I do research in the tribler.org team at Delft University of Technology in the Parallel and Distributed Systems Group. My background is Computer Science and Artificial Intelligence but I have spent a lot of time with Sociologists, Philosophers and even lapsed Economists doing simulations. Why do I mention this? I suppose I am trying to indicate that I don't approach Computers in a "traditional way" so I'm not occupied with traditional problems and techniques.

Complex networked "always on" information systems are increasingly displaying properties comparable to biological and social entities. Crude mechanical analogies and patterns in software design are holding back progress - we are not building "engines" anymore. A more suitable approach is to consider such systems as "societies" and program them with ideas derived from social theory - particularly new ideas coming from Computational Sociology, Evolutionary Economics and the like.

New Scientist	Agent Link	p2pNet	ATLAS (Turkish)	Slashdot

Emergent Networks as Distributed Reputation System

Brief History

Other Activities

I am currently a member of the editorial board of the Journal of Artificial Societies and Social Simulation (JASSS). I was involved in the formation of the new European Social Simulation Association (ESSA) and am currently an elected member of the management committee. I have been, and am, a member of the programme or organising committees for numerous agent-based simulation and self-organising applications related workshops and conferences (recent ones include: ESSA04, MAMABS04, ESOA04, ABS04, M2M04, SIC05, ESOA05, ESSA05, MASTA05, SOAS05, ECE05, ESOA06, WCSS06, MABS06, EUC06, SBIA06, CSS-TW1, ECCS06, P2P06, EPOS06, M2M07, P2P07, SASO07, ESSA07, MABS07, ICPP07, MASTA07, MA4CS07, EEMMAS07, P2P-NVE07, EUMAS2007, SOPDS2008, WCSS2008, ESSA2008, AAMAS2008, MABS2008, SASO2008).

For contact details see the bottom of this page.

Journal Articles

• Rahman, R., Hales, D., Meulpolder, M., Clements, M., Heinink, V., Pouwelse, V., Sips, H. (submitted) Robust vote sampling in a P2P media distribution system. IEEE Transactions on multimedia systems.
  
• Hales, D., Arteconi, S., Marcozzi, A., Chao, I. (submitted) Towards a group selection design pattern. P2P Networks and Applications.
  
• Marcozzi, A., Hales, D. (in press) Emergent Social Rationality in a Peer-to-Peer System. Advances in Complex Systems (ACS). World Scientific. PDF.
  
• Hales, D.; Arteconi, S. (2008) Motifs in Evolving Cooperative Networks Look Like Protein Structure Networks. Networks and Heterogeneous Media (NHM), Vol. 3, No. 2, American Institute of Mathematical Sciences. PDF.
  
• Rossi, G., Arteconi, S., Hales, D. (in press) Evolving Networks for Social Optima in the “Weakest Link Game”. Computational and Mathematical Organization Theory (CMOT), Springer. Expected early 2008. PDF.
  
• Edmonds, B., Norling, E., Hales, D. (in press) Towards the Evolution of Social Structure. Computational and Mathematical Organization Theory (CMOT), Springer. Expected early 2008. PDF.
  
• Hales, D. (2006) Emergent Group-Level Selection in a Peer-to-Peer Network.  Complexus 2006;3:108-118 (DOI:10.1159/000094193). Available as PDF.
  
• Mollona, E. & Hales, D. (2006) Economia della conoscenza, Governo delle Risorse Umane e Confini dell'Impresa. Strategie organizzative emergenti in una simulazione ad agenti. Sistemi Intelligenti, a. XVIII, no. 2, agosto 2006. PDF.
  
• Hales, D. & Arteconi, S. (2006) SLACER: A Self-Organizing Protocol for Coordination in P2P Networks. IEEE Intelligent Systems, 21(2):29-35, March / April 2006. Available as PDF (150k).
  
• Mollona, E. & Hales, D. (2006) Knowledge-Based Jobs and the Boundaries of Firms - Agent-based simulation of Firms Learning and Workforce Skill Set Dynamics. Journal of Computational Economics 27(1):35-62. Available as PDF (2.8mb).
• Hales, D. & Edmonds, B. (2005) Applying a socially-inspired technique (tags) to improve cooperation in P2P Networks. IEEE Transactions in Systems, Man and Cybernetics - Part A: Systems and Humans, 35(3):385-395. Available as
PDF (448k).
• Edmonds, B & Hales, D. (2005) Computational Simulation as Theoretical Experiment. Journal of Mathematical Sociology 29(3):209-232 (see Discussion Paper CPM-02-106).
• Edmonds, B. & Hales, D. (2004) When and Why Does Haggling Occur - Some suggestions from a qualitative but computational simulation of negotiation. Journal of Artificial Societies and Social Simulation vol. 7, no. 2. Available at: http://jasss.soc.surrey.ac.uk/7/2/9.html
• Edmonds, B. & Hales, D. (2003) Replication, Replication and Replication - Some Hard Lessons from Model Alignment. Special Issue on Model-2-Model Comparison, Journal of Artificial Societies and Social Simulation vol. 6, no. 4. Available at: http://jasss.soc.surrey.ac.uk/6/4/11.html
• Hales, D. (2002) Group Reputation Supports Beneficent Norms. The Journal of Artificial Societies and Social Simulation (JASSS) vol. 5, no. 4. http://www.soc.surrey.ac.uk/JASSS/5/4/4.html
• Hales, D. (1998) An Open Mind is Not an Empty Mind - Experiments in the Meta-Noosphere. The Journal of Artificial Societies and Social Simulation (JASSS) vol. 1, no. 4. Available at: http://www.soc.surrey.ac.uk/JASSS/1/4/2.html

Journal Features / Reviews / Commentary

• Hales, D. and Babaoglu, O. (2006) Towards Automatic Social Bootstrapping of Peer-to-Peer Protocols. In ACM SIGOPS Operating Systems Review (Special Issue on Self-Organizing Systems), vol. 40, no. 3, July 2006. Available as PDF.
  
• Hales, D. & Patarin, S. (2005) Feature: Computational Sociology for Systems "In the Wild": The Case of BitTorrent. IEEE Distributed Systems Online, vol. 6, no. 7, 2005. Available as PDF.
  
