I recently received my PhD degree from the Department of Informatics and Telematics, Harokopio University of Athens, Greece, and I am am currently a Postdoctoral researcher at the same Department. My research interests are primarily focused on the Semantic Web, Automated Web Service Composition and AI Planning.

My PhD title is "Web Service Composition through AI Planning". My supervisor was Associate Professor Dimosthenis Anagnostopoulos, while other members of the supervising committee included Associate Professor Mara Nikolaidou, Assistant Professor Nick Bassiliades and Professor Ioannis Vlahavas.

My PhD research has included the development of the VLEPPO and PORSCE systems.

VLEPPO is a visual programming tool for designing planning domains and problems using visual elements and simple mouse operations, and then acquiring solutions (plans) for these problems through invoking planners implemented as web services. The tool can import from / export to PDDL (Planning Domain Definition Language), which is the standard for defining planning domains and problems. Although it can be used as a general purpose planning tool, it is mostly used in my research for semantic web service composition. The user simply defines the properties of the available web services and the desired goals of the complex service. Then VLEPPO automatically forms the description as a planning problem, solves it by invoking an appropriate planning system and visualizes the solution.

PORSCE II is the evolution of a prototype system that performs semantic web service composition by combining a domain-independent planning component and an ontology concept relevance module for semantic awareness and relaxation during plannig. PORSCE II is integrated with a visual component for visualization and manipulation of the complex services, as well as with a service replacement component which handles cases of web service failure. It also includes quality assessment of complex services according to various quality measures.

Other people that were involved in the development of these systems are Lecturer Dimitris Vrakas and Dr. George Meditskos.

I am also a member of Advanced Research on Modeling and Simulation Group of Pythagoras I Project co-founded by the European Union and the Greek Government.