
402 Coverbal Synchrony in Human-Machine Interaction
4.6 Evaluation of schemes for social signal fusion
Since it is usually obvious which intention a user aims to convey
to a system, the evaluation of schemes for semantic fusion is rather
straightforward. On the opposite, the evaluation of fusion schemes
for social and emotional signals raises a number of challenges. First
of all, it is not obvious how to acquire ground truth data against
which to evaluate the performance of automated emotion-recognition
components. Users show a great deal of individuality in their emotional
responses, and there is no clear mapping between behavioral cues and ...