• Hales, D., Rouchier, J. and Edmonds, B. (2003) Editorial Introduction: Model-to-Model Analysis. Special Issue on Model-2-Model Comparison, Journal of Artificial Societies and Social Simulation vol. 6, no. 4. Available at:. http://jasss.soc.surrey.ac.uk/6/4/5.html
• Hales, D. (2002) Book Review: Evolution's Arrow: The Directions of Evolution and the Future of Humanity by John Stewart. The Journal of Artificial Societies and Social Simulation (JASSS) vol. 5, no. 1. http://www.soc.surrey.ac.uk/JASSS/5/1/reviews/hales.html
• Hales, D. & Marsden, P. (2002) Editorial: Memetics Malaise? The Journal of Memetics - Evolutionary Models of Information Transmission (JoM-EMIT) vol. 6, no. 2. Available at: http://jom-emit.cfpm.org/2002/vol6/editorial.html
• Hales, D. (2001) Book Review: "Introduction to Artificial Life by Christoph Adami". The Journal of Artificial Societies and Social Simulation (JASSS) vol. 4, no. 1. Available at: http://www.soc.surrey.ac.uk/JASSS/4/1/reviews/hales.html
• Hales, D. (1999) Commentary: Belief Has Utility - An Intentional Stance. The Journal of Memetics - Evolutionary Models of Information Transmission (JoM-EMIT) vol. 3, no. 1. Available at: http://www.cpm.mmu.ac.uk/jom-emit/1999/vol3/hales_d.html
• Hales, D. (1998) Report: Panel Discussion from the 1st Symposium on Memetics. The Journal of Memetics - Evolutionary Models of Information Transmission (JoM-EMIT) vol. 2, no. 3. Available at: http://www.cpm.mmu.ac.uk/jom-emit/1998/vol2/panel_discussion.html

Edited Volumes and Special Issues

• Hales, D., Edmonds, B., Spirakis, P., Babaoglu, O. (eds) (in press) Cooperation in Selfish Systems. Special issue of the the Journal of Computational and Mathematical Organization Theory (CMOT). Spinger. Expected early 2008.
  
• A. Brueckner, S., Di Marzo, G., Serugendo, Hales, D., Zambonelli, F. (eds.) (2006) Engineering Self-Organising Systems. Proceedings of the 3rd Workshop on Engineering Self-Organising Applications (EOSA'05). Lecture Notes in Artificial Intellignece, 3910. Springer.
• Edmonds, B., Gilbert, N., Gustafson, S., Hales, D. and Krasnogor, N. (eds.) (2005) Socially Inspired Computing. Proceedings of the Joint Symposium on Socially Inspired Computing, University of Hertfordshire, Hatfield, UK 12 - 15 April 2005, Published by AISB. Availible as PDF (7mb).
• Hales, D., Edmonds, B., Norling, E. and Rouchier, J. (eds.) (2003) Multi-Agent Based Simulation III, Proceedings of the 4th International Workshop, MABS 2003, Melbourne, Australia, July 2003. Lecture Notes in Artificial Intellignece, 2927. Springer.
• Hales, D., Rouchier, J. and Edmonds, B. (eds.) (2003) Special Issue on Model-2-Model Comparison. Journal of Artificial Societies and Social Simulation 6(4).

Conferences and Book Chapters

• Hales, D., Arteconi, S., Marcozzi, A., Chao, I. (2008) Towards a group selection design pattern. In Meyer, F, (ed), The European Integrated Project "Dynamically Evolving, Large Scale Information Systems (DELIS)", Proceedings of the final workshop, Barceonla, February 27-28, 2008. Heinz Nixdirf Insitute, University of Paderborn, Band 222. PDF.
  
• Hales, D.; Arteconi, S. (2007) Motifs in Evolving Cooperative Networks Look Like Protein Structure Networks. Proceedings of the European Conference on Complex Systems 2007, Dresden. PDF.
  
• Marcozzi, A., Hales, D. (2007) Emergent Social Rationality in a Peer-to-Peer System. Proceedings of the European Conference on Complex Systems 2007, Dresden. PDF.
  
• Hales, D. (in press) Distributed Computer Systems. In Edmonds, B., Moss, S. (eds) Simulating Social Complexity: in memory of Herbert Simon, Springer. PDF.
  
• Hales, D. (2007) Understanding Tag Systems by Comparing Tag Models. In Edmonds, B., Iglesias, C., H., and Troitzsch, K. G, (eds) Social Simulation: Technologies, Advances and New Discoveries, Idea Group. PDF.
  
• Hales, D. (2007) Applying Evolutionary Approaches for Cooperation. In F.H.P. Fitzek and M. Katz. (eds) Cognitive Wireless Networks: Concepts, Methodologies and Visions. Springer. PDF.
  
• Hales, D.; Marcozzi, A.; Cortese, G. (2007) Towards Cooperative, Self-Organised Replica Management. Proceedings of the First International Conference on Self-Adaptive and Self-Organizining Systems (SASO2007), July 2007, Boston, MIT. IEEE Press. PDF.
  
• Jesi, G., Hales, D., van Steen, M. (2007) Identifying Malicious Peers Before It’s Too Late: A Decentralized Secure Peer Sampling Service. Proceedings of the First International Conference on Self-Adaptive and Self-Organizining Systems (SASO2007), July 2007, Boston, MIT. IEEE Press. PDF.
  
• Arteconi, S.; Hales, D.; Babaoglu, O. (2007) Greedy Cheating Liars and the Fools Who Believe Them. In Engineering Self-Organising Systems, Proceedings of the 4th International Workshop, ESOA 2006, Hakodate, Japan, May 9, 2006, Revised and Invited Papers. Brueckner, S.; Hassas, S.; Jelasity, M.; Yamins, D. (Eds.),  Lecture Notes in Computer Science , Vol. 4335, Springer.
  
• Hales, D. & Patarin, S. (2006) How to cheat BitTorrent and Why Nobody Does. Proceedings of the European Conference on Complex Systems (ECCS2006), Oxford. PDF.
  
• Hales, D., Arteconi, S. (2006) Friends for Free: Self-Organizing Artificial Social Networks for Trust and Cooperation. In Algorithmic Aspects of Large and Complex Networks, Stefano Leonardi and Friedhelm Meyer auf der Heide and Dorothea Wagner (eds.), Dagstuhl Seminar Proceedings no. 05361, Internationales Begegnungs- und Forschungszentrum (IBFI), Schloss Dagstuhl, Germany. link to online paper
• Hales, D.; Arteconi, S.; Babaoglu, O. (2005) SLACER: randomness to cooperation in peer-to-peer networks. Proceedings of the Workshop on Stochasticity in Distributed Systems (STODIS'05) including in the Proceedings of IEEE CollaborateCom Conference, Dec. 19, 2005. San Jose, CA. Availible as PDF (128k).
  
