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SUMMARY:Estimation in the Ising blockmodel - Quentin Berthet
DTSTART:20170125T140000Z
DTEND:20170125T150000Z
UID:TALK68916@talks.cam.ac.uk
CONTACT:Rachel Furner
DESCRIPTION:We consider the problem associated to recovering the block str
 ucture of an Ising model given independent observations on the binary hype
 rcube. This new model\, called the Ising blockmodel\, is a perturbation of
  the mean field approximation of the Ising model known as the Curie-Weiss 
 model: the sites are partitioned into two blocks of equal size and the int
 eraction between those of the same block is lower than across blocks\, to 
 account for more order within each block. We study probabilistic\, statist
 ical and computational aspects of this model in the high-dimensional case 
 when the number of sites may be (much) larger than the sample size.
LOCATION:MR15 Centre for Mathematical Sciences
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