Novarun Deb is a Research Associate at the Department of Environmental Sciences, Informatics, and Statistics, Ca' Foscari University, Italy. He received his Master’s and Ph.D. in Computer Science & Engineering from the University of Calcutta, India. His current research interests include computer networking, software engineering, requirements engineering, model-based development, wireless ad hoc networks, wireless mesh networks, and system modelling. He has published many papers in these areas in international journals and conference proceedings. He has a few book chapters and a patent on data structures as well.Nabendu Chaki is a senior member of the IEEE and a Professor at the Department of Computer Science & Engineering, University of Calcutta, India. Besides editing several volumes in LNCS, Springer, and other series, Dr. Chaki has authored several books with respected publishers like Taylor and Francis (CRC Press), Pearson Education, Springer, etc. Having also publishedmore than 100 refereed research papers in journals and international conference proceedings, his areas of interest include software engineering, distributed systems, and network security. Dr. Chaki has also served as a Research Assistant Professor at the US Naval Postgraduate School, Monterey, CA. He is a visiting faculty member for many universities including Ca’Foscari University, Venice, Italy. Dr. Chaki has contributed to the IEEE Computer Society’s SWEBOK v3 as a Knowledge Area Editor for Mathematical Foundations. He currently serves as an editorial board member for many international journals, and has been the founding Chapter Chair of the ACM Professional Chapter in Calcutta, India, since January 2014.

• Introduction.- State-of-the-Art.- i∗ and Enterprise Hierarchies.- Model Checking with i∗.- Goal Model Maintenance.- Conclusion and Future Work.

Novarun Deb is a Research Associate at the Department of Environmental Sciences, Informatics, and Statistics, Ca' Foscari University, Italy. He received his Master’s and Ph.D. in Computer Science & Engineering from the University of Calcutta, India. His current research interests include computer networking, software engineering, requirements engineering, model-based development, wireless ad hoc networks, wireless mesh networks, and system modelling. He has published many papers in these areas in international journals and conference proceedings. He has a few book chapters and a patent on data structures as well.Nabendu Chaki is a senior member of the IEEE and a Professor at the Department of Computer Science & Engineering, University of Calcutta, India. Besides editing several volumes in LNCS, Springer, and other series, Dr. Chaki has authored several books with respected publishers like Taylor and Francis (CRC Press), Pearson Education, Springer, etc. Having also publishedmore than 100 refereed research papers in journals and international conference proceedings, his areas of interest include software engineering, distributed systems, and network security. Dr. Chaki has also served as a Research Assistant Professor at the US Naval Postgraduate School, Monterey, CA. He is a visiting faculty member for many universities including Ca’Foscari University, Venice, Italy. Dr. Chaki has contributed to the IEEE Computer Society’s SWEBOK v3 as a Knowledge Area Editor for Mathematical Foundations. He currently serves as an editorial board member for many international journals, and has been the founding Chapter Chair of the ACM Professional Chapter in Calcutta, India, since January 2014.

• Introduction.- State-of-the-Art.- i∗ and Enterprise Hierarchies.- Model Checking with i∗.- Goal Model Maintenance.- Conclusion and Future Work.

Novarun Deb is a Research Associate at the Department of Environmental Sciences, Informatics, and Statistics, Ca' Foscari University, Italy. He received his Master’s and Ph.D. in Computer Science & Engineering from the University of Calcutta, India. His current research interests include computer networking, software engineering, requirements engineering, model-based development, wireless ad hoc networks, wireless mesh networks, and system modelling. He has published many papers in these areas in international journals and conference proceedings. He has a few book chapters and a patent on data structures as well.Nabendu Chaki is a senior member of the IEEE and a Professor at the Department of Computer Science & Engineering, University of Calcutta, India. Besides editing several volumes in LNCS, Springer, and other series, Dr. Chaki has authored several books with respected publishers like Taylor and Francis (CRC Press), Pearson Education, Springer, etc. Having also publishedmore than 100 refereed research papers in journals and international conference proceedings, his areas of interest include software engineering, distributed systems, and network security. Dr. Chaki has also served as a Research Assistant Professor at the US Naval Postgraduate School, Monterey, CA. He is a visiting faculty member for many universities including Ca’Foscari University, Venice, Italy. Dr. Chaki has contributed to the IEEE Computer Society’s SWEBOK v3 as a Knowledge Area Editor for Mathematical Foundations. He currently serves as an editorial board member for many international journals, and has been the founding Chapter Chair of the ACM Professional Chapter in Calcutta, India, since January 2014.

• Introduction.- State-of-the-Art.- i∗ and Enterprise Hierarchies.- Model Checking with i∗.- Goal Model Maintenance.- Conclusion and Future Work.