• Marcozzi, A.; Hales, D.; Jesi, G.; Arteconi, S.; Babaoglu, O. (2005) Tag-Based Cooperation in Peer-to-Peer Networks with Newscast. In Self-Organization and Autonomic Informatics (I), Volume 135 Frontiers in Artificial Intelligence and Applications, Edited by: H. Czap, R. Unland, C. Branki and H. Tianfield, IOS Press, Netherlands. See Technical Report UBLCS-2005-15.
  
• Gerhard Weikum, Peter Triantafillou, David Hales, Christian Schindelhauer  (in press) Towards Self-Organizing Query Routing and Processing for Peer-to-Peer WebSearch. Proceedings of the European Conference on Complex Systems (ECCS'05), Nov. 14th, Paris, France. Publishers: i6doc, Belgium.
  
• Hales, D. (in press) Altruism “For Free” using Tags. Proceedings of the European Conference on Complex Systems (ECCS'05), Nov. 14th, Paris, France. Publishers: i6doc, Belgium. Availible as PDF (124kb).
  
• Hales, D. (in press) Emergent Group-Level Selection in a Peer-to-Peer Network. Proceedings of the European Conference on Complex Systems (ECCS'05), Nov. 14th, Paris, France. Publishers: i6doc, Belgium. Available as PDF (468kb).
  
• Mollona, E. & Hales, D. (in press) Modeling Firm Skill-Set Dynamics as a Complex System. Proceedings of the European Conference on Complex Systems (ECCS'05), Nov. 14th, Paris, France. Publishers: i6doc, Belgium. Available as PDF (664kb).
  
• Hales, D. (2005) Choose Your Tribe! - Evolution at the Next Level in a Peer-to-Peer Network. Presented at the 3rd Workshop on Engineering Self-Organising Applications (EOSA 2005) located with the AAMAS 2005 conference, July 26th, 2005, Utrect, Netherlands. See Technical Report UBLCS-2005-13.
  
• Hales, D. (2005) Engineering with Sociological Metaphors: Examples and Prospects. Presented at the AISB2005 Symposium - Engineering with Social Metaphors, University of Hertfordshire, UK, April 14th. Available as PDF (400k).
• Hales, D. (2005) Finding Cooperative (tag-based) Stereotypes with Semi-Automated Searching. Presented at the AISB2005 Symposium - Emerging Artificial Societies, University of Hertfordshire, UK, April 13th. Available as PDF (448k) or MS-Word (320k).
  
• Hales, D. (in press) Understanding Tag Systems by Comparing Tag Models. Presented at the Second Model-to-Model Workshop (M2M2) co-located with the 2nd European Social Simulation Association Conference (ESSA'04), Valladolid, Spain 16-19th of Sept 2004. Available as PS (1.5mb) or PDF (768k) or MS-Word (1.3mb).
• Hales, D. (2005) Self-Organising, Open and Cooperative P2P Societies – From Tags to Networks. Proceedings of the 2nd Workshop on Engineering Self-Organsing Applications (ESOA 2004 located with the AAMAS 2004 conference), LNCS 3464, pp.123-137. Springer. Available as PS (2.6MB) or PDF (258k) or MS-Word (113k).
• Hales, D. (2005) Change Your Tags Fast! - a necessary condition for cooperation? Proceedings of the Workshop on Multi-Agents and Multi-Agent-Based Simulation (MABS 2004), LNAI 3415, Springer, 2005. Available as PS (500k) or PDF (163k) or MS-Word (69k). Final version PDF (129k).
  
• Hales, D. (2005) Sociologically Inspired Approaches for Self-*: Examples and Prospects. In Ozalp Babaoglu, Mark Jelasity, Alberto Montresor, Christof Fetzer, Stefano Leonardi, Aad van Moorsel, Maarten van Steen (eds) Self-Star Properties in Complex Information Systems. Lecture Notes in Computer Science, Hot Topics, 3460, Springer-Verlag, Berlin. Available as: PDF (456k).
• Hales, D. (accepted) Tags for All! - Understanding and Engineering Tag Systems. Accepted for presentation at  the 4th International Conference on Complex Systems (ICCS 2004) which took place in Boston on 16-21st of May 2004. This paper was not presented and therefore is not published in the proeedings but will be submitted to the associated Journal in due course.
  
• Hales, D. (2004) From Selfish Nodes to Cooperative Networks – Emergent Link-based Incentives in Peer-to-Peer Networks. In proceedings of The Fourth IEEE International Conference on Peer-to-Peer Computing (p2p2004), 25-27 August 2004, Zurich, Switzerland. IEEE Computer Society Press. Available as PS (526k) or PDF (290k) or MS-Word (170k).
• Hales, D. & Edmonds, B. (2004) Can Tags Build Working Systems? From MABS to ESOA. In Di Marzo Serugendo, G.; Karageorgos, A.; Rana, O.F.; Zambonelli (eds.) Engineering Self-Organising Systems - Nature-Inspired Approaches to Software Engineering. Lecture Notes in Artificial Intelligence 2977, Springer, Berlin. Presented at the ESOA 2003 workshop. (see Discussion Paper CPM-02-117).
• Hales, D. (2004) The Evolution of Specialization in Groups. In Lindemann, G., Moldt, D. and Paolucci, M., (Eds.) Regulated Agent-Based Social Systems - 1st Intnerational Workshop, RASTA 2002 Bologna, Italy, July 2002. Revised Selected and Invited Papers. Lecture Notes in Artificial Intelligence 2934. Berlin: Springer-Verlag. Available as: Postscript (0.3MB) or MS-Word (95K)
  
• Hales, D. (2004) Memetic Engineering and Culture Evolution. In Knowledge Management, Organizational Intelligence and Learning, and Complexity, (Ed. L. Douglas Kiel), in Encyclopedia of Life Support Systems (EOLSS), Developed under the Auspices of the UNESCO, Eolss Publishers, Oxford , UK. See: http://www.eolss.net. Available as: PDF (200kb).
• Hales, D. & Edmonds, B. (2003) Evolving Social Rationality for MAS using "Tags", In.Rosenchein, J.S., et al (ed.) Proceedings of the 2nd International Conference on Autonomous Agents and Multiagent Systems, Melbourne, July 2003 (AAMAS 2003), ACM Press, 497-503. (see Discussion Paper CPM-02-104).
• Hales, D. (2002) Evolving Specialisation, Altruism and Group-Level Optimisation Using Tags. In Sichman, J. S., Bousquet, F. Davidsson, P. (Eds.) Multi-Agent-Based Simulation II. Lecture Notes in Artificial Intelligence 2581. Berlin: Springer-Verlag.  Available as: Postscript (0.5MB) or MS-Word (89K)
  
