Page Not Found
Page not found. Your pixels are in another canvas.
A list of all the posts and pages found on the site. For you robots out there is an XML version available for digesting as well.
Page not found. Your pixels are in another canvas.
About me
Published in Explorations in Economic History, 2023
Recommended citation: Dahl, Christian M., Torben S. D. Johansen, Emil N. Sørensen, and Simon F. Wittrock (2023). “HANA: A HAndwritten NAme Database for Offline Handwritten Text Recognition”. In: Explorations in Economic History 87, p. 101473. doi: 10.1016/j.eeh.2022.101473. https://www.sciencedirect.com/science/article/pii/S0014498322000511
Published in Historical Methods: A Journal of Quantitative and Interdisciplinary History, 2023
Recommended citation: Dahl, Christian M., Torben S. D. Johansen, Emil N. Sørensen, Christian E. Westermann, and Simon F. Wittrock (2023). “Applications of machine learning in tabular document digitisation”. In: Historical Methods: A Journal of Quantitative and Interdisciplinary History 56.1, pp. 34–48. doi: 10.1080/01615440.2023.2164879. https://www.tandfonline.com/doi/abs/10.1080/01615440.2023.2164879
Published in International Journal of Epidemiology, 2023
Recommended citation: Bjerregaard, L. G., Wüst, M., Johansen, T. S. D., Sørensen, T. I. A., Dahl, C. M., & Baker, J. L. (2023). Cohort Profile: The Copenhagen Infant Health Nurse Records (CIHNR) cohort. International Journal of Epidemiology, 52(6), e340–e346. https://academic.oup.com/ije/advance-article-abstract/doi/10.1093/ije/dyad096/7219285
Published in PAIN Reports, 2023
Recommended citation: Bested, K., Jensen, L. M., Andresen, T., Tarp, G., Skovbjerg, L., Johansen, T. S. D., Schmedes, A. V., Storgaard, I. K., Madsen, J. S., Werner, M. U., and Bendiksen, A. (2023). Low-dose naltrexone for treatment of pain in patients with fibromyalgia: a randomized, double-blind, placebo-controlled, crossover study. PAIN Reports, 8(4), e1080. https://journals.lww.com/painrpts/Fulltext/2023/08000/Low_dose_naltrexone_for_treatment_of_pain_in.3.aspx
Working paper, arXiv, 2024
Recommended citation: Johansen, Torben S. D. (2024). “Optimal Treatment Allocation under Constraints”. In: arXiv preprint arXiv:2404.18268 https://arxiv.org/abs/2404.18268
Published in Public Health, 2024
Recommended citation: Bjerregaard, L. G., Johansen, T. S. D., Dahl, C. M., & Baker, J. L. (2024). Duration and intensity of being breastfed and educational attainment, income and labour force participation: a prospective cohort and sibling study from Denmark. Public Health, 237, 37-43. https://www.sciencedirect.com/science/article/pii/S003335062400372X
Working paper, 2024
Recommended citation: Dahl, Christian M., Sam Il Myoung Hwang, Torben S. D. Johansen, Munir Squires (2024). “Improving Historical Census Transcriptions: A Machine Learning Approach”. https://www.dropbox.com/scl/fi/ay275j12rqeru6rsncw9w/DHTS_06302024.pdf?rlkey=rhb0dg7sayoobcqxxm84cdcrb&e=1&st=i25zzn4s&dl=0
Working paper, arXiv, 2026. Revise and resubmit at Explorations in Economic History
Recommended citation: Dahl, Christian M., Torben S. D. Johansen, and Christian Vedel (2026). “Breaking the HISCO Barrier: Automatic Occupational Standardization with OccCANINE”. In: arXiv preprint arXiv:2402.13604 https://arxiv.org/abs/2402.13604
Published in Diabetes Research and Clinical Practice, 2026
Recommended citation: Johansen, M. S., Stidsen, J. V., Hansen, A. L., Johansen, T. S. D., Nielsen, J. S., Pedersen, F. N., Grauslund, J., Olsen, M. H., Højlund, K., & Olesen, T. B. (2026). Inflammatory biomarkers as prognostic tools for diabetic retinopathy progression: a prospective study. Diabetes Research and Clinical Practice, 235, 113195. https://doi.org/10.1016/j.diabres.2026.113195
