Christos Tjortjis

Publication Activity (10 Years)

Years Active: 2001-2024
Publications (10 Years): 64

Top Topics

Association Rule Mining

Machine Learning

Sentiment Analysis

Top Venues

Publications

Vangelis Sarlis, George Papageorgiou, Christos Tjortjis
Injury Patterns and Impact on Performance in the NBA League Using Sports Analytics. Comput. 12 (2) (2024)
George Papageorgiou, Vangelis Sarlis, Christos Tjortjis
Unsupervised Learning in NBA Injury Recovery: Advanced Data Mining to Decode Recovery Durations and Economic Impacts. Inf. 15 (1) (2024)
Anestis Kousis, Christos Tjortjis
Investigating the Key Aspects of a Smart City through Topic Modeling and Thematic Analysis. Future Internet 16 (1) (2024)
Vangelis Sarlis, Christos Tjortjis
Sports Analytics: Data Mining to Uncover NBA Player Position, Age, and Injury Impact on Performance and Economics. Inf. 15 (4) (2024)
Vangelis Sarlis, George Papageorgiou, Christos Tjortjis
Leveraging Sports Analytics and Association Rule Mining to Uncover Recovery and Economic Impacts in NBA Basketball. Data 9 (7) (2024)
Dimitrios Karapiperis, Christos Tjortjis, Vassilios S. Verykios
A Suite of Efficient Randomized Algorithms for Streaming Record Linkage. IEEE Trans. Knowl. Data Eng. 36 (7) (2024)
Konstantina-Vasiliki Tompra, George Papageorgiou, Christos Tjortjis
Strategic Machine Learning Optimization for Cardiovascular Disease Prediction and High-Risk Patient Identification. Algorithms 17 (5) (2024)
George Papageorgiou, Vangelis Sarlis, Christos Tjortjis
Evaluating the effectiveness of machine learning models for performance forecasting in basketball: a comparative study. Knowl. Inf. Syst. 66 (7) (2024)
Nikos Tsalikidis, Aristeidis Mystakidis, Christos Tjortjis, Paraskevas Koukaras, Dimosthenis Ioannidis
Energy load forecasting: one-step ahead hybrid model utilizing ensembling. Computing 106 (1) (2024)
Mohamad Moner Al Chawa, Ronald Tetzlaff, Christos Tjortjis, Stavros G. Stavrinides, Carol de Benito, Rodrigo Picos
A Behavioural Compact Model for Programmable Neuromorphic ReRAM. NANOARCH (2023)
Dimitrios Karapiperis, Christos Tjortjis, Vassilios S. Verykios
A Randomized Blocking Structure for Streaming Record Linkage. Proc. VLDB Endow. 16 (11) (2023)
Muhammad Talha Siddique, Paraskevas Koukaras, Dimosthenis Ioannidis, Christos Tjortjis
SmartBuild RecSys: A Recommendation System Based on the Smart Readiness Indicator for Energy Efficiency in Buildings. Algorithms 16 (10) (2023)
Vasiliki Chouliara, Paraskevas Koukaras, Christos Tjortjis
Fake News Detection Utilizing Textual Cues. AIAI (1) (2023)
Panagiota Anastasiou, Katerina Tzafilkou, Dimitrios Karapiperis, Christos Tjortjis
YouTube Sentiment Analysis on Healthcare Product Campaigns: Combining Lexicons and Machine Learning Models. IISA (2023)
Maria Vasileiou, George Papageorgiou, Christos Tjortjis
A Machine Learning Approach for Effective Software Defect Detection. IISA (2023)
Nikolaos Stasinos, Anestis Kousis, Vangelis Sarlis, Aristeidis Mystakidis, Dimitris Rousidis, Paraskevas Koukaras, Ioannis Kotsiopoulos, Christos Tjortjis
A Tri-Model Prediction Approach for COVID-19 ICU Bed Occupancy: A Case Study. Algorithms 16 (3) (2023)
Chrysoula Dontaki, Paraskevas Koukaras, Christos Tjortjis
Sentiment Analysis on English and Greek Twitter Data Regarding Vaccinations. IISA (2023)
