OxTalks will soon move to the new Halo platform and will become 'Oxford Events.' There will be a need for an OxTalks freeze. This was previously planned for Friday 14th November – a new date will be shared as soon as it is available (full details will be available on the Staff Gateway).
In the meantime, the OxTalks site will remain active and events will continue to be published.
If staff have any questions about the Oxford Events launch, please contact halo@digital.ox.ac.uk
We consider a regression model where the coefficients vary across unknown groups. The groups are determined by an unknown partition of the covariate space, and the elements of the partition are in the form of unions of contiguous axis-aligned hyperrectangles. Such a structure allows us to develop a new estimation procedure based on the regression tree algorithm that consistently recovers the unknown group structure and the group-specific coefficients. Moreover, if the number of groups is small, the procedure has the oracle property.
