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Discriminate Supervised Weighted Scheme for the Classification of Time Series Signals 时间序列信号分类的判别监督加权算法
Pub Date : 2021-07-01 DOI: 10.4018/IJSKD.2021070101
E. Ramanujam, S. Padmavathi
Innovations and applicability of time series data mining techniques have significantly increased the researchers' interest in the problem of time series classification. Several algorithms have been proposed for this purpose categorized under shapelet, interval, motif, and whole series-based techniques. Among this, the bag-of-words technique, an extensive application of the text mining approach, performs well due to its simplicity and effectiveness. To extend the efficiency of the bag-of-words technique, this paper proposes a discriminate supervised weighted scheme to identify the characteristic and representative pattern of a class for efficient classification. This paper uses a modified weighted matrix that discriminates the representative and non-representative pattern which enables the interpretability in classification. Experimentation has been carried out to compare the performance of the proposed technique with state-of-the-art techniques in terms of accuracy and statistical significance.
时间序列数据挖掘技术的创新和适用性极大地增加了研究人员对时间序列分类问题的兴趣。为此提出了几种算法,分为shapelet、interval、motif和基于全序列的技术。其中,词袋技术(bag-of-words technique)作为文本挖掘方法的一种广泛应用,因其简单有效而表现出色。为了提高词袋技术的效率,本文提出了一种判别监督加权方法来识别类的特征和代表模式,从而实现高效分类。本文采用一种改进的加权矩阵来区分代表性和非代表性模式,使分类具有可解释性。已经进行了实验,以比较所提出的技术与最先进的技术在准确性和统计意义方面的性能。
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引用次数: 0
Using the Interpretative Structural Modeling Approach for Understanding the Relationships of Drivers of Online Shopping: Evidence From a Developing Economy 利用解释结构建模方法理解网络购物驱动因素之间的关系:来自发展中经济体的证据
Pub Date : 2021-04-01 DOI: 10.4018/IJSKD.2021040106
Roy Jucip Tabañag Basar, H. R. Borden, M. L. Busano, X. K. Gonzales, V. G. Guerrero, T. A. Tan, Leahlizbeth Sia, Kafferine D. Yamagishi, L. Ocampo
The internet has paved the way for a revolution in the shopping industry via online platforms. As online shopping transactions become popular, it is increasingly important to understand the drivers that influence the consumers in availing such platforms. Furthermore, the differences between developed and developing economies are evident from socioeconomic, regulatory, and e-commerce disparities. Understanding such domain from a developing economies perspective is not well explored in the current literature. Thus, this study aims to identify the relationships among drivers of consumers in pursuing online shopping in a developing economy (i.e., the Philippines) using interpretative structural modeling. The study identified six drivers: “convenience/ease of use,” “competitive price,” “product availability,” “value of time,” “access to more information,” and “several payment options.” Results show that all drivers, except for “competitive price,” are closely interlinked to each other, such that initiatives must be simultaneously developed to address these drivers under resource constraints.
互联网通过在线平台为购物行业的革命铺平了道路。随着网上购物交易的流行,了解影响消费者使用这些平台的驱动因素变得越来越重要。此外,发达经济体和发展中经济体之间的差异在社会经济、监管和电子商务方面的差异也很明显。从发展中经济体的角度理解这一领域,目前的文献没有很好地探讨。因此,本研究旨在利用解释性结构模型确定发展中经济体(如菲律宾)消费者网购驱动因素之间的关系。该研究确定了六个驱动因素:“方便/易于使用”、“有竞争力的价格”、“产品可用性”、“时间价值”、“获取更多信息”和“多种支付选项”。结果表明,除了“竞争性价格”之外,所有的驱动因素都是紧密相连的,因此必须同时制定计划来解决资源约束下的这些驱动因素。
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引用次数: 0
Intelligent Approach for Enhancing Prediction Issues in Scalable Data Mining 一种增强可扩展数据挖掘预测问题的智能方法
Pub Date : 2021-04-01 DOI: 10.4018/IJSKD.2021040108
K. Fouad, Tarek Elsheshtawy, Mohamed F. Dawood
Support vector regression (SVR) is one of the supervised machine learning algorithms that can be exploited for prediction issues. The main enhancement issue of SVR is attempting to select a reliable parameter to assure the high performance of SVR. In this paper, the intelligent approach is based on integrating the enhanced particle swarm optimization PSO with the SVR to achieve the proper SVR parameters that are used to improve SVR performance. The enhanced PSO is performed by implementing parallelized linear time-variant acceleration coefficients (TVAC) and inertia weight (IW) of PSO, called PLTVACIW-PSO. The proposed approach is evaluated by performing the experimental comparisons of the proposed algorithm with eleven different algorithms. These comparisons are performed by applying the proposed algorithm and these algorithms to 21 different datasets varying in their scales.
