1. Shiva Vafadar E-mail: Vafadar@aut.ac.ir 1 آزمايشکاه سيستم های هوشمند (http://ce.aut.ac.ir/islab) Requirements Engineering : A Roadmap Towards Modeling and Reasoning Support for Early-Phase Requirements Engineering Shiva Vafadar

2. E-mail: Vafadar@aut.ac.ir 2 آزمايشکاه سيستم های هوشمند (http://ce.aut.ac.ir/islab) Requirements Engineering : A Roadmap  Eric S. K. Yu, "Towards Modeling and Reasoning Support for Early-Phase Requirements Engineering," re, p. 226, Third IEEE International Symposium on Requirements Engineering (RE'97), 1997

3. Shiva Vafadar E-mail: Vafadar@aut.ac.ir 3 آزمايشکاه سيستم های هوشمند (http://ce.aut.ac.ir/islab) Requirements Engineering : A Roadmap Stating the problem  Problems in Requirements Statement ambiguous incomplete inconsistent informal

4. Shiva Vafadar E-mail: Vafadar@aut.ac.ir 4 آزمايشکاه سيستم های هوشمند (http://ce.aut.ac.ir/islab) Requirements Engineering : A Roadmap Why RE is Important  Having well-organized bodies of organizational and strategic knowledge would allow such knowledge to be shared  As more and more systems in organizations interconnect and interoperate, it is increasingly important to understand how systems cooperate  Dealing with change is one of the major problems

5. Shiva Vafadar E-mail: Vafadar@aut.ac.ir 5 آزمايشکاه سيستم های هوشمند (http://ce.aut.ac.ir/islab) Requirements Engineering : A Roadmap i* modelling  The i* framework for modelling and reasoning about organizational environments and their information systems The Strategic Dependency (SD) model The Strategic Rationale (SR) model  The central concept in i* is that of the intentional actor

6. Shiva Vafadar E-mail: Vafadar@aut.ac.ir 6 آزمايشکاه سيستم های هوشمند (http://ce.aut.ac.ir/islab) Requirements Engineering : A Roadmap Strategic Dependency model for meeting scheduling, without computer based scheduler

7. Shiva Vafadar E-mail: Vafadar@aut.ac.ir 7 آزمايشکاه سيستم های هوشمند (http://ce.aut.ac.ir/islab) Requirements Engineering : A Roadmap Strategic Dependency model for meeting scheduling with computer-based scheduler

8. Shiva Vafadar E-mail: Vafadar@aut.ac.ir 8 آزمايشکاه سيستم های هوشمند (http://ce.aut.ac.ir/islab) Requirements Engineering : A Roadmap Modeling stakeholder interests  The Strategic Dependency model provides one level of abstraction for describing organizational environments and their embedded information systems Showing External relationships among actors Hiding the intentional constructs within each actor  the Strategic Rationale model provides a more detailed level of modeling by looking “inside” actors to model internal intentional relationships

9. Shiva Vafadar E-mail: Vafadar@aut.ac.ir 9 آزمايشکاه سيستم های هوشمند (http://ce.aut.ac.ir/islab) Requirements Engineering : A Roadmap Strategic Rationale model for meeting scheduling

10. Shiva Vafadar E-mail: Vafadar@aut.ac.ir 10 آزمايشکاه سيستم های هوشمند (http://ce.aut.ac.ir/islab) Requirements Engineering : A Roadmap Strategic Rationale model for a computer- supported meeting

11. Shiva Vafadar E-mail: Vafadar@aut.ac.ir 11 آزمايشکاه سيستم های هوشمند (http://ce.aut.ac.ir/islab) Requirements Engineering : A Roadmap Support needs of early-phase RE  Knowledge representation and reasoning  Degree of formality  Incorporating intentionality  Multi-lateral intentional relationships  Distributed intentionality  Means-ends reasoning  Organizational actors