Christos N. Karras

48 papers B 2C 2Journal 21Unranked 23

Year	Rank	Type	Title / Venue / Authors
2026	J	`jnl`	Next-Gen Explainable AI (XAI) for Federated and Distributed Internet of Things Systems: A State-of-the-Art Survey. Future Internet Aristeidis Karras, Anastasios Giannaros, Natalia Amasiadi, Christos N. Karras
2026	J	`jnl`	Towards LLM-Driven Cybersecurity in Autonomous Vehicles: A Big Data-Empowered Framework with Emerging Technologies. Mach. Learn. Knowl. Extr. Aristeidis Karras, Leonidas Theodorakopoulos, Christos N. Karras, Alexandra Theodoropoulou
2025	J	`jnl`	LLM-Driven Big Data Management Across Digital Governance, Marketing, and Accounting: A Spark-Orchestrated Framework. Algorithms Aristeidis Karras, Leonidas Theodorakopoulos, Christos N. Karras, George A. Krimpas, Anastasios Giannaros, Charalampos-Panagiotis Bakalis
2025	J	`jnl`	LLMs for Cybersecurity in the Big Data Era: A Comprehensive Review of Applications, Challenges, and Future Directions. Inf. Aristeidis Karras, Leonidas Theodorakopoulos, Christos N. Karras, Alexandra Theodoropoulou, Ioanna Kalliampakou, Gerasimos Kalogeratos
2025	J	`jnl`	MCMC Methods: From Theory to Distributed Hamiltonian Monte Carlo over PySpark. Algorithms Christos N. Karras, Leonidas Theodorakopoulos, Aristeidis Karras, George A. Krimpas, Charalampos-Panagiotis Bakalis, Alexandra Theodoropoulou
2024	J	`jnl`	Advanced Optimization Techniques for Federated Learning on Non-IID Data. Future Internet Filippos Efthymiadis, Aristeidis Karras, Christos N. Karras, Spyros Sioutas
2024	B	`conf`	Cyber Threat Intelligence in Smart Cities: Bayesian Inference and Energy Optimization in LoRa Networks for Big Data Applications. IEEE Big Data Aristeidis Karras, Leonidas Theodorakopoulos, Christos N. Karras, Hera Antonopoulou
2024	J	`jnl`	Distributed Bayesian Inference for Large-Scale IoT Systems. Big Data Cogn. Comput. Eleni Vlachou, Aristeidis Karras, Christos N. Karras, Leonidas Theodorakopoulos, Constantinos Halkiopoulos, Spyros Sioutas
2024	J	`jnl`	Efficient Algorithms for Range Mode Queries in the Big Data Era. Inf. Christos N. Karras, Leonidas Theodorakopoulos, Aristeidis Karras, George A. Krimpas
2024	J	`jnl`	TinyML Algorithms for Big Data Management in Large-Scale IoT Systems. Future Internet Aristeidis Karras, Anastasios Giannaros, Christos N. Karras, Leonidas Theodorakopoulos, Constantinos S. Mammassis, George A. Krimpas, Spyros Sioutas
2023	—	`conf`	Algorithmic Aspects of Distributed Hash Tables on Cloud, Fog, and Edge Computing Applications: A Survey. ALGOCLOUD Aristeidis Karras, Christos N. Karras, Nikolaos Schizas, Spyros Sioutas, Christos D. Zaroliagis
2023	—	`conf`	An Adaptive, Energy-Efficient DRL-Based and MCMC-Based Caching Strategy for IoT Systems. ALGOCLOUD Aristeidis Karras, Christos N. Karras, Ioannis Karydis, Markos Avlonitis, Spyros Sioutas
2023	J	`jnl`	An Integrated GIS-Based Reinforcement Learning Approach for Efficient Prediction of Disease Transmission in Aquaculture. Inf. Aristeidis Karras, Christos N. Karras, Spyros Sioutas, Christos Makris, George Katselis, Ioannis Hatzilygeroudis, John A. Theodorou, Dimitrios Tsolis
2023	J	`jnl`	AutoML with Bayesian Optimizations for Big Data Management. Inf. Aristeidis Karras, Christos N. Karras, Nikolaos Schizas, Markos Avlonitis, Spyros Sioutas
2023	J	`jnl`	Autonomous Vehicles: Sophisticated Attacks, Safety Issues, Challenges, Open Topics, Blockchain, and Future Directions. J. Cybersecur. Priv. Anastasios Giannaros, Aristeidis Karras, Leonidas Theodorakopoulos, Christos N. Karras, Panagiotis Kranias, Nikolaos Schizas, Gerasimos Kalogeratos, Dimitrios Tsolis
