Selected Publications

• P. Liakos, A. Ntoulas and A. Delis,
  ``Uncovering Local Hierarchical Overlapping Communities at Scale'',
  IEEE Transactions on Big Data,
  to appear.
  pdf, bib
• P. Liakos, K. Papakonstantinopoulou, A. Ntoulas and A. Delis,
  ``DiCeS: Detecting Communities in Network Streams over the Cloud'',
  Proc. of 12th IEEE Int. Conf. on Cloud Computing (CLOUD'19),
  Milan, Italy, July 2019.
  pdf, bib
• T. Michailidis, A. Delis and M. Roussopoulos,
  ``MEGA: Overcoming Traditional Problems with OS Huge Page Management'',
  Proc. of 12th ACM Int. Conf. on Systems and Storage (SYSTOR19),
  Haifa, Israel, June 2019.
  pdf, bib
• N. Chondros, B. Zhang, T. Zacharias, P. Diamantopoulos, S. Maneas, C. Patsonakis, A. Delis, A. Kiayias, and M. Roussopoulos,
  ``Distributed, End-to-end Verifiable, and Privacy-preserving Internet Voting Systems'',
  Computers & Security,
  vol. 83, pp. 268-299, June 2019.
  pdf, bib
• E. Karatzas, G. Minadakis, G. Kolios, A. Delis and G.M. Spyrou,
  ``A Web Tool for Ranking Candidate Drugs Against a Selected Disease Based on a Combination of Functional and Structural Criteria'',
  Computational and Structural Biotechnology Journal,
  vol. 17, pp. 939-945, April 2019.
  pdf, bib
• P. Vlantis and A. Delis,
  ``On-line Big-Data Processing for Visual Analytics with Argus-Panoptes'',
  Proc. of 4th Int. Symp. on Algorithmic Aspects of Cloud Computing (AlgoCloud18),
  Helsinki, Finland, August 2018.
  pdf, bib
• P. Liakos, K. Papakonstantinopoulou and A. Delis,
  ``Realizing Memory-Optimized Distributed Graph Processing,''
  IEEE Transanctions on Knowledge and Data Engineering,
  vol. 30, no. 4, pp. 743-756, April 2018.
  pdf, bib
• P. Liakos, A. Ntoulas and A. Delis,
  ``CoEuS: Community Detection via Seed-set Expansion on Graph Streams,''
  Proc. of the 2017 IEEE Int. Conf. on Big Data (BigData'17),
  Boston MA, December 2017.
  pdf, bib
• P. Liakos, A. Ntoulas and A. Delis,
  ``Rhea: Adaptively Sampling Authoritative Content from Social Activity Streams,''
  Proc. of the 2017 IEEE Int. Conf. on Big Data (BigData'17),
  Boston MA, December 2017.
  pdf, bib
• K. Tsakalozos, V. Verroios, M. Roussopoulos and A. Delis,
  ``Live VM Migration under Time-Constrains in Share-Nothing IaaS-Clouds,''
  IEEE Transactions in Parallel and Distributed Systems (TPDS),
  vol. 28, no. 9, pp. 2285-2298, August 2017.
  http://dx.doi.org/10.1109/TPDS.2017.2658572
  pdf, bib
• P. Liakos, A. Ntoulas and A. Delis,
  ``Scalable Link Community Detection: A Local Dispersion-aware Approach,''
  Proc. of the 2016 IEEE Int. Conf. on Big Data (BigData'16),
  Washington DC, December 2016.
  pdf, bib
• P. Liakos, K. Papakonstantinopoulou and A. Delis,
  ``Memory-Optimized Distributed Graph Processing through Novel Compression Techniques'',
  Proc. of the 25th ACM Int. Conf. on Information and Knowledge Management (CIKM '16),
  Indianapolis, IN, October 2016.
  pdf, bib
• K. Tsakalozos, S. Evangelatos, F. Psallidas, M.R. Viera, V.J. Tsotras and A. Delis,
  ``DiVA: Using Application-Specific Policies to `Dive' into Vector Approximations,''
