Multimodal Sentiment Analysis Based on Deep Learning Methods Such as Convolutional Neural Networks

Topic Information

Dear Colleagues,

This Special Issue is aimed at researchers who are working on large scale data with real-word problem solving. Every social media app is generating data in GBs that require researcher attention for identifying useful patterns and information. Due to globalization, every social media content is shared and commented on by diverse background users. The data contain several opinions in different languages on the similar topics. The classical approach for text classification, i.e., sentiment analysis, mainly relies on NLP techniques related to single language. However, it is important to propose a model that can learn features from multilingual data. Submissions on this issue focused on theoretical expansion and also the applications of sentiment analysis on our daily life are invited. Topics of interest include but are not limited to the following areas:

• Text classification;
• Opinion mining;
• Visualization of opinions;
• Social network analysis for sentiment analysis;
• Multi-model learning for text classification;
• Multi-lingual sentiment analysis;
• Applications for sentiment analysis;
• Explainable artificial intelligence for sentiment analysis;
• Aspect-based sentiment analysis;
• Hate speech detection;
• Sarcasm and irony detection.

Dr. Junaid Baber
Dr. Ali Shariq Imran
Prof. Dr. Doudpota Sher
Dr. Bakhtyar Maheen
Topic Editors

Keywords

Participating Journals

Journal Name	Impact Factor	CiteScore	Launched Year	First Decision (median)	APC
Algorithms algorithms	2.3	3.7	2008	15 Days	CHF 1600	Submit
Axioms axioms	2.0	-	2012	21.8 Days	CHF 2400	Submit
Future Internet futureinternet	3.4	6.7	2009	11.8 Days	CHF 1600	Submit
Mathematics mathematics	2.4	3.5	2013	16.9 Days	CHF 2600	Submit
Symmetry symmetry	2.7	4.9	2009	16.2 Days	CHF 2400	Submit

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Published Papers (4 papers)

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All Algorithms Axioms Future Internet Mathematics Symmetry

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20 pages, 6478 KiB  

Open AccessArticle

CSINet: Channel–Spatial Fusion Networks for Asymmetric Facial Expression Recognition

by Yan Cheng and Defeng Kong

Symmetry 2024, 16(4), 471; https://doi.org/10.3390/sym16040471 - 12 Apr 2024

Viewed by 443

Abstract

Occlusion or posture change of the face in natural scenes has typical asymmetry; however, an asymmetric face plays a key part in the lack of information available for facial expression recognition. To solve the problem of low accuracy of asymmetric facial expression recognition, [...] Read more.

Occlusion or posture change of the face in natural scenes has typical asymmetry; however, an asymmetric face plays a key part in the lack of information available for facial expression recognition. To solve the problem of low accuracy of asymmetric facial expression recognition, this paper proposes a fusion of channel global features and a spatial local information expression recognition network called the “Channel–Spatial Integration Network” (CSINet). First, to extract the underlying detail information and deepen the network, the attention residual module with a redundant information filtering function is designed, and the backbone feature-extraction network is constituted by module stacking. Second, considering the loss of information in the local key area of face occlusion, the channel–spatial fusion structure is constructed, and the channel features and spatial features are combined to enhance the accuracy of occluded facial recognition. Finally, before the full connection layer, more local spatial information is embedded into the global channel information to capture the relationship between different channel–spatial targets, which improves the accuracy of feature expression. Experimental results on the natural scene facial expression data sets RAF-DB and FERPlus show that the recognition accuracies of the modeling approach proposed in this paper are 89.67% and 90.83%, which are 13.24% and 11.52% higher than that of the baseline network ResNet50, respectively. Compared with the latest facial expression recognition methods such as CVT, PACVT, etc., the method in this paper obtains better evaluation results of masked facial expression recognition, which provides certain theoretical and technical references for daily facial emotion analysis and human–computer interaction applications. Full article

(This article belongs to the Topic Multimodal Sentiment Analysis Based on Deep Learning Methods Such as Convolutional Neural Networks)

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13 pages, 1270 KiB  

Open AccessArticle

Multimodal Prompt Learning in Emotion Recognition Using Context and Audio Information

by Eunseo Jeong, Gyunyeop Kim and Sangwoo Kang

Mathematics 2023, 11(13), 2908; https://doi.org/10.3390/math11132908 - 28 Jun 2023

Cited by 3 | Viewed by 1932

Abstract

Prompt learning has improved the performance of language models by reducing the gap in language model training methods of pre-training and downstream tasks. However, extending prompt learning in language models pre-trained with unimodal data to multimodal sources is difficult as it requires additional [...] Read more.

