When you create a column analysis in the studio, you can see a Datamining Type box next to each of the columns you want to analyze. The selected type in the box represents the data mining type of the associated column.
These data mining types help the studio to choose the appropriate metrics for the associated column since not all indicators (or metrics) can be computed on all data types.
Available data mining types are: Nominal, Interval, Unstructured Text and Other. The sections below describe these data mining types.