نتایج جستجو برای: fuzzy rule extraction

تعداد نتایج: 398183  

Journal: :CoRR 2013
Arindam Chaudhuri Kajal De Dipak Chatterjee

In India financial markets have existed for many years. A functionally accented, diverse, efficient and flexible financial system is vital to the national objective of creating a market-driven, productive and competitive economy. Today markets of varying maturity exist in equity, debt, commodities and foreign exchange. Of the 25 stock markets in the country, the most important is Bombay Stock E...

Journal: :iranian journal of fuzzy systems 2007
eghbal g. mansoori mansoor j. zolghadri seraj d. katebi

this paper considers the automatic design of fuzzy rule-basedclassification systems based on labeled data. the classification performance andinterpretability are of major importance in these systems. in this paper, weutilize the distribution of training patterns in decision subspace of each fuzzyrule to improve its initially assigned certainty grade (i.e. rule weight). ourapproach uses a punish...

Amirhossein Amiri Azam Goodarzi Farhad Mehmanpazir Shahrokh Asadi Shervin Asadzadeh

The stock market has always been an attractive area for researchers since no method has been found yet to predict the stock price behavior precisely. Due to its high rate of uncertainty and volatility, it carries a higher risk than any other investment area, thus the stock price behavior is difficult to simulation. This paper presents a “data mining-based evolutionary fuzzy expert system” (DEFE...

2012
Prasan Pitiranggon Nunthika Benjathepanun Somsri Banditvilai Veera Boonjing

Our study proposes an alternative method in building Fuzzy Rule-Based System (FRB) from Support Vector Machine (SVM). The first set of fuzzy IF-THEN rules is obtained through an equivalence of the SVM decision network and the zero-ordered Sugeno FRB type of the Adaptive Network Fuzzy Inference System (ANFIS). The second set of rules is generated by combining the first set based on strength of f...

1999
Yeung Yam Vladik Kreinovich Hung T. Nguyen

Sparse rule base and interpolation have been proposed as possible solution to alleviate the geometric complexity problem of large fuzzy set. So far, however, there's no formal method available to extract sparse rule base. This paper combines the recently introduced Cartesian representation of membership functions and a mountain method-based clustering technique for extraction. A case study is i...

2000
Yeung Yam Vladik Kreinovich Hung T. Nguyen

Sparse rule base and interpolation have been proposed as possible solution to alleviate the geometric complexity problem of large fuzzy set. So far, however, there's no formal method available to extract sparse rule base. This paper combines the recently introduced Cartesian representation of membership functions and a mountain method-based clustering technique for extraction. A case study is i...

2005
Amal Elmzabi Mostafa Bellafkih Mohammed Ramdani

The Chiu’s method which generates a Takagi-Sugeno Fuzzy Inference System (FIS) is a method of fuzzy rules extraction. The rules output is a linear function of inputs. In addition, these rules are not explicit for the expert. In this paper, we develop a method which generates Mamdani FIS, where the rules output is fuzzy. The method proceeds in two steps: first, it uses the subtractive clustering...

2006
Guy Danon Mark Last Abraham Kandel

In this paper we present an algorithm for extracting fuzzy association rules between weighted keyphrases in collections of text documents. First, we discuss some classical approaches to association rule extraction and then we show the fuzzy association rules algorithm. The proposed method integrates the fuzzy set concept and the apriori algorithm. The algorithm emphasizes the distinction betwee...

2013
M. Nooshyar H. Shayeghi A. Talebi

This paper presents a new improved from particle swarm optimization to tune optimal rule-base of a Fuzzy Proportional Integral Differential (FPID) which leads to damp low frequency oscillation following disturbances in power systems, while called Particle Swarm Optimization with Time Variant Acceleration Coefficient (PSO-TVAC). Thus, extraction of an appropriate set of rules or selection of an ...

2015
Shahaf Duenyas Michael Margaliot

Support vector machines (SVMs) proved to be highly efficient computational tools in various classification tasks. However, SVMs are nonlinear classifiers and the knowledge learned by an SVM is encoded in a long list of parameter values, making it difficult to comprehend what the SVM is actually computing. We show that certain types of SVMs are mathematically equivalent to a specific fuzzy–rule ...

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