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Topic Modeling as a Tool to Gauge Political Sentiments from Twitter Feeds 主题建模作为一种工具来衡量Twitter feed中的政治情绪
Pub Date : 2020-04-01 DOI: 10.4018/ijncr.2020040102
D. Sarddar, Raktima Dey, R. Bose, Sandip Roy
As ubiquitous as it is, the Internet has spawned a slew of products that have forever changed the way one thinks of society and politics. This article proposes a model to predict chances of a political party winning based on data collected from Twitter microblogging website, because it is the most popular microblogging platform in the world. Using unsupervised topic modeling and the NRC Emotion Lexicon, the authors demonstrate how it is possible to predict results by analyzing eight types of emotions expressed by users on Twitter. To prove the results based on empirical analysis, the authors examine the Twitter messages posted during 14th Gujarat Legislative Assembly election, 2017. Implementing two unsupervised clustering methods of K-means and Latent Dirichlet Allocation, this research shows how the proposed model is able to examine and summarize observations based on underlying semantic structures of messages posted on Twitter. These two well-known unsupervised clustering methods provide a firm base for the proposed model to enable streamlining of decision-making processes objectively.
互联网无处不在,它催生了大量的产品,这些产品永远地改变了人们对社会和政治的看法。由于Twitter是世界上最受欢迎的微博平台,本文基于Twitter微博网站收集的数据,提出了一个预测政党获胜几率的模型。使用无监督主题建模和NRC情感词典,作者展示了如何通过分析推特用户表达的八种情感来预测结果。为了证明基于实证分析的结果,作者研究了2017年第14届古吉拉特邦立法议会选举期间发布的Twitter消息。本研究实现了K-means和Latent Dirichlet Allocation两种无监督聚类方法,展示了所提出的模型如何能够基于Twitter上发布的消息的底层语义结构检查和总结观察结果。这两种著名的无监督聚类方法为本文提出的模型客观地简化决策过程提供了坚实的基础。
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引用次数: 10
Image Denoising Using Novel Social Grouping Optimization Algorithm with Transform Domain Technique 基于变换域技术的新型社会分组优化算法图像去噪
Pub Date : 2019-10-01 DOI: 10.4018/ijncr.2019100103
B. Sekhar, P V G D Prasad Reddy, S. Venkataramana, V. Chakravarthy, P Satish Rama Chowdary
In recent days, image communication has evolved in many fields like medicine, entertainment, gaming, mail, etc. Thus, it is an immediate need to denoise the received image because noise that is added in the channel during communication alters or deteriorates information contained in the image. Any image processing techniques concerned with image denoising or image noise removal has to be started with the spatial domain and end with the transform domain. A lot of research was carried out in the spatial domain by modifying the performance of different image filters such as mean filters, median filters, Laplacian filters, etc. Recently much research was carried out in Transform techniques under the transform domain, with evolutionary computing tools (ECT). ECT has proven to be dominant when compared with traditional denoising techniques in combination with wavelets in the transform domain. In this article, the authors applied a novel ECT such as SGOA on the denoising problem for denoising monochrome as well as color images and performance for denoising was evaluated using several image quality metrics.
近年来,图像传播在医学、娱乐、游戏、邮件等许多领域得到了发展。因此,立即需要对接收到的图像进行降噪,因为在通信期间在信道中添加的噪声会改变或恶化图像中包含的信息。任何涉及图像去噪或去噪的图像处理技术都必须从空间域开始,以变换域结束。通过对均值滤波器、中值滤波器、拉普拉斯滤波器等不同图像滤波器的性能进行改进,在空间域中进行了大量的研究。近年来,利用进化计算工具对变换域下的变换技术进行了大量的研究。与传统的结合小波去噪技术相比,ECT在变换域具有优势。在本文中,作者将SGOA等新颖的ECT应用于单色和彩色图像的去噪问题,并使用几个图像质量指标对去噪性能进行了评估。
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引用次数: 2
Automatic Texture Based Classification of the Dynamics of One-Dimensional Binary Cellular Automata 基于纹理的一维二元元胞自动机动态自动分类
Pub Date : 2019-10-01 DOI: 10.4018/ijncr.2019100104
Marcelo Arbori Nogueira, P. D. Oliveira
Cellular automata present great variability in their temporal evolutions due to the number of rules and initial configurations. The possibility of automatically classifying its dynamic behavior would be of great value when studying properties of its dynamics. By counting on elementary cellular automata, and considering its temporal evolution as binary images, the authors created a texture descriptor of the images - based on the neighborhood configurations of the cells in temporal evolutions - so that it could be associated to each dynamic behavior class, following the scheme of Wolfram's classic classification. It was then possible to predict the class of rules of a temporal evolution of an elementary rule in a more effective way than others in the literature in terms of precision and computational cost. By applying the classifier to the larger neighborhood space containing 4 cells, accuracy decreased to just over 70%. However, the classifier is still able to provide some information about the dynamics of an unknown larger space with reduced computational cost.
