Charalampos Konstantopoulos

Publication Activity (10 Years)

Years Active: 1999-2024
Publications (10 Years): 29

Top Topics

Wireless Sensor

Energy Efficient

Top Venues

Comput. Oper. Res.

J. Netw. Comput. Appl.

Publications

Nikolaos Vathis, Grammati E. Pantziou, Charalampos Konstantopoulos, Damianos Gavalas
The regular language-constrained orienteering problem with time windows. Appl. Soft Comput. 151 (2024)
Nikolaos Vathis, Charalampos Konstantopoulos, Grammati E. Pantziou, Damianos Gavalas
The Vacation Planning Problem: A multi-level clustering-based metaheuristic approach. Comput. Oper. Res. 150 (2023)
Lorena Bourg, Thomas Chatzidimitris, Ioannis Chatzigiannakis, Damianos Gavalas, Kalliopi Giannakopoulou, Vlasios Kasapakis, Charalampos Konstantopoulos, Damianos Kypriadis, Grammati E. Pantziou, Christos D. Zaroliagis
Enhancing shopping experiences in smart retailing. J. Ambient Intell. Humaniz. Comput. 14 (12) (2023)
Konstantinos Milioris, Charalampos Konstantopoulos, Konstantinos Papageorgiou
Perceptions and needs of health professionals concerning health information systems. Informatica (Slovenia) 46 (7) (2022)
Thomas Chatzidimitris, Damianos Gavalas, Vlasios Kasapakis, Charalampos Konstantopoulos, Damianos Kypriadis, Grammati E. Pantziou, Christos D. Zaroliagis
A location history-aware recommender system for smart retail environments. Pers. Ubiquitous Comput. 24 (5) (2020)
Damianos Kypriadis, Grammati E. Pantziou, Charalampos Konstantopoulos, Damianos Gavalas
Optimizing Relocation Cost in Free-Floating Car-Sharing Systems. IEEE Trans. Intell. Transp. Syst. 21 (9) (2020)
Damianos Kypriadis, Charalampos Konstantopoulos, Grammati E. Pantziou, Damianos Gavalas
An Efficient Scheme for Dynamic Car Relocation in Free-Floating Car-Sharing Systems. ISC2 (2019)
Damianos Gavalas, Charalampos Konstantopoulos, Konstantinos Mastakas, Grammati E. Pantziou
Efficient Cluster-Based Heuristics for the Team Orienteering Problem with Time Windows. Asia Pac. J. Oper. Res. 36 (1) (2019)
Damianos Gavalas, Charalampos Konstantopoulos, Grammati E. Pantziou, Nikolaos Vathis
An Efficient Heuristic for the Vacation Planning Problem. UEMCON (2019)
Thomas Chatzidimitris, Damianos Gavalas, Vlasios Kasapakis, Charalampos Konstantopoulos, Damianos Kypriadis, Grammati E. Pantziou, Christos D. Zaroliagis
A Location History-Aware Retail Product Recommender System. WiMob (2019)
Lorena Bourg, Thomas Chatzidimitris, Ioannis Chatzigiannakis, Damianos Gavalas, Kalliopi Giannakopoulou, Vlasios Kasapakis, Charalampos Konstantopoulos, Damianos Kypriadis, Grammati E. Pantziou, Christos D. Zaroliagis
Enhanced Buying Experiences in Smart Cities: The SMARTBUY Approach. AmI (2019)
Damianos Gavalas, Kalliopi Giannakopoulou, Vlasios Kasapakis, Dionisis D. Kehagias, Charalampos Konstantopoulos, Spyros C. Kontogiannis, Damianos Kypriadis, Grammati E. Pantziou, Andreas Paraskevopoulos, Christos D. Zaroliagis
Renewable Mobility in Smart Cities: Cloud-Based Services. ISCC (2018)
Charalampos Konstantopoulos, Basilis Mamalis, Grammati E. Pantziou
Secure and trust-aware routing in wireless sensor networks. PCI (2018)
Damianos Kypriadis, Grammati E. Pantziou, Charalampos Konstantopoulos, Damianos Gavalas
Minimum Walking Static Repositioning in Free-Floating Electric Car-Sharing Systems. ITSC (2018)
Charalampos Konstantopoulos, Nikolaos Vathis, Grammati E. Pantziou, Damianos Gavalas
Employing mobile elements for delay-constrained data gathering in WSNs. Comput. Networks 135 (2018)
Ioannis E. Venetis, Damianos Gavalas, Grammati E. Pantziou, Charalampos Konstantopoulos
Mobile agents-based data aggregation in WSNs: benchmarking itinerary planning approaches. Wirel. Networks 24 (6) (2018)
