GaiusT 2.0: Evolution of a Framework for Annotating Legal Documents.

Semantic annotation technologies support the extraction of legal concepts, for example rights and obligations, from legal documents. For software engineers, the final goal is to identify compliance requirements a software system has to fulfill in order to comply with a law or regulation. That implies analyzing and annotating legal documents in prescriptive natural language, still an open problem for research in the field. In this paper we describe GaiusT 2.0, a system for extracting requirements from legal documents. GaiusT 2.0 is the result of the evolution of GaiusT, and has been designed and implemented as a web-based system intended to semi-automate the extraction process. Results of the application of GaiusT 2.0 show that the new version improves performance of the extraction process and also makes the tool more usable.