George A. Tsihrintzis

221 papers B 19C 4Misc 3Journal 72Unranked 87
YearRankTypeTitle / Venue / Authors
2025 B conf
A Simulation Framework for Battery Optimization Under Extreme Energy Imbalance Using Machine Learning Forecasting.
ICTAI
Dimitrios P. Panagoulias, Elissaios Sarmas, Vangelis Marinakis, Maria Virvou, George A. Tsihrintzis
2025 J jnl
A framework for evaluation and requirement extraction for fine-tuning of Large Language Models in multimodal medical diagnosis.
Knowl. Based Syst.
Dimitrios P. Panagoulias, Anastasios P. Palamidas, Maria Virvou, George A. Tsihrintzis
2025 J jnl
Adaptive boundary-aware artificial immune recognition system for data classification.
Inf. Sci.
Dionisios N. Sotiropoulos, Dimitrios G. Giatzitzoglou, George A. Tsihrintzis
2025 B conf
An OSCE-Inspired Framework for Fine-Tuning Multimodal LLMs in Medical Diagnosis.
KES
Dimitrios P. Panagoulias, Anastasios P. Palamidas, Maria Virvou, George A. Tsihrintzis
2025 — book
Artificial Intelligence-Empowered Bio-medical Applications - Challenges, Solutions and Development Guidelines
Dimitrios P. Panagoulias, George A. Tsihrintzis, Maria Virvou
2025 — conf
Bi-Directional 21
IISA
Maria Virvou, George A. Tsihrintzis, Konstantina Chrysafiadi, Evangelos Sakkopoulos, Evangelia-Aikaterini Tsichrintzi
2025 J jnl
Book Review SpyrosPapadimitriouMariaVirvou (2025). Artificial Intelligence - Based Games as Novel Holistic Educational Environments to Teach twenty-first Century Skills. Springer, pp. 309, ISBN 978-3-031-77463-8.
Intell. Decis. Technol.
George A. Tsihrintzis
2025 J jnl
Dermacen analytica: A novel methodology integrating multi-modal large language models with machine learning in dermatology.
Int. J. Medical Informatics
Dimitrios P. Panagoulias, Evridiki Tsoureli-Nikita, Maria Virvou, George A. Tsihrintzis
2025 — conf
Emotional Advice Compared Between an Affective Intelligent Authoring Tool and Generative AI: A Cognitive Walkthrough in Medical Mobile Tutor and ChatGPT.
IISA
Maria Virvou, George A. Tsihrintzis, Efthimios Alepis
2025 J jnl
Energy Urban Domain: Personalized Evaluation of Expert and Non-Expert Stakeholder Interaction With Artificial Intelligence Through ChatGPT Using the VIRTSI Model.
IEEE Access
George A. Tsihrintzis, Elissaios Sarmas, Vangelis Marinakis, Dimitrios P. Panagoulias, Evangelia-Aikaterini Tsichrintzi, Maria Virvou
2025 — conf
Federated Deep Reinforcement Learning for Collaborative Autonomous Navigation in GPS-Denied Environments.
IISA
Nikolaos D. Almalis, George A. Tsihrintzis, Achilleas Stergioulis, Michail Mitsios
2025 — conf
Hallucinations in Generative AI: Epistemic Risks for Learners in Educational Applications.
IISA
Maria Virvou, George A. Tsihrintzis, Evangelia-Aikaterini Tsichrintzi
2025 J jnl
Intelligent decision technologies: An international journal (IDT) heading into its 19th year - A short note from the editors-in-chief.
Intell. Decis. Technol.
George A. Tsihrintzis, Gloria E. Phillips-Wren, Lakhmi C. Jain
2025 J jnl
LYRICEL: Knowledge Graphs Combined With Large Language Models and Machine Learning for Cross-Cultural Analysis of Lyrics - The Case of Greek Songs.
IEEE Access
Dimitrios P. Panagoulias, Evangelia-Aikaterini Tsichrintzi, Dionisios N. Sotiropoulos, Konstantina Chrysafiadi, Evangelos Sakkopoulos, George A. Tsihrintzis, Maria Virvou
2025 B conf
Learning to Navigate and Track Using a Decentralized Reinforcement Learning Framework for UAV Operations in GNSS-Denied Terrain.
ICTAI
Nikolaos D. Almalis, George A. Tsihrintzis, Achilleas Stergioulis, Michail Mitsios, Tsiapras Tilemachos
2025 — conf
Learning to Navigate and Track: A Decentralized RL Framework for UAV Operations in GNSS-Denied Terrain.
AI (1)
Nikolaos D. Almalis, George A. Tsihrintzis, Michail Mitsios, Tsiapras Tilemachos
2025 C conf
MemoryBERT: A Systematic Framework for Memory Identification.
BIBE
Dimitrios P. Panagoulias, Persephone Papatheodosiou, Anastasios Bonakis, Dimitris G. Dikeos, Maria Virvou, George A. Tsihrintzis
2025 — conf
Requirements for Fair and Trustworthy AI: Overcoming Clustering and Stereotype Bias Through Individualized User Modeling.
IISA
Maria Virvou, George A. Tsihrintzis
2025 B conf
Trustworthy Integration of Generative AI and LLMs in the Energy Digital Spine: Epistemic Risk Models and Trust Performance Indicators.
ICTAI
Maria Virvou, George A. Tsihrintzis, Vangelis Marinakis, Elissaios Sarmas, Dimitrios P. Panagoulias, Evangelia-Aikaterini Tsichrintzi
2025 B conf
Truth in Trees: A Multilayered Linguistic Framework for Automated Fact-Checking with AI-Driven Reasoning.
KES
Dimitrios P. Panagoulias, Maria Virvou, George A. Tsihrintzis
2025 J jnl
Two outstanding works to harness artificial intelligence in the energy sector 1. Machine Learning Applications for Intelligent Energy Management -Invited Chapters from Experts on the Energy Field. Editors: Haris Doukas; Vangelis Marinakis; Elissaios Sarmas: Springer 2024, pp. 226, ISBN 978-3-031-47908-3. Vol. 35 in Springer Book Series entitled.
Intell. Decis. Technol.
George A. Tsihrintzis
2025 B conf
Which AI and How Trusted by Human Energy Stakeholders? Comparing Generative AI ChatGPT With Domain Specific AI-ENERGIA-SYS.