支持向量回归(SVR)是一种可用于预测问题的监督机器学习算法。SVR的主要增强问题是如何选择可靠的参数来保证SVR的高性能。本文的智能方法是将增强粒子群优化粒子群算法与支持向量回归算法相结合,以获得适当的支持向量回归算法参数,从而提高支持向量回归算法的性能。通过并行化线性时变加速度系数(TVAC)和惯性权重(IW)实现PSO的增强,称为PLTVACIW-PSO。通过与11种不同的算法进行实验比较,对所提出的方法进行了评估。这些比较是通过将提出的算法和这些算法应用于21个不同尺度的不同数据集来进行的。
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引用次数: 1
An Analysis of Financial Distress Prediction of Selected Listed Companies in Colombo Stock Exchange 科伦坡证券交易所上市公司财务困境预测分析
Pub Date : 2021-04-01 DOI: 10.4018/IJSKD.2021040104
K. Gunawardana
The main objective of the study is to predict financial distress and developing a prediction model using accounting related variables in selected listed firms in Sri Lanka. Decision criteria for financial distress has been selected based on the existing literature on financial distress prediction applicable to the Sri Lankan firms. A sample of 22 financially distressed firms along with 33 financially non-distressed firms have been used to conduct this study. Artificial neural network was used as the basic approach to the study in predicting financial distress. A neural network to predict financial distress was developed with an accuracy of 85.7% one year prior to its occurrence. The second analysis conducted was the panel regression considering five years of cross-sectional data for the sample of companies selected. This analysis was able to identify a significant relationship of leverage, price-to-book ratio and Tobin's Q ratio to the prediction of financial distress of a firm.
本研究的主要目的是预测财务困境,并在斯里兰卡选定的上市公司使用会计相关变量开发预测模型。财务困境的决策标准已经选择基于现有的文献对财务困境预测适用于斯里兰卡公司。22家财务困境公司和33家财务非困境公司的样本被用来进行这项研究。本文采用人工神经网络作为财务危机预测的基本方法。一个预测财务危机的神经网络在其发生前一年的准确率为85.7%。第二个分析进行了面板回归考虑五年的横截面数据的公司选择的样本。该分析能够确定杠杆率、市净率和托宾Q比与公司财务困境的预测之间的显著关系。
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引用次数: 1
White Blood Cells Segmentation and Classification Using Swarm Optimization Algorithms and Multilayer Perceptron 基于群优化算法和多层感知器的白细胞分割与分类
Pub Date : 2021-04-01 DOI: 10.4018/IJSKD.2021040102
Shahd Tarek, H. M. Ebied, A. Hassanien, M. Tolba
This study proposes a segmentation and classification system for early detection of blood disease; the proposed system consists of three phases. The first phase is segmenting white blood cells using multi-level thresholding optimized by the butterfly optimization algorithm to select the optimal threshold value to increase the accuracy. The second phase is extracting geometric and shape features of the segmented cells. The third phase is using the gray wolf optimizer to adopt the weights and biases of the multilayer perceptron to enhance the accuracy of classification between normal and leukemia cells, classify the normal cells to their five categories, and classify the leukemia to their four categories. The proposed system applies to different data sets (ALL-IDB2, LISC, and ASH-Image bank) and overcomes the segmentation and classification problems of microscopic images and shows an outstanding segmentation result, 98.02%; and the average classification accuracy between normal and leukemia cells is 98.58%, between white blood cell categories is 98.9%, and between leukemia types is 98.93%.
本研究提出一种用于血液疾病早期检测的分割分类系统;拟议的系统包括三个阶段。第一阶段是利用蝴蝶优化算法优化的多级阈值对白细胞进行分割,选择最优阈值以提高准确率。第二阶段是提取分割细胞的几何和形状特征。第三阶段是利用灰狼优化器,利用多层感知器的权重和偏置来提高正常细胞和白血病细胞的分类精度,将正常细胞分为5类,将白血病细胞分为4类。该系统适用于不同的数据集(ALL-IDB2、LISC和ASH-Image bank),克服了显微图像的分割和分类问题,分割结果为98.02%;正常细胞与白血病细胞的平均分类准确率为98.58%,白细胞分类之间的平均分类准确率为98.9%,白血病类型之间的平均分类准确率为98.93%。
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引用次数: 4
A Fall Risk Evaluation and Feedback System for Older Adults: From a Technical to a Sociotechnical Need 老年人跌倒风险评估与反馈系统:从技术需求到社会技术需求
Pub Date : 2021-04-01 DOI: 10.4018/IJSKD.2021040107
I. Jahnke, L. Phillips, Fatih Demir, C. Abbott, M. Skubic
Falls are widespread among older adults causing serious injuries and threatening their quality of life. An approach to estimate fall risk, and to prevent falls, is the Timed-Up-and-Go (TUG) test. The TUG test has established validity and reliability. However, as a clinical test, it is not accessible for personal use. To enhance its reach, the authors developed a prototype called Fall Risk Evaluation and Feedback System (FREFS). The prototype is a Kinect-based depth sensor system with interfaces that support older adults in completing the TUG test and receiving personalized test results. The personalized feedback feature is novel that existing prototypes do not include. This study's goal was to gain knowledge of the user experience of FREFS. This research applied methods of observation, interviews, and collected responses on the System Usability Scale (SUS). Results show participants perceived the system as usable, with SUS score of 84.3, but also revealed issues. First, users were unsure how to deal with the TUG tests results when the results showed high fall risk. Second, clearer instructions and reduction of information overload specifically for these age groups were needed. Third, a communication approach embedded into the system would be required (i.e., a link to a chatbot feature or a button to connect to a real person). Overall, the study demonstrated that such a prototype cannot be fully automated; it needs a sociotechnical system solution that includes human communication.
