Christos Tjortjis

114 papers B 3C 11Misc 5Journal 53Unranked 40
YearRankTypeTitle / Venue / Authors
2026 J jnl
DynaHash: An efficient blocking structure for streaming record linkage.
Inf. Syst.
Dimitrios Karapiperis, Christos Tjortjis, Vassilios S. Verykios
2025 J jnl
A Data Mining Approach to Identify NBA Player Quarter-by-Quarter Performance Patterns.
Big Data Cogn. Comput.
Dimitrios Iatropoulos, Vangelis Sarlis, Christos Tjortjis
2025 J jnl
Adaptive sliding window normalization.
Inf. Syst.
George Papageorgiou, Christos Tjortjis
2025 J jnl
An innovative method for accurate NBA player performance forecasting and line-up optimization in daily fantasy sports.
Int. J. Data Sci. Anal.
George Papageorgiou, Vangelis Sarlis, Christos Tjortjis
2025 J jnl
Data Organisation for Efficient Pattern Retrieval: Indexing, Storage, and Access Structures.
Big Data Cogn. Comput.
Paraskevas Koukaras, Christos Tjortjis
2025 J jnl
EV charging forecasting exploiting traffic, weather and user information.
Int. J. Mach. Learn. Cybern.
Aristeidis Mystakidis, Nikolaos Tsalikidis, Paraskevas Koukaras, Georgios Skaltsis, Dimosthenis Ioannidis, Christos Tjortjis, Dimitrios Tzovaras
2025 J jnl
Evaluating Faithfulness in Agentic RAG Systems for e-Governance Applications Using LLM-Based Judging Frameworks.
Big Data Cogn. Comput.
George Papageorgiou, Vangelis Sarlis, Manolis Maragoudakis, Ioannis Magnisalis, Christos Tjortjis
2025 J jnl
Identifying Methodological Language in Psychology Abstracts: A Machine Learning Approach Using NLP and Embedding-Based Clustering.
Big Data Cogn. Comput.
Konstantinos G. Stathakis, George Papageorgiou, Christos Tjortjis
2025 C conf
LSBlock: A Hybrid Blocking System Combining Lexical and Semantic Similarity Search for Record Linkage.
ADBIS
Dimitrios Karapiperis, Christos Tjortjis, Vassilios S. Verykios
2025 Misc conf
MOMENT: A Multi-Objective Mitigation Engine using NSGA-II Techniques for Cyber Threat Response.
CSR
Konstantina Milousi, Nikolaos Vakakis, Aristeidis Mystakidis, Mariana S. Mazi, Antonis Voulgaridis, Christos Tjortjis, Konstantinos Votis, Dimitrios Tzovaras
2025 J jnl
Sports Analytics for Evaluating Injury Impact on NBA Performance.
Inf.
Vangelis Sarlis, George Papageorgiou, Christos Tjortjis
2025 J jnl
Traffic congestion prediction and missing data: a classification approach using weather information.
Int. J. Data Sci. Anal.
Aristeidis Mystakidis, Christos Tjortjis
2025 J jnl
Using Machine Learning on Macroeconomic, Technical, and Sentiment Indicators for Stock Market Forecasting.
Inf.
Michalis Patsiarikas, George Papageorgiou, Christos Tjortjis
2024 J jnl
A Data Science and Sports Analytics Approach to Decode Clutch Dynamics in the Last Minutes of NBA Games.
Mach. Learn. Knowl. Extr.
Vangelis Sarlis, Dimitrios Gerakas, Christos Tjortjis
2024 J jnl
A Suite of Efficient Randomized Algorithms for Streaming Record Linkage.
IEEE Trans. Knowl. Data Eng.
Dimitrios Karapiperis, Christos Tjortjis, Vassilios S. Verykios
2024 J jnl
Diverse Machine Learning for Forecasting Goal-Scoring Likelihood in Elite Football Leagues.
Mach. Learn. Knowl. Extr.
Christina Markopoulou, George Papageorgiou, Christos Tjortjis
2024 J jnl
Energy load forecasting: one-step ahead hybrid model utilizing ensembling.
