Large Scale Computer Systems

 


This strand of research has focused on large scale systems and data centres. Topics and contributions are in the areas of:

  • Big Data and Data-centric Systems
  • DDDAS and Autonomic Management
  • Large Scale Computational Infrastructures
  • Workload Optimised Systems
  • Design and Analysis of Computer Architectures

Publications

  • P. Oikonomou, N. Tziritas, T. Loukopoulos, G. Theodoropoulos, M. Hanai, S. U. Khan, “Online Algorithms for the Interval Scheduling Problem in the Cloud: Affinity Pair Threshold based Approaches”, IEEE Transactions on Sustainable Computing (TSUSC), doi:10.1109/TSUSC.2021.3133079
  • M Hanai, N Tziritas, T Suzumura, W Cai, G Theodoropoulos, “Time-Efficient and High-Quality Graph Partitioning for Graph Dynamic Scaling”, arXiv preprint arXiv:2101.07026
  • Panagiotis Oikonomou, Kostas Kolomvatsos, Nikos Tziritas, Georgios Theodoropoulos, Thanasis Loukopoulos, Georgios Stamoulis, “A Fuzzy Logic Controller for Tasks Scheduling Using Unreliable Cloud Resources”, arXiv preprint arXiv:2009.10515
  • Panagiotis Oikonomou, Kostas Kolomvatsos, Christos Anagnostopoulos, Nikos Tziritas and Georgios Theodoropoulos, “A Probabilistic Batch Oriented Proactive Workflow Management”, The 33rd  IEEE International Conference on Tools with Artificial Intelligence (ICTAI 2021), DOI: 10.1109/ICTAI52525.2021.00197
  • Panagiotis Oikonomou, Nikos Tziritas, Georgios Theodoropoulos, Maria Koziri, Thanasis Loukopoulos, Samee Khan, “Graph-based Approaches for the Interval Scheduling Problem”, IEEE 26th International Conference on Parallel and Distributed Systems (ICPADS),  Big Data Systems,  2-4 December 2020, Hong Kong
  • Panagiotis Oikonomou,  Kostas Kolomvatsos, Nikos Tziritas, Georgios Theodoropoulos, Georgios Stamoulis, “Uncertainty Driven Workflow Scheduling Using Unreliable Cloud Resources”,   19th IEEE International Symposium on Network Computing and Applications (NCA2020), 24-27 November 2020, Boston USA
  • Stephen Bonner, Amir Atapour-Abarghouei, Phillip Jackson, John Brennan, Ibad Kureshi, Georgios Theodoropoulos, Andrew Stephen McGough, and Boguslaw Obara, “Temporal Neighbourhood Aggregation: Predicting Future Links in Temporal Graphs via Recurrent Variational Graph Convolutions”, IEEE International Conference on Big Data (IEEE BigData 2019), Deep Graph Learning: Methodologies and Applications Workshop (DGLMA),  Los Angeles, USA, Dec 9-12, 2019, DOI Bookmark: 10.1109/BigData47090.2019.9005545
  • Masatoshi Hanai, Toyotaro Suzumura, Wen Jun Tan, Elvis Liu, Georgios Theodoropoulos, Wentong Cai, “Distributed Edge Partitioning for Trillion edge Graphs”, Proceedings of the VLDB Endowment, Vol 12, Volume 12, No. 13, September 2019,  pp. 2379 - 2392 DOI Bookmark : 10.14778/3358701.3358706
  • Stephen Bonner, Ibad Kureshi, John Brennan, Georgios Theodoropoulos, Andrew Stephen McGough, Boguslaw Obara “Exploring the Semantic Content of Unsupervised Graph Embeddings: An Empirical Study”, Data Science and Engineering, June 2019. Springer. DOI Bookmark: 10.1007/s41019-019-0097-5
  • S. Bonner, J. Brennan, I. Kureshi, G. Theodoropoulos, S. McGough, and B. Obara,  “Temporal Graph Offset Reconstruction: Towards Temporally Robust Graph Representation Learning”, 2018 IEEE International Conference on Big Data (IEEE BigData 2018), Seattle, WA, USA, Dec 10-13, 2018.   DOI Bookmark: 10.1109/BigData.2018.8622636
  • Long Cheng, John Murphy, Qingzhi Liu, Chunliang Hao and Georgios Theodoropoulos, “Minimizing Network Traffic for Distributed Joins Using Lightweight Locality-Aware Scheduling”, 24th International European Conference on Parallel and Distributed Computing (Euro-Par 2018) Turin Italy. 27-31 August 2018, Lecture Notes in Computer Science (LNCS, volume 11014), pp 293-305, DOI Bookmark: 10.1007/978-3-319-96983-1_21
