Metadata and Annotation Models Clause Samples

Metadata and Annotation Models. The metadata and annotation models are based upon a number of characterisations of the primitives which define the gCube storage model, namely Information Objects and directed, binary relationships between such objects. Based on such characterisations, we can define the metadata and annotation models so as to follow closely the intuition and yet preserve a degree of semi-formal rigour. • The primary role of a relationships is a characterisation of its intended semantics. We assume that the secondary role of a relationship is an optional specialisation of the primary role. Whenever convenient, we say that a relationship with (primary or secondary) role R is an R-relationships and that its source and target are an R-source or an R-target. If R1 and R2 are, respectively, the primary and secondary role of a relationship, then a R2-relationship is also an R1-relationship.