Requirements analysis

Requirements management

Product (mathematics)

Engineering

Exploit

Requirements elicitation

Agile software development

Computer security

Software development process

Systems engineering

Computer science

Management science

Software

Process management

Requirement

Mathematics

Geometry

Agile Unified Process

Software engineering

Programming language

Knowledge management

Requirements engineering

Software development

Information Systems

Innovative companies need an agile approach towards product and service requirements, to rapidly respond to and exploit changing conditions. The agile approach to requirements must nonetheless be systematic, especially with respect to accommodating legal and non-functional requirements. This paper examines how to support lightweight, agile requirements processes which can still be systematically modeled, analyzed and changed. We propose a framework, RE-KOMBINE, which is based on a propositional language for requirements modeling called Techne. We define operations on Techne models which tolerate the presence of inconsistencies. This paraconsistent reasoning is vital for supporting delayed commitment to particular design solutions. We evaluate these operations with an industry case study using two well-known formal analysis tools. Our evaluations show that the proposed framework scales to industry-sized requirements model, while still retaining (via propositional logic) the informality that is so useful during early requirements analysis.

Agile requirements engineering via paraconsistent reasoning