Sotirios Liaskos
3051 TEL Building
School of Information Technology
York University
4700 Keele St
Toronto, ON, Canada, M3J 1P3

phone: + 1 416 736 2100 (ext. 33862)
e-mail: liaskos@yorku.ca
home: http://www.yorku.ca/liaskos
lab url:
http://www.entsyst-lab.ca/


 Profile

-Associate Professor at the School of Information Technology at York University.
-Head of the Enterprize Systems Lab, and member of the Software Engineering Group at York University.
-PhD./MSc., Department of Computer Science, University of Toronto.
-Diploma of Engineering, School of Electrical and Computer Engineering, National Technical University of Athens (NTUA).

My research is in the area of Information Systems Engineering and in particular Requirements Engineering. My interest over the past years has been goal modeling and analysis and particularly the application of conceptual modeling and artificial intelligence to manage requirements and goal variability. Our recent work with my colleagues deals with representing and reasoning about stakeholder preferences within goal models as well as with the translation of stakeholder customization requirements into behavioral configurations of the software system to by customized. Our techniques are aimed at facilitating the customization and adaptation of large enterprise systems, such as Enterprise Resource Planning Systems (ERPs). Lately, we have also started doing empirical and theoretical work on fundamental aspects of intentional models such as model comprehensibility, model elicitation and theories thereof.

For more information and current opportunities please visit the pages of the Enterprize Systems Lab or contact me at the above address.

 Publications

Fatima Alabdulkareem, Nick Cercone, and Sotirios Liaskos. Goal and Preference Identification through Natural Language. In Proceedings of the 23rd IEEE International Requirements Engineering Conference (RE'15). Ottawa, Canada. pp 56-65. 2015. (pdf)

Saeideh Hamidi, Perilkis Andritsos and Sotirios Liaskos. Constructing Adaptive Configuration Dialogs using Crowd Data. In Proceedings of the 29th ACM/IEEE International Conference on Automated Software Engineering (ASE'14). Vsters, Sweden. pp 485-490. 2014. (pdf) (ACM)

Sotirios Liaskos, Shakil M. Khan, Mikhail Soutchanski and John Mylopoulos. Modeling and Reasoning with Decision-Theoretic Goals. In Proceedings of the 32th International Conference on Conceptual Modeling (ER'13). Hong-Kong, China. pp 19-32. 2013. (pdf) (the final publication is available at  Springer)

Sotirios Liaskos, Saeideh Hamidi and Rina Jalman. Qualitative vs. Quantitative Contribution Labels in Goal Models: Setting an Experimental Agenda. In Proceedings of the 5th International i* Workshop (iStar'13). Valencia, Spain. pp 37-42. 2013. (CEUR link)

Marsha Chechik, Jocelyn Simmonds, Sotirios Liaskos, Shiva Nejati, Mehrdad Sabetzadeh and Rick Salay. PWWM: A Personal Web Workflow Methodology. The Personal Web. pp 11-48. 2013.

Sotirios Liaskos, Marina Daoud Jungblut and John Mylopoulos. From intentions to code: exploring the life of user goals in two web-based systems. IET Software, 6(2). pp 103-113. 2012.

Sotirios Liaskos, Shakil M. Khan, Marin Litoiu, Marina Daoud Jungblut, Vyacheslav Rogozhkin and John Mylopoulos. Behavioral adaptation of information systems through goal models. Information Systems, 37(8). pp 767-783. 2012.

Sotirios Liaskos, Rina Jalman and Jorge Aranda. On eliciting contribution measures in goal models. In Proceedings of the 20th IEEE International Requirements Engineering Conference (RE'12). Chicago, IL, USA. pp 221-230. 2012. (pdf) (IEEE Explore)

Sotirios Liaskos, Sheila A. McIlraith, Shirin Sohrabi and John Mylopoulos. Representing and reasoning about preferences in requirements engineering. Requirements Engineering, 16(3). pp 227-249. 2011.

Sotirios Liaskos, Marin Litoiu, Marina Daoud Jungblut and John Mylopoulos. Goal-Based Behavioral Customization of Information Systems. In Proceedings of the 23rd International Conference on Advanced Information Systems Engineering (CAiSE'11). London, UK. pp 77-92. 2011. (long techrep) (the original publication is available at  Springer)

Scott Munro, Sotirios Liaskos and Jorge Aranda. The Mysteries of Goal Decomposition. In Proceedings of the 5th International i* Workshop (iStar'11). Trento, Italy. pp 49-54. 2011. (pdf)

Sotirios Liaskos and Vyacheslav Rogozhkin. Applying preference-based customization. In Proceedings of the 19th IEEE International Requirements Engineering Conference (RE'11). Trento, Italy. pp 353-354. 2011.