2023	J	`jnl`	Consensus Big Data Clustering for Bayesian Mixture Models. Algorithms Christos N. Karras, Aristeidis Karras, Konstantinos C. Giotopoulos, Markos Avlonitis, Spyros Sioutas
2023	—	`conf`	Decentralized Algorithms for Efficient Energy Management over Cloud-Edge Infrastructures. ALGOCLOUD Aristeidis Karras, Christos N. Karras, Ioanna Giannoukou, Konstantinos C. Giotopoulos, Dimitrios Tsolis, Ioannis Karydis, Spyros Sioutas
2023	J	`jnl`	EVCA Classifier: A MCMC-Based Classifier for Analyzing High-Dimensional Big Data. Inf. Eleni Vlachou, Christos N. Karras, Aristeidis Karras, Dimitrios Tsolis, Spyros Sioutas
2023	—	`conf`	Edge Artificial Intelligence in Large-Scale IoT Systems, Applications, and Big Data Infrastructures. SEEDA-CECNSM Aristeidis Karras, Anastasios Giannaros, Christos N. Karras, Konstantinos C. Giotopoulos, Dimitrios Tsolis, Spyros Sioutas
2023	J	`jnl`	Federated Edge Intelligence and Edge Caching Mechanisms. Inf. Aristeidis Karras, Christos N. Karras, Konstantinos C. Giotopoulos, Dimitrios Tsolis, Konstantinos Oikonomou, Spyros Sioutas
2023	—	`conf`	Mobility-Aware Workload Distribution and Task Allocation for Mobile Edge Computing Networks. ACR Aristeidis Karras, Christos N. Karras, Anastasios Giannaros, Dimitrios Tsolis, Spyros Sioutas
2023	J	`jnl`	Modelling and Analysis of Neuro Fuzzy Employee Ranking System in the Public Sector. Algorithms Konstantinos C. Giotopoulos, Dimitrios Michalopoulos, Aristeidis Karras, Christos N. Karras, Spyros Sioutas
2023	—	`conf`	TinyML-based Event Detection: An Edge-Cloud Approach for Smart Agriculture over LoRa WSNs. SEEDA-CECNSM Aristeidis Karras, Christos N. Karras, Anastasios Giannaros, Konstantinos C. Giotopoulos, Dimitrios Tsolis, Konstantinos Oikonomou, Spyros Sioutas
2023	J	`jnl`	WiCHORD+: A Scalable, Sustainable, and P2P Chord-Based Ecosystem for Smart Agriculture Applications. Sensors Christos-Panagiotis Balatsouras, Aristeidis Karras, Christos N. Karras, Ioannis Karydis, Spyros Sioutas
2022	B	`conf`	A Hybrid Ensemble Deep Learning Approach for Emotion Classification. IEEE Big Data Christos N. Karras, Aristeidis Karras, Dimitrios Tsolis, Markos Avlonitis, Spyros Sioutas
2022	—	`conf`	A LoRa-Based Emotion Estimation Scheme for Smart Home Automated Actions Using ELMs. ISC2 Christos N. Karras, Aristeidis Karras, Georgios Drakopoulos, Dimitrios Tsolis, Phivos Mylonas, Spyros Sioutas
2022	—	`conf`	An Intelligent Microprocessor Integrating TinyML in Smart Hotels for Rapid Accident Prevention. SEEDA-CECNSM Angelos Zacharia, Dimitris Zacharia, Aristeidis Karras, Christos N. Karras, Ioanna Giannoukou, Konstantinos C. Giotopoulos, Spyros Sioutas
2022	—	`conf`	An Overview of MCMC Methods: From Theory to Applications. AIAI (Workshops) Christos N. Karras, Aristeidis Karras, Markos Avlonitis, Spyros Sioutas
2022	J	`jnl`	DBSOP: An Efficient Heuristic for Speedy MCMC Sampling on Polytopes. CoRR Christos N. Karras, Aristeidis Karras
2022	—	`conf`	Decomposing Twitter Graphs Based On Hashtag Trajectories: Mining And Clustering Paths Over MongoDB. SETN Georgios Drakopoulos, Aristeidis Karras, Christos N. Karras, Konstantinos C. Giotopoulos, Phivos Mylonas, Spyros Sioutas
2022	—	`conf`	Distributed Gibbs Sampling and LDA Modelling for Large Scale Big Data Management on PySpark. SEEDA-CECNSM Christos N. Karras, Aristeidis Karras, Dimitrios Tsolis, Konstantinos C. Giotopoulos, Spyros Sioutas
