Semiparametric single index versus fixed link function modelling
半参数单指标建模与固定连接函数建模的比较AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要明确以离散选择和 logit 等固定连接函数模型为背景,研究单指标模型设定检验,直接对应离散选择方向。
半参数单指标建模与固定连接函数建模的比较AI 解读 ↓
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Discrete choice models are frequently used in statistical and econometric practice. Standard models such as logit models are based on exact knowledge of the form of the link and linear index function. Semiparametric models avoid possible misspecification but often introduce a computational burden especially when optimization over nonparametric and parametric components are to be done iteratively. It is therefore interesting to decide between approaches. Here we propose a test of semiparametric versus parametric single index modelling. Our procedure allows the (linear) index of the semiparametric alternative to be different from that of the parametric hypothesis. The test is proved to be rate-optimal in the sense that it provides (rate) minimal distance between hypothesis and alternative for a given power function.