Is there an optimal forecast combination?
是否存在最优的预测组合?AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要明确研究预测组合,并分别预测美国实际产出增长率与股票超额溢价。
是否存在最优的预测组合?AI 解读 ↓
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We consider several geometric approaches for combining forecasts in large samples—a simple eigenvector approach, a mean corrected eigenvector and trimmed eigenvector approach. We give conditions where geometric approach yields identical result as the regression approach. We also consider a mean and scale corrected simple average of all predictive models for finite sample and give conditions where simple average is an optimal combination. Monte Carlos are conducted to compare the finite sample performance of these and some popular forecast combination and information combination methods and to shed light on the issues of “forecast combination” vs “information combination”. We also try to shed light on whether there exists an optimal forecast combination method by comparing various forecast combination methods to predict US real output growth rate and excess equity premium.