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Dr. Henry Tirri
Senior Vice President, Head of Nokia Research Center
Contact
I am responsible for the Nokia's long-term research at the NRC laboratories and units worldwide. NRC mission is to develop cutting-edge technology and innovations for user-centric solutions and successfully transfer them to Nokia businesses. These innovations are developed in collaboration of the global open innovation network. Therefore NRC has a strong presence in many of the world leading innovation ecosystems including Silicon Valley, Beijing, Cambridge(MA), Hollywood, Helsinki, Tampere, Lausanne, Bangalore, Nairobi and Cambridge (UK). In addition my Nokia role I am also an Adjunct Professor of Computer Science (University of Helsinki), and an Adjunct Professor of Computational Engineering (Helsinki University of Technology).
Contact information:
Nokia Research Center, P.O. Box 407,
Nokia Group, FIN-00045, Finland
Research Interests |
During my career my general research interests have been related to intelligence in machines. Reasoning under uncertainty is one central aspect of intelligent behavior, consequently the last 20 years I have been interested in fundamental questions related to building models from data, and performing (predictive) inference from such models (related to "data analysis"). After exploring many paradigms from rule-based deterministic models to semantic nets I have found the probabilistic and information-theoretic approaches to be the most interesting and powerful. Some of the results of the research (with my former CoSCo research group) have been implemented in B-Course data analysis service. Recent years I have been particularly interested in applying these modeling methods to information retrieval including Internet search engines and wireless sensor networks. What excites me currently is the possibility to develop applications and services that do not "scale-down" but allow millions of computing devices to interact and implement very large-scale services depending on contextual data.
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Research Projects |
Some past research activities I found cool to be part of working with some great colleagues:
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Conferences | Recent and current Conference involvement (i.e., What I do to keep me posted on interesting research):
- ECUST'09,
INSS2008, ECCBR'08, AWeSOME'08, UAI'08, VLDB'07, NGMAST'07, EmNets 2007, SenSys'06, WI 2006, ECML/PKDD'06, AWeSOMe'06, ICETE 2006, UAI'06, AAAI 2006, ASWN 2006, SAINT 2005, AISTATS 2005, ICCBR 2005, SME'05, ICETE 2005, AWeSOMe'05, MDM'06, WI'05.
- I was the Industrial Program Chair of WISE 2009 and Program Co-Chair of SAINT 2008
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Supporting/Other Information | Past Professional Activities
- Visiting scholar, University of Texas at Austin and consultant, Microelectronics and Technology Corporation MCC; database transaction processing, functional languages and parallel processing (1985-86)
- Visiting scientist, AT & T Bell Laboratories; neural networks stuff in machine vision (1988)
- Visiting Associate Professor, Purdue University; research on distributed, object-oriented databases, neural networks, probabilistic modeling (1990-92)
- Project manager, ESPRIT projects VITAL and TRANSCOOP; software engineering for knowledge bases, in particular representation transformations and transactional workflows (1992-1997)
- Visiting scientist, NASA Ames Research Center; Bayesian modeling (1998)
- Professor, University of Helsinki, Director of the Intelligent Systems Lab and CoSCo research group; Bayesian and information-theoretic modeling, intelligent learning environments (1998-2008)
- co-founder of Ekahau Inc.; award-winning technology for positioning - Ekahau in news (2000-)
- Visiting professor, Stanford University; positioning of mobile devices, ad hoc networks (2001-2003)
- Visiting scholar, University of California, Berkeley; information retrieval and search engines (2003-2004)
Some recent media&interviews
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Publications |
Recent publications (last 5 years)
- H.Tirri, "Spotting": A Novel Application of Wireless Sensor Networks in the Home. Pp. 197-206n Technologies for Home Networking, edited by S. DIxit and R. Prasad, Wiley, 2008.
- Nokelainen, P., Silander, T., Ruohotie, P., & Tirri, H. (2007). Investigating the Number of Non-linear and Multi-modal Relationships between Observed Variables Measuring a Growth-oriented Atmosphere. Quality & Quantity, 41(6), 869-890 .
- J.Kurhila, M.Miettinen, P. Nokelainen, H.Tirri, EDUCO: Social Navigation and Group Formation in Student-Centred E-Learning. Journal of Interactive Learning Research, Vol. 18, No.1, 65-83.
- J. Perkio, V. Tuulos, M. Hermersdorf, H. Nyholm, J. Salminen and H. Tirri, Utilizing Rich Bluetooth Environments for Identity Prediction and Exploring Social Networks as Techniques for Ubiquitous Computing. Pp. 137-141 in Proceedings of the 2006 IEEE/WIC/ACM International Conference on Web Intelligence, edited by T. Nishida, Z. Shi, U. Visser, X. Wu, J. Liu, B. Wah, W. Cheung and Y.-M. Cheung. IEEE Computer Society, 2006.
