This second session of the School of Statistics for Astrophysics is devoted to clustering and classification.
Grouping objects obtained from the astronomical observations into distinct categories has always been a necessity imposed by their vast diversity. This is the case for stars, galaxies, asteroids, supernova, active galactic nuclei, gamma-ray bursts and many others. This clustering by similarities (unsupervised classification) is a prerequisite to any physical modelisation, and (supervised) classification a requirement for observations and databases.
The objective of the School of Astrostatistics 2015 is to train astronomers to the use of a large range of statistical and algorithmic approaches of unsupervised and supervised classification, from the most basic to the state-of-the-art ones, including the spatial clustering, the clustering of variables and the graphical methods.
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