The relative weighting of the facility, which is used to
rate the attractiveness, desirability, or bias of one
facility compared to another.
For example, a value of 2.0 could capture the
preference of customers who prefer, at a ratio of 2 to 1,
shopping in one facility over another facility. Example
factors that potentially affect facility weight include
square footage, neighborhood, and age of the building.
Weight values other than one are only honored by the
maximize market share and target market share
problem types.