  The Computer Journal, Oxford Univ. Press,
  vol. 59, no. 9, pp. 1363--1382, October 2016.
  http://dx.doi.org/10.1093/comjnl/bxv097
  pdf, bib
• P. Liakos, I. Angelidis and A. Delis,
  ``Cooperative Routing and Scheduling of an Electric Vehicle Fleet Managing Dynamic Customer Requests,''
  Proc. of the Int. Conf. on Cooperative Information Systems (CoopIS'16),
  pp. 118-135, Rhodes, Greece, October 2016.
  pdf, bib
• M. Papakonstantinou and A. Delis,
  ``PolyRecs: Improving Page-View Rates Using Real-Time Data Analysis,'',
  Proc. of 10th Int. Workshop on Enabling Real-Time Business Intelligence (BIRTE '16),
  New Delhi, India, September 2016.
  pdf, bib.
• P. Liakos, A. Ntoulas, A. Labrinidis and A. Delis,
  ``Focused Crawling for the Hidden Web'',
  World Wide Web Journal (WWWJ)
  vol. 19, no. 4, pp. 605--631, July 2016.
  http://dx.doi.org/10.1007/s11280-015-0349-x
  pdf, bib
• M. Pantazoglou, G. Tzortzakis and A. Delis,
  ``Decentralized and Energy-Efficient Workload Management in Enterprise Clouds'',
  IEEE Transactions on Cloud Computing (TCC),
  vol. 4, no. 2, pp. 196-209, June, 2016.
  http://dx.doi.org/10.1109/TCC.2015.2464817
  pdf, bib
• N. Chondros, B. Zhang, T. Zacharias, P. Diamantopoulos, S. Maneas, C. Patsonakis, A. Delis, A. Kiayias, and M. Roussopoulos,
  ``D-DEMOS: A Distributed, End-to-end Verifiable, Internet Voting System,''
  Proc. of the 36th IEEE Int. Conf. on Distributed Computing Systems (ICDCS'16)
  Osaka, Japan, June 2016.
  pdf, bib.
• P. Liakos, K. Papakonstantinou, M. Sioutis, K. Tsakalozos and A. Delis,
  ``Pinpointing Influence in Pinterest,''
  Proc. of the 2nd Int. Workshop on Social Influence Analysis (co-located with IJCAI-16),
  New York, NY, June 2016.
  pdf, bib.
• G. Tzortzakis, E. Katsiri Democritus, G. Karavokiros, C. Makropoulos and A. Delis,
  ``Tethys: Sensor-based Aquatic Quality Monitoring in Waterways,''
  Proc. of 17th IEEE Int. Conf. on Mobile Data Management (MDM'16),
  Porto, Portugal, June 2016.
  pdf, bib
• V. Moustakas, H. Akcan, M. Roussopoulos and A. Delis,
  ``Alleviating the Topology Mismatch Problem in Distributed Overlay Networks: A Survey'',
  Journal of Systems and Software (JSS),
  vol. 113, pp. 216-245, March 2016.
  http://dx.doi.org/10.1016/j.jss.2015.11.038
  pdf, bib
• P. Liakos, P. Koltsida, G. Kakaletris, P. Baumann, Y. Ioannidis and A. Delis,
  ``A Distributed Infrastructure for Earth-Science Big Data Retrieval'',
  Int. Journal of Cooperative Information Systems (IJCIS),
  vol. 24, no. 7, pp. 1-32, June 2015.
  pdf, bib
• P. Liakos and A. Delis,
  ``An Iterative Freight-pooling Service for Efficient Last-mile Delivery,''
  Proc. 16th IEEE Int. Conf. on Mobile Data Management-PhD Forum (MDM'15),
  Pittsburgh, PA, June 2015.
  pdf, bib
• A. Antoniadis, Y. Gerbessiotis, M. Roussopoulos and A. Delis,
  ``Tossing NoSQL-Databases out to Public Clouds'',
  Proc. of the 7th IEEE/ACM Int. Conf. on Utility and Cloud Computing (UCC'14)
  London, United Kingdom, December 2014.
  pdf, bib
• A. Delis, K. Gavatha, A. Kiayias, C. Koutalakis, E. Nikolakopoulos, M. Roussopoulou,
