Empirical Evaluation of User Models and User-Adapted Systems |
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| Authors: | Chin David N. |
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| Affiliation: | (1) Department of Information and Computer Sciences, University of Hawaii, 1680 East West Rd., Honolulu, HI, 96822, U.S.A. |
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| Abstract: | Empirical evaluations are needed to determine which users are helped or hindered by user-adapted interaction in user modeling systems. A review of past UMUAI articles reveals insufficient empirical evaluations, but an encouraging upward trend. Rules of thumb for experimental design, useful tests for covariates, and common threats to experimental validity are presented. Reporting standards including effect size and power are proposed. |
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| Keywords: | empirical evaluation experimental design covariant variables effect size treatment magnitude power sensitivity |
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