Teemu RoosPh.D., Assistant Professor
Head of the Information, Complexity and Learning research group
Department of Computer Science and
Helsinki Institute for Information Technology HIIT
Exactum building, A322
PO Box 68
FI-00014 University of Helsinki
teemu.roos at cs.helsinki.fi
I am a member of the organizing committee of the 11th Conference of the European Society for Textual Scholarship (ESTS-2014). The conference will be held in Helsinki on Oct 30-Nov 1, 2014.
We organized the 7th Workshop on Information Theoretic Methods in Science and Engineering (WITMSE) in Hawaii on July 5-8, 2014, right after the ISIT symposium. website
Associated with our CHI-2013 paper, we are lauching a web server for computing the information capacity from your own motion capture data: infocapacity.hiit.fi. Please ask for a beta testing account.
My traveling/conference schedule in 2014:
- Villa Lante, Institutum Romanum Finlandiae, Rome, March 28–April 8.
- ISIT-2014 and WITMSE-2014, Hawaii, June 29–July 7.
- ESTS-2014, Helsinki, October 30–November 1.
- Royal Society meeting: Evolutionary analysis beyond the gene, Chicheley Hall, UK, 17–18 November.
Starting in October 2013, I am a Fellow of the Finnish Institute in Rome (Villa Lante).
Since November 2013, following Prof Juho Rousu, I am the host of the Helsinki Distinguished Lecture Series on Future Information Technology.
I have been appointed from 4/2013 onwards as an Assistant Professor (tenure-track) at the Department of Computer Science, University of Helsinki.
In January–April 2012, I was a Visiting Fellow at the University of Cambridge.
Conference and workshop involvement (program committee or equivalent): AISTATS-2011/2014, ECAI-2008, ECML/PKDD-2009/2012, ICDM-2014, IJCAI-2013, NIPS-2014, PGM-2008/2012/2014, S85MC-2011, UAI-2008/2009/2010/2011/2012/2013/2014, WITMSE-2008/2009.
In 2014, I will teach
- Introduction to Artificial Intelligence (Johdatus tekoälyyn). Period I. The language of the course is Finnish.
- Information-Theoretic Modeling. Period I.
- Project in Information-Theoretic Modeling. Period II.
The 5th Brazilian Conference on Statistical Modelling in Insurance and Finance was held in Maresias, Brazil, on April 10–15, 2011. I gave a two-day short course on MDL. lecture notes | slides (day1) | slides (day2)
I am the instructor of the Undergraduate Research Track (tutkijalinja).
I am currently supervising:
- Jussi Määttä (PhD student)
- Yuan Zou (PhD student)
- Peter Hedman (Msc student, co-supervised with Prof Petri Myllymäki)
- Simo Linkola (MSc student)
- Janne Leppä-aho (MSc student, co-supervised with Prof Jukka Corander)
- Arttu Modig (MSc student, co-supervised with Prof Jouko Lampinen)
- Quan Nguyen (MSc student)
- Olli Orajärvi (MSc student)
- Henning Lübbers (MSc, co-supervised with Prof Jyrki Kivinen)
- Anupam Arohi (MSc)
- Yuan Zou (MSc)
- Teemu Pulkkinen (MSc)
- Toni Merivuori (MSc)
- Lari Latvala (Msc, co-supervised with Prof Jouko Laasasenaho)
Students interested in MSc/PhD thesis topics related to information theory, statistical modeling, machine learning, artificial intelligence, and digital humanities are welcome to contact me by e-mail (but see disclaimer below).
Disclaimer: If you currently not enrolled at the University of Helsinki, please do not send me e-mail, but contact the Department of Computer Science for information about the application process. Unfortunately I cannot reply to all e-mail inquiries.
``Your act was unwise,'' I exclaimed ``as you see by the
He solemnly eyed me. ``When choosing the course of my action,''
said he, ``I had not the outcome to guide me.''
I am the leader of the Information, Complexity and Learning (ICL) research group, which is a part of the CoSCo research group lead by Prof Petri Myllymäki. I'm also affiliated with the Academy of Finland funded Centre of Excellence COIN.
Topics of my interest include
Recent and ongoing work:
- J. Määttä, S. Siltanen, and T. Roos, (2014).
