Justin Dauwels cv(PDF file)   Home phone: +81 48 464 5631 Office phone: +81 48 467 9664 Mobile phone: +81 90 390 25161 Office fax: +81 48 467 9693 E-mail: justin(at)dauwels(dot)com Address: Laboratory for Mathematical Neuroscience RIKEN Brain Science Institute 2-1 Hirosawa, Wako-shi Saitama-ken, 351-0106 Japan

Short Biography

I'm currently a researcher at the Laboratory for Mathematical Neuroscience of Prof. Shun-ichi Amari at the RIKEN Brain Science Institute in Wako-shi, Japan.

I obtained my PhD degree in electrical engineering at  the Swiss Polytechnical Institute of Technology (ETH) in Zurich in December 2005.  My thesis advisor was Prof. Hans-Andrea Loeliger.

I was a teaching and research assistant at the Signal and Information Processing Laboratory (ISI) of the Department of Information Technology and Electrical Engineering at ETH Zurich from 2000 to 2005.

I received the engineering physics degree from the University of Ghent in 2000. From 1999 to 2000, I was an exchange student at ETH. I did my master's thesis at the Institute of Neuroinformatics in Zurich.

I was a visiting researcher at the MIT Media Lab (Physics and Media Group) in Fall 2003 and the University of Ghent (Digital Communications Research Group) in January 2004.

I was an intern at the Mitsubishi Electric Research Lab (Cambridge, MA) in Spring 2004 under supervision of Dr. Jonathan Yedidia.

Research Interests

• Information theory and its applications in communications, signal processing and machine learning
• Error correcting codes
• Digital signal processing in communications, biomedical applications, wearable computing systems and other fields
• Graphical models ("factor graphs") for coding and signal processing
• Implementation of signal processing algorithms in analog electrical circuits
• Theoretical neuroscience (in particular, aspects related to information theory, coding, and signal processing)
• Quantum computation
• Machine learning (Monte Carlo methods, kernel machines, neural networks, statistical learning theory)
• Theoretical statistics (information geometry, higher-order asymptotic theory)

• Submitted Papers
• Recent Papers
• Recent Talks (besides paper presentations at conferences)
• Recently Attended Workshops (without talk)
• Tutorials
• PhD thesis
• Selected Older Papers
• Old Own Projects
• Teaching

Submitted Papers

• J. Dauwels,
  Improving and validating Cramér-Rao bounds through higher-order asymptotic estimation theory: a case study,
  submitted to 2006 IEEE Int. Symp. on Information Theory and its Applications (ISITA), accepted. for publication.

Recent Papers

• B. Vigoda, J. Dauwels, M. Frey, N. Gershenfeld, T. Koch, H.-A. Loeliger, and P. Merkli
  Synchronization of pseudo-random signals by forward-only message passing with application to electronic circuits,
   IEEE Trans. Inform. Theory, accepted for publication.
  PDF file, 252 KB.
   
• J. Dauwels, Sascha Korl, and H.-A. Loeliger,
  Particle methods as  message passing,
  Proceedings of 2006 IEEE Int. Symp. Information Theory
  PDF file, 84 KB.   
   
• J. Dauwels and Sascha Korl,
  A numerical method to compute Cramér-Rao-type bounds for challenging estimation problems,
   International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2006), accepted for publication. (Student Paper Contest Winner)
  PDF file, 68 KB.   
   
• T. Ott, J. Dauwels, and R. Stoop,
  Sequential clustering by loopy belief propagation,
  Proceedings of the European Conference on Circuit Theory and Design, 2005.
   
• J. Dauwels,
  Numerical computation of the capacity of continuous memoryless channels,
  Proceedings of the 26th Symposium on Information Theory in the BENELUX, Brussels, Belgium, May 19 -20, 2005, pp. 221-228.
  PDF file, 857 KB.   

• J. Dauwels, S. Korl, and H.-A. Loeliger,
  Expectation maximization for phase estimation,
  Proceedings of  the Eighth International Symposium on Communication Theory and Applications, 2005.
  PDF file, 146 KB.   

•  J. Dauwels, S. Korl, and H.-A. Loeliger,
  Steepest descent on factor graphs,
  Proceedings of the IEEE ITSOC Information Theory Workshop 2005 on Coding and Complexity.
  PDF file, 132 KB.

• J. Dauwels, S. Korl, and H.-A. Loeliger,
  Expectation maximization as message passing,
  Proceedings of IEEE Int. Symp. Information Theory, 2005.
  PDF file, 92 KB.
   
• J. Dauwels,
  Computing Bayesian Cramér-Rao bounds,
  Proceedings of  the  IEEE Int. Symp. Information Theory, 2005.
  PDF file, 120 KB.

• J. Dauwels, H.-A. Loeliger, P. Merkli, and M. Ostojic,
  On Markov structured summary propagation and LFSR synchronization,
  Proc. 42nd Allerton Conf. on Communication, Control, and Computing, (Allerton House, Monticello, Illinois), Sept. 29 - Oct. 1, 2004. (invited paper)
  PDF file, 196 KB.

Recent Talks (besides paper presentations at conferences)

• Factor graph-based inference: algorithms and bounds,
  Workshop on Machine Learning and Optimization, The Institute of Statistical Mathematics, Tokyo, Japan, August 16th, 2006.
   
• Computation of the capacity of continuous memoryless channels and the rate distortion function of continuous memoryless sources,
  2006 Hawaii, IEICE, and SITA Joint Conference on Information Theory, Nara, Japan, May 23-26, 2006.
   