  G. Sotirellis, P. Stathopoulos, L. Paschos, P. Vasilopoulos, T. Zacharias and B. Zhang,
  ``Pressing the Button for European Elections: Verifiable E-voting and
  Public Attitudes towards Internet Voting in Greece,''
  Proc. of 6th IEEE Int. Conf. on Electronic Voting: Verifying the Vote (EVOTE 2014),
  Lochau-Bregenz, Austria, October 2014.
  pdf, bib
• K. Tsakalozos, V. Verroios, M. Roussopoulos and A. Delis,
  ``Time-Constrained Live VM Migration in Share-Nothing IaaS-Clouds'',
  Proc. of the 7th IEEE Int. Conf. on Cloud Computing (CLOUD'14),
  Anchorage, AK, June 2014.
  pdf, bib
• V. Atlidakis, M. Roussopoulos and A. Delis,
  ``Unleashing the Potential of the Unchoking Policy of the Bittorrent Protcol'',
  Journal of Parallel and Distributed Computing (JPDC),
  vol. 74, no. 1, pp. 1959-1970, January 2014.
  ps, pdf, bib
• N.R. Katsipoulakis, K. Tsalalozos and A. Delis,
  ``Adaptive Live VM Migration in Share-Nothing IaaS-Clouds with LiveFS",
  Proc. of the 5th IEEE Int. Conf. on Cloud Computing Technology and Science (CloudCom 2013),
  Bristol, UK, December 2013.
  pdf, bib
• F. Psallidas, A. Ntoulas and A. Delis,
  ``SocWeb: Efficient Monitoring of Social Network Activities'',
  Proc. of the 14th Int. Conf. on Web Information Systems Engineering (WISE'13)
  pp. 118-136, Nanjing, PR China, October 2013.
  pdf, bib
• S. Georgiou, K. Tsakalozos and A. Delis,
  ``Exploiting Network-Topology Awareness for VM Placement in IaaS Clouds'',
  Proc. of 3rd Int. IEEE Conf. on Cloud and Green Computing (CGC'13),
  Karlsrue, Germany, September 2013.
  ps, pdf, bib
• K. Tsakalozos, M. Roussopoulos and A. Delis,
  ``Hint-based Execution of Workloads in Clouds with Nefeli'',
  IEEE Transactions on Parallel and Distributed Systems (TPDS),
  vol. 24, no. 7, pp.1331-1340, July 2013.
  pdf, bib
• V. Atlidakis, M. Roussopoulos and A. Delis
  ``Changing the Unchoking Policy for an Enhanced Bittorrent'',
  Int. European Conf. on Parallel and Distributed Computing (Euro-Par 2012),
  pp. 377-388, Rhodes, Greece, August 2012, DOI: 10.1007/978-3-642-32820-6_38
  pdf, bib
• Z. Chen, M. Roussopoulos, Z. Liang, Y. Zhang, Z-R. Chen and A. Delis,
  ``Malware Characteristics and Threats on the Internet Ecosystem'',
  Journal of Systems and Software (JSS),
  vol. 85, no. 7, pp. 1650-1672, July 2012, DOI: 10.1016/j.jss.2012.02.015
  pdf, bib
• V. Verroios, Carmen Ruiz-Vicente and A. Delis,
  ``Alerting for Vehicles Demonstrating Hazardous Driving Behavior'',
  11th Int. ACM Workshop on Data Engineering for Wireless and Mobile Access (MobiDE 2012),
  Scottsdale, AZ, May 2012.
  pdf, bib
• T. Chondrogiannis and A. Delis,
  ``A Geography-aware Service Overlay Network for Managing Moving Objects'',
  11th Int. ACM Workshop on Data Engineering for Wireless and Mobile Access (MobiDE 2012),
  Scottsdale, AZ, May 2012.
  pdf, bib
• K. Tsakalozos, M. Roussopoulos and A. Delis,
  ``VM Placement in non-Homogeneous IaaS-Clouds'',
  Proc. of the 9th Int. Conf. on Service Oriented Computing (ICSOC 2011),
  Paphos, Cyprus, December 2011.
  pdf, bib


