2022年11日27日，受永利yl23411邀请，加拿大里贾纳大学姚一豫教授在线上作了题为“Research Methodology based on Three-way Decision”的学术报告。此次报告由永利yl23411姚炳学教授主持，永利yl23411、西北师范大学、重庆邮件大学和临沂大学等4所高校的30多位师生参加了本次报告会。

　　姚一豫教授从哲学、方法论和应用等多个方面、多个视角和多个层次介绍了三支决策的基本思想，并指出了三只决策未来可进一步思考的课题。最后，姚教授和与会师生进行了30多分钟的交流、讨论。通过此次报告会，大家对三支决策的理论与应用有了更为深刻的认识，为从事这方面工作的师生指明了研究方向。

　　专家简介：Yiyu Yao is a professor of computer science with the Department of Computer Science, University of Regina, Canada. His research interests include three-way decision, granular computing, rough sets, formal concept analysis, information retrieval, data mining, and Web intelligence. He proposed a theory of three-way decision, a decision-theoretic rough set model, and a triarchic theory of granular computing. He has published over 500 papers.

　　Personal homepage: http://www2.cs.uregina.ca/~yyao/