Inverse Days 2022

Tahko Ski Resort, Kuopio, Finland, December 12–16, 2022

The 28th Inverse Days invites people interested in all kinds of inverse problems to Kuopio on December 12–16 2022. The Inverse Days conference is the annual meeting of the Finnish Inverse Problems Society, organised this year by the University of Eastern Finland. It is also a part of the activities of the Finnish Centre of Excellence in Inverse Modelling and Imaging. In 2022, the Inverse Days is arranged as a week long event on the occasion of 60th birthday of Professor Jari Kaipio who is one of the founders of the Finnish Inverse Problems Society. All speakers are encouraged to share stories and pictures of Jari in their talks.

Jari Kaipio received his MSc degree in physics from the University of Kuopio, Finland in 1989 and a second major in mathematics in 1992. He received his PhD from University of Kuopio, Finland 1996 and the title of docent in 1997. In 1997, he was also appointed as a Professor at the University of Kuopio, where he was the head of the Department of Applied Physics in 1997-2008, during which time the department grew from a small unit of 15 people to a recognised department of over 100 researchers. He was on part-time leave from the University of Kuopio (University of Eastern Finland since 2010) while holding a position of Professor in Mathematics at the University of Auckland, New Zealand 2011-2021. Since 2022 he has been a full-time professor and the head of the Department of Applied Physics at the University of Eastern Finland.

Jari Kaipio’s research interests include computational and Bayesian inverse problems. He is especially known for his work on non-stationary inverse problems and Bayesian approximation error modelling. Jari Kaipio is an author of over 250 papers, and a book “Statistical and Computational Inverse Problems” together with Professor Erkki Somersalo. He has supervised over 40 PhD theses and over 30 MSc theses, and he is known as an excellent and well-liked lecturer and mentor. He has secured major research funding for example from the Academy of Finland and TEKES, and he is one of the original PIs in the Finnish Centre of Excellence in Inverse Problems Research and founders of the Finnish Inverse Problems Society. He is also a co-founder of spin-off companies Numcore and Rocsole.    


The event will start at 14:30 on Monday 12th and end at 11:00 on Friday 16th. See the full schedule on the program page.

Changes in the program:

  • Tuesday 13.12. at 14:00-14:30: A. Lehikoinen’s talk is cancelled
  • Wednesday 14.12. at 10:40-11:00: J. Poimala’s talk is given by A. Hauptmann
  • Wednesday 14.12. at 14:30-14:50: A. Mikkonen’s talk is cancelled
  • Wednesday 14.12. Pitch talk by A. Hauptmann is cancelled
  • Friday 16.12. at 10:00-10:20: The talk will be given by E. Pasca and J. Sauer Jørgensen

Book of abstracts



The are two classes of on-site registration fees:

  • Early bird registration: register by September 30, fee 350 €
  • Normal registration: register by October 30, fee 450 €

The fee includes participation, bus transportation between Kuopio train station and Tahko, lunch every day, coffee in the afternoons, a reception on Monday and a conference dinner on Thursday.

The conference can be participated virtually on Monday and Tuesday. Virtual participation is included in the on-site registration fee. For those who wish to participate only virtually, the fee is 50 € and registration deadline is October 30.


The payment can be done as a wire transfer by October 30. We cannot accept cash or payment cards of any kind. Wire transfers should be made to the account of the Finnish Inverse Problems Society:

  • Account owner: Suomen inversioseura
  • IBAN: FI72 1012 3000 2079 18

Use the following reference numbers:

  • 211116        Normal payment, one person
  • 211129        Early bird, one person
  • 211132        Online only, one person
  • 211213        Group payment (send email to organisers with a transfer receipt and a list of names )

Abstract submissions

If you wish to give a talk or a short talk in the conference, indicate that in the registration form. (For information on the short talks, cf. the program page.) Further, submit the abstract of your talk by email to the following address: ruanui.nicholson(at) Use the following LaTeX template:

\title{Insert title here}
\author{Firstname, Lastname (a), Firstname, Lastname (b)}
\date{(a): Department, University, City, Country, (b): Company, City, Country}
text here

The submission deadline is October 30.


The event will take place in Break Sokos Hotel Tahko in Tahko Ski Resort, Kuopio. More information on the venue and the conference can be found from the practical information page.


A bus transportation between Kuopio and Tahko is provided for those who reserved that in the online registration. We also have special fees for taxes. See the schedule of the buses and other transport information at the practical information page.


We have accommodation deals reserved both for the hotel and cabins. See more information on the practical information page.


Organisers: Tanja Tarvainen (tanja.tarvainen(at), Aku Seppänen (aku.seppanen(at), Timo Lähivaara (timo.lahivaara(at), Ville Kolehmainen (ville.kolehmainen(at), and Ruanui Nicholson (ruanui.nicholson(at)

If you have any questions, feel free to contact us.