The increasing popularity of the Web has subsequently increased the abundance of reviews on products and services. Mining these reviews for expressed sentiment is beneficial for both companies and consumers, as quality can be improved based on this information. In this paper, we consider the state-of-the-art HAABSA++ algorithm for aspect-based sentiment analysis tasked with identifying the sentiment expressed towards a given aspect in review sentences. Specifically, we train the neural network part of this algorithm using an adversarial network, a novel machine learning training method where a generator network tries to fool the classifier network by generating highly realistic new samples, as such increasing robustness. This method, as of yet never in its classical form applied to aspect-based sentiment analysis, is found to be able to considerably improve the out-of-sample accuracy of HAABSA++: for the SemEval 2015 dataset, accuracy was increased from 81.7% to 82.5%, and for the SemEval 2016 task, accuracy increased from 84.4% to 87.3%.
|Title of host publication||22nd International Conference on Web Information Systems Engineering (WISE 2021)|
|Editors||Wenjie Zhang, Lei Zou, Zakaria Maamar, Lu Chen|
|Number of pages||15|
|Publication status||Published - 2021|
|Event||22nd International Conference on Web Information Systems Engineering, WISE 2021 - Melbourne, Australia|
Duration: 26 Oct 2021 → 29 Oct 2021
|Series||Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)|
|Conference||22nd International Conference on Web Information Systems Engineering, WISE 2021|
|Period||26/10/21 → 29/10/21|
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