Double Machine Learning for Time Series

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ID: 319757
2026
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Abstract
Abstract We adapt Double Machine Learning to macroeconomic time series by combining regularized nuisance estimation with Reverse Cross-Fitting. This deterministic scheme exploits time reversibility to use time-reversed auxiliary blocks and, unlike neighbor-deletion designs, avoids buffer blocks, thereby improving sample usage. We derive conditions for asymptotic validity and show in simulations that the estimator performs well in realistic finite samples across the designs considered, including cases with misspecification, heteroskedasticity, and state dependence. We also show that, in high dimensions, predictive tuning metrics do not minimize bias in the causal score. We therefore propose a calibration rule targeting a Goldilocks zone of tuning parameters delivering stable partialled-out signals and reduced small-sample bias. We extend the method to residualized Local Projections and apply it to estimate the dynamic effects of a rise in Tier 1 regulatory capital. The results illustrate the usefulness of the approach for macroeconomic time-series inference.
Reference Key
openalex_W7167477537 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Milos Ciganovic, Federico D'Amario, Massimiliano Tancioni
Journal econometrics journal
Year 2026
DOI
10.1093/ectj/utag019
URL
https://doi.org/10.1093/ectj/utag019
Keywords Keywords not found

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