• Hales, D. & Douce, C. (2002) Modelling Software Organisations. In Kuljis, J., Baldwin, L., Scoble, R. (Eds.) Proceedings of the 14th Annual Workshop of the Psychology of Programming Interest Group, Brunel University, London, UK. Available as: CPM-02-93.
• Hales, D. (2000) Cooperation without Space or Memory: Tags, Groups and the Prisoner's Dilemma. In Moss, S., Davidsson, P. (Eds.) Multi-Agent-Based Simulation. Lecture Notes in Artificial Intelligence 1979. Berlin: Springer-Verlag. Available as: Postscript (0.4MB) or MS-Word (80K)
• Hales, D. (1998) Artificial Societies, Theory Building and Memetics. Presented at the Memetics Symposium. Proceedings of the 15th International Conference on Cybernetics, International Association for Cybernetics (IAC), Namur: Belgium. Available as: Postscript (0.3MB) or MS-Word (65K)
• Hales, D. (1998) Stereotyping, Groups and Cultural Evolution. In Sichman, J., Conte, R., & Gilbert, N. (Eds.) Multi-Agent Systems and Agent-Based Simulation. Lecture Notes in Artificial Intelligence 1534. Berlin: Springer-Verlag. Available as: Postscript (0.7MB) or MS-Word (82K)
• Hales, D. (1998) Selfish Memes and Selfless Agents - Altruism in the SwapShop. In Proceedings of the 3rd International Conference on Multi-Agent Systems (ICMAS'98). California: IEEE Computer Society. Available as: Postscript (0.7MB) or MS-Word (113K)
• Hales, D. (1997) Modelling Meta-Memes. In R. Conte, R. Hegselmann & P. Terna (Eds.) Simulating Social Phenomena. Berlin: Springer-Verlag. Available as: Postscript (1.3MB) or MS-Word (650K)

Technical Reports and Discussion Papers

• Rahman, R., Hales, D., Meulpolder, M., Clements, M., Heinink, V., Pouwelse, V., Sips, H. (2008) Robust vote sampling in a P2P media distribution system. Technical Report PDS-2008-004, Technical University of Delft, May 2008.
  
• Many authors (2007) DELIS Report D4.3.4: Evolutionary approaches to coalition formation in dynamic nets. d4.3.4.pdf.
  
• Many authors (2007) DELIS Report D5.2.5: Degeneracy and redundancy in self-organised systems. d5.2.5.pdf.
  
• Many authors (2007) DELIS Report D5.3.2: Applications of bio- and socio-inspired algorithms in information systems. d5.3.2.pdf.
  
• Many authors (2007) DELIS Report D5.3.3: Bio- and socio-inspired approaches in information systems - lessons learned. d5.3.3.pdf.
  
• Many authors (2007) DELIS Report D5.4.3: Form and function in evolving information systems. d5.4.3.pdf
  
• Hales, D.; Arteconi, S.; Marcozzi, A.; Chao, I. (2006) Towards a Group Selection Design Pattern. November 2007, Technical Report UBLCS-2007-25, University of Bologna, Dept. of Computer Science.
  
• Hales, D. (2007) Rationaliy and Power: the "gap in the middle" in ICT. Position paper presented at FET COSI-ICT workshop, Dresden, Oct. 6th. PDF.
  
• Hales, D.; Marcozzi, A.; Cortese, G. (2007) Towards Cooperative, Self-Organised Replica Management. January 2007, Technical Report UBLCS-2007-02, University of Bologna, Dept. of Computer Science.
• Many authors (2006) DELIS Report D4.3.3: Evolutionary and socially inspired algorithms, tools and applications in dynamic nets. D4.3.3.pdf.
  
• Many authors (2006) DELIS Report D5.2.4: Modeling open source development as evolving networks. D5.2.4.pdf.
  
• Many authors (2006) DELIS Report D5.3.1: From biological and social algorithms to engineering solutions. D5.3.1.pdf.
  
• Many authors (2006) DELIS Report D5.4.2: Understanding and engineering multi-scale selection in evolving dynamic networks. D5.4.2.pdf
  
• Many authors (2006) DELIS Report D5.5.1: Identifying and promoting industrial applications and knowledge transfer. D5.5.1.pdf.
  
• Many authors (2006) DELIS Report D5.6.2: Development of an integrated package for network evolutionary dynamics. D5.6.2.pdf
  
• Hales, D.; Arteconi, S. (2006) Motifs in Evolving Cooperative Networks Look Like Protein Structure Networks. December 2006, Technical Report UBLCS-2006-29, University of Bologna, Dept. of Computer Science.
  
• Marcozzi, A.; Hales, D. (2006) Emergent Social Rationality in a Peer-to-Peer System. October 2006, Technical Report UBLCS-2006-23, University of Bologna, Dept. of Computer Science.
  
• Arteconi, S., Hales, D. (2006) Broadcasting at the Critcial Threshold. October 2006, Technical Report UBLCS-2006-22, University of Bologna, Dept. of Computer Science.
• Rossi, G., Arteconi, S., Hales, D. (2006) Evolving Networks for Social Optima in the "Weakest Link Game". July 2006, Technical Report UBLCS-2006-21, University of Bologna, Dept. of Computer Science.
• Hales, D. & Babaoglu, O. (2006) Automatic Social Boostrapping. June. 2006, Technical Report UBLCS-2006-19, University of Bologna, Dept. of Computer Science.
• Many authors (2005) DELIS Report D5.1.1: Desirable lifelike properties in large-scale information systems. D5.1.1.pdf.
• Many authors (2005) DELIS Report D5.2.2: Optimal strategies for the collective construction of efficient information-processing webs. D5.2.2.pdf.
• Many authors (2005) DELIS Report D5.2.3: Degeneracy for redundancy in human-constructed information systems. D5.2.3.pdf.
• Many authors (2005) DELIS Report D5.4.1: Application of "motif analysis'' to artificial evolving networks. D5.4.1.pdf.
• Many authors (2005) DELIS Report D4.3.2: Initial Tools for Network Evolution, Characterisation and Design. D4.3.2.pdf.
  
• Many authors (2005) DELIS Report D5.6.1: Classification of families of information networks based on their topological and functional structures and their relation with the underlying fitness landscape. D5.6.1.pdf.
• Arteconi, S. & Halers, D. (2005) Greedy Cheating Liars and the Fools Who Believe Them. Dec. 2005, Technical Report UBLCS-2005-21.
  
