Nonparametric Copula-Based Test for Conditional Independence with Applications to Granger Causality
基于Copula的非参数条件独立检验及其格兰杰因果应用
This article proposes a new nonparametric test for conditional independence that can directly be applied to test for Granger causality. Based on the comparison of copula densities, the test is easy to implement because it does not involve a weighting function in the test statistic, and it can be applied in general settings since there is no restriction on the dimension of the time series data. In fact, to apply the test, only a bandwidth is needed for the nonparametric…