Charalampos Alexopoulos

83 papers Journal 17Unranked 66

Year	Rank	Type	Title / Venue / Authors
2025	J	`jnl`	Editorial: Blockchain and tokenomics for sustainable development. Frontiers Blockchain Charalampos Alexopoulos, Enrico Ferro, Thomas J. Lampoltshammer
2025	—	`conf`	High-Accuracy AI in Fake News Detection: A Systematic Literature Review. EMCIS (2) Georgios Papageorgiou, Anastasios Koutsonis, Charalampos Alexopoulos, Euripidis N. Loukis
2025	J	`jnl`	Roundtrip feedback in open data portals: analysis of input and output channels. Online Inf. Rev. Abdul Aziz, Mohsan Ali, Javier Nogueras-Iso, Charalampos Alexopoulos, Francisco J. López-Pellicer
2025	—	`conf`	Talk to Open Data: Enabling User Interaction with Open Government Data Using LLMs, RAG and Smart Agent Technologies. EMCIS (2) Mohsan Ali, Maria Ioanna Maratsi, Zoi Lachana, Yannis Charalabidis, Charalampos Alexopoulos, Euripidis N. Loukis
2025	—	`conf`	Towards Open Archival Linked Data (ALD): The Case of Swedish National Archives. ESWC (2) Maria Ioanna Maratsi, David Haskiya, Mats Berggren, Yannis Charalabidis, Charalampos Alexopoulos
2024	J	`jnl`	A Framework for the Multi-Dimensional Assessment of Interoperability for Open Data Ecosystems Development. Inf. Polity Mohsan Ali, Georgios Papageorgiou, Abdul Aziz, Euripidis N. Loukis, Yannis Charalabidis, Charalampos Alexopoulos, Francisco J. López-Pellicer
2024	—	`conf`	A Proposed Methodology for Sub-Ontology Development in Comprehensive Scientific Investigation Methods and Tooling. MTSR Maria Ioanna Maratsi, Nina Giallousi, Charalampos Alexopoulos, Yannis Charalabidis
2024	J	`jnl`	BRYT: Automated keyword extraction for open datasets. Intell. Syst. Appl. Umair Ahmed, Charalampos Alexopoulos, Marco Piangerelli, Andrea Polini
2024	J	`jnl`	Do open government data (OGD) portals show signs of knowledge management (KM) practices?: an empirical investigation. Technol. Anal. Strateg. Manag. Abiola Paterne Chokki, Charalampos Alexopoulos, Ricardo Matheus, Stuti Saxena, Benoît Frénay, Benoît Vanderose
2024	J	`jnl`	Do personality traits influence the user's behavioral intention to adopt and use Open Government Data (OGD)? An empirical investigation. Telematics Informatics Nina Rizun, Charalampos Alexopoulos, Stuti Saxena, Fernando Kleiman, Ricardo Matheus
2024	—	`conf`	Employment of University Graduates in the Era of Digitalization and Artificial Intelligence: Challenges and Prospects. DG.O Nina Rizun, Halina Ryzhkova, Irena Pawlyszyn, Charalampos Alexopoulos
2024	—	`conf`	GlossAPI: Architecturing the Greek Data Pile for LLM development. PCI Mohsan Ali, Nina Giallousi, Alexandros Melidis, Charalampos Alexopoulos, Yannis Charalabidis
2024	J	`jnl`	Identification of Public Service Logic (PSL) and Public Service Motivation (PSM) elements in Open Government Data (OGD) initiatives. Electron. J. Inf. Syst. Dev. Ctries. Fredrick Ishengoma, Deo Shao, Raphael Gouvêa da Silva, Guilherme Costa Wiedenhöft, Ricardo Matheus, Charalampos Alexopoulos, Nina Rizun, Stuti Saxena
2024	—	`conf`	Investigating Actors and Infrastructure in Open Data Ecosystems (ODEs): A Conceptual Model. EMCIS (1) Mohsan Ali, Shefali Virkar, Charalampos Alexopoulos, Yannis Charalabidis
2024	—	`conf`	On the Semantic Analysis of Open (Government) Data Portals' Metadata Provision and Schema. ICEGOV Maria Ioanna Maratsi, Charalampos Alexopoulos, Yannis Charalabidis
2024	—	`conf`	Towards Cross-Domain Linking of Data: A Semantic Mapping of Cultural Heritage Ontologies. DG.O Maria Ioanna Maratsi, Umair Ahmed, Charalampos Alexopoulos, Yannis Charalabidis, Andrea Polini
