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Apologies for cross-posting Dear All, This is to remind you that our Avon Local RSS group is meeting on Thursday 15th May (5.00 - 6.00 pm) Tea and biscuits served at 4.30 pm at: University of Bath Room: 3 West 3.9 Bath, BA2 7AY (see map http://www.bath.ac.uk/maps/pdf/campusmap.pdf) The Theme of our meeting is: On mixture modelling with speakers Tony Robinson and M. Hurn The titles and abstracts of the talks can also be found at http://www.cmm.bristol.ac.uk/research/rss-users-group.shtml *************************************************************************** Titles and Abstracts *************************************************************************** Why is Mixture Modelling so Popular? by Tony Robinson (University of Bath) Abstract Over the last decade or so, interest in using mixtures of statistical models for all types of applications has risen rapidly from both the frequentist and Bayesian points of view. What is so appealing about such models? Are they always good news? Mainly through examples, I shall discuss the reasons for this interest and try to point out what you might gain and what you might lose from adopting a mixture modelling approach. *************************************************************************** Estimating redshift for a mixture of types of galaxy by Merrilee Hurn (University of Bath) Abstract The Sloan Digital Sky Survey (SDSS) is an extremely large astronomical survey conducted with the intention of mapping more than a quarter of the sky (http://www.sdss.org/). Among the data it is generating are spectroscopic and photometric measurements, both containing information about the redshift of galaxies. We consider a Bayesian mixture approach to providing uncertainty bounds associated with the underlying redshifts and the classifications of the galaxies. This is joint work with Peter Green and Fahima Al-Awadhi *************************************************************************** I am looking forward to seeing you all there. Best wishes Daphne Kounali