hw8.md

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Feature Selection

Fire up the WEKA GUI using

    java -Xmx2048M -jar weka.jar &

Using the directions shown in class, for six data sets:

• Perform feature selection using the J48 M trick;
• Perform wrapper feature selection (on some smaller data sets);
• Perform CFS feature subset selection (on some larger data sets).

Hand-in a table showing, for six data sets for (i) number of selected features, (ii) precision and (iii) recall numbers on the majority class in each data set:

• Using all features;
• Just using the selected features.