SMC
George A. Tsihrintzis, Elissaios Sarmas, Vangelis Marinakis, Dimitrios P. Panagoulias, Evangelia-Aikaterini Tsichrintzi, Maria Virvou
2024 — ed.
15th International Conference on Information, Intelligence, Systems & Applications, IISA 2024, Chania Crete, Greece, July 17-19, 2024
IISA
Nikolaos G. Bourbakis, George A. Tsihrintzis, Maria Virvou
2024 J jnl
A novel framework for artificial intelligence explainability via the Technology Acceptance Model and Rapid Estimate of Adult Literacy in Medicine using machine learning.
Expert Syst. Appl.
Dimitrios P. Panagoulias, Maria Virvou, George A. Tsihrintzis
2024 — conf
Artificial Intelligence Chatbots and Social Robots in Education: FEPER Framework for Efficiency, Pedagogical and Ethical Requirements.
IISA
Maria Virvou, George A. Tsihrintzis
2024 J jnl
COGNET-MD, an evaluation framework and dataset for Large Language Model benchmarks in the medical domain.
CoRR
Dimitrios P. Panagoulias, Persephone Papatheodosiou, Anastasios P. Palamidas, Mattheos Sanoudos, Evridiki Tsoureli-Nikita, Maria Virvou, George A. Tsihrintzis
2024 J jnl
Dermacen Analytica: A Novel Methodology Integrating Multi-Modal Large Language Models with Machine Learning in tele-dermatology.
CoRR
Dimitrios P. Panagoulias, Evridiki Tsoureli-Nikita, Maria Virvou, George A. Tsihrintzis
2024 J jnl
Evaluating LLM - Generated Multimodal Diagnosis from Medical Images and Symptom Analysis.
CoRR
Dimitrios P. Panagoulias, Maria Virvou, George A. Tsihrintzis
2024 — conf
Evaluating Non-Expert Stakeholder Interaction with Artificial Intelligence on Energy Urban Domain Using VIRTSI: The Case of ChatGPT.
IISA
George A. Tsihrintzis, Elissaios Sarmas, Vangelis Marinakis, Dimitrios P. Panagoulias, Evangelia-Aikaterini Tsichrintzi, Maria Virvou
2024 — conf
GRoup AFFEct Recognition: The Side of Heartbeats.
IISA
Andreas M. Triantafyllou, George A. Tsihrintzis
2024 — conf
Impact of Consequenses on Human Trust Dynamics in Artificial Intelligence Responses.
IISA
Maria Virvou, George A. Tsihrintzis
2024 J jnl
Integrating Dynamic Correlation Shifts and Weighted Benchmarking in Extreme Value Analysis.
CoRR
Dimitrios P. Panagoulias, Elissaios Sarmas, Vangelis Marinakis, Maria Virvou, George A. Tsihrintzis
2024 J jnl
Intelligent Decision Technologies: An International Journal (IDT) heading into its 18th year: A Short Note from the Editors-in-Chief.
Intell. Decis. Technol.
George A. Tsihrintzis, Gloria E. Phillips-Wren, Lakhmi C. Jain
2024 B conf
Knowledge Space reduction via Sequential Language Model Integration.
KES
Dimitrios P. Panagoulias, Maria Virvou, George A. Tsihrintzis
2024 — conf
LYRICEL: A Rule-Augmented Artificial Intelligence-Empowered Cultural E-Learning with GPT and Machine Learning for Song Lyrics.
IISA
Dimitrios P. Panagoulias, Dionisios N. Sotiropoulos, Konstantina Chrysafiadi, Evangelia-Aikaterini Tsichrintzi, Evangelos Sakkopoulos, George A. Tsihrintzis, Maria Virvou
2024 — conf
Large Language Models as a Service: Optimisation Strategies via Knowledge Space Reduction.
COINS
Dimitrios P. Panagoulias, Maria Virvou, George A. Tsihrintzis
2024 B conf
Leveraging Artificial Intelligence for personalised insomnia-sleep calibration via the Big Five Personality Traits.
KES
Persephone Papatheodosiou, Dimitrios P. Panagoulias, Maria Virvou, George A. Tsihrintzis, Anastasios Bonakis, Dimitrios Dikeos
2024 — conf
Mathematical Representation of Memory and Schema for Improving Human-Generative AI Interactions.
IISA
Dimitrios P. Panagoulias, Persephone Papatheodosiou, Anastasios Bonakis, Dimitrios Dikeos, Maria Virvou, George A. Tsihrintzis
2024 B conf
Memory and Schema in Human-Generative Artificial Intelligence Interactions.
ICTAI
Dimitrios P. Panagoulias, Persephone Papatheodosiou, Anastasios Bonakis, Dimitrios Dikeos, Maria Virvou, George A. Tsihrintzis
2024 — ed.
Proceedings of SNSFAIT 2024: International Symposium on Securing Next Generation Systems Using Future Artificial Intelligence Technologies, New Delhi, India, August 8-9, 2024.
SNSFAIT
Deepak Gupta, Namita Gupta, George A. Tsihrintzis
2024 J jnl
VIRTSI: A novel trust dynamics model enhancing Artificial Intelligence collaboration with human users - Insights from a ChatGPT evaluation study.
Inf. Sci.
Maria Virvou, George A. Tsihrintzis, Evangelia-Aikaterini Tsichrintzi
2023 — ed.
14th International Conference on Information, Intelligence, Systems & Applications, IISA 2023, Volos, Greece, July 10-12, 2023
IISA
Nikolaos G. Bourbakis, George A. Tsihrintzis, Maria Virvou
2023 — conf
A Novel Trust State-Chart Model for Requirements Engineering of Trustful AI - Empowered Software.
IISA
Maria Virvou, George A. Tsihrintzis
2023 J jnl
An Adaptive Learning Environment for Programming Based on Fuzzy Logic and Machine Learning.
Int. J. Artif. Intell. Tools
Konstantina Chrysafiadi, Maria Virvou, George A. Tsihrintzis, Ioannis Hatzilygeroudis
2023 C conf
An Empirical Study Concerning the Impact of Perceived Usefulness and Ease of Use on the Adoption of AI-Empowered Medical Applications.
BIBE
Dimitrios P. Panagoulias, Maria Virvou, George A. Tsihrintzis
2023 — conf
Applying DOI Theory to Assess the Required Level of Explainability in Artificial Intelligence-empowered Medical Applications.
