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2022 1st Zimbabwe Conference of Information and Communication Technologies (ZCICT)最新文献

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Vehicle Damage model classification for Zimbabwe Insurance Sector using MobileNetV2 and DenseNet121 使用MobileNetV2和DenseNet121的津巴布韦保险部门车辆损害模型分类
Pub Date : 2022-11-09 DOI: 10.1109/ZCICT55726.2022.10045873
Pavlov Takudzwa Mpinyuri, Edmore Tarambiwa
According to the United Nations Road Safety Performance Review-Zimbabwe report, every 15 minutes, five people die in road accidents within Zimbabwe, recording the highest number of accidents in the SADC region. The situation has brought more pressure and work in the insurance sector as they are expected to process all the claims accurately and timely. Deep learning entails automation, enhancement, analysis, and high accuracy in areas like speech recognition, object detection, and language translation. In this paper, two modern deep learning algorithms MobileNetV2 and DenseNetV121 were used to develop the vehicle damage classification models. The models were used to detect damaged main features of a car, which are: the door, bumper, windscreen, tail lamp, and headlamp. Mobile NetV 2’s53 layers and DenseNet121’s121 layers produced high accuracy rates for identifying damaged parts in vehicles. However, DenseNetV2 produced a higher accuracy of 84& than MobileNetV2, with an accuracy rate of 78%. The models also used low computational resources than the traditional algorithms making them applicable in different insurance companies as they can be easily embedded into client’s mobile phones.
根据《联合国道路安全绩效审查-津巴布韦》报告,津巴布韦境内每15分钟就有5人死于道路交通事故,是南部非洲发展共同体地区交通事故人数最多的国家。这种情况给保险部门带来了更大的压力和工作量,因为他们被期望准确及时地处理所有索赔。深度学习需要在语音识别、目标检测和语言翻译等领域实现自动化、增强、分析和高精度。本文采用两种现代深度学习算法MobileNetV2和DenseNetV121建立车辆损伤分类模型。这些模型被用来检测汽车受损的主要特征,包括:车门、保险杠、挡风玻璃、尾灯和前灯。Mobile netv2的53层和DenseNet121的121层在识别车辆损坏部件方面产生了很高的准确率。然而,DenseNetV2的准确率为84&,高于MobileNetV2,准确率为78%。与传统算法相比,这些模型使用的计算资源也更少,这使得它们可以很容易地嵌入到客户的手机中,从而适用于不同的保险公司。
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引用次数: 0
A Mobile-Based Control System For Smart Homes 基于移动的智能家居控制系统
Pub Date : 2022-11-09 DOI: 10.1109/ZCICT55726.2022.10046011
Tshimanga Danny Kazadi, K. Sibanda, Nyashadzashe Tamuka
A smart-home provides a convenient, comfortable secure, and interactive home. The house owner may be able to manage his or her home using a smartphone. Automation systems are increasingly significant and widely adopted in homes to keep improving our quality of life. These systems make it simple and convenient to use household appliances. They provide an innovative way of living in which the homeowner can control his entire house using a smartphone, from turning on a light to unlocking and locking doors; they also provide efficient use of energy. This research created a mobile-based system for home automation. As a methodology, the system was developed using the waterfall model. The model depicts the software development process as a linear and progressive flow. This means that any phase of development can begin only after the previous phase is completed. The simulation methodology was employed during the study for the evaluation of the developed system. Ten trials were carried out to assess the implemented system’s performance. To assess the system’s reliability, the mean-time to failure was utilized. During performance analysis, the study’s system was found to outperform the two other approaches
智能家居提供了一个方便、舒适、安全、互动的家庭。房主可以用智能手机管理他或她的家。自动化系统越来越重要,在家庭中被广泛采用,以不断提高我们的生活质量。这些系统使家用电器的使用变得简单方便。它们提供了一种创新的生活方式,房主可以用智能手机控制整个房子,从开灯到开锁锁门;它们还能有效地利用能源。本研究创建了一个基于移动的家庭自动化系统。作为一种方法论,该系统是使用瀑布模型开发的。该模型将软件开发过程描述为一个线性和渐进的流程。这意味着开发的任何阶段只能在前一阶段完成后开始。研究中采用仿真方法对所开发的系统进行了评价。进行了十项试验,以评估所实施系统的性能。为了评估系统的可靠性,采用了平均失效时间。在性能分析过程中,发现该研究系统的性能优于其他两种方法
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引用次数: 1
