About

I am an Assist. Professor at the Business Intelligence and Social Innovation (BISON) lab,
Department of Management Science and Technology, University of the Peloponnese.
My main research interests are: language analysis, computer-human interaction, usability,
accessibility, voice interaction, and social media analysis.

Publications

Journals

1. Margaris, D., Vassilakis, C., Spiliotopoulos, D., Ougiaroglou, S. 2023. Rating Prediction Quality Enhancement in Low-Density Collaborative Filtering Datasets. Big Data Cogn. Comput. 7(2), 59.
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2. Makrydakis, N., Spiliotopoulos, D. 2023. A stochastic review of the impact of artificial intelligence, machine learning and artificial neural networks in marketing. International Journal of Commerce and Management Research 9(3), 49-54.
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3. Koryzis, D., Margaris, D., Vassilakis, C., Kotis, K. Spiliotopoulos. D., 2023. Disruptive Technologies for Parliaments: A Literature Review. Future Internet 15(2), 66.
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4. Spiliotopoulos, D., Margaris, D., Vassilakis, C. 2022. On Exploiting Rating Prediction Accuracy Features in Dense Collaborative Filtering Datasets. Information 13(9), 428.
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5. Margaris, D., Vassilakis, C., Spiliotopoulos, D. 2022. On Producing Accurate Rating Predictions in Sparse Collaborative Filtering Datasets. Information 13(6), 302.
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6. Margaris, D., Spiliotopoulos, D., Karagiorgos, G., Vassilakis, C., Vasilopoulos, D. 2021. On Addressing the Low Rating Prediction Coverage in Sparse Datasets Using Virtual Ratings. SN Computer Science 2(4), 255.
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7. Angelis, S., Kotis, K., Spiliotopoulos, D. 2021. Semantic Trajectory Analytics and Recommender Systems in Cultural Spaces. Big Data Cogn. Comput. 5(4), 80.
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8. Zachila, K., Kotis, K., Paparidis, E., Ladikou, S., Spiliotopoulos, D. 2021. Facilitating Semantic Interoperability of Trustworthy IoT Entities in Cultural Spaces: The Smart Museum Ontology. IoT 2:741–760.
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9. Margaris, D., Spiliotopoulos, D., Vassilakis, C. 2021. Augmenting Black Sheep Neighbour Importance for Enhancing Rating Prediction Accuracy in Collaborative Filtering. Applied Sciences 11(18), 8369.
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10. Koryzis, D., Dalas, A., Spiliotopoulos, D., Fitsilis, F. 2021. ParlTech: Transformation Framework for the Digital Parliament. Big Data Cogn. Comput. 5(1), 15.
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11. Aivazoglou, M., Roussos, A.O., Margaris, D., Vassilakis, C., Ioannidis, S., Polakis, J., Spiliotopoulos, D. 2020. A Fine-grained Social Network Recommender System. Social Network Analysis and Mining 10(1):8.
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12. Margaris, D., Spiliotopoulos, D., Vassilakis, C., Vasilopoulos, D. 2020. Improving Collaborative Filtering’s Rating Prediction Accuracy by Introducing the Experiencing Period Criterion. Neural Computing and Applications; doi:10.1007/s00521-020-05460-y.
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13. Margaris, D., Vassilakis, C., Spiliotopoulos, D., 2020. What makes a review a reliable rating in recommender systems?. Information Processing and Management 57(6), 102304.
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14. Spiliotopoulos, D., Makri, E., Vassilakis, C., Margaris, D. 2020. Multimodal Interaction: Correlates of Learners’ Metacognitive Skill Training Negotiation Experience. Information, 11(8), 381.
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15. Spiliotopoulos, D., Margaris, D., Vasilakis, C. 2020. Data-Assisted Persona Construction Using Social Media Data. Big Data Cogn. Comput. 4(3), 21.
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16. Margaris, D., Spiliotopoulos, D., Kardiasmenos, A., Pantazopoulos, D. 2020. An integer programming-based algorithm for optimizing the WS-BPEL scenario execution adaptation process. International Journal Web Engineering Technology 15(3):307-332.
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17. Margaris, D., Spiliotopoulos, D., Karagiorgos, G., Vassilakis, C. 2020. An Algorithm for Density Enrichment of Sparse Collaborative Filtering Datasets, using Robust Predictions as Derived Ratings. Algorithms 13(7), 174.
