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Cross-Target Stance Detection with Sentiments-Aware Hierarchical Attention Network
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作者 Kelan Ren Facheng Yan +3 位作者 Honghua Chen Wen Jiang Bin Wei Mingshu Zhang 《Computers, Materials & Continua》 SCIE EI 2024年第10期789-807,共19页
The task of cross-target stance detection faces significant challenges due to the lack of additional background information in emerging knowledge domains and the colloquial nature of language patterns.Traditional stan... The task of cross-target stance detection faces significant challenges due to the lack of additional background information in emerging knowledge domains and the colloquial nature of language patterns.Traditional stance detection methods often struggle with understanding limited context and have insufficient generalization across diverse sentiments and semantic structures.This paper focuses on effectively mining and utilizing sentimentsemantics knowledge for stance knowledge transfer and proposes a sentiment-aware hierarchical attention network(SentiHAN)for cross-target stance detection.SentiHAN introduces an improved hierarchical attention network designed to maximize the use of high-level representations of targets and texts at various fine-grain levels.This model integrates phrase-level combinatorial sentiment knowledge to effectively bridge the knowledge gap between known and unknown targets.By doing so,it enables a comprehensive understanding of stance representations for unknown targets across different sentiments and semantic structures.The model’s ability to leverage sentimentsemantics knowledge enhances its performance in detecting stances that may not be directly observable from the immediate context.Extensive experimental results indicate that SentiHAN significantly outperforms existing benchmark methods in terms of both accuracy and robustness.Moreover,the paper employs ablation studies and visualization techniques to explore the intricate relationship between sentiment and stance.These analyses further confirm the effectiveness of sentence-level combinatorial sentiment knowledge in improving stance detection capabilities. 展开更多
关键词 Cross-target stance detection sentiment analysis commentary-level texts hierarchical attention network
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Spatial-temporal Patterns of Urban Parks’Effects on the Sentiments and Their Associated Factors Based on Social Media Data——a Case Study in Beijing
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作者 YUAN Yuting WANG Juan +3 位作者 WEI Yali ZHU Yanrong SHI Changsheng MENG Bin 《Journal of Geodesy and Geoinformation Science》 CSCD 2024年第2期95-110,共16页
As the pivotal green space,urban parks play an important role in urban residents’daily activities.Thy can not only bring people physical health,but also can be more likely to elicit positive sentiment to those who vi... As the pivotal green space,urban parks play an important role in urban residents’daily activities.Thy can not only bring people physical health,but also can be more likely to elicit positive sentiment to those who visit them.Recently,social media big data has provided new data sources for sentiment analysis.However,there was limited researches that explored the connection between urban parks and individual’s sentiments.Therefore,this study firstly employed a pre-trained language model(BERT,Bidirectional Encoder Representations from Transformers)to calculate sentiment scores based on social media data.Secondly,this study analysed the relationship between urban parks and individual’s sentiment from both spatial and temporal perspectives.Finally,by utilizing structural equation model(SEM),we identified 13 factors and analyzed its degree of the influence.The research findings are listed as below:①It confirmed that individuals generally experienced positive sentiment with high sentiment scores in the majority of urban parks;②The urban park type showed an influence on sentiment scores.In this study,higher sentiment scores observed in Eco-parks,comprehensive parks,and historical parks;③The urban parks level showed low impact on sentiment scores.With distinctions observed mainly at level-3 and level-4;④Compared to internal factors in parks,the external infrastructure surround them exerted more significant impact on sentiment scores.For instance,number of bus and subway stations around urban parks led to higher sentiment scores,while scenic spots and restaurants had inverse result.This study provided a novel method to quantify the services of various urban parks,which can be served as inspiration for similar studies in other cities and countries,enhancing their park planning and management strategies. 展开更多
关键词 urban parks sentiment analysis social media data SEM BEIJING
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亚当·斯密道德理论的核心是什么?——The Theory of Moral Sentiments题解 被引量:3
