Multimodal Output Management - Man-Machine Dialogue: Design and Challenges - page 147

The multimedia presenter implements these decisions, that is it decides on
the how. This is carried out by choosing the device(s) to be used, allocating
the information to determine the part given to each device, dividing it to
allocate the presentation during the imparted time, choosing the way in which
to highlight the part in question, potentially managing a display-specific
interface, with, for example, graphical metaphors such as sliders and
navigation buttons in the space occupied by the information.
We can summarize the preoccupations of a multimedia presenter in a set
of general principles such as the Gricean maxims. The design of systems
including a multimedia presenter requires finely taking into account pragmatic
and cognitive aspects of communication, and this is why these principles are
uttered, and still have to be materialized (such as the Gricean maxims) by a
theory such as relevance theory [SPE 95]. A first aspect concerns taking into
account the information characteristics and their anchoring in the dialogue
history, which involves, in the case of communication including MMD and
MMI, the interaction history storing all the direct manipulations carried out
on the MMI objects. The first principles for natural, adaptive and user-centric
multimedia presenters design are as follows:
- present well by allocating the information to the communication channels
in a relevant manner;
- present well by taking into account the rendition and valorization of the
information on each communication channel;
- present well by using the message's semantic content in a relevant
manner;
- present well by maintaining coherence and cohesion with the previous
messages.
A second aspect covers taking into account the terminal and the physical
and situational environment's characteristics:
- present well by using the presentation means in a relevant manner;
- present well by using the presentation conditions in a relevant manner.
We then arrive at the phase of taking the user into account, with his/her
physicalandcognitiveabilities, his/herrolesinthetaskinprogress, andhis/her