in this paper, by using a model of the new keynesians, we investigated the role of the central bank's accountability to shocks that causes deviations in the performance of the monetary policymakers. for this purpose, we used quarterly data for 69: 1 to 93: 3, and estimated the basic equations of the new keynesians model. then, by calculating the optimal values for the central bank's a...

Combiningmultiple sources of information is a major and di cult task in the management of uncertainty Dempster s combination rule is one of the attractive approaches However many researchers have pointed out that the application domains of the rule are rather limited and it sometimes gives unexpected results In this paper we have further explored the nature of combination and achieved the follo...

where X and the Xi are members of some set S. The premises are X1, X2, . . . , Xn and the conclusion is X. We use such rule instances to specify an inductively defined subset A ⊆ S; intuitively, the rule (1) says that if you have X1, . . . , Xn ∈ A, then you must also take X ∈ A. Note that since an inductively defined set is defined by the rule instances, we are free to introduce metanotation i...