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分类依据与纠错

AI 根据所提供的论文材料归类:摘要直接研究高维交互效应面板模型,并明确提供股票收益预测应用。

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代码、数据与补充材料

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关注这篇论文的作者
Tingting Cheng
Chaohua Dong
Jiti Gao
Oliver Linton

高维面板数据模型的 GMM 估计

研究问题
对于含不可观测交互因子、非参数因子载荷及不断增加的参数与矩条件的面板模型,如何联合估计并检验模型限制?
方法与思路
作者用筛方法结合 GMM 估计参数、因子与载荷函数,推导一致性和渐近分布,并构造过度识别及载荷函数设定检验。
材料陈述的贡献
摘要称,在所给识别条件下可一致估计各类未知量,并建立估计量和检验的大样本性质,另以股票收益预测展示应用。
阅读关注点
应核对因子归一化与识别条件、参数及矩条件增长速度、筛维度选择,以及联合估计误差如何进入渐近分布和检验。
阅读边界
仅依据所给 OpenAlex 摘要;所谓简单识别条件及数值表现未说明,股票预测应用不能据此证明普遍的样本外预测优势。

原文摘要

In this paper, we study a class of high dimensional moment restriction panel data models with interactive effects, where the factors are unobserved and these factor loadings are nonparametrically unknown smooth functions of individual characteristic variables. We allow the dimension of the parameter vector and the number of moment conditions to diverge with the sample size. This is a very general framework and is closely related to many existing linear and nonlinear panel data models. In order to estimate the unknown parameters, factors and factor loadings, we propose a sieve-based generalized method of moments estimation method and we show that under a set of simple identification conditions, all those unknown quantities can be consistently estimated. Further we establish asymptotic distributions of the proposed estimators. In addition, we propose tests for over-identification, specification of factor loading functions, and establish their large sample properties. Moreover, a number of simulation studies are conducted to examine the performance of the proposed estimators and test statistics in finite samples. An empirical example on stock return prediction is studied to demonstrate both the empirical relevance and the applicability of the proposed framework and corresponding estimation and testing methods.

笔记与分组
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