30th Anniversary in Linz

Great success for DEXA conference

The Johannes Kepler University Linz hosted the worldwide recognized DEXA conference (Conference on Database and Expert Systems Applications). The conference focused on the current developments in digitization and artificial intelligence. Organizers were the the Department of Telecooperation  from Johannes Kepler University Linz, the Software Competence Center Hagenberg and the International Organization on Information Integration and Web-based Applications Services. Founded 30 years ago by  the Professors Dr. A Min Tjoa and Dr. Roland Wagner, the DEXA is more successful than ever.

Prof. Dr. A Min Tjoa is one of the founders of the DEXA conference.

State of the art research

DEXA is an international conference series that showcases state-of-the-art research activities in database, information, and knowledge systems. The conference and its associated workshops provide a premier annual forum to present original research results and to examine advanced applications in the field. The goal is to bring together developers, scientists, and users to extensively discuss requirements, challenges, and solutions in database, information, and knowledge systems.

International speaker

In addition to the normal papers presentations, DEXA 2019 program also featured four distinguished keynote speeches. The first keynote was delivered by Prof.Dr. Vladimír Mařík from Czech Technical University, Czech Republic, who talked about AI in Manufacturing in which he presented industrial use cases where agent-based approaches influence both the system and the SW architectures (typically SOA) and lead to such novel concepts like production as a service, smart services of products and smart services provided to products during the whole life-cycle;

The second talk was delivered by Prof.Dr. Dirk Draheim from Tallinn University of Technology, Estonia,  who talked about Future Perspectives of Association Rule Mining Based on Partial Conditionalization in which he discussed how partial conditionalization can be exploited to generalize association rule mining from conditional probabilities to conditional expected values, including the necessary theoretical measures of interest that are adequate to support multi-factor impact analysis and are explicitly robust against data misinterpretation.

The third talk was delivered by Prof. Dr. Axel Polleres from WU Vienna, Austria. who talked about How do Linked Data, Open Data, and Knowledge Graphs interplay? in which he tackled the question of what's actually new about Knowledge Graphs and how they can help us to get closer to a more natural understanding of data, particularly Open Data on the Web, from his personal perspective  of +15 years of research on Semantic Web standards, Linked Data, and Open Data.

The last talk was delivered by Prof. Dr. Stefanie Rinderle-Ma, University of Vienna, Austria, who talked about Process Technology as Key Driver for Smart Manufacturing in which she reported on the journey of process technology in smart manufacturing: from connecting and controlling machines in the EU project ADVENTURE, over developing a modular LEGO factory demonstrating Industry 4.0 concepts to centurio.work.

Scientific programme

This year edition of DEXA featured five international conferences and four workshops covering a variety of topics:

  • DaWaK 2019 - 21st International Conference on Big Data Analytics and Knowledge Discovery
  • DEXA 2019 - 30th International Conference on Database and Expert Systems Applications  EGOVIS 2019 - 8th International Conference on Electronic Government and the Information Systems Perspective
  • HoloMAS2019 - The 9th International Conference on Industrial Applications of Holonic and Multi-Agent Systems
  • TrustBus 2019 - 16th International Conference on Trust, Privacy, and Security in Digital Business
  • BIOKDD 2019- The 10th International Workshop on Biological Knowledge Discovery from Data
  • IWCFS 2019 - The 3rd International Workshop on Cyber-Security and Functional Safety in Cyber-Physical Systems
  • MLKgraphs2019 - The 1st International Workshop on Machine Learning and Knowledge Graphs
  • TIR 2019 - The 16th International Workshop on Technologies for Information Retrieval


The conferences and workshops attracted 316 papers from 51 countries out of which only 163 papers were accepted and presented in 43 sessions. The conference proceedings were published by Springer in their Lecture Notes in Computer Science (LNCS) (6 volumes) and Communications in Computer and Information Science (CCIS) (1 volume).

The next edition of DEXA was decided to take place in Bratislava, Slovakia from 14-17 September 2020.

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