Charalampos Konstantopoulos

99 papers A 1B 6C 9Misc 2Journal 45Unranked 33

Year	Rank	Type	Title / Venue / Authors
2025	—	`conf`	Personalized Vacation Planning: An Efficient Heuristic Approach. ISC2 Nikolaos Vathis, Grammati E. Pantziou, Charalampos Konstantopoulos, Damianos Gavalas
2024	—	`conf`	Clustered-NSGA-II+: A Multi-Objective Evolutionary Genetic Algorithm for Solving the Ride-Sharing Problem with the Same Destination. IISA Emmanouil Bakiris, Charalampos Konstantopoulos
2024	C	`conf`	Solving the Regular Language-Constrained Team Orienteering Problem with Time Windows for Route Planning Applications. ISCC Nikolaos Vathis, Grammati E. Pantziou, Charalampos Konstantopoulos, Damianos Gavalas
2024	J	`jnl`	The regular language-constrained orienteering problem with time windows. Appl. Soft Comput. Nikolaos Vathis, Grammati E. Pantziou, Charalampos Konstantopoulos, Damianos Gavalas
2023	J	`jnl`	Enhancing shopping experiences in smart retailing. J. Ambient Intell. Humaniz. Comput. Lorena Bourg, Thomas Chatzidimitris, Ioannis Chatzigiannakis, Damianos Gavalas, Kalliopi Giannakopoulou, Vlasios Kasapakis, Charalampos Konstantopoulos, Damianos Kypriadis, Grammati E. Pantziou, Christos D. Zaroliagis
2023	J	`jnl`	The Vacation Planning Problem: A multi-level clustering-based metaheuristic approach. Comput. Oper. Res. Nikolaos Vathis, Charalampos Konstantopoulos, Grammati E. Pantziou, Damianos Gavalas
2022	J	`jnl`	Perceptions and needs of health professionals concerning health information systems. Informatica (Slovenia) Konstantinos Milioris, Charalampos Konstantopoulos, Konstantinos Papageorgiou
2020	J	`jnl`	A location history-aware recommender system for smart retail environments. Pers. Ubiquitous Comput. Thomas Chatzidimitris, Damianos Gavalas, Vlasios Kasapakis, Charalampos Konstantopoulos, Damianos Kypriadis, Grammati E. Pantziou, Christos D. Zaroliagis
2020	J	`jnl`	Optimizing Relocation Cost in Free-Floating Car-Sharing Systems. IEEE Trans. Intell. Transp. Syst. Damianos Kypriadis, Grammati E. Pantziou, Charalampos Konstantopoulos, Damianos Gavalas
2019	B	`conf`	A Location History-Aware Retail Product Recommender System. WiMob Thomas Chatzidimitris, Damianos Gavalas, Vlasios Kasapakis, Charalampos Konstantopoulos, Damianos Kypriadis, Grammati E. Pantziou, Christos D. Zaroliagis
2019	—	`conf`	An Efficient Heuristic for the Vacation Planning Problem. UEMCON Damianos Gavalas, Charalampos Konstantopoulos, Grammati E. Pantziou, Nikolaos Vathis
2019	—	`conf`	An Efficient Scheme for Dynamic Car Relocation in Free-Floating Car-Sharing Systems. ISC2 Damianos Kypriadis, Charalampos Konstantopoulos, Grammati E. Pantziou, Damianos Gavalas
2019	J	`jnl`	Efficient Cluster-Based Heuristics for the Team Orienteering Problem with Time Windows. Asia Pac. J. Oper. Res. Damianos Gavalas, Charalampos Konstantopoulos, Konstantinos Mastakas, Grammati E. Pantziou
2019	—	`conf`	Enhanced Buying Experiences in Smart Cities: The SMARTBUY Approach. AmI Lorena Bourg, Thomas Chatzidimitris, Ioannis Chatzigiannakis, Damianos Gavalas, Kalliopi Giannakopoulou, Vlasios Kasapakis, Charalampos Konstantopoulos, Damianos Kypriadis, Grammati E. Pantziou, Christos D. Zaroliagis
2018	J	`jnl`	Employing mobile elements for delay-constrained data gathering in WSNs. Comput. Networks Charalampos Konstantopoulos, Nikolaos Vathis, Grammati E. Pantziou, Damianos Gavalas
