Heuristic multi-scale feature fusion with attention-based CNN for sentiment analysis

The sentiment analysis is an essential component that enables automation of achieving insights from the information that is user generated. However, the difficulty of sentiment analysis is the lack of enough labelled data in the Natural Language Processing (NLP) sector. Thus, to evaluate these sentiments, multiple mechanisms have been utilized in the past decades. The deep learning-aided approaches are becoming very famous nowadays because of their better performances. To surmount such existing issues, an attention deep learning model is proposed using an improved heuristic approach. At first, the input text data is gathered from public resources. Further, it is followed by text pre-processing to prevent unrelated text data. Further, the obtained pre-processed text is fed into the Multiscale Feature Fusion-based Adaptive and Attention-based Convolution Neural Network (MFF-AACNet). In the developed system, the features are extracted from Bidirectional Encoder Representations from Transformers (BERT), Transformers, and word2vector. Furthermore, the resultant features are fused, and it is subjected to the MFF-AACNet, where the sentiment is analysed. The parameter tuning is done by an improved Fitness Opposition of Rat Swarm Optimizer (FORSO). Finally, the performance analysis was conducted for the implemented model. The proposed framework achieves higher accuracy compared to traditional methods.