元胞自动机由于规则和初始配置的数量而在时间演化中表现出很大的可变性。对其动态行为进行自动分类的可能性对其动力学性质的研究具有重要的价值。通过计算基本元胞自动机,并考虑其时间演化为二值图像,作者创建了图像的纹理描述符-基于细胞在时间演化中的邻域配置-因此它可以与每个动态行为类相关联,遵循Wolfram的经典分类方案。在精度和计算成本方面,用一种比文献中其他方法更有效的方法来预测基本规则的时间演化的规则类是可能的。通过将分类器应用于包含4个单元格的较大邻域空间,准确率下降到刚刚超过70%。然而,分类器仍然能够以更低的计算成本提供一些关于未知更大空间的动态信息。
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引用次数: 0
A Novel Method for High Capacity Reversible Data Hiding Scheme Using Difference Expansion 一种基于差分展开的大容量可逆数据隐藏新方法
Pub Date : 2019-10-01 DOI: 10.4018/ijncr.2019100102
Subhadip Mukherjee, Biswapati Jana
Data hiding techniques are very significant in the research area of information security. In this article, the authors propose a new reversible data hiding (RDH) scheme using difference expansion. At first, the original image is partitioned into 3 × 3 pixel blocks, then marked Type-one and Type-two pixels based on their coordinate values. After that, the authors find correlated pixels by computing correlation coefficients and the median of Type-one pixels. Next, secret data bits are embedded within Type-two pixels based on correlated pixels and Type-one pixels based on the stego Type-two pixels. The data extraction process successfully extracts secret data as well as recovers the cover image. The authors observed the effects of the proposed method by performing experiments on some standard cover images and found significantly better result in terms of data hiding capacity compared with existing data hiding schemes.
数据隐藏技术在信息安全研究领域中占有重要地位。本文提出了一种利用差分展开的可逆数据隐藏(RDH)方案。首先将原始图像划分为3 × 3像素块,然后根据像素块的坐标值标记出第一类和第二类像素。然后,通过计算相关系数和一类像素的中位数找到相关像素。接下来,将秘密数据位嵌入基于相关像素的二类像素和基于隐式二类像素的一类像素中。数据提取过程成功提取了秘密数据,恢复了封面图像。作者通过对一些标准封面图像的实验,观察了该方法的效果,发现与现有的数据隐藏方案相比,该方法的数据隐藏能力明显提高。
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引用次数: 11
Minimization of Energy Hole in Under Water Sensor Networks (UWSNs) 水下传感器网络能量空洞最小化方法研究
Pub Date : 2019-10-01 DOI: 10.4018/ijncr.2019100101
Satyabrata Das, Niva Tripathy
The major difference between underwater sensor networks (UWSNs) and terrestrial sensor networks is the use of acoustic signals as a communication medium rather than radio signals. The main reason behind this is the poor performance of radio signals in water. UWSNs have some distinct characteristics which makes them more research-oriented which is the large propagation delay, high error rate, low bandwidth, and limited energy. UWSNs have their application in the field of oceanographic, data collection, pollution monitoring, off-shore exploration, disaster prevention, assisted navigation, tactical surveillance, etc. In UWSNs the main advantages of protocol design are to a reliable and effective data transmission from source to destination. Among those, energy efficiency plays an important role in underwater communication. The main energy sources of UWSNs are batteries which are very difficult to replace frequently. There are two popular underwater protocols that are DBR and EEDBR. DBR is one of the popular routing techniques which don't use the full dimensional location information. In this article the authors use an efficient area localization scheme for UWSNs to minimize the energy hole created. Rather than finding the exact sensor position, this technique will estimate the position of every sensor node within certain area. In addition to that the authors introduced a RF based location finding and multilevel power transmission scheme. Simulation results shows that the proposed scheme produces better result than its counter parts.
