¡Content-specific features (Foster
90)
lkey words, special
characters
¡
¡Style markers
lWord- or character-based
features (Yule 38)
¡length of words, vocabulary
richness
lFunction words (Mosteller
& Wallace 64)
l
¡Structural features
lEmail: Title or signature,
paragraph separators
(de Vel et
al.
01)
lCan generalize to HTML
tags
lTo think about: artifact of
authoring software?