Graph Theory, Combinatorics, Applied Statistics, Data Mining

Weak degeneracy of the square of planar graphs with given girth, joint work with M. Han and J. Ye, Applied Mathematics and Computation, 517 (2026) 129896. 

Ricci curvatures in random clustering graphs, joint work with F. Chung, M. Rawson, Z. Shen and N. Sieger, Journal of Combinatorics, 16 (2025), no. 4, 421-463.

A principal-weighted penalized regression model and its application in economic modeling, joint work with M. Sun, Journal of Applied Statistics, 2024, 1-18.

On the sizes of (k,l)-edge-maximal r-uniform hypergraphs, joint work with H.-J. Lai, X. Meng and Y. Tian, Discussiones Mathematicae Graph Theory 43(1) (2023) 179-194; MR4484585.

Graph r-hued colorings-A survey, joint work with Y. Chen, S. Fan, and H.-J. Lai,  Discrete Applied Mathematics, 321 (2022), 24–48; MR4446120.

Decomposition and r-hued coloring of K4(7)-minor free graphs, joint work with Y. Chen, S. Fan, H.-J. Lai and H. Song, 2020, Applied Mathematics and Computation, 384 (2020) 125206; MR4104836.

On r-hued colorings of graphs without short induced paths, joint work with H.-J. Lai and X. Lv, Discrete Mathematics, 342 (2019) 1904–1911; MR3937751.

Linear list r-hued coloring of sparse graphs, joint work with X. Hu, J. Kong, and H. Ma, 2018, Discrete Mathematics, Algorithms and Applications 10 (2018) 1850045; MR3834412.

On k‐maximal strength digraphs, joint work with J. Anderson, H.-J. Lai and X. Lin, Journal of Graph Theory, 84 (2017) 17-25; MR3581817.

On the lower bound of k-maximal digraphs, joint work with S. Fan, H.-J. Lai and X. Lin, Discrete Mathematics, 339 (2016) 2500-2510; MR3508762.

A new image digital watermarking algorithm based on SVD , joint work with S. Fan, (Chinese) Computer Simulation, 28(2011) 291-294, 341; ISSN: 1006-9348.