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作者 罗卫东 张亚萍 《浙江大学学报(人文社会科学版)》 CSSCI 北大核心 2016年第2期97-109,共13页
亚当·斯密是一位特别注重修辞的学者,要想准确把握其道德理论核心,需要认真分析其代表作《道德情操论》的文本。The Theory of Moral Sentiments(TMS)标题中的moral sentiments是指人类在道德判断上的一种基本能力,是包含同情、良... 亚当·斯密是一位特别注重修辞的学者,要想准确把握其道德理论核心,需要认真分析其代表作《道德情操论》的文本。The Theory of Moral Sentiments(TMS)标题中的moral sentiments是指人类在道德判断上的一种基本能力,是包含同情、良知、审美以及道德推理等多方面内容的,其根源在于人类以自己同情共感的能力经验到各种道德实践,又通过归纳、反思和推理来将其一般化,最后上升为指导道德抉择和道德行为的原理。斯密道德论的核心绝非"道德情操"本身,而是各种道德情感得以形成的同情共感机制。现在被广泛接受的中文翻译书名《道德情操论》容易误导读者,而翻译成《道德情感论》更符合斯密道德理论的核心内涵。 展开更多
关键词 亚当·斯密 The THEORY of MORAL sentiments 《道德情操论》 《道德情感论》
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Deep Learning Framework for Classification of Emoji Based Sentiments
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作者 Nighat Parveen Shaikh Mumtaz Hussain Mahar 《Computers, Materials & Continua》 SCIE EI 2022年第8期3145-3158,共14页
Recent patterns of human sentiments are highly influenced by emoji based sentiments(EBS).Social media users are widely using emoji based sentiments(EBS)in between text messages,tweets and posts.Although tiny pictures ... Recent patterns of human sentiments are highly influenced by emoji based sentiments(EBS).Social media users are widely using emoji based sentiments(EBS)in between text messages,tweets and posts.Although tiny pictures of emoji contains sufficient information to be considered for construction of classification model;but due to the wide range of dissimilar,heterogynous and complex patterns of emoji with similarmeanings(SM)have become one of the significant research areas of machine vision.This paper proposes an approach to provide meticulous assistance to social media application(SMA)users to classify the EBS sentiments.Proposed methodology consists upon three layerswhere first layer deals with data cleaning and feature selection techniques to detect dissimilar emoji patterns(DEP)with similar meanings(SM).In first sub step we input set of emoji,in second sub step every emoji has to qualify user defined threshold,in third sub step algorithm detects every emoji by considering as objects and in fourth step emoji images are cropped,after data cleaning these tiny images are saved as emoji images.In second step we build classification model by using convolutional neural networks(CNN)to explore hidden knowledge of emoji datasets.In third step we present results visualization by using confusion matrix and other estimations.This paper contributes(1)data cleaning method to detect EBS;(2)highest classification accuracy for emoji classification measured as 97.63%. 展开更多
关键词 Deep learning machine vision convolutional neural networks social media emoji based sentiments
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My German Colleagues' Sentiments towards China
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作者 Xiao Lan 《International Understanding》 2013年第2期29-31,共3页
I was sent twice by CAFIU to work at Beijing Office of the Friedrich-Ebert-Stiftung(FES) of Germany when I had the honor to get familiar with my German colleagues. This helped me know more about the national characte... I was sent twice by CAFIU to work at Beijing Office of the Friedrich-Ebert-Stiftung(FES) of Germany when I had the honor to get familiar with my German colleagues. This helped me know more about the national character of the German people. Moved by their friendly sentiments towards the Chinese people and their deep interest in 展开更多
关键词 FES My German Colleagues sentiments towards China
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Investor sentiments and stock marketsduring the COVID-19 pandemic 被引量:2
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作者 Emre Cevik Buket Kirci Altinkeski +1 位作者 Emrah Ismail Cevik Sel Dibooglu 《Financial Innovation》 2022年第1期1896-1929,共34页
This study examines the relationship between positive and negative investor sentiments and stock market returns and volatility in Group of 20 countries using variousmethods, including panel regression with fixed effec... This study examines the relationship between positive and negative investor sentiments and stock market returns and volatility in Group of 20 countries using variousmethods, including panel regression with fixed effects, panel quantile regressions, apanel vector autoregression (PVAR) model, and country-specific regressions. We proxyfor negative and positive investor sentiments using the Google Search Volume Indexfor terms related to the coronavirus disease (COVID-19) and COVID-19 vaccine, respectively. Using weekly data from March 2020 to May 2021, we document significantrelationships between positive and negative investor sentiments and stock marketreturns and volatility. Specifically, an increase in positive investor sentiment leads toan increase in stock returns while negative investor sentiment decreases stock returnsat lower quantiles. The effect of investor sentiment on volatility is consistent acrossthe distribution: negative sentiment increases volatility, whereas positive sentimentreduces volatility. These results are robust as they are corroborated by Granger causalitytests and a PVAR model. The findings may have portfolio implications as they indicatethat proxies for positive and negative investor sentiments seem to be good predictorsof stock returns and volatility during the pandemic. 展开更多