2018	—	`conf`	Minimum Walking Static Repositioning in Free-Floating Electric Car-Sharing Systems. ITSC Damianos Kypriadis, Grammati E. Pantziou, Charalampos Konstantopoulos, Damianos Gavalas
2018	J	`jnl`	Mobile agents-based data aggregation in WSNs: benchmarking itinerary planning approaches. Wirel. Networks Ioannis E. Venetis, Damianos Gavalas, Grammati E. Pantziou, Charalampos Konstantopoulos
2018	C	`conf`	Renewable Mobility in Smart Cities: Cloud-Based Services. ISCC Damianos Gavalas, Kalliopi Giannakopoulou, Vlasios Kasapakis, Dionisis D. Kehagias, Charalampos Konstantopoulos, Spyros C. Kontogiannis, Damianos Kypriadis, Grammati E. Pantziou, Andreas Paraskevopoulos, Christos D. Zaroliagis
2018	—	`conf`	Secure and trust-aware routing in wireless sensor networks. PCI Charalampos Konstantopoulos, Basilis Mamalis, Grammati E. Pantziou
2017	C	`conf`	Eco-aware vehicle routing in urban environments. ISCC Julian Dibbelt, Dionisis D. Kehagias, Grammati E. Pantziou, Damianos Gavalas, Charalampos Konstantopoulos, Dorothea Wagner, Kalliopi Giannakopoulou, Spyros C. Kontogiannis, Christos D. Zaroliagis
2017	J	`jnl`	Minimizing the fuel consumption and the risk in maritime transportation: A bi-objective weather routing approach. Comput. Oper. Res. Aphrodite Veneti, Angelos Makrygiorgos, Charalampos Konstantopoulos, Grammati E. Pantziou, Ioannis A. Vetsikas
2017	J	`jnl`	Mobile agent itinerary planning for WSN data fusion: considering multiple sinks and heterogeneous networks. Int. J. Commun. Syst. Damianos Gavalas, Ioannis E. Venetis, Charalampos Konstantopoulos, Grammati E. Pantziou
2017	C	`conf`	Multimodal route and tour planning in urban environments. ISCC Julian Dibbelt, Charalampos Konstantopoulos, Dorothea Wagner, Damianos Gavalas, Spyros C. Kontogiannis, Christos D. Zaroliagis, Vlasios Kasapakis, Grammati E. Pantziou
2017	J	`jnl`	Scenic route planning for tourists. Pers. Ubiquitous Comput. Damianos Gavalas, Vlasios Kasapakis, Charalampos Konstantopoulos, Grammati E. Pantziou, Nikolaos Vathis
2016	—	`conf`	A composite algorithm for the team orienteering problem with time windows. IISA Charalampos Konstantopoulos, Dimitrios Orfanos
2016	—	`conf`	An Optimization Model for the Strategic Design of a Bicycle Sharing System: A Case Study in the City of Athens. PCI Alexandros Angelopoulos, Damianos Gavalas, Charalampos Konstantopoulos, Damianos Kypriadis, Grammati E. Pantziou
2016	J	`jnl`	Efficient Metaheuristics for the Mixed Team Orienteering Problem with Time Windows. Algorithms Damianos Gavalas, Charalampos Konstantopoulos, Konstantinos Mastakas, Grammati E. Pantziou, Nikolaos Vathis
2016	J	`jnl`	Efficient event handling in Wireless Sensor and Actor Networks: An on-line computation approach. J. Netw. Comput. Appl. Charalampos Konstantopoulos, Grammati E. Pantziou, Ioannis E. Venetis, Damianos Gavalas
2016	J	`jnl`	Energy-efficient multiple itinerary planning for mobile agents-based data aggregation in WSNs. Telecommun. Syst. Damianos Gavalas, Ioannis E. Venetis, Charalampos Konstantopoulos, Grammati E. Pantziou
2016	—	`conf`	Incentivization schemes for vehicle allocation in one-way vehicle sharing systems. ISC2 Alexandros Angelopoulos, Damianos Gavalas, Charalampos Konstantopoulos, Damianos Kypriadis, Grammati E. Pantziou
