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A measure of the degree to which 2 raters agree. There is also a test of inter-rater agreement based on kappa. Use [inter-rater] if you are interested in other aspects of IRA, but not this specific measure.

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Kappa Statistic for Variable Number of Raters

I have $N$ documents. Each document $N_i$ is annotated by a variable number of raters $n_i \in [3, 10]$ into two categories. Is there a way to compute the Kappa statistic for these annotations? My und …
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