Vangelis Sarlis, George Papageorgiou, Christos Tjortjis
Sports Analytics and Text Mining NBA Data to Assess Recovery from Injuries and Their Economic Impact. Comput. 12 (1) (2023)
Stavros G. Stavrinides, Lydia Bush-Espinosa, Carol de Benito, Nikolaos Athanasios Anagnostopoulos, Tolga Arul, Stefan Katzenbeisser, Christos Tjortjis, Mohamad Moner Al Chawa, Rodrigo Picos
Exploiting Optical Nonlinear Temporal Coupling for Implementing Physical Unclonable Functions. WF-IoT (2023)
Aristeidis Mystakidis, Evangelia Ntozi, Konstantinos Afentoulis, Paraskevas Koukaras, Paschalis Gkaidatzis, Dimosthenis Ioannidis, Christos Tjortjis, Dimitrios Tzovaras
Energy generation forecasting: elevating performance with machine and deep learning. Computing 105 (8) (2023)
Aristeidis Mystakidis, Olga Geromichalou, Christos Tjortjis
Data Mining for Smart Cities: Traffic Congestion Prediction. IISA (2023)
Nikolaos Giannakoulas, George Papageorgiou, Christos Tjortjis
Forecasting Goal Performance for Top League Football Players: A Comparative Study. AIAI (2) (2023)
Paraskevas Koukaras, Dimitrios Rousidis, Christos Tjortjis
Unraveling Microblog Sentiment Dynamics: A Twitter Public Attitudes Analysis towards COVID-19 Cases and Deaths. Informatics 10 (4) (2023)
Paraskevas Koukaras, Christos Tjortjis, Dimitrios Rousidis
Mining association rules from COVID-19 related twitter data to discover word patterns, topics and inferences. Inf. Syst. 109 (2022)
Niccolò Zangrando, Sergio Herrera, Paraskevas Koukaras, Asimina Dimara, Piero Fraternali, Stelios Krinidis, Dimosthenis Ioannidis, Christos Tjortjis, Christos-Nikolaos Anagnostopoulos, Dimitrios Tzovaras
Anomaly Detection in Small-Scale Industrial and Household Appliances. AIAI Workshops (2022)
Evridiki Kapoteli, Paraskevas Koukaras, Christos Tjortjis
Social Media Sentiment Analysis Related to COVID-19 Vaccines: Case Studies in English and Greek Language. AIAI (2) (2022)
Makrina Karagkiozidou, Paraskevas Koukaras, Christos Tjortjis
Sentiment Analysis on COVID-19 Twitter Data: A Sentiment Timeline. AIAI (2) (2022)
Paraskevas Koukaras, Christos Tjortjis, Paschalis Gkaidatzis, Napoleon Bezas, Dimosthenis Ioannidis, Dimitrios Tzovaras
An interdisciplinary approach on efficient virtual microgrid to virtual microgrid energy balancing incorporating data preprocessing techniques. Computing 104 (1) (2022)
Paraskevas Koukaras, Asimina Dimara, Sergio Herrera, Niccolò Zangrando, Stelios Krinidis, Dimosthenis Ioannidis, Piero Fraternali, Christos Tjortjis, Christos-Nikolaos Anagnostopoulos, Dimitrios Tzovaras
Proactive Buildings: A Prescriptive Maintenance Approach. AIAI Workshops (2022)
Dimitrios Panagiotis Kasseropoulos, Paraskevas Koukaras, Christos Tjortjis
Exploiting Textual Information for Fake News Detection. Int. J. Neural Syst. 32 (12) (2022)
Paraskevas Koukaras, Vasiliki Tsichli, Christos Tjortjis
Predicting Stock Market Movements with Social Media and Machine Learning. WEBIST (2021)
Paraskevas Koukaras, Dimitrios Rousidis, Christos Tjortjis
Introducing a novel bi-functional method for exploiting sentiment in complex information networks. Int. J. Metadata Semant. Ontologies 15 (3) (2021)
Anestis Kousis, Christos Tjortjis
Data Mining Algorithms for Smart Cities: A Bibliometric Analysis. Algorithms 14 (8) (2021)
Paraskevas Koukaras, Napoleon Bezas, Paschalis Gkaidatzis, Dimosthenis Ioannidis, Dimitrios Tzovaras, Christos Tjortjis
