نتایج جستجو برای: fuzzy lr solution

تعداد نتایج: 557079  

Journal: :journal of linear and topological algebra (jlta) 0
r ezzati department of mathematics, karaj branch, islamic azad university, karaj, iran. a yousefzadeh department of mathematics, karaj branch, islamic azad university, karaj, iran.

in this paper, we propose the least-squares method for computing the positive solution of a m  n fully fuzzy linear system (ffls) of equations, where m > n, based on ka man's arithmetic operations on fuzzy numbers that introduced in [18]. first, we consider all elements of coecient matrix are non-negative or non-positive. also, we obtain 1-cut of the fuzzy number vector solution of the n...

Journal: :iranian journal of optimization 2010
andrej v. plotnikov tatyana a. komleva lilia i. plotnikova

in this article we consider the averaging method for differential inclusions with fuzzy right-hand side for the case when the limit of a method of an average does not exist.

1997
J. Lillis C. K. Cheng L. T. Pileggi D. F. Wong P. K. Coulman R. A. Haring G. L. Morrill

\Optimal wire sizing and buuer insertion for low power and a generalized delay model," in Proc. 17 problems are solved in the context of simultaneous device and wire sizing optimization for deep submicron designs. Experiments show that our LR-based optimization algorithm is very eeective and extremely eecient. Up to 16.5% delay reduction is observed when compared with previous work based on the...

Journal: :international journal of industrial mathematics 0
a. jafarian department of mathematics, urmia branch, islamic azad university, urmia, iran. s. measoomy nia department of mathematics, urmia branch, islamic azad university, urmia, iran.

this paper intends to offer a new iterative method based on arti cial neural networks for finding solution of a fuzzy equations system. our proposed fuzzi ed neural network is a ve-layer feedback neural network that corresponding connection weights to output layer are fuzzy numbers. this architecture of arti cial neural networks, can get a real input vector and calculates its corresponding fu...

2012
Wei Chen Cui-You Yao Yue Qiu

This paper deals with a portfolio selection problem based on the possibility theory under the assumption that the returns of assets are LR-type fuzzy numbers. A possibilistic portfolio model with transaction costs is proposed, in which the possibilistic mean value of the return is termed measure of investment return, and the possibilistic variance of the return is termed measure of investment r...

2013
Cláudio Rebelo de Sá Carlos Soares Arno J. Knobbe Paulo J. Azevedo Alípio Mário Jorge

Label Ranking (LR) problems, such as predicting rankings of financial analysts, are becoming increasingly important in data mining. While there has been a significant amount of work on the development of learning algorithms for LR in recent years, preprocessing methods for LR are still very scarce. However, some methods, like Naive Bayes for LR and APRIORI-LR, cannot deal with real-valued data ...

2014
Jianhui Chen Tianbao Yang Shenghuo Zhu

We propose a low-rank stochastic gradient descent (LR-SGD) method for solving a class of semidefinite programming (SDP) problems. LR-SGD has clear computational advantages over the standard SGD peers as its iterative projection step (a SDP problem) can be solved in an efficient manner. Specifically, LR-SGD constructs a low-rank stochastic gradient and computes an optimal solution to the project...

Journal: :international journal of industrial mathematics 2014
m. ganbari

a‎s we know, developing mathematical models and numerical procedures that would appropriately treat and solve systems of linear equations where some of the system's parameters are proposed as fuzzy numbers is very important in fuzzy set theory. for this reason, many researchers have used various numerical methods to solve fuzzy linear systems. in this paper, we define the concepts of midpoint a...

Journal: :Mathematical and Computer Modelling 2011
Ata Allah Taleizadeh Farnaz Barzinpour Hui-Ming Wee

Single-period problem (SPP) is a classical stochastic inventory model that has become very popular recently. In this research, we developed a SPP with fuzzy environment. The demand of each product is considered as LR-fuzzy variables (ranking fuzzy numbers based on the left and right deviation degrees), and multiple constraints (including service level, batch order, budget, space and upper limit...

1993
Hahn-Ming Lee Weng-Tang Wang

A b s t r a c t A neural network for classifcation problems with linguistic terms is proposed. A fuzzy input is represented as a LR-type fizzy set. A generalized pocket algorithm, called f izzy pocket algorithm, that utilizes .IR-type fuzzy sets operations and defuzziJication method is first applied to train a linear threshold unit ( LTU ). This LTU node will classrfj, as many fuzzy input insta...

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