نتایج جستجو برای: spatial membership function

تعداد نتایج: 1553412  

1995
Taner Bilgiç I. Burhan Türkşen

This chapter presents a review of various interpretations of the fuzzy membership function together with ways of obtaining a membership function. We emphasize that different interpretations of the membership function call for different elicitation methods. We try to make this distinction clear using techniques from measurement theory. 3.

Journal: :IJFSA 2015
Asit Dey Madhumangal Pal

This paper presents a method to construct more general fuzzy complex numbers and sets from ordinary fuzzy complex numbers by introduced the ordered sequences of membership functions. It is concluded that multifuzzy complex set is an extension of Buckley fuzzy complex set. Also, two types of multi-fuzzy complex numbers based on the forms z x iy = + and z re = θ are investigated. Multi-Fuzzy Comp...

2008
Zhongfeng Qin Xin Gao

In this paper, we consider fractional Liu process. First, the membership functions, expected values and variances of arithmetic and geometric fractional Liu process are given. Then we suppose that stock price follows geometric fractional Liu process and formulate fractional Liu’s stock model. Based on this model, European option pricing formulas are obtained.

Journal: :iranian journal of medical physics 0
fereshteh yousefi rizi master of science in biomedical engineering, department of biomedical systems & medical physics, tehran university of medical sciences alireza ahmadian associate professor in biomedical engineering, biomedical systems & medical physics dept., tehran university of medical sciences & research center for science and technology in medicine, tehran, iran. emad fatemizadeh assistant professor in biomedical engineering, electrical engineering dept., sharif university of technology, tehran, iran. javad alirezaie associate professor in biomedical engineering, electrical engineering dept., ryerson university, toronto, canada. nader rezaie assistant professor, pneumologist consultant, iran university of medical sciences, internal medicine group, tehran, iran.

introduction: virtual bronchoscopy is a reliable and efficient diagnostic method for primary symptoms of lung cancer. the segmentation of airways from ct images is a critical step for numerous virtual bronchoscopy applications. materials and methods: to overcome the limitations of the fuzzy connectedness method, the proposed technique, called fuzzy connectivity - fuzzy c-mean (fc-fcm), utilized...

Journal: :IEEE Trans. Fuzzy Systems 2002
Ildar Z. Batyrshin Okyay Kaynak Imre J. Rudas

A novel approach to fuzzy modeling based on the tuning of parametric conjunction operations is proposed. First, some novel methods for the construction of parametric generalized conjunction operations simpler than the known parametric classes of conjunctions are considered and discussed. Second, several examples of function approximation by fuzzy models, based on the tuning of the parameters of...

1998
Christer Carlsson Robert Fullér

We extend our earlier results [1; 2; 4] on the issue of weighted aggregations to linguistic importance weighted aggregations when both the importances (interpreted as benchmarks) and the ratings are given by symmetric triangular fuzzy numbers. We show that (unlike the case with finite term sets) small changes in the membership functions of the weights can cause only small variations in the (cri...

Journal: :international journal of geo science and environmental planning 0
amir akram associate professor of geomorphology department, kharazmi university, iran, tehran nazila yaghoob nejad asl phd student of geomorphologic hazards, university of mohaghegh ardabili, ardabil ebrahim beheshti javid phd student of geomorphologic hazards, university of mohaghegh ardabili, ardabil

soil and land information is vital for land use planning and infrastructure development. maps of soils landscapes are powerful tools to guide sustainable planning and natural resource management. fuzzy set theory has been widely used in soil science for soil classification and mapping, land evaluation, fuzzy soil geostatistics, soil quality indices. in fuzzy logic-based approaches, soil spatial...

2003
Pei Wang

This chapter first defines a recommendation process, which helps the user to select products from a large number of candidates according to personal preference. Though both conventional database and fuzzy database have been used for this task, none of the two provide a proper solution. A new approach is introduced, which is easy to design and maintain, and provides well justified results. The c...

2009
Feng Gao Haizhou Ai

As we all know, face age estimation task is not only challenging for computer, but even hard for human in some cases, however, coarse age classification such as classifying human face into baby, child, adult or elder people is much easier for human. In this paper, we try to dig out the potential age classification power of computer on faces from consumer images which are taken under various con...

2002
Takashi Mitsuishi Katsumi Wasaki Yasunari Shidama

In this paper C1, C2 are non empty sets. Let C be a non empty set. One can verify that every membership function of C is quasi total. Let C1, C2 be non empty sets. A membership function of C1, C2 is a membership function of [:C1, C2 :]. Let C1, C2 be non empty sets and let h be a membership function of C1, C2. A fuzzy relation of C1, C2, h is a FuzzySet of [:C1, C2 :], h. In the sequel f , g de...

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