IISA
Dimitrios P. Panagoulias, Maria Virvou, George A. Tsihrintzis
2023 — conf
ChatGPT in Artificial Intelligence-Empowered E-Learning for Cultural Heritage: The case of Lyrics and Poems.
IISA
Maria Virvou, George A. Tsihrintzis, Dionisios N. Sotiropoulos, Konstantina Chrysafiadi, Evangelos Sakkopoulos, Evangelia-Aikaterini Tsichrintzi
2023 J jnl
Editorial: Special Issue on Selected Papers from the 33rd Annual IEEE International Conference on Tools with Artificial Intelligence (ICTAI-2021).
Int. J. Artif. Intell. Tools
George A. Tsihrintzis, Maria Virvou, Ioannis Hatzilygeroudis
2023 — conf
Evaluating the Potential of LLMs and ChatGPT on Medical Diagnosis and Treatment.
IISA
Dimitrios P. Panagoulias, Filippos A. Palamidas, Maria Virvou, George A. Tsihrintzis
2023 J jnl
Evaluating the user's experience, adaptivity and learning outcomes of a fuzzy-based intelligent tutoring system for computer programming for academic students in Greece.
Educ. Inf. Technol.
Konstantina Chrysafiadi, Maria Virvou, George A. Tsihrintzis, Ioannis Hatzilygeroudis
2023 C conf
Evaluation of ChatGPT-supported diagnosis, staging and treatment planning for the case of lung cancer.
AICCSA
Dimitrios P. Panagoulias, Filippos A. Palamidas, Maria Virvou, George A. Tsihrintzis
2023 J jnl
Intelligent Decision Technologies: An International Journal (IDT) heading into its 17th year: A Short Note from the Editors.
Intell. Decis. Technol.
George A. Tsihrintzis, Gloria E. Phillips-Wren, Lakhmi C. Jain, Junzo Watada
2023 — conf
Is ChatGPT Beneficial to Education? A Holistic Evaluation Framework Based on Intelligent Tutoring Systems.
IISA
Maria Virvou, George A. Tsihrintzis
2023 B ed.
Knowledge-Based and Intelligent Information & Engineering Systems: Proceedings of the 27th International Conference KES-2023, Athens, Greece, 6-8 September 2023.
KES
George A. Tsihrintzis, Carlos Toro, Sebastián A. Ríos, Robert J. Howlett, Lakhmi C. Jain
2023 — conf
Pre-made Empowering Artificial Intelligence and ChatGPT: The Growing Importance of Human AI-Experts.
IISA
Maria Virvou, George A. Tsihrintzis
2023 B conf
Rule-Augmented Artificial Intelligence-empowered Systems for Medical Diagnosis using Large Language Models.
ICTAI
Dimitrios P. Panagoulias, Filippos A. Palamidas, Maria K. Virvou, George A. Tsihrintzis
2023 J jnl
Special collection of invited original research papers on "Contributions by women in theory and applications of artificial intelligence".
Intell. Decis. Technol.
Maria Virvou, George A. Tsihrintzis, Gloria E. Phillips-Wren, Lakhmi C. Jain
2023 J jnl
Special issue on information, intelligence, systems and applications.
Neural Comput. Appl.
Ioannis Hatzilygeroudis, George A. Tsihrintzis, Maria Virvou, Isidoros Perikos
2023 B conf
Tailored Explainability in Medical Artificial Intelligence-empowered Applications: Personalisation via the Technology Acceptance Model.
ICTAI
Dimitrios P. Panagoulias, Maria Virvou, George A. Tsihrintzis
2022 — ed.
13th International Conference on Information, Intelligence, Systems & Applications, IISA 2022, Corfu, Greece, July 18-20, 2022
IISA
Nikolaos G. Bourbakis, George A. Tsihrintzis, Maria Virvou
2022 J jnl
A fuzzy-based mechanism for automatic personalized assessment in an e-learning system for computer programming.
Intell. Decis. Technol.
Konstantina Chrysafiadi, Maria Virvou, George A. Tsihrintzis
2022 B conf
A microservices-based iterative development approach for usable, reliable and explainable A.I.-infused medical applications using R.U.P.
ICTAI
Dimitrios P. Panagoulias, Maria Virvou, George A. Tsihrintzis
2022 — book
Advances in Selected Artificial Intelligence Areas - World Outstanding Women in Artificial Intelligence
Advances in Selected Artificial Intelligence Areas
Maria Virvou, George A. Tsihrintzis, Lakhmi C. Jain
2022 — conf
Extreme value analysis for dietary intake based on weight class.
IISA
Dimitrios P. Panagoulias, Dionisios N. Sotiropoulos, George A. Tsihrintzis
2022 J jnl
Incorporating environmental and social considerations into the portfolio optimization process.
Ann. Oper. Res.
Konstantinos Liagkouras, Kostas S. Metaxiotis, George A. Tsihrintzis
2022 J jnl
Intelligent Decision Technologies: An International Journal (IDT) enters its 16th year: A short note from the editors.
Intell. Decis. Technol.
George A. Tsihrintzis, Gloria E. Phillips-Wren, Lakhmi C. Jain, Junzo Watada
2022 — ed.
International Conference on Computer, Information and Telecommunication Systems, CITS 2022, Piraeus, Greece, July 13-15, 2022
CITS
George A. Tsihrintzis, Maria Virvou, Kuei-Fang Hsiao, Petros Nicopolitidis, Yu Guo
2022 — ch.
Introduction to Advances in Selected Artificial Intelligence Areas.
Advances in Selected Artificial Intelligence Areas
Maria Virvou, George A. Tsihrintzis, Lakhmi C. Jain
2022 — conf
Regulation and Validation Challenges in Artificial Intelligence-Empowered Healthcare Applications - The Case of Blood-Retrieved Biomarkers.
JCKBSE
Dimitrios P. Panagoulias, Maria Virvou, George A. Tsihrintzis
2022 J jnl
Special Collection of Extended Selected Papers on "Novel Research Results Presented at the 14th International Joint Conference on Knowledge-based Software Engineering (JCKBSE2022), 22-24 August 2022, ...
Intell. Decis. Technol.
George A. Tsihrintzis, Maria Virvou, Takuya Saruwatari
2022 J jnl
V-GRAFFER, a system for Visual GRoup AFFect Recognition, Part I: Foundations.
Intell. Decis. Technol.
Andreas M. Triantafyllou, George A. Tsihrintzis
2022 — conf
nuhealthsoft: A Nutritional and Health Data Processing Software Tool from a patient's perspective.
