Beschreibung:
It is known that no public goods mechanism can be Pareto efficient in Nash equilibrium, individually rational (IR), simple (using a one-dimensional message space), and dynamically stable. The Walker mechanism satisfies all but stability, while the Groves-Ledyard mechanism satisfies all but IR. Here we show that a hybrid between these two mechanisms maintains all of the properties of the Groves-Ledyard mechanism, but with fewer IR failures in expectation