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Jørgen Fischer Nilsson’s research activities fall within the field of knowledge based systems and computational logic. His main interests are currently formal ontologies, where he is occupied with theoretical foundations as well as in application of ontologies in software systems. Currently he deals with ontology-based computational processing of natural language for the purpose of establishing content-based search facilities. He professor at the section of Computer science and Engineering at the Department of Informatics. He received his MSc and PhD degrees from the Technical University of Denmark (DTU) in 1974 and 1977, respectively. He worked as post doctoral fellow at IBM Research Labs, Dept. of Computer Science, Cal., USA, 1976-77. Since 1987 he has been full professor in computer science at DTU. He has been visiting research professor at Uppsala University. He has published papers at international conferences and journals within the topics of relational data base systems, formal language theory, logic programming languages and logic programming methodology, logical knowledge representation, concept theory, argumentation theory, formal ontologies, semantics of natural language , and inductive program synthesis. He has supervised numerous M.Sc.-candidates and Ph.D.-candidates.

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  • Computer science
  • IT-systems
  • Knowledge based systems

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  • On Reducing Reasoning and Querying in Natural Logic to Database Querying

    Andreasen, T. (ed.), Bulskov, H. & Nilsson, J. F., 2023, Proceedings of the 15th International Conference on Flexible Query Answering System. Springer, Vol. 14113. p. 3-14

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

  • Realization of a Natural Logic in a Database System

    Andreasen, T., Bulskov, H. & Nilsson, J. F., 2021, Flexible Query Answering Systems. Andreasen, T., De Tré, G., Kacprzyk, J., Legind Larsen, H., Bordogna, G. & Zadrożny, S. (eds.). Springer, p. 54-66 (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), Vol. 12871 LNAI).

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

  • A Cube of Opposition for Predicate Logic

    Nilsson, J. F., 1 Mar 2020, In: Logica Universalis. 14, 1, p. 103-114

    Research output: Contribution to journalJournal articleResearchpeer-review

  • A natural logic system for large knowledge bases

    Andreasen, T., Bulskov, H. & Fischer Nilsson, J., 16 Dec 2020, Information Modelling and Knowledge Bases XXXII. Tropmann-Frick, M., Thalheim, B., Jaakkola, H., Kiyoki, Y. & Yoshida, N. (eds.). IOS Press BV, p. 119-133 (Frontiers in Artificial Intelligence and Applications, Vol. 333).

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

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  • Natural logic knowledge bases and their graph form

    Andreasen, T., Bulskov, H., Jensen, P. A. & Nilsson, J. F., Sept 2020, In: Data and Knowledge Engineering. 129, 23 p., 101848.

    Research output: Contribution to journalJournal articleResearchpeer-review