SITIS
Dimitrios P. Panagoulias, Maria Virvou, George A. Tsihrintzis
2021 — ed.
12th International Conference on Information, Intelligence, Systems & Applications, IISA 2021, Chania Crete, Greece, July 12-14, 2021
IISA
Nikolaos G. Bourbakis, George A. Tsihrintzis, Maria Virvou
2021 J jnl
15 years of the International Journal of Intelligent Decision Technologies (IDT): Reflection from the Editors.
Intell. Decis. Technol.
Gloria E. Phillips-Wren, George A. Tsihrintzis, Lakhmi C. Jain, Junzo Watada
2021 B conf
Biomarker-based deep learning for personalized nutrition.
ICTAI
Dimitrios P. Panagoulias, Dionisios N. Sotiropoulos, George A. Tsihrintzis
2021 B conf
Machine Learning in Intangible Cultural Analytics: The Case of Greek Songs' Lyrics.
ICTAI
Dionisios N. Sotiropoulos, George A. Tsihrintzis, Maria Virvou, Evangelia-Aikaterini Tsichrintzi
2021 — conf
Nutritional biomarkers and machine learning for personalized nutrition applications and health optimization.
IISA
Dimitrios P. Panagoulias, Dionisios N. Sotiropoulos, George A. Tsihrintzis
2021 J jnl
Nutritional biomarkers and machine learning for personalized nutrition applications and health optimization.
Intell. Decis. Technol.
Dimitrios P. Panagoulias, Dionisios N. Sotiropoulos, George A. Tsihrintzis
2021 J jnl
Special Collection of Extended Selected Papers on "Novel Research Results Presented in The 12th International Conference on Information, Intelligence, Systems and Applications (IISA2021), 12-14 July 2...
Intell. Decis. Technol.
George A. Tsihrintzis, Maria Virvou, Ioannis Hatzilygeroudis
2020 — ed.
11th International Conference on Information, Intelligence, Systems and Applications, IISA 2020, Piraeus, Greece, July 15-17, 2020
IISA
Nikolaos G. Bourbakis, George A. Tsihrintzis, Maria Virvou
2020 — conf
Group affect Recognition: Facial Feature Extraction via Color Inverted Points.
IISA
Andreas M. Triantafyllou, George A. Tsihrintzis
2020 J jnl
Handling the crowd avoidance problem in job recommendation systems integrating FoDRA.
Int. J. Comput. Intell. Stud.
Nikolaos D. Almalis, George A. Tsihrintzis, Ioannis Papaioannou
2020 — book
Machine Learning Paradigms - Advances in Learning Analytics
Machine Learning Paradigms
Maria Virvou, Efthimios Alepis, George A. Tsihrintzis, Lakhmi C. Jain
2020 — ch.
Machine Learning Paradigms - Advances in Learning Analytics.
Machine Learning Paradigms
Maria Virvou, Efthimios Alepis, George A. Tsihrintzis, Lakhmi C. Jain
2019 — ed.
10th International Conference on Information, Intelligence, Systems and Applications, IISA 2019, Patras, Greece, July 15-17, 2019
IISA
Nikolaos G. Bourbakis, George A. Tsihrintzis, Maria Virvou
2019 — conf
AIRS-x: An eXtension to the Original Artificial Immune Recognition Learning Algorithm.
CITS
Dimitrios G. Giatzitzoglou, Dionisios N. Sotiropoulos, George A. Tsihrintzis
2019 J jnl
Artificial Immune System-Based Learning Style Stereotypes.
Int. J. Artif. Intell. Tools
Dionisios N. Sotiropoulos, Efthimios Alepis, Katerina Kabassi, Maria K. Virvou, George A. Tsihrintzis, Evangelos Sakkopoulos
2019 — conf
Group Affect Recognition: Completed Databases and Smart Uses.
ICEBT
Andreas Triantafyllou, George A. Tsihrintzis
2019 — book
Machine Learning Paradigms - Advances in Data Analytics
Machine Learning Paradigms
George A. Tsihrintzis, Dionisios N. Sotiropoulos, Lakhmi C. Jain
2019 — ch.
Machine Learning Paradigms: Advances in Data Analytics.
Machine Learning Paradigms
George A. Tsihrintzis, Dionisios N. Sotiropoulos, Lakhmi C. Jain
2019 J jnl
Surveys in artificial intelligence-based technologies.
Intell. Decis. Technol.
George A. Tsihrintzis, Maria Virvou, Gloria E. Phillips-Wren
2018 — ed.
9th International Conference on Information, Intelligence, Systems and Applications, IISA 2018, Zakynthos, Greece, July 23-25, 2018
IISA
Nikolaos G. Bourbakis, George A. Tsihrintzis, Maria Virvou
2018 J jnl
A constraint-based job recommender system integrating FoDRA.
Int. J. Comput. Intell. Stud.
Nikolaos D. Almalis, George A. Tsihrintzis, Evangelos Kyritsis
2018 — conf
An Artificial Immune System-Based Approach for the Extraction of Learning Style Stereotypes.
JCKBSE
Dionisios N. Sotiropoulos, Efthimios Alepis, Katerina Kabassi, Maria K. Virvou, George A. Tsihrintzis
2018 J jnl
Artificial immune system-based music recommendation.
Intell. Decis. Technol.
Dionisios N. Sotiropoulos, George A. Tsihrintzis
2018 J jnl
Computer aided breast cancer diagnosis: an SVM-based mammogram classification approach.
Int. J. Comput. Intell. Stud.
Antonis Agrios, Dionisios N. Sotiropoulos, George A. Tsihrintzis
2018 — conf
Group Affect Recognition: Evaluation of Basic Automated Sorting.
IISA
Andreas M. Triantafyllou, George A. Tsihrintzis
2018 — conf
Group Affect Recognition: Optimization of Automatic Classification.
JCKBSE
Andreas M. Triantafyllou, George A. Tsihrintzis
2018 B conf
Sensus Vox: Sentiment Mapping Through Smartphone Multi-Sensory Crowdsourcing.
ICTAI
Angelos Fasoulis, Maria Virvou, George A. Tsihrintzis, Constantinos Patsakis, Efthimios Alepis
2017 — ed.
