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I joined the Department of Informatics of the Athens University of Economics and Business in February 2018. My research interests lie in the area of decentralized self-organization for very large scale distributed systems, with a focus on gossiping (also known as epidemic) protocols and wireless sensor network. More recently I am working on blockchain technology.
More information can be found in my CV in english and in greek.
Epidemic-Based Self-Organization in Peer-to-Peer Systems
Spyros Voulgaris
Vrije Universiteit, Amsterdam, The Netherlands, 2006
Decentralized Authorization in Constrained IoT Environments exploiting Interledger Mechanisms
Vasilios A. Siris, Dimitrios Dimopoulos, Nikos Fotiou, Spyros Voulgaris, George C. Polyzos
Elsevier Computer Communications, 2020
Blockchain Technology for Intelligent Environments
Spyros Voulgaris, Nikos Fotiou, Vasilios A. Siris, George C. Polyzos, Mikael Jaatinen, Yannis Oikonomidis
MDPI Future Internet, vol. 11(10), Oct 2019
Interledger Approaches
Vasilios A. Siris, Pekka Nikander, Spyros Voulgaris, Nikos Fotiou, Dmitrij Lagutin, George C. Polyzos
IEEE Access, vol. 7:89948--89966, Jul 2019
Dietcoin: Hardening Bitcoin Transaction Verification Process for Mobile Devices
Davide Frey, Marc X. Makkes, Pierre-Louis Roman, François Taiani, Spyros Voulgaris
ACM Proceedings of the VLDB Endowment, vol. 12(12):1946--1949, Aug 2018
Decentralized Network-level Synchronization in Mobile Ad Hoc Networks
Spyros Voulgaris, Matthew Dobson, Maarten van Steen
ACM Transactions on Sensor Networks, vol. 12(5):1--42, Mar 2016
Decentralized Group Formation
Anna Chmielowiec, Spyros Voulgaris, Maarten van Steen
Springer Journal of Internet Services and Applications, 2014
GDCluster: A General Decentralized Clustering Algorithm
Hoda Mashayekhi, Tania Khalafbeigi, Jafar Habibi, Spyros Voulgaris, Maarten van Steen
IEEE Transactions on Knowledge and Data Engineering, 2015
Exploring Design Tradeoffs Of A Distributed Algorithm For Cosmic Ray Event Detection
Suhail Yousaf, Rena Bakhshi, Maarten van Steen, Spyros Voulgaris, John L. Kelley
IOP Journal of Instrumentation, vol. 8, Mar 2013
GoSCAN: Decentralized scalable data clustering
Hoda Mashayekhi, Jafar Habibi, Spyros Voulgaris, Maarten van Steen
Springer Computing, 2012
Challenges in very large distributed systems
Maarten van Steen, Guillaume Pierre, Spyros Voulgaris
Springer Journal of Internet Services and Applications, vol. 3(1), 2012
PULP: an Adaptive Gossip-Based Dissemination Protocol for Multi-Source Message Streams
Pascal Felber, Anne-Marie Kermarrec, Lorenzo Leonini, Étienne Rivière, Spyros Voulgaris
Springer Peer-to-Peer Networking and Applications, vol. 5(1):74--91, 2011
Gossip-based Networking for Internet-Scale Distributed Systems
Étienne Rivière, Spyros Voulgaris
Springer Lecture Notes in Business Information Processing, vol. 78(8):253--284, 2011
Gossiping on MANETs: the Beauty and the Beast
Roy Friedman, Daniela Gavidia, Luis Rodrigues, Aline Carneiro Viana, Spyros Voulgaris
ACM SIGOPS Operating Systems Review, vol. 41(5):67--74, Oct 2007
Gossip-based Peer Sampling
Márk Jelasity, Spyros Voulgaris, Rachid Guerraoui, Anne-Marie Kermarrec, Maarten van Steen
ACM Transactions on Computer Systems, vol. 25(3):8, Aug 2007
Proactive gossip-based management of semantic overlay networks
Spyros Voulgaris, Maarten van Steen, Konrad Iwanicki
Wiley Concurrency and Computation: Practice & Experience, vol. 19(17):2299--2311, Dec 2007
CYCLON: Inexpensive Membership Management for Unstructured P2P Overlays
Spyros Voulgaris, Daniela Gavidia, Maarten van Steen
