Cosmic Data Fusion
Cavendish Astrophysics, Cavendish Laboratory, Madingley Road, Cambridge, England

We compare and combine cosmological parameter constraints from galaxy peculiar velocities, the CMB and supernovae in the parameter space $\Omega_m$, $h$ and $\sigma_8$. We also outline a method for combining data sets using weightings, or `Hyper-Parameters', and we compare the results of this approach with those of a conventional approach by applying it to subsets of a CMB data compilation.