SWoT group

A Web space for the Semantic Web of Things (SWoT) group's research work conducted at Intelligent Systems lab (i-Lab), Dept. of Cultural Technology and Comm., University of the Aegean.

We align to the opinion of Google DeepMind's CEO, Demis Hassabis, that our current and future undergraduate students should spend time 'learning to learn'. After their graduation, what is important for them in the era of Emerging and Disruptive Technologies (EDTs), including the Semantic Web, AI, IoT, XR and Quantum Computing, is to identify their passions and learn (at least) the core fundamentals of their discipline/degree. How do we learn best? How can we adapt to changes? In this new era (of EDTs) we are entering, the only predictable thing can be that of "the magnitude of the disruption and change".

So, learn how to learn, learn how to adapt, learn how to live along with EDTs.
Source: https://www.businessinsider.com/google-deepmind-ceo-advice-college-students-ai-change-2025-5.

About Us

Semantic Web of Things group, founded in 2020, conducts research on the main research area of Knowledge Representation and Reasoning (KRR), and on the following specific topics:

Ontology Eng. (OE), Semantic Web (SW), Intelligent Web, IoT/WoT, Semantic Web of Things (SWoT), Semantic Data Management, Semantic Trajectories (ST), Conversational AI (Chatbots) and KGs , Linked Data (LD), genAI & OE, Agentic AI & OE, LLMs & SW/OE.

...and the following application domains: Culture, Health (PD, ASD), e-Justice, Military/Search & Rescue (SAR).

A list of peer-reviewed papers authored by our group can be found at Google Scholar profile.
A list of ontologies developed (co-developed) can be found here and at GitHub!
A list of source code (ontologies and apps) can be found at GitHub!
A video of selected apps demo at YouTube can be found here!

Group Members

First Name Last Name Role
Konstantinos Kotis Group leader, assoc. professor
Stamatis Spirou PostDoc researcher, Fair AI predictions of gender-sensitive recidivism (FAIR-PReSONS project)
George Bouchouras PostDoc researcher, LLMs and KGs in healthcare/biomechanics (PDs and ASDs)
Sotiris Angelis Team member, PhD candidate (Semantic Trajectories)
Savvas
Varitimiadis
Team member, PhD candidate (KG-based Conversational AI)
Pavlos Bitilis Team member, PhD candidate (Personal Health Knowledge Graphs (PHKG), Wearables, and PD)
Adam Koletis Team member, PhD candidate (Semantic Data Integration of PHKG and Artistic Behavior)
Andreas Soularidis Team member, PhD candidate (Real-time semantic data integration and automated reasoning on IoT-enabled edge devices)
Georgios Anagnostou Team member, PhD candidate (LLMs in Knowledge Graphs Construction and Semantic Search)
Dimitris Doumanas Team member, PhD candidate (Utilizing Language Models (LMs) in Decision-Making Support Systems)
Alexandros Karakikes Team member, PhD candidate (Bias-free ΑΙ -Assisted Implementation of the Intelligence Analysis Cycle)





MSc students attending our Master by Research program in Intelligent Computer Systems
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Co-supervised PhDs (member of advisory committee)

Internet of Things and interoperability through semantic knowledge representation in the form of ontologies for smart city applications. (related co-authored paper)

Pliatsos A.

Supervisor: prof. Goumopoulos Christos

Completed in 2024

Knowledge representation/ontologies on the domain of artworks conservation.
(related co-authored paper)

Moraitou E.

Supervisor: prof. Caridakis George

Completed in 2024

Optimization techniques and architectures for enhanced performance in intelligent systems.
(related co-authored paper)

Dimara A.

Supervisor: prof. Anagnostopoulos Christos-N.

Completed in  2025


Selected Publications

From Human- to LLM-centered Collaborative Ontology Engineering

Doumanas, D., G. Bouhouras, Soularidis, A., Kotis, K., Vouros, G.

Applied Ontology. 2025;19(4):334-367. doi:10.1177/15705838241305067.

https://doi.org/10.1177/15705838241305067
Integrating LLMs in the Engineering of a SAR Ontology

Doumanas, D., Soularidis, A., Kotis, K., Vouros, G.

Artificial Intelligence Applications and Innovations. AIAI 2024. IFIP Advances in Information and Communication Technology, vol 714. Springer, Cham.

https://doi.org/10.1007/978-3-031-63223-5_27
LLMs for the Engineering of a Parkinson Disease Monitoring and Alerting Ontology

G. Bouchouras, P. Bitilis, K. Kotis, and G. Vouros,

First International Workshop on Generative Neuro-Symbolic AI, co-located with ESWC 2024, Hersonissos, Crete, May 2024.

CHEKG: a collaborative and hybrid methodology for engineering modular and fair domain-specific knowledge graphs.

Angelis, S., Moraitou, E., Caridakis, G., Kotis, K.

Knowledge and Information Systems, 4899–4925 (2024)

https://doi.org/10.1007/s10115-024-02110-w
A Systematic Review on Semantic Interoperability in the IoE-enabled Smart Cities. Internet of Things

2. Pliatsios, A.; Kotis, K.; Goumopoulos C.

Internet of Things, 22, 2023

https://doi.org/10.1016/j.iot.2023.10075
A KG-Based Integrated UAV Approach for Engineering Semantic Trajectories in the Cultural Heritage Documentation Domain

Kotis, K.; Angelis, S.; Moraitou, E.; Kopsachilis, V.; Papadopoulou, E.-E.; Soulakellis, N.; Vaitis, M.

