no code implementations • 23 Feb 2025 • Jiashun Jin, Jingming Wang
The degree-corrected block model (DCBM), latent space model (LSM), and $\beta$-model are all popular network models.
1 code implementation • 16 Mar 2024 • Jiashun Jin, Zheng Tracy Ke, Gabriel Moryoussef, Jiajun Tang, Jingming Wang
Vertex hunting is the problem of estimating the $K$ vertices of the simplex.
1 code implementation • 1 Jan 2024 • Zheng Tracy Ke, Pengsheng Ji, Jiashun Jin, Wanshan Li
In particular, we propose a new statistical model for ranking the citation impacts of $11$ topics, and we also build a cross-topic citation graph to illustrate how research results on different topics spread to one another.
1 code implementation • 8 Jun 2023 • Dieyi Chen, Jiashun Jin, Zheng Tracy Ke
We also find that IF-PCA is quite competitive, which slightly outperforms Seurat and SC3 over the $8$ single-cell data sets.
no code implementations • 9 Mar 2023 • Jiashun Jin, Zheng Tracy Ke, Paxton Turner, Anru R. Zhang
Using a degree-corrected block model (DCBM), we establish phase transitions of this testing problem concerning the size of the small community and the edge densities in small and large communities.
no code implementations • NeurIPS 2021 • Jiashun Jin, Tracy Ke, Jiajun Liang
In a broad Degree-Corrected Mixed-Membership (DCMM) setting, we test whether a non-uniform hypergraph has only one community or has multiple communities.
no code implementations • 14 Nov 2018 • Jiashun Jin, Zheng Tracy Ke, Shengming Luo
It accommodates severe degree heterogeneity and is adaptive to different levels of sparsity, but its performance for networks with weak signals is unclear.
no code implementations • 24 Feb 2015 • Jiashun Jin, Zheng Tracy Ke, Wanjie Wang
In the two-dimensional phase space calibrating the rarity and strengths of useful features, we find the precise demarcation for the Region of Impossibility and Region of Possibility.
no code implementations • 21 Dec 2012 • Yingying Fan, Jiashun Jin, Zhigang Yao
We propose a two-stage classification method where we first select features by the method of Innovated Thresholding (IT), and then use the retained features and Fisher's LDA for classification.
no code implementations • 29 Apr 2012 • Jiashun Jin, Cun-Hui Zhang, Qi Zhang
Compared to m-variate brute-forth screening that has a computational cost of p^m, the GS only has a computational cost of p (up to some multi-log(p) factors) in screening.