32. The system according to claim 31 , wherein a PPS comprises a plurality of classification levels defining the payment, the plurality of classification levels comprising: a driving element level including a set of driving elements used to encode the service provider activity at a transactional level; a group level including a set of groups, each group mapping one or more driving elements to a particular payment rate; and a category level including a set of categories, each category being mapped to one or more of the groups according to predetermined industry classification schemes.
32. The system according to claim 31 , wherein a PPS comprises a plurality of classification levels defining the payment, the plurality of classification levels comprising: a driving element level including a set of driving elements used to encode the service provider activity at a transactional level; a group level including a set of groups, each group mapping one or more driving elements to a particular payment rate; and a category level including a set of categories, each category being mapped to one or more of the groups according to predetermined industry classification schemes. 33. The system according to claim 32 , wherein the summary variables comprise one of: summary variables calculated across the driving element level, calculated within the driving elements, calculated across the group level, calculated within the groups, calculated across the category level, and calculated within the categories.