Distributed Federated Deep Learning in Clustered Internet of Things Wireless Networks with Data Similarity-based Client Participation
IEEE Internet Computing magazine, to appear, 2024.

Misconduct, Mishaps, and Misranking in Bibliometric Databases: Inflating the Production and Impact of Scientists
Computers (MDPI), vol. 13, no. 11, editorial, 2024.

A Joint Survey in Decentralized Federated Learning and TinyML: A Brief Introduction to Swarm Learning
Future Internet journal (MDPI), vol. 16, no. 11, 2024.

Model Reduction of Feed Forward Neural Networks for Resource-Constrained Devices
Applied Intelligence (Springer), vol. 53, pp. 14102-14127, 2023.
IF of neural networks journals.

Multilayer Backbones for Internet of Battlefield Things
Future Internet journal (MDPI), vol. 14, no. 6, art. 186, 2022.

When Universities Rise (Rank) High into the Skyline
COLLNET Journal of Scientometrics and Information Management (Taylor & Francis), vol. 15, no. 2, pp. 241-258, December, 2021.

Identifying Influential Spreaders in Complex Multilayer Networks: A Centrality Perspective
IEEE Transactions on Network Science and Engineering, vol. 6, no. 1, pp. 31-45, January-March, 2019.

Distributed Algorithms for Multi-layer Connected Edge Dominating Sets
IEEE Control Systems Letters, vol. 3, no. 1, pp. 31-36, January, 2019.

Energy-Aware Backbone Formation in Military Multilayer Ad Hoc Networks
Ad Hoc Networks (Elsevier), vol. 81, pp. 17-44, December, 2018.

Rainbow Ranking: An Adaptable, Multidimensional Ranking Method for Publication Sets
Scientometrics (Springer), vol. 116, no. 1, pp. 147-160, July, 2018,

Hadoop MapReduce Performance on SSDs for Analyzing Social Networks
Big Data Research (Elsevier), vol. 11, pp. 1-10, March, 2018.

The Fractal Dimension of a Citation Curve: Quantifying an Individual's Scientific Output Using the Geometry of the Entire Curve
Scientometrics (Springer), vol. 111, no. 3, pp. 1751-1774, June, 2017.

Gazing at the Skyline for Star Scientists
Journal of Informetrics (Elsevier), vol. 10, no. 3, pp. 789-813, August, 2016.

Social Clustering of Vehicles based on Semi-Markov Processes
IEEE Transactions on Vehicular Technology, vol. 65, no. 1, pp. 318-332, January, 2016.

Ranking and Identifying Influential Scientists versus Mass Producers by the Perfectionism Index
Scientometrics (Springer), vol. 103, no. 1, pp. 1-31, April, 2015.

A Simulation-based Performance Evaluation of a Randomized MIS-based Clustering Algorithm for Ad Hoc Networks
Simulation Modelling: Practice And Theory (Elsevier), vol. 48, pp. 1-23, November, 2014.

Delay Efficient Backpressure Routing in Wireless Ad Hoc Networks
EAI Transactions on Mobile Communications and Applications, vol. 1, no. 4, e5, September, 2014.

Detecting Influential Spreaders in Complex, Dynamic Networks
IEEE Computer magazine, vol. 46, no. 4, pp. 26-31, April, 2013.

Edge Betweenness Centrality: A Novel Algorithm for QoS-based Topology Control over Wireless Sensor Networks
Journal of Network and Computer Applications (Elsevier), vol. 35, no. 4, pp. 1210-1217, July, 2012.

New Measures for Characterizing the Significance of Nodes in Wireless Ad Hoc Networks via Localized Path-based Neighborhood Analysis
Social Network Analysis and Mining (Springer), vol. 2, no. 2, pp. 97-106, June, 2012.

Identifying Attractive Research Fields for New Scientists
Scientometrics (Springer), vol. 91, no. 3, pp. 869-894, June, 2012.