• On applications of information geometry to signal processing, digital communications, and related areas,
   The 5th Workshop on Differential Geometry and Information Geometry, Nagoya University, Japan, February 17-18, 2006.
   
• On Information-geometric aspects of graphical models and kernel machines, NIPS Workshop, Whistler, Canada, December 9-10, 2005.
  PDF file, 207KB.
   
• On various applications of message passing on factor graphs, MIT (CSAIL/RLE/LIDS), Cambridge, MA, December 13, 2005.
  PDF file, 3.775KB.
   
• On Cramér-Rao-bound paradoxes (and how to circumvent them), University of Gent, Belgium, June 03, 2005.
   
• Phase estimation by EM and steepest descent,
  University of Gent, Belgium, May 24, 2005.
  University of Louvain-la-Neuve (UCL), Belgium, May 23, 2005.
  
  
• RIKEN Brain Science Institute, Saitama, Japan, Jan 06, 2005.
  Applications of graphical models in signal processing,
  PDF file, 4.290 KB.
  An efficient algorithm to compute Cramér-Rao bounds in graphical models,
  PDF file, 1.541 KB.
   
• An analog circuit that locks onto a pseudo-noise signal, Kanazawa Institute of Technology, Japan, December 16, 2004.

• Message Passing, Factor Graphs and Analog Circuits, School and Conference on Fundamental Aspects of Complexity, Abdus Salam International Center for Theoretical Physics, Trieste, Sept. 6-9,  2004.
  
  
• An analog circuit that locks onto a pseudo-noise signal, Workshop on Statistical Aspects of Electronic Systems, Lavin, Switzerland, October 28-30, 2004.
  
  
• Towards Quantum Algorithms for Inference, MediaLab, MIT, May 18, 2004.

• Turbo Signal Processing, University of Gent, Sept. 11, 2003.
  PPT file (in Dutch!),  4.431 KB.

• Loeliger's Universe, MediaLab, MIT, Dec. 4, 2003.

Recently Attended Workshops (without talk)

• RIKEN Brain Science Institute Summer Program: Dynamical States in the Brain, July 24 - August 4, 2006.

• Okinawa Computational Neuroscience Course, Okinawa, Japan, June 26-July 7, 2006.

• Information Geometry from the Perspective of Affine Differential Geometry, RIKEN, BSI, January 29-30, 2006.

• Machine Learning Summer School 2004,  Pascal Network, Berder Island,  France, Sept. 12-25,  2004.

• Quantum Systems for Information Technology Workshop, Flums, Switzerland, March  5-7, 2004.

• Avogadro-Scale Engineering: Form and Function, MIT, Cambridge, Nov. 18-19, 2003.

• Probability and Statistical Mechanics in Information Science, Centro di Ricerca Matematica Ennio De Giorgi, Pisa, Italy, June 3-July 20, 2003.
  

Tutorials

• Kernel machines (presented at ISI, 04/11/2004)
  PDF file, 2.265 KB.
• Posterior Cramér-Rao bounds for estimation in graphical models (presented at ISI, 31/03/2005)
  PDF file, 2.491 KB.

PhD Thesis

• On Graphical Models for Communications and Machine Learning: Algorithms, Bounds, and Analog Implementation, December 2005.

Selected Older Papers

• J. Dauwels and H.-A. Loeliger,
  Computation of information rates by particle methods,
  Proc. 2004 IEEE Int. Symp. Information Theory, Chicago, IL, USA, June 27 - July 2, 2004, p. 178.
  PDF file, 120 KB.
   

• J. Dauwels, H. Wymeersch, H.-A. Loeliger and M. Moeneclaey,
  Phase Estimation and Phase Ambiguity Resolution by Message Passing,
  Proc. 11th International Conference on Telecommunications and Networking, pp. 150-155, Fortaleza, Brazil, August 1-6, 2004.
  PDF file, 158 KB.
   

• J. Dauwels and H.-A. Loeliger,
  Phase estimation by message passing,
  Proc. 2004 IEEE Int. Conf. on Communications, June 20-24, Paris, France, pp. 523-527, 2004.
  PDF file, 152 KB.
   

• H.-A. Loeliger, J. Dauwels, V.M. Koch, and S. Korl,
  Signal processing with factor graphs: examples,
  Proc. First Int. Symp. on Control, Communications and Signal Processing, March 21-24, Hammamet, Tunisia, pp. 571-574, 2004. (invited paper)
  PDF file, 152 KB.

• J. Dauwels, H.-A. Loeliger, P. Merkli, and M. Ostojic,
  On structured-summary propagation, LFSR synchronization, and low-complexity trellis decoding,
  Proc. 41st Allerton Conf. on Communication, Control, and Computing, (Allerton House, Monticello, Illinois), Oct. 1-3, 2003, pp. 459-467. (invited paper)
  PDF file, 216 KB.

Old Own Projects

• Self-Supervised Learning of Hierarchies, Diploma Thesis, Institute of Neuroinformatics, ETH Zurich and University of Zurich, Sept. 2000.   

• Der Sprachspielbegriff in Wittgensteins ‘Über Gewissheit’, Hausarbeit im Fach Philosophie der FernUniversität Hagen, June 2001.
  PDF file, 297 KB.

Teaching

• Teaching assistant for Adaptive Filters and Neural Networks (Winter 2000, 2001 and 2002)
• Teaching assistant for Digital Signal Processing (Winter 2001)
• Teacher of Practical Signal Processing with DSPs (Summer 2001)
• Teaching assistant for Algebra, Codes and Signal Processing (Summer 2002)

Last modified: April 03, 2006

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