Computing
Nikos Tsalikidis, Aristeidis Mystakidis, Christos Tjortjis, Paraskevas Koukaras, Dimosthenis Ioannidis
2024 J jnl
Evaluating the effectiveness of machine learning models for performance forecasting in basketball: a comparative study.
Knowl. Inf. Syst.
George Papageorgiou, Vangelis Sarlis, Christos Tjortjis
2024 J jnl
Injury Patterns and Impact on Performance in the NBA League Using Sports Analytics.
Comput.
Vangelis Sarlis, George Papageorgiou, Christos Tjortjis
2024 — conf
Integration of Security in the DevOps Methodology.
IISA
Emmanouil Sermpezis, Dimitrios Karapiperis, Christos Tjortjis
2024 J jnl
Investigating the Key Aspects of a Smart City through Topic Modeling and Thematic Analysis.
Future Internet
Anestis Kousis, Christos Tjortjis
2024 J jnl
Leveraging Sports Analytics and Association Rule Mining to Uncover Recovery and Economic Impacts in NBA Basketball.
Data
Vangelis Sarlis, George Papageorgiou, Christos Tjortjis
2024 J jnl
Sports Analytics: Data Mining to Uncover NBA Player Position, Age, and Injury Impact on Performance and Economics.
Inf.
Vangelis Sarlis, Christos Tjortjis
2024 J jnl
Strategic Machine Learning Optimization for Cardiovascular Disease Prediction and High-Risk Patient Identification.
Algorithms
Konstantina-Vasiliki Tompra, George Papageorgiou, Christos Tjortjis
2024 J jnl
Text Analytics on YouTube Comments for Food Products.
Inf.
Maria Tsiourlini, Katerina Tzafilkou, Dimitrios Karapiperis, Christos Tjortjis
2024 J jnl
Unsupervised Learning in NBA Injury Recovery: Advanced Data Mining to Decode Recovery Durations and Economic Impacts.
Inf.
George Papageorgiou, Vangelis Sarlis, Christos Tjortjis
2023 — conf
A Behavioural Compact Model for Programmable Neuromorphic ReRAM.
NANOARCH
Mohamad Moner Al Chawa, Ronald Tetzlaff, Christos Tjortjis, Stavros G. Stavrinides, Carol de Benito, Rodrigo Picos
2023 — conf
A Machine Learning Approach for Effective Software Defect Detection.
IISA
Maria Vasileiou, George Papageorgiou, Christos Tjortjis
2023 J jnl
A Randomized Blocking Structure for Streaming Record Linkage.
Proc. VLDB Endow.
Dimitrios Karapiperis, Christos Tjortjis, Vassilios S. Verykios
2023 J jnl
A Tri-Model Prediction Approach for COVID-19 ICU Bed Occupancy: A Case Study.
Algorithms
Nikolaos Stasinos, Anestis Kousis, Vangelis Sarlis, Aristeidis Mystakidis, Dimitris Rousidis, Paraskevas Koukaras, Ioannis Kotsiopoulos, Christos Tjortjis
2023 — conf
Data Mining for Smart Cities: Traffic Congestion Prediction.
IISA
Aristeidis Mystakidis, Olga Geromichalou, Christos Tjortjis
2023 J jnl
Energy generation forecasting: elevating performance with machine and deep learning.
Computing
Aristeidis Mystakidis, Evangelia Ntozi, Konstantinos Afentoulis, Paraskevas Koukaras, Paschalis Gkaidatzis, Dimosthenis Ioannidis, Christos Tjortjis, Dimitrios Tzovaras
2023 — conf
Exploiting Optical Nonlinear Temporal Coupling for Implementing Physical Unclonable Functions.
WF-IoT
Stavros G. Stavrinides, Lydia Bush-Espinosa, Carol de Benito, Nikolaos Athanasios Anagnostopoulos, Tolga Arul, Stefan Katzenbeisser, Christos Tjortjis, Mohamad Moner Al Chawa, Rodrigo Picos
2023 — conf
Fake News Detection Utilizing Textual Cues.
AIAI (1)
Vasiliki Chouliara, Paraskevas Koukaras, Christos Tjortjis
2023 — conf
Forecasting Goal Performance for Top League Football Players: A Comparative Study.
AIAI (2)
Nikolaos Giannakoulas, George Papageorgiou, Christos Tjortjis
2023 — conf
Sentiment Analysis on English and Greek Twitter Data Regarding Vaccinations.