Sotirios Liaskos and John Mylopoulos. On Temporally Annotating Goal Models. In Proceedings of the 4th International i* Workshop (iStar'10). Hammamet, Tunisia. pp 62-66. 2010. (CEUR link)

Sotirios Liaskos, Sheila A. McIlraith, Shirin Sohrabi and John Mylopoulos. Integrating Preferences into Goal Models for Requirements Engineering. In Proceedings of the 18th IEEE International Requirements Engineering Conference (RE'10). Sydney, NSW, Australia. pp 135-144. 2010. (pdf)

Bradley Simmons, Hamoun Ghanbari, Sotirios Liaskos, Marin Litoiu and Gabriel Iszlai. Hierarchical Self-Optimization of SaaS Applications in Clouds. Software Engineering for Self-Adaptive Systems II. pp 354-375. 2010.

Sotirios Liaskos, Sheila A. McIlraith and John Mylopoulos. Towards Augmenting Requirements Models with Preferences. In Proceedings of the 24th IEEE/ACM International Conference on Automated Software Engineering (ASE'09). Auckland, New Zealand. pp 565-569. 2009.

Jordi Cabot, Steve M. Easterbrook, Jennifer Horkoff, Lysanne Lessard, Sotirios Liaskos and Jose-Norberto Mazn. Integrating sustainability in decision-making processes: A modelling strategy. In Proceedings of the 31st International Conference on Software Engineering (NIER Track) (ICSE-NIER'09). Vancouver, BC, Canada. pp 207-210. 2009.

Yijun Yu, Alexei Lapouchnian, Sotirios Liaskos, John Mylopoulos and Julio Cesar Sampaio do Prado Leite. From Goals to High-Variability Software Design. In Proceedings of the 17th International Symposium on Foundations of Intelligent Systems (ISMIS'08). Toronto, ON, Canada. pp 1-16. 2008.

Markus Strohmaier, Mathias Lux, Michael Granitzer, Peter Scheir, Sotirios Liaskos and Eric S. K. Yu. How Do Users Express Goals on the Web? - An Exploration of Intentional Structures in Web Search. In Proceedings of the WISE'07 International Workshop on Collaborative Knowledge Management for Web Information Systems (WEKnow). Lecture Notes in Computer Science (LNCS) 4832. Nancy, France. pp 67-78. 2008.

Mehrdad Sabetzadeh, Shiva Nejati, Sotirios Liaskos, Steve M. Easterbrook and Marsha Chechik. Consistency Checking of Conceptual Models via Model Merging. In Proceedings of the 15th IEEE International Requirements Engineering Conference (RE'07). New Delhi, India. pp 221-230. 2007.

Sotirios Liaskos, Lei Jiang, Alexei Lapouchnian, Yiqiao Wang, Yijun Yu, Julio Cesar Sampaio do Prado Leite and John Mylopoulos. Exploring the Dimensions of Variability: a Requirements Engineering Perspective. In Proceedings of the First International Workshop on Variability Modelling of Software-Intensive Systems (VaMoS 2007). Limerick, Ireland. pp 17-26. 2007.

Alexei Lapouchnian, Yijun Yu, Sotirios Liaskos and John Mylopoulos. Requirements-driven design of autonomic application software. In Proceedings of the 2006 conference of the Centre for Advanced Studies on Collaborative Research (CASCON'06). Toronto, ON, Canada. pp 80-94. 2006.

Sotirios Liaskos, Alexei Lapouchnian, Yijun Yu, Eric S. K. Yu and John Mylopoulos. On Goal-based Variability Acquisition and Analysis. In Proceedings of the 14th IEEE International Requirements Engineering Conference (RE'06). Minneapolis, MN, USA. pp 76-85. 2006. (pdf) (IEEE Explore)

Alexei Lapouchnian, Sotirios Liaskos, John Mylopoulos and Yijun Yu. Towards requirements-driven autonomic systems design. ACM SIGSOFT Software Engineering Notes, 30(4). pp 1-7. 2005.

Sotirios Liaskos, Alexei Lapouchnian, Yiqiao Wang, Yijun Yu and Steve M. Easterbrook. Configuring Common Personal Software: a Requirements-Driven Approach. In Proceedings of the 13th IEEE International Requirements Engineering Conference (RE'05). Paris, France. pp 9-18. 2005. (pdf) (IEEE Explore)

Yijun Yu, Yiqiao Wang, John Mylopoulos, Sotirios Liaskos, Alexei Lapouchnian and Julio Cesar Sampaio do Prado Leite. Reverse Engineering Goal Models from Legacy Code. In Proceedings of the 13th IEEE International Requirements Engineering Conference (RE'05). Paris, France. pp 363-372. 2005.

Bowen Hui, Sotirios Liaskos and John Mylopoulos. Requirements Analysis for Customizable Software Goals-Skills-Preferences Framework. In Proceedings of the 11th IEEE International Requirements Engineering Conference (RE'03). Monterey Bay, CA, USA. pp 117-126. 2003. (ps) (IEEE Explore)



 Teaching

- ITEC2010 - Systems Analysis and Design I
- ITEC4010 - Systems Analysis and Design II
- ITEC3230 - Designing User Interfaces
- ITEC4040 - Requirements Management
- ITEC6970 - Special Topics in IT: Systems Architecture


​​​​​