  • Stephen Bonner, John Brennan, Ibad Kureshi, Georgios Theodoropoulos, Boguslaw Obara, Stephen McGough “Evaluating the Quality of Graph Embeddings via Topological Feature Reconstruction”, Proceedings of the IEEE BigData 2017, Big Social Media Data Management and Analysis Session, Dec. 11-14, 2017, Boston, MA, USA. DOI Bookmark: 10.1109/BigData.2017.8258232
  • Stephen Bonner, John Brennan, Georgios Theodoropoulos, Ibad Kureshi, Stephen McGough, “GFP-X: A Parallel Approach To Massive Graph Comparison Using Spark”, 3rd International Workshop on High Performance Big Graph Data Management, Analysis, and Mining (BigGraphs 2016), in conjunction with the 2016 IEEE International Conference on Big Data (IEEE BigData 2016), December 5, 2016, Hyatt Regency Washington on Capitol Hill, Washington, D.C., USA. DOI Bookmark: 10.1109/BigData.2016.7840989
  • Stephen Bonner, John Brennan, Georgios Theodoropoulos, Ibad Kureshi, Stephen McGough, “Deep Topology Classification: A New Approach for Massive Graph Classification”, 3rd International Workshop on High Performance Big Graph Data Management, Analysis, and Mining (BigGraphs 2016), in conjunction with the 2016 IEEE International Conference on Big Data (IEEE BigData 2016), December 5, 2016, Hyatt Regency Washington on Capitol Hill, Washington, D.C., USA. DOI Bookmark: 10.1109/BigData.2016.7840988
  • Stephen Bonner, John Brennan, Georgios Theodoropoulos, Stephen McGough and Ibad Kureshi, “Efficient Comparison of Massive Graphs Through the Use of ‘Graph Fingerprints”, 12th International Workshop on Mining and Learning with Graphs, in conjunction with KDD'16, Aug 14, 2016 - San Francisco, CA
  • Stephen Bonner, Ibad Kureshi, John Brennan, Georgios Theodoropoulos, Stephen McGough, Laura Moss, David Corsar, Grigoris Antoniou, “Data Quality Assessment and Anomaly Detection Via Map/Reduce and Linked Data: A Case Study in the Medical Domain”,   2015 IEEE International Conference on Big Data (Big Data 2015), Oct 29-Nov 1 2015, Santa Clara, CA, USA. DOI Bookmark: 10.1109/BigData.2015.7363818
  • Long Cheng, Avinash Malik, Spyros Kotoulas, Tomas Ward, Georgios Theodoropoulos, “Fast Compression of Large Semantic Web Data using X10” IEEE Transactions of Parallel and Distributed Systems Page: 2603 – 2617, 30 October 2015, DOI bookmark: 10.1109/TPDS.2015.2496579
  • Long Cheng, Spyros Kotoulas, Tomas Ward, Georgios Theodoropoulos, “High throughput indexing for large-scale semantic web data”, Proceedings of 30th  Annual ACM Symposium on Applied Computing (SAC 2015), Semantic Web and Applications (SWA), Salamanca, Spain, April 13-17, 2015, Pages 416-422,  DOI Bookmark: 10.1145/2695664.2695920
  • Long Cheng, Spyros Kotoulas, Tomas Ward, Georgios Theodoropoulos, “Robust and Skew-resistant Parallel Joins in Shared-Nothing Systems”, Proceedings of the 23rd  ACM International Conference on Conference on Information and Knowledge Management, (CIKM 2014), Pages 1399-1408,  Nov 3-7, 2014, Shanghai, China, DOI Bookmark:10.1145/2661829.2661888
  • Long Cheng, Spyros Kotoulas, Tomas Ward, Georgios Theodoropoulos, “Design and Evaluation of Parallel Hashing over Large-scale Data”, 21st IEEE International Conference on High Performance Computing  (HiPC 2014), 17-20 December 2014, Hotel Cidade De Goa, Goa, India, DOI Bookmark: 10.1109/HiPC.2014.7116909
  • Long Cheng, Spyros Kotoulas, Tomas Ward, Georgios Theodoropoulos, "A Fully Parallel Framework for Analyzing RDF Data",  13th  International Semantic Web Conference (ISWC 2014), CEUR Workshop Proceedings  Vol-1272, Riva del Garda, Trentino, Italy, 19-23 October 2014.