Introducing a novel approach in one-step ahead energy load forecasting. Sustain. Comput. Informatics Syst. 32 (2021)
Alexia Avramidou, Christos Tjortjis
Emissions for Buildings Using Regression and Classification. AIAI (2021)
Dimitrios Panagiotis Kasseropoulos, Christos Tjortjis
An Approach Utilizing Linguistic Features for Fake News Detection. AIAI (2021)
Christina Nousi, Christos Tjortjis
A Methodology for Stock Movement Prediction Using Sentiment Analysis on Twitter and StockTwits Data. SEEDA-CECNSM (2021)
Stergios Liapis, Konstantinos Christantonis, Victor Chazan Pantzalis, Anastassios Manos, Despina Elizabeth Filippidou, Christos Tjortjis
A methodology using classification for traffic prediction: Featuring the impact of COVID-19. Integr. Comput. Aided Eng. 28 (4) (2021)
Vangelis Sarlis, Vasilis Chatziilias, Christos Tjortjis, Dimitris Mandalidis
A Data Science approach analysing the Impact of Injuries on Basketball Player and Team Performance. Inf. Syst. 99 (2021)
Dimitrios Rousidis, Paraskevas Koukaras, Christos Tjortjis
Examination of NoSQL Transition and Data Mining Capabilities. MTSR (2020)
Vangelis Sarlis, Christos Tjortjis
Sports analytics - Evaluation of basketball players and team performance. Inf. Syst. 93 (2020)
Paraskevas Koukaras, Dimitrios Rousidis, Christos Tjortjis
An Introduction to Information Network Modeling Capabilities, Utilizing Graphs. MTSR (2020)
Dimitrios Rousidis, Paraskevas Koukaras, Christos Tjortjis
Social media prediction: a literature review. Multim. Tools Appl. 79 (9-10) (2020)
Paraskevas Koukaras, Christos Tjortjis, Dimitrios Rousidis
Social Media Types: introducing a data driven taxonomy. Computing 102 (1) (2020)
Victor Chazan Pantzalis, Christos Tjortjis
Sports Analytics for Football League Table and Player Performance Prediction. IISA (2020)
Konstantinos Christantonis, Christos Tjortjis, Anastassios Manos, Despina Elizabeth Filippidou, Eleni Mougiakou, Evangelos Christelis
Using Classification for Traffic Prediction in Smart Cities. AIAI (1) (2020)
Aristeidis Mystakidis, Christos Tjortjis
Big Data Mining for Smart Cities: Predicting Traffic Congestion using Classification. IISA (2020)
Christos Tjortjis
Mining Association Rules from Code (MARC) to support legacy software management. Softw. Qual. J. 28 (2) (2020)
Dimosthenis Beleveslis, Christos Tjortjis
Promoting Diversity in Content Based Recommendation Using Feature Weighting and LSH. AIAI (1) (2020)
Eleana Tsiara, Christos Tjortjis
Using Twitter to Predict Chart Position for Songs. AIAI (1) (2020)
Konstantinos Apostolou, Christos Tjortjis
Sports Analytics algorithms for performance prediction. IISA (2019)
Iotaomicronannis Schoinas, Christos Tjortjis
MuSIF: A Product Recommendation System Based on Multi-source Implicit Feedback. AIAI (2019)
Konstantinos Christantonis, Christos Tjortjis
Data Mining for Smart Cities: Predicting Electricity Consumption by Classification. IISA (2019)
Dimitrios Tasios, Christos Tjortjis, Andreas Gregoriades
Mining Traffic Accident Data for Hazard Causality Analysis. SEEDA-CECNSM (2019)
Dimosthenis Beleveslis, Christos Tjortjis, Dimitris Psaradelis, Dimitris Nikoglou
A Hybrid Method for Sentiment Analysis of Election Related Tweets. SEEDA-CECNSM (2019)
Seyed Mohssen Ghafari, Christos Tjortjis