Published in The Economic Journal, 2026
Recommended citation: Baker, Jennifer L., Lise G. Bjerregaard, Christian M. Dahl, Torben S. D. Johansen, Emil N. Sørensen, and Miriam Wüst (2026). “Universal Investments in Toddler Health. Learning from a Large Government Trial”. In: The Economic Journal, ueag057. doi: 10.1093/ej/ueag057. https://academic.oup.com/ej/advance-article-abstract/doi/10.1093/ej/ueag057/8667138
Published in International Journal on Document Analysis and Recognition (IJDAR), 2026
Recommended citation: Dahl, Christian M., Torben S. D. Johansen, Emil N. Sørensen, Christian E. Westermann, and Simon F. Wittrock (2026). “DARE: A large-scale handwritten DAte REcognition system”. In: International Journal on Document Analysis and Recognition (IJDAR). doi: 10.1007/s10032-026-00587-5. https://link.springer.com/article/10.1007/s10032-026-00587-5
Working paper, arXiv, 2026
Recommended citation: Bearth, Nora, Nadja van 't Hoff, and Torben S. D. Johansen (2026). “Group-Level Treatment Effect Heterogeneity in Difference-in-Differences: A Balanced Approach”. In: arXiv preprint arXiv:2606.24785 https://arxiv.org/abs/2606.24785
Working paper, arXiv, 2026
Recommended citation: Johansen, Torben S. D., Julius Koschnick, and Christian Vedel (2026). “How to deal with machine learning bias in economic history”. In: arXiv preprint arXiv:2606.28063 https://arxiv.org/abs/2606.28063
Published:
Presented the paper “Universal Investments in Toddler Health: Learning from a Large Government Trial”.
Published:
Presented the paper “Universal Investments in Toddler Health: Learning from a Large Government Trial”.
Published:
Presented the paper “Universal Investments in Toddler Health: Learning from a Large Government Trial”.
Published:
Presented my work on transcription of Danish censues as part of the Link-Lives project during an informal meeting of the HCNC group. Joint presentation with Nicolai Rask Mathiesen.
Published:
Presented my work on synergies between ML-based transcription and record linkage at the Machine Learning in Economic History Workshop at Lund University.
Published:
Presented my work on synergies between ML-based transcription and record linkage at the 13th Annual Workshop on “Growth, History and Development” (New Data Sources and Human Capital in the Long Run) at University of Southern Denmark
Published:
Presented my work on large-scale transcription at the Department Forum on AI, Department of Regional Health Research, at University of Southern Denmark. Invited talk.
Published:
Presented my work on transcription of the “Copenhagen Health Visitor Record”, used in projects such as the paper “Universal Investments in Toddler Health: Learning from a Large Government Trial”, alongside some more method-heavy large-scale transcription work.
Published:
Presented my work on transcription at a “Data Science Paper Review and Chat” weekly data science meeting of Findmypast. Invited talk.
Published:
Presented my work on large-scale transcription at a department seminar at Lund University. Invited talk.
Published:
Presented methods in causal machine learning in the session “Supercharge Your Causal Inference with Machine Learning” together with Alexander O. K. Marin, Phillip Heiler, and Nadja van ‘t Hoff. Session organizer.
Published:
Presented the project “Improving Historical Census Transcriptions: A Machine Learning Approach”.
Published:
Presented the project “Improving Historical Census Transcriptions: A Machine Learning Approach”.
Published:
Presented the project “Optimal Treatment Allocation Under Constraints”. Invited talk.
Published:
Presented the project “Optimal Treatment Allocation Under Constraints”.
Published:
Presented the project “Breaking the HISCO Barrier: Automatic Occupational Standardization with OccCANINE”.