  • Long Cheng, Avinash Malik, Spyros Kotoulas, Tomas E Ward, Georgios Theodoropoulos, “Efficient Parallel Dictionary Encoding For RDF Data”, 17th International Workshop on the Web and Databases (WebDB 2014), co-located with ACM SIGMOD 2014 International Conference on Management of Data),  Snowbird, Utah, USA,  June 22, 2014. Snowbird, Utah, USA
  • Long Cheng, Spyros Kotoulas, Tomas Ward, Georgios Theodoropoulos, “A two-tier index architecture for fast processing large RDF data over distributed memory”, Hypertext 2014 (HT’14), the 25th ACM Conference on Hypertext and Social Media, Pages 300-302, 1–4 Sep 2014, Santiago, Chile. DOI Bookmark: 10.1145/2631775.2631789
  • Long Cheng, Spyros Kotoulas, Tomas Ward, Georgios Theodoropoulos, “Robust and efficient large-large table outer joins on distributed infrastructures”, Euro-Par'2014, 20th European International Conference on Parallel Processing, Porto, Portugal. 25-29 August 2014, Lecture Notes in Computer Science Volume 8632, 2014, pp 258-269. DOI Bookmark: 10.1007/978-3-319-09873-9_22
  • Long Cheng, Spyros Kotoulas, Tomas Ward, Georgios Theodoropoulos. “Efficient handling skew in outer joins on distributed systems”, CCGrid2014, the 14th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing,  May 26-29, 2014, Chicago, Illinois, USA.  DOI Bookmark: 10.1109/CCGrid.2014.35
  • Sameera Abar, Pierre Lemarinier, Georgios Theodoropoulos, Gregory O’Hare, “Automated Dynamic Resource Provisioning and Monitoring in Virtualized Large-scale Datacenter”, The 28th IEEE International Conference on Advanced Information Networking and Applications (AINA-2014), Victoria, Canada, May 13-16, 2014. DOI Bookmark: 10.1109/AINA.2014.117
  • Long Cheng, Spyros Kotoulas, Tomas Ward, Georgios Theodoropoulos, "A Novel Framework for Handling Skew in Parallel Join Processing on Distributed Memory", 2013 IEEE International Conference on High Performance Computing and Communications (HPCC 2013), 13-15 November 2013 in Zhangjiajie, Hunan Province, P. R. China. DOI Bookmark: 10.1109/ICCSE.2012.19
  • Diego Lugones, Kostas Katrinis, Georgios Theodoropoulos, Martin Collier, "A Reconfigurable, Regular-topology Cluster/Datacenter Network using commodity Optical Switches",  Future Generation Computer Systems, Elsevier, Special Issue on “Extreme Scale Parallel Architectures and Systems”. DOI Bookmark: 10.1016/j.future.2013.04.016
  • Tao Chen, Rami Bahsoon, Georgios Theodoropoulos, "Dynamic Data-Driven Architecture for Adaptive QoS Optimization in the Cloud", International Conference on Computational Science, ICCS 2013 Barcelona, Spain, June 5 - June 7, 2013. DOI bookmark: 10.1016/j.procs.2013.05.357
  • Long Cheng, Spyros Kotoulas, Tomas Ward and Georgios Theodoropoulos,  "Runtime Characterization of Triple Stores", 15th IEEE International conference on Computational Science and Engineering (CSE 2012), 5-7 December 2012, Paphos, Cyprus, DOI bookmark:   10.1109/ICCSE.2012.19