A survey on association rules mining using heuristics. WIREs Data Mining Knowl. Discov. 9 (4) (2019)
Lazaros Oikonomou, Christos Tjortjis
A Method for Predicting the Winner of the USA Presidential Elections using Data extracted from Twitter. SEEDA-CECNSM (2018)
Manolis Koubarakis, George A. Vouros, Georgios Chalkiadakis, Vassilis P. Plagianakos, Christos Tjortjis, Ergina Kavallieratou, Dimitris Vrakas, Nikolaos Mavridis, Georgios Petasis, Konstantinos Blekas, Anastasia Krithara
AI in Greece: The Case of Research on Linked Geospa al Data. AI Mag. 39 (2) (2018)
Shahpar Yakhchi, Seyed Mohssen Ghafari, Christos Tjortjis, Mahdi Fazeli
ARMICA-Improved: A New Approach for Association Rule Mining. KSEM (2017)
Traianos-Ioannis Theodorou, Athanasios Salamanis, Dionysios D. Kehagias, Dimitrios Tzovaras, Christos Tjortjis
Short-Term Traffic Prediction under Both Typical and Atypical Traffic Conditions using a Pattern Transition Model. VEHITS (2017)
Orestis Nalmpantis, Christos Tjortjis
The 50/50 Recommender: A Method Incorporating Personality into Movie Recommender Systems. EANN (2017)
Panagiotis Tzirakis, Christos Tjortjis
T3C: improving a decision tree classification algorithm's interval splits on continuous attributes. Adv. Data Anal. Classif. 11 (2) (2017)
Shumail Arshad, Christos Tjortjis
Clustering Software Metric Values Extracted from C# Code for Maintainability Assessment. SETN (2016)
Seyed Mohssen Ghafari, Christos Tjortjis
Association Rules Mining by Improving the Imperialism Competitive Algorithm (ARMICA). AIAI (2016)
Diomidis Papas, Christos Tjortjis
Combining Clustering and Classification for Software Quality Evaluation. SETN (2014)
Vassilis C. Gerogiannis, Anthony Karageorgos, Liwei Liu, Christos Tjortjis
Personalised Fuzzy Recommendation for High Involvement Products. SMC (2013)
Vasileios A. Tatsis, Christos Tjortjis, Panagiotis Tzirakis
Evaluating data mining algorithms using molecular dynamics trajectories. Int. J. Data Min. Bioinform. 8 (2) (2013)
Yiannis Kanellopoulos, Panagiotis Antonellis, Christos Tjortjis, Christos Makris, Nikos Tsirakis
K-attractors: a Partitional Clustering Algorithm for Numeric Data Analysis. Appl. Artif. Intell. 25 (2) (2011)
Christos Tjortjis, Christian Zillmann
Welcome from the Industrial Track Chair and the Industrial Forum Chair. CSMR (2011)
Yiannis Kanellopoulos, Panagiotis Antonellis, Dimitris Antoniou, Christos Makris, Evangelos Theodoridis, Christos Tjortjis, Nikos Tsirakis
Code Quality Evaluation Methodology Using The ISO/IEC 9126 Standard CoRR (2010)
Anthony Karageorgos, Dimitra Avramouli, Christos Tjortjis, Georgios Ntalos
Agent-Based Digital Networking in Furniture Manufacturing Enterprises. NDT (2) (2010)
Anthony Karageorgos, Anthony Avramouli, Georgios Ntalos, Christos Tjortjis, Konstantina Vassilopoulou
Towards Agent-Based 'Smart' Collaboration in Enterprise Networks. WETICE (2010)
Shaoyan Zhang, Christos Tjortjis, Xiao-Jun Zeng, Hong Qiao, Iain E. Buchan, John A. Keane
Comparing data mining methods with logistic regression in childhood obesity prediction. Inf. Syst. Frontiers 11 (4) (2009)
Panagiotis Antonellis, Dimitris Antoniou, Yiannis Kanellopoulos, Christos Makris, Evangelos Theodoridis, Christos Tjortjis, Nikos Tsirakis
Clustering for Monitoring Software Systems Maintainability Evolution. Electron. Notes Theor. Comput. Sci. 233 (2009)
Kostas Kontogiannis, Christos Tjortjis, Andreas Winter
