The goal of aspect-level sentiment classification (ASC) task is to obtain the
sentiment polarity of aspect words in the text. Most existing methods ignore
the implicit aspects, resulting in low classification accuracy. To improve
the accuracy, this paper proposes a classification model for consumer
reviews, abbreviated as TS-GCN (Truncated history attention and Selective
transformation network-Graph Convolutional Networks). TS-GCN can classify
sentiment from both explicit and implicit aspects. Firstly, we process the
text by the BERT model and the BiLSTM model to obtain the text features.
Secondly, the GCN model completes explicit sentiment classification by
training text features. Due to the lack of implicit words, the GCN model
cannot classify implicit sentiments. Finally, we predict implicit words
based on the TS model, which makes up for the deficiency of the GCN model and
completes the sentiment classification of implicit words. TS-GCN is proved
on several datasets in the consumer reviews field. The results of
experiments show that the TS-GCN can improve the accuracy and F1 of ASC.