Analysing for Authorship with the Cusum Technique
Andrew Morton, widely regarded as the world authority on authorship attribution, developed the cusum (or QSUM) technique in 1988 after 40 years of research. His method identifies authorship irrespective of genre, over long periods of time, and from an early age. Since 1990 it has been accepted in law courts as a sound identifier of disputed utterance, and has been Read More ›