• K. Saidis, Y. Smaragdakis and A. Delis,
  ``DOLAR: Virtualizing Heterogeneous Information Spaces to Support their Expansion,''
  Software: Practice and Experience,
  vol. 41, no. 11, pp. 1349-1383, October 2011, DOI: 10.1002/spe.1050
  pdf, bib


• K. Tsakalozos, S. Evangelatos and A. Delis,
  ``DiVA: Indexing High-Dimensional Data by "Diving" into Vector Approximations
  Proc. of the IEEE Int. Conf. on Multimedia and Expo (ICME'11)
  Barcelona, Spain, July, 2011.
  pdf, bib


• V. Verroios, V. Efstathiou and A. Delis,
  ``Reaching Available Public Parking Spaces in Urban Environments using Ad-hoc Networking,"
  Proc. of the 12th IEEE Int. Conf. on Mobile Data Management (MDM'11) Lulea, Sweden, June 2011.
  ps, pdf, bib


• A. Deligiannakis, Y. Kotidis, V. Stoumpos and A. Delis,
  ``Collection Trees for Event-Monitoring Queries,''
  Information Systems,
  vol. 36, no. 2, pp. 386-405, April 2011, doi:10.1016/j.is.2010.08.003
  pdf, bib


• K. Tsakalozos, H. Kllapi, E. Sitaridi, M. Roussopoulos, D. Paparas and A. Delis,
  ``Flexible Use of Cloud Resources through Profit Maximization and Price Discrimination,''
  Proceedings of the 27th IEEE Int. Conf. on Data Engineering (ICDE'11) Hannover, Germany, April 2011.
  pdf, bib


• H. Akcan, V. Kriakov, H. Bronnimann and A. Delis,
  ``Managing Cohort Movement of Mobile Sensors via GPS-free & Compass-free Node Localization,''
  Journal of Parallel and Distributed Computing,
  vol. 70, no. 7, pp. 743-757, July 2010, doi:10.1016/j.jpdc.2010.03.007
  pdf, bib


• K. Tsakalozos, M. Roussopoulos, V. Floros and A. Delis,
  ``Nefeli: Hint-based Execution of Workloads in Clouds,''
  Proc. of the 30th IEEE Int. Conf. of Distributed Computing Systems, Genoa, Italy, June 2010.
  ps, pdf, bib


• Z. Chen, Y. Zhang, Z.R. Chen and A. Delis,
  ``A Digest and Pattern Matching-Based Intrusion Detection Engine,''
  The Computer Journal vol. 52, no. 6, pp. 699-723, August 2009.
  pdf, bib


• V. Kriakov, G. Kollios and A. Delis,
  ``Self-tuning Management of Update Intensive Multidimensional Data in Clusters of Workstations,"
  The VLDB Journal vol. 18, no. 3, pp. 739-764, June, 2009.
  pdf, bib


• Z. Chen, A. Delis and P. Wei,
  ``A Pragmatic Methodology for Testing Intrusion Prevention Systems,''
  The Computer Journal, Oxford Univ. Press,
  vol. 52, no. 4, pp. 429-460, April, 2009.
  ps, pdf, bib


• K. Tsakalozos, V. Kriakov and A. Delis,
  FlexFS: Transparent Resilience for GRID Storage Resources, ''
  Proc. of 9th IEEE International Symposium on Autonomous Decentralized Systems (ISADS 2009)
  Athens, Greece, March, 2009.
  ps, pdf, bib.


• A. Deligiannakis, Y. Kotidis, V. Vassalos, V. Stoumpos and A. Delis,
  `` Another Outlier Bites the Dust: Computing Meaningful Aggregates in Sensor Networks,''
  Proc. of the 25th Int. Conf. on Data Engineering (ICDE)
  Shanghai, China, March, 2009.
  pdf, bib.


• I. Pogkas, V. Kriakov, Z. Chen and A. Delis
  ``Adaptive Neighborhood Selection in Peer-to-peer Networks based on Content Similarity and Reputation,''
  Peer-to-Peer Networking and Applications vol. 2, no. 1, pp. 37-59, March 2009.
  pdf, bib


• V. Stoumpos and A. Delis,
  ``Fragment and Replicate Algorithms for Non-Equi-Join Evaluation on Smart Disks,''
  Proc. of 9th IEEE International Symposium on Autonomous Decentralized Systems (ISADS 2009)
  Athens, Greece, March, 2009.
  pdf, bib.


