Specifying Manual Generalization
Before specifying Manual Generalization, note the following points:
In order to add generalization for a column, it must first be added to the Masking tab. Generalization processes the output value of the masking step. Usually, a Retain masking Rule is applied.
It is not required to have a generalization strategy for every column.
There are two areas that need to be specified for Manual Generalization:
Generalization Strategy.
Minimum Cluster Size. (This is an optional setting.)
To specify a Generalization Strategy:
Select Policies from the Navigation sidebar. The Policies page is displayed showing all the Policies that have been created.
Select a Policy by clicking on the Policy name in the Name column. The Edit Policy page is displayed showing all the columns together with any rules that have been assigned to the columns.
Select the Manual Generalization tab.
Click on Add Generalization Strategy to specify the generalization for a group of columns.
Select the columns to include in the strategy by clicking on the right chevron (>) to move the selected column to the window on the right of the dialog box. (You can use the Select Columns filter to display a subset of the columns.) All columns in the selection will be generalized in the same way.
Enter a name for the Generalization Strategy in the Name box. This is used to refer to the strategy in the Privitar user interface.
Select a Generalization Strategy Type from the Generalization Strategy Type list box. (For more information, about the strategy types that are available, see Manual Generalization Strategy Types.) Privitar supports different strategy types based on the type of value being processed.
Click Save to save the strategy.
Repeat the process as required to add generalization strategies for other columns.
Click Save to save the Policy, (or continue if you wish to specify a minimum cluster size).
To specify a Minimum Cluster Size:
Click the ON slider to enable the option.
Enter a value for k in the Minimum Cluster Size box.
Click Select Columns to add the columns to be included in the quasi-identifier analysis.
Click Save to save the Policy.
For more information about quasi-identifiers and minimum cluster sizes, see What is k-anonymity?.