Springer Journal of Network and Systems Management, vol. 13(2):197--217, Jun 2005
Transparent Data Relocation in Highly Available Distributed Systems
Spyros Voulgaris, Maarten van Steen, Aline Baggio, Gerco Ballintijn
Studia Informatica Universalis, vol. 3(1):1--18, 2004
Peer Clustering for the InterPlanetary File System
Yannis Thomas, Nikos Fotiou, Iakovos Pittaras, George Xylomenos, Spyros Voulgaris, George Polyzos
2nd ACM SIGCOMM Workshop on Future of Internet Routing & Addressing (FIRA 2023), New York, NY, USA, Sep 10, 2023
SecureCyclon: Dependable Peer Sampling
Alexandros Antonov, Spyros Voulgaris
2nd IEEE International Conference on Distributed Computing Systems (ICDCS 2023), Hong Kong, China, Jul 18-21, 2023
CougaR: Fast and Eclipse-Resilient Dissemination for Blockchain Networks
Evangelos Kolyvas, Spyros Voulgaris
ACM International Conference on Distributed Event-Based Systems (DEBS 2022), Copenhagen, Denmark, Jun 27-30, 2022
OAuth 2.0 Authorization Using Blockchain-based Tokens
Nikos Fotiou, Iakovos Pittaras, Vasilios A. Siris, Spyros Voulgaris, George C. Polyzos
Workshop on Decentralized IoT Systems and Security (DISS 2020), San Diego, CA, USA, Feb 23, 2020
Hierarchical Blockchain Topologies for Quality Control in Food Supply Chains
Spyros Voulgaris, Nikos Fotiou, Vasilios A. Siris, George C. Polyzos, Artemios Tomaras, Sotiris Karachontzitis
29th European Conference on Networks and Communications (EUCNC 2020), Dubrovnik, Croatia, Jun 15-18, 2020
Trusted D2D-based IoT Resource Access using Smart Contracts
Vasilios A. Siris, Dimitrios Dimopoulos, Nikos Fotiou, Spyros Voulgaris, George C. Polyzos
20th IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks (WOWMOM 2019), Washington, DC, USA, Jun 09-12, 2019
Secure IoT Access at Scale using Blockchains and Smart Contracts
Nikos Fotiou, Iakovos Pittaras, Vasilios A. Siris, Spyros Voulgaris, George C. Polyzos
8th IEEE Internet of Things: Smart Objects and Services (IOT-SOS 2019), Washington, DC, USA, Jun 10-12, 2019
IoT Resource Access utilizing Blockchains and Trusted Execution Environments
Vasilios A. Siris, Dimitrios Dimopoulos, Nikos Fotiou, Spyros Voulgaris, George C. Polyzos
Global IoT Summit (GIoTS 2019), Aarhus, Denmark, Jun 17-21, 2019
OAuth 2.0 meets Blockchain for Authorization in Constrained IoT Environments
Vasilios A. Siris, Dimitrios Dimopoulos, Nikos Fotiou, Spyros Voulgaris, George C. Polyzos
5th IEEE World Forum on Internet of Things (WF-IoT 2019), Limerick, Ireland, Apr 15-18, 2019
Interledger Smart Contracts for Decentralized Authorization to Constrained Things
Vasilios A. Siris, Dimitrios Dimopoulos, Nikos Fotiou, Spyros Voulgaris, George C. Polyzos
2nd Workshop on Cryptocurrencies and Blockchains for Distributed Systems (CRYBLOCK 2019), Paris, France, Apr 29, 2019
Bridging the Cyber and Physical Worlds using Blockchains and Smart Contracts
Nikos Fotiou, Vasilios A. Siris, Spyros Voulgaris, George C. Polyzos, Dmitrij Lagutin
Workshop on Decentralized IoT Systems and Security (DISS 2019), San Diego, CA, USA, Feb 24, 2019
SAFETHINGS: Data Security by Design in the IoT
Manuel Barbosa, Sonia Ben Mokhtar, Pascal Felber, Francisco Maia, Miguel Matos, Rui Oliveira, Etienne Rivière, Valerio Schiavoni, Spyros Voulgaris
13th European Dependable Computing Conference (EDCC 2017), Geneva, Switzerland, Sep 04-08, 2017
Bringing secure Bitcoin transactions to your smartphone
Davide Frey, Marc X. Makkes, Pierre-Louis Roman, François Taiani, Spyros Voulgaris
15th ACM/IFIP/USENIX International Workshop on Adaptive and Reflective Middleware (ARM 2016), p. 3:1--3:6, Trento, Italy, Dec 13, 2016
