This paper is a purely mathematical one dealing with a common possible foundation of Fuzzy Set Theory and Rough Set Theory.It begins with a generalization of Obtulowicz's paper,rough sets and Heyting algebra value...This paper is a purely mathematical one dealing with a common possible foundation of Fuzzy Set Theory and Rough Set Theory.It begins with a generalization of Obtulowicz's paper,rough sets and Heyting algebra valued sets,published in Bull.Polish Acad Sc.(math),198.In this paper Obtulowicz proposes a special subcategory展开更多
This paper carried on a preliminary study on pigment composition of lilies of different colors by means of specific color reactions and UV-visible spectra. The results showed that the colors of lilies were usually cau...This paper carried on a preliminary study on pigment composition of lilies of different colors by means of specific color reactions and UV-visible spectra. The results showed that the colors of lilies were usually caused by the combined action of several pigments; yellow and orange lilies mainly contained the flavonoids and carotenoids; pink lilies mainly contained fiavonoids and anthocyanins, and white lilies contained small amount of flavonoids.展开更多
With the development of large scale text processing, the dimension of text feature space has become larger and larger, which has added a lot of difficulties to natural language processing. How to reduce the dimension...With the development of large scale text processing, the dimension of text feature space has become larger and larger, which has added a lot of difficulties to natural language processing. How to reduce the dimension has become a practical problem in the field. Here we present two clustering methods, i.e. concept association and concept abstract, to achieve the goal. The first refers to the keyword clustering based on the co occurrence of展开更多
文摘This paper is a purely mathematical one dealing with a common possible foundation of Fuzzy Set Theory and Rough Set Theory.It begins with a generalization of Obtulowicz's paper,rough sets and Heyting algebra valued sets,published in Bull.Polish Acad Sc.(math),198.In this paper Obtulowicz proposes a special subcategory
文摘This paper carried on a preliminary study on pigment composition of lilies of different colors by means of specific color reactions and UV-visible spectra. The results showed that the colors of lilies were usually caused by the combined action of several pigments; yellow and orange lilies mainly contained the flavonoids and carotenoids; pink lilies mainly contained fiavonoids and anthocyanins, and white lilies contained small amount of flavonoids.
文摘With the development of large scale text processing, the dimension of text feature space has become larger and larger, which has added a lot of difficulties to natural language processing. How to reduce the dimension has become a practical problem in the field. Here we present two clustering methods, i.e. concept association and concept abstract, to achieve the goal. The first refers to the keyword clustering based on the co occurrence of