Julian Dibbelt, Dionisis D. Kehagias, Grammati E. Pantziou, Damianos Gavalas, Charalampos Konstantopoulos, Dorothea Wagner, Kalliopi Giannakopoulou, Spyros C. Kontogiannis, Christos D. Zaroliagis
Eco-aware vehicle routing in urban environments. ISCC (2017)
Aphrodite Veneti, Angelos Makrygiorgos, Charalampos Konstantopoulos, Grammati E. Pantziou, Ioannis A. Vetsikas
Minimizing the fuel consumption and the risk in maritime transportation: A bi-objective weather routing approach. Comput. Oper. Res. 88 (2017)
Julian Dibbelt, Charalampos Konstantopoulos, Dorothea Wagner, Damianos Gavalas, Spyros C. Kontogiannis, Christos D. Zaroliagis, Vlasios Kasapakis, Grammati E. Pantziou
Multimodal route and tour planning in urban environments. ISCC (2017)
Damianos Gavalas, Vlasios Kasapakis, Charalampos Konstantopoulos, Grammati E. Pantziou, Nikolaos Vathis
Scenic route planning for tourists. Pers. Ubiquitous Comput. 21 (1) (2017)
Damianos Gavalas, Ioannis E. Venetis, Charalampos Konstantopoulos, Grammati E. Pantziou
Mobile agent itinerary planning for WSN data fusion: considering multiple sinks and heterogeneous networks. Int. J. Commun. Syst. 30 (8) (2017)
Damianos Gavalas, Ioannis E. Venetis, Charalampos Konstantopoulos, Grammati E. Pantziou
Energy-efficient multiple itinerary planning for mobile agents-based data aggregation in WSNs. Telecommun. Syst. 63 (4) (2016)
Alexandros Angelopoulos, Damianos Gavalas, Charalampos Konstantopoulos, Damianos Kypriadis, Grammati E. Pantziou
Incentivization schemes for vehicle allocation in one-way vehicle sharing systems. ISC2 (2016)
Alexandros Angelopoulos, Damianos Gavalas, Charalampos Konstantopoulos, Damianos Kypriadis, Grammati E. Pantziou
An Optimization Model for the Strategic Design of a Bicycle Sharing System: A Case Study in the City of Athens. PCI (2016)
Charalampos Konstantopoulos, Dimitrios Orfanos
A composite algorithm for the team orienteering problem with time windows. IISA (2016)
Aphrodite Veneti, Charalampos Konstantopoulos, Grammati E. Pantziou
Time-Dependent Bi-Objective Itinerary Planning Algorithm: Application in Sea Transportation. ATMOS (2016)
Charalampos Konstantopoulos, Grammati E. Pantziou, Ioannis E. Venetis, Damianos Gavalas
Efficient event handling in Wireless Sensor and Actor Networks: An on-line computation approach. J. Netw. Comput. Appl. 75 (2016)
Damianos Gavalas, Vlasios Kasapakis, Grammati E. Pantziou, Charalampos Konstantopoulos, Nikolaos Vathis, Konstantinos Mastakas, Christos D. Zaroliagis
Scenic Athens: A personalized scenic route planner for tourists. ISCC (2016)
Damianos Gavalas, Charalampos Konstantopoulos, Konstantinos Mastakas, Grammati E. Pantziou, Nikolaos Vathis
Efficient Metaheuristics for the Mixed Team Orienteering Problem with Time Windows. Algorithms 9 (1) (2016)
Athanasios Dasios, Damianos Gavalas, Grammati E. Pantziou, Charalampos Konstantopoulos
Hands-On Experiences in Deploying Cost-Effective Ambient-Assisted Living Systems. Sensors 15 (6) (2015)
Charalampos Konstantopoulos, Basilis Mamalis, Grammati E. Pantziou, Vasileios Thanasias
An image processing inspired mobile sink solution for energy efficient data gathering in wireless sensor networks. Wirel. Networks 21 (1) (2015)
Charalampos Konstantopoulos, Nikolaos Vathis, Grammati E. Pantziou, Damianos Gavalas
Efficient Delay-Constrained Data Collection in Wireless Sensor Networks Using Mobile Sinks. WMNC (2015)
Damianos Gavalas, Ioannis E. Venetis, Grammati E. Pantziou, Charalampos Konstantopoulos
An Iterated Local Search Approach for Multiple Itinerary Planning in Mobile Agent-Based Sensor Fusion. MSN (2015)
Damianos Gavalas, Charalampos Konstantopoulos, Konstantinos Mastakas, Grammati E. Pantziou, Nikolaos Vathis
