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SmartStripes - looking under the hood of feature subset selection methods

: May, Thorsten; Davey, James; Ruppert, Tobias


Miksch, S. ; European Association for Computer Graphics -EUROGRAPHICS-:
EuroVA 2011, Second International Workshop on Visual Analytics : Held on May 31st, 2011, in Bergen, Norway
Aire-la-Ville: Eurographics Association, 2011
ISBN: 978-3-905673-82-1
International Workshop on Visual Analytics (EuroVA) <2, 2011, Bergen>
Symposium on Visualization (EuroVis) <13, 2011, Bergen>
Fraunhofer IGD ()
feature selection; visual analytic; multidimensional data visualization; visualization of multidimensional feature space

We propose a visualization method for the diagnosis and interactive refinement of automatic techniques for feature subset selection. So-called filter techniques use statistical ranking measures to identify the most useful combination of features for further analysis. Usually a measure is applied to all entities of a data-table. The influence of atypical entities can distort the result, but this distortion may be masked by the statistical aggregation. Clearly, feature and entity subset selection are highly interdependent. Our technique, SmartStripes, intends to make this interdependency visible.