Object-oriented software construction (2nd ed.)
Object-oriented software construction (2nd ed.)
Database abstractions: aggregation and generalization
ACM Transactions on Database Systems (TODS)
Modelling strategic relationships for process reengineering
Modelling strategic relationships for process reengineering
Knowledge Representation and Reasoning
Knowledge Representation and Reasoning
Goal-Based Modeling of Dynamically Adaptive System Requirements
ECBS '08 Proceedings of the 15th Annual IEEE International Conference and Workshop on the Engineering of Computer Based Systems
Towards interoperability of i* models using iStarML
Computer Standards & Interfaces
Finding solutions in goal models: an interactive backward reasoning approach
ER'10 Proceedings of the 29th international conference on Conceptual modeling
A metamodelling approach for i* model translations
CAiSE'11 Proceedings of the 23rd international conference on Advanced information systems engineering
Making explicit some impliciti* language decisions
ER'11 Proceedings of the 30th international conference on Conceptual modeling
On the lightweight use of goal-oriented models for software package selection
CAiSE'05 Proceedings of the 17th international conference on Advanced Information Systems Engineering
Towards a comprehensive framework for secure systems development
CAiSE'06 Proceedings of the 18th international conference on Advanced Information Systems Engineering
Changing attitudes towards the generation of architectural models
Journal of Systems and Software
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The specialization relationship is offered by the i* modeling language through the is-a construct defined over actors (a subactor is-a superactor). Although the overall meaning of this construct is highly intuitive, its semantics when it comes to the fine-grained level of strategic rationale (SR) diagrams is not defined, hampering seriously its appropriate use. In this paper we provide a formal definition of the specialization relationship at the level of i* SR diagrams. We root our proposal over existing work in conceptual modeling in general, and object-orientation in particular. Also, we use the results of a survey conducted in the i* community that provides some hints about what i* modelers expect from specialization. As a consequence of this twofold analysis, we identify, define and specify two specialization operations, extension and refinement, that can be applied over SR diagrams. Correctness conditions for them are also clearly stated. The result of our work is a formal proposal of specialization for i* that allows its use in a well-defined manner.