Business Application Acquisition: On-premise or SaaS-based Solutions?
IEEE Software magazine, vol. 29, no. 3, pp. 86-93, May-June 2012.

Improved Retrieval Effectiveness by Efficient Combination of Term Proximity and Zone Scoring: A Simulation-based Evaluation
Simulation Modelling: Practice And Theory (Elsevier), vol. 22, no. 3, pp. 74-91, March, 2012.

Storage Planning and Replica Assignment in Content-Centric Publish/Subscribe Networks
Computer Networks (Elsevier), vol. 58, no. 18, pp. 4021-4032, December, 2011.

Identifying the Productive and Influential Bloggers in a Community
IEEE Transactions on Systems, Man, and Cybernetics-Part C: Applications and Reviews, vol. 41, no. 5, pp. 759-764, September, 2011.
A relevant video is available.

High Performance, Low Complexity Cooperative Caching for Wireless Sensor Networks
ACM Wireless Networks, vol. 17, no. 3, pp. 717-737, April, 2011.

Architectural Requirements for Cloud Computing Systems: An Enterprise Cloud Approach
Journal of Grid Computing (Springer), vol. 9, no. 1, pp. 3-26, March, 2011.

Effective Rank Aggregation for Metasearching
Journal of Systems and Software (Elsevier), vol. 84, no. 1, pp. 130-143, January, 2011.
The article described our QuadSearch metasearch engine. An article comparing the performance of Quadsearch, Dogpile, Mamma.

Social Network Analysis Concepts in the Design of Wireless Ad Hoc Network Protocols
IEEE Network magazine, vol. 24, no. 6, pp. 23-29, November/December, 2010.
Slides are available.

CDNSim: A Simulation Tool for Content Distribution Networks
ACM Transactions On Modeling And Computer Simulation, vol. 20, no. 2, article 10, April, 2010.

Energy-Efficient Distributed Clustering in Wireless Sensor Networks
Journal of Parallel and Distributed Computing (Academic Press/Elsevier), vol. 70, no. 4, pp. 371-383, April, 2010.

Cache Consistency in Wireless Multimedia Sensor Networks
Ad Hoc Networks (Elsevier), vol. 8, no. 2, pp. 214-240, March, 2010.

The f index: Quantifying the Impact of Coterminal Citations on Scientists' Ranking
Journal of the American Society for Information Science and Technology (Wiley), vol. 60, no. 5, pp. 1051-1056, May, 2009.

Prediction in Wireless Networks by Markov Chains
IEEE Wireless Communications magazine, vol. 16, no. 2, pp. 56-64, April, 2009.

CDNs Content Outsourcing via Generalized Communities
IEEE Transactions on Knowledge and Data Engineering, vol. 21, no. 1, pp. 137-151, January, 2009.

Cooperative Caching in Wireless Multimedia Sensor Networks
ACM Mobile Networks and Applications, vol. 13, no. 3-4, pp. 337-356, August, 2008.

Music Retrieval over Wireless Ad-hoc Networks
IEEE Transactions on Audio, Speech and Language Processing, vol. 16, no. 6, pp. 152-162, August, 2008.

Prefetching in Content Distribution Networks via Web Communities Identification and Outsourcing
World Wide Web Journal (Springer), vol. 11, no. 1, pp. 39-70, March, 2008.

Generalized Hirsch h-index for Disclosing Latent Facts in Citation Networks
Scientometrics (Springer), vol. 72, no. 2, pp. 253-280, 2007.

A Data Mining Approach for Location Prediction in Mobile Environments
Data and Knowledge Engineering (Elsevier), vol. 54, no. 2, pp. 121-146, August, 2005.
Slides are available.

Fast Mining of Frequent Tree Structures by Hashing and Indexing
Information and Software Technology (Elsevier), vol. 47, no. 2, pp. 129-140, February, 2005.

Web Caching in Broadcast Mobile Wireless Environments
IEEE Internet Computing magazine, vol. 8, no. 3, pp. 37-45, May/June, 2004.

