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University of Cambridge >  Department of Engineering >  Signal Processing Group

A. M. Johansen

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Introduction

Mr Johansen has recently submitted a thesis entitled "Some Non-Standard Sequential Monte Carlo Methods and Their Applications" and, as of October 1st, 2006, will be commencing work as a research assistant in the Statistics Group within the Department of Mathematics of the University of Bristol.

Contact details

  • E-mail: amj26 --at-- eng.cam.ac.uk
  • Department Address: University of Cambridge, Department of Engineering, Trumpington Street, Cambridge CB2 1PZ
  • Telephone: +44 1223 3 32754
  • Mobile telephone: +44 7989 513544
  • Fax: +44 1223 3 32662

Research

Current interests include Monte Carlo methodology, particularly sequential methods. Ongoing projects include:
  • Auxiliary variable SMC methods
  • Marginal maximum likelihood parameter estimation
  • Rare event simulation and probability estimation
Recent work includes:
  • Sequential Monte Carlo samplers for rare events., with P. Del Moral and A. Doucet
    In Proceedings of the 6th International Workshop on Rare Event Simulation, Bamberg, Germany, October 2006. To appear.
    [ bib | .djvu | .ps | .pdf ]
  • Maximum Likelihood Parameter Estimation for Latent Variable Models, with A. Doucet and M. Davy
    Presents a novel SMC method for maximum likelihood estimation in latent variable scenarios.
  • On the Convergence of the Particle PHD Filter, with S.S. Singh, A. Doucet and B. Vo
    Presents Lp convergence results and a Central limit theorem for the particle implementation of the PHD filter for random sets.

Publications

Publications to date are listed here. Some recent additions are listed below.

2006

  • A. M. Johansen, S. S. Singh, A. Doucet, and B.-N. Vo. Convergence of the SMC implementation of the PHD filter. Methodology and Computing in Applied Probability, 8(2):265-291, June 2006.
    [ bib | http ]
  • A. M. Johansen, A. Doucet, and M. Davy. Maximum likelihood parmeter estimation for maximum likelihood models using sequential Monte Carlo. In Proceedings of ICASSP, volume III, pages 640-643, May 2006.
    [ bib | .djvu | .ps | .pdf ]

    2005

  • Adam Michael Johansen, Sumeetpal Sidhu Singh, Arnaud Doucet, and Ba-Ngu Vo. Convergence of the SMC implementation of the PHD filter. Technical Report CUED/F-INFENG/TR-517, University of Cambridge, Department of Engineering, Cambridge University Engineering Department, Trumpington Street, Cambridge, CB2 1PZ, April 2005.
    [ bib | .djvu | .ps | .pdf ]

    Professional Activities

    I am an associate member of the Institute of Physics, and a student member of the Institute of Mathematical Statistics.

    Talks

    Talks include:

  • The Expectation-Maximisation Algorithm: An Introduction [ps]

    Teaching

    I'm involved in supervising and demonstrating certain undergraduate engineering courses. Summary notes produced to accompany some 1st and 2nd year courses are avaialble below.

    Demonstrating

  • Part 1B C++
  • Part 1B Matlab
  • Part II Data Analysis (Major Project)

    Supervising

  • Part 1A Electromagnetism [PDF Summary notes]
  • Part 1A Thermofluid Mechanics
  • Part 1B Electrical Engineering
  • Part 1B Mathematics (Including Vector Calculus [PDF Summary], Fourier Theory [PDF Introduction] [PDF Summary], Linear Algebra [PDF Summary] and Probability [PDF Summary])

    Collaborators

  • Mark Briers
  • Dr. Arnaud Doucet
  • Prof. William Fitzgerald
  • Edmund Jackson
  • Gareth Peters
  • Dr. Sumeetpal Singh Miscellaneous Useful Links