Comments on: High-dimensional simultaneous inference with the bootstrap

Lockhart, RA ; Samworth, Richard John (2017-12-01)


We congratulate the authors on their stimulating contribution to the burgeoning high-dimensional inference literature. The bootstrap offers such an attractive methodology in these settings, but it is well-known that its naive application in the context of shrinkage/superefficiency is fraught with danger (e.g. Samworth, 2003; Chatterjee and Lahiri, 2011). The authors show how these perils can be elegantly sidestepped by working with de-biased, or de-sparsified, versions of estimators.