关键词 COVID-19 Investor sentiment Stock market returns VOLATILITY
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Investigating User Ridership Sentiments for Bike Sharing Programs 被引量:2
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作者 Subasish Das Xiaoduan Sun Anandi Dutta 《Journal of Transportation Technologies》 2015年第2期69-75,共7页
Bike sharing is considered a state-of-the-art transportation program. It is ideal for short or medium trips providing riders the ability to pick up a bike at any self-serve bike station and return it to any bike stati... Bike sharing is considered a state-of-the-art transportation program. It is ideal for short or medium trips providing riders the ability to pick up a bike at any self-serve bike station and return it to any bike station located within the system’s coverage area. The bike sharing programs in the United States are still very young compared to those in European countries. Washington DC was the first jurisdiction to devise a third generation bike sharing system in the US in 2008. To evaluate the popularity of a bike sharing program, a sentiment analysis of the riders’ feedback can be performed. Twitter is a great platform to understand people’s views instantly. Social media mining is, thus, gaining popularity in many research areas including transportation. Social media mining has two major advantages over conventional attitudinal survey methods—it can easily reach a large audience and it can reflect the true behavior of participants because of the anonymity social media provides. It is known that self-imposed censor is common in responding to conversational attitudinal surveys. This study performed text mining on the tweets related to a case study (Capital Bike share of Washington DC) to perform sentiment analysis or opinion mining. The results of the text mining mostly revealed higher positive sentiments towards the current system. 展开更多
关键词 BIKE SHARING Social Media Twitter MINING Text ANALYTIC SENTIMENT Analysis OPINION MINING
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AI-based Automated Extraction of Location-Oriented COVID-19 Sentiments
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作者 Fahim K.Sufi Musleh Alsulami 《Computers, Materials & Continua》 SCIE EI 2022年第8期3631-3649,共19页
The coronavirus disease(COVID-19)pandemic has affected the lives of social media users in an unprecedentedmanner.They are constantly posting their satisfaction or dissatisfaction over the COVID-19 situation at their l... The coronavirus disease(COVID-19)pandemic has affected the lives of social media users in an unprecedentedmanner.They are constantly posting their satisfaction or dissatisfaction over the COVID-19 situation at their location of interest.Therefore,understanding location-oriented sentiments about this situation is of prime importance for political leaders,and strategic decision-makers.To this end,we present a new fully automated algorithm based on artificial intelligence(AI),for extraction of location-oriented public sentiments on the COVID-19 situation.We designed the proposed system to obtain exhaustive knowledge and insights on social media feeds related to COVID-19 in 110 languages through AI-based translation,sentiment analysis,location entity detection,and decomposition tree analysis.We deployed fully automated algorithm on live Twitter feed from July 15,2021 and it is still running as of 12 January,2022.The system was evaluated on a limited dataset between July 15,2021 to August 10,2021.During this evaluation timeframe 150,000 tweets were analyzed and our algorithm found that 9,900 tweets contained one or more location entities.In total,13,220 location entities were detected during the evaluation period,and the rates of average precision and recall rate were 0.901 and 0.967,respectively.As of 12 January,2022,the proposed solution has detected 43,169 locations using entity recognition.According to the best of our knowledge,this study is the first to report location intelligence with entity detection,sentiment analysis,and decomposition tree analysis on social media messages related to COVID-19 and has covered the largest set of languages. 展开更多
关键词 Entity recognition AI-based social media monitoring sentiment analysis decision support system COVID-19
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Analyzing Arabic Twitter-Based Patient Experience Sentiments Using Multi-Dialect Arabic Bidirectional Encoder Representations from Transformers
