Bayesian aggregation of two forecasts in the partial information   framework
  We generalize the results of \cite{SPU, SJPU} by showing how the Gaussian aggregator may be computed in a setting where parameter estimation is not required. We proceed to provide an explicit formula for a "one-shot" aggregation problem with two forecasters. 
Philip Ernst, Robin Pemantle, Ville Satopaa, and Lyle Ungar
stat.ME