2016	C	`conf`	Scenic Athens: A personalized scenic route planner for tourists. ISCC Damianos Gavalas, Vlasios Kasapakis, Grammati E. Pantziou, Charalampos Konstantopoulos, Nikolaos Vathis, Konstantinos Mastakas, Christos D. Zaroliagis
2016	C	`conf`	Time-Dependent Bi-Objective Itinerary Planning Algorithm: Application in Sea Transportation. ATMOS Aphrodite Veneti, Charalampos Konstantopoulos, Grammati E. Pantziou
2015	—	`conf`	An Iterated Local Search Approach for Multiple Itinerary Planning in Mobile Agent-Based Sensor Fusion. MSN Damianos Gavalas, Ioannis E. Venetis, Grammati E. Pantziou, Charalampos Konstantopoulos
2015	—	`conf`	An evolutionary approach to multi-objective ship weather routing. IISA Aphrodite Veneti, Charalampos Konstantopoulos, Grammati E. Pantziou
2015	J	`jnl`	An image processing inspired mobile sink solution for energy efficient data gathering in wireless sensor networks. Wirel. Networks Charalampos Konstantopoulos, Basilis Mamalis, Grammati E. Pantziou, Vasileios Thanasias
2015	J	`jnl`	Approximation algorithms for the arc orienteering problem. Inf. Process. Lett. Damianos Gavalas, Charalampos Konstantopoulos, Konstantinos Mastakas, Grammati E. Pantziou, Nikolaos Vathis
2015	J	`jnl`	Design and Management of Vehicle Sharing Systems: A Survey of Algorithmic Approaches. CoRR Damianos Gavalas, Charalampos Konstantopoulos, Grammati E. Pantziou
2015	—	`conf`	Efficient Delay-Constrained Data Collection in Wireless Sensor Networks Using Mobile Sinks. WMNC Charalampos Konstantopoulos, Nikolaos Vathis, Grammati E. Pantziou, Damianos Gavalas
2015	J	`jnl`	Hands-On Experiences in Deploying Cost-Effective Ambient-Assisted Living Systems. Sensors Athanasios Dasios, Damianos Gavalas, Grammati E. Pantziou, Charalampos Konstantopoulos
2015	J	`jnl`	Heuristics for the time dependent team orienteering problem: Application to tourist route planning. Comput. Oper. Res. Damianos Gavalas, Charalampos Konstantopoulos, Konstantinos Mastakas, Grammati E. Pantziou, Nikolaos Vathis
2015	J	`jnl`	The eCOMPASS multimodal tourist tour planner. Expert Syst. Appl. Damianos Gavalas, Vlasios Kasapakis, Charalampos Konstantopoulos, Grammati E. Pantziou, Nikolaos Vathis, Christos D. Zaroliagis
2015	—	`conf`	Wireless sensor network deployment for remote elderly care monitoring. PETRA Athanasios Dasios, Damianos Gavalas, Grammati E. Pantziou, Charalampos Konstantopoulos
2014	B	`conf`	A personalized multimodal tourist tour planner. MUM Damianos Gavalas, Vlasios Kasapakis, Charalampos Konstantopoulos, Grammati E. Pantziou, Nikolaos Vathis, Christos D. Zaroliagis
2014	J	`jnl`	A survey on algorithmic approaches for solving tourist trip design problems. J. Heuristics Damianos Gavalas, Charalampos Konstantopoulos, Konstantinos Mastakas, Grammati E. Pantziou
2014	C	`conf`	An efficient event handling protocol for Wireless Sensor and Actor Networks. ISCC Charalampos Konstantopoulos, Ioannis E. Venetis, Grammati E. Pantziou, Damianos Gavalas
2014	—	`conf`	Benchmarking mobile agent itinerary planning algorithms for data aggregation on WSNs. ICUFN Ioannis E. Venetis, Grammati E. Pantziou, Damianos Gavalas, Charalampos Konstantopoulos
2014	—	`conf`	Efficient Heuristics for the Time Dependent Team Orienteering Problem with Time Windows. ICAA Damianos Gavalas, Charalampos Konstantopoulos, Konstantinos Mastakas, Grammati E. Pantziou, Nikolaos Vathis