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作者 Sarab AlMuhaideb Yasmeen AlNegheimish +3 位作者 Taif AlOmar Reem AlSabti Maha AlKathery Ghala AlOlyyan 《Computers, Materials & Continua》 SCIE EI 2023年第7期195-220,共26页
Healthcare organizations rely on patients’feedback and experiences to evaluate their performance and services,thereby allowing such organizations to improve inadequate services and address any shortcomings.According ... Healthcare organizations rely on patients’feedback and experiences to evaluate their performance and services,thereby allowing such organizations to improve inadequate services and address any shortcomings.According to the literature,social networks and particularly Twitter are effective platforms for gathering public opinions.Moreover,recent studies have used natural language processing to measure sentiments in text segments collected from Twitter to capture public opinions about various sectors,including healthcare.The present study aimed to analyze Arabic Twitter-based patient experience sentiments and to introduce an Arabic patient experience corpus.The authors collected 12,400 tweets from Arabic patients discussing patient experiences related to healthcare organizations in Saudi Arabia from 1 January 2008 to 29 January 2022.The tweets were labeled according to sentiment(positive or negative)and sector(public or private),and thereby the Hospital Patient Experiences in Saudi Arabia(HoPE-SA)dataset was produced.A simple statistical analysis was conducted to examine differences in patient views of healthcare sectors.The authors trained five models to distinguish sentiments in tweets automatically with the following schemes:a transformer-based model fine-tuned with deep learning architecture and a transformer-based model fine-tuned with simple architecture,using two different transformer-based embeddings based on Bidirectional Encoder Representations from Transformers(BERT),Multi-dialect Arabic BERT(MAR-BERT),and multilingual BERT(mBERT),as well as a pretrained word2vec model with a support vector machine classifier.This is the first study to investigate the use of a bidirectional long short-term memory layer followed by a feedforward neural network for the fine-tuning of MARBERT.The deep-learning fine-tuned MARBERT-based model—the authors’best-performing model—achieved accuracy,micro-F1,and macro-F1 scores of 98.71%,98.73%,and 98.63%,respectively. 展开更多
关键词 Sentiment analysis patient experience healthcare TWITTER MARBERT bidirectional long short-term memory support vector machine transformer-based learning deep learning
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Applying English Idiomatic Expressions to Classify Deep Sentiments in COVID-19 Tweets
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作者 Bashar Tahayna Ramesh Kumar Ayyasamy 《Computer Systems Science & Engineering》 SCIE EI 2023年第10期37-54,共18页
Millions of people are connecting and exchanging information on social media platforms,where interpersonal interactions are constantly being shared.However,due to inaccurate or misleading information about the COVID-1... Millions of people are connecting and exchanging information on social media platforms,where interpersonal interactions are constantly being shared.However,due to inaccurate or misleading information about the COVID-19 pandemic,social media platforms became the scene of tense debates between believers and doubters.Healthcare professionals and public health agencies also use social media to inform the public about COVID-19 news and updates.However,they occasionally have trouble managing massive pandemic-related rumors and frauds.One reason is that people share and engage,regardless of the information source,by assuming the content is unquestionably true.On Twitter,users use words and phrases literally to convey their views or opinion.However,other users choose to utilize idioms or proverbs that are implicit and indirect to make a stronger impression on the audience or perhaps to catch their attention.Idioms and proverbs are figurative expressions with a thematically coherent totality that cannot understand literally.Despite more than 10%of tweets containing idioms or slang,most sentiment analysis research focuses on the accuracy enhancement of various classification algorithms.However,little attention would decipher the hidden sentiments of the expressed idioms in tweets.This paper proposes a novel data expansion strategy for categorizing tweets concerning COVID-19.The following are the benefits of the suggested method:1)no transformer fine-tuning is necessary,2)the technique solves the fundamental challenge of the manual data labeling process by automating the construction and annotation of the sentiment lexicon,3)the method minimizes the error rate in annotating the lexicon,and drastically improves the tweet sentiment classification’s accuracy performance. 展开更多
关键词 Sentiment analysis idiomatic lexicon BERT COVID-19 deep learning
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Do Media Sentiments Reflect Economic Indices?