2024	—	`conf`	Understanding the Ukrainian Migrants Challenges in the EU: A Topic Modeling Approach. DG.O Nina Khairova, Nina Rizun, Charalampos Alexopoulos, Magdalena Ciesielska, Arsenii Lukashevskyi, Ivan Redozub
2024	J	`jnl`	Value co-creation (VCC) and value co-destruction (VCD) via open government data (OGD): Empirical case of Tanzania. Electron. J. Inf. Syst. Dev. Ctries. Fredrick Ishengoma, Deo Shao, Raphael Gouvêa da Silva, Guilherme Costa Wiedenhöft, Charalampos Alexopoulos, Nina Rizun, Stuti Saxena
2024	J	`jnl`	Why do Open Government Data initiatives fail in developing countries? A root cause analysis of the most prevalent barriers and problems. Electron. J. Inf. Syst. Dev. Ctries. Charalampos Alexopoulos, Stuti Saxena, Marijn Janssen, Nina Rizun, Martin Lnenicka, Ricardo Matheus
2023	—	`conf`	A Categorization of Cross-Domain Semantic Interoperability Challenges for Open (Government) Data (short paper). EGOV-CeDEM-ePart-* Maria Ioanna Maratsi, Yannis Charalabidis, Charalampos Alexopoulos
2023	—	`conf`	A Chatbot Generator for Improved Digital Governance. EMCIS (1) Christos Bouras, Damianos Diasakos, Chrysostomos-Athanasios Katsigiannis, Vasileios Kokkinos, Apostolos Gkamas, Nikos I. Karacapilidis, Yannis Charalabidis, Zoi Lachana, Charalampos Alexopoulos, Theodoros Papadopoulos, Georgios Karamanolis, Michail Psalidas
2023	—	`conf`	A Structured Analysis of Domain-Specific Linked Open Vocabularies (LOV): Indicators for Interoperability and Reusability. EMCIS (1) Maria Ioanna Maratsi, Charalampos Alexopoulos, Yannis Charalabidis
2023	J	`jnl`	A functional and semantic analysis of artifact representation schemata in folklore museum websites. Int. J. Metadata Semant. Ontologies Maria Ioanna Maratsi, Zoi Lachana, Charalampos Alexopoulos, Yannis Charalabidis
2023	—	`conf`	An algorithmic method for business process reengineering and service automation in the public sector. ICEGOV Yannis Charalabidis, Zoi Lachana, Charalampos Alexopoulos, Michalis Avgerinos Loutsaris
2023	—	`conf`	Analyzing Open Government High Value Datasets: Availability, Publishers' Contribution and Technical Specifications. BIR Maria Ioanna Maratsi, Mohsan Ali, Charalampos Alexopoulos, Stuti Saxena, Nina Rizun, Yannis Charalabidis
2023	J	`jnl`	Assessing the failure of Open Government Data initiatives in Brazil. Electron. J. Inf. Syst. Dev. Ctries. Guilherme Costa Wiedenhöft, Charalampos Alexopoulos, Stuti Saxena, Nina Rizun, Ricardo Matheus
2023	J	`jnl`	Barriers towards Open Government Data Value Co-Creation: An empirical investigation. Electron. J. Inf. Syst. Dev. Ctries. Guilherme Costa Wiedenhöft, Ricardo Matheus, Stuti Saxena, Charalampos Alexopoulos
2023	—	`conf`	Benchmarking Open Government Data (OGD) Curriculum in Universities. I3E Georgios Papageorgiou, Ricardo Matheus, Charalampos Alexopoulos, Guilherme Wiedenhöft, Euripides N. Loukis, Nina Rizun, Yannis Charalabidis, Stuti Saxena
2023	—	`conf`	ChatGPT Application vis-a-vis Open Government Data (OGD): Capabilities, Public Values, Issues and a Research Agenda. EGOV Euripides N. Loukis, Stuti Saxena, Nina Rizun, Maria Ioanna Maratsi, Mohsan Ali, Charalampos Alexopoulos
2023	—	`conf`	Chatbot Technology Assessment: 40 Cases from Greece. EMCIS (1) Yannis Charalabidis, Thanos Anagnou, Charalampos Alexopoulos, Theodoros Papadopoulos, Zoi Lachana, Christos Bouras, Nikos I. Karacapilidis, Vasileios Kokkinos, Apostolos Gkamas
2023	—	`conf`	How do personality traits influence Open Government Data (OGD) adoption and usage? Investigating the indirect and moderating effects. DG.O Nina Rizun, Charalampos Alexopoulos, Stuti Saxena, Fernando Kleiman, Ricardo Matheus
