Grounding Extension 3

Modeling grounding (3rd).

Delayed Confirmation

A third option for systems that request a lot of information from the user is to have delayed implicit requests for confirmation. That means adding for some states other states that asks the user to confirm all the information that the system has elicited in the previous states. This method avoids prolonging dialogues too much.

A dialogue with such a system might look as follows:

User:	Elevator.
System:	Please specify the city for which you want a weather forecast.
User:	Saarbrücken.
System:	OK, For when?
User:	Tomorrow afternoon.
System:	So, you want a weather forecast for Saarbrücken for tomorrow afternoon.
User:	Okay.
System:	[...]

Or:

User:	Elevator.
System:	Please specify the city for which you want a weather forecast.
User:	Saarbrücken.
System:	OK, For when?
User:	Tomorrow afternoon.
System:	So, you want a weather forecast for Stuttgart for tomorrow afternoon.
User:	No, that's wrong.
System:	Please specify the city for which you want a weather forecast.

The system first collects some user input and then requires confirmation for all the collected information at once. This method is already quite advanced, since it requires some kind of way for storing all of the previous answers recognised before the confirmation is done.