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math.ST2022
Differentially private estimation in a class of directed network models
Lu Pan, Jianwei Hu, Peiyan Li
Although the theoretical properties in the model based on a differentially private bi-degree sequence have been derived, it is still lack of a unified theory for a general cl…
math.ST2020
Limiting laws and consistent estimation criteria for fixed and diverging number of spiked eigenvalues
Jianwei Hu, Jingfei Zhang, Jianhua Guo +1
In this paper, we study limiting laws and consistent estimation criteria for the extreme eigenvalues in a spiked covariance model of dimension . Firstly, for fixed , we propo…