2022
DOI: 10.1093/jjfinec/nbac020
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A Machine Learning Approach to Volatility Forecasting

Abstract: We inspect how accurate machine learning (ML) is at forecasting realized variance of the Dow Jones Industrial Average index constituents. We compare several ML algorithms, including regularization, regression trees, and neural networks, to multiple heterogeneous autoregressive (HAR) models. ML is implemented with minimal hyperparameter tuning. In spite of this, ML is competitive and beats the HAR lineage, even when the only predictors are the daily, weekly, and monthly lags of realized variance. The forecast g… Show more

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Cited by 52 publications
(23 citation statements)
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“…We also investigate if an EMS could be developed in order to deliver more interesting results than the usual robust strategy, which does not seek to maximize profits but to make sure H 2 is delivered. Machine learning has shown its ability to take advantage of both volatile and exogenous information [4,5], the kind of which is increasingly common for energy markets and for the behaviour of small systems.…”
Section: Contextmentioning
confidence: 99%
“…We also investigate if an EMS could be developed in order to deliver more interesting results than the usual robust strategy, which does not seek to maximize profits but to make sure H 2 is delivered. Machine learning has shown its ability to take advantage of both volatile and exogenous information [4,5], the kind of which is increasingly common for energy markets and for the behaviour of small systems.…”
Section: Contextmentioning
confidence: 99%
“…We also investigate if an EMS could be developed in order to deliver more interesting results than the usual robust strategy, which does not seek to maximize profits but to ensure that H 2 is delivered. Machine learning has shown its ability to take advantage of both volatile and exogenous information [6,7], the kind of which is increasingly common for energy markets and for the behavior of small systems.…”
Section: Contextmentioning
confidence: 99%
“…In addition, traditional machine learning has been viewed as a mainstay of volatility prediction, and its stable ability to fit with high accuracy cannot be ignored. Christensen, Siggaard, and Veliyev make a compelling case that multiple machine learning algorithms, including regularization and regression trees, have a more pronounced long-term memory advantage over heteroskedastic autoregressions (HARs) in volatility forecasting [8]. Wang and Guo went a step further by integrating multiple machine learning methods and proposed the DWT-ARIMA-GSXGB hybrid model [9].…”
Section: Introductionmentioning
confidence: 99%