1. A computer-implemented method to associate a semantic cluster with one or more categories of a predefined taxonomy, the method comprising: a) accepting, by a computer system including at least one computer, a semantic cluster; b) identifying, by the computer system, a set of a one or more scored concepts using the accepted cluster; c) identifying, by the computer system, a set of one or more categories using at least some of the one or more scored concepts; and d) associating, by the computer system, at least some of the one or more categories with the semantic cluster.