Multi-step Media Adaptation with Semantic Web Services

An increase in diversity of devices that access the Internet, each with its own specifications, has gen- erated the need for adapted presentations for each specific platform. However, to dynamically adapt these presentations, information from three parties needs to be matched: a description of the target platform's capabilities and preferences, the struc- ture of the presentation and the media items it con- tains, and a survey of the available adaptation pro- cesses. We propose in this paper a solution that applies semantic annotation to describe these three parties. We use OWL-S to describe and chain the adaptation processes and CC/PP for communicat- ing the capabilities of the target platforms. This se- mantical annotation is based on a single ontology in OWL that specifies the concepts of the media adap- tation domain. The domain ontology also serves as a basis for specifying adaptation strategies by defin- ing a set of rules and constraints on the concepts involved.