- P. Nokelainen, T. Silander, P. Ruohotie and H. Tirri, Investigating the Number of Non-linear and Multi-modal Relationships Between Observed Variables Measuring Growth-oriented Atmosphere. Quality and Quantity, 40 (2006)
- T. Roos, P. Grunwald, P. Myllymaki and H. Tirri, Generalization to Unseen Cases. Pp. 1129-1136 in Advances in Neural Information Processing Systems 18 (NIPS 05), edited by Y. Weiss, B.Scholkopf and J. Platt. MIT Press, Cambridge, MA, 2006.
- J.Veijalainen, V.Terziyan, H.Tirri, Transaction management for m-commerce at mobile terminal. Electronic Commerce Research and Applications, Vol. 5 (2005), 229-245.
- J. Perkiö¶. Tuulos, W. Buntine, H. Tirri, Multi-Faceted Information Retrieval System for Large Scale Email Archives. To appear in Proceedings of the IEEE/WIC/ACM Conference on Web Intelligence (WI 2005)
- P.Nokelainen, M.Miettinen, J.Kurhila, P.Floré, H.Tirri, A Shared Document-Based Annotation Tool to Support Learner-Centered Collaborative Learning. British Journal of Educational Technology, Vol. 36, No. 5, 757-770.
- M. Miettinen, J. Kurhila, P. Nokelainen and H. Tirri, Supporting Open-Ended Discourse with Transparent Groupware. International Journal of Web Based Communities, Vol. 2, No. 1, pp. 17-30.
- M.Miettinen, P.Nokelainen, J.Kurhila, T.Silander, H.Tirri, EDUFORM - A Tool for Creating Adaptive Questionnaires. International Journal on E-Learning, Vol. 4 (2005), No. 3, 365-373.
- M. Miettinen, J. Kurhila, H. Tirri, On the Prospects of Intelligent Collaborative E-learning Systems. Pp. 483-490 in the Proceedings of the 12th International Conference on Artificial Intelligence in Education. IOS Press
- T.Roos, H.Wettig, P.Grü, P.Myllymä, H.Tirri, On Discriminative Bayesian Network Classifiers and Logistic Regression. To appear in Machine Learning.
- M.Miettinen, J.Kurhila, P.Nokelainen, H.Tirri, OurWeb - Transparent Groupware for Online Communities. Pp. 53-61 in the Proceedings of the IADIS International Conference on Web-Based Communities 2005. Algarve, Portugal, February 2005.
- T.Roos, P.Myllymä, H.Tirri, On the Behavior of MDL Denoising. In Proceedings of the 10th International Workshop on Artificial Intelligence and Statistics (AISTATS). Barbados, January 2005.
- N. Zhong, H. Tirri, Y. Yao, L. Zhou (eds.), Proceedings of the IEEE/WIC/ACM International Conference on Web Intelligence (Beijing, China, September 2004). IEEE, 2004.
- V. Tuulos, H. Tirri, Combining Topic Models and Social Networks for Chat Data Mining. Proceedings of the IEEE/WIC/ACM Conference on Web Intelligence (WI'04) (Beijing, China, September 2004), 206-213.
- W. Buntine, J. Löfström, J. Perkiö. Perttu, V. Poroshin, T. Silander, H. Tirri, A. Tuominen, V. Tuulos, A Scalable Topic-Based Open Source Search Engine. Proceedings of the IEEE/WIC/ACM Conference on Web Intelligence (WI'04) (Beijing, China, September 2004), 228-234.
- Keynote talk "Fundamental Challenges of Next Generation Information Retrieval" at ICETE 2004
- Keynote talk "Networked: the new science of collaborative giftedness" at ECHA 2004
- P.Kontkanen, P.Myllymäki, T.Roos, H.Tirri, K.Valtonen, H.Wettig, Topics in Probabilistic Location Estimation in Wireless Networks. Invited talk at the 15th IEEE Symposium on Personal, Indoor and Mobile Radio Communications, Barcelona, Spain. IEEE Press, 2004.
- P.Kontkanen, P.Myllymäki, T.Roos, H.Tirri, K.Valtonen, H.Wettig, Probabilistic Methods for Location Estimation in Wireless Networks. Chapter 11 in Emerging Location Aware Broadband Wireless Adhoc Networks, edited by R.Ganesh, S.Kota, K.Pahlavan and R.AgustÃKluwer Academic Publishers, 2004.
- P.Kontkanen, P.Myllymäki, W.Buntine, J.Rissanen, H.Tirri, An MDL Framework for Data Clustering. In Advances in Minimum Description Length: Theory and Applications, edited by P. Grunwald, I.J. Myung and M. Pitt. The MIT Press, 2004.
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