Ensemble deep learning for aspect-based sentiment analysis | ||
| International Journal of Nonlinear Analysis and Applications | ||
| دوره 12، Special Issue، اسفند 2021، صفحه 29-38 اصل مقاله (336.02 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22075/ijnaa.2021.4769 | ||
| نویسندگان | ||
| Azadeh Mohammadi* 1؛ Anis Shaverizade2 | ||
| 1Assistant Professor, Computer Department, University of Isfahan, Isfahan, Iran. | ||
| 2Graduate student, IT and Computer Department, Sepahan Institute of Higher Education, Isfahan, Iran. | ||
| چکیده | ||
| Sentiment analysis is a subfield of Natural Language Processing (NLP) which tries to process a text to extract opinions or attitudes towards topics or entities. Recently, the use of deep learning methods for sentiment analysis has received noticeable attention from researchers. Generally, different deep learning methods have shown superb performance in sentiment analysis problem. However, deep learning models are different in nature and have different strengths and limitations. For example, convolutional neural networks are useful for extracting local structures from data, while recurrent models are able to learn order dependence in sequential data. In order to combine the advantages of different deep models, in this paper we have proposed a novel approach for aspect-based sentiment analysis which utilizes deep ensemble learning. In the proposed method, we first build four deep learning models, namely CNN, LSTM, BiLSTM and GRU. Then the outputs of these models are combined using stacking ensemble approach where we have used logistic regression as meta-learner. The results of applying the proposed method on the real datasets show that our method has increased the accuracy of aspect-based prediction by 5% to 20% compared to the basic deep learning methods. | ||
| کلیدواژهها | ||
| Deep Learning؛ Ensemble Learning؛ Natural Language Processing؛ Opinion Mining؛ Sentiment Analysis | ||
| مراجع | ||
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