BGAT: Aspect-based sentiment analysis based on bidirectional GRU and graph attention network

Author:

Zhang Xinyu12,Yu Long3,Tian Shengwei12

Affiliation:

1. School of Software, XinJiang University, Urumqi, China

2. Key Laboratory of Software Engineering Technology, Xinjiang University, Urumqi, China

3. Network Center, XinJiang University, Urumqi, China

Abstract

In today’s social media and various frequently used lifestyle applications, the phenomenon that people express their sentiment via comments or instant barrage is common. People not only show their joys and sorrows in the process of expression but also present their opinions to one thing in many aspects which include. Nowadays, aspect-based sentiment analysis has become a mature and wildly-used technology. There are many public datasets considered as a benchmark to test model performance, such as Laptop2014, Restaurant2014, Twitter, etc. In our work, we also use these public datasets as the test criteria. Current mainstream models generally use the methods of stacking multi-RNNs layers or combining neural networks and BERT or other pre-trained models. On account of the importance displayed by the dependence between aspect words and sentiment words, we investigate a novel model (BGAT) blending bidirectional gated recurrent unit (BiGRU) and relational graph attention network (RGAT) to learn dependencies information. Extensive experiments have been conducted on five datasets, the results demonstrate the great capability of our model.

Publisher

IOS Press

Subject

Artificial Intelligence,General Engineering,Statistics and Probability

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