Broadcast Program Generation for Webcasting
Data and Knowledge Engineering (Elsevier), vol. 49, no. 1, pp. 1-21, April, 2004.

A Data Mining Algorithm for Generalized Web Prefetching
IEEE Transactions on Knowledge and Data Engineering, vol. 15, no. 5, pp. 1155-1169, September/October, 2003
Slides are available.

Guest editorial: Advances in Intelligent Data, Data Engineering, and Information Systems
Computer Science and Information Systems, vol. 20, no. 3, 2023.

Guest Editors' Introduction: Industrial Internet of Things
ACM/Springer Mobile Networks and Applications, vol. 23, no. 4, August, 2018.

Guest Editors' Introduction: Social Media Preservation and Applications
World Wide Web Journal (Springer), vol. 17, no. 4, pp. 691-693, July, 2014.

Guest Editors' Introduction: Cloud Computing
IEEE Network magazine, vol. 25, no. 4, pp. 4-5, July/August, 2011.

Guest Editors' Introduction: Cloud Computing, Distributed Internet Computing for IT and Scientific Research
IEEE Internet Computing magazine, vol. 13, no. 5, pp. 10-13, September/October, 2009.

Greek translation
New-Tech pub, ISBN: 978-960-578-100-2

Original Network Science book.

Wireless Information Highways
IGI-Global, ISBN: 1-59140-568-8.

Book information from Amazon's site.

IEEE/WIC/ACM International Conference on Web Intelligence, WI 2019
Companion Volume, ACM 2019, ISBN 978-1-4503-6988-6, Thessaloniki, Greece, October 14-17, 2019.

Hunting for supernovae articles in the universe of scientometrics
December, 2019.

Impact and Productivity of PhD Graduates of Computer Science/Engineering Departments of Hellenic Universities
July, 2017.

Evaluating Greek Departments of Computer Science & Engineering using Bibliometric Indices
Proceedings of the Panhellenic Conference on Informatics (PCI), Local Proceedings, pp. 83-92, Samos Island, Greece, August 28-30, 2008.
Slides are available.

An abbreviated greek translation of the above article appeared in the Greek Computer Society Newsletter, vol. 114, Jul.-Sep. 2008.

Non-Static TinyML for Ad hoc Networked Devices
chapter in TinyML for Edge Intelligence in IoT and LPWAN Networks (Bharat S Chaudhari, Sheetal N Ghorpade, Marco Zennaro, Rytis Paskauskas, eds.), Elsevier, 2024.

Evaluation of Machine Learning Methods for Fake News Detection
chapter in Combating Fake News with Computational Intelligence Techniques (Mohamed Lahby, Al-Sakib Khan Pathan, Yassine Maleh, Wael Mohamed Shaher Yafooz, eds.), Studies in Computational Intelligence, vol. 1001, Springer, pp. 163-183, 2022.

Scientific Impact Vitality: The Citation Currency Ratio and Citation Currency Exergy Indicators
chapter in Predicting the Dynamics of Research Impact (Yannis Manolopoulos, Thanasis Vergoulis, eds.), Springer-Nature, pp. 209-224, 2021.

Identifying Influential Spreaders in Complex Networks with Probabilistic Links
chapter in Social Networks and Surveillance for Society (Tansel Ozyer, Sambit Bakshi, Reda Alhajj, eds.), Lecture Notes in Social Networks, Springer-Nature, pp. 57-84, 2019.

Detecting Influential Nodes in Complex Networks with Range Probabilistic Control Centrality
chapter in Coordination Control of Distributed Systems (Jan H. van Schuppen and Tiziano Villa, eds.), Lecture Notes in Control and Information Sciences, vol. 456, Springer-Verlag, pp. 265-272, 2015.