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作者 Paul Hofmarcher Stefan Theugl Kurt Homik 《Chinese Business Review》 2011年第7期487-492,共6页
Forecasting economic indices on the basis of information extracted from text documents, like newspaper articles is an attractive idea. With the help of text mining techniques, in particular sentiment analysis, we eval... Forecasting economic indices on the basis of information extracted from text documents, like newspaper articles is an attractive idea. With the help of text mining techniques, in particular sentiment analysis, we evaluate the tone of individual New York Times (NYT) articles and compare our results to the Chicago Fed National Activity Index (CFNAI). In this paper, we present a simple, intuitive framework to derive sentiment scores from text documents In particular articles are tagged based on terms and their connotated sentiment. Subsequently, we forecast the CFNAI movements via support vector machines (SVM) trained on a subset of the observed sentiment scores. We apply our model into two different data sets, the whole NYT articles and the articles categorized as NYT business news. On both data sets, we applied a simple performance measure to evaluate forecasting accuracy of the CFNAI 展开更多
关键词 text mining sentiment analysis support vector machines (SVM) forecasting
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Machine Learning Approaches for Classifying the Distribution of Covid-19 Sentiments
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作者 M. Kuyo S. Mwalili E. Okang’o 《Open Journal of Statistics》 2021年第5期620-632,共13页
Previously, rapid disease detection and prevention was difficult. This is because disease modeling and prediction was dependent on a manually obtained dataset that includes use of survey. With the increased use of soc... Previously, rapid disease detection and prevention was difficult. This is because disease modeling and prediction was dependent on a manually obtained dataset that includes use of survey. With the increased use of social media platforms like Twitter, Facebook, Instagram, etc., data mining and sentiment analysis can help avoid diseases. Sentiment analysis is a powerful tool for analyzing people’s perceptions, emotions, value assessments, attitudes, and feelings as expressed in texts. The purpose of this research is to use machine learning techniques to classify and predict the spatial distribution of positive and negative sentiments of Covid-19 pandemic. This study research has employed machine learning to classify spatial distribution of Covid-19 <span style="font-family:Verdana;">twitter sentiments as positive or negative. The data for this study were geo-tagged</span><span style="font-family:Verdana;"> tweets concerning COVID-19 which were live streamed using streamR package. The key terms used for streaming the data were</span><span style="font-family:Verdana;">:</span><span style="font-family:Verdana;"> Corona, Covid-19, sanitizer, virus, lockdown, quarantine, and social distance. The classification used Naive Bayes algorithms with ngram approaches. N-Gram model is a probabilistic language model used to predict next item in a sequence in the form (n</span><span style="font-family:;" "=""> <span style="font-family:Verdana;">-</span></span><span style="font-family:;" "=""> </span><span style="font-family:Verdana;">1) order Markov. It relies on the Markov assumption—the probability of a word depends only on the previous word without looking too far into the past. The steps followed in this research include</span><span style="font-family:Verdana;">: </span><span style="font-family:;" "=""><span style="font-family:Verdana;">cleaning and preprocessing the data, text tokenization using n-gram </span><i><span style="font-family:Verdana;">i.e.</span></i><span style="font-family:Verdana;"> 1-gram, 2-gram, and 3-gram, tweets were converted or weighted into a matrix of numeric vectors using Term Frequency Inverse-Document. Also, data were divided 80:20 between train and test data. A confusion matrix was utilized to evaluate the classification accuracy, precision, and recall performance of the various algorithms tested. Prediction was done using the best performing Naive Bayes algorithm. The results of this research showed that under Multinomial Naive Bayes, unigram accuracy was 92.02%, bigram accuracy was 97.37%, and trigram accuracy was 94.40%. Unigram had 89.34% accuracy, bigram had 96.80%, and trigram had 94.90% accuracy using Bernoulli Naive Bayes. Unigram accuracy was 90.43%, bigram accuracy was 95.67%, and trigram accuracy was 92.89% using Gaussian Naive Bayes. Bigram tokenization outperformed unigram and trigram tokenization. Bigram Multinomial Naive Bayes was used to predict test data since it was the most accurate in classifying train data. Prediction </span><span style="font-family:Verdana;">accuracy was 84.92%, precision 85.50%, recall 81.02%, and F1 measure 83.20%</span><span style="font-family:Verdana;">. TF-IDF was employed to increase prediction accuracy, obtaining 87.06%. These were then plotted on a globe map. The study indicates that machine learning can identify patterns and emotions in public tweets, which may then be used to steer targeted intervention programs aimed at limiting disease spread.</span></span> 展开更多
关键词 Machine Learning Sentiment Analysis Natural Language Processing Covid-19 Naive Bayes N-GRAM
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Comparative Analysis Using Machine Learning Techniques for Fine Grain Sentiments
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作者 Zeeshan Ahmad Waqas Haider Bangyal +2 位作者 Kashif Nisar Muhammad Reazul Haque M.Adil Khan 《Journal on Artificial Intelligence》 2022年第1期49-60,共12页
