Contact
Department
of Statistical Science,
UCL,
1-19 Torrington Place,
London, WC1E 6BT, United Kingdom
Room 129
Tel: (+44 20) 7679 1698
email-address: chrish (at) stats.ucl.ac.uk
Department of Statistical Science, Director of Studies
Previous places of work
University of Hamburg, Faculty of Mathematics, Center of Mathematical Stochastics (student
1986-1989, 1991-1993, assistant and PhD student/Doktorand
1993-1997, assistant, postdoc 1997-2001, 2003-2005)
ETH Zürich,
Faculty of Mathematics, Seminar for
Statistics (assistant, postdoc 2001-2003)
University of Dortmund, Faculty of Statistics
(student 1989-1991)
Bochumer Arbeitsgruppe
für Sozialen Konstruktivismus und Wirklichkeitsprüfung
(not really a place of work, but I had the honor to contribute some papers and
ideas to this wonderful website - German language only, sorry!)
Research
Areas of interest: multivariate analysis (especially clustering and
classification); robust statistics; model selection; simulation and bootstrap;
explorative and graphical data analysis; philosophical background
of statistics, probability and data analysis; didactics.
Current projects:
- A constructivist philosophy of statistics and data analysis
- Research-aim driven estimation of the number of clusters
- Robust mixture clustering
- Clustering mixed type nominal/ordinal/interval data
- Subjective decisions in statistics; design of loss functions
and dissimilarity measures
- Principles for cluster benchmarking and comparing clustering methods
- Various collaborations in applied data analysis in musicology
(similarity of melodies), systematic biology (species delimitation),
sociology (social stratification), web design, archaeology.
PhD project suggestions
Please contact me if you want to work on a PhD project, you
are interested in any of the ideas below, or of you have
research ideas that fit into my research interests. I do not normally have
personal funding available but there are a number of possibilities to get a
PhD project funded (although most of them are very competitive).
Current PhD students
- Daniel Meddings: Statistical inference in mixture models with
random effects
- Chien Ju Lin: A pattern-clustering method for longitudinal data -
heroin users receiving methadone
Former PhD students
- Pietro Coretto: The noise component in model-based clustering
- Elisabet Lund: Evidence-based crime investigation: a Bayesian approach
- Laura Anderlucci (formally PhD-student of University of Bologna):
Comparing Different Approaches for
Clustering Categorical Data
AG DANK:
I am chair of the Working Group Data Analysis and
Numerical Classification (AG DANK) of the German classification society.
Software
My add-on packages fpc (flexible procedures
for clustering), prabclus (clustering presence-absence data), smoothmest
(smoothing M-estimators for 1-d location) and trimkmeans (trimmed k-means)
for the R-statistical software are available from R home/CRAN. My software page
Papers and publications.
Teaching
2012/2013 term 2: STATG018/3005/M018 Factorial Experimentation.