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18. Makri, E., Spiliotopoulos, D., Vassilakis, C., Margaris, D. 2020. Human behaviour in multimodal interaction: main effects of civic action and interpersonal and problem-solving skills. Journal of Ambient Intelligence and Humanized Computing 11:5991–6006; doi:10.1007/s12652-020-01846-x.
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19. Kotis, K., Spiliotopoulos, D., Papasalouros, A. 2020. Intelligent Collaborative Authoring of Place-based, Cross-cultural and Media-rich Experiences. Challenges 11(1), 10; doi:10.3390/challe11010010.
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20. Vassilakis, C., Kotis, K., Spiliotopoulos, D., Margaris, D., Kasapakis, V., Anagnostopoulos, C.N., Santipantakis, G., Vouros, G.A., Kotsilieris, T., Petukhova, V., Malchanau, A., Lykourentzou, I., Helin, K.M., Revenko, A., Gligoric, N., Pokric, B. 2020. A Semantic Mixed Reality Framework for Shared Cultural Experiences Ecosystems. Big Data Cogn. Comput. 4(2):6; doi:10.3390/bdcc4020006.
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21. Margaris, D., Kobusińska, A., Spiliotopoulos, D., Vassilakis, C. 2020. An Adaptive Social Network-Aware Collaborative Filtering Algorithm for Improved Rating Prediction Accuracy. IEEE Access 8(1):68301-68310.
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22. Kotis, K., Vouros, G.A., Spiliotopoulos, D., 2020. Ontology engineering methodologies for the evolution of living and reused ontologies: Status, trends, findings and recommendations. The Knowledge Engineering Review 35, E4. doi:10.1017/S0269888920000065
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23. Margaris, D., Vassilakis, C., Spiliotopoulos, D., 2019. Handling uncertainty in social media textual information for improving venue recommendation formulation quality in social networks. Social Network Analysis and Mining 9(1):64.
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24. Antonakaki, D., Spiliotopoulos, D., Samaras, C.V., Pratikakis, P., Ioannidis, S., Fragopoulou, P. 2017. Social media analysis during political turbulence. PLOS ONE 12(10): e0186836, 1-23.
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25. Risse, T., Demidova, E., Dietze, S., Peters, W., Papailiou, N., Doka, K., Stavrakas, Y., Plachouras, V., Senellart, P., Carpentier, F., Mantrach, A., Cautis, B., Siehndel, P., Spiliotopoulos, D. 2014. The ARCOMEM Architecture for Social and Semantic Driven Web Archiving. Future Internet 6(4):688-716.
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26. Demidova, E., Barbieri, N., Dietze, S., Funk, A., Holzmann, H., Maynard, D., Papailiou, N., Peters, W., Risse, T., Spiliotopoulos, D. 2014. Analysing and Enriching Focused Semantic Web Archives for Parliament Applications. Future Internet 6(3):433-456.
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27. Hendley, R., Beale, R., Georgousopoulos, C., Vassiliou, C., Petridis, S., Moeller, R., Karstens, E., Spiliotopoulos, D. 2014. CASAM: Collaborative Human-Machine Annotation of Multimedia. Multimedia Tools and Applications 70(2):1277-1308.
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28. Spiliotopoulos, D., Xydas, G., Kouroupetroglou, G., Argyropoulos, V., Ikospentaki, K. 2010. Auditory Universal Accessibility of Data Tables using Naturally Derived Prosody Specification. Univ Access Inf Soc 9:169-183.
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29. Kouroupetroglou, G., Spiliotopoulos, D. 2009. Usability Methodologies for Real-Life Voice User Interfaces. Int. Journal of Information Technology and Web Engineering 4(4):78-94.
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30. Xydas, G., Spiliotopoulos, D., Kouroupetroglou, G. 2005. Modeling Improved Prosody Generation from High-Level Linguistically Annotated Corpora. IEICE Trans. of Inf. and Syst. E88-D(3):510-518.
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Conferences

1. Spiliotopoulos, D., Margaris, D., Koutrakis, K.N., Philippopoulos, P.I., Vassilakis, C. 2022. Persona Finetuning for Online Gaming Using Personalisation Techniques. In Proc. 24th International Conference on Human-Computer Interaction, LNCS 13517, pp. 656-668, Virtual, 26 June - 1 July 2022.
