Fig. 1.
Text comparison with FFP. (A) An example of text comparison using the FFP method on English books, each converted into a long character string by removing all punctuation and spaces between words. Books of several different categories/genres are compared. At least 2 books are shown for most authors. High frequency stop features were removed and the feature resolution used is l = 9. (B) Lower limit. Using the children's book Peter Pan as an example, the lower limit of resolution is determined by lHmax. (C) Upper limit. Upper limit is determined by lCREmin.