Semenova, Vira; Goldman, Matt; Chernozhukov, Victor; … - In: Quantitative economics : QE ; journal of the … 14 (2023) 2, pp. 471-510
a high‐dimensional parameter in both homogeneous cross‐sectional and unit‐heterogeneous dynamic panel data settings. In … dependent time series and panel data. This method "leaves out the neighbors" when fitting nuisance components, and we …‐dimensional. In heterogeneous panel data settings, we model the unobserved unit heterogeneity as a weakly sparse deviation from …