Publications

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Conference Paper
Spiliotopoulos D, Kotis K, Vassilakis C, Margaris D.  2020.  Semantics-Driven Conversational Interfaces for Museum Chatbots. Proceedings of the 22nd International Conference on Human-Computer Interaction, volume "Culture and Computing".
Margaris D, Spiliotopoulos D, Vassilakis C.  2019.  Social Relations versus Near Neighbours: Reliable Recommenders in Limited Information Social Network Collaborative Filtering for Online Advertising. Proceedings of the 2019 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining (ASONAM 2019).
Varitimiadis S, Kotis K, Spiliotopoulos D, Vassilakis C, Margaris D.  2020.  “Talking” Triples to Museum Chatbots. Proceedings of the 22nd International Conference on Human-Computer Interaction, volume "Culture and Computing".
Margaris D, Spiliotopoulos D, Vassilakis C, Karagiorgos G.  2020.  A User Interface for Personalized Web Service Selection in Business Processes. Lecture Notes in Computer Science.
Sgardelis K, Margaris D, Spiliotopoulos D, Vassilakis C.  2023.  A User Interface for Tuning QoS parameters in Recommendation-Based Business Process Scenario Adaptation. Proceedings of the 19th International Conference on Web Information Systems and Technologies (WEBIST 2023).
Journal Article
Margaris D, Kobusinska A, Spiliotopoulos D, Vassilakis C.  2020.  An Adaptive Social Network-Aware Collaborative Filtering Algorithm for Improved Rating Prediction Accuracy. IEEE Access. 8:68301–68310.
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. 13:174.
Margaris D, Spiliotopoulos D, Vassilakis C.  2021.  Augmenting Black Sheep Neighbour Importance for Enhancing Rating Prediction Accuracy in Collaborative Filtering. Applied Sciences. 11:8369.
Bouras V, Spiliotopoulos D, Margaris D, Vassilakis C, Kotis K, Antoniou A, Lepouras G, Wallace M, Poulopoulos V.  2023.  Chatbots for Cultural Venues: A Topic-Based Approach. Algorithms. 16:339.
Spiliotopoulos D, Margaris D, Vassilakis C.  2020.  Data-Assisted Persona Construction Using Social Media Data. Big Data and Cognitive Computing. 4:21.
Koryzis D, Margaris D, Vassilakis C, Kotis K, Spiliotopoulos D.  2023.  Disruptive Technologies for Parliaments: A Literature Review. Future Internet. 15:66.
Margaris D, Vassilakis C.  2018.  Enhancing Rating Prediction Quality Through Improving the Accuracy of Detection of Shifts in Rating Practices. Lecture Notes in Computer Science. 10940 (LNCS):151–191.
Margaris D, Vassilakis C.  2017.  Enhancing User Rating Database Consistency Through Pruning. Transactions on Large-Scale Data- and Knowledge-Centered Systems XXXIV. LNCS, volume 10620:33–64.
Margaris D, Vassilakis C.  2017.  Exploiting Internet of Things information to enhance venues' recommendation accuracy. Service Oriented Computing and Applications. todb:393–409.
Margaris D, Vassilakis C.  2018.  Exploiting Rating Abstention Intervals for Addressing Concept Drift in Social Network Recommender Systems. Informatics. 5:21pages.
Aivazoglou M, Roussos A, Margaris D, Vassilakis C, Ioannidis S, Polakis J, Spiliotopoulos D.  2020.  A Fine-grained Social Network Recommender System. Social Network Analysis and Mining. 10(8)
Margaris D, Vassilakis C.  2020.  Improving collaborative filtering’s rating prediction accuracy by considering users’ dynamic rating variability. International Journal of Big Data Intelligence. 7(2)
Margaris D, Vassilakis C.  2020.  Improving collaborative filtering’s rating prediction coverage in sparse datasets by exploiting the “friend of a friend” concept. International Journal of Big Data Intelligence. 7(1)
Margaris D, Vassilakis C, Georgiadis P..  2015.  An integrated framework for adapting WS-BPEL scenario execution using QoS and collaborative filtering techniques. Science of Computer Programming. 98:707–734.
Spiliotopoulos D, Makri E, Vassilakis C, Margaris D.  2020.  Multimodal Interaction: Correlates of Learners' Metacognitive Skill Training Negotiation Experience. Information. 11:381.
Margaris D, Vassilakis C, Spiliotopoulos D.  2022.  On Producing Accurate Rating Predictions in Sparse Collaborative Filtering Datasets. Information. 13:302.
Margaris D, Vassilakis C, Georgiadis P..  2017.  Query personalization using social network information and collaborative filtering techniques. Future Generation of Computer Systems. Special Issue on Recommender Systems for Large-Scale Social Networks:440–450.
Margaris D, Vassilakis C, Spiliotopoulos D, Ougiaroglou S.  2023.  Rating Prediction Quality Enhancement in Low-Density Collaborative Filtering Datasets. Big Data and Cognitive Computing. 7:59.
Margaris D, Vassilakis C, Georgiadis P..  2016.  Recommendation information diffusion in social networks considering user influence and semantics. Social Network Analysis and Mining. 6:108.
Vassilakis C, Kotis K, Spiliotopoulos D, Margaris D, Kasapakis V, Anagnostopoulos C-N, Santipantakis G, Vouros GA, Kotsilieris T, Petukhova V et al..  2020.  A Semantic Mixed Reality Framework for Shared Cultural Experiences Ecosystems. Big Data and Cognitive Computing. 4:6.