Prompt learning has improved the performance of language models by reducing the gap in language model training methods of pre-training and downstream tasks. However, extending prompt learning in language models pre-trained with unimodal data to multimodal sources is difficult as it requires additional deep-learning layers that cannot be attached. In the natural-language emotion-recognition task, improved emotional classification can be expected when using audio and text to train a model rather than only natural-language text. Audio information, such as voice pitch, tone, and intonation, can give more information that is unavailable in text to predict emotions more effectively. Thus, using both audio and text can enable better emotion prediction in speech emotion-recognition models compared to semantic information alone. In this paper, in contrast to existing studies that use multimodal data with an additional layer, we propose a method for improving the performance of speech emotion recognition using multimodal prompt learning with text-based pre-trained models. The proposed method is using text and audio information in prompt learning by employing a language model pre-trained on natural-language text. In addition, we propose a method to improve the emotion-recognition performance of the current utterance using the emotion and contextual information of the previous utterances for prompt learning in speech emotion-recognition tasks. The performance of the proposed method was evaluated using the English multimodal dataset MELD and the Korean multimodal dataset KEMDy20. Experiments using both the proposed methods obtained an accuracy of 87.49%, $F_1$ score of 44.16, and weighted $F_1$ score of 86.28. Full article

(This article belongs to the Topic Multimodal Sentiment Analysis Based on Deep Learning Methods Such as Convolutional Neural Networks)

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21 pages, 1274 KiB  

Open AccessArticle

Quantum-Inspired Fully Complex-Valued Neutral Network for Sentiment Analysis

by Wei Lai, Jinjing Shi and Yan Chang

Axioms 2023, 12(3), 308; https://doi.org/10.3390/axioms12030308 - 19 Mar 2023

Cited by 4 | Viewed by 2171

Abstract

Most of the existing quantum-inspired models are based on amplitude-phase embedding to model natural language, which maps words into Hilbert space. In quantum-computing theory, the vectors corresponding to quantum states are all complex values, so there is a gap between these two areas. [...] Read more.

Most of the existing quantum-inspired models are based on amplitude-phase embedding to model natural language, which maps words into Hilbert space. In quantum-computing theory, the vectors corresponding to quantum states are all complex values, so there is a gap between these two areas. Presently, complex-valued neural networks have been studied, but their practical applications are few, let alone in the downstream tasks of natural language processing such as sentiment analysis and language modeling. In fact, the complex-valued neural network can use the imaginary part information to embed hidden information and can express more complex information, which is suitable for modeling complex natural language. Meanwhile, quantum-inspired models are defined in Hilbert space, which is also a complex space. So it is natural to construct quantum-inspired models based on complex-valued neural networks. Therefore, we propose a new quantum-inspired model for NLP, ComplexQNN, which contains a complex-valued embedding layer, a quantum encoding layer, and a measurement layer. The modules of ComplexQNN are fully based on complex-valued neural networks. It is more in line with quantum-computing theory and easier to transfer to quantum computers in the future to achieve exponential acceleration. We conducted experiments on six sentiment-classification datasets comparing with five classical models (TextCNN, GRU, ELMo, BERT, and RoBERTa). The results show that our model has improved by 10% in accuracy metric compared with TextCNN and GRU, and has competitive experimental results with ELMo, BERT, and RoBERTa. Full article

(This article belongs to the Topic Multimodal Sentiment Analysis Based on Deep Learning Methods Such as Convolutional Neural Networks)

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16 pages, 5311 KiB  

Open AccessArticle

Product Evaluation Prediction Model Based on Multi-Level Deep Feature Fusion

by Qingyan Zhou, Hao Li, Youhua Zhang and Junhong Zheng

Future Internet 2023, 15(1), 31; https://doi.org/10.3390/fi15010031 - 09 Jan 2023

Viewed by 1338

Abstract

Traditional product evaluation research is to collect data through questionnaires or interviews to optimize product design, but the whole process takes a long time to deploy and cannot fully reflect the market situation. Aiming at this problem, we propose a product evaluation prediction [...] Read more.

Traditional product evaluation research is to collect data through questionnaires or interviews to optimize product design, but the whole process takes a long time to deploy and cannot fully reflect the market situation. Aiming at this problem, we propose a product evaluation prediction model based on multi-level deep feature fusion of online reviews. It mines product satisfaction from the massive reviews published by users on e-commerce websites, and uses this model to analyze the relationship between design attributes and customer satisfaction, design products based on customer satisfaction. Our proposed model can be divided into the following four parts: First, the DSCNN (Depthwise Separable Convolutions) layer and pooling layer are used to combine extracting shallow features from the primordial data. Secondly, CBAM (Convolutional Block Attention Module) is used to realize the dimension separation of features, enhance the expressive ability of key features in the two dimensions of space and channel, and suppress the influence of redundant information. Thirdly, BiLSTM (Bidirectional Long Short-Term Memory) is used to overcome the complexity and nonlinearity of product evaluation prediction, output the predicted result through the fully connected layer. Finally, using the global optimization capability of the genetic algorithm, the hyperparameter optimization of the model constructed above is carried out. The final forecasting model consists of a series of decision rules that avoid model redundancy and achieve the best forecasting effect. It has been verified that the method proposed in this paper is better than the above-mentioned models in five evaluation indicators such as MSE, MAE, RMSE, MAPE and SMAPE, compared with Support Vector Regression (SVR), DSCNN, BiLSTM and DSCNN-BiLSTM. By predicting customer emotional satisfaction, it can provide accurate decision-making suggestions for enterprises to design new products. Full article

(This article belongs to the Topic Multimodal Sentiment Analysis Based on Deep Learning Methods Such as Convolutional Neural Networks)

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