Huge amount of data is being produced every second for microblogs,different content sharing sites,and social networking.Sentimental classification is a tool that is frequently used to identify underlying opinions and ... Huge amount of data is being produced every second for microblogs,different content sharing sites,and social networking.Sentimental classification is a tool that is frequently used to identify underlying opinions and sentiments present in the text and classifying them.It is widely used for social media platforms to find user’s sentiments about a particular topic or product.Capturing,assembling,and analyzing sentiments has been challenge for researchers.To handle these challenges,we present a comparative sentiment analysis study in which we used the fine-grained Stanford Sentiment Treebank(SST)dataset,based on 215,154 exclusive texts of different lengths that are manually labeled.We present comparative sentiment analysis to solve the fine-grained sentiment classification problem.The proposed approach takes start by pre-processing the data and then apply eight machine-learning algorithms for the sentiment classification namely Support Vector Machine(SVM),Logistic Regression(LR),Neural Networks(NN),Random Forest(RF),Decision Tree(DT),K-Nearest Neighbor(KNN),Adaboost and Naïve Bayes(NB).On the basis of results obtained the accuracy,precision,recall and F1-score were calculated to draw a comparison between the classification approaches being used. 展开更多
关键词 Machine learning neural network sentiment analysis system support vector machine
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Predicting the Hot Topics with User Sentiments
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作者 Qi Guo Jinhao Shi +1 位作者 Yong Liu Xiaokun Li 《国际计算机前沿大会会议论文集》 2019年第1期451-453,共3页
Social applications such as Weibo have provided a quick platform for information propagation, which have led to an explosive propagation for hot topic. User sentiments about propagation information play an important r... Social applications such as Weibo have provided a quick platform for information propagation, which have led to an explosive propagation for hot topic. User sentiments about propagation information play an important role in propagation speed, which receive more and more attention from data mining field. In this paper, we propose an sentiment-based hot topics prediction model called PHT-US. PHT-US firstly classifies a large amount of text data in Weibo into different topics, then converts user sentiments and time factors into embedding vectors that are input into recurrent neural networks (both LSTM and GRU), and predicts whether the target topic could be a hot spot. Experiments on Sina Weibo show that PHT-US can effectively predict the hot topics in the future. Social applications such as Weibo provide a platform for quick information propagation, which leads to an explosive propagation for hot topics. User sentiments about propagation information play an important role in propagation speed, and thus receive more attention from data mining field. In this paper, a sentiment-based hot topics prediction model called PHT-US is proposed. Firstly a large amount of text data in Weibo was classified into different topics, and then user sentiments and time factors were converted into embedding vectors that are input into recurrent neural networks (both LSTM and GRU), and future hotspots were predicted. Experiments on Sina Weibo show that PHT-US can effectively predict hot topics in the future. 展开更多
关键词 SOCIAL NETWORKS USER SENTIMENT Hot TOPICS RECURRENT neural NETWORKS
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Text-Image Feature Fine-Grained Learning for Joint Multimodal Aspect-Based Sentiment Analysis
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作者 Tianzhi Zhang Gang Zhou +4 位作者 Shuang Zhang Shunhang Li Yepeng Sun Qiankun Pi Shuo Liu 《Computers, Materials & Continua》 SCIE EI 2025年第1期279-305,共27页
Joint Multimodal Aspect-based Sentiment Analysis(JMASA)is a significant task in the research of multimodal fine-grained sentiment analysis,which combines two subtasks:Multimodal Aspect Term Extraction(MATE)and Multimo... Joint Multimodal Aspect-based Sentiment Analysis(JMASA)is a significant task in the research of multimodal fine-grained sentiment analysis,which combines two subtasks:Multimodal Aspect Term Extraction(MATE)and Multimodal Aspect-oriented Sentiment Classification(MASC).Currently,most existing models for JMASA only perform text and image feature encoding from a basic level,but often neglect the in-depth analysis of unimodal intrinsic features,which may lead to the low accuracy of aspect term extraction and the poor ability of sentiment prediction due to the insufficient learning of intra-modal features.Given this problem,we propose a Text-Image Feature Fine-grained Learning(TIFFL)model for JMASA.First,we construct an enhanced adjacency matrix of word dependencies and adopt graph convolutional network to learn the syntactic structure features for text,which addresses the context interference problem of identifying different aspect terms.Then,the adjective-noun pairs extracted from image are introduced to enable the semantic representation of visual features more intuitive,which addresses the ambiguous semantic extraction problem during image feature learning.Thereby,the model performance of aspect term extraction and sentiment polarity prediction can be further optimized and enhanced.Experiments on two Twitter benchmark datasets demonstrate that TIFFL achieves competitive results for JMASA,MATE and MASC,thus validating the effectiveness of our proposed methods. 展开更多