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2. Margaris, D., Spiliotopoulos, D., Vassilakis, C. 2022. Anchoring Effect Mitigation for Complex Recommender System Design. In Proc. 24th International Conference on Human-Computer Interaction, LNCS 13516, pp. 424-436, Virtual, 26 June - 1 July 2022.
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3. Kokkinos, P., Margaris, D., Spiliotopoulos, D. 2022. A Quality of Experience Illustrator User Interface for Cloud Provider Recommendations. In Proc. 24th International Conference on Human-Computer Interaction, CCIS 1580, pp. 308-315, Virtual, 26 June - 1 July 2022.
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4. Spiliotopoulos, D., Giannakopoulos, T., Vassilakis, C., Wallace, M., Lantzouni, M., Poulopoulos, V., Margaris, D. 2021. An Interface for User-centered Process and Correlation between Large Datasets. In Proc. 23rd International Conference on Human-Computer Interaction, LNCS 12779, pp. 477-494, Washington DC, USA, 24-29 July 2021.
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5. Margaris, D., Spiliotopoulos, D., Vasilopoulos, D., Vassilakis, C. 2021. A User Interface for Personalizing WS-BPEL Scenarios. In Proc. 23rd International Conference on Human-Computer Interaction, LNCS 12783, pp. 399-416, Washington DC, USA, 24-29 July 2021.
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6. Spiliotopoulos, D., Vassilakis, C., Margaris, D. 2020. On Recommending Safe Travel Periods to High Attack Risk Destinations. In Proc. IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining (ASONAM 2020), pp. 854-861, 7-10 December 2020.
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7. Margaris, D., Spiliotopoulos, D., Vassilakis, C. 2020. Neighbourhood Aging Factors for Limited Information Social Network Collaborative Filtering. In Proc. IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining (ASONAM 2020), pp. 877-883, 7-10 December 2020.
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8. Vassilakis, C., Maniataki, D., Lepouras, G., Antoniou, A., Spiliotopoulos, D., Poulopoulos, V., Wallace, M., Margaris, D. 2020. Database Knowledge Enrichment Utilizing Trending Topics from Twitter.. In Proc. IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining (ASONAM 2020), pp. 870-876, 7-10 December 2020.
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9. Spiliotopoulos, D., Poulopoulos, V., Margaris, D., Makri, E., Vassilakis, C. 2020. MOOC Accessibility from the Educator Perspective. In Proc. 22nd International Conference on Human-Computer Interaction, LNCS 12426, pp. 114-125, Copenhagen, Denmark, 19-24 July 2020.
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10. Margaris, D., Spiliotopoulos, D., Vassilakis, C., Karagiorgos, G. 2020. A User Interface for Personalized Web Service Selection in Business Processes, LNCS 12427, pp. 560-573, Copenhagen, Denmark, 19-24 July 2020.
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11. Spiliotopoulos, D., Kotis, K., Margaris, D., Vassilakis, C. 2020. Semantics-driven Conversational Interfaces for Museum Chatbots. In Proc. 22nd International Conference on Human-Computer Interaction, LNCS 12215, pp. 255-266, Copenhagen, Denmark, 19-24 July 2020.
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12. Koryzis, D., Fitsilis, F., Spiliotopoulos, D., Theocharopoulos, T., Vassilakis, C., Margaris, D. 2020. Policy Making Analysis and Practitioner User Experience. In Proc. 22nd International Conference on Human-Computer Interaction, LNCS 12423, pp. 415-431, Copenhagen, Denmark, 19-24 July 2020.
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13. Varitimiadis, S., Kotis, K., Spiliotopoulos, D., Vassiliakis, C., Margaris, D. 2020. 'Talking' triples to Museum Chatbots. In Proc. 22nd International Conference on Human-Computer Interaction, LNCS 12215, pp. 281-299, Copenhagen, Denmark, 19-24 July 2020.
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14. Stavropoulou, P., Spiliotopoulos, D., Kouroupetroglou, G. 2020. Voice User Interfaces for Service Robots: Design Principles and Methodology. In Proc. 22nd International Conference on Human-Computer Interaction, LNCS 12188, pp. 489-505, Copenhagen, Denmark, 19-24 July 2020.
