Specify the binning strategy for categorical attributes. This step displays the categorical attributes; for each attribute, it displays the name, the sample size (number of non-null values), the distinct count (the number of distinct non-null values), the mode for the attribute (the most frequent value), and the discretization strategy currently in effect for an attribute (under the heading Transformation.
If the Discretization wizard is launched from a Mining Activity, a default binning strategy will be selected for you. If the wizard is invoked directly, there is no default binning strategy.
To generate a recommended default strategy for a particular type of mining problem, click Default. You can modify this strategy, if you wish.
To see a histogram for an attribute, select the attribute, and click Histogram; a histogram and some statistics are displayed for the attribute. If the attribute was unbinned, the default binning strategy is applied, and the attribute is marked as Binned when you close the Histogram dialog box.
Once an attribute is binned, the Transformation column indicates the type of binning applied to the attribute.
You can use one of the following binning strategies for a selected attribute:
Other
bin. You can specify Top N for several attributes at a time. To remove the binning strategy for an attribute, select the attribute. Click Clear to remove the binning strategies. You can use Clear for one or more selected attributes. You can now redefine the strategey or strategies.
When you are done defining binning strategies, click Next to continue.
Copyright © 2006, 2008, Oracle. All rights reserved.