我国通胀持久性的区间转换分析及其政策启示

抗通胀是当前一个阶段我国经济面临的重要难题。本文通过非线性小波变换阀值去噪和双区间Markov转移模型的分析表明,无论高通胀区还是低通胀区,我国通货膨胀的持久性均在0.9以上,通胀率偏离预期后受到随机冲击所需的回复时间较长,通货膨胀的治理成本较高。为有效降低我国通胀的高持久性,提高央行货币政策制定的透明度和政策施行的信用度是首要解决的问题。     

Monetary policy and inflation in South Africa: A VECM augmented with foreign variables

We develop a structural cointegrated vector autoregressive (VAR) model with weakly exogenous foreign variables, known as an augmented VECM or VECX*, suitable for a small open economy like South Africa. This model is novel for South Africa in two ways: it is the first VECX* developed to analyse monetary policy and the first model that uses time‐varying trade weights to create the foreign series. We impose three significant long‐run relations (augmented purchasing power parity, uncovered interest parity and Fisher parity) to investigate the effect of a monetary policy shock on inflation. The results suggest the effective transmission of monetary policy.