2023	—	`conf`	Identification of High-Value Dataset determinants: is there a silver bullet for efficient sustainability-oriented data-driven development? DG.O Anastasija Nikiforova, Charalampos Alexopoulos, Nina Rizun, Magdalena Ciesielska
2023	—	`conf`	Information scent and open government data (OGD) engagement: research agenda. ICEGOV Stuti Saxena, Guilherme Wiedenhöft, Edimara M. Luciano, Charalampos Alexopoulos, Nina Rizun, Euripides N. Loukis, Ricardo Matheus
2023	—	`conf`	Moderating effects of gender, perceived importance and usage experience towards Open Government Data (OGD) adoption and usage. DG.O Charalampos Alexopoulos, Stuti Saxena
2023	—	`conf`	Open Government Data in Educational Programs Curriculum: Current State and Prospects. BIR Georgios Papageorgiou, Euripidis N. Loukis, Georgios Pappas, Nina Rizun, Stuti Saxena, Yannis Charalabidis, Charalampos Alexopoulos
2023	—	`conf`	Semantic Interoperability for Legal Information: Mapping the European Legislation Identifier (ELI) and Akoma Ntoso (AKN) Ontologies. ICEGOV Michalis Avgerinos Loutsaris, Charalampos Alexopoulos, Maria Ioanna Maratsi, Yannis Charalabidis
2023	—	`conf`	Team Radiant or Dire? Comparing the SVM and k-NN Classifiers upon a DotA2 Matches Dataset. PCI Maria Ioanna Maratsi, Charalampos Alexopoulos, Yannis Charalabidis
2023	—	`conf`	Towards High-Value Datasets Determination for Data-Driven Development: A Systematic Literature Review. EGOV Anastasija Nikiforova, Nina Rizun, Magdalena Ciesielska, Charalampos Alexopoulos, Andrea Miletic
2023	J	`jnl`	Towards High-Value Datasets determination for data-driven development: a systematic literature review. CoRR Anastasija Nikiforova, Nina Rizun, Magdalena Ciesielska, Charalampos Alexopoulos, Andrea Miletic
2023	—	`conf`	What's in a Brand? Place Branding and Migration in Smart Cities. I3E Ricardo Matheus, Naveen Naval, Nina Rizun, Charalampos Alexopoulos, Raphael Gouvêa da Silva, Guilherme Wiedenhöft, Stuti Saxena
2022	—	`conf`	A Comprehensive Framework for Measuring Governments' Digital Initiatives Including Open Data. EMCIS Mohsan Ali, Ioannis Zlatinis, Charalampos Alexopoulos, Yannis Charalabidis, Loukis Euripides
2022	—	`conf`	A comprehensive review of open data platforms, prevalent technologies, and functionalities. ICEGOV Mohsan Ali, Charalampos Alexopoulos, Yannis Charalabidis
2022	J	`jnl`	A user-centred analysis of decision support requirements in legal informatics. Gov. Inf. Q. Shefali Virkar, Charalampos Alexopoulos, Sofia Tsekeridou, Anna-Sophie Novak
2022	—	`conf`	Analysis of Reviews on Greek Municipalities to Improve Public Service Delivery and Citizen Satisfaction: A Tool for Co-creation and Co-design. PCI Mohsan Ali, Maria Ioanna Maratsi, Loukis Euripides, Charalampos Alexopoulos, Yannis Charalabidis
2022	—	`conf`	Assessing Information and System Quality of Open Government Data Portals in Croatia. ICEGOV Karlo Kevic, Charalampos Alexopoulos, Ana Kuvezdic Divjak
2022	—	`conf`	Concept for an Open Data Ecosystem to Build a Powerful Data Environment. EMCIS Larisa Hrustek, Renata Mekovec, Charalampos Alexopoulos
2022	—	`conf`	Ethical and Legal Aspects of Digital Forensics Algorithms: The Case of Digital Evidence Acquisition. ICEGOV Maria Ioanna Maratsi, Oliver Popov, Charalampos Alexopoulos, Yannis Charalabidis
2022	—	`conf`	Towards Perso-Arabic Urdu Language Hate Detection Using Machine Learning: A Comparative Study Based on a Large Dataset and Time-Complexity. PCI Mohsan Ali, Ali Muhammad, Muhammad Asad, Makhdoom Sajawal, Charalampos Alexopoulos, Yannis Charalabidis
