Results 141 to 150 of about 1,047,288 (209)

A Contribution to Decision Tree Construction Based on Rough Set Theory

open access: closed, 2004
In this paper, the algorithm of building a decision tree is introduced by comparing the information gain or entropy. The produced process of univariate decision tree is given as an example. According to rough sets theory, the method of constructing multivariate decision tree is discussed.
Xumin Liu, Houkuan Huang, Weixiang Xu
openalex   +3 more sources

A framework for a decision tree learning algorithm with rough set theory

open access: closed, 2015
In this paper, we improve the conventional decision tree learning algorithm using rough set theory. First, our approach gets the upper approximate for each class. Next, it generates the decision tree from each upper approximate. Each decision tree shows whether the data item is in this class or not. Our approach classifies the unlabeled data item using
Masaki Kurematsu   +2 more
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Assessment of the potential applicability of fuzzy set theory to accident progression event trees with phenomenological uncertainties

open access: closedReliability Engineering & System Safety, 1992
Abstract Expert opinion is frequently used in the risk analysis of nuclear power plant systems to assess, in particular, the probabilities of rare events. However, this procedure is always accompanied by imprecision and uncertainty that characterise the experts judgment. Since the fuzzy set theory provides a framework for dealing with such judgmental
Moon-Hyun Chun, Kwang-Il Ahn
openalex   +3 more sources

An Intelligent Stock-Selecting System Based on Decision Tree Combining Rough Sets Theory

open access: closed, 2013
This study presents a stock selective system by using hybrid models to look for sound financial companies that are really worth making investment in stock markets. The following are three main steps in this study: First, we utilize rough sets theory to sift out the core of the financial indicators affecting the ups and downs of a stock price.
Shou-Hsiung Cheng
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<title>Application of preprocessing filtering on Decision Tree C4.5 and rough set theory</title>

open access: closedSPIE Proceedings, 2001
This paper compares two artificial intelligence methods: the Decision Tree C4.5 and Rough Set Theory on the stock market data. The Decision Tree C4.5 is reviewed with the Rough Set Theory. An enhanced window application is developed to facilitate the pre-processing filtering by introducing the feature (attribute) transformations, which allows users to ...
Joseph C. C. Chan, Tsau Young Lin
openalex   +3 more sources

Construction of Decision Tree Based on Rough Sets Theory

Advanced Materials Research, 2012
In the process of constructing decision trees, the selecting criteria of classification attributes will directly affect the classification results. Here we presented the classification contribution function (CCF), a new concept based on rough sets theory, which is regarded as the criteria for choosing attributes in the core of attributes.
Lin Li Wu, Zhi Jun Lei
openaire   +2 more sources

A Transformation Tree Based on Extension Set Theory

open access: closedAnnals of Data Science
Xingsen Li   +3 more
openalex   +2 more sources

An Integration of Cloud Transform and Rough Set Theory to Induction of Decision Trees

Fundamenta Informaticae, 2009
Decision trees are one of the most popular data-mining techniques for knowledge discovery. Many approaches for induction of decision trees often deal with the continuous data and missing values in information systems. However, they do not perform well in real situations.
Da Ruan, Jing Song, Tianrui Li
openaire   +1 more source

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