Powerful and Efficient Bulk Shortest-Path Queries: Cypher language extension & Giraph implementation
Peter Rutgers, Claudio Martella, Spyros Voulgaris, Peter Boncz
Graph Data-management Experiences & Systems (GRADES 2016), Oracle Headquarters, Redwood Shores, CA, USA
Dynamic Resource Allocation Using Performance Forecasting
Paulo Moura, Fabio Kon, Spyros Voulgaris, Maarten van Steen
14th ACM/IFIP/USENIX International Conference on High Performance Computing & Simulation (HPCS 2016), Innsbruck, Austria, Jun 18-22, 2016
Using Performance Forecasting to Accelerate Elasticity
Paulo Moura, Fabio Kon, Spyros Voulgaris, Maarten van Steen
2nd Springer Adaptive Resource Management and Scheduling for Cloud Computing (ARMS-CC 2015), p. 17--31, Donostia-San Sebastián, Spain
PeerMatcher: Decentralized Partnership Formation
Nicolae Vladimir Bozdog, Spyros Voulgaris, Henri Bal, Aart van Halteren
9th IEEE International Conference on Self-Adaptive and Self-Organizing Systems (SASO 2015), Cambridge, MA, USA, Sep 21-25, 2015
DEBS Grand Challenge: Pimp my Taxi Ride
Aimylos Galeos, Prokopis Gryllos, Nikolaos Leventis, Konstantinos Mavrikis, Spyros Voulgaris
9th ACM International Conference on Distributed Event-Based Systems (DEBS 2015), p. 318--319, Oslo, Norway, Jun 29 - Jul 03, 2015
Winners of the DEBS Grand Challenge 2015!
AJIRA: A Lightweight Distributed Middleware for MapReduce and Stream Processing
Jacopo Urbani, Alessandro Margara, Ceriel Jacobs, Spyros Voulgaris, Henri Bal
34th IEEE International Conference on Distributed Computing Systems (ICDCS 2014), p. 545--554, Madrid, Spain, Jun 30 - Jul 03, 2014
VICINITY: A Pinch of Randomness Brings out the Structure
Spyros Voulgaris, Maarten van Steen
14th ACM/IFIP/USENIX International Middleware Conference (Middleware 2013), p. 21--40, Beijing, China, Dec 09-13, 2013
Strategies for Generating and Evaluating Large-Scale Powerlaw-distributed P2P Overlays
Ana-Maria Oprescu, Spyros Voulgaris, Haralambie Leahu
13th IFIP International Conference on Distributed Applications and Interoperable Systems (DAIS 2013), p. , Florence, Italy, Jun 03-05, 2013
PolderCast: Fast, Robust, and Scalable Architecture for P2P Topic-based Pub/Sub
Vinay Setty, Maarten van Steen, Roman Vitenberg, Spyros Voulgaris
13th ACM/IFIP/USENIX International Middleware Conference (Middleware 2012), p. , Montreal, Canada, Dec 03-07, 2012
BooSTER: Broadcast Stream Transmission Epidemic Repair
Spyros Voulgaris, Aaron Harwood
12th IEEE International Conference on Peer-to-Peer Computing (P2P 2012), p. , Tarragona, Spain, Sep 03-05, 2012
Revisiting Gossip-based Ad-Hoc Routing
Albana Gaba, Spyros Voulgaris, Konrad Iwanicki, Maarten van Steen
6th IEEE International Workshop on Wireless Mesh and Ad Hoc Networks (WiMAN 2012), p. , Munich, Germany, Jul 30, 2012
Cooperative Repair of Wireless Broadcasts
Aaron Harwood, Spyros Voulgaris, Maarten van Steen
11th IFIP International Conference on Distributed Applications and Interoperable Systems (DAIS 2011), p. 243-248, Reykjavik, Iceland, Jun 27-30, 2011
Merging Ultra-low Duty Cycle Networks
Matthew Dobson, Spyros Voulgaris, Maarten van Steen
41st IEEE/IFIP International Conference on Dependable Systems and Networks (DSN 2011), p. 538--549, Hong Kong, China, Jun 27-30, 2011
Network-level Synchronization in Decentralized Social Ad-Hoc Networks
Matthew Dobson, Spyros Voulgaris, Maarten van Steen
5th International Conference on Pervasive Computing and Applications (ICPCA 2010), Maribor, Slovenia, Dec 01-03, 2010
Towards Congestion-Aware All-to-All Information Dissemination in Mobile Ad-Hoc Networks
