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The new Keynesian Phillips curve revisited

机译:重新介绍新的凯恩斯式菲利普斯曲线

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Several authors have questioned the evidence claimed by Gali and Gertler (1999) and Gali et al. (2001) that a hybrid version of the new Keynesian Phillips curve approximates European and US inflation dynamics quite well. We re-examine the evidence using the vector autoregressive framework and likelihood based methods, paying particular attention to the stationary and nonstationary, and possibly cointegrated, nature of variables involved. Our results show that the exact as well as the inexact form of the hybrid NKPC are clearly at odds with the European data. On the other hand, Gali and Gertler (1999) finding that the inexact hybrid NKPC is a "good first approximation" to the US inflation dynamics seems less at odds with the data. However, the assumption of the model that the stochastic term forms a sequence of innovations may be problematic as we find indication of autocorrelation in the estimated residuals. The exact form of the hybrid NKPC is firmly rejected by the US data.
机译:一些作者对Gali和Gertler(1999)以及Gali等人声称的证据提出了质疑。 (2001年),新凯恩斯-菲利普斯曲线的混合版本很好地逼近了欧洲和美国的通货膨胀动态。我们使用向量自回归框架和基于似然性的方法重新检查证据,尤其要注意涉及的变量的平稳性和非平稳性,并且可能是协整的。我们的结果表明,混合NKPC的精确形式和不精确形式显然与欧洲数据不一致。另一方面,Gali和Gertler(1999)发现,不精确的混合NKPC是对美国通货膨胀动态的“良好的第一近似”,似乎与数据的矛盾较少。然而,当我们发现估计残差中存在自相关的迹象时,假设随机项构成一系列创新的模型可能存在问题。美国数据坚决拒绝了混合型NKPC的确切形式。

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