(2003) for segmenting meeting transcripts into major topical units.
this study uses the following features: (1) lexical cohesion features: the raw lexical cohesion score and probability of topic shift indicated by the sharpness of change in lexical cohesion score, and (2) conversational features: the number of cue phrases in an analysis window of 5 seconds preceding and following the potential boundary, and other interactional features, including similarity of speaker activity (measured as a change in probability distribution of number of words spoken by each speaker) within 5 seconds preceding and following each potential boundary, the amount of overlapping speech within 30 seconds following each potential boundary, and the amount of silence between speaker turns within 30 seconds preceding each potential boundary.