5) As shown in Figure 1, rather than shipping directly from source points to each customer, customers are assumed to be collected into a limited number of groupings.
5) There is a bias toward too many source points with fewer demand clusters.
Third, a larger number of source points (up to 100) is tested than has been the case in previous studies (about 25).
Shipments made from source points to markets are assumed to vary in size from 500 lb.
The purpose of these rate estimating curves was to provide a systematic way of generating rates as distances between source points and demand cluster points changed throughout the clustering process.
Location modeling practice involves determining the number and location of source points (e.