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灵活函数形式下的贝叶斯效率分析：AIM 成本函数AI 解读

In this article, the authors describe the use of Gibbs sampling methods for drawing posterior inferences in a cost frontier model with an asymptotically ideal price aggregator, nonconstant returns to scale, and composed error. An empirical example illustrates the sensitivity of efficiency measures to assumptions made about the functional form of the frontier. The authors also examine the consequences of imposing regularity through parametric restrictions alone.

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基于椭圆模型混合的单位根假说决策理论分析AI 解读

This paper develops a formal decision theoretic approach to testing for a unit root in economic time series. The approach is empirically implemented by specifying a loss function based on predictive variances; models are chosen so as to minimize expected loss. In addition, the paper broadens the class of likelihood functions traditionally considered in the Bayesian unit root literature. Empirical results indicate that, while the posterior probability of trend-stationarity is…

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现值关系中的协整检验AI 解读

A Bayesian methodology is used to examine the bivariate time series properties of stock prices and dividends. The hypothesis that stock prices and dividends are cointegrated is emphasized. Exact small sample results are calculated using a specific parameterization for the bivariate model. Some commonly encountered problems in conventional cointegration tests based on asymptotic theory are thereby eliminated. We consider three hypotheses whose nonlinear form entails the need…

实际产出的跨期性质：贝叶斯分析AI 解读

This paper analyzes the univariate properties of real output and extends traditional analyzes in three ways: (1) a Bayesian approach is taken; (2) extensive cross-country comparisons are performed; and (3) a model is developed which allows for the possibility that real output may be fractionally integrated. In addition, standard comparisons between ARIMA and deterministic trend models are made. The class of fractionally integrated processes, while possessing certain…