• K. Tsakalozos, V. Stoumpos, K. Saidis and A. Delis,
  ``Adaptive Disk Scheduling with Workload-dependent Anticipation Intervals,''
  Journal of Systems and Software, Elsevier Press,
  vol. 82, no. 2, pp. 274-291, February, 2009.
  ps, pdf, bib


• A. Papadimitriou and A. Delis,
  ``Data Dissemination in Unstructured Peer-to-Peer Networks'',
  37th Intrnational Conference on Parallel Processing (ICPP'08),
  Portland, OR, September 2008.
  ps, pdf, bib,


• V. Verroios, K. Kollias, P.K. Chrysanthis and A.Delis,
  ``Adaptive Navigation of Vehicles in Congested Road Networks,''
  International Conference on Pervasive Services (ICPS'08), ACM Press
  Sorrento, Italy, July, 2008.
  ps, pdf, bib


• Z. Chen, P. Wei and A. Delis,
  ``Catching Remote Administration Trojans (RATs),''
  Software: Practice and Experience
  vol. 38, no. 7, p.p. 667-703, June 2008.
  pdf, bib


• A. Deligiannakis, V. Stoumpos, Y. Kotidis, V. Vassalos and A. Delis,
  ``Outlier-Aware Data Aggregation in Sensor Networks,''
  IEEE International Conference on Data Engineering (ICDE'08) poster paper,
  Cancun, Mexico, April 2008.
  pdf, bib


• V. Stoumpos, A. Deligiannakis, Y. Kotidis and A. Delis,
  ``Processing Event-Monitoring Queries in Sensor Networks,''
  IEEE International Conference on Data Engineering (ICDE'08) poster paper,
  Cancun, Mexico, April 2008.
  pdf, bib


• Z. Chen, A. Delis and P. Wei,
  ``Identification and Management of Sessions Generated by Instant Messaging and Peer-to-Peer Systems,"
  International Journal of Cooperative Information Systems,
  vol. 17, no. 2, p.p. 1-49, March 2008.
  pdf, bib


• V. Kriakov, A. Delis and G. Kollios,
  ``Approximate Data Stream Joins in Distributed Systems,''
  Proceedings of the 27th IEEE International Conference on Distributed Computing Systems (ICDCS '07),
  Toronto, CA, June 2007.
  pdf, bib


• Y. Kotidis, A. Deligiannakis, V. Stoumpos, V. Vassalos and A. Delis,
  ``Robust Management of Outliers in Sensor Network Aggregate Queries,''
  Proceedings of the 6th ACM International Workshop on Data Engineering for Wireless and Mobile Access (Mobide'07) ,
  Beijing, China, June 2007.
  ps, pdf, bib


• K. Saidis and A. Delis,
  ``Type-consistent Digital Objects,''
  D-Lib Magazine,
  vol. 13, no. 5/6, doi:10.1045, May/June 2007
  html, bib


• Z. Chen, Z.R. Chen, and A. Delis,
  ``An Inline Detection and Prevention Framework for Distributed Denial of Service Attacks,''
  The Computer Journal, Oxford Univ. Press,
  vol. 50, no. 1, pp. 7-40, January 2007.
  ps, pdf, bibs


• V. Kalogeraki, D. Zeinalipour-Yazti, D. Gunopulos and A. Delis,
  ``Distributed Middleware Architectures for Scalable Media Services,''
  Journal of Network and Computer Applications, Elsevier Press,
  vo. 30, no. 1, pp. 209-243 , January 2007.
  pdf, bib


• V. Stoumpos and A. Delis,
  ``GRACE-based Joins on Active Storage Devices,''
  Distributed and Parallel Databases,
  vol. 20, no. 3, pp. 199-224, September 2006.
  pdf, bib


• K. Saidis, G. Pyrounakis, M. Nikolaidou and A. Delis,
  ``Digital Object Prototypes: An Effective Realization of Digital Object Types,'' ,
  Proceedings of the 10th European Conference on Research and Advanced Technology for Digital Libraries (ECDL'06),
  Alicante, Spain, September 2006.
  pdf, bib


• H. Akcan, V. Kriakov, H. Bronnimann and A. Delis,
  ``GPS-Free Node Localization in Mobile Wireless Sensor Networks,''
  Proceedings of the 5th ACM International Workshop on Data Engineering for Wireless and Mobile Access (MobiDE'06),
  Chicago, IL, June 2006.
  ps, pdf, bib


• K. Zorbadelos, C. KK Loverdos and A. Delis,
  ``Non-stop Provision of Internet Services via a Reflectively Load-Sharing Architecture,''
  Proceedings of the 5th International System Administration and Network Engineering Conference(SANE 2006),
  Delft, The Netherlands, May, 2006
  ps, pdf, bib


