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中金:XGBoost因子筛选与合成的指数增强应用
在量化投资领域,因子筛选和合成是构建有效选股组合的核心步骤。传统线性模型在处理因子非线性预测能力时存在局限,因此我们考虑是否可以借用机器学习模型(例如树模型、神经网络模型等)来挖掘因子非线性的预测能力。本报告重点探讨了使用树模型来 ...
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