• Hales, D. & Arteconi, S. (2005) Friends for Free:Self-Organizing Artificial Social Networks for Trust and Cooperation. Sept 2005, http://arxiv.org/abs/cs.MA/0509037
  
• Marcozzi, A.; Hales, D.; Jesi, G.; Arteconi, S.; Babaoglu, O. (2005) Tag-Based Cooperation in Peer-to-Peer Networks with Newscast. University of Bologna, Dept. of Computer Science, May 2005, Technical Report UBLCS-2005-15.
  
• Hales, D. (2005) Choose Your Tribe! - Evolution at the Next Level in a Peer-to-Peer Network. University of Bologna, Dept. of Computer Science, May 2005, Technical Report UBLCS-2005-13.
  
• Hales, D. & Patarin, S. (2005) How to cheat BitTorrent and why nobody does. University of Bologna, Dept. of Computer Science, May 2005, Technical Report UBLCS-2005-12.
  
• Mollona, E. & Hales, D. (2004) Knowledge-Based Jobs and the Boundaries of Firms - Agent-based simulation of Firms Learning and Workforce Skill Set Dynamics. Presetned at the Wild@Ace workshop, Dec 3-4, Torino, Italy. Available as: pre-proceedings: PDF (124k), post-proceedings: PDF (132k) Technical Report UBLCS-2005-14.
• Many authors (2004) DELIS Project Report D5.2.1: Algorithmus to Identify Locally Efficient Sub-graphs in Information Transfer Networks. D5.2.1.pdf.
• Many authors (2004) DELIS Project Report D4.3.1: An evaluation of the currently known "evolutionary game theory" approaches. D4.3.1.pdf.
• Hales, D. & Edmonds, B. (2004) Sociologically Inspired Engineering.  In AgentLink News issue 15. Available at: http://www.agentlink.org/newsletter/15/AL-15.pdf and The Centre for Policy Modelling, Manchester Metropolitan University, UK. Discussion Paper CPM-02-136.
• Hales, D. & Edmonds, B. (2004) Fashioning social simulations into engineering tools – the case of cooperation on P2P networks. The University of Bologna, Italy & The Centre for Policy Modelling, Manchester Metropolitan University, UK. Discussion Paper CPM-02-134.
• Rouchier, J. & Hales, D. (2003) How To Be Loyal, Rich And Have Fun Too - The Fun Is Yet To Come. Presented at the 1st ESSA Conference in Gronigan on the 21st of Sept. 2003. Available in the online proceedings and as Discussion Paper CPM-03-122.
• Edmonds, B. & Hales, D. (2003) When and why does haggling occur? - some lessons from a qualitative but computational simulation of negotiation. Presented at the 1st ESSA Conference in Groningha on the 21st of Sept. 2003. Available in the online proceedings.
• Hales, D.(2002) Neg-o-Net - a negotiation simulation test-bed. The Centre for Policy Modelling, Manchester Metropolitan University, UK. Discussion Paper CPM-02-109.
• Edmonds, B. & Hales, D. (2003) Computational Simulation as Theoretical Experiment. The Centre for Policy Modelling, Manchester Metropolitan University, UK. Discussion Paper CPM-02-106.
• Hales, D. & Edmonds, B. (2002) Evolving Social Rationality for MAS using "Tags". The Centre for Policy Modelling, Manchester Metropolitan University, UK. Discussion Paper CPM-02-104.
• Hales, D.(2002) Group Reputation Supports Beneficent Norms. The Centre for Policy Modelling, Manchester Metropolitan University, UK. Discussion Paper CPM-02-101.
• Hales, D.(2002) Understanding Our Creations: Using Machine Learning to Understand Machine Models The Centre for Policy Modelling, Manchester Metropolitan University, UK. Discussion Paper CPM-02-96.
• Hales, D. & Douce, C. (2002) Modelling Software Organisations. The Centre for Policy Modelling, Manchester Metropolitan University, UK. Discussion Paper CPM-02-93.
• Hales, D. (2002) Wise-Up! - Smart Tag Pairing Evolves and Persists The Centre for Policy Modelling, Manchester Metropolitan University, UK. Discussion Paper CPM-02-90.
• Hales, D. (2002) Smart Agents Don't Need Kin - Evolving Specialisation and Cooperation with Tags. The Centre for Policy Modelling, Manchester Metropolitan University, UK. Discussion Paper CPM-02-89.
• Hales, D. (2002) Cooperation and Specialisation without Kin Selection. The Centre for Policy Modelling, Manchester Metropolitan University, UK. Discussion Paper CPM-02-88.
• Davidson, P., Moss, S., Hales, D., Gotts, N., Wijngaards, N. (2001) The Agent Based Social Simulation (ABSS) SIG Report AgentLink News issue 8. Available at: http://www.agentlink.org/newsletter/8/AL-8.pdf
• Hales, D. & Scott, P.D. (2001) How Many Binary Concepts are Learnable and Why? Dept. Computer Science, University of Essex, Technical Report No.347.
• Scott, P.D. & Hales, D. (2001) Characterising Data Set Difficulty: An Investigation using Artificial Data Sets. Dept. Computer Science, University of Essex, Technical Report No.348.
• Scott, P.D. & Hales, D. (2001) The effect of training set size on the performance of classification learning procedures. Dept. Computer Science, University of Essex, Technical Report.
  
• Hales, D. (2001) Tag Based Co-operation in Artificial Societies.  Ph.D. Thesis, Department of Computer Science, University of Essex.
• Hales, D. (1998) Artificial Society Methodology & Cultural Evolution. Unpublished 2nd year report. June 1998, Department of Computer Science, University of Essex.
• Hales, D. (1997) Memetic Evolution & Suboptimisation. Unpublished 1st year report. September 1997, Department of Computer Science, University of Essex.
• Hales, D. (1995) Modelling Meta-Memes. MSc dissertation. Department of Computer Science, University of Essex.

Posters

• Hales, D.; Marcozzi, A.; Cortese, G. (2007) Towards Cooperative, Self-Organised Replica Management. Poster presented at the European Conference on Complex Systems (ECCS'07), Oct. 2007, Dresden, Germany. PDF.
  
• Marcozzi, A. & Hales, D. (2006) Emergent Socially Rational Utilitarianism in a Peer-to-Peer System. Poster presented at the European Conference on Complex Systems (ECCS'06), Sept 2006, Oxford, UK. PDF.
  
