1. A computerized method comprising: receiving, with a multimedia database system, influence information associated with a plurality of artists, the influence information comprising data that represents influence relationships between pairs of the plurality of artists; generating a first directed graph from the influence information, the first directed graph comprising nodes and edges, where each node represents an artist, and where a pair of nodes is coupled with a directed edge, the directed edge representing an influence of a first artist represented by a first node on a second artist represented by a second node; computing artist influence data for each of the artists, where the computing uses the first directed graph and the artist influence data includes information for an artist that influences another artist when the corresponding nodes are not coupled by a directed edge; and generating, with a multimedia database system, a second directed graph using the first directed graph and the artist influence data.