2021	—	`conf`	A Methodology for Evaluating Advanced Legal Data Infrastructures. ICEGOV Shefali Virkar, Euripidis N. Loukis, Charalampos Alexopoulos
2021	—	`conf`	Clustering legal artifacts using text mining. ICEGOV Zoi Lachana, Michalis Avgerinos Loutsaris, Charalampos Alexopoulos, Yannis Charalabidis
2021	—	`conf`	Evaluating Second Generation Cross-Country Open Legal Data Infrastructures Using Value Models. ePart Charalampos Alexopoulos, Euripides N. Loukis, Shefali Virkar
2021	—	`conf`	Legal Text Processing: Combing two legal ontological approaches through text mining. DG.O Michalis Avgerinos Loutsaris, Zoi Lachana, Charalampos Alexopoulos, Yannis Charalabidis
2021	—	`conf`	Towards Smart Cities 4.0: Digital Participation in Smart Cities Solutions and the Use of Disruptive Technologies. EMCIS Charalampos Alexopoulos, Panagiotis Keramidis, Gabriela Viale Pereira, Yannis Charalabidis
2020	—	`conf`	Analysing Legal Information Requirements for Public Policy Making. ePart Charalampos Alexopoulos, Shefali Virkar, Michalis Avgerinos Loutsaris, Anna-Sophie Novak, Euripidis N. Loukis
2020	—	`conf`	Architecting an innovative big open legal data analytics, search and retrieval platform. ICEGOV Stefania Stavropoulou, Ilias Romas, Sofia Tsekeridou, Michalis Avgerinos Loutsaris, Thomas J. Lampoltshammer, Lörinc Thurnay, Shefali Virkar, Günther Schefbeck, Nektarios Kyriakou, Zoi Lachana, Charalampos Alexopoulos, Yannis Charalabidis
2020	—	`conf`	Assessing the quality of e-Government services for entrepreneurship: a comparative study in Russia's regions. ICEGOV Alexander M. Pakhalov, Natalia A. Rozhkova, Charalampos Alexopoulos
2020	J	`jnl`	Automated Analysis and Interrelation of Legal Elements Based on Text Mining. Int. J. E Serv. Mob. Appl. Zoi Lachana, Michalis Avgerinos Loutsaris, Charalampos Alexopoulos, Yannis Charalabidis
2020	—	`conf`	Blockchain in Digital Government: Research Needs Identification. EMCIS Demetrios Sarantis, Charalampos Alexopoulos, Yannis Charalabidis, Zoi Lachana, Michalis Avgerinos Loutsaris
2020	—	`conf`	Convergence and Divergence Between Municipalities and Citizens about Smart City Actions' Priorities. DG.O Yannis Charalabidis, Euripidis N. Loukis, Charalampos Alexopoulos, Nikolaos Vogiatzis, Dimitrios E. Kolokotronis
2020	—	`conf`	Gamification in Public Service Provisioning: Investigation of Research Needs. DG.O Alexander Ronzhyn, Maria A. Wimmer, Gabriela Viale Pereira, Charalampos Alexopoulos
2020	—	`conf`	Towards an Open Data Research Ecosystem in Croatia. EGOV-CeDEM-ePart-* Bastiaan van Loenen, Frederika Welle Donker, Anneke Zuiderwijk, Drazen Tutic, Charalampos Alexopoulos
2020	—	`conf`	User-centric decision support system design in legal informatics: a typology of users. ICEGOV Shefali Virkar, Charalampos Alexopoulos, Stefania Stavropoulou, Sofia Tsekeridou, Anna-Sophie Novak
2019	—	`conf`	A Taxonomy of Smart Cities Initiatives. ICEGOV Charalampos Alexopoulos, Gabriela Viale Pereira, Yannis Charalabidis, Lorenzo Madrid
2019	—	`conf`	Benefits and Obstacles of Blockchain Applications in e-Government. HICSS Charalampos Alexopoulos, Yannis Charalabidis, Aggeliki Androutsopoulou, Michalis Avgerinos Loutsaris, Zoi Lachana
2019	—	`conf`	How Machine Learning is Changing e-Government. ICEGOV Charalampos Alexopoulos, Zoi Lachana, Aggeliki Androutsopoulou, Vasiliki Diamantopoulou, Yannis Charalabidis, Michalis Avgerinos Loutsaris