• Arteconi, S. & Hales, D. (2006) Greedy Cheating Liars and the Fools Who Believe Them. Poster presented at the European Conference on Complex Systems (ECCS'06), Sept 2006, Oxford, UK. PDF.
  
• Patarin, S. & Hales, D. (2005) Why Does BitTorrent Work So Well? Poster presented at the European Conference on Complex Systems (ECCS'05), Nov. 14-18th, Paris, France. Available as: PDF (1.4mb) or Adobe Illustrator (1.6mb) also see extended abstract PDF (8kb).
• Hales, D. (2004) Selfish Rewiring for Cooperation - Emergent link-based incentives in a peer-to-peer simulation. Poster presented at the European Conference on Complex Systems (ECCS'04), Dec 5-7th, Torino, Italy. Available as: PDF (1.6MB) or Adobe Illustrator (1.7MB)
• Mollona, E. & Hales, D. (2004) Learning without Earning - Knowledge-Based Jobs and Long-Term Firms' Strategy. Poster presented at the European Conference on Complex Systems (ECCS'04), Dec 5-7th, Torino, Italy. Available as: PDF (1.0MB) or Adobe Illustrator (1.1MB)

Talks

• Hales, D. (2008) Economics of P2P file-sharing systems. Tribler course on advanced P2P technology. May 27th, 2008, Delft, Netherlands. PPT or PDF.
  
• Hales, D. (2008) DELIS SP5: Biologically Inspired Techniques for "Organic IT" Final Year Report. Final DELIS review, Barcelona, Fab 29th 2008. PPT or PDF.
  
• Hales, D. (2008) Towards a group selection design pattern. DELIS final workshop, Barcelona, Feb 27-28, 2008. PPT or PDF.
  
• Hales, D. (2008) QLecives: Quality Collectives. Proposal overview for the COSI-ICT call presented at the COSI-ICT information day, Brussels, Jan 24th 2008. PPT or PDF.
  
• Hales, D. (2008) Web *.0 ? - Combining peer production and peer-to-peer systems. Invited talk at the COSI-ICT information day, Brussels, Jan 24th 2008. PPT or PDF.
  
• Hales, D. (2007) Novel Models of Group Selection in Social Structures and Networks. Invited talk @ SOMS, ETH, Zurich, Oct. 16. PPT or PDF. Note: this talk was cancelled due to ill health at late notice. I offer my appologies for those who hoped to attend and include slides for reference.
  
• Hales, D. (2007) Rationaliy and Power: the "gap in the middle" in ICT. Position paper presented at FET COSI-ICT workshop, Dresden, Oct. 6th. PPT or PDF.
  
• Hales, D. (2007) Overview of background document for science of complex systems for socially intelligent ICT. Presented at FET COSI-ICT workshop, Dresden, Oct. 6th. PPT or PDF.
  
• Hales, D. (2007) Emergent Networks as Distributed Reputation System. Invited talk. Presented at ECCS2007 workshop: "Enhancing Social Interactions: Recommendation Systems, Reputation, P2P, Trust and Social Networks", Dresden, Oct. 4th. PDF. Watch the talk online at: http://videolectures.net/eccs07_hales_end/
  
• Hales, D. (2007) Social Simulation for Self-* Systems: An idea whose time has come?. Invited keynote talk. Presented at the 4th European Social Simulation Association (ESSA) conference, 2007, Toulouse, 13th Sept. PPT or PDF.
  
• Hales, D. (2007) Towards Cooperative Self-Organised Replica Management. Presented at SASO2007, Cambridge, Mass. July 11th. PPT or PDF.
  
• Hales, D. (2007) You are all social scientists: You just don't know it yet. Presented as a contribution to a pannel discussion at SASO2007, Cambridge, Mass. July 11th. PPT or PDF.
  
• Hales, D. (2007) Self-Organising Networks of Services without Money or Contracts. Invited talk. Presented at the SSME Workshop, Crete, May 31st. PPT or PDF.
  
• Hales, D. (2007) DELIS SP5 third year report. Presented at the DELIS internal third year meeting, Bertinoro, Italy, Jan. 23-26th. PPT or PDF.
  
• Patarin, S. & Hales, D. (2006) How to cheat BitTorrent and Why Nobody Does. Presented at the European Conference on Complex Systems (ECCS2006) by S. Patarin, Oxford, UK, PPT or PDF.
  
• Hales, D. (2006) Altruism "for free". Presented at the NANIA Workshop in Ambleside, UK on 31st August 2006. Available as: PowerPoint (500kb) or PDF (2mb), supporting movie.avi (1mb) or movie.mov (2.5mb)
• Hales, D. (2006) Simple Rewire Protocols for Cooperation in Dynamic Networks. Presented at the Bio-Inspired Workshop in Rome, Italy on 25th July 2006. Available as: PowerPoint (2mb) or PDF (2mb).
• Hales, D. (2006) Simple Rewire Protocols for Cooperation in Dynamic Networks. Presented at the Cooperation in Selfish Systems incoporating TagWorld1 (CSS-TW1) Workshop, 27th May 2006. Available as: PowerPoint (2mb) or PDF (2mb).
• Hales, D. (2006) Welcome and Motivation. Presented at the start of the Cooperation in Selfish Systems incoporating TagWorld1 (CSS-TW1) Workshop, 27th May 2006. Available as: PowerPoint (1mb) or PDF (1.7mb).
• Hales, D. (2006) Introduction to Genetic Algorithms. Guest lecture, Complex Adaptive Systems Course, University of Bologna, Dept. Computer Science, 21st March. Available as: PowerPoint (350k) or PDF (1mb). GA's with Java applets website link. Cached version of website link. Also a movie of an evolving virtual robot learning to walk mpg (1.4mb).
  
• Hales, D. (2006) Socially Inspired Approaches to Evolving Cooperation. Invited talk at University of Modena Emilia-Romagna, Feb 28th. PowerPoint (380k) or PDF (560k)
  
• Hales, D. (2006) SLAC and SLACER: Simple copy & rewire algorithms for trust and cooperation in P2P. Presented at the DELIS SP3/SP4 intneral workshop, Paderborn, Germany, Jan 19th. Available as PowerPoint (2mb) or PDF (2mb).
  
• Hales, D. (2006) DELIS SP5 second year report and future directions. Presented at the DELIS internal second year meeting, Paderborn, Germany, Jan. 18-19th. Available as PowerPoint (3mb) or PDF (5mb).
  
