Dimitris Spiliotopoulos

90 papers B 11C 5Journal 34Unranked 39

Year	Rank	Type	Title / Venue / Authors
2026	J	`jnl`	A Large-Scale Empirical Study of LLM Orchestration and Ensemble Strategies for Sentiment Analysis in Recommender Systems. Future Internet Konstantinos I. Roumeliotis, Dionisis Margaris, Dimitris Spiliotopoulos, Costas Vassilakis
2026	J	`jnl`	Optimizing Collaborative Filtering for Accurate Rating Predictions in Very Sparse Datasets. Future Internet Sofia-Anna Lapadaki, John Nanos, Dionisis Margaris, Costas Vassilakis, Dimitris Spiliotopoulos
2025	J	`jnl`	AI and Related Technologies in the Fields of Smart Agriculture: A Review. Inf. Fotis Assimakopoulos, Costas Vassilakis, Dionisis Margaris, Konstantinos Kotis, Dimitris Spiliotopoulos
2025	J	`jnl`	An evaluation review of user similarity metrics in sparse collaborative filtering datasets. Int. J. Data Sci. Anal. Kiriakos Sgardelis, Dionisis Margaris, Dimitris Spiliotopoulos, Costas Vassilakis
2025	J	`jnl`	From Rating Predictions to Reliable Recommendations in Collaborative Filtering: The Concept of Recommendation Reliability Classes. Big Data Cogn. Comput. Dionisis Margaris, Costas Vassilakis, Dimitris Spiliotopoulos
2024	J	`jnl`	Assessment of Purchasing Influence of Email Campaigns Using Eye Tracking. Multimodal Technol. Interact. Evangelia Skourou, Dimitris Spiliotopoulos
2024	J	`jnl`	Exploiting Rating Prediction Certainty for Recommendation Formulation in Collaborative Filtering. Big Data Cogn. Comput. Dionisis Margaris, Kiriakos Sgardelis, Dimitris Spiliotopoulos, Costas Vassilakis
2024	C	`conf`	Improving Recommendation Quality in Collaborative Filtering by Including Prediction Confidence Factors. WEBIST Kiriakos Sgardelis, Dionisis Margaris, Dimitris Spiliotopoulos, Costas Vassilakis, Stefanos Ougiaroglou
2024	—	`conf`	Predicting Agricultural Product and Supplies Prices Using Artificial Intelligence. KMIS Ioannis Dionissopoulos, Fotis Assimakopoulos, Dimitris Spiliotopoulos, Dionisis Margaris, Costas Vassilakis
2024	J	`jnl`	The Implementation of "Smart" Technologies in the Agricultural Sector: A Review. Inf. Fotis Assimakopoulos, Costas Vassilakis, Dionisis Margaris, Konstantinos Kotis, Dimitris Spiliotopoulos
2023	C	`conf`	A User Interface for Tuning QoS Parameters in Recommendation-Based Business Process Scenario Adaptation. WEBIST Kiriakos Sgardelis, Dionisis Margaris, Dimitris Spiliotopoulos, Costas Vassilakis
2023	J	`jnl`	Chatbots for Cultural Venues: A Topic-Based Approach. Algorithms Vasilis Bouras, Dimitris Spiliotopoulos, Dionisis Margaris, Costas Vassilakis, Konstantinos Kotis, Angeliki Antoniou, George Lepouras, Manolis Wallace, Vassilis Poulopoulos
2023	J	`jnl`	Disruptive Technologies for Parliaments: A Literature Review. Future Internet Dimitris Koryzis, Dionisis Margaris, Costas Vassilakis, Konstantinos Kotis, Dimitris Spiliotopoulos
2023	J	`jnl`	Improving collaborative filtering's rating prediction accuracy by introducing the experiencing period criterion. Neural Comput. Appl. Dionisis Margaris, Dimitris Spiliotopoulos, Costas Vassilakis, Dionysios Vasilopoulos
2023	J	`jnl`	Rating Prediction Quality Enhancement in Low-Density Collaborative Filtering Datasets. Big Data Cogn. Comput. Dionisis Margaris, Costas Vassilakis, Dimitris Spiliotopoulos, Stefanos Ougiaroglou
2022	—	`conf`	A Quality of Experience Illustrator User Interface for Cloud Provider Recommendations. HCI (37) Panagiotis C. Kokkinos, Dionisis Margaris, Dimitris Spiliotopoulos
2022	—	`conf`	Anchoring Effect Mitigation for Complex Recommender System Design. HCI (41) Dionisis Margaris, Dimitris Spiliotopoulos, Costas Vassilakis