2019	—	`conf`	Introduction to the Minitrack on Data-driven Government: Creating value from Big and Open Linked Data. HICSS Marijn Janssen, Judie Attard, Charalampos Alexopoulos
2019	—	`conf`	The Evolving e-Governance Curriculum: A Worldwide mapping of Education Programs. ICEGOV Demetrios Sarantis, Soumaya I. Ben Dhaou, Charalampos Alexopoulos, Alexander Ronzhyn, Gabriela Viale Pereira, Yannis Charalabidis
2019	—	`conf`	The Three Generations of Electronic Government: From Service Provision to Open Data and to Policy Analytics. EGOV Yannis Charalabidis, Euripidis N. Loukis, Charalampos Alexopoulos, Zoi Lachana
2019	—	`conf`	Use Case Scenarios on Legal Text Mining. ICEGOV Yannis Charalabidis, Michalis Avgerinos Loutsaris, Shefali Virkar, Charalampos Alexopoulos, Anna-Sophie Novak, Zoi Lachana
2019	—	`conf`	Using Disruptive Technologies in Government: Identification of Research and Training Needs. EGOV Alexander Ronzhyn, Maria A. Wimmer, Vera Spitzer, Gabriela Viale Pereira, Charalampos Alexopoulos
2018	—	`conf`	"Peri Nomou" System: Automated Codification and Interrelation of Legal Elements Based on Text Mining. MCIS Zoi Lachana, Michalis Avgerinos Loutsaris, Charalampos Alexopoulos, Yannis Charalabidis
2018	—	`conf`	A Methodology for Economic Crisis Policy Analytics. MCIS Euripidis N. Loukis, Spyros Arvanitis, Charalampos Alexopoulos
2018	—	`conf`	A Taxonomy for Analysing Smart Cities Developments in Greece. ICEGOV Charalampos Alexopoulos, Yannis Charalabidis, Nikolaos Vogiatzis, Dimitrios E. Kolokotronis
2018	—	`conf`	Scientific foundations training and entrepreneurship activities in the domain of ICT-enabled governance. DG.O Gabriela Viale Pereira, Yannis Charalabidis, Charalampos Alexopoulos, Francesco Mureddu, Peter Parycek, Alexander Ronzhyn, Dimitris Sarantis, Leif Skiftenes Flak, Maria A. Wimmer
2017	—	`conf`	Tracking the Evolution of OGD Portals: A Maturity Model. EGOV Charalampos Alexopoulos, Vasiliki Diamantopoulou, Yannis Charalabidis
2016	J	`jnl`	A methodology for determining the value generation mechanism and the improvement priorities of open government data systems. Comput. Sci. Inf. Syst. Charalampos Alexopoulos, Euripidis N. Loukis, Yannis Charalabidis
2016	J	`jnl`	A taxonomy of open government data research areas and topics. J. Organ. Comput. Electron. Commer. Yannis Charalabidis, Charalampos Alexopoulos, Euripidis N. Loukis
2016	—	`conf`	An Open Data and Open Services Repository for Supporting Citizen-Driven Application Development for Governance. HICSS Yannis Charalabidis, Charalampos Alexopoulos, Vasiliki Diamantopoulou, Aggeliki Androutsopoulou
2014	—	`conf`	Designing a Second Generation of Open Data Platforms: Integrating Open Data and Social Media. EGOV Charalampos Alexopoulos, Anneke Zuiderwijk, Yannis Charalabidis, Euripidis N. Loukis, Marijn Janssen
2014	—	`conf`	Evaluating Second Generation Open Government Data Infrastructures Using Value Models. HICSS Yannis Charalabidis, Euripidis N. Loukis, Charalampos Alexopoulos
2013	—	`conf`	Open data movement in Greece: a case study on open government data sources. Panhellenic Conference on Informatics Charalampos Alexopoulos, Lefkothea Spiliotopoulou, Yannis Charalabidis
2012	—	`conf`	A Classification of Future Internet Enterprise Systems Projects. I-ESA Yannis Charalabidis, Fenareti Lampathaki, Charalampos Alexopoulos, Panagiotis Kokkinakos, Sotirios Koussouris
2012	—	`conf`	A Methodology for Evaluating PSI E-infrastructures Based on Multiple Value Models. Panhellenic Conference on Informatics Charalampos Alexopoulos, Euripidis N. Loukis, Yannis Charalabidis, I. Tagkopoulos