Dear All,

Due to the Covid-19 situation, EJC2021 conference dates have been changed.

31st International Conference on Information Modelling and Knowledge Bases EJC 2021
September 6-10, 2021.
Hamburg University of Applied Sciences, Germany  [hybrid event]

Additional new-submission deadline: April 30th
Acceptance-notification: May 20th


EJC is organized as an academic society on Information Modelling and
Knowledge Bases. The final paper version is published as a journal
publication in the organization and the program committee.

The series of European Japanese Conference on Information Modelling and
Knowledge Bases (EJC) originally started as a co-operation initiative
between Japan and Finland in 1982. The practical operations were then
organized by professor Setsuo Ohsuga in Japan and professors Hannu
Kangassalo and Hannu Jaakkola in Finland (Nordic countries).
Geographical scope has expanded to cover Europe and also other countries.
Workshop characteristic - discussion, time enough for presentations and
limited number of participants (50) / papers (30) - is typical to the
conference. Suggested topics include, but are not limited to:

1. Conceptual modelling: Modelling and specification languages;
Domain-specific conceptual modelling; Concepts, concept theories and
ontologies; Conceptual modelling of large and heterogeneous systems;
Conceptual modelling of spatial, temporal and biological data; Methods
for developing, validating and communicating conceptual models.

2. Knowledge and information modelling and discovery: Knowledge
discovery, knowledge representation and knowledge management; Advanced
data mining and analysis methods; Conceptions of knowledge and
information;Modelling information requirements; Intelligent information
systems; Information recognition and information modelling.

3. Linguistic modelling: Models of HCI; Information delivery to users;
Intelligent informal querying; Linguistic foundation of information and
knowledge; Fuzzy linguistic models; Philosophical and linguistic
foundations of conceptual models.

4. Cross-cultural communication and social computing: Cross-cultural
support systems; Integration, evolution and migration of systems;
Collaborative societies; Multicultural web-based software systems;
Intercultural collaboration and support systems; Social computing,
behavioral modeling and prediction.

5. Environmental modelling and engineering: Environmental information
systems (architecture); Spatial, temporal and observational information
systems; Large-scale environmental systems; Collaborative knowledge base
systems;Agent concepts and conceptualisation; Hazard prediction,
prevention and steering systems.

6. Multimedia data modelling and systems: Modelling multimedia
information and knowledge; Content-based multimedia data management;
Content-based multimedia retrieval; Privacy and context enhancing
technologies;Semantics and pragmatics of multimedia data; Metadata for
multimedia information systems.


EJC (European Japanese Conference on Information Modelling and Knowledge
Bases) is defined as the selection process of the final journal-paper
publication in "Information Modelling and Knowledge Bases" by the EJC
Organization and Program Committee of "International Conference on
Information Modelling and Knowledge Bases" .

The papers selected as journal papers are published in the Series of
"Frontiers in Artificial Intelligence" by IOS Press (Amsterdam) after
the conference for international distributions. The books "Information
Modelling and Knowledge Bases Vol. n" are edited by the Editing
Committee of the conference. Improved papers must be sent by next
September, after the conference. Each of the position papers is reviewed
in the presentation and the improved version by Program Committee,
whether or not it can be accepted as the final journal print.  

Important dates:

Additional new-submission deadline: April 30th
Acceptance-notification: May 20th:
Final paper for inclusion in the conference proceedings by May 31st, 2021
Final paper for IOS Journal print: September 15th, 2021


General Chair: Hannu Kangassalo, University of Tampere, Finland

Program Committee Co-Chairs:
Yasushi Kiyoki (Keio University, SFC, Japan); kiyoki(at)
Bernhard Thalheim (Christian-Albrechts University Kiel, Germany); bernhard.thalheim(at)

Program Committee Members:

General Organising Chair: Hannu Jaakkola, Tampere University, Finland; email hannu.jaakkola(at)

Local Organizing Committee:
Marina Tropmann-Frick, Hamburg University of Applied Sciences
Other members will be nominated

Program Coordination Team:
Naofumi Yoshida, Komazawa University, Japan; email naofumi(at)
Tatiana Endrjukaite, Transport and Telecommunication Institute, Latvia
Tatjana Welzer, Unicversity of Maribor, Slovenia; email tatjana.welze(at)