Product Attributes
When working with product attributes, the user can combine many of the fields within one rule. An example would be a rule to include 5 products where Brand=Sony and Price Band=Low. This would affect products that are both Sony and Low.
Applying a rule to include 5 Brand=Sony and then a separate rule to include 5 Price Band=Low would put 5 Sony in the assortment and 5 Low. This would not necessarily add 10 products to the assortment as some Sony products may sit in the Low Price Band and would therefore fulfil both criteria simultaneously.
Operators
Operators can ensure minimum and maximum representation of attributes are met.
= will always put the specified quantity of the selected attribute criteria into the assortment.
< and > act as => and =< , meaning that >5 will ensure that 5 or more of a selected attribute criteria are in the assortment.
Clusters
Selecting clusters can apply rules to specific clusters. When applying CDT rules to clusters it is useful to apply general level rules first, then apply rules to clusters, one cluster at a time, as jumping between clusters and cluster rules can overcomplicate things.
Space Breaks
Leaving the field empty applies selected attribute criteria to all space breaks.
It is possible to create non-concentric assortments using space breaks incorrectly.
For example, if a rule is used to force 1 Sony product into a medium assortment, the small and large assortments may not necessarily contain a Sony product, so the CDT rule would as a result create a non- concentric assortment.
A safe way to avoid non-concentric assortments is to include all larger space breaks in the space break selection, when trying to create a rule at a specific level.
For example, forcing 1 Sony product into the medium space break (as detailed above) would not generate a non-concentric assortment as long as the user also specifies large and extra-large space breaks in the same rule.