Word-level emotion distribution with two schemas for short text emotion classification

Zongxi LI, Haoran XIE, Kwok Shing CHENG, Qing LI

Research output: Contribution to journalArticlespeer-review

2 Citations (Scopus)

Abstract

Understanding word-level emotion in terms of both category and intensity has always been considered an essential step in addressing text emotion classification tasks. Existing studies have mainly adopted the categorical lexicons that are tagged by predefined emotion taxonomies to link affective words with discrete emotions. However, in these lexicons, emotion tags are restricted to a specific set of basic emotions. Moreover, the emotional intensity is ignored, making these methods less flexible and less informative. This paper proposes a novel method to generate a word-level emotion distribution (WED) vector by incorporating domain knowledge and dimensional lexicon. The proposed method can link a word with more generic and fine-grained emotion taxonomies with quantitatively computed intensities. We propose two schemas to utilize the WED vector implicitly and explicitly to facilitate classification. The implicit approach implements a rule-based conversion strategy to augment the information in the label space. The explicit approach exploits WED as an emotional word embedding to enhance the sentiment feature. We conduct extensive experiments on seven multiclass datasets. The results indicate that both proposed schemas produce competitive results compared with the state-of-the-art baselines. Copyright © 2021 Elsevier B.V. All rights reserved.
Original languageEnglish
Article number107163
JournalKnowledge-Based Systems
Volume227
Early online dateMay 2021
DOIs
Publication statusPublished - Sep 2021

Citation

Li, Z., Xie, H., Cheng, G., & Li, Q. (2021). Word-level emotion distribution with two schemas for short text emotion classification. Knowledge-Based Systems, 227. Retrieved from https://doi.org/10.1016/j.knosys.2021.107163

Keywords

  • Emotion classification
  • Emotional embedding
  • VAD
  • Emotional lexicon

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