IISA
Chrysoula Dontaki, Paraskevas Koukaras, Christos Tjortjis
2023 J jnl
SmartBuild RecSys: A Recommendation System Based on the Smart Readiness Indicator for Energy Efficiency in Buildings.
Algorithms
Muhammad Talha Siddique, Paraskevas Koukaras, Dimosthenis Ioannidis, Christos Tjortjis
2023 J jnl
Sports Analytics and Text Mining NBA Data to Assess Recovery from Injuries and Their Economic Impact.
Comput.
Vangelis Sarlis, George Papageorgiou, Christos Tjortjis
2023 J jnl
Unraveling Microblog Sentiment Dynamics: A Twitter Public Attitudes Analysis towards COVID-19 Cases and Deaths.
Informatics
Paraskevas Koukaras, Dimitrios Rousidis, Christos Tjortjis
2023 — conf
YouTube Sentiment Analysis on Healthcare Product Campaigns: Combining Lexicons and Machine Learning Models.
IISA
Panagiota Anastasiou, Katerina Tzafilkou, Dimitrios Karapiperis, Christos Tjortjis
2022 J jnl
An interdisciplinary approach on efficient virtual microgrid to virtual microgrid energy balancing incorporating data preprocessing techniques.
Computing
Paraskevas Koukaras, Christos Tjortjis, Paschalis Gkaidatzis, Napoleon A. Bezas, Dimosthenis Ioannidis, Dimitrios Tzovaras
2022 — conf
Anomaly Detection in Small-Scale Industrial and Household Appliances.
AIAI (Workshops)
Niccolò Zangrando, Sergio Herrera, Paraskevas Koukaras, Asimina Dimara, Piero Fraternali, Stelios Krinidis, Dimosthenis Ioannidis, Christos Tjortjis, Christos-Nikolaos Anagnostopoulos, Dimitrios Tzovaras
2022 J jnl
Exploiting Textual Information for Fake News Detection.
Int. J. Neural Syst.
Dimitrios Panagiotis Kasseropoulos, Paraskevas Koukaras, Christos Tjortjis
2022 J jnl
Mining association rules from COVID-19 related twitter data to discover word patterns, topics and inferences.
Inf. Syst.
Paraskevas Koukaras, Christos Tjortjis, Dimitrios Rousidis
2022 — conf
Proactive Buildings: A Prescriptive Maintenance Approach.
AIAI (Workshops)
Paraskevas Koukaras, Asimina Dimara, Sergio Herrera, Niccolò Zangrando, Stelios Krinidis, Dimosthenis Ioannidis, Piero Fraternali, Christos Tjortjis, Christos-Nikolaos Anagnostopoulos, Dimitrios Tzovaras
2022 — conf
Sentiment Analysis on COVID-19 Twitter Data: A Sentiment Timeline.
AIAI (2)
Makrina Karagkiozidou, Paraskevas Koukaras, Christos Tjortjis
2022 — ch.
Smart Healthcare Support Using Data Mining and Machine Learning.
IoT and WSN based Smart Cities
Theodora Chatzinikolaou, Eleni Vogiatzi, Anestis Kousis, Christos Tjortjis
2022 — conf
Social Media Sentiment Analysis Related to COVID-19 Vaccines: Case Studies in English and Greek Language.
AIAI (2)
Evridiki Kapoteli, Paraskevas Koukaras, Christos Tjortjis
2021 J jnl
A Data Science approach analysing the Impact of Injuries on Basketball Player and Team Performance.
Inf. Syst.
Vangelis Sarlis, Vasilis Chatziilias, Christos Tjortjis, Dimitris Mandalidis
2021 — conf
A Methodology for Stock Movement Prediction Using Sentiment Analysis on Twitter and StockTwits Data.
SEEDA-CECNSM
Christina Nousi, Christos Tjortjis
2021 J jnl
A methodology using classification for traffic prediction: Featuring the impact of COVID-19.
Integr. Comput. Aided Eng.
Stergios Liapis, Konstantinos Christantonis, Victor Chazan Pantzalis, Anastassios Manos, Despina Elizabeth Filippidou, Christos Tjortjis
2021 Misc conf
An Approach Utilizing Linguistic Features for Fake News Detection.
