A semi-supervised adaptive discriminative discretization method improving discrimination power of regularized naive Bayes

Research output: Journal PublicationArticlepeer-review

4 Citations (Scopus)

Abstract

Recently, many improved naive Bayes methods have been developed with enhanced discrimination capabilities. Among them, regularized naive Bayes (RNB) produces excellent performance by balancing the discrimination power and generalization capability. Data discretization is important in naive Bayes. By grouping similar values into one interval, the data distribution could be better estimated. However, existing methods including RNB often discretize the data into too few intervals, which may result in a significant information loss. To address this problem, we propose a semi-supervised adaptive discriminative discretization framework for naive Bayes, which could better estimate the data distribution by utilizing both labeled data and unlabeled data through pseudo-labeling techniques. The proposed method also significantly reduces the information loss during discretization by utilizing an adaptive discriminative discretization scheme, and hence greatly improves the discrimination power of classifiers. The proposed RNB+, i.e., regularized naive Bayes utilizing the proposed discretization framework, is systematically evaluated on a wide range of machine-learning datasets. It significantly and consistently outperforms state-of-the-art NB classifiers.

Original languageEnglish
Article number120094
JournalExpert Systems with Applications
Volume225
DOIs
Publication statusPublished - 1 Sept 2023

Keywords

  • Adaptive discriminative discretization
  • Attribute weighting
  • Naive Bayes classifier
  • Semi-supervised discretization

ASJC Scopus subject areas

  • General Engineering
  • Computer Science Applications
  • Artificial Intelligence

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