跌倒在老年人中很普遍,造成严重伤害并威胁到他们的生活质量。一种评估跌倒风险并防止跌倒的方法是“计时起跑”(TUG)测试。TUG测试具有一定的效度和信度。然而,作为一种临床试验,它不能供个人使用。为了扩大它的覆盖范围,作者开发了一个名为跌倒风险评估和反馈系统(FREFS)的原型。原型是一个基于kinect的深度传感器系统,其接口支持老年人完成TUG测试并接收个性化测试结果。个性化反馈功能是新颖的,现有的原型不包括。本研究的目的是了解FREFS的用户体验。本研究采用了观察、访谈和收集系统可用性量表(SUS)反馈的方法。结果显示,参与者认为系统是可用的,SUS得分为84.3,但也暴露了问题。首先,当结果显示高坠落风险时,用户不确定如何处理TUG测试结果。其次,需要更明确的指示和减少专门针对这些年龄组的信息过载。第三,需要将通信方法嵌入到系统中(例如,链接到聊天机器人功能或连接到真人的按钮)。总的来说,研究表明,这样的原型不能完全自动化;它需要一个包含人类交流的社会技术系统解决方案。
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引用次数: 0
The South African Perspective of the Impact of Language on the Delivery of Healthcare Services 南非视角下的语言对医疗服务提供的影响
Pub Date : 2021-04-01 DOI: 10.4018/IJSKD.2021040101
T. Iyamu, P. Makovhololo
Despite its essentiality, spoken languages continue to pose severe challenges within the South African health facilities, which can be attributed to the country's adaptation of 11 official languages. Some of the challenges can be attributed to the fact that the limits to an individual's language are commensurate to the limits to an individual's real-life world and meaning, which are often influenced by semantics. The objectives of this study was to establish the factors that influence spoken languages, and how the semantics in the languages can be translated from local dialects to English by using mobile systems. The interpretivist approach was applied in the study. Data was collected through semi-structured interview technique. The actor-network theory was used as a lens to guide the analysis of the data. From the analysis, the following factors—heterogeneity of networks, bilingualism, healthcare facility, and information engine—were found to influence language semantics in South African healthcare. Based on the findings, a framework was developed that can be used to understand how language semantics influence healthcare services in the country. Thus, the study can be of interest to healthcare practitioners, language specialists for translation purposes, and IT experts for support and enablement.
尽管口语至关重要,但它继续在南非卫生设施内构成严重挑战,这可归因于该国采用了11种官方语言。一些挑战可以归因于这样一个事实,即个人语言的限制与个人的现实世界和意义的限制相称,而现实世界和意义往往受到语义的影响。本研究的目的是建立影响口语的因素,以及如何使用移动系统将语言中的语义从当地方言翻译成英语。本研究采用解释主义方法。通过半结构化访谈技术收集数据。以行动者网络理论为视角,指导数据分析。从分析中,以下因素-网络的异质性,双语,医疗设施和信息引擎-被发现影响南非医疗保健的语言语义。基于这些发现,开发了一个框架,可用于了解语言语义如何影响该国的医疗保健服务。因此,该研究可能会引起医疗保健从业人员、语言专家(用于翻译)和IT专家(用于支持和启用)的兴趣。
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引用次数: 0
Understanding Adoption Intention of Mobile Shopping Applications: Empirical Assessment From IDT - Perceived Risk and Enjoyment 了解移动购物应用程序的采用意图:来自IDT感知风险和享受的实证评估
Pub Date : 2021-04-01 DOI: 10.4018/IJSKD.2021040103
Malik Khlaif Gharaibeh, Natheer Khlaif Gharaibeh
This paper empirically explains the main determinants impacting user's intention to shop via mobile application in Jordan. This study modified innovation diffusion theory (IDT) and incorporates two new factors: perceived enjoyment and perceived risk. Data were obtained from 450 customers by using regression analysis for testing seven hypotheses. The results showed that relative advantage, compatibility, trialability, and observability are significantly associated with consumer decisions to adopt mobile shopping applications. Perceived enjoyment and perceived risk have a non-significant effect on the intention to use. Interestingly, complexity was found to be positively related to intention to use. This research confirms that IDT is a robust model when studying new technology or innovation like mobile shopping. The findings from this study are helpful for software engineers, retailers, service developers, and mobile marketers to raise the usage rate of this service among people.