Cache Control Issues in Pub-Sub Networks and Wireless Sensor Networks
chapter in Coordination Control of Distributed Systems (Jan H. van Schuppen and Tiziano Villa, eds.), Lecture Notes in Control and Information Sciences, vol. 456, Springer-Verlag, pp. 259-264, 2015.

Layered Backpressure Scheduling for Delay-Aware Routing in Ad Hoc Networks
chapter in Coordination Control of Distributed Systems (Jan H. van Schuppen and Tiziano Villa, eds.), Lecture Notes in Control and Information Sciences, vol. 456, Springer-Verlag, pp. 251-258, 2015.

Content Replication and Delivery in Information-Centric Networks
chapter in Advanced Content Delivery, Streaming, and Cloud Services, (Mukaddim Pathan, Ramesh K. Sitaraman, Dom Robinson, eds.), Wiley, pp. 413-429, 2014.

How to Choose the Right Cloud
chapter in Advanced Design Approaches to Emerging Software Systems: Principles, Methodology and Tools, (Xiaodong Liu and Yang Li, eds.), IGI Global, pp. 219-240, 2011.

Efficiently Maintaining Structural Associations of Semistructured Data
chapter in Lecture Notes in Computer Sciece (LNCS), vol. 2563, Springer-Verlag, pp. 118-132, 2003.

Cache Management for Web-Powered Databases
chapter in Web-Powered Databases, (D. Taniar, W. Rahayou, eds.), IDEA Group Publishing, pp. 201-242, 2002.

Exploiting Web Log Mining for Web Cache Enhancement
chapter in Lecture Notes in Artificial Intelligence (LNAI), vol. 2356, Springer-Verlag, pp. 68-87, 2002.

Distributed Federated Learning in Wireless Ad hoc Networks
Proceedings of the 6th Summit on Gender Equality in Computing (GEC), Nicosia, Cyprus, June 13-14, 2024.
Poster is available.

Do students surpass their mentors?
Workshop for Open Citations and Open Scholarly Metadata (WOOC), Bologna, Italy, October 26-27, 2023.

Transfer Deep Learning for TinyML
Proceedings of the 5th Summit on Gender Equality in Computing (GEC), Athens, Greece, June 26-27, 2023.
Poster is available.

Transfer Learning for Convolutional Neural Networks in Tiny Deep Learning Environments
Proceedings of the Panhellenic Conference on Informatics (PCI), pp. 145-150, November, 2022.
Slides are available.

Memory Reduction and Training Acceleration of Neural Networks for Tiny Machine Learning
Proceedings of the 4th Summit on Gender Equality in Computing (GEC), Thessaloniki, Greece, June 16-17, 2022.
Slides are available.

Feed Forward Neural Network Sparsification with Dynamic Pruning
Proceedings of the Panhellenic Conference on Informatics (PCI), pp. 12-17, [Hybrid conference], Volos, Greece, November 26-28, 2021.
Slides are available.

Sink Group Betweenness Centrality
Proceedings of the 25th International Database Engineering & Applications Symposium (IDEAS), pp. 21-26, [Virtual conference], Montreal, Canada, July 14-16, 2021.
Slides are available.

Backbones for Internet of Battlefield Things
Proceedings of the 16th IEEE/IFIP Annual Conference on Wireless On-demand Network Systems and Services (WONS), pp. 116-123, [Virtual conference], March 9-11, 2021.
Slides are available.
Video is available.

Ranking Universities via Clustering
Proceedings of the 18th International Society of Scientometrics and Informetrics Conference (ISSI), Leuven, Belgium, [Virtual conference], July 12-15, 2021.

Skyline-based University Rankings
Proceedings of the 1st International Workshop on Assessing Impact and Merit in Science (AIMinScience), Lyon, France, August 25, 2020.

Which machine learning paradigm for fake news detection?
Proceedings of the IEEE/WIC/ACM Web Intelligence Conference (WI), pp. 383-387, Thessaloniki, Greece, October, 14-17, 2019.
Slides are available.