2014	—	`conf`	Efficient mobile sink-based data gathering in wireless sensor networks with guaranteed delay. MOBIWAC Charalampos Konstantopoulos, Grammati E. Pantziou, Nikolaos Vathis, Vasileios Nakos, Damianos Gavalas
2014	J	`jnl`	Mobile recommender systems in tourism. J. Netw. Comput. Appl. Damianos Gavalas, Charalampos Konstantopoulos, Konstantinos Mastakas, Grammati E. Pantziou
2013	—	`conf`	A survey on mobile tourism Recommender Systems. ICCIT Damianos Gavalas, Vlasios Kasapakis, Charalampos Konstantopoulos, Konstantinos Mastakas, Grammati E. Pantziou
2013	B	`conf`	Cluster-Based Heuristics for the Team Orienteering Problem with Time Windows. SEA Damianos Gavalas, Charalampos Konstantopoulos, Konstantinos Mastakas, Grammati E. Pantziou, Yiannis Tasoulas
2013	J	`jnl`	Special issue: Reactive wireless sensor networks. Comput. Commun. Charalampos Konstantopoulos, Paolo Bellavista, Chi-Fu Huang, Damla Turgut
2012	J	`jnl`	A Rendezvous-Based Approach Enabling Energy-Efficient Sensory Data Collection with Mobile Sinks. IEEE Trans. Parallel Distributed Syst. Charalampos Konstantopoulos, Grammati E. Pantziou, Damianos Gavalas, Aristides Mpitziopoulos, Basilis Mamalis
2012	J	`jnl`	User-Directed, Cluster-Based Retrieval for Large Document Collections in Highly Parallel Environments. Int. J. Comput. Their Appl. Petros Belsis, Charalampos Konstantopoulos, Basilis Mamalis, Grammati E. Pantziou, Christos Skourlas
2012	—	`conf`	Watershed-Based Clustering for Energy Efficient Data Gathering in Wireless Sensor Networks with Mobile Collector. Euro-Par Charalampos Konstantopoulos, Basilis Mamalis, Grammati E. Pantziou, Vasileios Thanasias
2012	J	`jnl`	Web application for recommending personalised mobile tourist routes. IET Softw. Damianos Gavalas, Michael Kenteris, Charalampos Konstantopoulos, Grammati E. Pantziou
2011	J	`jnl`	A pervasive assistive environment for visually impaired people using wireless sensor network infrastructure. J. Netw. Comput. Appl. Aristides Mpitziopoulos, Charalampos Konstantopoulos, Damianos Gavalas, Grammati E. Pantziou
2011	J	`jnl`	Clustering of Mobile Ad Hoc Networks: An Adaptive Broadcast Period Approach CoRR Damianos Gavalas, Grammati E. Pantziou, Charalampos Konstantopoulos, Basilis Mamalis
2011	J	`jnl`	Lowest-ID with Adaptive ID Reassignment: A Novel Mobile Ad-Hoc Networks Clustering Algorithm CoRR Damianos Gavalas, Grammati E. Pantziou, Charalampos Konstantopoulos, Basilis Mamalis
2011	J	`jnl`	Mobility in Wireless Sensor Networks. Comput. J. Damianos Gavalas, Grammati E. Pantziou, Charalampos Konstantopoulos
2011	B	`conf`	Personalized routes for mobile tourism. WiMob Damianos Gavalas, Michael Kenteris, Charalampos Konstantopoulos, Grammati E. Pantziou
2010	J	`jnl`	An approach for near-optimal distributed data fusion in wireless sensor networks. Wirel. Networks Damianos Gavalas, Aristides Mpitziopoulos, Grammati E. Pantziou, Charalampos Konstantopoulos
2010	J	`jnl`	CBID: A Scalable Method for Distributed Data Aggregation in WSNs. Int. J. Distributed Sens. Networks Aristides Mpitziopoulos, Damianos Gavalas, Charalampos Konstantopoulos, Grammati E. Pantziou