• A. Kyriakidou, N. Karelos, and A. Delis
  ``Video-Streaming for Fast Moving Users in 3G Mobile Networks,''
  4rth International ACM Workshop on Data Engineering for Wireless and Mobile Access (MobiDE'05)
  Baltimore, MD, June, 2005.
  ps, pdf, bib


• E. Panagos and A. Delis,
  ``Selective Replication for Content Management Environments,''
  IEEE Internet Computing,
  vol. 9, no. 3, pp. 45-51, May/June 2005.
  pdf, bib


• M. Fragouli and A. Delis,
  ``Navigation and Multi-modal Transporation with EasyTransport,''
  IEEE Intelligent Systems,
  vol. 20, no. 2, pp. 54-61, March/April 2005.
  pdf, bib


• V. Kanitkar, and A. Delis,
  ``Efficient Processing and Site Selection for Client Transactions in Real-Time,''
  Distributed and Parallel Databases,
  vol. 17, no. 1, pp. 39-74, January 2005.
  pdf, bib


• Z. Chen, A. Delis, and H.L. Bertoni,
  ``Radio-Wave Propagation Prediction using Ray-Tracing Techniques on a Network of Workstations (NOW),''
  Journal of Parallel and Distributed Computing,
  vol. 64, no. 10, pp. 1127-1156, October 2004.
  ps, pdf, bib


• K. Zorbadelos and A. Delis,
  ``Enhancing DNS for Improved E-mail Services on a Clustered Environment,''
  4th International System Administration and Network Engineering Conference (SANE'04)
  Amsterdam, The Netherlands, September, 2004.
  ps, pdf, bib


• T. Dariotaki and A. Delis,
  ``Detecting Reputation Variations on a P2P Network,''
  6th Workshop on Distributed Data and Structures (WDAS'04),
  Lausanne, Switzerland, July 2004.
  ps, pdf, bib


• M. Hajdieleftheriou, V. Kriakov, Y. Tao, G. Kollios, A. Delis, and V. Tsotras,
  ``Spatio-temporal Data Services in a Shared Nothing Environment,''
  16th International Conference on Scientific and Statistical Database Management (SSDBM'04),
  Santorini, Greece, June 2004.
  ps, pdf, bib


• V. Kriakov, A Delis, and G. Kollios,
  ``Management of Highly Dynamic Multidimensional Data in a Cluster of Workstations,''
  9th International Conference of Extending Database Technology (EDBT'04),
  Heraklion, Greece, March 2004.
  ps, pdf, bib


• Z. Chen, A. Delis, and H.L. Bertoni,
  ``Building Footprint Simplification Techniques and Their Effects on Radio Propagation Predictions,''
  The Computer Journal, Oxford Univ. Press,
  vol.47, no. 1, pp. 103-133, January, 2004.
  ps, pdf, bib


• Z. Chen, H.L. Bertoni, and A. Delis,
  ``Progressive and Approximate Techniques in Ray-Tracing based Radio Wave Propagation Prediction Models,''
  IEEE Transactions on Antennas and Propagation,
  vol. 52, no. 1, pp. 240-252, January 2004.
  ps, pdf, bib


• V. Kalogeraki, A. Delis, and D. Gunopoulos,
  ``Peer-to-Peer Architectures for Scalable, Efficient and Reliable Media Services'',
  IEEE International Parallel and Distributed Processing Symposium (IPDPS),
  Nice, France, April 2003.
  ps, pdf, bib


• T. Suel, C. Mathur, J. Wu, J. Zhang, A. Delis, M. Kharrazi, X Long, and K. Shanmugasunderam,
  ``ODISSEA: A Peer-to-Peer Architecture for Scalable Web Search and Information Retrieval,''
  Sixth International Workshop on the Web and Databases (WebDB),
  San Diego, CA, June 2003.
  ps, pdf, bib


• J.H. Park, V. Kanitkar, R. N. Uma, and A. Delis,
  ``Site Clustering in Three-Tier Database Architectures,''
  International Journal of Cooperative Information Systems,
  vol. 12, no. 1, pp. 91-134, March 2003.
  ps, pdf, bib


• V. Kanitkar, and A. Delis,
  ``Real-Time Processing in Client-Server Databases,''
  IEEE Transactions on Computers,
  vol. 51, no. 3, pp. 269-287, March 2002.
  ps, pdf, bib