• Hales, D. (2005) SLACER: randomness to cooperation in peer-to-peer networks. Presented at the Workshop on Stochasticity in Distributed Systems (STODIS'05) co-located with the IEEE CollaborateCom Conference, Dec. 19, 2005. San Jose, CA. Available as PowerPoint (1mb) or PDF (1.5mb).
  
• Hales, D. (2005) Putting Evolution into Networks for Cooperation. Presented at the DELIS CCT2 internal meeting, Patras, Greece, Dec. 10th. Not available.
  
• Hales, D. (2005) Tribal Programming for a Better World. Invited talk at the Multi-Agents for modeling Complex Systems (MA4CS'05) workshop at the European Conference on Complex Systems (ECCS'05), Nov. 18th, Paris, France. Rough notes from talk available as PDF (30kb).
  
• Hales, D. (2005) Emergent Group-Like Selection in a Peer-to-Peer Network. Presented at the European Conference on Complex Systems (ECCS'05), Nov. 16th, Paris, France. Available as: PowerPoint (1.4mb) or PDF (1mb).
• Hales, D. (2005) Altruism "for free" using Tags. Presented at the European Conference on Complex Systems (ECCS'05), Nov. 14th, Paris, France. Available as: PowerPoint (400kb) or PDF (1.7mb).
  
• Hales, D. (2005) Neo-Tribes for trust and cooperation in P2P. Presented at the 3rd European Social Simulation Association (ESSA 2005) conference, Koblenz, Germany, Sept 6-9 2005. Available as PowerPoint (1.9mb) or PDF (7.2mb).
  
• Hales, D. (2005) SLAC and SLACER: Simple copy & rewire algorithms for trust and cooperation in P2P. Presented at the Conference: Algorithmic Aspects of Large Complex Networks, Dagstuhl, Germany, Sept 5-9 2005. Available as PowerPint (2mb) or PDF (6.7mb).
  
• Hales, D. (2005) Evolving networks for cooperation. Presented at the DELIS CCT3 internal meeting, Dagstuhl, Germany, Sept 3-4 2005. Available as PowerPint (1.2mb) or PDF (5mb).
  
• Hales, D. (2005) Evolving P2P overlay networks with Tags, SLAC and SLACER for Cooperation and possibly other things… Presented at the DELIS SP6 internal meeting in Saarbrucken, Germany, July 19-20 2005. Available as PowerPoint (1.1mb) or PDF (3.3mb).
  
• Hales, D. (2005) Choose Your Tribe! - Evolution at the Next Level in a Peer-to-Peer Network. Presented at the 3rd Workshop on Engineering Self-Organising Applications (EOSA 2005) located with the AAMAS 2005 conference, July 26th, 2005, Utrect, Netherlands. Available as PowerPoint (1.4mb) or PDF (4.6mb). Also see animation of evolving network structure GIF (4.1mb) or PowerPoint (4.6mb) and pdf snapshots at various cycles.
  
• Hales, D. (2005) DELIS SP5 - Implementation Plan months 13-30 Overview + WP5.3 Detail. Presented at the DELIS SP5 meeting in Barcelona, July 8th 2005. Available as PowerPoint (806k) or PDF (6.3mb).
  
• Hales, D. (2005) Socially Inspired Approaches to Evolving Cooperation. Guest lecture, Self-managing information systems course, University of Bologna, Dept. Computer Science, 1st of June. Available as: PowerPoint (380k) or PDF (28mb).
  
• Hales, D. (2005) Engineering with Sociological Metaphors: Examples and Prospects. Presented at the AISB2005 Symposium - Engineering with Social Metaphors, University of Hertfordshire, UK, April 14th. Contains workshop intro. slides, my talk and final workshop discussion slide. Available as PowerPoint or PDF.
• Hales, D. (2005) Finding Cooperative (tag-based) Stereotypes with Semi-Automated Searching. Presented at the AISB2005 Symposium - Emerging Artificial Societies, University of Hertfordshire, UK, April 13th. Available as PowerPoint or PDF.
  
• Hales, D. (2005) Introduction to Genetic Algorithms. Guest lecture, Complex Adaptive Systems Course, University of Bologna, Dept. Computer Science, 15th of March. Available as: PowerPoint (80k) or PDF (116k). GA's with Java applets website link. Cached verson of website link.
  
