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Summary

„Rough sets and Data mining”

Vietnam national university in Hanoi,

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Main topics:

 Definition, principles and functionalities of

data mining systems

 Rough sets methodology to concept

approximation and data mining

 Boolean reasoning approach to problem

solving

 Data preprocessing and data cleaning

methods

 Association rules

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Boolean reasoning

methodology

 Monotone Boolean function  Implicant, prime implicant

 Searching for minimal prime implicants

(4)

Data preprocessing and data

cleaning

 Discretization methods  Data reduction methods  Missing values

 Outlier elimination

 Rough set methods for discretization

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Association rules

 Definition, possible applications

 Apriori search for frequent patterns

and association rules

 Modifications of apriori algorithms:

hash tree, Apriori-Tid, Apriori-Hybrid

 FP-tree method

 Relationship between association rule

(6)

Classification methods

 Instance-based classification

techniques

 Bayesian classifiers

 Decision tree methods  Decision rules methods

(7)

Discernibility measure

 Applications of discernibility measure

in

 Feature selection  Discretization

 Symbolic value grouping  Decision tree construction

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