2010	J	`jnl`	Effective Determination of Mobile Agent Itineraries for Data Aggregation on Sensor Networks. IEEE Trans. Knowl. Data Eng. Charalampos Konstantopoulos, Aristides Mpitziopoulos, Damianos Gavalas, Grammati E. Pantziou
2010	C	`conf`	Near-optimal personalized daily itineraries for a mobile tourist guide. ISCC Michael Kenteris, Damianos Gavalas, Grammati E. Pantziou, Charalampos Konstantopoulos
2009	—	`conf`	A scheme for on-site service provision in pervasive assistive environments. PETRA Grammati E. Pantziou, Petros Belsis, Damianos Gavalas, Charalampos Konstantopoulos, Basilis Mamalis
2009	J	`jnl`	A survey on jamming attacks and countermeasures in WSNs. IEEE Commun. Surv. Tutorials Aristides Mpitziopoulos, Damianos Gavalas, Charalampos Konstantopoulos, Grammati E. Pantziou
2009	J	`jnl`	Efficient parallel Text Retrieval techniques on Bulk Synchronous Parallel (BSP)/Coarse Grained Multicomputers (CGM). J. Supercomput. Charalampos Konstantopoulos, Basilis Mamalis, Grammati E. Pantziou, Damianos Gavalas
2009	J	`jnl`	JAID: An algorithm for data fusion and jamming avoidance on distributed sensor networks. Pervasive Mob. Comput. Aristides Mpitziopoulos, Damianos Gavalas, Charalampos Konstantopoulos, Grammati E. Pantziou
2009	—	`ch.`	Mobile Agent Middleware for Autonomic Data Fusion in Wireless Sensor Networks. Autonomic Computing and Networking Aristides Mpitziopoulos, Damianos Gavalas, Charalampos Konstantopoulos, Grammati E. Pantziou
2009	—	`conf`	Mobile Sinks for Information Retrieval from Cluster-Based WSN Islands. ADHOC-NOW Grammati E. Pantziou, Aristides Mpitziopoulos, Damianos Gavalas, Charalampos Konstantopoulos, Basilis Mamalis
2008	J	`jnl`	ABP: a low-cost, energy-efficient clustering algorithm for relatively static and quasi-static MANETs. Int. J. Sens. Networks Damianos Gavalas, Grammati E. Pantziou, Charalampos Konstantopoulos, Basilis Mamalis
2008	J	`jnl`	Clustering in mobile ad hoc networks through neighborhood stability-based mobility prediction. Comput. Networks Charalampos Konstantopoulos, Damianos Gavalas, Grammati E. Pantziou
2008	C	`conf`	Exploiting the cloning capability of Mobile Agents for cost-effective data fusion in wireless sensor networks. ISCC Aristides Mpitziopoulos, Damianos Gavalas, Charalampos Konstantopoulos, Grammati E. Pantziou
2008	—	`conf`	Hazard monitoring for visually impaired people enabled by wireless sensor networking technology. PETRA Aristides Mpitziopoulos, Charalampos Konstantopoulos, Damianos Gavalas, Grammati E. Pantziou
2008	—	`ch.`	Interactive Cluster-Based Personalized Retrieval on Large Document Collections. New Directions in Intelligent Interactive Multimedia Petros Belsis, Charalampos Konstantopoulos, Basilis Mamalis, Grammati E. Pantziou, Christos Skourlas
2007	B	`conf`	Defending Wireless Sensor Networks from Jamming Attacks. PIMRC Aristides Mpitziopoulos, Damianos Gavalas, Grammati E. Pantziou, Charalampos Konstantopoulos
2007	B	`conf`	Deriving Efficient Mobile Agent Routes in Wireless Sensor Networks with NOID Algorithm. PIMRC Aristides Mpitziopoulos, Damianos Gavalas, Charalampos Konstantopoulos, Grammati E. Pantziou
2007	J	`jnl`	LIDAR: a protocol for stable and energy-efficient clustering of ad-hoc multihop networks. Telecommun. Syst. Damianos Gavalas, Grammati E. Pantziou, Charalampos Konstantopoulos, Basilis Mamalis