Approximation algorithms for the arc orienteering problem. Inf. Process. Lett. 115 (2) (2015)
Athanasios Dasios, Damianos Gavalas, Grammati E. Pantziou, Charalampos Konstantopoulos
Wireless sensor network deployment for remote elderly care monitoring. PETRA (2015)
Aphrodite Veneti, Charalampos Konstantopoulos, Grammati E. Pantziou
An evolutionary approach to multi-objective ship weather routing. IISA (2015)
Damianos Gavalas, Charalampos Konstantopoulos, Grammati E. Pantziou
Design and Management of Vehicle Sharing Systems: A Survey of Algorithmic Approaches. CoRR (2015)
Damianos Gavalas, Vlasios Kasapakis, Charalampos Konstantopoulos, Grammati E. Pantziou, Nikolaos Vathis, Christos D. Zaroliagis
The eCOMPASS multimodal tourist tour planner. Expert Syst. Appl. 42 (21) (2015)
Damianos Gavalas, Charalampos Konstantopoulos, Konstantinos Mastakas, Grammati E. Pantziou, Nikolaos Vathis
Heuristics for the time dependent team orienteering problem: Application to tourist route planning. Comput. Oper. Res. 62 (2015)
Damianos Gavalas, Charalampos Konstantopoulos, Konstantinos Mastakas, Grammati E. Pantziou
Mobile recommender systems in tourism. J. Netw. Comput. Appl. 39 (2014)
Charalampos Konstantopoulos, Ioannis E. Venetis, Grammati E. Pantziou, Damianos Gavalas
An efficient event handling protocol for Wireless Sensor and Actor Networks. ISCC (2014)
Ioannis E. Venetis, Grammati E. Pantziou, Damianos Gavalas, Charalampos Konstantopoulos
Benchmarking mobile agent itinerary planning algorithms for data aggregation on WSNs. ICUFN (2014)
Charalampos Konstantopoulos, Grammati E. Pantziou, Nikolaos Vathis, Vasileios Nakos, Damianos Gavalas
Efficient mobile sink-based data gathering in wireless sensor networks with guaranteed delay. MOBIWAC (2014)
Damianos Gavalas, Charalampos Konstantopoulos, Konstantinos Mastakas, Grammati E. Pantziou
A survey on algorithmic approaches for solving tourist trip design problems. J. Heuristics 20 (3) (2014)
Damianos Gavalas, Vlasios Kasapakis, Charalampos Konstantopoulos, Grammati E. Pantziou, Nikolaos Vathis, Christos D. Zaroliagis
A personalized multimodal tourist tour planner. MUM (2014)
Damianos Gavalas, Charalampos Konstantopoulos, Konstantinos Mastakas, Grammati E. Pantziou, Nikolaos Vathis
Efficient Heuristics for the Time Dependent Team Orienteering Problem with Time Windows. ICAA (2014)
Damianos Gavalas, Vlasios Kasapakis, Charalampos Konstantopoulos, Konstantinos Mastakas, Grammati E. Pantziou
A survey on mobile tourism Recommender Systems. ICCIT (2013)
Damianos Gavalas, Charalampos Konstantopoulos, Konstantinos Mastakas, Grammati E. Pantziou, Yiannis Tasoulas
Cluster-Based Heuristics for the Team Orienteering Problem with Time Windows. SEA (2013)
Charalampos Konstantopoulos, Paolo Bellavista, Chi-Fu Huang, Damla Turgut
Special issue: Reactive wireless sensor networks. Comput. Commun. 36 (9) (2013)
Charalampos Konstantopoulos, Basilis Mamalis, Grammati E. Pantziou, Vasileios Thanasias
Watershed-Based Clustering for Energy Efficient Data Gathering in Wireless Sensor Networks with Mobile Collector. Euro-Par (2012)
Petros Belsis, Charalampos Konstantopoulos, Basilis Mamalis, Grammati E. Pantziou, Christos Skourlas
User-Directed, Cluster-Based Retrieval for Large Document Collections in Highly Parallel Environments. Int. J. Comput. Their Appl. 19 (1) (2012)
Charalampos Konstantopoulos, Grammati E. Pantziou, Damianos Gavalas, Aristides Mpitziopoulos, Basilis Mamalis
A Rendezvous-Based Approach Enabling Energy-Efficient Sensory Data Collection with Mobile Sinks. IEEE Trans. Parallel Distributed Syst. 23 (5) (2012)
Damianos Gavalas, Michael Kenteris, Charalampos Konstantopoulos, Grammati E. Pantziou
