Xiaofei Deng (邓晓飞),Ph.D

An image of XiaofeiI obtained my PhD in the Dept of Computer Science at the University of Regina. My supervisor is Dr. Yiyu Yao.

My research interests include three-way decisions, decision-theoretic rough sets and Granular Computing.

For more details, please check Xiaofei's LinkedIn Profile, Xiaofei's Professional Website.


Dept of Computer Science

CW308.11, University of regina

3737 Wascana PKY

Regina, SK, S4S0A2, CA

Tel: +1 (306) 216-5281

E-mail: me@xiaofei.ca

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Journal papers

  1. Yao Y.Y., X.F. Deng , Quantitative rough sets based on subsethood measures, Information Science, Volume 267, 2014, pp. 306-322. (.pdf)
  2. X.F. Deng, Y.Y. Yao, Decision-theoretic three-way approximations of fuzzy sets, Information Science, Volume 279, pp. 702-715, 2014 (.pdf).
  3. X.F. Deng, Y.Y Yao, A multifaceted analysis of probabilistic three-way decisions, Fundamenta Informaticae, Volume 132, pp. 291-313, 2014. DOI: 10.3233/FI-2014-1045 (.pdf)
  4. Y. Y. Yao, Shu Wang, X.F. Deng, Constructing shadowed sets and three-way approximations of fuzzy sets, Information Science, Volumes 412-413, pp. 132-153, 2017. (free to download from publisher in 50 days, http://www.sciencedirect.com/science/article/pii/S0020025517307491)
  5. Y. Y. Yao, X.F. Deng, On desired properties of subsethood measures, Manuscript, 2017.

Conference papers

  1. Y.Y. Yao, X.F. Deng, Sequential three-way decisions with probabilistic rough sets, Proc. 10th IEEE International Conference on Cognitive Informatics and Cognitive Computing, 2011, pp. 120-125.( .pdf)
  2. X.F. Deng, Y.Y. Yao, An information-theoretic interpretation of thresholds in probabilistic rough sets, Proc 7th International Conference on Rough Sets and Knowledge Technology (T. Li, H.S. Nguyen, G. Wang, J. Grzymala-Busse, R. Janicki, Eds.), LNCS (LNAI) 7414, Springer, Heidelberg, 2012, pp. 369-378. (.pdf)
  3. X.F. Deng, Three-way decisions with artificial neural networks, the 26th Canadian Conference on Electrical and Computer Engineering (CCECE), Regina, SK, Canada, 2013, pp. 762-765.(.pdf)
  4. X.F. Deng, Y.Y. Yao, Mean-value-based decision-theoretic shadowed sets, 2013 Joint IFSA World Congress and NAFIPS Annual Meeting (IFSA/NAFIPS), Edmonton, Canada, 2013, pp. 1381-1387. (.pdf)
  5. J.L. Li, X.F. Deng, Y.Y. Yao, Multistage email spam filtering with three-way decisions. In: P. Lingras et al. (Eds.): RSKT 2013, LNAI 8171, pp. 313-324, 2013.(.pdf)
  6. X.F. Deng, Y.Y. Yao, J.T. Yao, On interpreting three-way decisions through two-way decisions. In T. Andreasen et al. (Eds.): ISMIS 2014, LNAI 8502, pp. 73-82, 2014. (.pdf)

Contributed Chapters

  1. Y.Y. Yao, X.F. Deng, A Granular Computing Paradigm for Concept Learning. In: S. Ramanna, L.C. Jain, & R.J. Howlett (Eds.): Emerging Paradigms in Machine Learning, SIST 13, pp. 307-326. (.pdf)

Chinese chapters

  1. 邓晓飞,王洪凯,姚一豫. 基于三支决策的自适应粗糙集近似. 《三支决策理论与应用》,南京大学出版社,南京,118-130, 2012.
    (X.F. Deng, H.K. Wang, Y.Y. Yao, Adaptive rough sets approximations based on three-way decisions (in Chinese), in: Jia, X.Y., Shang, L., Zhou, X.Z., Liang, J.Y., Miao, D.Q., Wang, G.Y., Li, T.R., Zhang, Y.P. (Eds.), Theory of Three-way Decisions and Applicatiion, Nanjing University Press, Nanjing, China, pp. 118-130, 2012.) (scan.pdf, draft.pdf)
  2. 邓晓飞,基于三支决策的模糊集近似,刘盾,李天瑞,苗夺谦,王国胤,粱吉业 (编著). 《三支决策与粒计算》,科学出版社,北京,196-213, 2013.
    (Deng, X. F., Approximations of fuzzy sets based on three-way decisions (in Chinese), in: Dun, L., Li, T. R., Miao, D. Q., Wang, G. Y., Liang, J. Y. (Eds.), Three-way Decisions and Granular Computing, Science Press, Beijing, China, pp 196-213, 2013) (.pdf)


CS830 Machine Learning

CS890CB Research Methods in CS

CS831 Knowledge Discovery in Databases

CS839 Web Intelligence and Electronic Commerce

CS836 Rough Sets and Applications

CS824 Information Retrieval (Visitor)


CS110 Marker (C++, Winter & Fall 2010)

CS210 Marker (C++ Plus Data Structures, Winter 2011)

CS210 Lab (Spring 2011)

CS215 Lab (Fall 2011, Winter 2012, Summer 2012, Fall 2012, Winter 2013, Summer 2013, Winter 2014, Summer 2014)

CS215 Marker(Fall 2013)

Volunteer of

Chinese Pavilion at Regina Mosaic Festival, 2010

7th Annual Univ of Regina Student Research Conference, 2012

Honorarium-Airport Welcome, Univ of Regina, 2014

Canada-Wide Science Fair, CWSF, Regina, 2017

One lab one family

One lab one family


  • 2012 Shen Kuo presentation, May 24th, 2012)
  • presentation: A granular computing paradim for concept learning (.pdf)

  • ICCI*CC 2011, Banff, AB, August 18-20, 2011

    Download photos: .pdf