APPLYING DOMAIN KNOWLEDGE TO MULTI-STEP MEDIA ADAPTATION BASED ON SEMANTIC WEB SERVICES

To publish media content on a variety of devices, informa- tion from three parties needs to be matched: a description of the target platform's capabilities and preferences, the structure of the content, and a survey of the available adaptation processes. Se- mantically rich descriptions offer the flexibility and expressiveness to cope with new emerging devices and media formats. We de- scribe a single domain ontology on media adaptation specified in OWL, that can describe these three parties using OWL-S and the CC/PP framework. In this document, we also outline how these rich semantic annotations help develop an adaptation strategy. We present an implementation of an architecture that uses property matching to establish adaptation axes and a service registry to sup- port (adaptation) service composition. Service composition tech- niques allow us to automatically create a chain of adaptation ser- vices, which will alter the original document to the needs of the target device.