This paper shows that belief?driven economic fluctuations are a general feature of many determinate macroeconomic models. In environments with hidden state variables, forecast?model misspecification can break the link between indeterminacy and sunspots by establishing existence “statistical sunspots” in models have unique rational expectations equilibrium. To form expectations, agents regress o...

controlling a system with minimum information and regardless of dynamic equations which dominate systems is the aim of intelligent control. one of the common approaches for process control is applying shewhart's quality control charts. neuro-fuzzy networks, as one of the branches of artificial intelligence (ai), can play an effective role in the enforcement of process control's common...