Energy-Aware Distributed Edge Domination of Multilayer Networks
Proceedings of the IEEE American Control Conference (ACC), Philadelphia, PA, USA, July 10-12, 2019.

Measuring Science in our Highly Digitized World
Proceedings of the 22nd Panhellenic Conference on Informatics (PCI), pp. 1-3, Athens, Greece, November 29-December 1, 2018.

Distributed Algorithms for Multi-layer Connected Edge Dominating Sets
Proceedings of the 57th IEEE Conference on Decision and Control (CDC), Miami Beach, FL, USA, December 17-19, 2018.
Slides are available.

A Rich Dictionary Markov Predictor for Vehicular Trajectory Forecasting
Proceedings of the 30th IEEE International Conference on Tools with Artificial Intelligence (ICTAI), pp. 556-563, Volos, Greece, November 5-7, 2018.

The Science of Science and a Multilayer Network Approach to Scientists' Ranking
Proceedings of the 22nd International Database Engineering & Applications Symposium (IDEAS) pp. 5-11, Villa San Giovanni, Calabria, Italy, June 18-10, 2018.
Slides are available.

The Rainbow over the Greek Departments of Computer Science/Engineering: A Bibliometric Study
Proceedings of the 21st Panhellenic Conference on Informatics (PCI), Larisa, Greece, September 28-30, 2017.
Slides are available.

A Rainbow at the Skyline after the Storm of Indicators for Ranking Scientists
Proceedings of the 16th International Society of Scientometrics and Informetrics Conference (ISSI), Wuhan, China, October 16-20, 2017.

Feature Models for Big Data Applications
Proceedings of the IEEE International Conference on Information, Intelligence, Systems and Applications (IISA), Larnaca, Cyprus, August 28-30, 2017.

Metrics and Rankings: Myths and Fallacies
Data Analytics and Management in Data Intensive Domains (DAMDID/RCDL), chapter in book, series in Communications in Computer and Information Science, vol. 706, pp. 265-280, 2017.

Backbone Formation in Military Multi-Layer Ad Hoc Networks Using Complex Network Concepts
Proceedings of the 35th IEEE Military Communications Conference (MILCOM), pp. 842-848, Baltimore, Maryland, USA, November 1-3, 2016.
Slides are available.
Photo from MILCOM is available.

Quantifying an individual's scientific output using the fractal dimension of the whole citation curve
Proceedings of the 12th International Conference on Webometrics, Informetrics and Scientometrics and 17th COLLNET Meeting, Nancy, France, December 12-15, 2016.
Slides are available.

Hadoop MapReduce performance on SSDs: The case of complex network analysis tasks
Proceedings of the 2nd Neural Network Society International Conference on BigData (INNS BigData), chapter in Advances in Big Data, series in Advances in Intelligent Systems and Computing, vol. 529, pp. 111-119, Thessaloniki, Greece, October 23-25, 2016.
Slides are available.

A Scientist's Impact over Time: The Predictive Power of Clustering with Peers
Proceedings of the 20th International Database Engineering and Applications Symposium (IDEAS), pp. 334-339, Montreal, QC, Canada, July 11-13, 2016.
Slides are available.

Blocking Epidemics Propagation in Vehicular Networks
Proceedings of the 12th IEEE/IFIP Annual Conference on Wireless On-demand Network Systems and Services (WONS), pp. 65-72, Cortina d'Ampezzo, Italy, January 20-22, 2016.
Slides are available.

A Robust Eco-Routing Protocol Against Malicious Data in Vehicular Networks
Proceedings of the 8th IFIP Wireless and Mobile Networking Conference (WMNC), pp. 184-191, Munich, Germany, October 5-7, 2015.

Bibliometric Indices for the Assessment of the Citation Curve Tail"
Proceedings of the 19th Panhellenic Conference on Informatics (PCI), pp. 305-310, Athens, Greece, October 1-3, 2015.