水下传感器网络(UWSNs)与地面传感器网络的主要区别在于使用声信号而不是无线电信号作为通信介质。这背后的主要原因是无线电信号在水中表现不佳。UWSNs具有传播延迟大、误差率高、带宽低、能量有限等特点,这使其具有更大的研究价值。uwsn在海洋学、数据采集、污染监测、近海勘探、灾害预防、辅助导航、战术监视等领域有广泛的应用。在uwsn中,协议设计的主要优点是从源到目的的可靠有效的数据传输。其中,能源效率在水下通信中起着重要的作用。UWSNs的主要能量来源是电池,很难经常更换。有两种流行的水下协议是DBR和EEDBR。DBR是一种不使用全维位置信息的路由技术。在本文中,作者使用了一种有效的区域定位方案,以最小化产生的能量洞。该技术不是寻找精确的传感器位置,而是估计特定区域内每个传感器节点的位置。此外,作者还介绍了一种基于射频的定位和多级功率传输方案。仿真结果表明,该方案比其他方案的效果更好。
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引用次数: 3
Framework for Visualization of GeoSpatial Query Processing by Integrating Redis With Spark 集成Redis和Spark的地理空间查询处理可视化框架
Pub Date : 2019-07-01 DOI: 10.4018/IJNCR.2019070101
S. Vasavi, G. V.N.Priyanka, A. Gokhale
Nowadays we are moving towards digitization and making all our devices produce a variety of data, this has paved the way to the emergence of NoSQL databases like Cassandra, MongoDB, and Redis. Big data such as geospatial data allows for geospatial analytics in applications such as tourism, marketing, and rural development. Spark frameworks provide operators storage and processing of distributed data. This article proposes “GeoRediSpark” to integrate Redis with Spark. Redis is a key-value store that uses an in-memory store, hence integrating Redis with Spark can extend the real-time processing of geospatial data. The article investigates storage and retrieval of the Redis built-in geospatial queries and has added two new geospatial operators, GeoWithin and GeoIntersect, to enhance the capabilities of Redis. Hashed indexing is used to improve the processing performance. A comparison on Redis metrics with three benchmark datasets is made. Hashset is used to display geographic data. The output of geospatial queries is visualized to the type of place and the nature of the query using Tableau.
如今,我们正朝着数字化的方向发展,让我们所有的设备都能产生各种各样的数据,这为Cassandra、MongoDB和Redis等NoSQL数据库的出现铺平了道路。地理空间数据等大数据允许在旅游、营销和农村发展等应用中进行地理空间分析。Spark框架为操作员提供分布式数据的存储和处理。本文提出了“GeoRediSpark”来集成Redis和Spark。Redis是一个使用内存存储的键值存储,因此将Redis与Spark集成可以扩展地理空间数据的实时处理。本文研究了Redis内置地理空间查询的存储和检索,并增加了两个新的地理空间操作符,GeoWithin和GeoIntersect,以增强Redis的功能。散列索引用于提高处理性能。对Redis指标与三个基准数据集进行了比较。哈希集用于显示地理数据。使用Tableau将地理空间查询的输出可视化为地点类型和查询的性质。
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引用次数: 3
A Comparative Objective Assessment on Mesh-Based and SVM-Based 3D Reconstruction of MRI Brain 基于网格和svm的MRI脑三维重建的比较客观评价
Pub Date : 2019-07-01 DOI: 10.4018/IJNCR.2019070103
Sushitha Susan Joseph, D. Aju
Three-dimensional reconstruction is the process of acquiring the volumetric information from two dimensions, converting and representing it in three dimensions. The reconstructed images play a vital role in the disease diagnosis, treatment and surgery. Brain surgery is one of the main treatment options following the diagnosis of brain damage. The risk associated with brain surgery is high. Reconstructed brain images help the surgeons to visualize the exact location of tumor, plan and perform the surgical procedures from craniotomy to tumor resection with high precision. This survey provides an overview of the three-dimensional reconstruction techniques in MRI brain and brain tumors. The triangle generation methods and support vector machine methods are briefly described. The advantages and disadvantages of each method is discussed. The comparison reveals that Immune Sphere Shaped Support Vector Machine is the best choice when execution time is considered and triangle mesh generation algorithm is the best when visual quality is considered.
三维重建是指从二维空间获取物体的体积信息,并将其转换成三维空间表示的过程。重建图像在疾病的诊断、治疗和手术中具有重要作用。脑部手术是脑损伤诊断后的主要治疗选择之一。脑部手术的风险很高。重建的脑图像有助于外科医生可视化肿瘤的准确位置,以高精度计划和实施从开颅到肿瘤切除的手术。本文综述了MRI脑和脑肿瘤的三维重建技术。简要介绍了三角生成方法和支持向量机方法。讨论了每种方法的优缺点。比较结果表明,考虑执行时间时,免疫球面支持向量机算法是最佳选择;考虑视觉质量时,三角网格生成算法是最佳选择。
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引用次数: 2
Identifying Subtypes of Cancer Using Genomic Data by Applying Data Mining Techniques 应用数据挖掘技术利用基因组数据识别癌症亚型
Pub Date : 2019-07-01 DOI: 10.4018/IJNCR.2019070104
Tejal Upadhyay, Samir B. Patel
This article is about the study of genomics structures and identifying cancer types from it. It divides into six parts. The first part is about the introduction of cancer, types of cancers, how cancer arises, etc. The second part is about the genomic study and how cancer is related to that, which features are used for the study. The third part is about the software which the authors have used to study these genomic structures, which data sets are used, and what is the final output for this study. The fourth part shows the proposed algorithm for the study. The fifth part shows the data preprocessing and clustering. Different preprocessing and clustering algorithms are used. The sixth part shows the results and conclusion with a future scope. The genomics data which is used by this article is taken from the Cancer Genome Atlas data portal which is freely available. Some applied imputation techniques fill up for the missing values and important features are extracted. Different clustering algorithms are applied on genome dataset and results are generated.