2022	J	`jnl`	On Exploiting Rating Prediction Accuracy Features in Dense Collaborative Filtering Datasets. Inf. Dimitris Spiliotopoulos, Dionisis Margaris, Costas Vassilakis
2022	J	`jnl`	On Producing Accurate Rating Predictions in Sparse Collaborative Filtering Datasets. Inf. Dionisis Margaris, Costas Vassilakis, Dimitris Spiliotopoulos
2022	—	`conf`	Persona Finetuning for Online Gaming Using Personalisation Techniques. HCI (42) Dimitris Spiliotopoulos, Dionisis Margaris, Kostas N. Koutrakis, Panos I. Philippopoulos, Costas Vassilakis
2021	—	`conf`	A User Interface for Personalising WS-BPEL Scenarios. HCI (22) Dionisis Margaris, Dimitris Spiliotopoulos, Dionysios Vasilopoulos, Costas Vassilakis
2021	—	`conf`	An Interface for User-Centred Process and Correlation Between Large Datasets. HCI (18) Dimitris Spiliotopoulos, Tauheodoros Giannakopoulos, Costas Vassilakis, Manolis Wallace, Marina Lantzouni, Vassilis Poulopoulos, Dionisis Margaris
2021	J	`jnl`	On Addressing the Low Rating Prediction Coverage in Sparse Datasets Using Virtual Ratings. SN Comput. Sci. Dionisis Margaris, Dimitris Spiliotopoulos, Gregory Karagiorgos, Costas Vassilakis, Dionysios Vasilopoulos
2021	J	`jnl`	ParlTech: Transformation Framework for the Digital Parliament. Big Data Cogn. Comput. Dimitris Koryzis, Apostolos Dalas, Dimitris Spiliotopoulos, Fotios Fitsilis
2021	J	`jnl`	Semantic Trajectory Analytics and Recommender Systems in Cultural Spaces. Big Data Cogn. Comput. Sotiris Angelis, Konstantinos Kotis, Dimitris Spiliotopoulos
2020	—	`conf`	"Talking" Triples to Museum Chatbots. HCI (35) Savvas Varitimiadis, Konstantinos Kotis, Dimitris Spiliotopoulos, Costas Vassilakis, Dionisis Margaris
2020	J	`jnl`	A Semantic Mixed Reality Framework for Shared Cultural Experiences Ecosystems. Big Data Cogn. Comput. Costas Vassilakis, Konstantinos Kotis, Dimitris Spiliotopoulos, Dionisis Margaris, Vlasios Kasapakis, Christos-Nikolaos Anagnostopoulos, Georgios M. Santipantakis, George A. Vouros, Theodore Kotsilieris, Volha Petukhova, Andrei Malchanau, Ioanna Lykourentzou, Kaj Michael Helin, Artem Revenko, Nenad Gligoric, Boris Pokric
2020	—	`conf`	A User Interface for Personalized Web Service Selection in Business Processes. HCI (45) Dionisis Margaris, Dimitris Spiliotopoulos, Costas Vassilakis, Gregory Karagiorgos
2020	J	`jnl`	A fine-grained social network recommender system. Soc. Netw. Anal. Min. Markos Aivazoglou, Antonios O. Roussos, Dionisis Margaris, Costas Vassilakis, Sotiris Ioannidis, Jason Polakis, Dimitris Spiliotopoulos
2020	J	`jnl`	An Adaptive Social Network-Aware Collaborative Filtering Algorithm for Improved Rating Prediction Accuracy. IEEE Access Dionisis Margaris, Anna Kobusinska, Dimitris Spiliotopoulos, Costas Vassilakis
2020	J	`jnl`	An Algorithm for Density Enrichment of Sparse Collaborative Filtering Datasets Using Robust Predictions as Derived Ratings. Algorithms Dionisis Margaris, Dimitris Spiliotopoulos, Gregory Karagiorgos, Costas Vassilakis
2020	J	`jnl`	An integer programming-based algorithm for optimising the WS-BPEL scenario execution adaptation process. Int. J. Web Eng. Technol. Dionisis Margaris, Dimitris Spiliotopoulos, Apostolos Kardiasmenos, Dimitrios Pantazopoulos
2020	J	`jnl`	Data-Assisted Persona Construction Using Social Media Data. Big Data Cogn. Comput. Dimitris Spiliotopoulos, Dionisis Margaris, Costas Vassilakis
2020	B	`conf`	Database Knowledge Enrichment Utilizing Trending Topics from Twitter. ASONAM Costas Vassilakis, Dimitra Maniataki, George Lepouras, Angeliki Antoniou, Dimitris Spiliotopoulos, Vassilis Poulopoulos, Manolis Wallace, Dionisis Margaris
