Index A Acoustic model, 17, 28, 33 Active appearance model, 99 Anaphors, 70 Articulated body models, 109 Attraction, 317 Audio-visual cues, 319 Augmented grammars, 66 Automatic speech recognition, 26 Expectation-Maximisation, 21 Expected risk, 10 F Face Detection, 95 Face Tracking, 96 Facial Expression, 103 Feature, 120, 127, 135 Feature extraction, 28, 128, 136 Form Filling, 79 Freeman Codes, 120, 131, 135, 136 Fuzzy search, 120, 134 B Behavioural outcomes, 312 C CALI library, 120, 128, 129, 133 Capacity, 11 Centering, 71 G Gaze Analysis, 100 Gesture recognition, 120, 126