• G. Kollios, D. Gunopulos, V.J. Tsotras, A. Delis, and M. Hadjieleftheriou,
  ``Indexing Animated Objects Using Spatiotemporal Access Methods,''
  IEEE Transactions on Knowledge and Data Engineering,
  vol. 13, no. 5, pp. 758-777, September/October 2001.
  pdf, bib


• J.H. Park, V. Kanitkar, and A. Delis,
  ``Logically Clustered Architectures for Networked Databases,''
  Distributed and Parallel Databases,
  vol. 10, no. 2, pp. 161-198, September 2001.
  pdf, bib


• V. Kanitkar, and A. Delis,
  ``Time Constrained Push Strategies in Client-Server Databases,''
  Distributed and Parallel Databases,
  vol. 9, no. 1, pp. 11-36, January 2001.
  pdf, bib


• I. Rigoutsos, and A. Delis,
  ``Managing Statistical Behavior of Large Data Sets in Shared-Nothing Architectures,''
  IEEE Transactions on Parallel and Distributed Systems,
  vol. 9, no. 11, pp. 1073-1088, November 1998.
  pdf, bib


• A. Delis, and N. Roussopoulos,
  ``Techniques for Update Handling in the Enhanced Client-Server DBMS,''
  IEEE Transactions on Knowledge and Data Engineering,
  vol. 10, no. 3, pp. 458-476, May/June 1998.
  pdf, bib


• A. Delis, and Q. LeViet,
  ``Contemporary Access Structures Under Mixed-Workloads,''
  The Computer Journal, Oxford Univ. Press,
  vol. 40, no. 4, pp. 183-193, November 1997.
  pdf, bib


• W. Thomas, A. Delis, and V. R. Basili,
  ``An Analysis of Errors in a Reuse-Oriented Development Environment,''
  Journal of Systems and Software,
  vol. 38, no. 3, pp. 1-14, September 1997.
  pdf, bib


• M. Papazoglou, A. Delis, A. Bouguettaya, and M. Haghjoo,
  ``Class Library Support for Workflow Environments and Applications,''
  IEEE Transactions on Computers,
  vol. 46, no. 6, pp. 1-14, June 1997.
  pdf, bib


• A. Beeharry, A. Bouguettaya, and A. Delis,
  ``On Distributed Persistent Objects for Interoperable Datastores,''
  Information Sciences, An International Journal,
  vol. 91, no. 1-2, pp. 1-32, May 1996.


• M. Papazoglou, A. Delis, and B. Kramer,
  ``Use of Middleware Facilities in Interoperable Databases,''
  Journal of Computer Systems Science and Engineering,
  vol. 10, no. 4, pp. 195-206, October 1995.


• E. A. Delis, and A. Delis,
  ``Automatic Fire-Code Checking using Expert System Technology,''
  Journal of Computing in Civil Engineering, American Society of Civil Engineers (ASCE),
  vol. 9, no. 2, pp. 141-157, April 1995.


• L. Raschid, T. Sellis, and A. Delis,
  ``A Simulation-Based Study on the Concurrent Execution of Rules in a Database Environment,''
  Journal of Parallel and Distributed Computing,
  vol. 20, no. 1, pp. 20-42, January 1994.


• A. Delis, and N. Roussopoulos,
  ``Performance Comparison of Three Modern DBMS Architectures,''
  IEEE Transactions on Software Engineering,
  vol. 19, no. 2, pp. 120-138, February 1993.


• A. Delis, and V. R. Basili,
  ``Ada Reusability and System Design Assessment using the Data Binding Tool,''
  International Journal of Software Engineering and Knowledge Engineering ,
  vol. 3, no. 3, pp. 287-318, November 1993.


• E. A. Delis, and A. Delis,
  ``An Expert System for Fire-Code Checking: Design, Implementation and Geometric Algorithms,''
  International Journal of Artificial Intelligence Tools,
  vol. 1, no. 4, pp. 597-627, December 1992.


• M. Fragouli and A. Delis,
  ``EasyTransport: An Effective Navigation and Transportation Guide for Wide Geographic Areas'',
  14th IEEE International Conference on Tools with Artificial Intelligence,
  Washington DC, November 2002.


• V. Kalogeraki, A. Delis, and D. Gunopoulos,
  ``Handing Multimedia Streams in a Peer-to-Peer Network'',
  Proceedings of the 2nd IEEE International Workshop on Global and Peer to Peer Computing on Large Scale Distributed Systems,
  Berlin, Germany, May 2002.