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15. Spiliotopoulos, D., Margaris, D., Vassilakis, C. 2019. Citizen Engagement for Transparent and Accountable Policy Modelling. In Proc. 11th International ACM Conference on Management of Digital EcoSystems (MEDES'19), pp. 158-165, Limassol, Cyprus, 12-14 November 2019.
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16. Spiliotopoulos, D., Margaris, D., Vassilakis, C., Petukhova, V., Kotis, K. 2019. A Mixed-reality Interaction-driven Game-based Learning Framework. In Proc. 11th International ACM Conference on Management of Digital EcoSystems (MEDES'19), pp. 229-236, Limassol, Cyprus, 12-14 November 2019.
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17. Margaris, D., Spiliotopoulos, D., Vassilakis, C. 2019. Improving Collaborative Filtering's Rating Prediction Quality by Exploiting the Item Adoption Eagerness Information. In Proc. IEEE/WIC/ACM International Conference on Web Intelligence (WI 2019), pp. 1-6, Thessaloniki, Greece, 14–17 October 2019.
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18. Spiliotopoulos, D., Vassilakis, C., Margaris, D. 2019. Data-driven Country Safety Monitoring Terrorist Attack Prediction. In Proc. IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining (ASONAM 2019), pp. 1128-1135, Vancouver, Canada, 27-30 August 2019.
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19. Margaris, D., Spiliotopoulos, D., Vassilakis, C. 2019. Social Relations versus Near Neighbours: Reliable Recommenders in Limited Information Social Network Collaborative Filtering for Online Advertising. In Proc. IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining (ASONAM 2019), pp. 1160-1167, Vancouver, Canada, 27-30 August 2019.
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20. Margaris, D., Vasilopoulos, D., Vassilakis, C., Spiliotopoulos, D. 2019. Improving Collaborative Filtering's Rating Prediction Coverage in Sparse Datasets through the Introduction of Virtual Near Neighbors. In Proc. 10th IEEE International Conference on Information, Intelligence, Systems and Applications, pp. 1-8, Patra, Greece, 16-18 July 2019.
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21. Margaris, D., Vasilopoulos, D., Vassilakis, C., Spiliotopoulos, D. 2019. Improving Collaborative Filtering's Rating Prediction Accuracy by Introducing the Common Item Rating Past Criterion. In Proc. 10th IEEE International Conference on Information, Intelligence, Systems and Applications, pp. 1-8, Patra, Greece, 16-18 July 2019. Best paper award
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22. Spiliotopoulos, D., Vassilakis, C., Margaris, D., Kotis, K. 2019. A Methodology for Generated Text Annotation for High Quality Speech Synthesis. In Proc. IEEE International Conference on Information, Intelligence, Systems and Applications, pp. 1-8, Patra, Greece, 16-18 July 2019.
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23. Makri, E., Koryzis, D., Spiliotopoulos, D., Svolopoulos, V. 2019. Metalogue's Virtual Agent for Negotiation: Its Effect On Learniing Experience, Metacognitive and Individual-and-Community-level Attitudes Pre-and-Post Interaction. In Proc. 11th Annual International Conference on Education and New Learning Technologies, pp. 1-10, Palma de Mallorca, Spain, 1-3 July 2019.
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24. Varitimiadis, S., Tzortzakakis, A., Kotis, K., Tsekouras, G., Spiliotopoulos, D. 2019. Towards implementing an AI chatbot platform for museums. In Proc. 2nd International Conference on Cultural Informatics, Communication and Media Studies, pp. 1-8, Mitilini, Lesvos, 13-15 June 2019.
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25. Petukhova, V., Malchanau, A., Oualil, Y., Klakow, D., Luz, S., Haider, F., Campbell, N., Koryzis, D., Spiliotopoulos, D., Albert, P., Linz, N., Alexandersson, J. 2018. The Metalogue Debate Trainee Corpus: Data Collection and Annotations. In Proc. International Conference on Language Resources and Evaluation (LREC-2018), pp. 1-7, Miyazaki, Japan, 7-12 May 2018.
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26. Aivazoglou, M., Roussos, O., Ioannidis, S., Spiliotopoulos, D., Polakis, J. 2017. Reveal: Fine Grained Recommendations in a Social Ecosystem. In Proc. IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining (ASONAM 2017), pp. 1-4, Sydney, Australia, 31 July - 03 August 2017.
