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  2. Cohen's kappa - Wikipedia

    en.wikipedia.org/wiki/Cohen's_kappa

    Cohen's kappa measures the agreement between two raters who each classify N items into C mutually exclusive categories. The definition of is =, where p o is the relative observed agreement among raters, and p e is the hypothetical probability of chance agreement, using the observed data to calculate the probabilities of each observer randomly selecting each category.

  3. Fleiss' kappa - Wikipedia

    en.wikipedia.org/wiki/Fleiss'_kappa

    Fleiss' kappa is a generalisation of Scott's pi statistic, [2] a statistical measure of inter-rater reliability. [3] It is also related to Cohen's kappa statistic and Youden's J statistic which may be more appropriate in certain instances. [4]

  4. Inter-rater reliability - Wikipedia

    en.wikipedia.org/wiki/Inter-rater_reliability

    Kappa is a way of measuring agreement or reliability, correcting for how often ratings might agree by chance. ... Online calculator for Inter-Rater Agreement Archived ...

  5. Scott's Pi - Wikipedia

    en.wikipedia.org/wiki/Scott's_Pi

    Scott's pi (named after William A Scott) is a statistic for measuring inter-rater reliability for nominal data in communication studies.Textual entities are annotated with categories by different annotators, and various measures are used to assess the extent of agreement between the annotators, one of which is Scott's pi.

  6. Youden's J statistic - Wikipedia

    en.wikipedia.org/wiki/Youden's_J_statistic

    When the true prevalences for the two positive variables are equal as assumed in Fleiss kappa and F-score, that is the number of positive predictions matches the number of positive classes in the dichotomous (two class) case, the different kappa and correlation measure collapse to identity with Youden's J, and recall, precision and F-score are ...

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  8. Kappa calculus - Wikipedia

    en.wikipedia.org/wiki/Kappa_calculus

    In mathematical logic, category theory, and computer science, kappa calculus is a formal system for defining first-order functions. Unlike lambda calculus, kappa calculus has no higher-order functions; its functions are not first class objects. Kappa-calculus can be regarded as "a reformulation of the first-order fragment of typed lambda ...

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