Machine Learning in Automated Text Categorization

Fabrizio Sebastiani

Research output: Contribution to journalArticle

4903 Citations (Scopus)

Abstract

The automated categorization (or classification) of texts into predefined categories has witnessed a booming interest in the last 10 years, due to the increased availability of documents in digital form and the ensuing need to organize them. In the research community the dominant approach to this problem is based on machine learning techniques: a general inductive process automatically builds a classifier by learning, from a set of preclassified documents, the characteristics of the categories. The advantages of this approach over the knowledge engineering approach (consisting in the manual definition of a classifier by domain experts) are a very good effectiveness, considerable savings in terms of expert labor power, and straightforward portability to different domains. This survey discusses the main approaches to text categorization that fall within the machine learning paradigm. We will discuss in detail issues pertaining to three different problems, namely, document representation, classifier construction, and classifier evaluation.

Original languageEnglish
Pages (from-to)1-47
Number of pages47
JournalACM Computing Surveys
Volume34
Issue number1
DOIs
Publication statusPublished - Mar 2002
Externally publishedYes

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Keywords

  • Machine learning
  • Text categorization
  • Text classification

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computational Theory and Mathematics

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