2007	J	`jnl`	Optimal hypercube simulation on the partitioned optical passive stars network. J. Supercomput. Charalampos Konstantopoulos, Christos Kaklamanis
2006	Misc	`conf`	A Method for Incremental Data Fusion in Distributed Sensor Networks. AIAI Damianos Gavalas, Grammati E. Pantziou, Charalampos Konstantopoulos, Basilis Mamalis
2006	Misc	`conf`	A Mobility Aware Technique for Clustering on Mobile Ad-Hoc Networks. ICDCN Charalampos Konstantopoulos, Damianos Gavalas, Grammati E. Pantziou
2006	—	`conf`	Clustering of Mobile Ad Hoc Networks: An Adaptive Broadcast Period Approach. ICC Damianos Gavalas, Grammati E. Pantziou, Charalampos Konstantopoulos, Basilis Mamalis
2006	—	`conf`	Stable and Energy Efficient Clustering of Wireless Ad-Hoc Networks with LIDAR Algorithm. PWC Damianos Gavalas, Grammati E. Pantziou, Charalampos Konstantopoulos, Basilis Mamalis
2005	—	`conf`	An Efficient and Scalable Clustering Algorithm for Wireless Ad Hoc Networks. IASTED PDCS Damianos Gavalas, Grammati E. Pantziou, Basilis Mamalis, Charalampos Konstantopoulos
2005	—	`conf`	Efficient Active Clustering of Mobile Ad-Hoc Networks. Panhellenic Conference on Informatics Damianos Gavalas, Grammati E. Pantziou, Charalampos Konstantopoulos, Basilis Mamalis
2005	—	`conf`	Efficient BSP/CGM Algorithms for Text Retrieval. IASTED PDCS Damianos Gavalas, Charalampos Konstantopoulos, Basilis Mamalis, Grammati E. Pantziou
2005	—	`conf`	Optimal Embedding of the Hypercube on Partitioned Optical Passive Stars Networks. Euro-Par Christos Kaklamanis, Charalampos Konstantopoulos
2004	J	`jnl`	Efficient binary and grey level morphological operations on a massively parallel processor. Parallel Algorithms Appl. Andreas Svolos, Charalampos Konstantopoulos, Christos Kaklamanis
2002	—	`conf`	A Parallel Solution in Texture Analysis Employing a Massively Parallel Processor (Research Note). Euro-Par Andreas Svolos, Charalampos Konstantopoulos, Christos Kaklamanis
2001	—	`conf`	A hypercube parallel algorithm in texture analysis. SIP Andreas Svolos, Charalampos Konstantopoulos, Christos Kaklamanis
2001	J	`jnl`	Efficient primitive binary morphological algorithms on a massively parallel processor. J. Electronic Imaging Andreas Svolos, Charalampos Konstantopoulos, Christos Kaklamanis
2000	J	`jnl`	A Hypercube Algorithm for Sliding Window Compression. Parallel Process. Lett. Christos Kaklamanis, Charalampos Konstantopoulos, Andreas Svolos
2000	J	`jnl`	An efficient parallel algorithm for motion estimation in very low bit-rate video coding systems. Concurr. Pract. Exp. Charalampos Konstantopoulos, Andreas Svolos, Christos Kaklamanis
2000	—	`conf`	Sliding-Window Compression on the Hypercube (Research Note). Euro-Par Charalampos Konstantopoulos, Andreas Svolos, Christos Kaklamanis
2000	A	`conf`	fficient Binary Morphological Algorithms on a Massively Parallel Processor. IPDPS Andreas Svolos, Charalampos Konstantopoulos, Christos Kaklamanis
2000	—	`—`	Παράλληλες υλοποήσεις θεμελιωδών εργαλείων της τεχνολογίας των πολυμέσων Charalampos Konstantopoulos
1999	—	`conf`	Efficient shape transformations on a massively parallel processor. Electronic Imaging: Nonlinear Image Processing Andreas I. Svolos, Charalampos Konstantopoulos, Christos Kaklamanis
1999	—	`conf`	Hierarchical Block Matching Motion Estimation on a Hypercube Multiprocessor. ACPC Charalampos Konstantopoulos, Andreas Svolos, Christos Kaklamanis