Recovering software requirements from system-user interaction traces
SEKE '02 Proceedings of the 14th international conference on Software engineering and knowledge engineering
Software Engineering
Remodularizing Java programs for improved locality of feature implementations in source code
Science of Computer Programming
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For any re-engineering of the legacy system such as alteration, modification or complete rebuild, to understand the original requirements can be important and sometimes critical. However, experience in industry shows one should never assume the availability of the system documents; even if they are available, the documents may be out-of-date.The semiotic approach we present in this paper, aims at recovering requirements by studying the legacy system's behaviour. Using this approach, the requirements recovery consists of investigation activities at three major stages with a set of techniques for analysis and representation. The approach guides the analysis to be conducted from a number of angles at certain levels of detail using various software engineering and semiotic techniques. These techniques enable one, for derivation of the requirements, to study a legacy system from perspectives of different stakeholders, from its interaction with the users in the business context, and from information contents and processes of system operations. A case study applying this approach to recover requirements for a university's multi-site library is presented.