Thompson Rivers University

Qinglin (Roger) Yu

Name: Dr. Qinglin (Roger) Yu
Position: Full Professor
Phone: 250-371-5552


Homepage URL:


Read; Travel; badminton; down-hill ski; hunting

Research Interests

Graph Theory, Discrete Optimization, Data Science and Mathematical Modeling


PhD, 1991; Major: Discrete Math, Simon Fraser University, Canada

MSc, 1985; Major: Operations Research, Shandong University, China


Selected Publications (2012-2020)
Due to limit of space (only 4000 characters allowed). Selected recent publications are listed below. For the complete list of publications from 2004 to present (downable pdf files), please go to link

[1] Z. Wu, X. Yang and Q. L. Yu, Factor-criticality of Cartesian products, Graphs and Combin., Vol. 28, No. 5 (2012), 723-736.
[2] Y. Duan, H. Lu and Q. L. Yu, L-factors and adjacent vertex-distinguishing edge-weighting, East Asia J Applied Math., Vol. 2, No. 2 (2012), 83-93.
[3] H. Lu, Y. Wu, Y. Lin, Q. L. Yu, C. Balbuena, X. Marcote, On superconnectivity of (4,g cages: the case of odd g, Graphs and Combin., 29 (2013), no. 1, 105-119.
[4] Y. Zhang, Q. L. Yu and G. Liu, Edge disjoint Hamilton cycles in intersection graphs of bases of matroids, Utilitas Math., 90 (2013), 327-334.
[5] H. Lu, G. L. Wang and Q. L. Yu, On the existence of general factors in regular graphs, SIAM J. Discrete Math. Vol. 27, No. 4 (2013), 1862-1869.
[6] T. Wang, Z. Wu and Q. L. Yu, 2-tough graphs and f-factors with given properties, Utilitas Math., 90 (2013), 219-237.
[7] Y. H. Duan, T. Wang, B. G. Xu and Q. L. Yu, On some properties of cages, Ars Combin., 108 (2013) 201-208.
[8] Y. Zan, J. Wu, P. Li and Q. L. Yu, SICR rumor spreading model in complex networks: considering the self-resistance of networks for rumors, Physica A, 405 (2014) 159-170.
[9] Y. J. Wu and Q. L. Yu, Uniformly weighted star-factors of graphs, Ars Combinatorica, 113 (2014) 391-404.
[10] M. D. Plummer, T. Wang and Q. L. Yu, Matching extension and cyclic connectivity, Graphs and Combin., Vol. 30, No. 4 (2014) 1003-1011.
[11] Y. H. Duan and Q. L. Yu, Double-twist wheel is Tutte-polynomial unique, Acta Math. Scientia, Series A, (accepted).
[12] H. Lu and Q. Yu, Generalization of matching extensions in graphs (IV): Closure, Graphs and Combin. (accepted).
[13] X. Huan, H. Lu and Q. L. Yu, Threshold for matching-covered graphs, Journal of Engineering Mathematics, 31 (2014), no. 4, 622???632.
[14] Q. L. Yu, L. Wen, A. Jones, and C. Haight, Key Performance Indicators for Electricity Conservation in Open Pit Mining, Science J. of Applied Math. and Statistics, Vol. 4, No. 2 (2016) 81-87.
[15] H. Lu and Q. Yu, Generalization of matching extensions in graphs (IV): Closure, Graphs and Combin., Vol. 32 (2016), 2009-2018.
[16] H. Lu and Q. Yu, Binding Number, Toughness and General Extendability in Graphs, Discrete Mathematics and Theoretical Computer Science, Vol. 21, No. 3 (2019) #4723.
[17] R. Cao, Y. Ma, H. Li and Q. L. Yu, A study of status and trends of Data Science discipline based on SCOPUS, Computer and Digital Engineering, Vol. 47, No. 4, (2019), 737-742.
[18] J. Liang, D. Lou, Z. Qin and Q. L. Yu, A polynomial algorithm determining cyclic vertex connectivity of 4-regular graphs, J. Combinatorial Optimization, Vol. 1, (2019), 1-19.
[19] Yinghong Ma, Xiaoyu Zhu and Qinglin Yu, Clusters detection based leading eigenvector in signed networks, Physica A: Statistical Mechanics and its Applications, Vol. 523, No. 1, (2019), 1263-1275.
[20] Yinghong Ma, Jiaoyang He, Qinglin Yu, Social Popularity and Achievement: the Case of Table Tennis, Physica A: Statistical Mechanics and its Applications, Vol. 524, (2019), 235-245.
[21] Y. Guan, J. Lu, H. Li and Q. L. Yu, Measurement and Prediction of College Students' Academic Achievements Based on Comprehensive Evaluation Model, China Computer & Communication, 18 (2019), 1-3.
[22] H. Lu, M. Kano and Q. L. Yu, Characterizations of graphs G having all [1, k]-factors in kG, Discrete Math. 342 (2019) 111580.
[23] M. Kano, H. Lu and Q. L. Yu, Graph factors and isolated conditions in graphs, Electronic Journal of Combi. 26(4) (2019), #P4.33.
[24] Y. Ma, L. Song, Z. Ji, Q. Wang, and Q. Yu, Scholar???s career switch adhesive with research topics: an evidence from China, Physica A: Statistical Mechanics and its Applications, 557(1) (2020), 124959.

Employment History

Full Professor, Thompson Rivers University, Canada, 2001-present;
Chair of Graduate Program Committee for Data Science, TRU, 2016-present;
Director of Centre for Optimization and Data Science, TRU, 2012-present;
Coordinator of MSc Data Science, TRU, 2018-present;
Associate Professor, Thompson Rivers University, Canada, 1999-2001;
Adjunct Professor, Simon Fraser University, Canada, 1991-2006;
Senior Research Fellow, Center for Combinatorics, Nankai University, China, 2003-2009;
Adjunct Professor, Shandong University, China, 2009-2017.
Adjunct Professor, University of Newcastle, Australia, 2009-2013;
Assistant Professor, Thompson Rivers University (formerly UCC), Canada, 1991-1999;
Instructor, Simon Fraser University, Canada, 1991;
Lecturer, Shandong University, China, 1985-1986.


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