• R.D. Regan, and A. Delis,
  ``An Analysis of Main-Memory and Log Space Usage in Extended Ephemeral Logging,''
  Proceedings of the 18th British National Conference on Databases (BNCOD01),
  Oxford, United Kingdom, July 2001.


• J.H. Park, and A. Delis,
  ``On-line Realignment of Clients in Networked Databases,''
  Proceedings of the 21st IEEE International Conference on Distributed Computing Systems (IEEE-ICDCS),
  Mesa, AZ, April 2001.


• V. Kanitkar, and A. Delis,
  ``Site Selection for Real-Time Client Request Handling,''
  Proceedings of the 1999 IEEE International Conference on Distributed Computing Systems (IEEE-ICDCS),
  Austin, TX, May/June 1999.


• A. Delis, V. Kanitkar, and G. Kollios,
  ``Database Architectures,''
  in Encyclopedia of Electrical and Electronics Engineering John Webster, Editor, John Wiley and Sons,
  New York, NY, February 1999.
  ps, pdf, bib


• V. Kanitkar, and A. Delis,
  ``Two-Stage Transaction Processing in Client-Server DBMSs,''
  Proceedings of the 7th IEEE Symposium on High-Performance Distributed Computing (IEEE-HPDC),
  Chicago, IL, July 1998.


• J.H. Park, and A. Delis,
  ``The Effect of Clustering in Client-Caching Architectures,''
  Proceedings of the 7th IEEE Symposium on High-Performance Distributed Computing (IEEE-HPDC),
  Chicago, IL, July 1998.


• V. Kanitkar, and A. Delis,
  ``Real-Time Client-Server Push Strategies: Specification and Evaluation,''
  Proceedings of IEEE Real-Time Applications Symposium (IEEE-RTAS),
  Denver, Colorado, June 1998.


• V. Kanitkar, and A. Delis,
  ``A Case for Real-Time Client-Server Databases,''
  Proceedings of the 2nd International Real-Time Database Workshop(RTB),
  Burlington, Vermont, September, 1997.


• M. Papazoglou, A. Delis, M. Haghjoo, and A. Bouguettaya,
  ``Language Support for Long-Lived Concurrent Activities,''
  Proceedings of the 16th International IEEE Conference in Distributed Computing Systems (IEEE-ICDCS),
  Hong Kong, June 1996.


• I. Rigoutsos, and A. Delis,
  ``The Impact of Hashing Function Choice on the Load Balancing in Very Large Datasets,''
  8th International Conference on Software Engineering and Knowledge Engineering (SEKE),
  Lake Tahoe, Nevada, June 1996.


• A. Delis,
  ``Database Computing on Clusters of Workstations,''
  International Symposium on Software Engineering for the Next Generation, Information Processing Society of Japan,
  Nagoya, Japan, February 1996.


• S. Milliner, and A. Delis,
  ``Networking Abstractions and Protocols Under Variable Length Messages,''
  Proceedings of the 1995 IEEE International Conference on Network Protocols (IEEE-ICNP),
  Tokyo, Japan, November 1995.


• A. Delis, and N. Roussopoulos,
  ``The Page-Server versus the Enhanced Client-Server DBMS,''
  Proceedings of International Symposium on Advanced Database Technologies and Their Integration,
  Nara, Japan, October 1994.


• A. Delis, and N. Roussopoulos,
  ``Management of Updates in the Enhanced Client-Server DBMS,''
  Proceedings of the 14th International IEEE Conference in Distributed Computing Systems (IEEE-ICDCS),
  Poznan, Poland, June 1994.


• A. Delis, and N. Roussopoulos,
  ``Performance and Scalability of Client-Server Database Architectures,"
  The 18th International Conference in Very Large Data Bases (VLDB),
  Vancouver, British Columbia, Canada, August 1992.


• N. Roussopoulos, C. Chen, S. Kelley, A. Delis, and Y. Papakonstantinou,
  ``The ADMS Project: Views R Us,''
  IEEE Bulletin on Data Engineering,
  vol. 18, no. 2, pp. 19-28, June 1995.


• N. Roussopoulos, and A. Delis,
  ``Modern Client-Server DBMS Architectures,"
  Association for Computing Machinery, Bulletin of SIGMOD Record,
  vol. 20, no. 3, pp. 52-61, September 1991.