9. A system, comprising: a processor; a data importation element configured to control the processor to assemble an input data set based on performance data for delivered invitational content with respect to known contexts, content metadata for the delivered invitational content, and context metadata for the known contexts; a cluster extraction element configured to control the processor to identify clusters based on the input data, each of the clusters associating at least one of the delivered invitational content and at least one of the known contexts; a data exporter element configured to control the processor to generate first rank values for the clusters with respect to the at least one of the delivered invitational content, generating second rank values for the clusters with respect to the at least one of the known contexts, computing total rank values for the identified known contexts, and storing a dataset for a database, the dataset comprising at least the delivered invitational content, the known contexts, the identified clusters, the first rank values, the second rank values, the total rank values, content metadata for the delivered invitational content, and context metadata for the known contexts, wherein computing total rank values for each of the identified known contexts comprises: identifying one or more rank paths associated with the one of the identified known contexts, calculating a product of first and second rank values associated with each of the one or more rank paths, and calculating a total rank value for the one of the identified known contexts as a sum of the rank path products for each of the one or more rank paths.
11. The system of claim 9 , wherein the cluster extraction element is further configured to control the processor to determine an initial membership for the clusters from the input data set using an extended Fiedler method and defining the clusters to include the delivered invitational content and the known contexts within a distance based on the moments of a Gaussian probability function based on the initial membership.