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Text classification in a hierarchical mixture model for small training sets

Published: 05 October 2001 Publication History

Abstract

Documents are commonly categorized into hierarchies of topics, such as the ones maintained by Yahoo! and the Open Directory project, in order to facilitate browsing and other interactive forms of information retrieval. In addition, topic hierarchies can be utilized to overcome the sparseness problem in text categorization with a large number of categories, which is the main focus of this paper. This paper presents a hierarchical mixture model which extends the standard naive Bayes classifier and previous hierarchical approaches. Improved estimates of the term distributions are made by differentiation of words in the hierarchy according to their level of generality/specificity. Experiments on the Newsgroups and the Reuters-21578 dataset indicate improved performance of the proposed classifier in comparison to other state-of-the-art methods on datasets with a small number of positive examples.

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cover image ACM Conferences
CIKM '01: Proceedings of the tenth international conference on Information and knowledge management
October 2001
616 pages
ISBN:1581134363
DOI:10.1145/502585
Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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Published: 05 October 2001

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  • (2020)A Neural-based Architecture For Small Datasets ClassificationProceedings of the ACM/IEEE Joint Conference on Digital Libraries in 202010.1145/3383583.3398535(319-327)Online publication date: 1-Aug-2020
  • (2020)Text classification using Naïve Bayes classifierMaterials Today: Proceedings10.1016/j.matpr.2020.10.058Online publication date: Nov-2020
  • (2019)An Approach to Enhance Text Categorization through Shrinkage in a Hierarchy of ModulesABC Journal of Advanced Research10.18034/abcjar.v8i2.5628:2(123-130)Online publication date: 31-Dec-2019
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  • (2012)An Improvement for Naive Bayes Text Classification Applied to Online Imbalanced Crowdsourced CorpusesModern Advances in Intelligent Systems and Tools10.1007/978-3-642-30732-4_19(147-152)Online publication date: 2012
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