Quadratic Weighted Kappa Score Exploration in Diabetic Retinopathy Severity Classification Using EfficientNet 二次加权Kappa评分在糖尿病视网膜病变严重程度分级中的应用
Pub Date : 2022-11-09 DOI: 10.1109/ZCICT55726.2022.10045938
Lincoln Chivinge, Leslie Kudzai Nyandoro, Kudakwashe Zvarevashe
Diabetic Retinopathy (DR), chronic progressive disease of the eye, may give rise to permanent sight loss. Clinicians use fundus pictures to check if DR is present and rely on physicians to diagnose the stage or severity by visual inspection of the images. In relying on a clinician’s subjective prognosis, this is deemed a procedure that takes a lot of time and susceptible to misjudgements. In discovering DR, poor Quadratic Weighted Kappa (QWK) scores have resulted from poor quality of pictures and imbalanced distribution of classes. Even though studies have shown high accuracy, sensitivity, specificity and ROC metrics, their limitation is that they do not consider the level of disparity across the classified labels. The QWK score demonstrates that even if an algorithm presents high accuracy, it is still not best fit to classify DR into its 5 classes. Many researchers have tried fine-tuning the neural network to create noise-resistant deep learning and recorded high accuracy and sensitivity but low QWK scores. The problem with the other methods is mainly pre-processing of the images and model building patterns. Most of the studied literature lacks the image augmentation step which might lead to an erroneous result. This research aims to create an algorithm from deep learning models with a data augmentation step and demonstrate how important it is for attaining better QWK scores for all stages of diabetic retinopathy. The model met study objectives and obtained an accuracy of 93% and a QWK score of 0.961. The outcomes show that the method can make accurate predictions without need for human feature extraction and that it may be used as an early DR diagnostic and staging screening tool.
糖尿病性视网膜病变(DR)是一种慢性进行性眼部疾病,可能会导致永久性视力丧失。临床医生使用眼底图片来检查DR是否存在,并依靠医生通过视觉检查图像来诊断阶段或严重程度。在依靠临床医生的主观预测,这被认为是一个过程,需要大量的时间和容易误判。在发现DR时,二次加权Kappa (Quadratic Weighted Kappa, QWK)分数较差是由于图片质量较差和班级分布不平衡造成的。尽管研究显示了较高的准确性、敏感性、特异性和ROC指标,但它们的局限性在于它们没有考虑分类标签之间的差异程度。QWK分数表明,即使算法具有很高的准确率,但仍然不是最适合将DR划分为5类。许多研究人员尝试微调神经网络以创建抗噪声深度学习,并记录了高准确性和灵敏度,但QWK分数较低。其他方法的问题主要在于图像的预处理和模型的构建模式。大多数研究文献缺少图像增强步骤,这可能导致错误的结果。本研究旨在从具有数据增强步骤的深度学习模型中创建一种算法,并证明它对于在糖尿病视网膜病变的所有阶段获得更好的QWK分数是多么重要。该模型达到了研究目标,准确率为93%,QWK得分为0.961。结果表明,该方法可以在不需要人体特征提取的情况下进行准确的预测,可以作为早期DR诊断和分期筛查工具。
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引用次数: 0
Tomato Leaf Diseases Detection with Recommended Prescription Using Deep Learning 基于深度学习的推荐处方番茄叶病检测
Pub Date : 2022-11-09 DOI: 10.1109/ZCICT55726.2022.10045854
Fredy Chimire, Mbizo Godfrey, Kudakwashe Zvarevashe
Detecting early signs of plant leaf diseases is vital in an agrarian economy. Automatic Leaf disease recognition is extremely important because predictive mechanisms that aid in the avoidance of losses can be adopted timeously. Transfer learning algorithms have become a popular solution for recognizing tomato leaf diseases over the years. However, they have innate limitations which include higher processing time and lower accuracy according to various expectations in regards to problem domain. A classification algorithm is as good as the features used to develop the model. Therefore, the primary objective of this experimental study was to discover the most discriminating features in detecting tomato leaf diseases. The paper presents a combination of Grayscale Pixel Value (GPV) features and ResNet9 in an effort to solve the aforementioned problem. We evaluated the proposed solution against other features such as Mean Pixel Value (MPV) and other deep learning generated features. The results showed that our proposed method is effective in detecting tomato leaf diseases because of the significantly low computation time (10 minutes) and superior accuracy (98.59%).
