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arXiv 1606.01701stat.ME
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贝叶斯预测回归的正则化

Regularizing Bayesian Predictive Regressions

Guanhao Feng, Nicholas G. Polson

摘要:

我们表明,正则化贝叶斯预测回归提供了一个框架,事先敏感性分析。我们开发了一个程序,联合正则化的期望和方差-协方差阵使用一对收缩先验。我们的方法直接适用于向量自回归(VAR)和看似无关回归(SUR)。正则化路径提供先验灵敏度诊断。通过利用正则化惩罚和预测先验分布之间的二元性,我们重新解释了宏观金融研究的两个经典贝叶斯分析:股票溢价可预测性和预测宏观经济增长率。我们发现,存在合理的先验规范的可预测性超过标准普尔500指数收益率使用账面市值比,CAY(消费,财富,收入比),和国库券利率。我们使用市场时机策略评估预测,我们表明最佳正则化的解决方案优于买入并持有的方法。第二个实证应用涉及预测工业生产,通货膨胀和消费增长率,并证明了我们的方法的可行性。

英文摘要:

We show that regularizing Bayesian predictive regressions provides a framework for prior sensitivity analysis. We develop a procedure that jointly regularizes expectations and variance-covariance matrices using a pair of shrinkage priors. Our methodology applies directly to vector autoregressions (VAR) and seemingly unrelated regressions (SUR). The regularization path provides a prior sensitivity diagnostic. By exploiting a duality between regularization penalties and predictive prior distributions, we reinterpret two classic Bayesian analyses of macro-finance studies: equity premium predictability and forecasting macroeconomic growth rates. We find there exist plausible prior specifications for predictability in excess S&P 500 index returns using book-to-market ratios, CAY (consumption, wealth, income ratio), and T-bill rates. We evaluate the forecasts using a market-timing strategy, and we show the optimally regularized solution outperforms a buy-and-hold approach. A second empirical application involves forecasting industrial production, inflation, and consumption growth rates, and demonstrates the feasibility of our approach.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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