摘要：The paper discusses an Annotea-based approach for the development of annotation services for digital multimedia objects used as fundamental building blocks of compound learning objects created in the SINUS platform. Annotea provides an annotation protocol to support collaborative Semantic Web-based annotation of digital resources accessible through the Web. It provides a model whereby a user may attach supplementary information to a resource or part of a resource in the form of a simple textual comment, a hyperlink to another web page, a local file or a semantic tag extracted from a formal ontology or controlled vocabulary. Such annotations can be used for the implementation of enhanced search capabilities in the SINUS platform. SINUS annotation services will enable communities of experts to collaboratively select and annotate digital resources with annotations that are based on domain-specific terms from either controlled vocabularies and/or ontologies.