发现植物叶片病害的早期迹象对农业经济至关重要。自动叶片疾病识别是极其重要的,因为预测机制有助于避免损失可以及时采用。多年来,迁移学习算法已成为识别番茄叶片疾病的流行解决方案。然而,根据问题领域的不同期望,它们存在固有的局限性,包括较高的处理时间和较低的精度。分类算法与用于开发模型的特征一样好。因此,本实验研究的主要目的是发现番茄叶病检测中最具鉴别性的特征。本文提出了灰度像素值(Grayscale Pixel Value, GPV)特征与ResNet9相结合的方法来解决上述问题。我们根据其他特征,如平均像素值(MPV)和其他深度学习生成的特征,评估了提出的解决方案。结果表明,该方法计算时间短(10分钟),准确率高(98.59%),能够有效地检测番茄叶片病害。
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引用次数: 0
Automatic detection of Covid-19 based on lung CT images using Deep Convolutional Neural Networks (CNN) 基于深度卷积神经网络(CNN)肺部CT图像的Covid-19自动检测
Pub Date : 2022-11-09 DOI: 10.1109/ZCICT55726.2022.10045962
Shawn Mahachi, Kudakwashe Zvarevashe, Leslie Kudzai Nyandoro
In recent years, the COVID-19 pandemic has spread all over the world. Due to its rapid transmission, techniques that automatically detect COVID-19 infections and distinguish it from other forms of pneumonia are crucial. The scientific community has embarked on finding solutions to quick detection of COVID-19 through implementation of deep learning(DL) techniques that can diagnose COVID-19 using computed tomography (CT) lung scans. The use of CT images has been widely accepted in medical imaging and it is a pertinent screening tool due to its higher sensitivity in recognizing early pneumonic changes. Also, most developed DL models developed have been end-to-end from feature extraction to categorization of the COVID19 infected images. The proposed model results showed high accuracy rates on both training and testing of the model in COVID-19 classification. A customised ResNet-50 architecture has the best results in classifying the images and achieved state of art accuracy of 97% on training and testing using the COVID dataset with 200 epochs. This work presented a computationally efficient and highly accurate model for multi-class classification of normal and infected individuals. The model can help in effective early screening of COVID-19 cases hence reducing the burden on healthcare systems.
近年来,新冠肺炎疫情在全球蔓延。由于其传播迅速,自动检测COVID-19感染并将其与其他形式的肺炎区分开来的技术至关重要。科学界已经开始寻找通过使用计算机断层扫描(CT)肺部扫描诊断COVID-19的深度学习(DL)技术来快速检测COVID-19的解决方案。CT图像在医学影像学中已被广泛接受,并因其在识别早期肺炎变化方面具有较高的灵敏度而成为一种相关的筛查工具。此外,大多数已开发的深度学习模型都是端到端的,从特征提取到covid - 19感染图像的分类。该模型在COVID-19分类中的训练和测试结果均显示出较高的准确率。定制的ResNet-50架构在图像分类方面具有最佳效果,并在使用200个epoch的COVID数据集进行训练和测试时达到了97%的最先进准确率。本文提出了一种计算效率高、准确率高的正常和感染个体多类分类模型。该模型有助于有效早期筛查COVID-19病例,从而减轻卫生保健系统的负担。
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引用次数: 0
A Supervised Machine Learning Model to Optimize Human Resources Analytics for Employee Churn Prediction 一种用于优化人力资源分析的监督机器学习模型,用于员工流失预测
Pub Date : 2022-11-09 DOI: 10.1109/ZCICT55726.2022.10045987
Vengai Musanga, Edmore Tarambiwa, Kudakwashe Zvarevashe
Employee churn is one of the most daunting challenges that an organization is likely to face in its lifecycle. An unexpected employee departure can adversely impact service delivery, reduce productivity and customer loyalty. It is therefore pertinent to predict employee churn to help organizations retain valuable employees. This paper proposes a model that makes use of feature selection through Pearson Correlation Method, Information Gain and the Recursive Feature Elimination together with robust classification methods that include Random Forest (RF), Logistic Regression (LR), Decision Trees (DT), Gradient Boosting Machines (GBM) and K Nearest Neighbors (KNN) to predict employee churn. The training and testing data were obtained from the IBM dataset. The accuracy of the algorithms improved after applying the feature selection methods. Experimental results showed that Random Forest performed better than all the comparative algorithms in terms of classification accuracy. Consequently, the algorithm demonstrated to be a more appropriate algorithm in predicting employee churn.