Published:
Presented the project “Improving Historical Census Transcriptions: A Machine Learning Approach”.
Published:
Presented the project “Improving Historical Census Transcriptions: A Machine Learning Approach”.
Published:
Presented the project “Breaking the HISCO Barrier: Automatic Occupational Standardization with OccCANINE”.
Published:
Invited as panelist to the session “Complexity, Consequences, and Best Practices for AI in Historical Social Science Research and Data Development”.
Published:
Presented the project “Improving Historical Census Transcriptions: A Machine Learning Approach”.
Published:
Presented the project “Job Amenities and Old Age Labor Supply: Evidence from Danish Administrative Data”.
Published:
Presented the project “Job Amenities and Old Age Labor Supply: Evidence from Danish Administrative Data”. Invited talk.
Published:
Presented the project “Group-Level Treatment Effect Heterogeneity in Difference-in-Differences: A Balanced Approach”. Invited talk.
Published:
Presented the project “Group-Level Treatment Effect Heterogeneity in Difference-in-Differences: A Balanced Approach”. Invited talk.
TA, master level course, University of Southern Denmark, 2019
Course for the Economics master’s program (10 ECTS).
Guest Lecturer, bachelor level course, University of Southern Denmark, 2019
Course for the Economics bachelor’s program (10 ECTS).
Lecturer, master level course, University of Southern Denmark, 2020
Course for the Data Science master’s program (10 ECTS). The course covers support vector machines, random forests, boosting, and deep learning, with an emphasis on deep learning. The goal is to give students the ability to confidently apply state-of-the-art machine learning methods to a broad class of problems, including computer vision and natural language processing.
Guest Speaker, Brigham Young University (virtual), 2022
Invited speaker at the Record Linking Lab at Brigham Young University on deep learning model deployment on supercomputers.
Guest lecturer, master level course, University of Southern Denmark, 2023
Course for the Data Science master’s program (10 ECTS). The course covers support vector machines, random forests, boosting, and deep learning, with an emphasis on deep learning. The goal is to give students the ability to confidently apply state-of-the-art machine learning methods to a broad class of problems, including computer vision and natural language processing.
Lecturer, bachelor level course, University of Southern Denmark, 2024
Course for the GMM engineering bachelors’s program (5 ECTS). The course cover introductory statistics, including probability theory, confidence intervals, hypothesis testing, linear regression analysis, factor analysis, and cluster analysis. The goal is to give students the ability to confidently perform and interpret statistical analyses.
Lecturer, PhD and master level course, University of Southern Denmark, 2024
PhD-course and elective summer course for the Economics master’s program (10 ECTS).
Lecturer, bachelor and master level course, University of Southern Denmark, 2024
Course for the PDI engineering bachelors’s and master’s program (5 ECTS). The course cover introductory statistics, including probability theory, confidence intervals, hypothesis testing, linear regression analysis, factor analysis, and cluster analysis. The goal is to give students the ability to confidently perform and interpret statistical analyses.
Lecturer, master level course, University of Southern Denmark, 2025
Elective course for the economics master’s program (10 ECTS). The aim of this course is to enable students to use state-of-the-art methods in machine learning, including their applications in economics and finance.
Lecturer, PhD and master level course, University of Southern Denmark, 2025
PhD-course and elective summer course for the Economics master’s program (10 ECTS).
Lecturer, bachelor level course, University of Southern Denmark, 2025
Course for the Economics bachelor’s program (10 ECTS).
Lecturer, master level course, University of Southern Denmark, 2026
Elective course for the economics master’s program (10 ECTS). The aim of this course is to enable students to use state-of-the-art methods in machine learning, including their applications in economics and finance. Awarded Teacher of the Year (DKK 40,000) by the Faculty of Social Sciences, University of Southern Denmark (2026).
Lecturer, PhD and master level course, University of Southern Denmark, 2026
PhD-course and elective summer course for the Economics master’s program (10 ECTS).
Lecturer, bachelor level course, University of Southern Denmark, 2026
Course for the Economics bachelor’s program (10 ECTS).