AIAI
Dimitrios Panagiotis Kasseropoulos, Christos Tjortjis
2021 J jnl
Data Mining Algorithms for Smart Cities: A Bibliometric Analysis.
Algorithms
Anestis Kousis, Christos Tjortjis
2021 J jnl
Introducing a novel approach in one-step ahead energy load forecasting.
Sustain. Comput. Informatics Syst.
Paraskevas Koukaras, Napoleon A. Bezas, Paschalis Gkaidatzis, Dimosthenis Ioannidis, Dimitrios Tzovaras, Christos Tjortjis
2021 J jnl
Introducing a novel bi-functional method for exploiting sentiment in complex information networks.
Int. J. Metadata Semant. Ontologies
Paraskevas Koukaras, Dimitrios Rousidis, Christos Tjortjis
2021 Misc conf
Predicting CO
AIAI
Alexia Avramidou, Christos Tjortjis
2021 C conf
Predicting Stock Market Movements with Social Media and Machine Learning.
WEBIST
Paraskevas Koukaras, Vasiliki Tsichli, Christos Tjortjis
2020 — conf
An Introduction to Information Network Modeling Capabilities, Utilizing Graphs.
MTSR
Paraskevas Koukaras, Dimitrios Rousidis, Christos Tjortjis
2020 — conf
Big Data Mining for Smart Cities: Predicting Traffic Congestion using Classification.
IISA
Aristeidis Mystakidis, Christos Tjortjis
2020 — conf
Examination of NoSQL Transition and Data Mining Capabilities.
MTSR
Dimitrios Rousidis, Paraskevas Koukaras, Christos Tjortjis
2020 — ch.
Forecasting and Prevention Mechanisms Using Social Media in Health Care.
Advanced Computational Intelligence in Healthcare (7)
Paraskevas Koukaras, Dimitrios Rousidis, Christos Tjortjis
2020 J jnl
Mining Association Rules from Code (MARC) to support legacy software management.
Softw. Qual. J.
Christos Tjortjis
2020 — conf
Promoting Diversity in Content Based Recommendation Using Feature Weighting and LSH.
AIAI (1)
Dimosthenis Beleveslis, Christos Tjortjis
2020 J jnl
Social Media Types: introducing a data driven taxonomy.
Computing
Paraskevas Koukaras, Christos Tjortjis, Dimitrios Rousidis
2020 J jnl
Social media prediction: a literature review.
Multim. Tools Appl.
Dimitrios Rousidis, Paraskevas Koukaras, Christos Tjortjis
2020 — conf
Sports Analytics for Football League Table and Player Performance Prediction.
IISA
Victor Chazan Pantzalis, Christos Tjortjis
2020 J jnl
Sports analytics - Evaluation of basketball players and team performance.
Inf. Syst.
Vangelis Sarlis, Christos Tjortjis
2020 — conf
Using Classification for Traffic Prediction in Smart Cities.
AIAI (1)
Konstantinos Christantonis, Christos Tjortjis, Anastassios Manos, Despina Elizabeth Filippidou, Eleni Mougiakou, Evangelos Christelis
2020 — conf
Using Twitter to Predict Chart Position for Songs.
AIAI (1)
Eleana Tsiara, Christos Tjortjis
2019 — conf
A Hybrid Method for Sentiment Analysis of Election Related Tweets.
SEEDA-CECNSM
Dimosthenis Beleveslis, Christos Tjortjis, Dimitris Psaradelis, Dimitris Nikoglou
2019 J jnl
A survey on association rules mining using heuristics.
WIREs Data Mining Knowl. Discov.
Seyed Mohssen Ghafari, Christos Tjortjis
2019 — conf
Data Mining for Smart Cities: Predicting Electricity Consumption by Classification.
IISA
Konstantinos Christantonis, Christos Tjortjis
2019 — conf
Mining Traffic Accident Data for Hazard Causality Analysis.
SEEDA-CECNSM
Dimitrios Tasios, Christos Tjortjis, Andreas Gregoriades
2019 Misc conf
MuSIF: A Product Recommendation System Based on Multi-source Implicit Feedback.
