Sentiment analysis is a particularly common task for determining user thoughts and has been widely used in Natural Language Processing (NLP) applications. Gated Recurrent Unit (GRU) was already effectively integrated into the NLP process with comparatively excellent results. GRU networks outperform traditional recurrent neural networks in sequential learning tasks and solve gradient vanishing and explosion limitation of RNNs. In this paper, a novel approach as known Normalize Auto-Encoded GRU (NAE-GRU) was proposed, in order to reduce dimensionality of data through an Auto-Encoder and enhance the performance of the proposed approach by using batch normalization. Empirically, we demonstrate that the proposed model, with minor hyperparameters modification, and statistic vectors optimization, achieves outstanding sentiment classification performance on benchmark datasets. The developed NAE-GRU approach outperforms than other different traditional methods in terms of accuracy and convergence rate. The experimental results have showed that the developed approach accomplished excellent performance than existing approaches on four benchmark datasets included, Amazon review, Yelp review, IMDB and SSTb. The experimental results have showed that the developed approach is proficient to reduce the loss function, and capture long-term relationships with an effective design that achieved excellent results as compared state-of-the-art methods.
In today’s world, stress is a major factor for various diseases in modern societies which affects the day-to-day activities of human beings. The measurement of stress is a contributing factor for governments and societies that impacts the quality of daily lives. The strategy of stress monitoring systems requires an accurate stress classification technique which is identified via the reactions of the body to regulate itself to changes within the environment through mental and emotional responses. Therefore, this research proposed a novel deep learning approach for the stress classification system. In this paper, we presented an Enhanced Long Short-Term Memory(E-LSTM) based on the feature attention mechanism that focuses on determining and categorizing the stress polarity using sequential modeling and word-feature seizing. The proposed approach integrates pre-feature attention in E-LSTM to identify the complicated relationship and extract the keywords through an attention layer for stress classification. This research has been evaluated using a selected dataset accessed from the sixth Korea National Health and Nutrition Examination Survey conducted from 2013 to 2015 (KNHANES VI) to analyze health-related stress data. Statistical performance of the developed approach was analyzed based on the nine features of stress detection, and we compared the effectiveness of the developed approach with other different stress classification approaches. The experimental results shown that the developed approach obtained accuracy, precision, recall and a F1-score of 75.54%, 74.26%, 72.99% and 74.58%, respectively. The feature attention mechanism-based E-LSTM approach demonstrated superior performance in stress detection classification when compared to other classification methods including naïve Bayesian, SVM, deep belief network, and standard LSTM. The results of this study demonstrated the efficiency of the proposed approach in accurately classifying stress detection, particularly in stress monitoring systems where it is expected to be effective for stress prediction.
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