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27. Fitsilis F., Koryzis D., Svolopoulos V., Spiliotopoulos D. 2017. Implementing Digital Parliament Innovative Concepts for Citizens and Policy Makers. In Proc. 19th International Conference in Human-Computer Interaction, LNCS 10293, pp. 154–170, Springer, Vancouver, Canada, 9-14 July 2017.
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28. Koryzis, D., Samaras, CV., Makri, E., Svolopoulos, V., Spiliotopoulos, D. 2017. Visual Cue Streams for Multimodal Dialogue Interaction. In Proc. Advances in Human Factors, Business Management, Training and Education, pp. 541-547, Florida, USA.
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29. Antonakaki, D., Spiliotopoulos, D., Samaras, C., Ioannidis, S., Fragopoulou, P. 2016. Investigating the complete corpus of Referendum and Elections tweets. In Proc. 2016 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining (ASONAM 2016), pp. 1-6, San Francisco, CA, USA, 18-21 August 2016.
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30. Spiliotopoulos, D., Antonakaki, D., Ioannidis, S., Fragopoulou, P. 2016. Motivation Effect of Social Media Posts about Well-being and Healthy Living. In Proc. 9th ACM International Conference on Pervasive Technologies Related to Assistive Environments, pp. 1-4, Corfu, Greece, 29 June - 01 July 2016.
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31. Spiliotopoulos, D., Antonakaki, D., Ioannidis, S., Fragopoulou, P. 2016. Usability Evaluation of Accessible Complex Graphs. In Proc. 15th International Conference on Computers Helping People with Special Needs, pp. 571-574, Linz, Austria, 13-15 July 2016.
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32. Koryzis, D., Svolopoulos, V., Spiliotopoulos, D. 2016. Metalogue: A Multimodal Learning Journey. In Proc. 9th ACM International Conference on Pervasive Technologies Related to Assistive Environments, pp. 1-4, Corfu, Greece, 29 June - 01 July 2016.
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33. Samaras, C., Tsioliaridou, N. A., Liaskos, C. K., Spiliotopoulos, D., Ioannidis, S. 2015. Enhancing the Trustworthiness of Service On-Demand Systems via Smart Vote Filtering. In Proc. 8th International Conference on Trust & Trustworthy Computing (TRUST 2015), pp. 88-103, Heraklion, Greece, 24-26 August, 2015.
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34. Spiliotopoulos, D., Dalianis, A., Koryzis, D. 2015. Speech Enabled Ontology Graph Navigation and Editing. In Proc. 17th International Conference on Human-Computer Interaction (HCII 2015), LNCS 9175, pp. 487-494, Los Angeles, CA, USA, 2-7 August 2015.
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35. Spiliotopoulos, D., Dalianis, A. 2014. Technically Challenging Human Factors Issues for a Policy Argumentation Approach. In Proc. 5th International Conference on Applied Human Factors and Ergonomics, pp. 1-4, Krakow, Poland, 19-23 July 2014.
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36. Alexandersson, J., Girenko, A., Spiliotopoulos, D., Petukhova, V., Klakow, D., Koryzis, D., Taatgen, N., Specht, M., Campbell, N., Aretoulaki, M., Stricker, A., Gardner, M. 2014. Metalogue: A Multiperspective Multimodal Dialogue System with Metacognitive Abilities for Highly Adaptive and Flexible Dialogue Management. In Proc. 10th International Conference on Intelligent Environments (IE14), pp. 365-368, 2-4 July 2014, Shanghai, China.
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37. Spiliotopoulos, D., Dalianis, A., Koryzis, D. 2014. Need driven Prototype Design for a Policy Modeling Authoring Interface. In Proc. 16th International Conference on Human-Computer Interaction (HCII 2014), pp. 481-487, Springer-Verlag Berlin Heidelberg.
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38. Spiliotopoulos, D., Petukhova, V., Koryzis, D. 2014. Pilot Scenario Design for Evaluating a Metacognitive Skills Learning Dialogue System. In Proc. 16th International Conference on Human-Computer Interaction (HCII 2014), pp. 162-166, Springer-Verlag Berlin Heidelberg.
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39. Spiliotopoulos, D., Dalianis, A., Kouroupetroglou, G. 2014. Accessibility Driven Design for Policy Argumentation Modelling, In Proc. 16th International Conference on Human-Computer Interaction (HCII 2014), pp. 101-108, Springer-Verlag Berlin Heidelberg.