员工流失是一个组织在其生命周期中可能面临的最令人生畏的挑战之一。员工意外离职会对服务产生不利影响,降低生产力和客户忠诚度。因此,预测员工流失有助于组织留住有价值的员工。本文提出了一个模型,该模型利用Pearson相关法、信息增益和递归特征消除的特征选择,以及包括随机森林(RF)、逻辑回归(LR)、决策树(DT)、梯度增强机(GBM)和K近邻(KNN)在内的鲁棒分类方法来预测员工流失。训练和测试数据来自IBM数据集。采用特征选择方法后,提高了算法的准确率。实验结果表明,Random Forest在分类精度方面优于所有比较算法。因此,该算法被证明是一个更合适的预测员工流失的算法。
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引用次数: 1
An assessment of Internet of Things (IoT) adoption readiness in water and sanitation in Zimbabwe. A Case of the City of Gweru. 对津巴布韦水和卫生设施中物联网(IoT)采用准备情况的评估。圭鲁市的案例。
Pub Date : 2022-11-09 DOI: 10.1109/ZCICT55726.2022.10045922
Estery Shumba, Belinda Mutunhu Ndlovu, S. Nleya, Nesisa Moyo
People have rights to water and sanitation as stated under International Law. It is believed that one billion people in the world lack access to safe drinking water, while two billion have inadequate access to sanitation facilities. Water and sanitation in developing countries face many challenges which hinder the achievement of the Millenium Development Goals and the current Sustainable Development Goals. Even though the Internet of Things (IoT) gained popularity in 2010, its adoption by Zimbabwean local authorities is dawdling. The City of Gweru has been experiencing environmental management problems, waterborne disease outbreaks, serious water shortages, and high-water losses. It is against this background that this study assesses the City of Gweru’s IoT adoption readiness in water and sanitation through the lens of the 5D TDWI IoT readiness assessment model. A positivist research philosophy guided by quantitative data collection methods is used. The results reveal that the City of Gweru’s IoT adoption readiness in water and sanitation is at its preliminary stages and it is established that employees have IoT knowledge as evidenced by their positive attitude towards its adoption. However, the City of Gweru has challenges in the dissemination of vital information to its employees about its ICT policies, goals, and strategic plan.
根据国际法,人们有权获得水和卫生设施。据信,世界上有10亿人无法获得安全饮用水,20亿人无法充分利用卫生设施。发展中国家的水和卫生设施面临许多挑战,阻碍了千年发展目标和当前可持续发展目标的实现。尽管物联网(IoT)在2010年开始流行,但津巴布韦地方当局对其的采用却在拖延。Gweru市一直面临着环境管理问题、水传播疾病爆发、严重缺水和大量水资源流失。正是在这种背景下,本研究通过5D TDWI物联网准备情况评估模型评估了圭鲁市在水和卫生设施方面的物联网采用准备情况。采用定量数据收集方法指导的实证主义研究哲学。结果显示,Gweru市在水和卫生设施方面的物联网采用准备工作处于初步阶段,并且员工对采用物联网的积极态度证明了他们拥有物联网知识。然而,Gweru市在向其员工传播有关其ICT政策、目标和战略计划的重要信息方面面临挑战。
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引用次数: 0
Driver drowsiness detection using Convolutional Neural Networks-inspired features and Principal component analysis with K-Nearest Neighbors 基于卷积神经网络特征和k近邻主成分分析的驾驶员困倦检测
Pub Date : 2022-11-09 DOI: 10.1109/ZCICT55726.2022.10045859
Marvelous Alexander Panganai, Leslie Kudzai Nyandoro, Kudakwashe Zvarevashe
Drowsiness and fatigue are the major reasons for triggering serious and severe road crashes in Zimbabwe and the whole world at large. The developments in technology in recent years brought support and backing to drivers using intelligent automobile systems. Several research studies used datasets of a single driver for training and testing. Some as well used mainly day time images for training and testing the models. Therefore, fatigue and drowsiness is a key possible field of study to prevent numerous number of sleep induced road crashes. In this paper, two methods of feature extraction were proposed which are the MLP (Multilayer - Perceptron), the CNN (Convolutional Neural Network). The PCA (Principal Component Analysis) method was used for dimensionality reduction. Based on these methods, five classifiers where used to detect drowsiness on the driver. The five classifiers used where the LDA, XGBoost, LR, Decision Tree and the K-Nearest neighbors. Experiments were done in order to examine the capacity and usefulness of the approaches contrasted with other techniques. Experimental outcomes demonstrate that the feature extraction technique of CNN provided high accuracy on the five classifiers. The KNN was the average best classifier with a 100% accuracy. Experimental results indicated that the PCA improved the classifiers. This study delivers important and significant answers in practice to curb motor vehicle crashes due to drowsiness.
