For example: models having sticky topics over ngrams (Johnson, 2010), sticky HDP-HMM (Fox et al., 2008); models that are an amalgam of sequential models and topic models (Griffiths et al., 2005;Wal-lach, 2006;Gruber et al., 2007;Ahmed and Xing, 2008;Boyd-Graber and Blei, 2008;Du et al., 2010); or explicit models of time or other relevant features as a distinct latent variable (Wang and McCallum, 2006;Eisenstein et al., 2010).
sITs jointly models topic and individuals' tendency to control a conversation.