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一类指数模型的识别：拓扑方法AI 解读

Summary We establish nonparametric identification in a class of so-called index models by using a novel approach that relies on general topological results. Our proof strategy requires substantially weaker conditions on the functions and distributions characterising the model than those required by existing strategies; in particular, it does not require any large-support conditions on the regressors of our model. We apply the general identification result to additive random…

分离偏好与误差：二元面板数据模型AI 解读

In many stated choice experiments researchers observe the random variables V t , X t , and Y t = 1{ U + δ ⊤ X t + ε t < V t }, t ≤ T , where δ is an unknown parameter and U and ε t are unobservable random variables. We show that under weak assumptions the distributions of U and ε t and also the unknown parameter δ can be consistently estimated using a sieved maximum likelihood estimation procedure.