AIAI
Iotaomicronannis Schoinas, Christos Tjortjis
2019 — conf
Sports Analytics algorithms for performance prediction.
IISA
Konstantinos Apostolou, Christos Tjortjis
2018 — conf
A Method for Predicting the Winner of the USA Presidential Elections using Data extracted from Twitter.
SEEDA-CECNSM
Lazaros Oikonomou, Christos Tjortjis
2018 J jnl
AI in Greece: The Case of Research on Linked Geospa al Data.
AI Mag.
Manolis Koubarakis, George A. Vouros, Georgios Chalkiadakis, Vassilis P. Plagianakos, Christos Tjortjis, Ergina Kavallieratou, Dimitris Vrakas, Nikolaos Mavridis, Georgios Petasis, Konstantinos Blekas, Anastasia Krithara
2017 C conf
ARMICA-Improved: A New Approach for Association Rule Mining.
KSEM
Shahpar Yakhchi, Seyed Mohssen Ghafari, Christos Tjortjis, Mahdi Fazeli
2017 C conf
Short-Term Traffic Prediction under Both Typical and Atypical Traffic Conditions using a Pattern Transition Model.
VEHITS
Traianos-Ioannis Theodorou, Athanasios Salamanis, Dionysios D. Kehagias, Dimitrios Tzovaras, Christos Tjortjis
2017 J jnl
T3C: improving a decision tree classification algorithm's interval splits on continuous attributes.
Adv. Data Anal. Classif.
Panagiotis Tzirakis, Christos Tjortjis
2017 C conf
The 50/50 Recommender: A Method Incorporating Personality into Movie Recommender Systems.
EANN
Orestis Nalmpantis, Christos Tjortjis
2016 Misc conf
Association Rules Mining by Improving the Imperialism Competitive Algorithm (ARMICA).
AIAI
Seyed Mohssen Ghafari, Christos Tjortjis
2016 — conf
Clustering Software Metric Values Extracted from C# Code for Maintainability Assessment.
SETN
Shumail Arshad, Christos Tjortjis
2014 — conf
Combining Clustering and Classification for Software Quality Evaluation.
SETN
Diomidis Papas, Christos Tjortjis
2013 J jnl
Evaluating data mining algorithms using molecular dynamics trajectories.
Int. J. Data Min. Bioinform.
Vasileios A. Tatsis, Christos Tjortjis, Panagiotis Tzirakis
2013 B conf
Personalised Fuzzy Recommendation for High Involvement Products.
SMC
Vassilis C. Gerogiannis, Anthony Karageorgos, Liwei Liu, Christos Tjortjis
2011 J jnl
K-attractors: a Partitional Clustering Algorithm for Numeric Data Analysis.
Appl. Artif. Intell.
Yiannis Kanellopoulos, Panagiotis Antonellis, Christos Tjortjis, Christos Makris, Nikos Tsirakis
2011 — conf
Welcome from the Industrial Track Chair and the Industrial Forum Chair.
CSMR
Christos Tjortjis, Christian Zillmann
2010 — conf
Agent-Based Digital Networking in Furniture Manufacturing Enterprises.
NDT (2)
Anthony Karageorgos, Dimitra Avramouli, Christos Tjortjis, Georgios Ntalos
2010 J jnl
Code Quality Evaluation Methodology Using The ISO/IEC 9126 Standard
CoRR
Yiannis Kanellopoulos, Panagiotis Antonellis, Dimitris Antoniou, Christos Makris, Evangelos Theodoridis, Christos Tjortjis, Nikos Tsirakis
2010 C conf
Towards Agent-Based 'Smart' Collaboration in Enterprise Networks.
WETICE
Anthony Karageorgos, Anthony Avramouli, Georgios Ntalos, Christos Tjortjis, Konstantina Vassilopoulou
2009 — conf
3rd International Workshop on Software Quality and Maintainability.
CSMR
Christos Tjortjis, Joost Visser
2009 J jnl
A GO-driven semantic similarity measure for quantifying the biological relatedness of gene products.
Intell. Decis. Technol.
Spiridon C. Denaxas, Christos Tjortjis
2009 — conf
Code4Thought Project: Employing the ISO/IEC-9126 Standard for Software Engineering-Product Quality Assessment.
