
78 Coverbal Synchrony in Human-Machine Interaction
Human emotions occur in many variations and are often not
directly accessible even for human experts when annotating affective
corpora. Hence, a severe issue in affective computing is that the
labeling procedure is inevitably expensive and time consuming.
It would be desirable to incorporate unlabeled data in the overall
classification process. This can be done either to improve a statistical
learning process or to support a human expert in an interactive labeling
process (Meudt et al., 2012). In order to integrate unlabeled data in
a supervised machine learning procedure, two different partially ...