A fixed-point image denoising algorithm with automatic window selection,
to appear in 5th European Workshop on Visual Information Processing
- S. Tasoulis, L. Cheng, N. Välimäki, N. Croucher, S. Harris, W. Hanage, T. Roos, and J. Corander, (2014).
Random projection based clustering for population genomics,
in IEEE International Conference on Big Data
- A. Barron, T. Roos, and K. Watanabe, (2014).
Bayesian properties of normalized
maximum likelihood and its fast computation,
in Proc. IEEE International Symposium on Information
- M. Sherman, G. Clark, Y. Yang, S. Sugrim, A. Modig, J. Lindqvist,
A. Oulasvirta, and T. Roos, (2014).
User-generated free-form gestures for authentication: security and memorability,
in Proc. 12th International Conference on Mobile Systems, Applications, and Services (MobiSys-2014).
- R. Eggeling, T. Roos, P. Myllymäki, and I. Grosse, (2014).
Robust learning of inhomogeneous PMMs,
in Proc. 17th Conference
on Artificial Intelligence and Statistics
- K. Watanabe, T. Roos, and P. Myllymäki, (2013).
Achievability of asymptotic minimax regret in online and batch prediction,
in Proc. 5th Asian Conference on Machine Learning
JMLR W&CP 29, pp. 181–196.
- A. Oulasvirta, T. Roos, A. Modig, and L. Leppänen, (2013).
Information capacity of full-body movements, in
Proc. 2013 ACM SIGCHI Conference on Human Factors in Computing
Systems (CHI-2013), ACM.
Best paper honorable mention award.
- T. Roos and Y. Zou, (2013). Keep it simple
stupid—On the effect of lower-order terms in BIC-like
criteria, invited paper in Proc. 2013 Information Theory
and Applications Workshop,
- T. Roos and Y. Zou, (2011).
Analysis of textual variation by latent
in Proc. 2011 International Conference on Data Mining (ICDM-2011),
IEEE Press, pp. 567–576.
- A. Carvalho, T. Roos, A. Oliveira, and
P. Myllymäki, (2011). Discriminative learning of Bayesian
networks via factorized conditional log-likelihood,
- T. Pulkkinen, T. Roos, and P. Myllymäki, (2011).
Semi-supervised learning for WLAN positioning,
in Proc. ICANN 2011,
Lecture Notes in Computer Science 6791–6792, Springer,
- T. Silander, T. Roos, and P. Myllymäki, (2010).
Learning locally minimax optimal Bayesian networks,
International Journal of Approximate Reasoning 51(5):544–557.
- J. Rissanen, T. Roos, and P. Myllymäki, (2010).
Model selection by sequentially normalized least squares,
of Multivariate Analysis 101:4, 839–849.
| R code
- T. Roos, P. Myllymäki, and J. Rissanen, (2009).
MDL denoising revisited,
Transactions on Signal Processing, 57:9, 3347–3360.
| supplementary material
| C code
- T. Roos and T. Heikkilä, (2009).
Evaluating methods for
computer-assisted stemmatology using artificial benchmark
Linguistic Computing, 24:4, 417–433, doi:10.1093/llc/fqp002.
abstract | data-sets
I was a co-chair of WITMSE-2013 in Tokyo, Japan, August 26–29.
My traveling/conference schedule in 2013:
- University of Cambridge, UK, January 10–12.
- ITA-2013, San Diego, February 10–15.
- CHI-2013, Paris, April 27–May 2.
- WITMSE-2013, Tokyo, August 26–29.
- Villa Lante, Institutum Romanum Finlandiae, Rome, October 18–December 28.
Our paper "Information capacity of full-body movements" gets a Best Paper Honorable Mention Award at CHI-2013. If you are planning to attend the conference, please visit our fun interactive Kinect-based demo!
Special issue on selected papers from PGM-2010 in the International Journal of Approximate Reasoning (editors Roos, Myllymäki, Jaakkola): link to editorial and articles.
I was an external evaluator at the PhD thesis defense of Thomas Toftkjær at Aarhus University on January 10, 2012.
My traveling/conference schedule in 2012:
- University of Aarhus, Denmark, January 10.
- University of Cambridge, UK, January 16–April 30.