8th International Conference on Information, Intelligence, Systems & Applications, IISA 2017, Larnaca, Cyprus, August 27-30, 2017
IISA
Nikolaos G. Bourbakis, George A. Tsihrintzis, Maria Virvou
2017 J jnl
Artificial Immune System-Based Classification in Extremely Imbalanced Classification Problems.
Int. J. Artif. Intell. Tools
Dionisios N. Sotiropoulos, George A. Tsihrintzis
2017 B conf
Group Affect Recognition: Visual - Facial Data Collection.
ICTAI
Andreas Triantafyllou, George A. Tsihrintzis
2017 J jnl
Identifying and managing risks in the development of online educational software for social media use.
Int. J. Comput. Intell. Stud.
Dimitris Koutanis, George A. Tsihrintzis, Dionisios N. Sotiropoulos
2017 — book
Machine Learning Paradigms - Artificial Immune Systems and their Applications in Software Personalization
Dionisios N. Sotiropoulos, George A. Tsihrintzis
2016 — ed.
7th International Conference on Information, Intelligence, Systems & Applications, IISA 2016, Chalkidiki, Greece, July 13-15, 2016
IISA
Nikolaos G. Bourbakis, George A. Tsihrintzis, Maria Virvou, Despina Kavraki
2016 — conf
A mathematical analysis of the Genetic-AIRS classification algorithm.
EUSIPCO
Dimitrios Mathioudakis, Dionisios N. Sotiropoulos, George A. Tsihrintzis
2016 — conf
Categorization of research surveys and reviews on human activities.
IISA
Anargyros Angeleas, Nikolaos G. Bourbakis, George A. Tsihrintzis
2016 — conf
Rdf serialization from JSON data: The case of JSON data in Diavgeia.gov.gr.
IISA
Stamatios Theocharis, George A. Tsihrintzis
2015 — ed.
6th International Conference on Information, Intelligence, Systems and Applications, IISA 2015, Corfu, Greece, July 6-8, 2015
IISA
Nikolaos G. Bourbakis, George A. Tsihrintzis, Maria Virvou
2015 — conf
A New Content-Based Recommendation Algorithm for Job Recruiting.
SGAI Conf.
Nikolaos D. Almalis, George A. Tsihrintzis, Nikolaos Karagiannis
2015 J jnl
Combining rule-based reasoning with multi-criteria decision-making in the context of adaptive tutoring for health issues.
Int. J. Comput. Intell. Stud.
Katerina Kabassi, Maria Virvou, George A. Tsihrintzis
2015 — conf
FoDRA - A new content-based job recommendation algorithm for job seeking and recruiting.
IISA
Nikolaos D. Almalis, George A. Tsihrintzis, Nikolaos Karagiannis, Aggeliki D. Strati
2015 — conf
Further results in identifying and managing risks in the development of online educational software.
IISA
Dimitris Koutanis, George A. Tsihrintzis, Maria Virvou
2015 — book
Machine Learning Paradigms - Applications in Recommender Systems
Aristomenis S. Lampropoulos, George A. Tsihrintzis
2015 — conf
Open data triplification: The case of the greek open public data.
IISA
George A. Tsihrintzis, Stamatios Theocharis
2015 J jnl
Special Issue on Advances in Recommender Systems.
Intell. Decis. Technol.
Maria Virvou, George A. Tsihrintzis
2014 — ed.
5th International Conference on Information, Intelligence, Systems and Applications, IISA 2014, Chania, Crete, Greece, July 7-9, 2014
IISA
Nikolaos G. Bourbakis, George A. Tsihrintzis, Maria Virvou
2014 — conf
A comparative study of one-class classifiers in machine learning problems with extreme class imbalance.
IISA
Dionisios N. Sotiropoulos, Christos Giannoulis, George A. Tsihrintzis
2014 — conf
A content based approach for recommending personnel for job positions.
IISA
Nikolaos D. Almalis, George A. Tsihrintzis, Nikolaos Karagiannis
2014 J jnl
Cascade Hybrid Recommendation as a Combination of One-Class Classification and Collaborative Filtering.
Int. J. Artif. Intell. Tools
Aristomenis S. Lampropoulos, Dionisios N. Sotiropoulos, George A. Tsihrintzis
2014 J jnl
Editorial.
Int. J. Artif. Intell. Tools
George A. Tsihrintzis, Themis Panayiotopoulos, Ioannis P. Vlahavas, Sotiris G. Ziavras
2014 — conf
Genetic-AIRS: A hybrid classification method based on Genetic Algorithms and Artificial Immune Systems.
IISA
Dionisios N. Sotiropoulos, Dimitrios Mathioudakis, George A. Tsihrintzis
2014 — conf
Identifying and managing risks in the development of online educational software.
IISA
Dimitris Koutanis, George A. Tsihrintzis, Maria Virvou
2014 — conf
Ontology development to support the Open Public data - The Greek case.
IISA
Stamatios Theocharis, George A. Tsihrintzis
2014 — conf
Semantic concepts in BPMN 2.0.
IISA
Eleni-Maria Kalogeraki, Stamatios Theocharis, Dimitris Apostolou, George A. Tsihrintzis, Themis Panayiotopoulos
2013 — ed.
4th International Conference on Information, Intelligence, Systems and Applications, IISA 2013, Piraeus, Greece, July 10-12, 2013
IISA
Nikolaos G. Bourbakis, George A. Tsihrintzis, Maria Virvou
2013 — conf
Evaluation of density one-class classifiers for item-based filtering.
IISA
Aristomenis S. Lampropoulos, George A. Tsihrintzis
2013 — ed.
Intelligent Interactive Multimedia Systems and Services - Proceedings of the 6th International Conference on Intelligent Interactive Multimedia Systems and Services, IIMSS 2013, Sesimbra, Portugal, 26-28 June 2013
IIMSS
George A. Tsihrintzis, Maria Virvou, Toyohide Watanabe, Lakhmi C. Jain, Robert J. Howlett
2013 — conf
Open data for e-government the Greek case.
IISA
Stamatios Theocharis, George A. Tsihrintzis
2013 — conf
Personalization as a means to improve e-services.
CITS
Stamatios A. Theocharis, George A. Tsihrintzis
2012 J jnl
A Cascade-Hybrid Music Recommender System for mobile services based on musical genre classification and personality diagnosis.
Multim. Tools Appl.
Aristomenis S. Lampropoulos, Paraskevi S. Lampropoulou, George A. Tsihrintzis
2012 — conf
A Concept-Based Image Acquisition System with User-Driven Classification.
