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| Title: | Statistical evaluation of rough set dependency analysis |
| Authors: |
Ivo Düntsch ,
Dept of Computer Science ,
Brock University ,
St Catherines, Ontario, L2S 3A1, Canada
Günther Gediga , Institut für Evaluation und Marktanalysen; Brinkstr. 19; D-49143 Jeggen, Germany (Equal authorship implied) |
| Status: | International Journal of Human-Computer Studies 46 (1997), 589 - 604 |
| Abstract: | Two simple statistical procedures, both based on randomization
techniques, are proposed to evaluate the validity of prediction based on
the approximation quality of attributes of rough set dependency
analysis. The first procedure tests the casualness of a prediction to
ensure that the prediction is not based on only a few (casual)
observations. The second procedure tests the conditional casualness of
an attribute within a prediction rule.
The procedures are applied to three data sets, originally published in the context of rough set analysis. We argue that several claims of these analyses need to be modified because of lacking validity, and that other possibly significant results were overlooked. |
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