2020	J	`jnl`	Human behaviour in multimodal interaction: main effects of civic action and interpersonal and problem-solving skills. J. Ambient Intell. Humaniz. Comput. Eleni Makri, Dimitris Spiliotopoulos, Costas Vassilakis, Dionisis Margaris
2020	—	`conf`	MOOC Accessibility from the Educator Perspective. HCI (44) Dimitris Spiliotopoulos, Vassilis Poulopoulos, Dionisis Margaris, Eleni Makri, Costas Vassilakis
2020	J	`jnl`	Multimodal Interaction: Correlates of Learners' Metacognitive Skill Training Negotiation Experience. Inf. Dimitris Spiliotopoulos, Eleni Makri, Costas Vassilakis, Dionisis Margaris
2020	B	`conf`	Neighbourhood Aging Factors for Limited Information Social Network Collaborative Filtering. ASONAM Dionisis Margaris, Dimitris Spiliotopoulos, Costas Vassilakis
2020	B	`conf`	On Recommending Safe Travel Periods to High Attack Risk Destinations. ASONAM Dimitris Spiliotopoulos, Costas Vassilakis, Dionisis Margaris
2020	J	`jnl`	Ontology engineering methodologies for the evolution of living and reused ontologies: status, trends, findings and recommendations. Knowl. Eng. Rev. Konstantinos I. Kotis, George A. Vouros, Dimitris Spiliotopoulos
2020	—	`conf`	Policy Making Analysis and Practitioner User Experience. HCI (41) Dimitris Koryzis, Fotios Fitsilis, Dimitris Spiliotopoulos, Theocharis Theocharopoulos, Dionisis Margaris, Costas Vassilakis
2020	—	`conf`	Semantics-Driven Conversational Interfaces for Museum Chatbots. HCI (35) Dimitris Spiliotopoulos, Konstantinos Kotis, Costas Vassilakis, Dionisis Margaris
2020	—	`conf`	Voice User Interfaces for Service Robots: Design Principles and Methodology. HCI (8) Pepi Stavropoulou, Dimitris Spiliotopoulos, Georgios Kouroupetroglou
2020	J	`jnl`	What makes a review a reliable rating in recommender systems? Inf. Process. Manag. Dionisis Margaris, Costas Vassilakis, Dimitris Spiliotopoulos
2019	—	`conf`	A Methodology for Generated Text Annotation for High Quality Speech Synthesis. IISA Dimitris Spiliotopoulos, Costas Vassilakis, Dionisis Margaris, Konstantinos Kotis
2019	C	`conf`	A Mixed-reality Interaction-driven Game-based Learning Framework. MEDES Dimitris Spiliotopoulos, Dionisis Margaris, Costas Vassilakis, Volha Petukhova, Konstantinos Kotis
2019	C	`conf`	Citizen Engagement for Transparent and Accountable Policy Modelling. MEDES Dimitris Spiliotopoulos, Dionisis Margaris, Costas Vassilakis
2019	B	`conf`	Data-driven country safety monitoring terrorist attack prediction. ASONAM Dimitris Spiliotopoulos, Costas Vassilakis, Dionisis Margaris
2019	J	`jnl`	Handling uncertainty in social media textual information for improving venue recommendation formulation quality in social networks. Soc. Netw. Anal. Min. Dionisis Margaris, Costas Vassilakis, Dimitris Spiliotopoulos
2019	—	`conf`	Improving Collaborative Filtering's Rating Prediction Accuracy by Introducing the Common Item Rating Past Criterion. IISA Dionisis Margaris, Dionysios Vasilopoulos, Costas Vassilakis, Dimitris Spiliotopoulos
2019	—	`conf`	Improving Collaborative Filtering's Rating Prediction Coverage in Sparse Datasets through the Introduction of Virtual Near Neighbors. IISA Dionisis Margaris, Dionysios Vasilopoulos, Costas Vassilakis, Dimitris Spiliotopoulos
2019	B	`conf`	Improving Collaborative Filtering's Rating Prediction Quality by Exploiting the Item Adoption Eagerness Information. WI Dionisis Margaris, Dimitris Spiliotopoulos, Costas Vassilakis
2019	B	`conf`	Social relations versus near neighbours: reliable recommenders in limited information social network collaborative filtering for online advertising. ASONAM Dionisis Margaris, Dimitris Spiliotopoulos, Costas Vassilakis
