Generalized measures of association for ranked data with an application to prediction accuracy |
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Authors: | Abba M Krieger Paul E Green |
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Institution: | (1) Wharton School, University of Pennsylvania, Steinberg Hall-Dietrich Hall, 19104 Philadelphia, PA, USA |
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Abstract: | A common practice in cross validation research in the behavioral sciences is to employ either the product moment correlation
or a simple tabulation of first-choice “hits” for measuring the accuracy with which various preference models predict subjects’
responses to a holdout sample of choice objects.
We propose a nonparametric approach for summarizing the accuracy of predicted rankings across a set of holdout-sample options.
The methods that we develop contain a novel way to deal with ties and an approach to the different weighting of rank positions. |
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Keywords: | Cross validation Nonparametric agreement Foot-rule Hit-rule |
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