CSMR
Panagiotis Antonellis, Dimitris Antoniou, Yiannis Kanellopoulos, Christos Makris, Christos Tjortjis, Vangelis Theodoridis, Nikos Tsirakis
2009 J jnl
Comparing data mining methods with logistic regression in childhood obesity prediction.
Inf. Syst. Frontiers
Shaoyan Zhang, Christos Tjortjis, Xiao-Jun Zeng, Hong Qiao, Iain E. Buchan, John A. Keane
2009 J jnl
Special issue on the 12th conference on software maintenance and reengineering (CSMR 2008).
J. Softw. Maintenance Res. Pract.
Kostas Kontogiannis, Christos Tjortjis, Andreas Winter
2008 — conf
Clustering for Monitoring Software Systems Maintainability Evolution.
SQM@CSMR
Panagiotis Antonellis, Dimitris Antoniou, Yiannis Kanellopoulos, Christos Makris, Evangelos Theodoridis, Christos Tjortjis, Nikos Tsirakis
2008 — conf
Interpretation of Source Code Clusters in Terms of the ISO/IEC-9126 Maintainability Characteristics.
CSMR
Yiannis Kanellopoulos, Christos Tjortjis, Ilja Heitlager, Joost Visser
2008 J jnl
Scoring and summarising gene product clusters using the Gene Ontology.
Int. J. Data Min. Bioinform.
Spiridon C. Denaxas, Christos Tjortjis
2007 J jnl
An improved methodology on information distillation by mining program source code.
Data Knowl. Eng.
Yiannis Kanellopoulos, Christos Makris, Christos Tjortjis
2007 — conf
k-Attractors: A Clustering Algorithm for Software Measurement Data Analysis.
ICTAI (1)
Yiannis Kanellopoulos, Panagiotis Antonellis, Christos Tjortjis, Christos Makris
2006 — conf
A Metric of Confidence in Requirements Gathered from Legacy Systems: Two Industrial Case Studies.
CSMR
James Marchant, Christos Tjortjis, Michael Turega
2006 J jnl
Mining source code elements for comprehending object-oriented systems and evaluating their maintainability.
SIGKDD Explor.
Yiannis Kanellopoulos, Thimios Dimopulos, Christos Tjortjis, Christos Makris
2006 C conf
Towards Healthy Association Rule Mining (HARM): A Fuzzy Quantitative Approach.
IDEAL
Maybin K. Muyeba, M. Sulaiman Khan, Zarrar Malik, Christos Tjortjis
2005 — conf
Building a Multi-level Database for Efficient Information Retrieval: A Framework Definition.
IASTED Conf. on Software Engineering
Spiridon C. Denaxas, Christos Tjortjis
2005 — conf
Clustering Data Retrieved from Java Source Code to Support Software Maintenance: A Case Study.
CSMR
Dimitris Rousidis, Christos Tjortjis
2004 — conf
Data Mining Source Code to Facilitate Program Comprehension: Experiments on Clustering Data Retrieved from C++ Programs.
IWPC
Yiannis Kanellopoulos, Christos Tjortjis
2004 C conf
PRICES: An Efficient Algorithm for Mining Association Rules.
IDEAL
Chuan Wang, Christos Tjortjis
2003 C conf
Experiences of Using a Quantitative Approach for Mining Association Rules.
IDEAL
Liang Dong, Christos Tjortjis
2003 — conf
Facilitating Program Comprehension by Mining Association Rules from Source Code.
IWPC
Christos Tjortjis, Loukas Sinos, Paul J. Layzell
2002 B conf
A Model for Selecting CSCW Technologies for Distributed Software Maintenance Teams in Virtual Organisations.
COMPSAC
Christos Tjortjis, Georgios A. Dafoulas, Paul J. Layzell, Linda A. Macaulay
2002 B conf
From System Comprehension to Program Comprehension.
COMPSAC
Christos Tjortjis, Nicolas Gold, Paul J. Layzell, Keith H. Bennett
2002 C conf
T3: A Classification Algorithm for Data Mining.
IDEAL
Christos Tjortjis, John A. Keane
2001 C conf
Expert Maintainers' Strategies and Needs when Understanding Software: A Case Study Approach.
APSEC
Christos Tjortjis, Paul J. Layzell