Dynamically Blocking Contagions in Complex Networks by Cutting Vital Connections
Proceedings of the IEEE International Conference on Communications (IEEE ICC), pp. 1170-1175, London, UK, June 8-12, 2015.

Novel Scientometric Indicators to Characterize an Individual's Scientific Research Output
Proceedings of the 1st International Conference on Recent Trends and Applications in Computer Science and Information Technology (RTA-CSIT), Tirana, Albania, December 12-13, 2014.
Slides are available.

Analyzing Cooperative Lane Change Models for Connected Vehicles
Proceedings of the 3rd International Conference on Connected Vehicles and Expo (ICCVE), pp. 565-570, Vienna, Austria, November 3-7, 2014.

A Social-based Approach for Message Dissemination in Vehicular Ad Hoc Networks
Proceedings of the 6th International Conference on Ad Hoc Networks, Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering (LNICST), vol. 140, Springer, pp. 27-38, Rhodes island, Greece, August 18-19, 2014.
Slides are available.

NITOS Testbed: A Cloud based Wireless Experimentation Facility
Proceedings of the Workshop on Federated Future Internet and Distributed Cloud Testbeds (FIDC), co-located with the 26th IEEE International Teletraffic Congress (ITC), Karlskrona, Sweden, September 9-11, 2014.
Slides are available.

MapReduce-based Distributed K-shell Decomposition for Online Social Networks
Proceedings of the 2nd International Workshop on Personalized Web Tasking (PWT), In the context of the IEEE 10th World Congress on Services, pp. 30-37, Anchorage, Alaska, USA, June 27-July 2, 2014.
Slides are available.

Enabling ITS Real World Experimentation in NITOS Future Internet facility
Proceedings of the 11th IEEE/IFIP Annual Conference on Wireless On-demand Network Systems and Services (WONS), pp. 97-103, Obergurgl, Austria, April 2-4, 2014.
Slides are available.

Exploiting Vehicular Communications for Reducing CO2 Emissions in Urban environments
Proceedings of the 2nd International Conference on Connected Vehicles and Expo (ICCVE), pp. 32-37, Las Vegas, Nevada, USA, December 2-6, 2013.

Clustering in Urban Environments: Virtual Forces Applied to Vehicles
Proceedings of the IEEE Workshop on Emerging Vehicular Networks: V2V/V2I and Railroad Communications (ENV), In conjunction with the IEEE International Conference on Communications (ICC), pp. 494-498, Budapest, Hungary, June 9-13, 2013.
Slides are available.

Enhanced Spring Clustering in VANETs with Obstruction Considerations
Proceedings of the 77th IEEE Vehicular Technology Conference - Spring (VTC-Spring), Dresden, Germany, June 2-5, 2013.
Slides are available.

Detecting Energy-Efficient Central Nodes for Cooperative Caching in Wireless Sensor Networks
Proceedings of the 27th IEEE International Conference on Advanced Information Networking and Applications (AINA), pp. 484-491, Barcelona, Spain, March 25-28, 2013.
Slides are available.

Distributed Clustering in Vehicular Networks
Proceedings of the 2nd International Workshop on Vehicular Communications and Networking (VECON), In conjunction with the 8th IEEE International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob), pp. 601-607, Barcelona, Spain, October 8-10, 2012.
Slides are available.

Demonstration of a Vehicle-to-Infrastructure (V2I) Communication Network featuring Heterogeneous Sensors and Delay Tolerant Network Capabilities
Proceedings of the 8th ICST International Conference on Testbeds and Research Infrastructures for the Development of Networks and Communities (TRIDENTCOM), poster, Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering (LNICST), vol. 44, Springer, pp. 403-405, Thessaloniki, Greece, June 11-13, 2012.

Distributed Skip Air Index for Smart Broadcasting in Intelligent Transportation Systems
Proceedings of the IEEE Intelligent Vehicles Symposium (IV), IEEE Intelligent Transportation Systems Society (ITSS), pp. 624-629, Alcala' de Henares, Madrid, Spain, June 3-7, 2012.
Slides are available.

