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ROBUST OPTIMAL MONETARY POLICY IN A FORWARD- LOOKING MODEL WITH PARAMETER AND SHOCK UNCERTAINTY

机译:具有参数和冲击不确定性的前瞻性模型中的鲁棒最优货币政策

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摘要

This paper characterizes a robust optimal policy rule in a simple forward-looking model, when the policymaker faces uncertainty about model parameters and shock processes. We show that the robust optimal policy rule is likely to involve a stronger response of the interest rate to fluctuations in inflation and the output gap than is the case in the absence of uncertainty. Thus parameter uncertainty alone does not necessarily justify a small response of monetary policy to perturbations. However, uncertainty may amplify the degree of 'super-inertia' required by optimal monetary policy. We finally discuss the sensitivity of the results to alternative assumptions.
机译:当决策者面临模型参数和冲击过程的不确定性时,本文将在一个简单的前瞻性模型中描述稳健的最优政策规则。我们表明,与没有不确定性的情况相比,强有力的最优政策规则可能涉及利率对通货膨胀和产出缺口波动的更强响应。因此,仅凭参数不确定性并不一定能证明货币政策对微扰做出较小反应是合理的。但是,不确定性可能会放大最优货币政策所要求的“超惯性”程度。最后,我们讨论了结果对替代假设的敏感性。

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