How to: Exclude a Column from a Mining Model
When you create a new mining model, you may not want to use all the columns that exist in the mining structure on which the model is based. For example, you may want to vary the input columns for several different models to see how they affect the output column.
To exclude a column from a mining model
In the Mining Models tab of Data Mining Designer in Business Intelligence Development Studio, select the cell that corresponds to the column you want to exclude, under the appropriate mining model.
Select Ignore from the drop-down list box.