JCKBSE
Dionisios N. Sotiropoulos, Aristomenis S. Lampropoulos, George A. Tsihrintzis
2012 — conf
Artificial Immune System-based Classification in Class-Imbalanced Image Classification Problems.
IIH-MSP
Dionisios N. Sotiropoulos, George A. Tsihrintzis
2012 — conf
Artificial Immune System-based Music Piece Recommendation.
JCKBSE
Aristomenis S. Lampropoulos, Dionisios N. Sotiropoulos, George A. Tsihrintzis
2012 — conf
Comparative Study of One-Class Classifiers for Item-based Filtering.
SGAI Conf.
Aristomenis S. Lampropoulos, George A. Tsihrintzis
2012 — ed.
Eighth International Conference on Intelligent Information Hiding and Multimedia Signal Processing, IIH-MSP 2012, Piraeus-Athens, Greece, July 18-20, 2012
IIH-MSP
George A. Tsihrintzis, Jeng-Shyang Pan, Hsiang-Cheh Huang, Maria Virvou, Lakhmi C. Jain
2012 J jnl
Emotion Recognition: Empirical Studies towards the Combination of Audio-Lingual and Visual-Facial Modalities through Multi-Attribute Decision Making.
Int. J. Artif. Intell. Tools
Maria Virvou, George A. Tsihrintzis, Efthymios Alepis, Ioanna-Ourania Stathopoulou, Katerina Kabassi
2012 — conf
Evaluation of MPEG-7 Descriptors for Speech Emotional Recognition.
IIH-MSP
Aristomenis S. Lampropoulos, George A. Tsihrintzis
2012 B conf
Evaluation of a Cascade Hybrid Recommendation as a Combination of One-Class Classification and Collaborative Filtering.
ICTAI
Aristomenis S. Lampropoulos, Dionisios N. Sotiropoulos, George A. Tsihrintzis
2012 J jnl
Guest Editorial.
Int. J. Artif. Intell. Tools
George A. Tsihrintzis, Maria Virvou, Ioannis Hatzilygeroudis
2012 — conf
Knowledge acquisition for the further development of e-Government.
JCKBSE
Stamatios Theocharis, George A. Tsihrintzis
2012 — conf
Markerless Human Motion Tracking: A Survey.
JCKBSE
Ioanna-Ourania Stathopoulou, George A. Tsihrintzis
2012 — conf
Optimization of an Automatic Music Genre Classification System via Hyper-Entities.
IIH-MSP
George V. Karkavitsas, George A. Tsihrintzis
2012 — ed.
e-Business and Telecommunications - 7th International Joint Conference, ICETE 2010, Athens, Greece, July 26-28, 2010, Revised Selected Papers
ICETE (Selected Papers)
Mohammad S. Obaidat, George A. Tsihrintzis, Joaquim Filipe
2011 — conf
A Movie Recommender System based on Ensemble of Transductive SVM Classifiers.
IJCCI (NCTA)
Aristomenis S. Lampropoulos, Paraskevi S. Lampropoulou, George A. Tsihrintzis
2011 J jnl
Appearance-based face detection with artificial neural networks.
Intell. Decis. Technol.
Ioanna-Ourania Stathopoulou, George A. Tsihrintzis
2011 — conf
Artificial immune system-based classification in class-imbalanced problems.
EAIS
Dionisios N. Sotiropoulos, George A. Tsihrintzis
2011 — ed.
SIGMAP 2011 - Proceedings of the International Conference on Signal Processing and Multimedia Applications, Seville, Spain, 18-21 July, 2011, SIGMAP is part of ICETE - The International Joint Conference on e-Business and Telecommunications
SIGMAP
Alejandro Linares-Barranco, George A. Tsihrintzis
2011 J jnl
Special issue: Knowledge-based Environments and Services in Human-Computer Interaction.
Intell. Decis. Technol.
George A. Tsihrintzis, Maria Virvou
2010 B conf
A framework for evaluation of middleware systems of mobile multimedia services.
SMC
Paraskevi S. Lampropoulou, Aristomenis S. Lampropoulos, George A. Tsihrintzis
2010 — conf
Audio-lingual and Visual-facial Emotion Recognition: Towards a Bi-modal Interaction System.
ICTAI (2)
Efthymios Alepis, Ioanna-Ourania Stathopoulou, Maria Virvou, George A. Tsihrintzis, Katerina Kabassi
2010 J jnl
Music genre classification based on ensemble of signals produced by source separation methods.
Intell. Decis. Technol.
Aristomenis S. Lampropoulos, Paraskevi S. Lampropoulou, George A. Tsihrintzis
2010 J jnl
On assisting a visual-facial affect recognition system with keyboard-stroke pattern information.
Knowl. Based Syst.
Ioanna-Ourania Stathopoulou, Efthymios Alepis, George A. Tsihrintzis, Maria Virvou
2010 — ed.
SIGMAP 2010 - Proceedings of the International Conference on Signal Processing and Multimedia Applications, Athens, Greece, July 26-28, 2010, SIGMAP is part of ICETE - The International Joint Conference on e-Business and Telecommunications
SIGMAP
George A. Tsihrintzis, Maria Virvou
2010 J jnl
Special issue on Knowledge-based Modes of Human-Computer Interaction.
Intell. Decis. Technol.
Maria Virvou, George A. Tsihrintzis
2010 — book
Visual Affect Recognition
Ioanna-Ourania Stathopoulou, George A. Tsihrintzis
2009 — conf
A Back End System for Digital Image Library Organization Based on Concept Learning.
ITNG
Paraskevi S. Lampropoulou, Dionisios N. Sotiropoulos, Aristomenis S. Lampropoulos, George A. Tsihrintzis
2009 — conf
A Mobile Music Recommender System based on a Two-level Genre-Rating SVM Classifier enhanced by Collaborative Filtering.
KES IIMSS
Paraskevi S. Lampropoulou, Aristomenis S. Lampropoulos, George A. Tsihrintzis
2009 — conf
Comparative performance evaluation of classifiers for Facial Expression Recognition.
KES IIMSS
Aristomenis S. Lampropoulos, Ioanna-Ourania Stathopoulou, George A. Tsihrintzis
2009 J jnl
Intelligent mobile content-based retrieval from digital music libraries.
Intell. Decis. Technol.