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40. Petasis, G., Spiliotopoulos, D., Tsirakis, N., Tsantilas, P. 2014. Sentiment Analysis for Reputation Management: Mining the Greek Web. In Proc. 8th Hellenic Conference in Artificial Intelligence, pp. 327-340, Springer-Verlag Berlin Heidelberg.
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41. Spiliotopoulos, D., Bouwmeester, R., Proios, D. 2013. Relation Visualization for Semantically Enriched Web Content. In Proc. 1st Communicating Complexity International Design Conference (2CO-2013), 25-26 October 2013, Alghero, Italy.
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42. Stavropoulou, P., Spiliotopoulos, D., Kouroupetroglou, G. 2013. Where Greek TtS Fails. In Proc. 11th International Conference on Greek Linguistics, 26-29 September 2013, Rhodes, Greece.
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43. Papatheodorou, N., Stavropoulou, P., Tsonos, D., Kouroupetroglou, G., Papageorgiou, C., Spiliotopoulos, D. 2013. On the Identification and Annotation of Emotional Properties of Verbs. In Proc. On the Move to Meaningful Internet Systems (OTM 2013), LNCS 8186: 588-597, Springer-Verlag Berlin Heidelberg.
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44. Spiliotopoulos, D., Tzoannos, E, Cabulea, C., Frey, D. 2013. Digital Archives: Semantic Search and Retrieval, In Proc. Human-Computer Interaction and Knowledge Discovery in Complex, Unstructured, Big Data. HCI-KDD-2013: 173-182, Springer-Verlag Berlin Heidelberg.
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45. Spiliotopoulos, D., Bouwmeester, R., Kouroupetroglou, G., Stavropoulou, P., Tsonos, D. 2013. Usability design and testing of an interface for search and retrieval of semantic web data. In Proc. 15th International Conference on Human-Computer Interaction (HCII 2013), pp. 575-580, Springer-Verlag Berlin Heidelberg.
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46. Spiliotopoulos, D., Stavropoulou, P., Kouroupetroglou, G., Tsonos, D. 2013. User Perception Knowledge for Socially-aware Web document Accessibility. In Proc. 15th International Conference on Human-Computer Interaction (HCII 2013), pp. 710-717, Springer-Verlag Berlin Heidelberg.
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47. Spiliotopoulos, D., Bouwmeester, R., Frey, D., Kouroupetroglou, G., Stavropoulou, P. 2013. The Iterative Design and Evaluation Approach for a Socially-aware Search and Retrieval Application for Digital Archiving. In Proc. 6th International Conference on Advances in Computer-Human Interaction, pp. 157-161, Nice, France, 24 February - 1 March, 2013.
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48. Spiliotopoulos, D., Schefbeck, G., Koryzis, D. 2013. Obtaining Societal Feedback on Legislative Issues through Content Extraction from the Social Web. In Proc. 16th International Symposium on Legal Informatics, pp. 1-4, 21-23 February 2013, Salzburg, Austria.
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49. Schefbeck, G., Spiliotopoulos, D., Risse, T. 2012. The Recent Challenge in Web Archiving: Archiving the Social Web. International Council on Archives Congress, pp. 1-5, Brisbane, Australia, 20-24 August 2012.
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50. Spiliotopoulos, D., Tzoannos, E., Stavropoulou, P., Kouroupetroglou, D., Pino, A. 2012. Designing user interfaces for social media driven digital preservation and information retrieval. In Proc. 13th International Conference on Computers Helping People with Special Needs, LNCS 7382, pp. 581-584.
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51. Stavropoulou, P., Spiliotopoulos, D., Kouroupetroglou, D. 2012. Resource Evaluation for Usable Speech Interfaces: Utilizing Human–Human Dialogues. In Proc. 8th International Conference on Language Resources and Evaluation, Istanbul, Turkey, 23-25 May, 2012.
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52. Stavropoulou, P., Spiliotopoulos, D., Kouroupetroglou, D. 2011. Acoustic modeling of dialogue elements for document accessibility. In Proc. 13th International Conference on Human-Computer Interaction (HCII 2011), LNCS 6768, pp. 175-184.
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53. Pino, Α., Kouroupetroglou, G., Kacorri, H., Sarantidou, A., Spiliotopoulos, D. 2010. An Open Source / Freeware Assistive Technology Software Inventory. In Proc. 12th International Conference on Computers Helping People with Special Needs (ICCHP 2010), LNCS 6179, pp. 178–185 Springer-Verlag Berlin Heidelberg.
