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In this paper, we develop procedures to construct simultaneous confidence bands for   p  ˜   potentially infinite-dimensional parameters after model selection for general moment condition models where    p  ˜    is potentially much larger than the sample size of available data, n . This allows us to cover settings with functional response data where each of the    p  ˜    parameters is a function. The procedure is based on the construction of score functions that satisfy Neyman orthogonality condition approximately. The proposed simultaneous confidence bands rely on uniform central limit theorems for high-dimensional vectors (and not on Donsker arguments as we allow for    p  ˜   ≫  n   ). To construct the bands, we employ a multiplier bootstrap procedure which is computationally efficient as it only involves resampling the estimated score functions (and does not require resolving the high-dimensional optimization problems). We formally apply the general theory to inference on regression coefficient process in the distribution regression model with a logistic link, where two implementations are analyzed in detail. Simulations and an application to real data are provided to help illustrate the applicability of the results.

Uniformly valid post-regularization confidence regions for many functional parameters in z-estimation framework