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Classical and restricted impulse control for the exchange rate under a stochastic trend model

机译:随机趋势模型下汇率的经典和受限脉冲控制

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Building on Cadenillas and Zapatero (2000) and Bertola et al. (2016) we consider the problem faced by a Central Bank to optimally control the exchange rate, whereby the control is composed of a direct impulse control intervention and an indirect, continuously acting intervention given by the control of the domestic interest rate. Similarly to Cadenillas and Zapatero (2000) and Bertola et al. (2016) we formulate the problem as a mixed classical-impulse control problem and the approach is based on a quasi-variational inequality by considering a specific class of the optimal value functions and controls. As in Bertola et al. (2016), but differently from Cadenillas and Zapatero (2000), we consider a finite horizon that makes the problem time inhomogeneous and we do not have to impose a smooth fit condition so that a fully analytical solution is possible. With respect to Bertola et al. (2016) we generalize the problem by letting, more realistically, the drift in the dynamics of the exchange rate to be time varying or even unobservable so that it has to be filter-estimated from observable data. Numerical illustrations are presented as well. (C) 2018 Elsevier B.V. All rights reserved.
机译:建立在Cadenillas和Zapatero(2000)和Bertola等人的文章上。 (2016年),我们考虑了中央银行在最优控制汇率方面面临的问题,该控制由直接冲动控制干预和由国内利率控制提供的间接,持续性干预组成。与Cadenillas和Zapatero(2000)和Bertola等类似。 (2016年),我们将该问题表述为混合经典脉冲控制问题,并且该方法基于准变分不等式,考虑了特定类别的最优值函数和控制。如在Bertola等人中。 (2016年),但与Cadenillas和Zapatero(2000年)不同,我们考虑了使问题时间不均匀的有限范围,并且我们不必施加光滑的拟合条件,因此可以进行完全分析。关于贝尔托拉等。 (2016年),我们通过更现实地让汇率动态变化随时间变化甚至是无法观察到来概括该问题,因此必须根据可观察到的数据对其进行过滤估计。还提供了数字插图。 (C)2018 Elsevier B.V.保留所有权利。

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