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arXiv 2202.08962q-fin.STq-fin.CPq-fin.RM
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利用机器学习和日内共性进行波动率预测

Volatility forecasting with machine learning and intraday commonality

Chao Zhang, Yihuang Zhang, Mihai Cucuringu, Zhongmin Qian

摘要:

我们应用机器学习模型来预测日内已实现波动率(RV),通过将股票数据汇集在一起来利用日内波动的共性,并通过引入市场波动的代理。神经网络在性能方面主导线性回归和基于树的模型,因为它们能够发现和建模变量之间复杂的潜在相互作用。当我们将训练模型应用于尚未包含在训练集中的新股时,我们的研究结果仍然稳健,从而为股票之间的普遍波动机制提供了新的经验证据。最后,我们提出了一种新的方法来预测前一天的RV使用过去的日内RV作为预测因子,并强调有趣的时间的一天的影响,帮助预测机制。结果表明,所提出的方法产生优越的样本外预测一组强大的传统基线,只依赖于过去的每日RV。

英文摘要:

We apply machine learning models to forecast intraday realized volatility (RV), by exploiting commonality in intraday volatility via pooling stock data together, and by incorporating a proxy for the market volatility. Neural networks dominate linear regressions and tree-based models in terms of performance, due to their ability to uncover and model complex latent interactions among variables. Our findings remain robust when we apply trained models to new stocks that have not been included in the training set, thus providing new empirical evidence for a universal volatility mechanism among stocks. Finally, we propose a new approach to forecasting one-day-ahead RVs using past intraday RVs as predictors, and highlight interesting time-of-day effects that aid the forecasting mechanism. The results demonstrate that the proposed methodology yields superior out-of-sample forecasts over a strong set of traditional baselines that only rely on past daily RVs.

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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