Pruning Report

The Pruning Report displays statistics about the results of data pruning.

Figure 3-15 DT Pruning Report

Description of "Figure 3-15 DT Pruning Report"

The Pruning Report contains the following fields:

Table 3-18 Pruning Report Fields

Field	Description
Number of Models Generated	The number of DT models produced by the calculation.
Number of Models Pruned	The number of DT models pruned by the calculation.
Categories with All Models Pruned	The names of the categories for which all DT models have been pruned.
Positive or Null Assortment Elasticity	The Assortment Elasticity (AE) value is a negative number used in calculating substitutable demand percentages and demand transference effects. A positive AE value may be produced as a result of missing or unreliable input data for some partitions. Such meaningless transference effects must be pruned. In addition, if a null AE value is generated, it must also be pruned.
Substitutable Demand	Substitutable demand is a measure of how much demand is retained by the rest of the assortment when an item that is removed. When the item is removed, a portion of its demand is transferred to the remainder of items in the assortment. These values are populated when you set up the time intervals in the Manage Models tab and run the calculation there.