on campus
work from home
out of office

before visiting me, please mail or call

Arjan van Hessen received a master in Geophysics, a PhD in Phonetics and is working in the field of Human Language Technology since '91.

His main interest is in applying the various HLT techniques in both the academic/research and the real world.


  • Computer Science

    • Speech Recognition
    • Textual Information
    • Emotion Detection
    • Keyword Search
    • Multimedia
    • Search Functionality
    • Speaker Diarization
    • Sustainability



Natural Language Processing Markers for Psychosis and Other Psychiatric Disorders: Emerging Themes and Research Agenda From a Cross-Linguistic WorkshopSchizophrenia Bulletin, 49(Supplement 2), S86-S92. Corona Hernández, H., Corcoran, C., Achim, A. M., De Boer, J. N., Boerma, T., Brederoo, S. G., Cecchi, G. A., Ciampelli, S., Elvevåg, B., Fusaroli, R., Giordano, S., Hauglid, M., van Hessen, A., Hinzen, W., Homan, P., de Kloet, S. F., Koops, S., Kuperberg, G. R., Maheshwari, K., … Palaniyappan, L.
Towards an Open-Source Dutch Speech Recognition System for the Healthcare DomainIn 2022 Language Resources and Evaluation Conference, LREC 2022 (pp. 1032-1039). European Language Resources Association (ELRA). Tejedor-García, C., van der Molen, B., van den Heuvel, H., van Hessen, A. & Pieters, T.
Speech, Voice, Text, and Meaning: A Multidisciplinary Approach to Interview Data through the use of digital toolsIn ICMI '20: Proceedings of the 2020 International Conference on Multimodal Interaction (pp. 886-887). Association for Computing Machinery. Hessen, A. V., Calamai, S., Heuvel, H. V. D., Scagliola, S., Karrouche, N., Beeken, J., Corti, L. & Draxler, C. CLARIN transcription portal for interview dataIn LREC 2020 - 12th International Conference on Language Resources and Evaluation, Conference Proceedings (pp. 3353-3359). European Language Resources Association (ELRA). Draxler, C., van den Heuvel, H., van Hessen, A., Calamai, S., Corti, L. & Scagliola, S. the Transcription Hurdle in Dialect Corpus Building: The Corpus of Southern Dutch Dialects as Case StudyFrontiers in Artificial Intelligence, 3, Article 10. Ghyselen, A. S., Breitbarth, A., Farasyn, M., Van Keymeulen, J. & van Hessen, A. hotspots in Brief Eclectic Psychotherapy for PTSD by text and audio miningEuropean Journal of psychotraumatology, 11(1), Article 1726672. Wiegersma, S., Nijdam, M. J., van Hessen, A. J., Truong, K. P., Veldkamp, B. P. & Olff, M.

Research profiles

Courses academic year 2023/2024

Courses in the current academic year are added at the moment they are finalised in the Osiris system. Therefore it is possible that the list is not yet complete for the whole academic year.

Courses academic year 2022/2023

Finished projects



European CHronicle Online

Europees project dat met spraakherkenning de radio/TV uitzendingen (1920-1960) wilde herkennen.


Ducth Speech Recognition

PhD-project (Roeland Ordelman) to develop a LVSR-engine

Anne Frank

Forced Alignment of the spoken diarries of Anne Frank

Het oplijnen van het dakboek van Anne Frank (tekst) met de voorgelezen spraak (Carice van Houten)


ASR on the Buchenwald interviews

Het ontsluiten van 39 interviews met oud-gevangenen van concentratiekamp Buchenwald mbv spraakherkenning.


Oplijnen van 11 interviews met feministen over de vrouwelijke hulpverlening begin jaren 70.


Recognition of the radio-archives of Radio Rijnmond


Opnemen, herkennen, en ontsluiten van opgenomen rechtszittingen.


Nederlandse Ondertiteling

Using ASR for the subtitling of Dutch spoken RTV-programs


ASR for calls to the Dutch Police

Call Routing for non-urgent calls for information of the Dutch Police

Radio Oranje

Forced Alignment of the radio-speeches of Queen Wilhelmina in London (1940-1945)

Forced Alignment of the radio-speeches of Queen Wilhelmina in London (1940-1945)


By speaking out loud in the caisson of the Watersnoodmuseum in Zeeland the name of a person who died during the 1953 flood, the computer reads out a short spoken biography.


Twente News Corpus

Collecting text material for training the language model for the Twente Speech Recognizer

For quite some time I have been active as a researcher in the world of Human Language Technology. Initially as a post-doc in Düsseldorf and Ulm, then at the illustrious Flemish company Lernout and Hauspie, and since 1998 with great pleasure as a researcher HLT at the University of Twente.

The first projects focused on human-machine (telephony) dialogues. Later on, the focus shifted to Large Vocabulary Speech Recognition: the recognition of spontaneous spoken speech in meetings, interviews, over the phone and more.

A neatly pronounced CV (in Dutch) with almost perfect recognition can be found here on my own website.

In the press

In recent years I have occasionally "performed" in the media. This means that there have been a few short TV and Radio interviews with me. I tried to collect all these broadcasts and got them through the speech recognizer: baker eats your own bread :-).

There is also 2x a piece in the newspaper appeared. Finally I wrote quite a few pieces for all kinds of magazines and websites. If I have written it all by myself, I call it a blog and it is under the Blogs, if I was interviewed (and then I could rewrite the whole piece myself anyway), then it comes under Web.

The overview of these "press moments" can be found here.


Visiting address

University of Twente

Citadel (building no. 09), room H200
Hallenweg 15
7522 NH Enschede

Navigate to location


Additional contact information

<p><a href=""></a></p>
<p><a href=""></a> <br></p>
<p><a href=""></a></p>

Scan the QR code or
Download vCard