2018	B	`conf`	The Metalogue Debate Trainee Corpus: Data Collection and Annotations. LREC Volha Petukhova, Andrei Malchanau, Youssef Oualil, Dietrich Klakow, Saturnino Luz, Fasih Haider, Nick Campbell, Dimitris Koryzis, Dimitris Spiliotopoulos, Pierre Albert, Nicklas Linz, Jan Alexandersson
2017	—	`conf`	Implementing Digital Parliament Innovative Concepts for Citizens and Policy Makers. HCI (23) Fotios Fitsilis, Dimitris Koryzis, Vasilios Svolopoulos, Dimitris Spiliotopoulos
2017	B	`conf`	Reveal: Fine-grained Recommendations in Online Social Networks. ASONAM Markos Aivazoglou, Orestis Roussos, Sotiris Ioannidis, Dimitris Spiliotopoulos, Jason Polakis
2016	B	`conf`	Investigating the complete corpus of referendum and elections tweets. ASONAM Despoina Antonakaki, Dimitris Spiliotopoulos, Christos V. Samaras, Sotiris Ioannidis, Paraskevi Fragopoulou
2016	—	`conf`	Metalogue: A Multimodal Learning Journey. PETRA Dimitris Koryzis, Vasileios Svolopoulos, Dimitris Spiliotopoulos
2016	—	`conf`	Motivation Effect of Social Media Posts about Well-being and Healthy Living. PETRA Dimitris Spiliotopoulos, Despoina Antonakaki, Sotiris Ioannidis, Paraskevi Fragopoulou
2016	—	`conf`	Usability Evaluation of Accessible Complex Graphs. ICCHP (1) Dimitris Spiliotopoulos, Despoina Antonakaki, Sotiris Ioannidis, Paraskevi Fragopoulou
2015	—	`conf`	Enhancing the Trustworthiness of Service On-Demand Systems via Smart Vote Filtering. TRUST Christos V. Samaras, Ageliki Tsioliaridou, Christos Liaskos, Dimitris Spiliotopoulos, Sotiris Ioannidis
2015	—	`conf`	Speech Enabled Ontology Graph Navigation and Editing. HCI (7) Dimitris Spiliotopoulos, Athanasios Dalianis, Dimitris Koryzis
2014	—	`conf`	Accessibility Driven Design for Policy Argumentation Modelling. HCI (7) Dimitris Spiliotopoulos, Athanasios Dalianis, Georgios Kouroupetroglou
2014	J	`jnl`	Analysing and Enriching Focused Semantic Web Archives for Parliament Applications. Future Internet Elena Demidova, Nicola Barbieri, Stefan Dietze, Adam Funk, Helge Holzmann, Diana Maynard, Nikolaos Papailiou, Wim Peters, Thomas Risse, Dimitris Spiliotopoulos
2014	J	`jnl`	CASAM: collaborative human-machine annotation of multimedia. Multim. Tools Appl. Robert J. Hendley, Russell Beale, Chris P. Bowers, Christos Georgousopoulos, Charalampos Vassiliou, Sergios Petridis, Ralf Möller, Eric Karstens, Dimitris Spiliotopoulos
2014	B	`conf`	Metalogue: A Multiperspective Multimodal Dialogue System with Metacognitive Abilities for Highly Adaptive and Flexible Dialogue Management. Intelligent Environments Jan Alexandersson, Maria Aretoulaki, Nick Campbell, Michael Gardner, Andrey Girenko, Dietrich Klakow, Dimitris Koryzis, Volha Petukhova, Marcus Specht, Dimitris Spiliotopoulos, Alexander Stricker, Niels Taatgen
2014	—	`conf`	Need Driven Prototype Design for a Policy Modeling Authoring Interface. HCI (9) Dimitris Spiliotopoulos, Athanasios Dalianis, Dimitris Koryzis
2014	—	`conf`	Pilot Scenario Design for Evaluating a Metacognitive Skills Learning Dialogue System. HCI (27) Dimitris Spiliotopoulos, Olga Petukhova, Dimitris Koryzis, Maria Aretoulaki
2014	—	`conf`	Sentiment Analysis for Reputation Management: Mining the Greek Web. SETN Georgios Petasis, Dimitris Spiliotopoulos, Nikos Tsirakis, Panayotis Tsantilas
2014	J	`jnl`	The ARCOMEM Architecture for Social- and Semantic-Driven Web Archiving. Future Internet Thomas Risse, Elena Demidova, Stefan Dietze, Wim Peters, Nikolaos Papailiou, Katerina Doka, Yannis Stavrakas, Vassilis Plachouras, Pierre Senellart, Florent Carpentier, Amin Mantrach, Bogdan Cautis, Patrick Siehndel, Dimitris Spiliotopoulos