Albana Gaba, Spyros Voulgaris, Maarten van Steen
IEEE GLOBECOM Workshop on Ubiquitous Computing and Networks (UbiCoNet 2010), Miami, FL, USA, Dec 10, 2010
Group Monitoring in Mobile Ad-Hoc Networks
Albana Gaba, Spyros Voulgaris, Maarten van Steen
3rd International Conference on e-Democracy (eDemocracy 2009), p. 441--451, Athens, Greece, Sep 23-25, 2009
Hybrid Dissemination: Adding Determinism to Probabilistic Multicasting in Large-Scale P2P Systems
Spyros Voulgaris, Maarten van Steen
8th ACM/IFIP/USENIX International Middleware Conference (Middleware 2007), p. 389--409, Newport Beach, CA, USA, Nov 26-30, 2007
Performance Analysis of Cyclon, an Inexpensive Membership Management for Unstructured P2P Overlays
François Bonnet, Frédéric Tronel, Spyros Voulgaris
20th International Symposium on Distributed Computing (DISC 2006), p. 560--562, Stockholm, Sweden, Sep 18-20, 2006
Gossip-Based Clock Synchronization for Large Decentralized Systems
Konrad Iwanicki, Maarten van Steen, Spyros Voulgaris
2nd IEEE International Workshop on Self-Managed Networks, Systems & Services (SelfMan 2006), p. 28--42, Dublin, Ireland, Jun 16, 2006
Sub-2-Sub: Self-Organizing Content-Based Publish Subscribe for Dynamic Large Scale Collaborative Networks
Spyros Voulgaris, Étienne Rivière, Anne-Marie Kermarrec, Maarten van Steen
5th International Workshop on Peer-to-Peer Systems (IPTPS 2006), Santa Barbara, CA, USA, Feb 27-28, 2006
A Gossip-based Distributed News Service for Wireless Mesh Networks
Daniela Gavidia, Spyros Voulgaris, Maarten van Steen
3rd IFIP International Conference on Wireless On-demand Network Systems and Services (WONS 2006), p. 59--67, Les Ménuires, France, Jan 18-20, 2006
Epidemic-style Management of Semantic Overlays for Content-Based Searching
Spyros Voulgaris, Maarten van Steen
European Conference on Parallel and Distributed Computing (EuroPar 2005), p. 1143--1152, Lisbon, Portugal, Aug 31 - Sep 02, 2005
Self-made Systems
Maarten van Steen, Spyros Voulgaris, Elth Ogston, Frances Brazier
Self-Star Properties in Complex Information Systems (SelfStar 2004), Bertinoro, Italy, May 31 - Jun 02, 2004
Exploiting Semantic Proximity in Peer-to-Peer Content Searching
Spyros Voulgaris, Anne-Marie Kermarrec, Laurent Massoulié, Maarten van Steen
10th IEEE International Workshop on Future Trends in Distributed Computing Systems (FTDCS 2004), p. 238--243, Suzhu, China, May 26-28, 2004
An Epidemic Protocol for Managing Routing Tables in very large Peer-to-Peer Networks
Spyros Voulgaris, Maarten van Steen
14th IFIP/IEEE Distributed Systems, Operations and Management (DSOM 2003), p. 41--54, Heidelberg, Germany, Oct 20-22, 2003
A Robust and Scalable Peer-to-Peer Gossiping Protocol
Spyros Voulgaris, Márk Jelasity, Maarten van Steen
2nd International Workshop on Agents and Peer-to-Peer Computing (AP2PC 2003), Melbourne, Australia, Jul 14, 2003
Transparent Data Relocation in Highly Available Distributed Systems
Spyros Voulgaris, Maarten van Steen, Aline Baggio, Gerco Ballintijn
6th International Conference On Principles Of Distributed Systems (OPODIS 2002), p. 9--16, Reims, France, Dec 11-13, 2002
Transparent Server Shutdown in a Wide-Area Location Service
Spyros Voulgaris, Maarten van Steen, Aline Baggio, Gerco Ballintijn
Advanced School of Computing and Imaging (ASCI 2002), Lochem, The Netherlands, Jun 19-21, 2002
Yield - Performance Tradeoffs for VLSI Processors with Partially Good Two-Level On-Chip Caches
Dimitris Nikolos, Haridimos Vergos, Antonis Vazaios, Spyros Voulgaris
IEEE Workshop on Defect and Fault-Tolerance in VLSI Systems (DFT 1996), p. 41--54, Boston, MA, USA, Nov 06-08, 1996