关键词 Multimodal sentiment analysis aspect-based sentiment analysis feature fine-grained learning graph convolutional network adjective-noun pairs
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Optimizing Airline Review Sentiment Analysis:A Comparative Analysis of LLaMA and BERT Models through Fine-Tuning and Few-Shot Learning
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作者 Konstantinos I.Roumeliotis Nikolaos D.Tselikas Dimitrios K.Nasiopoulos 《Computers, Materials & Continua》 2025年第2期2769-2792,共24页
In the rapidly evolving landscape of natural language processing(NLP)and sentiment analysis,improving the accuracy and efficiency of sentiment classification models is crucial.This paper investigates the performance o... In the rapidly evolving landscape of natural language processing(NLP)and sentiment analysis,improving the accuracy and efficiency of sentiment classification models is crucial.This paper investigates the performance of two advanced models,the Large Language Model(LLM)LLaMA model and NLP BERT model,in the context of airline review sentiment analysis.Through fine-tuning,domain adaptation,and the application of few-shot learning,the study addresses the subtleties of sentiment expressions in airline-related text data.Employing predictive modeling and comparative analysis,the research evaluates the effectiveness of Large Language Model Meta AI(LLaMA)and Bidirectional Encoder Representations from Transformers(BERT)in capturing sentiment intricacies.Fine-tuning,including domain adaptation,enhances the models'performance in sentiment classification tasks.Additionally,the study explores the potential of few-shot learning to improve model generalization using minimal annotated data for targeted sentiment analysis.By conducting experiments on a diverse airline review dataset,the research quantifies the impact of fine-tuning,domain adaptation,and few-shot learning on model performance,providing valuable insights for industries aiming to predict recommendations and enhance customer satisfaction through a deeper understanding of sentiment in user-generated content(UGC).This research contributes to refining sentiment analysis models,ultimately fostering improved customer satisfaction in the airline industry. 展开更多
关键词 Sentiment classification review sentiment analysis user-generated content domain adaptation customer satisfaction LLaMA model BERT model airline reviews LLM classification fine-tuning
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Correlation Analysis Between Investor Sentiment and Stock Price Fluctuations Based on Large Language Models
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作者 Guohua Ren Ziyu Luo +1 位作者 Naiwen Zhang Yichen Yang 《Journal of Electronic Research and Application》 2025年第5期30-37,共8页
The efficient market hypothesis in traditional financial theory struggles to explain the short-term irrational fluctuations in the A-share market,where investor sentiment fluctuations often serve as the core driver of... The efficient market hypothesis in traditional financial theory struggles to explain the short-term irrational fluctuations in the A-share market,where investor sentiment fluctuations often serve as the core driver of abnormal stock price movements.Traditional sentiment measurement methods suffer from limitations such as lag,high misjudgment rates,and the inability to distinguish confounding factors.To more accurately explore the dynamic correlation between investor sentiment and stock price fluctuations,this paper proposes a sentiment analysis framework based on large language models(LLMs).By constructing continuous sentiment scoring factors and integrating them with a long short-term memory(LSTM)deep learning model,we analyze the correlation between investor sentiment and stock price fluctuations.Empirical results indicate that sentiment factors based on large language models can generate an annualized excess return of 9.3%in the CSI 500 index domain.The LSTM stock price prediction model incorporating sentiment features achieves a mean absolute percentage error(MAPE)as low as 2.72%,significantly outperforming traditional models.Through this analysis,we aim to provide quantitative references for optimizing investment decisions and preventing market risks. 展开更多
关键词 Large language model Investor sentiment Stock return prediction Sentiment analysis LSTM
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Aspect-Level Sentiment Analysis of Bi-Graph Convolutional Networks Based on Enhanced Syntactic Structural Information
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作者 Junpeng Hu Yegang Li 《Journal of Computer and Communications》 2025年第1期72-89,共18页
Aspect-oriented sentiment analysis is a meticulous sentiment analysis task that aims to analyse the sentiment polarity of specific aspects. Most of the current research builds graph convolutional networks based on dep... Aspect-oriented sentiment analysis is a meticulous sentiment analysis task that aims to analyse the sentiment polarity of specific aspects. Most of the current research builds graph convolutional networks based on dependent syntactic trees, which improves the classification performance of the models to some extent. However, the technical limitations of dependent syntactic trees can introduce considerable noise into the model. Meanwhile, it is difficult for a single graph convolutional network to aggregate both semantic and syntactic structural information of nodes, which affects the final sentence classification. To cope with the above problems, this paper proposes a bi-channel graph convolutional network model. The model introduces a phrase structure tree and transforms it into a hierarchical phrase matrix. The adjacency matrix of the dependent syntactic tree and the hierarchical phrase matrix are combined as the initial matrix of the graph convolutional network to enhance the syntactic information. The semantic information feature representations of the sentences are obtained by the graph convolutional network with a multi-head attention mechanism and fused to achieve complementary learning of dual-channel features. Experimental results show that the model performs well and improves the accuracy of sentiment classification on three public benchmark datasets, namely Rest14, Lap14 and Twitter. 展开更多
