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user's belief is false but this is not really a problem. Instead of losing time
explaining the pros and cons of each possible itinerary, the system chooses to
answer the direct question and ignore the comment.
- Thesystemseesthatitisnottheshortestitineraryandthatthereisanother
possibility that takes just under an hour. Based on pragmatic priorities, it
considers, however, that answering the first act is much more important than
answering the second, and that it must favor generating a short answer above
all. It will thus answer with the strict minimum. If the user is not satisfied,
he/she will always ask a question about the other itinerary displayed.
- The system sees that the other possibility is indeed faster but also much
cheaper: prioritizing the sale of a more profitable ticket, it decides not to say
anything, hoping that the user will not ask any additional questions and remain
focused on this itinerary.
In either of these cases, answers such as “two hours, and it is the shortest
itinerary”, “two hours, the other itinerary is slightly shorter” or even “two
hours because of a change at Versailles” should be preferred. There is no
visible lie, however, unless by omission. It might seem hard to consider that a
system can deliberately lie, by giving false information, for example by
answering “one hour” when the journey lasts 2 hours: on the one hand, the
user might notice it and on the other hand, it requires a duplication of the
application's database in order to avoid any subsequent contradiction. We can
hope that no system designer ends up having to go to such ends.
To end on this example, let us note that there is a close relationship between
composite speech act management and dialogue management: in a case in
which the length is 2 hours and it is not the shortest itinerary, the system is
faced with several reaction possibilities, depending on the priorities given to
the two speech acts and the way to make the dialogue progress:
- When a user expresses a belief and this belief is false, the system can
consider it a priority to re-establish the truth. It can then overturn the linguistic
importance given to the first act then to the second, and decide to react only
to the second act (“no, it is not the shortest itinerary”) or to both acts, but by
starting the answer with the second act (“no, it is not the shortest: it takes two
hours”).Inthecaseofacooperatingsystem, itcanevenaddthetransmissionof
the shortest itinerary's identifier, that is of the solution that makes the comment
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