A-Tree: Distributed Indexing of Multidimensional Data for Cloud Computing Environments
Proceedings of the 3rd IEEE International Conference on Cloud Computing Technology and Science (CloudCom), A-Tree: Distributed Indexing of Multidimensional Data for Cloud Computing Environments

Layered Backpressure Scheduling for Delay Reduction in Ad Hoc Networks
Proceedings of the 12th IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks (WoWMoM), Lucca, Italy, June 20-24, 2011.
Slides are available.

Storing and Replication in Topic-Based Publish/Subscribe Networks
Proceedings of the IEEE Global Communications Conference (GLOBECOM), Miami, Florida, USA, December 6-10, 2010.
Slides are available.

Application Development: Fly to the Clouds or Stay in-House?
Proceedings of the IEEE International Workshop on Collaboration and Cloud Computing, IEEE Press, pp. 60-65, Larisa, Greece, June 28-30, 2010.
Slides are available.

Topology Control Algorithms for Wireless Sensor Networks: A Critical Survey
Proceedings of the International Conference on Computer Systems and Technologies (CompSysTech), ACM Press, pp. 1-10, Sofia, Bulgaria, June 17-18, 2010.

EBC: A Topology Control Algorithm for Achieving High QoS in Sensor Networks
Proceedings of the 6th International ICST Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness (QShine), Lecture Notes of ICST (LNICST), The joint proceedings series of Springer and ICST, vol. 22, pp. 613-626, Las Palmas de Gran Canaria, Canary Islands (Spain), November 23-25, 2009.

On the Structure and Evolution of Vehicular Networks
Proceedings of the 17th IEEE/ACM International Symposium on Modelling, Analysis and Simulation of Computer and Telecommunication Systems (MASCOTS), IEEE Press, pp. 502-511, London, UK, September 21-23, 2009.

Identifying Influential Bloggers: Time Does Matter
Proceedings of the IEEE/WIC/ACM International Conference on Web Intelligence (WI), IEEE Press, pp. 76-83, Milan, Italy, September 15-18, 2009.
Slides are available.

Social Network Analysis and its Applications in Wireless Sensor and Vehicular Networks
Proceedings of the 3rd Conference for the e-Democracy, Lecture Notes of ICST (LNICST), The joint proceedings series of Springer and ICST, vol. 26, pp. 411-420, Athens, Greece, September 23-25, 2009.

New metrics for characterizing the significance of nodes in wireless networks via path-based neighborhood analysis
Proceedings of the Panhellenic Conference on Informatics (PCI), IEEE Press, pp. 143-147, Corfu Island, Greece, September 10-12, 2009.
Slides are available.

Query Sensitive Storage for Wireless Sensor Networks
Proceedings of the Panhellenic Conference on Informatics (PCI), IEEE Press, pp. 25-29, Corfu Island, Greece, September 10-12, 2009.

High Performance, Low Overhead Cooperative Caching for Wireless Sensor Networks
Proceedings of the 10th IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks (WoWMoM), Kos Island, Greece, June 15-19, 2009.
Slides are available.

The d-Hop k-Data Coverage Query Problem in Wireless Sensor Networks
Proceedings of the 5th International Workshop on Data Management for Sensor Networks, (In conjunction with the Very Large Data Bases Conference (VLDB)), ACM Press, pp. 14-20, Auckland, New Zealand, August 24th, 2008.
Slides are available.

Effective Ranking Fusion Methods for Personalized Metasearch Engines
Proceedings of the Panhellenic Conference on Informatics (PCI), IEEE Press, pp. 39-43, Samos Island, Greece, August 28-30, 2008.
Slides are available.

