an interactive version of the arc diagram visualization metaphor which is able to represent degrees of repetition at varying scales within a linear sequence for documents ranging from Bob Dylan songs to State of Union addresses. diagram arcs illustrate the similarity structure within a text document by drawing arcs connecting segments of a document that share similar vocabulary. rather than using arcs to connect identical patterns within a document this particular implementation instead connects segments that contain similar words.

[link: & |thnkx Jeff]

see also the original by Martin Wattenberg & music chart arcs & email thread arcs & radial document diagram & document icons.