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- W2408774189 abstract "Quantile regression (QR) is becoming increasingly popular due to its relevance in many scientific investigations. Linear and nonlinear QR models have been studied extensively, while recent research focuses on the single index quantile regression (SIQR) model. Compared to the single index mean regression (SIMR) problem, the fitting and the asymptotic theory of the SIQR model are more complicated due to the lack of closed form expressions for estimators of conditional quantiles. Consequently, the proposed methods are necessarily iterative. We propose a non-iterative estimation algorithm, and derive the asymptotic distribution of the proposed estimator under heteroscedasticity. For identifiability, we use a parametrization that sets the first coefficient to 1 instead of the typical condition which restricts the norm of the parametric component. This distinction is more than simply cosmetic as it affects, in a critical way, the correspondence between the estimator derived and the asymptotic theory." @default.
- W2408774189 created "2016-06-24" @default.
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- W2408774189 date "2016-09-01" @default.
- W2408774189 modified "2023-09-27" @default.
- W2408774189 title "Single index quantile regression for heteroscedastic data" @default.
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- W2408774189 doi "https://doi.org/10.1016/j.jmva.2016.05.010" @default.
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