• Hales, D. (2005) Recent directions in DELIS / Overview of on-going work. Presented at the BISON internal project meeting Dresden, Germany 18th of Jan 2005. Available as: PowerPoint (976KB) or PDF (37mb)
• Mollona, E. & Hales, D. (2004) Knowledge-Based Jobs and the Boundaries of Firms - Agent-based simulation of Firms Learning and Workforce Skill Set Dynamics. Presetned at the Wild@Ace workshop, Dec 3-4, Torino, Italy. Available as: PowerPoint (416KB) or PDF (12.5mb)
• Hales, D. (2004) Understanding Tag Systems by Comparing Tag Models. Presented at the Second Model-to-Model Workshop (M2M2) co-located with the Second European Social Simulation Association Conference (ESSA'04) at Valladolid, Spain 16-19th of Sept 2004. Available as: PowerPoint (1.4MB) or PDF(8.2mb)
• Hales, D. (2004) From Selfish Nodes to Cooperative Networks – Emergent Link-based Incentives in Peer-to-Peer Networks. Presented at The Fourth IEEE International Conference on Peer-to-Peer Computing (p2p2004), 25-27 August 2004, Zurich, Switzerland. Available as: PowerPoint (524KB) or PDF (3.2mb)
• Hales, D. (2004) Information wants to be free - and it will be! Three slides presented at the pannel discussion of The Fourth IEEE International Conference on Peer-to-Peer Computing (P2P2004), 25-27 August 2004, Zurich, Switzerland. Available as: PowerPoint (144KB) or PDF (88KB)
• Hales, D. (2004) Self-Organising, Open and Cooperative P2P Societies – From Tags to Networks. Presented at the 2nd Workshop on Engineering Self-Organsing Applications (ESOA 2004) located with the AAMAS 2004 conference, New York, July 2004. Available as: PowerPoint (752KB) or PDF (5.8mb)
• Hales, D. (2004) Change Your Tags Fast! - a necessary condition for cooperation? Presented at the MAMABS workshop located with the AAMAS 2004 conference, New York, July 2004. Available as: PowerPoint (1.2mb) or PDF (7.7mb)
• Hales, D. (2004) Cooperation with Strangers. Short summary of work in progress presented at FuDiCo II: S.O.S. Survivability: Obstacles and Solutions, the 2nd Bertinoro Workshop on Future Directions in Distributed Computing. 23-25 June 2004. Available as: PowerPoint (188KB) or PDF(716KB)
• Hales, D. (2004) Self-Organising, Open and Cooperative P2P Societies – From Tags to Networks. Presented at the BISON meeting in Bertinoro 2-3 June 2004 and very briefly summarised at the Self-* workshop (31 May - 2nd June 2004) slot on work in progress.  Here new results are presented since the dept. seminar given previously. Available as: PDF (3.5mb)
• Hales, D. (2004) Self-Organising, Open and Cooperative P2P Societies – From Tags to Networks. Presented at the University of Bologna, Dept of Computer Science (seminar), 27th of April 2004. Available as: PowerPoint (768KB) or PDF (6.3mb)
• Hales, D. (2004) Example of Application of a Biological / Social Metaphore to DELIS-like Problem. Presented at the DELIS kick-off meeting (internal SP5) 19th of March 2004 in Paderborn, Germany. Available as: PowerPoint (96KB) or PDF (200KB)
• Hales, D. (2004) Outline of DELIS Subproject 5 Internal meeting. Presented at the DELIS kick-off meeting (internal SP5) 19th of March 2004 in Paderborn, Germany. Available as: PowerPoint (136KB) or PDF (376KB)
• Hales, D. (2004) Outline of Uninversity of Bologna Involvement in the DELIS project. Presented at the DELIS internal kick-off meeting 18th of March 2004 in Paderborn, Germany. Available as: PowerPoint (160KB) or PDF (1.4mb)
• Rouchier, J. & Hales, D. (2003) How To Be Loyal, Rich And Have Fun Too - The Fun Is Yet To Come. Presented at the 1st ESSA Conference in Groningha on the 21st of Sept. 2003. Available as: PowerPoint (196KB) or PDF (1.2mb)
• Hales, D. (2003) Evolving Social Rationality for MAS using "Tags" - Trying to "make things work" by applying results gained from Agent-Based Social Simulation. Presented at the AAMAS03 Conference in Melbourne on the 17th of July 2003. Available as: PowerPoint (168KB) or PDF (428KB)
• Hales, D. (2003) Can Tags Build Working Systems? From MABS to ESOA - Attempting to apply results gained from Multi-Agent-Based Social Simulation (MABSS) to Engineering Self-Organising Applications (ESOA). Presented at the ESOA workshop in Melbourne (as part of AAMAS03) on the 15th of July 2003. Available as: PowerPoint (240KB) or PDF (564KB)
• Hales, D. (2003) Welcome to MABS2003 - An brief introduction to the MABS2003 workshop. Presented at the start of the MABS workshop in Melbourne (as part of AAMAS03) on the 14th July 2003. Available as PowerPoint (75KB).
• Hales, D. (2003) Putting "tags" to work - Attempting to apply results gained from agent-based social simulation (ABSS) to multi-agent systems (MAS). Presented at the University of Bologna, Dept of Computer Science 29th May 2003. Available as: PowerPoint (235KB).
• Edmonds, B. & Hales, D. (2003) Replication, Replication and Replication - Some Hard Lessons from Model Alignment. Presented at theM2M Workshop 31st March and 1st April 2003 in Marseilles, France. Also contains some summary information about the workshop on the last few slides. Available as: PowerPoint (564KB) or PDF (15.7mb)
• Hales, D. (2002) Evolving Specialisation, Altruism & Group-Level Optimisation Using Tags - The emergence of a group identity? Presented at the EPSRC Network on Evolvability in Biological & Software Systems, Workshop on Evolvability and Individuality, St. Albans, Sept. 2002. Available as: PowerPoint (184KB) or PDF (324KB)
• Hales, D. (2002) Neg-o-Net v2.0. Presented at the FIRMA internal workshop, Koblenz, Sept. 2002. Available as: PowerPoint (100KB) or PDF (3.5mb)
• Hales, D. (2002) Evolving Specialisation, Altruism and Group-Level Optimisation Using Tags. Presented to the MABS'02 workshop at the AAMAS 2002 Conference. July 2002. Available as: PowerPoint (72KB) or PDF (172KB)
• Hales, D. (2002) The Evolution of Specialization in Groups. Presented to the RASTA'02 workshop at the AAMAS 2002 Conference. July 2002. Available as: PowerPoint (131KB) or PDF (436KB)
• Hales, D. & Douce, C. (2002) Agent Based Modelling of Software Organisations. Presented at he 14th Annual Workshop of the Psychology of Programming Interest Group, Brunel University, London, UK. June 2002. Available as: PowerPoint (30KB) or PDF (52KB)
• Hales, D. (2002) Neg-o-Net v1.0. Presented at the FIRMA internal workshop, Maastricht, April 2002. Available as: PowerPoint (100KB) or PDF (1.8mb)
  
• Hales, D. (2001) From Part-Net to Neg-o-Net? Presented at the Institute of Environmental Change, FIRMA internal modelling workshop, Oxford, December 2001. Available as: PowerPoint (64KB) or PDF (2.8mb)
• Hales, D. (2001) Evolving cooperation in one-time interactions with strangers. Was to be presented at IP-CNR Rome. 18th Dec (cancelled). Available as: PowerPoint (122KB) or PDF (320KB)
• Hales, D. (2001) Norms as a socio-cognitive process not objects. Presented at the ABSS SIG AgentLinkII workshop, December 2001, Amsterdam. Available as: PowerPoint (56KB) or PDF (120KB)
• Hales, D. (2001) Tags Produce Cooperation in the Prisoner's Dilemma. Presented at the SimSocV workshop: "The frontiers of social science simulation", September 2001, Kazimierz Poland. Available as: PowerPoint (100KB) or PDF (240KB)
  
• Hales, D. (1998) Viruses Can Be Good Guys Too - May I Infect You?. Invited talk presented at the UCL AI seminar series, September 1998, University College London, UK.
• Hales, D. (1998) Artificial Societies, Theory Building and "Ceduction". Presented at the CRESS workshop: "The Potential of Computer Simulation in the Social Sciences", January 1998, University of Surrey, UK. No slides are available but see this chapter of my thesis for the basic idea.

Contact Details

Dr David Hales Delft University of Technology Department EWI/PDS/Tribler PO Box 5031 2600 GA Delft The Netherlands

Email: dave (at) davidhales.com Web: www.davidhales.com Tel: +31 (0)1527 85804 (office) Tel: +44 (0) 208 133 4466 (skype-in with voicemail) Fax: +31 (0)1527 86632 (please put for atten. of David Hales)