Cui, Xia; Härdle, Wolfgang; Zhu, Lixing - 2009
Generalized single-index models are natural extensions of linear models and circumvent the so-called curse of … financial econometrics. Estimating and testing the model index coefficients beta is one of the most important objectives in the … statistical analysis. However, the commonly used assumption on the index coefficients, beta = 1, represents a non-regular problem …