  • Diego Lugones, Kostas Katrinis, Martin Collier and Georgios Theodoropoulos, “Parallel Simulation Models for the Evaluation of Future Large-Scale Datacenter Networks”, 16th IEEE International Symposium on Distributed Simulation and Real Time Applications (DS-RT'12), October 2012, Dublin, Ireland. ISBN: 978-0-7695-4846-3 DOI bookmark: 10.1109/DS-RT.2012.19
  • Long Cheng, Spyros Kotoulas,Tomas Ward, Georgios Theodoropoulos, “Runtime Characterisation of Triple Stores: An Initial Investigation”, 23nd IET Irish Signals and Systems Conference, 28th - 29th June 2012, NUI Maynooth, Ireland
  • Qi Liu, Georgios Theodoropoulos, Dilma Da Silva, Elvis Liu, “Towards an Agent-Based Symbiotic Architecture for Autonomic Management of Virtualized Data Centres”,   INFORMS Winter Simulation Conference, December 2012, Germany. DOI bookmark: 10.1109/WSC.2012.6465318
  • Funmilade Faniyia, Rami Bahsoon, Georgios Theodoropoulos , “A Dynamic Data-Driven Simulation Approach for Preventing SLA Violations in Cloud Federation”, International Conference on Computational Science 2012 (ICCS 2012),  Data Driven Application Systems – (DDDAS 2012), Omaha, Nebraska, 4-6 June, 2012. DOI bookmark: 10.1016/j.procs.2012.04.126
  • Richard Price, Peter Tino, Georgios Theodoropoulos, "Still Alive: Extending Keep-Alive Intervals in P2P Overlay Networks", the "Mobile Networks and Applications" Journal, Springer, May 2011. DOI Bookmark: 10.1007/s11036-011-0317-3
  • Tien Tuan Anh Dinh, Georgios Theodoropoulos, Rob Minson, “Evaluating large scale distributed simulation of  p2p networks”, 12th IEEE International Symposium on Distributed Simulation and Real Time Applications (DS-RT 2008) October 2008, Vancouver, Canada, Pages: 51-58, ISBN ~ ISSN:1550-6525, 978-0-7695-3425-1, DOI Bookmark: 10.1109/DS-RT.2008.36
  • Richard Price, Tien Tuan Anh Dinh and Georgios Theodoropoulos,  “Analysis of a Self-Organizing Maintenance Algorithm Under Constant Churn”,  The Third International Workshop on Dependable and Sustainable Peer-to-Peer Systems (DAS-P2P 2008), in Proceedings of the 2008 International Symposium on Applications and the Internet (SAINT2008), Turku, Finland, July 28 - Aug. 1, 2008, Pages: 209-212, ISBN:978-0-7695-3297-4, DOI Bookmark: 10.1109/SAINT.2008.65
  • Pipis, A., Theodoropoulos, G., Stefanidakis, M., Lioupis, D., "Efficient Modelling and Simulation of a Virtually Shared Memory Parallel Architecture", Proceedings of the 3rd International Congress of the EUROpean SIMulation Societies (Eurosim'98), Helsinki University of Technology, Espo, Helsinki, Finland 14-17 April, 1998, editor: K. Juslin, The Federation of European Simulation Societies, ISBN 952-90-9886-3. Volume 1, Pages: 58-65
  • Milios, S., Theodoropoulos, G., Lioupis, D., "Efficient On Line Trace Driven Simulation of Parallel Computer Architectures", Proceedings of the European Simulation Symposium 1997, University of Passau, Passau, Germany, October 19-22, 1997. SCS International, ISBN 1-56555-125-7, Editors: W. Hahn, A. Lehmann. Pages: 562-566