Paraskevi S. Lampropoulou, Aristomenis S. Lampropoulos, George A. Tsihrintzis
2009 — conf
On Assisting a Visual-Facial Affect Recognition System with Keyboard-Stroke Pattern Information.
SGAI Conf.
Ioanna-Ourania Stathopoulou, Efthymios Alepis, George A. Tsihrintzis, Maria Virvou
2008 — ch.
Artificial Immune System-Based Music Genre Classification.
New Directions in Intelligent Interactive Multimedia
Dionisios N. Sotiropoulos, Aristomenis S. Lampropoulos, George A. Tsihrintzis
2008 — conf
Clustering for user modeling in recommender e-commerce application: A RUP-based intelligent software life-cycle.
JCKBSE
Anastasios Savvopoulos, Maria Virvou, Dionisios N. Sotiropoulos, George A. Tsihrintzis
2008 — ch.
Comparative Performance Evaluation of Artificial Neural Network-Based vs. Human Facial Expression Classifiers for Facial Expression Recognition.
New Directions in Intelligent Interactive Multimedia
Ioanna-Ourania Stathopoulou, George A. Tsihrintzis
2008 — book
Computational Intelligence Paradigms, Innovative Applications
Computational Intelligence Paradigms
Lakhmi C. Jain, Mika Sato-Ilic, Maria Virvou, George A. Tsihrintzis, Valentina Emilia Balas, Canicious Abeynayake
2008 — conf
Designing a multi-modal affective knowledge-based user interface: combining empirical studies.
JCKBSE
Maria Virvou, George A. Tsihrintzis, Efthymios Alepis, Ioanna-Ourania Stathopoulou
2008 — ch.
Evaluation Process and Results of a Middleware System for Accessing Digital Music LIbraries in MObile Services.
New Directions in Intelligent Interactive Multimedia
Paraskevi S. Lampropoulou, Aristomenis S. Lampropoulos, George A. Tsihrintzis
2008 — conf
Evaluation of a Middleware System for Accessing Digital Music Libraries in Mobile Services.
ITNG
Paraskevi S. Lampropoulou, Aristomenis S. Lampropoulos, George A. Tsihrintzis
2008 J jnl
MUSIPER: a system for modeling music similarity perception based on objective feature subset selection.
User Model. User Adapt. Interact.
Dionisios N. Sotiropoulos, Aristomenis S. Lampropoulos, George A. Tsihrintzis
2008 — ch.
Musical Instrument Category Discrimination Using Wavelet-Based Source Separation.
New Directions in Intelligent Interactive Multimedia
Paraskevi S. Lampropoulou, Aristomenis S. Lampropoulos, George A. Tsihrintzis
2008 — book
New Directions in Intelligent Interactive Multimedia
New Directions in Intelligent Interactive Multimedia
George A. Tsihrintzis, Maria Virvou, Robert J. Howlett, Lakhmi C. Jain
2008 — conf
On Improving Visual-Facial Emotion Recognition with Audio-lingual and Keyboard Stroke Pattern Information.
Web Intelligence
George A. Tsihrintzis, Maria Virvou, Ioanna-Ourania Stathopoulou, Efthymios Alepis
2008 — conf
Personalized content-based retrieval in mobile music services.
JCKBSE
Paraskevi S. Lampropoulou, Aristomenis S. Lampropoulos, George A. Tsihrintzis
2008 J jnl
Specifying the personalization reasoning mechanism for an intelligent medical e-learning system on Atheromatosis: An empirical study.
Intell. Decis. Technol.
Katerina Kabassi, Maria Virvou, George A. Tsihrintzis, Yiannis Vlachos, Despina Perrea
2008 — conf
Towards Improving Visual-Facial Emotion Recognition through Use of Complementary Keyboard-Stroke Pattern Information.
ITNG
George A. Tsihrintzis, Maria Virvou, Efthymios Alepis, Ioanna-Ourania Stathopoulou
2008 — ch.
User Modelling Sharing for Adaptive e-Learning and Intelligent Help.
Personalization Techniques and Recommender Systems
Katerina Kabassi, Maria Virvou, George A. Tsihrintzis
2008 C conf
Using agents for feature extraction: Content based image retrieval for medical applications.
BIBE
Angeliki D. Theodosi, George A. Tsihrintzis
2007 — conf
A Neural Network-based System for Face Detection in Low Quality Web Camera Images.
SIGMAP
Ioanna-Ourania Stathopoulou, George A. Tsihrintzis
2007 — conf
Combining Empirical Studies of Audio-Lingual and Visual-Facial Modalities for Emotion Recognition.
KES (2)
Maria Virvou, George A. Tsihrintzis, Efthymios Alepis, Ioanna-Ourania Stathopoulou, Katerina Kabassi
2007 — conf
Constructing Stereotypes for an Adaptive e-Shop Using AIN-Based Clustering.
ICANNGA (1)
Maria Virvou, Anastasios Savvopoulos, George A. Tsihrintzis, Dionisios N. Sotiropoulos
2007 — conf
E-Learning for Health Issues Based on Rule-Based Reasoning and Multi-Criteria Decision Making .
ICSOFT (SE)
Katerina Kabassi, Maria Virvou, George A. Tsihrintzis
2007 — conf
Evaluation of Modeling Music Similarity Perception Via Feature Subset Selection.
User Modeling
Dionisios N. Sotiropoulos, Aristomenis S. Lampropoulos, George A. Tsihrintzis
2007 — conf
NEU-FACES: A Neural Network-Based Face Image Analysis System.
ICANNGA (2)
Ioanna-Ourania Stathopoulou, George A. Tsihrintzis
2007 — conf
Recent Developments in Automated Inferencing of Emotional State from Face Images.
ICSOFT/ENASE (Selected Papers)
Ioanna-Ourania Stathopoulou, George A. Tsihrintzis
2007 — conf
Towards Automated Inferencing of Emotional State from Face Images.
ICSOFT (PL/DPS/KE/MUSE)
Ioanna-Ourania Stathopoulou, George A. Tsihrintzis
2007 J jnl
Web Services User Model Server Performing Decision Making.
Int. J. Pattern Recognit. Artif. Intell.
Katerina Kabassi, Maria Virvou, George A. Tsihrintzis
2006 — conf
ALIMOS: A Middleware System for
KES (1)
Paraskevi S. Lampropoulou, Aristomenis S. Lampropoulos, George A. Tsihrintzis
2006 — conf
Artificial Immune System-Based Customer Data Clustering in an e-Shopping Application.