这篇文章是关于基因组结构的研究和从它识别癌症类型。它分为六个部分。第一部分是关于癌症的介绍,癌症的类型,癌症是如何产生的,等等。第二部分是关于基因组研究以及癌症是如何与之相关的,研究中使用了哪些特征。第三部分是关于作者用来研究这些基因组结构的软件,使用了哪些数据集,以及这项研究的最终输出是什么。第四部分给出了本文提出的算法。第五部分展示了数据的预处理和聚类。使用了不同的预处理和聚类算法。第六部分给出了研究结果和结论,并对未来进行了展望。本文使用的基因组学数据来自免费提供的癌症基因组图谱数据门户网站。一些应用的插值技术填补了缺失的值,提取了重要的特征。在基因组数据集上应用不同的聚类算法并生成结果。
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引用次数: 1
An Effective Track Designing Approach for a Mobile Robot 一种有效的移动机器人轨迹设计方法
Pub Date : 2019-07-01 DOI: 10.4018/IJNCR.2019070102
S. Pattanayak, B. B. Choudhury, S. C. Sahoo, S. Agarwal
Advancements of technology in day to day life demands upgradation in the existing soft computing approaches, for enhancing the accuracy. So, the existing particle swarm optimization (PSO) has been upgraded in this article and the new approach is adaptive particle swarm optimization (APSO). Designing an effective track which is shorter in length, takes less travel time, computation time, smooth, feasible and has zero collision risk with obstacles is always a crucial issue. To solve these issues APSO approach has been adopted in this work. A static environment has been implemented in this article for conducting the simulation study. Fifteen numbers of obstacles have been taken into consideration for designing the environment. A comparability study has been stuck between PSO and APSO to recognize the fittest approach for track design (less track size and travel time) with the shortest computation time. The APSO approach is identified as the best suited track designing tool for mobile robots.
在日常生活中,技术的进步要求对现有的软计算方法进行升级,以提高准确性。因此,本文对已有的粒子群优化方法进行了改进,提出了自适应粒子群优化方法。设计一条长度短、运行时间短、计算时间短、平滑、可行、与障碍物无碰撞风险的有效轨道一直是一个关键问题。为了解决这些问题,本研究采用了APSO方法。本文实现了一个静态环境来进行仿真研究。在设计环境时考虑了15种障碍。为了在最短的计算时间内找出最适合轨道设计的方法(更小的轨道尺寸和运行时间),对粒子群算法和粒子群算法进行了比较研究。APSO方法被认为是最适合移动机器人轨迹设计的工具。
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引用次数: 2
Cost Minimization Through Load Balancing and Effective Resource Utilization in Cloud-Based Web Services 基于云的Web服务中通过负载平衡和有效资源利用实现成本最小化
Pub Date : 2019-04-01 DOI: 10.4018/IJNCR.2019040103
M. S. Das, A. Govardhan, D. Vijayalakshmi
With the growth of internet-based applications and the explosion of consumers, cloud-based web service applications have become more common and the importance of minimizing the cost, increasing the interactivity, and management and efficient use of resources has become high. Existing methods like fixed cost per month no longer satisfy the application maintenance costs of the modern app developers. In this article, the authors propose an enhanced model for improving efficiency; maximize availability and minimizing the cost of cloud-based web applications. The authors have conducted experiments on grid dataset and analyzed the results using several algorithms on the load balancer with the multilevel optimized shortest remaining time scheduling method. The analysis clearly proves that applying a “pay as you” go mechanism will substantially reduce the cost and will improve the efficiency which resources are utilized. The results clearly suggest improvements in cost minimization and effective utilization of resources leading to effective utilization of services.
随着基于internet的应用程序的增长和消费者的爆炸式增长,基于云的web服务应用程序变得越来越普遍,最小化成本、增加交互性以及管理和有效利用资源的重要性变得越来越高。现有的方法,如每月固定费用,不再满足现代应用程序开发人员的应用程序维护成本。在本文中,作者提出了一个提高效率的增强模型;最大化可用性并最小化基于云的web应用程序的成本。作者在网格数据集上进行了实验,并在负载均衡器上采用多级优化最短剩余时间调度方法对几种算法的结果进行了分析。分析清楚地证明,实行“现收现付”机制将大大降低成本,提高资源利用效率。结果清楚地表明,在成本最小化和资源有效利用方面的改进导致了服务的有效利用。
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引用次数: 4
期刊
Int. J. Nat. Comput. Res.
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