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Improving Estimation in Functional Linear Regression With Points of Impact: Insights Into Google AdWords

Liebl, Dominik ; Rameseder, Stefan ; Rust, Christoph


The functional linear regression model with points of impact (PoI) is a recent augmentation of the classical functional linear model with many practically important applications. In this article, however, we demonstrate that the existing data-driven procedure for estimating the parameters of this regression model can be very instable and inaccurate. The tendency to omit relevant PoI is a ...


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