2013	—	`conf`	Digital Archives: Semantic Search and Retrieval. CHI-KDD Dimitris Spiliotopoulos, Efstratios Tzoannos, Cosmin Cabulea, Dominik Frey
2013	—	`conf`	On the Identification and Annotation of Emotional Properties of Verbs. OTM Workshops Nikolaos Papatheodorou, Pepi Stavropoulou, Dimitrios Tsonos, Georgios Kouroupetroglou, Dimitris Spiliotopoulos, Charalambos C. Papageorgiou
2013	—	`conf`	SMS 2013 PC Co-Chairs Message. OTM Workshops Dimitris Spiliotopoulos, Thomas Risse, Nina Tahmasebi
2013	—	`conf`	Usability Design and Testing of an Interface for Search and Retrieval of Social Web Data. HCI (12) Dimitris Spiliotopoulos, Ruben Bouwmeester, Georgios Kouroupetroglou, Pepi Stavropoulou, Dimitrios Tsonos
2013	—	`conf`	User Perception Knowledge for Socially-Aware Web Document Accessibility. HCI (7) Dimitris Spiliotopoulos, Pepi Stavropoulou, Georgios Kouroupetroglou, Dimitrios Tsonos
2012	—	`conf`	Designing User Interfaces for Social Media Driven Digital Preservation and Information Retrieval. ICCHP (1) Dimitris Spiliotopoulos, Efstratios Tzoannos, Pepi Stavropoulou, Georgios Kouroupetroglou, Alexandros Pino
2012	B	`conf`	Resource Evaluation for Usable Speech Interfaces: Utilizing Human-Human Dialogue. LREC Pepi Stavropoulou, Dimitris Spiliotopoulos, Georgios Kouroupetroglou
2011	—	`conf`	Acoustic Modeling of Dialogue Elements for Document Accessibility. HCI (8) Pepi Stavropoulou, Dimitris Spiliotopoulos, Georgios Kouroupetroglou
2010	—	`conf`	An Open Source / Freeware Assistive Technology Software Inventory. ICCHP (1) Alexandros Pino, Georgios Kouroupetroglou, Hernisa Kacorri, Anna Sarantidou, Dimitris Spiliotopoulos
2010	J	`jnl`	Auditory universal accessibility of data tables using naturally derived prosody specification. Univers. Access Inf. Soc. Dimitris Spiliotopoulos, Gerasimos Xydas, Georgios Kouroupetroglou, Vassilis Argyropoulos, Kalliopi Ikospentaki
2010	C	`conf`	Integrating Contrast in a Framework for Predicting Prosody. CICLing Pepi Stavropoulou, Dimitris Spiliotopoulos, Georgios Kouroupetroglou
2009	—	`conf`	Acoustic Rendering of Data Tables Using Earcons and Prosody for Document Accessibility. HCI (7) Dimitris Spiliotopoulos, Panagiota Stavropoulou, Georgios Kouroupetroglou
2009	—	`conf`	Spoken Dialogue Interfaces: Integrating Usability. USAB Dimitris Spiliotopoulos, Pepi Stavropoulou, Georgios Kouroupetroglou
2009	J	`jnl`	Usability Methodologies for Real-Life Voice User Interfaces. Int. J. Inf. Technol. Web Eng. Georgios Kouroupetroglou, Dimitris Spiliotopoulos
2009	—	`—`	Βελτίωση ποιότητας συνθετικής ομιλίας μέσω προσωδιακών χαρακτηριστικών Dimitris Spiliotopoulos
2008	—	`conf`	A Framework for Language-Independent Analysis and Prosodic Feature Annotation of Text Corpora. TSD Dimitris Spiliotopoulos, Georgios Petasis, Georgios Kouroupetroglou
2005	—	`conf`	Diction Based Prosody Modeling in Table-to-Speech Synthesis. TSD Dimitris Spiliotopoulos, Gerasimos Xydas, Georgios Kouroupetroglou
2005	J	`jnl`	Modeling Improved Prosody Generation from High-Level Linguistically Annotated Corpora. IEICE Trans. Inf. Syst. Gerasimos Xydas, Dimitris Spiliotopoulos, Georgios Kouroupetroglou
2004	—	`conf`	Modeling Prosodic Structures in Linguistically Enriched Environments. TSD Gerasimos Xydas, Dimitris Spiliotopoulos, Georgios Kouroupetroglou
2002	—	`conf`	Symbolic Authoring for Multilingual Natural Language Generation. SETN Ion Androutsopoulos, Dimitris Spiliotopoulos, Konstantinos Stamatakis, Aggeliki Dimitromanolaki, Vangelis Karkaletsis, Constantine D. Spyropoulos