1. A system for generating cluster spine groupings for display, comprising: a set of spines, each spine comprising a grouping of clusters sharing a common concept and arranged linearly along a vector; a unique spine identifier to identify those spines that are unique from each other spine; a spine group module to select at least one remaining spine from the set of spines, to compare the remaining spine to the unique spines, and to form at least one spine group by grafting the remaining spine onto the unique spine that is most similar; and display to present the spine group.