关键词 Aspect-Level Sentiment Analysis Sentiment Knowledge Multi-Head Attention Mechanism Graph Convolutional Networks
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Deep Learning-Based NLP Framework for Public Sentiment Analysis on Green Consumption:Evidence from Social Media
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作者 Luyu Ma Xiu Cheng +2 位作者 Zongyan Xing Yue Wu Weiwei Jiang 《Computers, Materials & Continua》 2025年第11期3921-3943,共23页
Green consumption(GC)are crucial for achieving the SustainableDevelopmentGoals(SDGs).However,few studies have explored public attitudes toward GC using social media data,missing potential public concerns captured thro... Green consumption(GC)are crucial for achieving the SustainableDevelopmentGoals(SDGs).However,few studies have explored public attitudes toward GC using social media data,missing potential public concerns captured through big data.To address this gap,this study collects and analyzes public attention toward GC using web crawler technology.Based on the data from Sina Weibo,we applied RoBERTa,an advanced NLP model based on transformer architecture,to conduct fine-grained sentiment analysis of the public’s attention,attitudes and hot topics on GC,demonstrating the potential of deep learning methods in capturing dynamic and contextual emotional shifts across time and regions.Among the sample(N=188,509),53.91% expressed a positive attitude,with variation across different times and regions.Temporally,public interest in GC has shown an annual growth rate of 30.23%,gradually shifting fromfulfilling basic needs to prioritizing entertainment consumption.Spatially,GC is most prevalent in the southeast coastal regions of China,with Beijing ranking first across five evaluated domains.Individuals and government-affiliated accounts play a key role in public discussions on social networks,accounting for 45.89% and 30.01% of user reviews,respectively.A significant positive correlation exists between economic development and public attention to GC,as indicated by a Pearson correlation coefficient of 0.55.Companies,in particular,exhibit cautious behavior in the early stages of green product adoption,prioritizing profitability before making substantial investments.These findings provide valuable insights into the evolving public perception of GC,contributing to the development of more effective environmental policies in China. 展开更多
关键词 Green-consumption RoBERTa web crawler text sentiment analysis STAKEHOLDER
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X-OODM:Leveraging Explainable Object-Oriented Design Methodology for Multi-Domain Sentiment Analysis
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作者 Abqa Javed Muhammad Shoaib +2 位作者 Abdul Jaleel Mohamed Deriche Sharjeel Nawaz 《Computers, Materials & Continua》 2025年第3期4977-4994,共18页
Incorporation of explainability features in the decision-making web-based systems is considered a primary concern to enhance accountability,transparency,and trust in the community.Multi-domain Sentiment Analysis is a ... Incorporation of explainability features in the decision-making web-based systems is considered a primary concern to enhance accountability,transparency,and trust in the community.Multi-domain Sentiment Analysis is a significant web-based system where the explainability feature is essential for achieving user satisfaction.Conventional design methodologies such as object-oriented design methodology(OODM)have been proposed for web-based application development,which facilitates code reuse,quantification,and security at the design level.However,OODM did not provide the feature of explainability in web-based decision-making systems.X-OODM modifies the OODM with added explainable models to introduce the explainability feature for such systems.This research introduces an explainable model leveraging X-OODM for designing transparent applications for multidomain sentiment analysis.The proposed design is evaluated using the design quality metrics defined for the evaluation of the X-OODM explainable model under user context.The design quality metrics,transferability,simulatability,informativeness,and decomposability were introduced one after another over time to the evaluation of the X-OODM user context.Auxiliary metrics of accessibility and algorithmic transparency were added to increase the degree of explainability for the design.The study results reveal that introducing such explainability parameters with X-OODM appropriately increases system transparency,trustworthiness,and user understanding.The experimental results validate the enhancement of decision-making for multi-domain sentiment analysis with integration at the design level of explainability.Future work can be built in this direction by extending this work to apply the proposed X-OODM framework over different datasets and sentiment analysis applications to further scrutinize its effectiveness in real-world scenarios. 展开更多
关键词 Measurable explainable web-based application object-oriented design sentiment analysis MULTI-DOMAIN
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