- ITA-2012, San Diego, February 6–10.
- University of Oxford, UK, March 7–8.
- University of East Anglia, UK, March 22–23.
- Durham University, UK, April 2–5.
- WITMSE 2012, Amsterdam, August 26—30.
- University of Bern, Switzerland, November 22–24.
The Academy of Finland Centre of Excellence COIN starts in 1/2012.
Tuomas Heikkilä, Petri Myllymäki and I organize a series of stemmatology workshops in Helsinki and elsewhere in 2010–2012. web pages
- Studia Stemmatologica IV, University of Cambridge and Microsoft Research, Cambridge, UK, March 21–26.
- BCSMIF-2011 and University of Sao Paulo, Brazil, April 9–17.
- ICANN-2011, Helsinki, June 14–17.
- ISIT-2011, St. Petersburg, Russia, July 31–August 5.
- WITMSE-2011, Helsinki, August 7–10.
- Studia Stemmatologica V, Rome, October 5–8, 2011.
- Nonlinear physics (!), Stockholm, October 18–20, 2011.
- ICDM-2011, Vancouver, December 11–14, 2011.
4/2011: I was conferred the title Adjunct Professor (in Finnish, dosentti) by the Faculty of Science, and appointed as a senior reseacher at HIIT.
I was invited to the senior program committee of UAI-2011.
The Academy of Finland has graciously decided to fund me under a postdoctoral researcher's project.
Petri Myllymäki, Tommi Jaakkola, and I were the program committee co-chairs of the 5th European Workshop on Probabilistic Graphical Models (PGM-2010) in Helsinki, September 13–15, 2010. web pages
My traveling schedule in 2010:
- MIT, Boston, February 8–April 30.
- Columbia University, New York, February 22–23.
- Yale, New Haven, April 1–2.
- Washington University, St. Louis, April 22–23.
- SCAS, Uppsala, Sweden, June 21–23.
- UCLA & UAI-2010, Los Angeles, July 8–11.
- WITMSE-2010, Tampere, Finland, August 16–18.
- Studia Stemmatologica, Pisa, Italy, November 21–24.
I got the ERCIM (European Research Consortium for Informatics and Mathematics) 2009 Cor Baayen Award.
- ITA-2009, San Diego & HP Labs, Palo Alto, February 8–13.
- ITW-2009, Volos, Greece, June 10–12.
- ISIT-2009, Seoul, Korea, June 28–July 3.
- WITMSE-2009, Tampere, Finland, August 17–19.
- ISTI/CNR & Univ. Pisa, Pisa, Italy, November 5–6.
The Finnish Cultural Foundation has awarded a Science Workshop grant (EUR 200,000) on stemmatology for the years 2009–2010. announcement (w/ fanfares) (in Finnish)
As of August 2008, I have been appointed as post-doctoral researcher at HIIT for three years.
During the Fall term 2007 I lectured the Three Concepts: Information course.
I defended my Ph.D. thesis "Statistical and Information-Theoretic Methods for Data Analysis" on June 9, 2007. The opponent was Prof. Alon Orlitsky (UCSD). Pre-examiners were Prof. Ioan Tabus (Tampere UT) and Prof. Tommi Jaakkola (MIT). electronic version (summary part).
I received a Ph.D. degree (in Computer Science) from the University of Helsinki in 2007. I was supported by HeCSE (Helsinki Graduate School in Computer Science and Engineering). My supervisors were Prof. Henry Tirri (on industrial leave), and Prof. Petri Myllymäki. In addition to computer science I have minors in mathematics and philosophy (see a list of finished courses).
am married to the loveliest girl in the world, the light of my life,
Eira. ''You are the reason I am. You are all my reasons.''
Since July 31st 2003, the universe revolves around a boy. Since March 1st 2007, we have two boys!
Play a game of Rock, Paper, Scissors: rock beats scissors, paper beats rock, and scissors beat paper. Even such a simple game offers some theoretically interesting problems: Can one predict the other player's choice? What is the best strategy against a good opponent? (Yes, the computer could cheat, but I promise it doesn't.) Such questions were considered by Claude Shannon in the 1950s; see a modern variation of his 'Mind-Reading Machine' based on data-compression (CTW).