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54. Stavropoulou, P., Spiliotopoulos, D., Kouroupetroglou, G. 2010. Integrating Contrast in a Framework for Predicting Prosody. In Proc. 11th International Conference on Computational Linguistics and Intelligent Text Processing (CICLing 2010), LNCS 6008, pp. 748-758, Springer Berlin Heidelberg.
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55. Spiliotopoulos, D., Stavropoulou, P., Kouroupetroglou, G. 2009. Spoken Dialogue Interfaces: Integrating Usability. In Proc. 5th Symposium of the Austrian HCI and Usability Engineering Group, LNCS 5889, pp. 484-499, Springer Berlin Heidelberg.
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56. Spiliotopoulos, D., Stavropoulou, P., Kouroupetroglou, G. 2009. Acoustic Rendering of Data Tables using Earcons and Prosody for Document Accessibility. In Proc. 13th International Conference on Human-Computer Interaction (HCII 2009), LNAI 5616, pp. 587-596, Springer Berlin Heidelberg.
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57. Stavropoulou, P., Spiliotopoulos, D. 2009. Prosodic Realisation of Topics. In Proc. 19th International Symposium on Theoretical and Applied Linguistics, Thessaloniki, 3-5 April 2009, Greece.
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58. Spiliotopoulos, D., Petasis, G., Kouroupetroglou, G. 2008. A Framework for Language-Independent Analysis and Prosodic Feature Annotation of Text Corpora. In Proc. 11th International Conference on Text, Speech and Dialogue (TSD 2008), LNAI 5246, pp. 517-524, Springer-Verlag Berlin Heidelberg.
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59. Spiliotopoulos, D., Petasis, G., Kouroupetroglou, G. 2005. Prosodically Enriched Text Annotation for High Quality Speech Synthesis. In Proc. 10th International Conference on Speech and Computer (SPECOM-2005), 17-19 October 2005, Patras, Greece, pp. 313-316.
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60. Spiliotopoulos, D., Xydas, G., Kouroupetroglou, G. 2005. Diction Based Prosody Modeling in Table-to-Speech Synthesis. Proc. 8th International Conference on Text, Speech and Dialogue (TSD 2005), LNAI 3658, pp. 294-301, Springer-Verlag Berlin Heidelberg.
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61. Spiliotopoulos, D., Xydas, G., Kouroupetroglou, G., Argyropoulos, V. 2005. Experimentation on Spoken Format of Tables in Auditory User Interfaces. In Proc. 11th International Conference on Human-Computer Interaction (HCII-2005), pp. 1-10, Las Vegas, USA, 22-27 July, 2005.
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62. Xydas, G., Spiliotopoulos, D., Kouroupetroglou, G. 2004. Modeling Prosodic Structures in Linguistically Enriched Environments. In Proc. International Conference on Text, Speech and Dialogue (TSD 2004), LNAI 3206, pp. 521-528, Springer-Verlag Berlin Heidelberg.
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63. Xydas, G., Spiliotopoulos, D., Kouroupetroglou, G. 2003. Building Prosodic Structures in a Concept-to-Speech System. In Proc. 1st Balkan Conference on Informatics (BCI-2003), pp. 105-111, 21-23 November 2003, Thessaloniki, Greece.
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64. Xydas, G., Spiliotopoulos, D., Kouroupetroglou, G. 2003. Prosody Prediction from Linguistically Enriched Documents Based on a Machine Learning Algorithm. In Proc. 6th International Conference of Greek Linguistics (ICGL-2003), Rethymno, Crete, Greece, 18-21 September 2003.
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65. Xydas, G., Spiliotopoulos, D., Kouroupetroglou, G. 2003. Modelling Emphatic Events from Non-Speech Aware Documents in Speech Based User Interfaces. In Proc. 10th International Conference on Human-Computer Interaction (HCII-2003), pp. 806-810, 22-27 June, 2003, Crete, Greece.
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66. Androutsopoulos, I., Spiliotopoulos, D., Stamatakis, K., Dimitromanolaki, A., Karkaletsis, V., Spyropoulos, C.D. 2002. Symbolic Authoring for Multilingual Natural Language Generation. In Proc. Hellenic Conference on Artificial Intelligence, LNAI 2308, pp. 131-142, Springer-Verlag Berlin Heidelberg.