Interpolating the Air for Optimizing Wireless Data Broadcast
Proceedings of the 5th ACM International Workshop on Mobility Management and Wireless Access (MobiWAC), (In conjunction with ACM/IEEE International Symposium on Modeling, Analysis, and Simulation of Wireless and Mobile Systems (MSWiM)), ACM Press, pp. 112-119, Chania, Crete Island, Greece, October 22nd, 2007
Slides are available.

Cooperative Caching in Wireless Multimedia Sensor Networks
Proceedings of the 3rd ICST/ACM International Mobile Multimedia Communications Conference (MobiMedia), ACM Press, pp. 377-382, Nafpaktos, Greece, August 27-29, 2007.
Slides are available.

Age-decaying h-index for Social Networks of Citations
Proceedings of the Workshop on Social Aspects of the Web (SAW), (In conjunction with 10th International Conference on Business Information Systems), pp. 27-43, Poznan, Poland, April 25, 2007.
Slides are available.

Node Clustering in Wireless Sensor Networks by Considering Structural Characteristics of the Network Graph
Proceedings of the 4th IEEE International Conference on Information Technology : New Generations (ITNG), IEEE Press, pp. 122-127, Las Vegas, Nevada, USA, April 2-4, 2007.
Slides are available.

Generalized Indexing for Energy-Efficient Access to Partially Ordered Broadcast Data in Wireless Networks
Proceedings of the 10th IEEE International Database Engineering and Applications Symposium (IDEAS), IEEE Press, pp. 89-96, Delhi, India, December 11-14, 2006.
Slides are available.

Generalized h-index for Revealing Latent Facts in Social Networks of Citations
Proceedings of the 4th ACM International Workshop on Link Analysis: Dynamics and Static of Large Networks (LinkKDD), (In conjunction with ACM KDD), ACM Press, pp. 45-52, Philadelphia, PA, USA, August 20, 2006.
Slides are available.

The Geodesic Broadcast Scheme for Wireless Ad Hoc Networks
Proceedings of the 4th IEEE International Workshop on Mobile Distributed Computing (MDC), (In conjunction with IEEE WoWMoM'06), IEEE Press, pp. 571-575, Niagara-Falls/Buffalo, NY, USA, June 26, 2006.
Slides are available.

Replication based on Objects Load under a Content Distribution Network
Proceedings of the 2nd IEEE International Workshop on Challenges in Web Information Retrieval and Integration (WIRI), (In conjunction with ICDE'06), IEEE Press, Atlanta, Georgia, USA, April 3rd, 2006.
Slides are available.

A Latency-based Object Placement Approach in Content Distribution Networks
Proceedings of the 3rd IEEE Latin American Web Congress (LA-Web), IEEE Press, pp. 140-147, Buenos Aires, Argentina, Oct. 31 - Nov. 2, 2005.
Slides are available.

Content-Based Music Information Retrieval in Wireless Ad-hoc Networks
Proceedings of the 6th International Symposium on Music Information Retrieval (ISMIR), pp. 137-144, London, UK, Sep. 11 - 15, 2005.
Slides are available.

Caching in Web Memory Hierarchies
Proceedings of the ACM Symposium on Applied Computing (ACM SAC), ACM Press, pp. 1109-1113, Nicosia, Cyprus, Mar. 2004.
Slides are available.

Clustering Mobile Trajectories for Resource Allocation in Mobile Environments
Proceedings of the Symposium on Intelligent Data Analysis (IDA), Also, appears as chapter in Lecture Notes in Computer Sciece (LNCS), vol. 2810, Springer-Verlag, pp. 319-329, Berlin, Germany, Aug. 2003.

Updating Web Views Distributed Over Wide Area Networks
Proceedings of the Balkan Conference on Informatics (BCI), pp. 267-279, Thessaloniki, Greece, Nov. 2003.
Slides are available.

Effective Prediction of Web User Accesses: A Data Mining Approach
Proceedings of the WebKDD Workshop (WebKDD), San Francisco, CA, USA, Aug. 2001.
Slides are available.

Backpropagation for Convolutional Neural Networks
2021.