Remote Sens. 2023, 15, 821.

https://doi.org/10.3390/rs15030821
Self-Healing of Semantically Interoperable Smart and Prescriptive Edge Devices in IoT

Dimara, A.; Vasilopoulos, V.-G.; Papaioannou, A.; Angelis, S.; Kotis, K.; Anagnostopoulos, C.-N.; Krinidis, S.; Ioannidis, D.; Tzovaras, D.

Appl. Sci. 2022, 12, 11650.

https://doi.org/10.3390/app122211650
ReconTraj4Drones: A Framework for the Reconstruction and Semantic Modeling of UAVs’ Trajectories on MovingPandas

K. Kotis, A. Soularidis

Appl. Sci. 2023, 13, 670.

https://doi.org/10.3390/app13010670
RDF-Gen: Generating RDF Triples from Big Data Sources

Santipantakis, G., Kotis, K., Glenis, A., Vouros, G. A., Doulkeridis, C., Vlachou, A.

Knowledge and Information Systems (KAIS) journal, vol. 64, issue 11, 2985–3015, 2022, Springer

https://doi.org/10.1007/s10115-022-01729-x
Semantic Trajectory Analytics and Recommender Systems in Cultural Spaces

Angelis, S.; Kotis, K.; Spiliotopoulos, D.

Big Data Cogn. Comput. 2021, 5, 80.

https://doi.org/10.3390/bdcc5040080
Graph-Based Conversational AI: Towards a Distributed and Collaborative Multi-Chatbot Approach for Museums

Varitimiadis, S.; Kotis, K.; Pittou, D.; Konstantakis, G.

Appl. Sci. 2021, 11(19), 9160

https://doi.org/10.3390/app11199160
Ontology engineering methodologies for the evolution of living and reused ontologies: Status, trends, findings and recommendations

Kotis, K., Vouros, G., & Spiliotopoulos, D.

The Knowledge Engineering Review, 2020, 35, E4

https://doi.org/10.1017/S0269888920000065
Semantic Interoperability on the Internet of Things: The Semantic Smart Gateway Framework

Kotis K. and Katasonov A.

International Journal of Distributed Systems and Technologies (IJDST). 2013, 4(3), pp.23

https://doi.org/10.4018/jdst.2013070104
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Selected Projects

FAIR-PReSONS: Fair AI predictions of gender-sensitive recidivism

EU project funded (COO, Project coordinator)

GreenHeritage: The impact of Climate Change on the Intangible Cultural Heritage

Erasmus-LS project (BEN, WP leader)

Time Machine: Big Data of the Past for the Future of Europe

H2020 Coordination and support action (CSA) – FETFLAG-2018-01

Managing Semantic Trajectories as Knowledge Graphs

1.2 [e-Aegean-Geo-spatial data services] Integrated Geospatial Data Services, Communities of Knowledge, Innovation & Entrepreneurship in North Aegean [e- Aegean Communities]

Promote: Persuasive Technologies in Tourism

National Program (North Aegean Regional Development Program 2014-2020, MIS 5093219)

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Apps

Try one of the following to access a SW/LD app for:

Semantic Trajectories as Knowledge Graphs - Visualization and Retrieval
Αpp

Towards Engineering Drones’ Semantic Trajectories as Knowledge Graphs

E Moraitou, S Angelis, K Kotis, G Caridakis, EE Papadopoulou,

5th International Workshop on Geospatial Linked Data (GeoLD 2022), co-located with the 19th European Semantic Web Conference (ESWC 2022), Hersonissos, Greece - 29 May 2022

ReconTraj4Drones
Αpp

A Trajectory Analytics and Visualization tool for drones' trajectory reconstruction, enrichment and semantic annotation based on MovingPandas

ReconTraj4Drones: A Framework for the Reconstruction and Semantic Modeling of UAVs’ Trajectories on MovingPandas

K. Kotis, A. Soularidis

Appl. Sci. 2023, 13, 670.

Linking, enriching, and searching heterogeneous museum datasets
Αpp

Interlinking and enrichment of disparate organisational data with LOD at applications run-time

A Sotirios, K Konstantinos, M Panagiotis

International Journal of Metadata, Semantics and Ontologies

Greek Children’s Art Museum LD / SPARQL Query Editor
Αpp

Children's art museum collections as Linked Open Data

K Kotis, S Angelis, C Maria, M Efstathia

International Journal of Metadata, Semantics and Ontologies 15 (1), 60-70

MuBot: Intelligent Museum Guide
App

Funded: Operational Programme of Crete Reginal Administration, Research and Development from SMEs in RIS3Crete sectors

Principal Investigator: Assist. prof. Kotis Konstantinos

Role:Research Subcontractor (Aegean Solutions S.A)

MemoBot – Talking with Kazantzakis: Intelligent Mixed Reality Experiences
App

Funded: Operational Programme Competitiveness, Entrepreneurship and Innovation 2014-2020 (EPAnEK)

Principal Investigator: Assist. prof. Kotis Konstantinos

Role: Research Subcontractor (Aegean Solutions S.A)

ΙMOC: Intelligent Open Creative platform for museums
App

Funded: Operational Programme Competitiveness, Entrepreneurship and Innovation 2014-2020 (EPAnEK)

Principal Investigator: Assist. prof. Kotis Konstantinos

Role: Research Subcontractor (Aegean Solutions S.A)

LD Datasets