منابع مشابه
High Agreement and High Prevalence: The Paradox of Cohen’s Kappa
Background Cohen's Kappa is the most used agreement statistic in literature. However, under certain conditions, it is affected by a paradox which returns biased estimates of the statistic itself. Objective The aim of the study is to provide sufficient information which allows the reader to make an informed choice of the correct agreement measure, by underlining some optimal properties of Gwet...
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Suppose two judges each classify a group of objects into one of several nominal categories. It has been observed in the literature that, for fixed observed agreement between the judges, Cohen’s kappa penalizes judges with similar marginals compared to judges who produce different marginals. This paper presents a formal proof of this phenomenon.
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ژورنال
عنوان ژورنال: Shoulder & Elbow
سال: 2018
ISSN: 1758-5732,1758-5740
DOI: 10.1177/1758573218791813