| other,67-5-E06-1035,ak | Examination of the effect of <term> features </term> shows that predicting top-level and predicting <term> subtopic boundaries </term> are two distinct tasks : ( 1 ) for predicting <term> subtopic boundaries </term> , the <term> lexical cohesion-based approach </term> alone can achieve competitive results , ( 2 ) for predicting <term> top-level boundaries </term> , the <term> machine learning approach </term> that combines <term> lexical-cohesion and conversational features </term> performs best , and ( 3 ) <term> conversational cues </term> , such as <term> cue phrases </term> and <term> overlapping speech </term> , are better indicators for the <term> top-level prediction task </term> . | #11530 Examination of the effect of features shows that predicting top-level and predicting subtopic boundaries are two distinct tasks: (1) for predicting subtopic boundaries, the lexical cohesion-based approach alone can achieve competitive results, (2) for predicting top-level boundaries, the machine learning approach that combines lexical-cohesion and conversational features performs best, and (3) conversational cues, such as cue phrases and overlapping speech, are better indicators for the top-level prediction task. |
