Downward Compatible Revision of Dialogue Annotation

摘要

This paper discusses some aspects of revising the ISO standard for dialogue act annotation (ISO 24617-2). The revision is aimed at making annotations using the ISO scheme more accurate and at providing more powerful tools for building natural language based dialogue systems, without invalidating the annotated resources that have been built, with the current version of the standard. In support of the revision of the standard, an analysis is provided of the downward compatibility of a revised annotation scheme with the original scheme at the levels of abstract syntax, concrete syntax, and semantics of annotations.