Web application for recommending personalised mobile tourist routes. IET Softw. 6 (4) (2012)
Damianos Gavalas, Michael Kenteris, Charalampos Konstantopoulos, Grammati E. Pantziou
Personalized routes for mobile tourism. WiMob (2011)
Damianos Gavalas, Grammati E. Pantziou, Charalampos Konstantopoulos
Mobility in Wireless Sensor Networks. Comput. J. 54 (12) (2011)
Damianos Gavalas, Grammati E. Pantziou, Charalampos Konstantopoulos, Basilis Mamalis
Clustering of Mobile Ad Hoc Networks: An Adaptive Broadcast Period Approach CoRR (2011)
Aristides Mpitziopoulos, Charalampos Konstantopoulos, Damianos Gavalas, Grammati E. Pantziou
A pervasive assistive environment for visually impaired people using wireless sensor network infrastructure. J. Netw. Comput. Appl. 34 (1) (2011)
Damianos Gavalas, Grammati E. Pantziou, Charalampos Konstantopoulos, Basilis Mamalis
Lowest-ID with Adaptive ID Reassignment: A Novel Mobile Ad-Hoc Networks Clustering Algorithm CoRR (2011)
Michael Kenteris, Damianos Gavalas, Grammati E. Pantziou, Charalampos Konstantopoulos
Near-optimal personalized daily itineraries for a mobile tourist guide. ISCC (2010)
Damianos Gavalas, Aristides Mpitziopoulos, Grammati E. Pantziou, Charalampos Konstantopoulos
An approach for near-optimal distributed data fusion in wireless sensor networks. Wirel. Networks 16 (5) (2010)
Aristides Mpitziopoulos, Damianos Gavalas, Charalampos Konstantopoulos, Grammati E. Pantziou
CBID: A Scalable Method for Distributed Data Aggregation in WSNs. Int. J. Distributed Sens. Networks 6 (1) (2010)
Charalampos Konstantopoulos, Aristides Mpitziopoulos, Damianos Gavalas, Grammati E. Pantziou
Effective Determination of Mobile Agent Itineraries for Data Aggregation on Sensor Networks. IEEE Trans. Knowl. Data Eng. 22 (12) (2010)
Aristides Mpitziopoulos, Damianos Gavalas, Charalampos Konstantopoulos, Grammati E. Pantziou
A survey on jamming attacks and countermeasures in WSNs. IEEE Commun. Surv. Tutorials 11 (4) (2009)
Charalampos Konstantopoulos, Basilis Mamalis, Grammati E. Pantziou, Damianos Gavalas
Efficient parallel Text Retrieval techniques on Bulk Synchronous Parallel (BSP)/Coarse Grained Multicomputers (CGM). J. Supercomput. 48 (3) (2009)
Aristides Mpitziopoulos, Damianos Gavalas, Charalampos Konstantopoulos, Grammati E. Pantziou
JAID: An algorithm for data fusion and jamming avoidance on distributed sensor networks. Pervasive Mob. Comput. 5 (2) (2009)
Grammati E. Pantziou, Petros Belsis, Damianos Gavalas, Charalampos Konstantopoulos, Basilis Mamalis
A scheme for on-site service provision in pervasive assistive environments. PETRA (2009)
Grammati E. Pantziou, Aristides Mpitziopoulos, Damianos Gavalas, Charalampos Konstantopoulos, Basilis Mamalis
Mobile Sinks for Information Retrieval from Cluster-Based WSN Islands. ADHOC-NOW (2009)
Aristides Mpitziopoulos, Damianos Gavalas, Charalampos Konstantopoulos, Grammati E. Pantziou
Exploiting the cloning capability of Mobile Agents for cost-effective data fusion in wireless sensor networks. ISCC (2008)
Damianos Gavalas, Grammati E. Pantziou, Charalampos Konstantopoulos, Basilis Mamalis
ABP: a low-cost, energy-efficient clustering algorithm for relatively static and quasi-static MANETs. Int. J. Sens. Networks 4 (4) (2008)
Aristides Mpitziopoulos, Charalampos Konstantopoulos, Damianos Gavalas, Grammati E. Pantziou
Hazard monitoring for visually impaired people enabled by wireless sensor networking technology. PETRA (2008)
Charalampos Konstantopoulos, Damianos Gavalas, Grammati E. Pantziou
Clustering in mobile ad hoc networks through neighborhood stability-based mobility prediction. Comput. Networks 52 (9) (2008)
Aristides Mpitziopoulos, Damianos Gavalas, Grammati E. Pantziou, Charalampos Konstantopoulos
