin's α

LM Hsu, R Field - Understanding Statistics, 2003 - Taylor & Francis
… critics of Cohen’s kappa, we argue that Cohen’s kappa (… ’s kappa is also compared to two
other kappa-type statistics (Scott’s, 1955, π; Aickin’s, 1990, α). Unlike Scott’s π, Cohen’s kappa

Some paradoxical results for the quadratically weighted kappa

MJ Warrens - Psychometrika, 2012 - Springer
… ℓ can be interpreted as a weighted average of the 2×2 kappas… as a weighted average of
the linearly weighted kappas … we introduce Cohen’s unweighted κ and weighted kappas κ …

[PDF][PDF] The problem with kappa

DMW Powers - Proceedings of the 13th Conference of the …, 2012 - aclanthology.org
weighted average of Recall and Inverse Recall (probability that negative instances are correctly
predicted), where the weighting … as Cohen Kappa, and we will thus call it Powers Kappa, …

Cohen's kappa coefficient as a measure to assess classification improvement following the addition of a new marker to a regression model

B Więckowska, KB Kubiak, P Jóźwiak… - International journal of …, 2022 - mdpi.com
… of Kappa, such as stratified Kappa [12] and weighted Kappa [… The aim of this work is to
extend the Cohen Kappa coefficient … described by the Cohen Kappa coefficient with continuous, …

Interval estimation for Cohen's kappa as a measure of agreement

NJM Blackman, JJ Koval - Statistics in medicine, 2000 - Wiley Online Library
… The most widely used measure of this type is Cohen's kappa [5]. Cohen's kappa was originally
introduced as a chance-corrected measure of agreement between two raters for normal …