China, Tsinghua Univ. Math Sci Professor Baoding Liu

1. 中国・清華大学との共同研究発表（要旨） 選択する 千葉大学とＪＳＰＳ北京研究連絡センターとの共同シンポジウム China, Tsinghua Univ. Math Sci ProfessorBaoding Liu 施設・建物・研究室の写真等 Japan, Chiba Univ. Math Info ProfessorMasami Yasuda ■Thema Uncertain Theory --- Studies in Fuzziness and Soft Computing ■Background and Aim of Research In about 1960 Lofti A.Zadeh introduced Fuzzy sets as a extension of the classical notion of sets. Afterwards many topics involving fuzzysets and approximated reasoning. Uncertain theory is a mathematical field related to the analysis of knowledge-based learning algorithms. Aim is to develop the theory for further expansion. ■Abstract ●The scientific study of probability is a modern development. Itoh calculus is well known in mathematical finance and physical phenomenon etc. But frequently it is talked about the probability of a random event in historically. We will consider a basic type of subjective uncertainty, and credibility theory by Liu. ●Considering both of Fuzziness and Randomness simultaneously, it is proposed a new notion "hybrid variable". In addition we consider an application to Mathematical Programming and Markov decision processes etc. 研究内容を示す代表的な写真または概念図等 ■One of published books Uncertainty Theory (2nd Edition), Baoding LiuSpringer-Verlag, Berlin, 2007 ■Contact Masami Yasuda ・ E-mail: yasuda@math.s.chiba-u.ac.jp Tel: +81-43-290-3662Fax: +81-43-290-3662 ｈｔｔｐ://www.math.s.chiba-u.ac.jp/~yasuda