Goonhilly Sparklers

Flux monitoring of compact radio quasars has revealed dramatic radio-wave lensing events which challenge our understanding of the interstellar medium. However, the data on these events remain very sparse. Here we consider how the Goonhilly radio astronomical facility can make an impact on this problem by dedicating one or more dishes to flux monitoring for a period of one year. Such an experiment would be able to identify \sim6 new events and study them in detail.Comment: Appearing in the proceedings of "Astronomy with Megastructures" meeting in Crete, 201

Two problems in applying Ljung's 'projection algorithms' to the analysis of decentralized learning

We show that Ljung's projection algorthms, which we have recently been used by economists to establish convergence to rational expectations equilibrium, do not seem to apply to learning or forecasting behavior that one would normally call "decentralized." If the algorithm is defined in a way that allows individuals to have differing information. then Ljung's theorem does not apply. And even if a similar theorem could be proved that would allow for differing information, there remains a Lyapunov-like condition that is central to Ljung's projection method and which requires that individual beliefs be narrowly related to the equilibrium and to one another.Publicad