papers

 

Paraskevas V. Lekeas. An Evolutionary Approach to Coalition Formation, 2014 ( CoRR )

Paraskevas V. Lekeas and Giorgos Stamatopoulos. Cooperative oligopoly games with boundedly rational firms. Accepted. Annals of Operations Research, 2014, Springer  ( DOI )

Paraskevas V. Lekeas. A Game Theoretic Approach for Resource Usage. Resource Discovery (RED) 2012, LNCS 8194, pp. 45--55, Z. Lacroix, E. Ruckhaus, and M.-E. Vidal (Eds.): Springer, Heidelberg (2013) ( DOI )

Paraskevas V. Lekeas. Coalitional Beliefs in Cournot Oligopoly TU-games. International Game Theory Review, Vol. 15, No. 1 (2013), World Scientific ( DOI )

Paraskevas V. Lekeas. Should I quit using my Resource? Modeling Resource usage through Game Theory. Resource Discovery, Fifth International Workshop, RED 2012, Herakleion, Crete, Greece, May 27, 2012 (in conj. with 9th Extended Semantic Web Conference ( ESWC 2012 , CoRR ))

Paraskevas V. Lekeas and Giorgos Stamatopoulos. Cooperative Oligopoly Games with Boundedly Rational Firms. Accepted, GAMES 2012, Fourth Congress of the Game Theory Society, July 22-26, 2012, Istanbul, Turkey ( GAMES 2012 , CoRR )

Paraskevas V. Lekeas. Difficulties in Teaching Introductory Programming Language courses. A case study (In Greek). CIE2011 – 3rd  Conference on Informatics in Education, 8 – 9 Oct. 2011, Peiraeus, Greece. Proceedings published by Greek Computer Society, ISBN 978-960-6759-78-9 ( proceedings )

Paraskevas V. Lekeas and Giorgos Stamatopoulos. Cooperative oligopoly games: a probabilistic approach. International Workshop on Game Theory, Tel Aviv, Israel, June 20-23, 2011 ( CoRR )

Paraskevas V. Lekeas and Giorgos Stamatopoulos. Strategic delegation in a Stackelberg Game with Multiple stages. International Game Theory Review, Vol. 13, No. 3 (2011) 341-352, World Scientific ( CoRR , DOI )

Viktor Kyritsis, Paraskevas V. Lekeas, Dora Souliou and Foto Afrati. A New Framework for Join Product Skew. Resource Discovery, Third International Workshop, RED 2010, Paris, France, November 5, 2010, Revised Selected Papers, LNCS, vol. 6799, Springer, 2012 ( CoRR , DOI )

Yannis Delveroudis, Paraskevas V. Lekeas, Dora Souliou: On Estimating Semantic Loss in Peer Data Management Systems. AP2PS 2009, October 11 – 16, 2009,  Malta. ( DOI )

Foto N. Afrati, Paraskevas V. Lekeas, Chen Li: Adaptive Sampling Algorithms for Answering Aggregation Queries on Web Sites. Data and Knowledge Engineering, Elsevier, Vol. 64, Issue 2, February 2008, Pages 462-490. ( DOI )

Yannis Delveroudis, Paraskevas Lekeas: Managing Semantic Loss during Query Reformulation in Peer Data Management Systems. The Third IEEE International Workshop on Databases for Next-Generation Researchers, SWOD 2007, (held in conjunction with ICDE 2007), April 15, 2007, Istanbul, Turkey. ( DOI )

Paraskevas V. Lekeas: Psychological Schemata of Learning and URLs.  2nd International Conference on Interdisciplinarity in Education, ICIE 2006, May 11-13, 2006, Athens, Greece.

Foto N. Afrati, Paraskevas V. Lekeas, Chen Li: Answering Aggregation Queries on Hierarchical Web Sites Using Adaptive Sampling. CIKM'2005, 31st October - 5th November, 2005 Bremen, Germany, (also the full version as a Technical Report, UCI ICS, August 2005). ( DOI )

Paraskevas V. Lekeas: Observing spatial and temporal metadata in hostnames. Journal of Information & Knowledge Management, Vol. 3, No. 1 (2004) 97-106, ISSN: 0219-6492.  ( DOI )

Paraskevas V. Lekeas: Sampling a web subgraph. Wseas Transactions on Computers, Issue 3, Volume 2, July 2003, ISSN 1109-2750. 

Paraskevas V. Lekeas: An IP sampling Method for Web and Internet mining (In Greek), PhD Dissertation National Technical University of Athens, 2003. (Supervisor: Foto N. Afrati). ( DSPACE , NDC )

Paraskevas V. Lekeas: A static algorithm for frequency allocation in rings of odd length (In Greek), Msc_Thesis. Logic Algorithms and Computation Inter - university program of graduate studies, Department of Mathematics, University of Athens, 1999. ( DSPACE )