Sentiment Classification in Social Media Data by Combining Triplet Belief Functions

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Sentiment analysis is an emerging technique that caters for semantic orientation and opinion mining. It is increasingly used to analyze online reviews and posts for identifying people's opinions and attitudes to products and events in order to improve business performance of companies and aid to make better organizing strategies of events. This paper presents an innovative approach to combining the outputs of sentiment classifiers under the framework of belief functions. It consists of the formulation of sentiment classifier outputs in the triplet evidence structure and the development of general formulas for combining triplet functions derived from sentiment classification results via three evidential combination rules along with comparative analyses. The empirical studies have been conducted on examining the effectiveness of our method for sentiment classification individually and in combination, and the results demonstrate that the best combined classifiers by our method outperforms the best individual classifiers over five review datasets.

Original languageEnglish
Article number29
Pages (from-to)1-24
Number of pages24
JournalJournal of the Association for Information Science and Technology
Early online date18 Nov 2021
Publication statusPublished online - 18 Nov 2021

Bibliographical note

Publisher Copyright:
© 2021 Association for Information Science and Technology.


  • Sentiment analysis
  • triplet belief functions
  • sentiment classification
  • social media data


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