Hybrid sentiment classification on twitter aspect-based sentiment analysis

Social media sites and applications, including Facebook, YouTube, Twitter and blogs, have become major social media attractions today. The huge amount of information from this medium has become an attractive resource for organisations to monitor the opinions of users, and therefore, it is receiving a lot of attention in the field of sentiment analysis. Early work on sentiment analysis approached this problem at a document-level, where the overall sentiment was identified, rather than the details of the sentiment. This research took into account the use of an aspect-based sentiment analysis on Twitter in order to perform a finer-grained analysis. A new hybrid sentiment classification for Twitter is proposed by embedding a feature selection method. A comparison of the accuracy of the classification by the principal component analysis (PCA), latent semantic analysis (LSA), and random projection (RP) feature selection methods are presented in this paper. Furthermore, the hybrid sentiment classification was validated using Twitter datasets to represent different domains, and the evaluation with different classification algorithms also demonstrated that the new hybrid approach produced meaningful results. The implementations showed that the new hybrid sentiment classification was able to improve the accuracy performance from the existing baseline sentiment classification methods by 76.55, 71.62 and 74.24%, respectively.     

DT-FNN based effective hybrid classification scheme for twitter sentiment analysis

Multimedia Tools and Applications - Sentiment analysis refers to the interpretation and computational study of emotions, opinions and appraisals within the text data using text analysis methods. A...     

A case study of Spanish text transformations for twitter sentiment analysis

Sentiment analysis is a text mining task that determines the polarity of a given text, i.e., its positiveness or negativeness. Recently, it has received a lot of attention given the interest in opinion mining in micro-blogging platforms. These new forms of textual expressions present new challenges to analyze text because of the use of slang, orthographic and grammatical errors, among others. Along with these challenges, a practical sentiment classifier should be able to handle efficiently large workloads.The aim of this research is to identify in a large set of combinations which text transformations (lemmatization, stemming, entity removal, among others), tokenizers (e.g., word n-grams), and token-weighting schemes make the most impact on the accuracy of a classifier (Support Vector Machine) trained on two Spanish datasets. The methodology used is to exhaustively analyze all combinations of text transformations and their respective parameters to find out what common characteristics the best performing classifiers have. Furthermore, we introduce a novel approach based on the combination of word-based n-grams and character-based q-grams. The results show that this novel combination of words and characters produces a classifier that outperforms the traditional word-based combination by 11.17% and 5.62% on the INEGI and TASS’15 dataset, respectively.     

An optimal deep learning-based LSTM for stock price prediction using twitter sentiment analysis

Applied Intelligence - Stock Price Prediction is one of the hot research topics in financial engineering, influenced by economic, social, and political factors. In the present stock market, the...     

Sentiment analysis of multimodal twitter data

Multimedia Tools and Applications - Text-driven sentiment analysis has been widely studied in the past decade, on both random and benchmark textual Twitter datasets. Few pertinent studies have also...     

Iteration-based naive Bayes sentiment classification of microblog multimedia posts considering emoticon attributes

Microblog (such as Weibo) is an integrated social platform of vital importance in the internet age. Because of its diversity, subjectivity and timeliness, microblog is popular among public. In order to perform sentiment classification on microblog posts and overcome the limitation of text information, a fine-grained sentiment analysis method is proposed, in which emoticon attributes are considered. Firstly, the microblog texts are pre-processed to remove some stop words and noise information such as links. Then the data is matched in the sentiment lexicon, and when the first matching succeeds, the second matching is performed in the emoticon dictionary. The emoticons in the emoticon dictionary are transformed into vector form. Through these matching, the emotional features are vectorized and other text features are considered. Finally, the iterative-based naive Bayesian classification method is used for sentiment classification. The experiment results show that emoticons have obvious effect on facilitating the sentiment classification of microblog posts, and the proposed sentiment classification method achieved better than average results in term of classification accuracy compared with state-of-art techniques.

     

Generate domain-specific sentiment lexicon for review sentiment analysis

Multimedia Tools and Applications - Lexicon-based approaches for review sentiment analysis have attracted significant attention in recent years. Lots of sentiment lexicon generation methods have...     

基于时间序列模型和情感分析的情感趋势预测

为解决传统情感分析方法无法对公众未来情感走势变化有效预测的问题,提出一种将时间序列模型与情感分析相结合的情感趋势预测方法.采用深度学习模型对股市论坛实时评论信息进行情感分类,统计固定时间单位的情感值,构建情感值时间序列,提出ARIMA-GARCH时间序列模型,对情感值时间序列进行建模分析,预测投资者的情感走势.实验结果表明,该方法对于情感趋势的预测结果合理,误差较小.同时,发现投资者情感趋势与股市涨跌幅走势相似,为投资决策提供了参考.     

Automatic detection of depression symptoms in twitter using multimodal analysis

The Journal of Supercomputing - Depression is the most prevalent mental disorder that can lead to suicide. Due to the tendency of people to share their thoughts on social platforms, social data...     

