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Jørgen Villadsen er ekspert i logik og dens anvendelser, specielt inden for kunstig intelligens, datalingvistik og datasikkerhed. Han arbejder i den forbindelse med både klassisk og ikke-klassisk logik, herunder højere-ordens-logik, der har væsentlige fordele i forbindelse med formalisering af visse domæner, blandt andet ordinær matematik, specifikation af software og hardware, samt computer-behandling af naturlige sprog som dansk og engelsk. Han har stor erfaring med logikprogrammering og automatiske bevisførere. Hans øvrige forskningstemaer omfatter modal-logik og constraint-teknikker.
Jørgen Villadsen er lektor ved Institut for Matematik og Computer Science (DTU Compute). Han er uddannet civilingeniør på DTU i 1989 og ph.d. i 1995. Han var adjunkt på DTU i 1999-2002 og derefter lektor i datalogi på Roskilde Universitetscenter (RUC) indtil 1. juli 2006, hvor han vendte tilbage til DTU. De tidligere ansættelser inkluderer Prolog Development Center A/S, Forsvarets Forskningstjeneste (FOFT), Tryg-Baltica A/S, Center for Sprogteknologi (CST) og UNI-C - Danmarks IT-Center for Uddannelse og Forskning.
Jørgen Villadsen har mere end 90 videnskabelige publikationer og er medredaktør af flere bøger og proceedings. Han har været medarrangør af adskillige internationale konferencer og workshops. Han er medlem af Association for Symbolic Logic (ASL).
Jørgen Villadsen har især undervist i logik, algoritmik, programmering og intelligente systemer. Han er endvidere studieleder for kandidatuddannelsen i informationsteknologi.
Other information
Centre for Mathematics and Computer Science (CWI), Amsterdam (6 months).
Dae Duck Electronics (IAESTE), South Korea (2 months).
European Organization for Nuclear Research (CERN), Geneve (3 months).
Davies's School of English (EUROCENTRES), London (1 month).
Institute of National Research Council of Italy (CNUCE), Pisa (2 months).
Language Skills:
Danish
English
Research areas
Logic
-Automated Reasoning
-Constraint Based Tools
-Natural Language Processing
-Security
Education/Academic qualification
PhD in Computer Science, Technical University of Denmark
1989 → 1995
MSc in Computer Science, Technical University of Denmark
1984 → 1989
External positions
Associate Professor, Technical University of Denmark
2006 → …
Associate Professor, Roskilde University
2002 → 2006
Assistant Professor, Technical University of Denmark
1999 → 2002
Software Engineer, Prolog Development Center
… → 1999
Keywords
- User defined:
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Collaborations and top research areas from the last five years
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Formalizing Axiomatics for First-Order Logic
Villadsen, J., Lund, S. T. & Schlichtkrull, A., 2025. 8 p.Research output: Contribution to conference › Paper › Research › peer-review
Open AccessFile11 Downloads (Orbit) -
Minimal Sequent Calculus for Teaching First-Order Logic: Lessons Learned
Villadsen, J., 2025, In: Electronic Proceedings in Theoretical Computer Science, EPTCS. 419, p. 75-89Research output: Contribution to journal › Journal article › Research › peer-review
Open AccessFile30 Downloads (Orbit) -
Teaching Axiomatic Systems and Metatheory in Isabelle
Villadsen, J., 2025. 1 p.Research output: Contribution to conference › Conference abstract for conference › Research › peer-review
Open AccessFile4 Downloads (Orbit) -
A Formalization of Sequent Calculus for Classical Implicational Logic
Jacobsen, F. K. & Villadsen, J., 2024, Proceedings of Isabelle Workshop 2024. 15 p.Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review
Open AccessFile213 Downloads (Orbit) -
Formalizing Implicational Axiomatics for Classical First-Order Logic with Functions in Isabelle/HOL
Villadsen, J. & Pettinau, R., 2024. 3 p.Research output: Contribution to conference › Conference abstract for conference › Research › peer-review
Open AccessFile45 Downloads (Orbit)
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Secure TaRDIS
Lund, S. T. (PhD Student), Mödersheim, S. A. (Main Supervisor), Scalas, A. (Supervisor) & Villadsen, J. (Supervisor)
01/08/2023 → 31/07/2026
Project: PhD
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User-Friendly Formal Methods
Jacobsen, F. K. (PhD Student), Villadsen, J. (Main Supervisor), Scalas, A. (Supervisor), Peters, K. B. (Examiner) & Traytel, D. (Examiner)
01/07/2021 → 05/11/2024
Project: PhD
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Formally Correct Deduction Methods for Computational Logic
From, A. H. (PhD Student), Paulson, L. C. (Examiner), Villadsen, J. (Main Supervisor), Gierasimczuk, N. (Supervisor) & Braüner, T. (Examiner)
01/02/2020 → 14/06/2023
Project: PhD
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Logical Foundations of Al Algorithms
Jensen, A. B. (PhD Student), Traytel, D. (Examiner), Villadsen, J. (Main Supervisor), Mödersheim, S. A. (Supervisor) & Dix, J. (Examiner)
01/02/2019 → 09/06/2022
Project: PhD
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Hospital Staff Planning with Multi-Agent Goals
Larsen, J. B. (PhD Student), Villadsen, J. (Main Supervisor), Carstens, N. (Supervisor), Holst, C. K. (Supervisor), Gierasimczuk, N. (Examiner), Rosendahl, M. (Examiner) & Dix, J. (Examiner)
01/09/2016 → 11/12/2019
Project: PhD
Activities
- 1 Conference presentations
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On Natural Deduction and Axioms for Propositional and First-Order Logic
Villadsen, J. (Invited speaker)
17 Sept 2025Activity: Talks and presentations › Conference presentations