困倦和疲劳是引发津巴布韦乃至世界各地严重道路交通事故的主要原因。近年来技术的发展为驾驶员使用智能汽车系统提供了支持和支持。一些研究使用单个驾驶员的数据集进行训练和测试。有些人主要使用白天的图像来训练和测试模型。因此,疲劳和困倦是一个关键的可能的研究领域,以防止大量的睡眠引起的交通事故。本文提出了两种特征提取方法:MLP (Multilayer - Perceptron)和CNN (Convolutional Neural Network)。采用主成分分析法(PCA)进行降维。基于这些方法,使用五种分类器来检测驾驶员的睡意。使用的五个分类器分别是LDA、XGBoost、LR、决策树和k近邻。实验是为了检验这些方法与其他技术相比的能力和有用性。实验结果表明,CNN的特征提取技术在五种分类器上都具有较高的准确率。KNN是平均最佳分类器,准确率为100%。实验结果表明,主成分分析改进了分类器。这项研究在实践中提供了重要的和有意义的答案,以遏制由嗜睡引起的机动车碰撞。
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引用次数: 0
Investigating The Challenges of Adopting Data Analytics In Zimbabwe’s Retail Sector 调查在津巴布韦零售业采用数据分析的挑战
Pub Date : 2022-11-09 DOI: 10.1109/ZCICT55726.2022.10045915
Noma Muzunze, Sam Takavarasha
The retail sector is experiencing unprecedented volatility, uncertainty and ambiguity, and these culminated in the closure of some of its notable giants due to the global financial crisis and the novel corona virus pandemic. This paper uses Organisational Mindfulness (OM) and Resource Based View (RBV) to investigate the adoption of data analytics in developing countries using data from Zimbabwe’s retail sector. The results showed that while some industries use big data analytics (BDA), its adoption remains an insurmountable task for some Zimbabwean retailers due to infrastructural, resource and other technical challenges. It revealed that successful adoption of BDA in the retail sector can help change business operations, including the ability to match customer expectations, hone product lines and improve marketing campaigns.
零售业正在经历前所未有的波动、不确定性和模糊性,由于全球金融危机和新型冠状病毒大流行,这些因素最终导致一些知名巨头关闭。本文使用组织正念(OM)和基于资源的观点(RBV)来调查发展中国家采用数据分析,使用来自津巴布韦零售业的数据。结果显示,虽然一些行业使用大数据分析(BDA),但由于基础设施、资源和其他技术挑战,对一些津巴布韦零售商来说,采用大数据分析仍然是一项不可逾越的任务。报告显示,在零售业成功采用BDA可以帮助改变业务运营,包括满足客户期望的能力、优化产品线和改善营销活动。
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引用次数: 0
Local Area Network Based Collaboration Using Distributed Computing 基于局域网络的分布式计算协同
Pub Date : 2022-11-09 DOI: 10.1109/ZCICT55726.2022.10045858
Joseph Mutengeni, Alec Musasa, Belinda Mutunhu
Collab is an application that uses distributed computing techniques for effective, real-time collaboration over a Local Area Network (LAN) in either a home, educational, or workplace environment. Users can collaborate by joining a secure collaboration session in the absence of an internet connection. Within a session, users can share messages, digital content, and reviews. Most existing LANbased applications lack important collaboration features. It is against this backdrop that we propose the use of distributed computing techniques in a small-scale, serverless LAN to empower users to collaborate effectively in local teams. Thus, we design and implement a computer application that can be used for collaboration on a LAN in the absence of a centralised web service.
Collab是一个应用程序,它使用分布式计算技术在家庭、教育或工作环境中的局域网(LAN)上进行有效的实时协作。用户可以在没有internet连接的情况下通过加入安全协作会话进行协作。在会话中,用户可以共享消息、数字内容和评论。大多数现有的基于局域网的应用程序缺乏重要的协作特性。正是在这种背景下,我们建议在小型无服务器局域网中使用分布式计算技术,以使用户能够在本地团队中有效地协作。因此,我们设计并实现了一个计算机应用程序,它可以在没有集中web服务的情况下用于局域网上的协作。
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引用次数: 0
期刊
2022 1st Zimbabwe Conference of Information and Communication Technologies (ZCICT)
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