Towards a unified metamodel for i*

i* is a framework for goal-oriented requirements modeling. This framework contains an organizational modeling language defined by actors and dependencies among them. Although i* has been widely used, it is still hard to work with it due to its diversity of variants. In this paper, we propose a unified metamodel that presents elements of two well-known variants of i*. We show how OCL restrictions can be applied this metamodel in order to generate a specific variant. In doing so, we intend to unify the efforts of i* community. This metamodel can be useful when developing generic tools for i*, as well as to reason about i* language. Moreover, it makes it easier to extend the i* language. Thus, our proposal is an attempt towards the unification on i* variants by considering similarities and differences among them.

[1]  John Mylopoulos,et al.  Filling the Gap between Requirements Engineering and Public Key/Trust Management Infrastructures , 2004, EuroPKI.

[2]  Patrícia C. A. R. Tedesco,et al.  Modeling Multi-Agent Systems using UML , 2006 .

[3]  Carme Quer,et al.  A Comparative Analysis of i*-Based Agent-Oriented Modeling Languages , 2005, SEKE.

[4]  John Mylopoulos,et al.  Towards requirements-driven information systems engineering: the Tropos project , 2002, Inf. Syst..

[5]  Martin Gogolla.  Unified Modeling Language , 2009, Encyclopedia of Database Systems.

[6]  Lidia Fuentes,et al.  Towards MDD Transformations from AO Requirements into AO Architecture , 2006, EWSA.

[7]  Jean Bézivin,et al.  On the unification power of models , 2005, Software & Systems Modeling.

[8]  Fausto Giunchiglia,et al.  Tropos: An Agent-Oriented Software Development Methodology , 2004, Autonomous Agents and Multi-Agent Systems.

[9]  John Mylopoulos,et al.  The Tropos Metamodel and its Use , 2005, Informatica.

[10]  Sol Jaffe Greenspan,et al.  Requirements modeling: a knowledge representation approach to software requirements definition , 1984 .

[11]  Jean Bézivin,et al.  In Search of a Basic Principle for Model Driven Engineering , 2004 .

[12]  Tom Mens,et al.  A Taxonomy of Model Transformation , 2006, GRaMoT@GPCE.

[13]  Franco Zambonelli,et al.  Developing multiagent systems: The Gaia methodology , 2003, TSEM.

[14]  Bedir Tekinerdogan,et al.  Special issue on Early aspects: aspect-oriented requirements engineering and architecture design , 2004, IEE Proc. Softw..

[15]  Julio Cesar Sampaio do Prado Leite,et al.  Understanding the Strategic Actor Diagram: an Exercise of Meta Modeling , 2007, WER.

[16]  John Mylopoulos,et al.  Specifying and analyzing early requirements in Tropos , 2004, Requirements Engineering.

[17]  John Mylopoulos,et al.  Reasoning with Goal Models , 2002, ER.

[18]  John Mylopoulos,et al.  Representing and Using Nonfunctional Requirements: A Process-Oriented Approach , 1992, IEEE Trans. Software Eng..

[19]  Bernhard Rumpe,et al.  Meaningful modeling: what's the semantics of "semantics"? , 2004, Computer.