Patent ID: 7191175

Claim:
A system for arranging concept clusters in thematic neighborhood relationships in a two-dimensional visual display space, comprising: a set of clusters selected from a concept space comprising a multiplicity of clusters with concepts visualizing document content based on extracted concepts; a theme generator to identify a theme in each of a plurality of the clusters, each theme comprising at least one such concept ranked within the cluster; and a spine placer, comprising: a candidate spine selector to logically form a plurality of unique candidate spines comprising clusters commonly sharing at least one such concept; a candidate spine assigner to assign one or more of the clusters to one such candidate spine having a substantially best fit; a best fit candidate spine placer to identify each of the best fit candidate spines that are sufficiently unique from each other of the best fit candidate spines and to place each the-identified best fit candidate spine that was identified as sufficiently unique in a visual display space; and a remaining candidate spine placer to place each of the best fit candidate spines that were not identified as sufficiently unique in the visual display space next to an anchor cluster on the best fit candidate spine that is most similar and which was already placed in the visual display space.