Gestural spatialization in natural discourse segmentation


Human multimodal communicative behaviors form a tightly integrated whole. By matching up gestural features with a carefully time-tagged transcription of the speech, we can observe how gesture features and discourse unit transitions cohere. Space usage SU is a key gestural component. We summarize the theory of SU. In our experiments where subjects make action plans around a terrain map, such SU become key organizational loci around which the discourse may be built. Our vision-based approach extracts ‘SU histograms’ from stereo video describing the locus of motion of a speaker’s dominant hand. An ‘fuzzy correlation’ of these histograms yields a correlation space in which similar SU is clustered. By locating the cluster transitions we can locate topical shifts in the discourse. We show results by comparing the transitions extracted from a sentential coding with a psycholinguistic semantic coding. We do the same with a uniform distributed time units and demonstrate the ability to recover discourse transitions.

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@inproceedings{Quek2002GesturalSI, title={Gestural spatialization in natural discourse segmentation}, author={Francis K. H. Quek and David McNeill and Robert K. Bryll and Mary P. Harper}, booktitle={INTERSPEECH}, year={2002} }