JOINT ST ANDREWS/HIGHLAND RSS GROUP MEETING
SPEAKERS: Frank Critchley (Open University), Simon Wood (Bath)
DATE: WEDNESDAY 03/05/2006
TIME: 3pm
VENUE: Lecture Theatre D, Mathematical Institute, North Haugh, St Andrews
(for updates please go to:
http://www.mcs.st-and.ac.uk/StatsSeminars/index.shtml,
a map of the university can be found at:
http://www.st-andrews.ac.uk/map/map.pdf)
SCHEDULE:
3.00pm Frank Critchley (Open University)
"Principal Axis Analysis " (abstract is given below)
4.00pm: Tea (in the Staff Room)
4.30: Simon Wood (University of Bath):
"Calanus in the North Atlantic: a simple approach to fitting a complex
model."
The meeting will be followed at 6.30 p.m. by a 2-course meal at the
Doll's House Restaurant in Church Square, St Andrews. Those wishing to
come to the meal, please inform Peter Jupp, preferably by email
([log in to unmask]) before the end of Monday 1 May (updates on the
arrangement for the meal can also be found at:
http://www.mcs.st-and.ac.uk/StatsSeminars/index.shtml)
--------------------------------------------------------------------------------------------------------------------------------------------------------------
Principal Axis Analysis
(Frank Critchley(1), Ana Pires(2) and Conceição Amado(2); Open
University, UK(1) and IST, Lisbon(2))
Principal axis analysis rotates standardised principal components to
optimally detect subgroup structure, rotation being based on
preferred directions in the spherised data. As such, it is a
computationally efficient method of exploratory data analysis,
particularly well-suited to detecting mixtures of elliptically
contoured distributions. The ability of principal components itself
to perform as a cluster analysis method on some occasions, but not
others, is explained and illustrated. Links with a number of related
multivariate methods are explored. Examples are given throughout.
Further developments are briefly indicated. Overall, principal axis
analysis exemplifies the maxim: 'two decompositions are better than
one'.
--
***********************************************************************************
Dr Claus-D. Mayer | http://www.bioss.ac.uk
Biomathematics & Statistics Scotland | email: [log in to unmask]
Rowett Research Institute | Telephone: +44 (0) 1224 716652
Aberdeen AB21 9SB, Scotland, UK. | Fax: +44 (0) 1224 715349
***********************************************************************************
|