Special issue on the 12th conference on software maintenance and reengineering (CSMR 2008). J. Softw. Maintenance Res. Pract. 21 (2) (2009)
Christos Tjortjis, Joost Visser
3rd International Workshop on Software Quality and Maintainability. CSMR (2009)
Panagiotis Antonellis, Dimitris Antoniou, Yiannis Kanellopoulos, Christos Makris, Christos Tjortjis, Vangelis Theodoridis, Nikos Tsirakis
Code4Thought Project: Employing the ISO/IEC-9126 Standard for Software Engineering-Product Quality Assessment. CSMR (2009)
Spiridon C. Denaxas, Christos Tjortjis
A GO-driven semantic similarity measure for quantifying the biological relatedness of gene products. Intell. Decis. Technol. 3 (4) (2009)
Yiannis Kanellopoulos, Christos Tjortjis, Ilja Heitlager, Joost Visser
Interpretation of Source Code Clusters in Terms of the ISO/IEC-9126 Maintainability Characteristics. CSMR (2008)
Spiridon C. Denaxas, Christos Tjortjis
Scoring and summarising gene product clusters using the Gene Ontology. Int. J. Data Min. Bioinform. 2 (3) (2008)
Yiannis Kanellopoulos, Christos Makris, Christos Tjortjis
An improved methodology on information distillation by mining program source code. Data Knowl. Eng. 61 (2) (2007)
Yiannis Kanellopoulos, Panagiotis Antonellis, Christos Tjortjis, Christos Makris
k-Attractors: A Clustering Algorithm for Software Measurement Data Analysis. ICTAI (1) (2007)
James Marchant, Christos Tjortjis, Michael Turega
A Metric of Confidence in Requirements Gathered from Legacy Systems: Two Industrial Case Studies. CSMR (2006)
Maybin K. Muyeba, M. Sulaiman Khan, Zarrar Malik, Christos Tjortjis
Towards Healthy Association Rule Mining (HARM): A Fuzzy Quantitative Approach. IDEAL (2006)
Yiannis Kanellopoulos, Thimios Dimopulos, Christos Tjortjis, Christos Makris
Mining source code elements for comprehending object-oriented systems and evaluating their maintainability. SIGKDD Explor. 8 (1) (2006)
Spiridon C. Denaxas, Christos Tjortjis
Building a Multi-level Database for Efficient Information Retrieval: A Framework Definition. IASTED Conf. on Software Engineering (2005)
Dimitris Rousidis, Christos Tjortjis
Clustering Data Retrieved from Java Source Code to Support Software Maintenance: A Case Study. CSMR (2005)
Chuan Wang, Christos Tjortjis
PRICES: An Efficient Algorithm for Mining Association Rules. IDEAL (2004)
Yiannis Kanellopoulos, Christos Tjortjis
Data Mining Source Code to Facilitate Program Comprehension: Experiments on Clustering Data Retrieved from C++ Programs. IWPC (2004)
Christos Tjortjis, Loukas Sinos, Paul J. Layzell
Facilitating Program Comprehension by Mining Association Rules from Source Code. IWPC (2003)
Liang Dong, Christos Tjortjis
Experiences of Using a Quantitative Approach for Mining Association Rules. IDEAL (2003)
Christos Tjortjis, Nicolas Gold, Paul J. Layzell, Keith H. Bennett
From System Comprehension to Program Comprehension. COMPSAC (2002)
Christos Tjortjis, Georgios A. Dafoulas, Paul J. Layzell, Linda A. Macaulay
A Model for Selecting CSCW Technologies for Distributed Software Maintenance Teams in Virtual Organisations. COMPSAC (2002)
Christos Tjortjis, John A. Keane
T3: A Classification Algorithm for Data Mining. IDEAL (2002)
Christos Tjortjis, Paul J. Layzell
Expert Maintainers' Strategies and Needs when Understanding Software: A Case Study Approach. APSEC (2001)