Publications

Journal and conference papers

[2016]
Vosinakis, S., Anastassakis, G. and Koutsabasis, P., "Teaching and learning logic programming in virtual worlds using interactive microworld representations", British Journal of Educational Technology (BJET), 2016.
[2015]
Anastassakis, G. and Panayiotopoulos, T., "A Tool for Programming the Behaviour of Intelligent Virtual Agents in Prolog", in Proceedings of the 6th International Conference on Information, Intelligence, Systems and Applications (IISA 2015), 2015.
[2014]
Anastassakis, G. and Panayiotopoulos, T., "A Transparent and Decentralized Model of Perception and Action for Intelligent Virtual Agents", International Journal on Artificial Intelligence Tools, Vol. 23, N4, pp. 1460020, 2014.
Vosinakis, S., Koutsabasis, P. and Anastassakis, G., "A Platform for Teaching Logic Programming Using Virtual Worlds", in Advanced Learning Technologies (ICALT), 2014 IEEE 14th International Conference on, pp. 657-661, July, 2014.
[2013]
Anastassakis, G. and Panayiotopoulos, T., "Problem-based Virtual World Design for Virtual Reality Education - An Experiment with the Opensimulator Platform for Second Life-based Virtual Worlds", in CSEDU 2013 - Proceedings of the 5th International Conference on Computer Supported Education, pp. 513-516, SciTePress, 2013.
Avradinis, N., Panayiotopoulos, T. and Anastassakis, G., "Behavior believability in virtual worlds: agents acting when they need to", SpringerPlus, Vol. 2, N1, pp. 1-11, 2013.
Avradinis, N., Panayiotopoulos, T. and Anastassakis, G., "Modelling basic needs as agent motivations", International Journal of Computational Intelligence Studies, Vol. 2, N1, pp. 52-75, 2013.
[2012]
Anastassakis, G. and Panayiotopoulos, T., "A Unified Model for Representing Objects with Physical Properties, Semantics and Functionality in Virtual Environments", Intelligent Decision Technologies, Vol. 6, N2, pp. 123-137, 2012.
Anastassakis, G. and Panayiotopoulos, T., "An Architectural Pattern for X3D-Based Virtual Environments - An Object-Oriented Approach", in Proceedings of the 3rd International Conference on Computer Graphics Theory and Applications 2012 (GRAPP 2012), pp. 466-471, 2012.
Anastassakis, G., Panayiotopoulos, T. and Raptis, G., "Towards a Methodology for Integrating Physics Engines with Virtual Environments: A Case Study Using the REVE Platform and the Vesper3D Physics Engine", in Proceedings of the 16th Panhellenic Conference on Informatics (PCI 2012), pp. 86-92, 2012.
Anastassakis, G. and Panayiotopoulos, T., "A Transparent and Decentralized Model of Action for Intelligent Virtual Agents", in Proceedings of the 24th IEEE International Conference on Tools with Artificial Intelligence (ICTAI 2012), pp. 476 - 483, 2012.
Avradinis, N., Anastassakis, G. and Panayiotopoulos, T., "Motivated Agents in Virtual Worlds", in Frontiers in Artificial Intelligence and Applications, Virvou, M. and Matsuura, S. (Eds.), Vol. 240, pp. 276-285, IOS Press, 2012.
Panayiotopoulos, T., Papaggeli, H., Avradinis, N. and Anastassakis, G., "Emotion-driven behaviour in REVE intelligent virtual agents", in Proceedings of the 4th Conference on Informatics in Education (CIE 2012), 2012.
[2011]
Anastassakis, G. and Panayiotopoulos, T., "Intelligent Virtual Environment Development with the REVE Platform: An Overview", in Intelligent Virtual Agents, Vilhjálmsson, H.H., Kopp, S., Marsella, S. and Thórisson, K.R. (Eds.), Lecture Notes in Computer Science, Vol. 6895, pp. 431-432, Springer, 2011.
Anastassakis, G. and Panayiotopoulos, T., "Intelligent Virtual Environment Development with the REVE Platform as an Educational Aid", in Proceedings of the 3rd Conference on Informatics in Education (CIE 2011), Piraeus, Greece, October 7-9, 2011.
[2008]
Arnellos, A., Vosinakis, S., Anastassakis, G. and Darzentas, J., "Autonomy in Virtual Agents: Integrating Perception and Action on Functionally Grounded Representations", in Artificial Intelligence: Theories, Models and Applications, Darzentas, J., Vouros, G.A., Vosinakis, S. and Arnellos, A. (Eds.), Lecture Notes in Computer Science (LNCS), Vol. 5138, pp. 51-63, Springer-Verlag, 2008.
[2007]
Vosinakis, S., Anastassakis, G. and Panayiotopoulos, T., "Modeling Spatiotemporal Uncertainty in Dynamic Virtual Environments", in Intelligent Virtual Agents, Pelachaud, C., Martin, J.C., André, E., Chollet, G., Karpouzis, K. and Pelé, D. (Eds.), Lecture Notes in Computer Science (LNCS), Vol. 4722, pp. 409-410, Springer-Verlag, 2007.
[2006]
Anastassakis, G. and Panayiotopoulos, T., "A Framework for Uniform Development of Intelligent Virtual Environments", in Advances in Artificial Intelligence, Antoniou, G., Potamias, G., Spyropoulos, C. and Plexousakis, D. (Eds.), Lecture Notes in Artificial Intelligence, Vol. 3955, N1, pp. 13-24, Springer-Verlag, 2006.
[2004]
Anastassakis, G. and Panayiotopoulos, T., "A System for Logic-Based Intelligent Virtual Agents", International Journal of Artificial Intelligence Tools, Vol. 13, N3, pp. 593-621, September, 2004.
Anastassakis, G. and Panayiotopoulos, T., "Towards a General-Purpose Intelligent-Agent-Oriented Programming Language", in Proceedings of the 3rd Hellenic Conference on Artificial Intelligence, May, 2004.
[2001]
Anastassakis, G., Ritchings, T. and Panayiotopoulos, T., "Multi-agent Systems as Intelligent Virtual Environments", in KI2001: Advances in Artificial Intelligence, Baader, F., Brewka, G. and Eiter, T. (Eds.), Lecture Notes in Computer Science (LNCS), Vol. 2174, pp. 381-395, Springer-Verlag, 2001.
Anastassakis, G., Panayiotopoulos, T. and Ritchings, T., "Virtual Agent Societies with the mVITAL Intelligent Agent System", in Intelligent Virtual Agents, de Antonio, A., Aylett, R. and Ballin, D. (Eds.), Lecture Notes in Computer Science (LNCS), Vol. 2190, pp. 112-125, Springer-Verlag, 2001.
[1999]
Panayiotopoulos, T. and Anastassakis, G., "Towards a Virtual Reality Intelligent Agent Language", in Advances in Informatics, Fotiadis, D. and Nikolopoulos, S. (Eds.), pp. 249-259, World Scientific Publishing, 1999.
Vosinakis, S., Anastassakis, G. and Panayiotopoulos, T., "DIVA: Distributed Intelligent Virtual Agents", in Proceedings of the 2nd Workshop on Intelligent Virtual Agents, Ballin, D. (Eds.), pp. 131-134, University of Salford, 1999.

Theses and dissertations

[2010]
Anastassakis, G., "Representation and Operation of Virtual Environments", PhD Thesis, University of Piraeus, Greece, 2010.
[2000]
Anastassakis, G., "Intelligent Agents in Virtual Worlds", Master's Thesis, University of Manchester Institute of Science and Technology (UMIST), UK, 2000.