应学院邀请，西北农林科技大学杨斌副教授将来我院作学术报告。
报告题目：On three types of L-fuzzy covering-based rough sets
报告摘要：In this talk, we mainly introduce three types of L-fuzzy covering-based rough set models and study the axiomatic characterizations, matrix representations and interdependency of their rough approximation operators. Firstly, we propose three pairs of L-fuzzy covering-based rough approximation operators by constructing the notions such as \beta-subsethood degree and \beta-degree of intersection. And then, three pairs of the axiomatic characterizations about L-fuzzy \beta-covering-based rough approximation operators are investigated, respectively. In the meantime, we verify the independence of each axiom set. Thirdly, we give the matrix representations of three pairs of L-fuzzy \beta-covering-based rough approximation operators for efficient calculation of the lower and upper approximation operators through operations on matrices. Finally, the interdependency of three pairs of rough approximation operators based on L-fuzzy \beta-covering is explored in light of reducible elements and independent elements. Meanwhile, we present the necessary and sufficient conditions under which two L-fuzzy \beta-coverings can generate the same lower and upper rough approximation operations.
报告时间：2023年6月8日下午3:00
报告地点：教学9号楼C区101学术报告厅
邀 请 人：乔军胜 云亭教授
届时欢迎广大师生参与交流！
报告人简介：
杨斌，1989年9月生，甘肃天水人，博士，西北农林科技大学理学院副教授，博士生导师。现任中国逻辑学会非经典逻辑与计算专委会常务委员，中国人工智能学会粒计算与知识发现专业委员会委员，中国人工智能学会人工智能基础专业委员会通讯委员，中国系统工程学会会员，中国计算机学会会员，陕西省数学会青年工作委员会委员，教育部学位中心评审专家，SCI检索国际期刊《Journal of Intelligent and Fuzzy Systems》副主编(AE)，国际期刊《Journal of Advanced Studies in Topology》编委。主要研究方向为：智能决策方法、涉农金融大数据分析与建模、不完备数据优化方法。近年来，在《Fuzzy Sets and Systems》，《Information Sciences》，《Applied Soft Computing》,《Artificial Intelligence Review》, 《International Journal of Approximate Reasoning》等多个国际高水平期刊发表学术论文30余篇。现主持国家自然科学基金青年项目1项，中央高校基本科研业务经费3项，陕西省引进国内博士专项项目1项。
甘肃省数学与统计学基础学科研究中心
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