In the recent research work on multi-media corpora the notion of context appears to be crucial both on the theoretical level and the applied level. The aim of this paper is to analyze the three levels which are relevant to the treatment of contextual information in multi-media corpora (i.e. annotation, storage, retrieval), and the different solutions which are resorted to in recently implemented systems to meet the need for a multi-layered, multi-linked annotation, and a hierarchically organized retrieval of contextual data.
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