no code implementations • 12 Mar 2024 • Zeyu Li, Kangxiang Qin, Yong He, Wang Zhou, Xinsheng Zhang
In the first step, we integrate the shared subspace information across multiple studies by a proposed method named as Grassmannian barycenter, instead of directly performing PCA on the pooled dataset.
1 code implementation • 20 Apr 2020 • Yong He, PengFei Liu, Xinsheng Zhang, Wang Zhou
We construct a Median-of-Means (MOM) estimator for the centered log-ratio covariance matrix and propose a thresholding procedure that is adaptive to the variability of individual entries.
Methodology
no code implementations • 23 Mar 2020 • Long Yu, Yong He, Xin-bing Kong, Xinsheng Zhang
In this study, we propose a projection estimation method for large-dimensional matrix factor models with cross-sectionally spiked eigenvalues.
Methodology
1 code implementation • 14 Aug 2019 • Yong He, Xinbing Kong, Long Yu, Xinsheng Zhang
Large-dimensional factor model has drawn much attention in the big-data era, in order to reduce the dimensionality and extract underlying features using a few latent common factors.
Methodology
no code implementations • 3 Apr 2019 • Zhengping Che, Guangyu Li, Tracy Li, Bo Jiang, Xuefeng Shi, Xinsheng Zhang, Ying Lu, Guobin Wu, Yan Liu, Jieping Ye
Driving datasets accelerate the development of intelligent driving and related computer vision technologies, while substantial and detailed annotations serve as fuels and powers to boost the efficacy of such datasets to improve learning-based models.
no code implementations • 11 Feb 2015 • Cheng Zhou, Fang Han, Xinsheng Zhang, Han Liu
Theoretically, we develop a theory for testing the equality of U-statistic based correlation matrices.