本文实证地解释了影响约旦用户通过移动应用程序购物意愿的主要决定因素。本研究修正了创新扩散理论(IDT),引入了感知享受和感知风险两个新因子。通过回归分析对450名客户的数据进行了七个假设的检验。结果表明,相对优势、兼容性、可试验性和可观察性与消费者决定采用移动购物应用程序显著相关。感知享受和感知风险对使用意图的影响不显著。有趣的是,研究发现复杂性与使用意图呈正相关。这项研究证实,在研究新技术或创新(如移动购物)时,IDT是一个稳健的模型。本研究的发现有助于软件工程师、零售商、服务开发者和移动营销人员提高该服务在人们中的使用率。
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引用次数: 3
Real-Time Arabic Text-Reading for Visually Impaired People 视障人士实时阿拉伯语文本阅读
Pub Date : 2021-04-01 DOI: 10.4018/IJSKD.2021040110
Mohamed Taha, Noha Abd-ElKareem, M. Selim
Visually impaired (VI) people suffer from many difficulties when accessing printed material using existing technologies. These problems may include text alignment, focus, accuracy, software processing speed, mobility, and efficiency. Current technologies such as flatbed scanners and OCR programs need to scan an entire page. Recently, VI people prefer mobile devices because of their handiness and accessibility, but they have problems with focusing the mobile camera on the printed material. In this paper, a real-time Arabic text-reading prototype for VI people is proposed. It is based on using a wearable device for a hand finger. It is designed as a wearable ring attached to a tiny webcam device. The attached camera captures the printed Arabic text and passes it to the Arabic OCR system. Finally, the recognized characters are translated into speech using the text-to-speech (TTS) technology. Experimental results demonstrate the feasibility of the proposed prototype. It achieved an accuracy of 95.86% for Arabic character recognition and 98.5% for English character recognition.
视障人士在使用现有技术获取印刷材料时遇到许多困难。这些问题可能包括文本对齐、焦点、准确性、软件处理速度、移动性和效率。目前的技术,如平板扫描仪和OCR程序需要扫描整个页面。最近,VI人更喜欢移动设备,因为它们的轻便性和可访问性,但他们在移动相机对打印材料的聚焦方面存在问题。本文提出了一种面向VI人的实时阿拉伯语文本阅读原型。它是基于使用一个可穿戴设备的手指。它被设计成一个可穿戴的戒指,连接在一个微型网络摄像头设备上。附加的摄像机捕获打印的阿拉伯语文本并将其传递给阿拉伯语OCR系统。最后,使用文本到语音(TTS)技术将识别出的字符转换成语音。实验结果证明了该原型的可行性。阿拉伯文字符识别的准确率为95.86%,英文字符识别的准确率为98.5%。
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引用次数: 0
Role of Manufacturing Sector in the Forthcoming National Industrial Transformations 制造业在即将到来的国家工业转型中的作用
Pub Date : 2021-04-01 DOI: 10.4018/IJSKD.2021040109
J. Forrest, Jun Liu, Gérard Martorell, Liangqi Xu, Yong Liu
At the present time, various ambitious nations laid out their plans for maintaining or acquiring their leadership in the world by emphasizing innovations and by focusing on the manufacturing sector. To understand this phenomenon theoretically, this paper addresses the importance of the manufacturing sector in the overall development of a nation's economic strength. By employing systems thinking and such a logical reasoning that is commonly used in mathematics and natural science, this paper establishes three formal propositions on related issues and provides policy recommendations and open problems for future research.
目前,各种雄心勃勃的国家都制定了他们的计划,通过强调创新和专注于制造业来保持或获得他们在世界上的领导地位。为了从理论上理解这一现象,本文阐述了制造业在一个国家经济实力整体发展中的重要性。本文运用系统思维和数学和自然科学中常用的逻辑推理方法,对相关问题建立了三个形式化命题,并为未来的研究提供了政策建议和开放性问题。
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引用次数: 1
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Int. J. Sociotechnology Knowl. Dev.
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