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2002 Feb 05
2
Measures of agreement
...classification (specifically, a Naive Bayes classifier and a kNN classifier) and I would now like to calculate some inter-rater reliability scores. I have the data in a PostgreSQL database, such that for each document, each measure (there are 9) has three variables: ap_(measure), nb_(measure), and knn_(measure). ap is me (Andrew Perrin), nb is Naive Bayes, and knn is knn. I have two questions: 1.) I have used the code in the Using R for Psychology... paper to calculate Cohen's Kappa (kappaFor2). It returns a (fairly low) kappa, but also some warnings I don't understand: > kappaFor2(ap...