Dialogue Management: Questions to Session 9

• What exactly is confusion between the user and the computer? Does the user always recognize a misunderstanding?
• What's the relation between initiative and social obligations?
• What's the 'discourse focus' (Chu-Carroll and Brown, 1998 -p.15, 7 lines from the bottom) are talking about? Which information is included?
• Does the more sophisticated approach to compute initiative (Chu-Caroll and Brown 1998) lead to a better dialogue behaviour? I mean, how pleased are people, who have tested the system? Are there any comparisons to systems which treat the initiative as a single thread of control?