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67. Spiliotopoulos, D., Androutsopoulos, I., Spyropoulos, C.D. 2001. Human-Robot Interaction Based on Spoken Natural Language Dialogue. In Proc. European Workshop on Service and Humanoid Robots (ServiceRob-2001), Santorini, Greece, 25-27 June 2001.
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Book Chapters

1. Koryzis, D., Spiliotopoulos, D. 2022. Digital Strategy for Evidence-Based Policymaking in Parliament. In F. Fitsilis, and G. Mikros (eds), Smart Parliaments Data-Driven Democracy, pp. 81-86, European Liberal Forum. http://https://liberalforum.eu/publication/smart-parliaments-data-driven-democracy/
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2. Kriemadis, A., Spiliotopoulos, D., Vassilakis, C., Kapnisi, D. 2021. Social Skills and Online Learning. In S. Loureiro, and J. Guerreiro (eds), Handbook of Research on Developing a Post-Pandemic Paradigm for Virtual Technologies in Higher Education, pp. 261-281, IGI Global. http://doi:10.4018/978-1-7998-6963-4.ch013
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3. Spiliotopoulos, D., Margaris, D., Vassilakis, C. 2021. Safe Travelling Period Recommendation to High Attack Risk European Destinations Based on Past Attack Information. In M. Çakırtaş and M.K. Ozdemir (eds), Big Data and Social Media Analytics, pp. 77-100, Lecture Notes in Social Networks. Springer, Cham. https://doi.org/10.1007/978-3-030-67044-3_4
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4. Margaris, D., Spiliotopoulos, D., Vassilakis, C. 2021. Identifying Reliable Recommenders in Users’ Collaborating Filtering and Social Neighbourhoods. In M. Çakırtaş and M.K. Ozdemir (eds), Big Data and Social Media Analytics, pp. 51-76, Lecture Notes in Social Networks. Springer, Cham. https://doi.org/10.1007/978-3-030-67044-3_3
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5. Spiliotopoulos, D., Kouroupetroglou, G., Stavropoulou, P. 2011. VoiceWeb: Spoken Dialogue Interfaces and Usability. In G. Alkhatib (ed), Web Engineered Applications for Evolving Organizations: Emerging Knowledge, pp. 340-359, Information Science Reference Press, Pennsylvania, USA.
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6. Stavropoulou, P., Spiliotopoulos, D., Kouroupetroglou, G. 2010. Design and Development of an Automated Voice Agent: Theory and Practice Brought Together. In D. Perez-Marin and I. Pascual-Nieto (eds), Conversational Agents and Natural Language Interaction: Techniques and Effective Practices, pp. 335-359, Information Science Reference Press, Pennsylvania, USA.
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7. Spiliotopoulos, D., Kouroupetroglou, G. 2010. Usability Methodologies for Spoken Dialogue Web Interfaces. In T. Spiliotopoulos, P. Papadopoulou and D. Martakos (eds), Integrating Usability Engineering for Designing the Web Experience: Methodologies and Principles, Chapter 8, pp. 149-165, Information Science Reference Press, Pennsylvania, USA.
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Abstracts and Technical Reports

1. Spiliotopoulos, D., Cabulea, C., Frey, D. 2013. User Interaction Issues on Searching Digitally Archived Content. In Proc. Int. Workshop on Archiving Community Memories, 6 September 2013, Lisbon, Portugal.
2. Spiliotopoulos, D., Koryzis, D., Schefbeck, G. 2014. Crowdsourcing and Transparency in the Legislative Process: The NOMAD Approach. In Proc. 17th Int. Symp. Legal Informatics, 20-22 February 2013, Salzburg, Austria.
3. Del Pozo, A., Bywood, L., Georgakopoulou, Y., van Loenhout, G., Petukhova, V., Sepesy Maucec, M., Spiliotopoulos, D., Trespalacios, V., Volk, M., Way, A. 2012. SUMAT: An online service for SUbtitling by MAchine Translation. In Proc. 16th Annual Conference of the European Association for Machine Translation, Trento, Italy, 28-30 May, 2012.
4. Spiliotopoulos, D., Androutsopoulos, I. 2000. A Survey of Spoken Dialogue Management Techniques. Technical Report DEMO 2000/15, NCSR “Demokritos”.