Riding the tide of sentiment change: sentiment analysis with evolving online reviews

The last decade has seen a rapid growth in the volume of online reviews. A great deal of research has been done in the area of opinion mining, aiming at analyzing the sentiments expressed in those reviews towards products and services. Most of the such work focuses on mining opinions from a collection of reviews posted during a particular period, and does not consider the change in sentiments when the collection of reviews evolve over time. In this paper, we fill in this gap, and study the problem of developing adaptive sentiment analysis models for online reviews. Given the success of latent semantic modeling techniques, we propose two adaptive methods to capture the evolving sentiments. As a case study, we also investigate the possibility of using the extracted adaptive patterns for sales prediction. Our proposal is evaluated on an IMDB dataset consisting of reviews of selected movies and their box office revenues. Experimental results show that the adaptive methods can capture sentiment changes arising from newly available reviews, which helps greatly improve the prediction accuracy.     

A semi-supervised approach to sentiment analysis using revised sentiment strength based on SentiWordNet

Emergence of MapReduce (MR) framework for scaling data mining and machine learning algorithms provides for Volume, while handling of Variety and Velocity needs to be skilfully crafted in algorithms. So far, scalable clustering algorithms have focused solely on Volume, taking advantage of the MR framework. In this paper we present a MapReduce algorithm—data aware scalable clustering (DASC), which is capable of handling the 3 Vs of big data by virtue of being (i) single scan and distributed to handle Volume, (ii) incremental to cope with Velocity and (iii) versatile in handling numeric and categorical data to accommodate Variety. DASC algorithm incrementally processes infinitely growing data set stored on distributed file system and delivers quality clustering scheme while ensuring recency of patterns. The up-to-date synopsis is preserved by the algorithm for the data seen so far. Each new data increment is processed and merged with the synopsis. Since the synopsis itself may grow very large in size, the algorithm stores it as a file. This makes DASC algorithm truly scalable. Exclusive clusters are obtained on demand by applying connected component analysis (CCA) algorithm over the synopsis. CCA presents subtle roadblock to effective parallelism during clustering. This problem is overcome by accomplishing the task in two stages. In the first stage, hyperclusters are identified based on prevailing data characteristics. The second stage utilizes this knowledge to determine the degree of parallelism, thereby making DASC data aware. Hyperclusters are distributed over the available compute nodes for discovering embedded clusters in parallel. Staged approach for clustering yields dual advantage of improved parallelism and desired complexity in \(\mathcal {MRC}^0\) class. DASC algorithm is empirically compared with incremental Kmeans and Scalable Kmeans++ algorithms. Experimentation on real-world and synthetic data with approximately 1.2 billion data points demonstrates effectiveness of DASC algorithm. Empirical observations of DASC execution are in consonance with the theoretical analysis with respect to stability in resources utilization and execution time.     

Word polarity attention in sentiment analysis

Neural network approaches are end-to-end learning approaches without well-designed training data and achieve high performance in sentiment analysis. Because of complex architecture of a neural network, it is difficult to analyze how they work and find their bottleneck to improve their performance. To remedy it, we propose neural sentiment analysis with attention mechanism. Using attention mechanism, we can find important words to determine sentiment polarity of a sentence. Moreover, we can understand why the sentiment analysis could not classify sentiment polarity correctly. We compare our method with neural sentiment analysis without attention mechanism over TSUKUBA corpus and Stanford Sentiment Treebank (SST). Experimental results show that our method is interpretable and can achieve higher precision.     

基于本体的知识管理研究热点分析

通过分析2003—2009年149篇关于基于本体知识管理研究的国内学术文献,该文对目前基于本体的知识管理研究角度和趋势进行了归纳总结,总结出目前基于本体的知识管理理论的研究热点和不足,对将来的基于本体的知识管理理论研究有一定的借鉴意义。     

基于本体的知识管理研究热点分析

通过分析2003-2009年149篇关于基于本体知识管理研究的国内学术文献,该文对目前基于本体的知识管理研究角度和趋势进行了归纳总结,总结出目前基于本体的知识管理理论的研究热点和不足,对将来的基于本体的知识管理理论研究有一定的借鉴意义。     

Improving sentiment analysis efficacy through feature synchronization

Multimedia Tools and Applications - Social media platforms are becoming a rich source of valuable information through sharing and publishing user generated reviews and comments. The identification...     

Efficient feature selection techniques for sentiment analysis

Multimedia Tools and Applications - Sentiment analysis is a domain of study that focuses on identifying and classifying the ideas expressed in the form of text into positive, negative and neutral...     

文本情感分析方法研究综述

文本情感是信息挖掘的一个新兴领域,近年受到管理学等相关领域的广泛关注。目前,文本情感分析使用的方法主要有情感词典方法和机器学习方法。由于文本情感分析的结果对优化政府、企业以及消费者决策具有重大意义,以文本情感分析的方法为视角,对情感词典的方法、有监督的机器学习方法和弱监督的深度学习方法以及其他方法的相关文献进行了梳理并做出评述。此外,指出虽然文本情感分析领域的学者基于情感词典和有监督的机器学习方法已提出许多情感分析模型,但准确率和效率普遍不高,进一步的研究重点应在于使用深度学习的方法处理文本情感,并提出未来的研究方向。