no code implementations • 2 May 2023 • Yiyuan She, Jianhui Shen, Adrian Barbu
Big-data applications often involve a vast number of observations and features, creating new challenges for variable selection and parameter estimation.
no code implementations • 17 Dec 2021 • Yiyuan She, Jiahui Shen, Chao Zhang
In this paper, new information-theoretical limits are presented to reveal the intrinsic cost of seeking for clusters, as well as the blessing from dimensionality in multivariate learning.
no code implementations • 16 Dec 2021 • Yiyuan She, Zhifeng Wang, Jiuwu Jin
Modern statistical applications often involve minimizing an objective function that may be nonsmooth and/or nonconvex.
no code implementations • 15 Dec 2021 • Yiyuan She, Zhifeng Wang, Jiahui Shen
Outliers widely occur in big-data applications and may severely affect statistical estimation and inference.
no code implementations • 11 Feb 2020 • Yangzi Guo, Yiyuan She, Adrian Barbu
The attractive fact that the network size keeps dropping throughout the iterations makes it suitable for the pruning of any untrained or pre-trained network.
no code implementations • 25 Sep 2019 • Yangzi Guo, Yiyuan She, Ying Nian Wu, Adrian Barbu
However, in non-vision sparse datasets, especially with many irrelevant features where a standard neural network would overfit, this might not be the case and there might be many non-equivalent local optima.
no code implementations • 30 Dec 2018 • Yiyuan She, Hoang Tran
In high-dimensional data analysis, regularization methods pursuing sparsity and/or low rank have received a lot of attention recently.
no code implementations • 8 Oct 2016 • Yiyuan She, Shao Tang, Qiaoya Zhang
This paper studies how to capture dependency graph structures from real data which may not be Gaussian.
no code implementations • 8 Oct 2016 • Yiyuan She, Shao Tang
This paper revisits the classic iterative proportional scaling (IPS) from a modern optimization perspective.
no code implementations • 12 Dec 2015 • Qiaoya Zhang, Yiyuan She
Principal Component Analysis (PCA) is a dimension reduction technique.
no code implementations • 17 Nov 2014 • Yiyuan She, Yuejia He, Shijie Li, Dapeng Wu
In particular, our method can pre-determine and remove unnecessary edges based on the joint graphical structure, referred to as JAG screening, and can decompose a large network into smaller subnetworks in a robust manner, referred to as JAG decomposition.
no code implementations • 17 Nov 2014 • Yiyuan She, Zhifeng Wang, He Jiang
We give the minimax lower bounds for strong and weak hierarchical variable selection and show that the proposed estimators enjoy sharp rate oracle inequalities.
no code implementations • 5 Oct 2014 • Yiyuan She, Yuejia He, Dapeng Wu
Large-scale recurrent networks have drawn increasing attention recently because of their capabilities in modeling a large variety of real-world phenomena and physical mechanisms.
no code implementations • 25 Mar 2014 • Yiyuan She
This paper studies simultaneous feature selection and extraction in supervised and unsupervised learning.
1 code implementation • IEEE Transactions on Pattern Analysis and Machine Intelligence 2017 • Adrian Barbu, Yiyuan She, Liangjing Ding, Gary Gramajo
Many computer vision and medical imaging problems are faced with learning from large-scale datasets, with millions of observations and features.
no code implementations • 28 Jul 2012 • Yiyuan She, Huanghuang Li, Jiangping Wang, Dapeng Wu
Recently, sparsity-based algorithms are proposed for super-resolution spectrum estimation.