KES (1)
Dionisios N. Sotiropoulos, George A. Tsihrintzis, Anastasios Savvopoulos, Maria Virvou
2006 — conf
Facial Expression Classification: Specifying Requirements for an Automated System.
KES (2)
Ioanna-Ourania Stathopoulou, George A. Tsihrintzis
2006 — conf
Hybrid Intelligent Medical Tutor for Atheromatosis.
KES (2)
Katerina Kabassi, Maria Virvou, George A. Tsihrintzis
2006 — conf
INMA: A Knowledge-Based Authoring Tool for Music Education.
KES (1)
Maria Virvou, Aristomenis S. Lampropoulos, George A. Tsihrintzis
2005 — conf
A Middleware System for Web-Based Digital Music Libraries.
Web Intelligence
Aristomenis S. Lampropoulos, Paraskevi S. Lampropoulou, George A. Tsihrintzis
2005 — conf
Evaluation of the discrimination power of features extracted from 2-D and 3-D facial images for facial expression analysis.
EUSIPCO
Ioanna-Ourania Stathopoulou, George A. Tsihrintzis
2005 — conf
Musical Genre Classification Enhanced by Improved Source Separation Technique.
ISMIR
Aristomenis S. Lampropoulos, Paraskevi S. Lampropoulou, George A. Tsihrintzis
2004 — conf
An improved neural-network-based face detection and facial expression classification system.
SMC (1)
Ioanna-Ourania Stathopoulou, George A. Tsihrintzis
2004 — conf
Individualization of music similarity perception via feature subset selection.
SMC (1)
Aristomenis S. Lampropoulos, Dionisios N. Sotiropoulos, George A. Tsihrintzis
2002 — conf
Overview of Wave Probe-Based High-Resolution Subsurface Sensing, Imaging, and Vision.
SETN
George A. Tsihrintzis, Konstantinos G. Girtis
2000 J jnl
A Volterra series approach to nonlinear traveltime tomography.
IEEE Trans. Geosci. Remote. Sens.
George A. Tsihrintzis, Anthony J. Devaney
2000 J jnl
Higher order (nonlinear) diffraction tomography: Inversion of the Rytov series.
IEEE Trans. Inf. Theory
George A. Tsihrintzis, Anthony J. Devaney
2000 Misc conf
Higher-order (nonlinear) diffraction tomography.
ICASSP
George A. Tsihrintzis, Anthony J. Devaney
2000 J jnl
Higher-order (nonlinear) diffraction tomography: reconstruction algorithms and computer simulation.
IEEE Trans. Image Process.
George A. Tsihrintzis, Anthony J. Devaney
2000 — conf
Inverse scattering via linear and nonlinear tomography - A review.
EUSIPCO
George A. Tsihrintzis
1999 J jnl
Estimation of object location from wideband scattering data.
IEEE Trans. Image Process.
George A. Tsihrintzis, Anthony J. Devaney, Ehud Heyman
1998 Misc conf
Estimation of object location from short pulse scatter data.
ICASSP
George A. Tsihrintzis, Anthony J. Devaney, Ehud Heyman
1998 — conf
Spectral methods for stationary harmonizable alpha-stable processes.
EUSIPCO
George A. Tsihrintzis, Panagiotis Tsakalides, Chrysostomos L. Nikias
1997 J jnl
Data-adaptive algorithms for signal detection in sub-Gaussian impulsive interference.
IEEE Trans. Signal Process.
George A. Tsihrintzis, Chrysostomos L. Nikias
1997 J jnl
Robust thermophysics-based interpretation of radiometrically uncalibrated IR images for ATR and site change detection.
IEEE Trans. Image Process.
Nagaraj Nandhakumar, Jonathan D. Michel, D. Gregory Arnold, George A. Tsihrintzis, Vincent J. Velten
1996 J jnl
Fast estimation of the parameters of alpha-stable impulsive interference.
IEEE Trans. Signal Process.
George A. Tsihrintzis, Chrysostomos L. Nikias
1996 J jnl
Self-similar set identification in the time-scale domain.
IEEE Trans. Signal Process.
Sam Heidari, George A. Tsihrintzis, Chrysostomos L. Nikias, Edmond A. Jonckheere
1995 J jnl
Detection of impulsive stochastic transients over background noise.
Signal Process.
George A. Tsihrintzis, Chrysostomos L. Nikias
1995 J jnl
Exact maximum likelihood identification of MA(1) systems driven by Cauchy noise of unknown dispersion.
IEEE Signal Process. Lett.
George A. Tsihrintzis, Chrysostomos L. Nikias
1995 Misc conf
Fast estimation of the parameters of alpha-stable impulsive interference using asymptotic extreme value theory.
ICASSP
George A. Tsihrintzis, Chrysostomos L. Nikias
1995 J jnl
Incoherent receivers in alpha-stable impulsive noise.
IEEE Trans. Signal Process.
George A. Tsihrintzis, Chrysostomos L. Nikias
1995 J jnl
Performance of optimum and suboptimum receivers in the presence of impulsive noise modeled as an alpha-stable process.
IEEE Trans. Commun.
George A. Tsihrintzis, Chrysostomos L. Nikias
1994 J jnl
Stochastic geophysical diffraction tomography.
Int. J. Imaging Syst. Technol.
George A. Tsihrintzis, Anthony J. Devaney
1993 J jnl
Application of a maximum likelihood estimator in an experimental study in ultrasonic diffraction tomography.
IEEE Trans. Medical Imaging
George A. Tsihrintzis, Anthony J. Devaney
1993 J jnl
Stochastic diffraction tomography: Theory and computer simulation.
Signal Process.
George A. Tsihrintzis, Anthony J. Devaney
1991 J jnl
Estimation of object location from diffraction tomographic intensity data.
IEEE Trans. Signal Process.
George A. Tsihrintzis, Anthony J. Devaney
1991 J jnl
Maximum likelihood estimation of object location in diffraction tomography.
IEEE Trans. Signal Process.
Anthony J. Devaney, George A. Tsihrintzis
1991 J jnl
Maximum likelihood estimation of object location in diffraction tomography. II. Strongly scattering objects.
IEEE Trans. Signal Process.
George A. Tsihrintzis, Anthony J. Devaney
1990 J jnl
Contour reconstruction in diffraction tomography.
Int. J. Imaging Syst. Technol.
Kostas T. Ladas, George A. Tsihrintzis