Defending Wireless Sensor Networks from Jamming Attacks. PIMRC (2007)
Damianos Gavalas, Grammati E. Pantziou, Charalampos Konstantopoulos, Basilis Mamalis
LIDAR: a protocol for stable and energy-efficient clustering of ad-hoc multihop networks. Telecommun. Syst. 36 (1-3) (2007)
Charalampos Konstantopoulos, Christos Kaklamanis
Optimal hypercube simulation on the partitioned optical passive stars network. J. Supercomput. 42 (2) (2007)
Aristides Mpitziopoulos, Damianos Gavalas, Charalampos Konstantopoulos, Grammati E. Pantziou
Deriving Efficient Mobile Agent Routes in Wireless Sensor Networks with NOID Algorithm. PIMRC (2007)
Damianos Gavalas, Grammati E. Pantziou, Charalampos Konstantopoulos, Basilis Mamalis
Clustering of Mobile Ad Hoc Networks: An Adaptive Broadcast Period Approach. ICC (2006)
Charalampos Konstantopoulos, Damianos Gavalas, Grammati E. Pantziou
A Mobility Aware Technique for Clustering on Mobile Ad-Hoc Networks. ICDCN (2006)
Damianos Gavalas, Grammati E. Pantziou, Charalampos Konstantopoulos, Basilis Mamalis
A Method for Incremental Data Fusion in Distributed Sensor Networks. AIAI (2006)
Damianos Gavalas, Grammati E. Pantziou, Charalampos Konstantopoulos, Basilis Mamalis
Stable and Energy Efficient Clustering of Wireless Ad-Hoc Networks with LIDAR Algorithm. PWC (2006)
Damianos Gavalas, Grammati E. Pantziou, Charalampos Konstantopoulos, Basilis Mamalis
Efficient Active Clustering of Mobile Ad-Hoc Networks. Panhellenic Conference on Informatics (2005)
Damianos Gavalas, Grammati E. Pantziou, Basilis Mamalis, Charalampos Konstantopoulos
An Efficient and Scalable Clustering Algorithm for Wireless Ad Hoc Networks. IASTED PDCS (2005)
Damianos Gavalas, Charalampos Konstantopoulos, Basilis Mamalis, Grammati E. Pantziou
Efficient BSP/CGM Algorithms for Text Retrieval. IASTED PDCS (2005)
Christos Kaklamanis, Charalampos Konstantopoulos
Optimal Embedding of the Hypercube on Partitioned Optical Passive Stars Networks. Euro-Par (2005)
Andreas Svolos, Charalampos Konstantopoulos, Christos Kaklamanis
Efficient binary and grey level morphological operations on a massively parallel processor. Parallel Algorithms Appl. 19 (1) (2004)
Andreas Svolos, Charalampos Konstantopoulos, Christos Kaklamanis
A Parallel Solution in Texture Analysis Employing a Massively Parallel Processor (Research Note). Euro-Par (2002)
Andreas Svolos, Charalampos Konstantopoulos, Christos Kaklamanis
Efficient primitive binary morphological algorithms on a massively parallel processor. J. Electronic Imaging 10 (2) (2001)
Andreas Svolos, Charalampos Konstantopoulos, Christos Kaklamanis
A hypercube parallel algorithm in texture analysis. SIP (2001)
Charalampos Konstantopoulos, Andreas Svolos, Christos Kaklamanis
An efficient parallel algorithm for motion estimation in very low bit-rate video coding systems. Concurr. Pract. Exp. 12 (5) (2000)
Andreas Svolos, Charalampos Konstantopoulos, Christos Kaklamanis
fficient Binary Morphological Algorithms on a Massively Parallel Processor. IPDPS (2000)
Charalampos Konstantopoulos, Andreas Svolos, Christos Kaklamanis
Sliding-Window Compression on the Hypercube (Research Note). Euro-Par (2000)
Christos Kaklamanis, Charalampos Konstantopoulos, Andreas Svolos
A Hypercube Algorithm for Sliding Window Compression. Parallel Process. Lett. 10 (4) (2000)
Andreas I. Svolos, Charalampos Konstantopoulos, Christos Kaklamanis
Efficient shape transformations on a massively parallel processor. Electronic Imaging: Nonlinear Image Processing (1999)
Charalampos Konstantopoulos, Andreas Svolos, Christos Kaklamanis
Hierarchical Block Matching Motion Estimation on a Hypercube Multiprocessor. ACPC (1999)