Metadata Based Annotation Infrastructure Offers Flexibility and Extensibility for Collaborative Applications and Beyond.

Abstract

In this position paper, we describe three user scenarios that benefit from metadata based annotation infrastructure. We explain how a basic annotation schema can be extended to support new scenarios. We also describe and evaluate some other features and modifications that are useful when implementing these scenarios. The most laborious part in the scenarios is the design and implementation of new user interfaces; the metadata infrastructure itself easily supports the needs of the different applications and new schemas.