On the Nonlinear Predictability of Stock Returns Using Financial and Economic Variables
利用金融与经济变量预测股票收益的非线性可预测性AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要明确研究标普500超额收益的递归预测及其与线性回归的比较。
利用金融与经济变量预测股票收益的非线性可预测性AI 解读 ↓
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In a recent article by Qi, neural networks trained by Bayesian regularization were used to predict excess returns on the S&P 500. The article concluded that the switching portfolio based on the recursive neural-network forecasts generates higher accumulated wealth with lower risks than that based on linear regression. Unfortunately, attempts to replicate the results were unsuccessful. Replicated results using the same software, approach and data detailed by Qi indicate that, in fact, the switching portfolio based on the recursive neural-network forecasts generates lower accumulated wealth with higher risks than that based on linear regression.