Robust Nonnested Testing and the Demand for Money
稳健非嵌套检验与货币需求AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要讨论动态非嵌套模型在序列相关和条件异方差下的检验,并应用于美国货币需求,直接对应宏观时间序列方法。
稳健非嵌套检验与货币需求AI 解读 ↓
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Nonnested hypothesis testing procedures recently have been extended to dynamic nonnested models. We propose robust tests that generalize the J test and the F test for nonnested dynamic models with unknown serial correlation and conditional heteroscedasticity in errors and regressors. We investigate the finite-sample properties of our test statistics and propose to use bootstrap methods or the fixed-b asymptotics developed by Kiefer and Vogelsang to improve the asymptotic approximation to the sampling distribution of the test statistics. We compare the semiparametric bootstrap and the fixed-b approaches with the standard normal or chi-squared approximations using Monte Carlo simulations and find that they give markedly superior approximations. We also present an application to U.S. money demand models, where consumption seems to be a better variable than income as a “scale” variable in the money demand function.