2022	—	`conf`	Download Speed Optimization in P2P Networks Using Decision Making and Adaptive Learning. ICR Aristeidis Karras, Christos N. Karras, Konstantinos C. Giotopoulos, Ioanna Giannoukou, Dimitrios Tsolis, Spyros Sioutas
2022	—	`conf`	Expanding Queries with Maximum Likelihood Estimators and Language Models. ICR Christos N. Karras, Aristeidis Karras, Leonidas Theodorakopoulos, Ioanna Giannoukou, Spyros Sioutas
2022	—	`conf`	Global Graph Clustering and Local Graph Exploration for Community Detection in Twitter. SEEDA-CECNSM Christos N. Karras, Aristeidis Karras, Ioanna Giannoukou, Konstantinos C. Giotopoulos, Dimitrios Tsolis, Spyros Sioutas
2022	J	`jnl`	Integrating User and Item Reviews in Deep Cooperative Neural Networks for Movie Ranking Prediction. CoRR Aristeidis Karras, Christos N. Karras
2022	—	`conf`	Maximum Likelihood Estimators on MCMC Sampling Algorithms for Decision Making. AIAI (Workshops) Christos N. Karras, Aristeidis Karras, Markos Avlonitis, Ioanna Giannoukou, Spyros Sioutas
2022	—	`conf`	Neuro-Fuzzy Employee Ranking System in the Public Sector. FSDM Dimitrios Michalopoulos, Aristeidis Karras, Christos N. Karras, Spyros Sioutas, Konstantinos C. Giotopoulos
2022	C	`conf`	On Autonomous Drone Navigation Using Deep Learning and an Intelligent Rainbow DQN Agent. IDEAL Andreas Karatzas, Aristeidis Karras, Christos N. Karras, Konstantinos C. Giotopoulos, Konstantinos Oikonomou, Spyros Sioutas
2022	J	`jnl`	Pattern Recognition and Event Detection on IoT Data-streams. CoRR Christos N. Karras, Aristeidis Karras, Spyros Sioutas
2022	—	`conf`	Peer to Peer Federated Learning: Towards Decentralized Machine Learning on Edge Devices. SEEDA-CECNSM Aristeidis Karras, Christos N. Karras, Konstantinos C. Giotopoulos, Dimitrios Tsolis, Konstantinos Oikonomou, Spyros Sioutas
2022	C	`conf`	Query Optimization in NoSQL Databases Using an Enhanced Localized R-tree Index. iiWAS Aristeidis Karras, Christos N. Karras, Dimitrios Samoladas, Konstantinos C. Giotopoulos, Spyros Sioutas
2022	—	`conf`	SAF: A Peer to Peer IoT LoRa System for Smart Supply Chain in Agriculture. AIAI (2) Aristeidis Karras, Christos N. Karras, Georgios Drakopoulos, Dimitrios Tsolis, Phivos Mylonas, Spyros Sioutas
2022	—	`conf`	SQL Query Optimization in Distributed NoSQL Databases for Cloud-Based Applications. ALGOCLOUD Aristeidis Karras, Christos N. Karras, Antonios Pervanas, Spyros Sioutas, Christos D. Zaroliagis
2022	—	`conf`	SparkReact: A Novel and User-friendly Graphical Interface for the Apache Spark MLlib Library. PCI Aristeidis Karras, Christos N. Karras, Agorakis Bompotas, Panagiotis Bouras, Leonidas Theodorakopoulos, Spyros Sioutas
2022	J	`jnl`	TinyML for Ultra-Low Power AI and Large Scale IoT Deployments: A Systematic Review. Future Internet Nikolaos Schizas, Aristeidis Karras, Christos N. Karras, Spyros Sioutas
2022	—	`conf`	Tree Data Structures and Efficient Indexing Techniques for Big Data Management: A Comprehensive Study. PCI Dimitrios Samoladas, Christos N. Karras, Aristeidis Karras, Leonidas Theodorakopoulos, Spyros Sioutas
2022	—	`conf`	Weighted Reservoir Sampling On Evolving Streams: A Sampling Algorithmic Framework For Stream Event Identification. SETN Christos N. Karras, Aristeidis Karras, Georgios Drakopoulos, Konstantinos Tsakalidis, Phivos Mylonas, Spyros Sioutas
2022	—	`conf`	WiCHORD: A Chord Protocol Application on P2P LoRa Wireless Sensor Networks. IISA Christos-Panagiotis Balatsouras, Aristeidis Karras, Christos N. Karras, Dimitrios Tsolis, Spyros Sioutas