Learning Representation From Concurrence-Words Graph For Aspect Sentiment Classification. (23rd July 2021)

• Record Type: Journal Article
• Authors: Lu, Guangquan; Huang, Jihong
• Is Part Of: Computer journal. Volume 64:Number 7(2021)
• Page Start: 1069
• Page End: 1079
• Publication Date: 2021-07-23
• Subjects: aspect sentiment classification -- graph convolution networks -- opinion mining -- multi-head attention mechanism; Computers -- Periodicals; 005.1
• DOI: 10.1093/comjnl/bxab104
• Languages: English
• ISSNs: 0010-4620

Abstract

Abstract: Aspect sentiment classification is an important research topic in natural language processing and computational linguistics, assisting in automatically review analysis and emotional tendency judgement. Different from extant methods that focus on text sequence representations, this paper presents a network framework to learn representation from concurrence-words relation graph (LRCWG), so as to improve the Macro-F1 and accuracy. The LRCWG first employs the multi-head attention mechanism to capture the sentiment representation from the sentences which can learn the importance of text sequence representation. And then, it leverages the priori sentiment dictionary information to construct the concurrence relations of sentiment words with Graph Convolution Network (GCN). This assists in that the learnt context representation can keep both the semantics integrity and the features of sentiment concurrence-words relations. The designed algorithm is experimentally evaluated with all the five benchmark datasets and demonstrated that the proposed aspect sentiment classification can significantly improve the prediction performance of learning task.