Dimensionality reduction via discretization

Huan Liu, Rudy Setiono

Research output: Contribution to journalArticle

27 Scopus citations

Abstract

The existence of numeric data and large numbers of records in a database present a challenging task in terms of explicit concepts extraction from the raw data. The paper introduces a method that reduces data vertically and horizontally, keeps the discriminating power of the original data, and paves the way for extracting concepts. The method is based on discretization (vertical reduction) and feature selection (horizontal reduction). The experimental results show that (a) the data can be effectively reduced by the proposed method; (b) the predictive accuracy of a classifier (C4.5) can be improved after data and dimensionality reduction; and (c) the classification rules learned are simpler.

Original languageEnglish (US)
Pages (from-to)67-72
Number of pages6
JournalKnowledge-Based Systems
Volume9
Issue number1
DOIs
StatePublished - Feb 1996
Externally publishedYes

Keywords

  • Dimensionality reduction
  • Discretization
  • Knowledge discovery

ASJC Scopus subject areas

  • Management Information Systems
  • Software
  • Information Systems and Management
  • Artificial Intelligence

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