1. A text visualization method comprising: receiving vectors that characterize conceptual content of a plurality of text documents, each document being represented by a vector of arbitrary length; and displaying a multi-dimensional representation of the document collection that conveys information about topics and subtopics described by the plurality of text documents, each document being represented by a multi-dimensional glyph, the displaying including sorting the glyphs into groups and arranging the groups into clusters, and deriving centroids of clusters and down-projecting the centroids, such that clusters containing documents that are conceptually similar are located together in near proximity.