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MOT-H: A Multi-Target Tracking Dataset Based on Horizontal View 基于水平视图的多目标跟踪数据集MOT-H
Bixuan Zhang, Yuefeng Zhang
The computer vision field is quickly developing, including multiple object tracking, as the big data age approaches. The majority of the effort is focused on tracking methods while less attention is paid to the most important aspect, data. After an analysis of existing datasets, we find that they commonly ignore the breakpoint problem in tracking and have low image quality. Thus we present the dataset named Multiple Object Tracking on Horizontal view (MOT-H). MOT-H is meticulously annotated on crowded scenes from the horizontal view, with the primary goal of proving anti-jamming performance against complicated occlusion or even complete occlusion. The breakpoint issue is emphasized, which means the target object temporarily leaves the scene and returns after a while. The proposed MOT-H dataset has 10 sequences, 20,311 frames, and 337,440 annotation boxes in total, with all pictures having the resolution of 3840 × 2160 and being filmed at 30 frames per second (fps). We establish a fair benchmark for the future object tracking method development. The whole dataset can be found at: https://drive.google.com/drive/folders/1SCUJAdbqXQStyV-F2M9UyGfsuCaxR73a?usp=sharing.
随着大数据时代的到来,计算机视觉领域正在迅速发展,包括多目标跟踪。大部分的努力都集中在跟踪方法上,而对最重要的方面——数据的关注却很少。通过对现有数据集的分析,我们发现它们通常在跟踪中忽略了断点问题,并且图像质量较低。在此基础上,提出了水平视图多目标跟踪(MOT-H)数据集。MOT-H从水平角度对拥挤的场景进行了细致的注释,其主要目标是证明对复杂遮挡甚至完全遮挡的抗干扰性能。这里强调了断点问题,这意味着目标对象暂时离开场景并在一段时间后返回。提出的MOT-H数据集有10个序列,20311帧,337440个注释框,所有图片的分辨率为3840 × 2160,拍摄速度为每秒30帧(fps)。我们为未来目标跟踪方法的发展建立了一个公平的基准。完整的数据集可以在https://drive.google.com/drive/folders/1SCUJAdbqXQStyV-F2M9UyGfsuCaxR73a?usp=sharing上找到。
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引用次数: 0
Forecasting international migrants using grey model with heat label 带热标签的灰色模型预测国际移民
Tongzheng Pu, Ming Huang, J. Yang
Migration is an important social phenomenon in the development of human society. Driven by economy, population, geography, policy, and other factors, accurate prediction of migration has always been very difficult. The grey model has the advantages of small sample size, easy calculation, no regularity in sample size, and good prediction precision, so it is very suitable for the prediction of international migration. Based on the correlation and cumulative effect of data sequence, this paper optimizes the initial value conditions of the grey model, and proposes the grey model of heat label. The proposed model is applied to the prediction of international migration from 1970 to 2020, and compared with the traditional grey model and other models, computation results show the model is practical and effective, and has positive theoretical and practical significance for international migration prediction.
移民是人类社会发展过程中一个重要的社会现象。由于经济、人口、地理、政策等因素的影响,对人口迁移的准确预测一直是非常困难的。灰色模型具有样本量小、计算方便、样本量无规律性、预测精度好等优点,非常适用于国际移民的预测。基于数据序列的相关性和累积效应,优化了灰色模型的初值条件,提出了热标签灰色模型。将该模型应用于1970 - 2020年的国际移民预测,并与传统的灰色模型和其他模型进行比较,计算结果表明该模型实用有效,对国际移民预测具有积极的理论和现实意义。
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引用次数: 1
Extending Take-Grant Model for More Flexible Privilege Propagation 为更灵活的特权传播扩展Take-Grant模型
Liang-Jui Shen, Yusong Tan, Pian Tao, Pan Dong, Jun Ma
Capability is an important security mechanism in operating systems. The Take-Grant model, as a classic capability system access control model, only has basic rewriting rules to meet the needs of security analysis, but it is difficult to be used for flexible and fine-grained permission propagation. This paper extends the traditional Take-Grant model to control the propagation of capabilities from the direction of propagation, distance and size of propagation, so as to meet the needs of security policies in complex scenarios. Besides, this paper divides permissions to different domains, making the extended model more flexible. The given examples show that the proposed extension to Take-Grant model is more expressive and flexible when doing privilege propagation.
能力是操作系统中一种重要的安全机制。Take-Grant模型作为一种经典的能力系统访问控制模型,只有基本的重写规则来满足安全分析的需要,但难以用于灵活的、细粒度的权限传播。本文对传统的Take-Grant模型进行了扩展,从传播方向、传播距离、传播规模等方面对能力的传播进行控制,以满足复杂场景下安全策略的需求。此外,本文还将权限划分到不同的域,使扩展模型更加灵活。实例表明,本文提出的扩展Take-Grant模型在进行权限传播时更具表现力和灵活性。
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引用次数: 0
Research on Conformance Engineering process of Airborne Software quality Assurance in Civil Aviation 民航机载软件质量保证一致性工程流程研究
Jing Zhao
In the life cycle process of civil aviation airborne software defined by DO-178B/C, software quality assurance process, as one of the comprehensive processes, is an important process that runs through the whole software life cycle process. According to the requirements of DO-178B/C objectives and the experience of software development and development of airworthiness projects, this paper summarizes the engineering implementation methods and key points of software quality assurance process in accordance with the requirements of DO-178B/C objectives, which provides technical guidance for practical engineering practice and provides reference and help for the engineering implementation of civil aviation airborne software quality assurance process.
在DO-178B/C定义的民航机载软件生命周期过程中,软件质量保证过程作为综合过程之一,是贯穿整个软件生命周期过程的重要过程。根据DO-178B/C目标的要求,结合适航项目软件开发和开发的经验,总结了符合DO-178B/C目标要求的软件质量保证过程的工程实施方法和要点。为实际工程实践提供技术指导,为民航机载软件质量保证流程的工程实施提供参考和帮助。
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引用次数: 0
Application of Big Data Analysis Based on Power BI in Sales Forecasts 基于Power BI的大数据分析在销售预测中的应用
Yitong Liu, Xi Chen
Microsoft Power BI is a business analysis tool based on big data. It compiles single view, multi-panel displays for interrogation of data and quick decision-making. With the help of Power Bi software, according to the historical sales amount, this paper uses the rolling forecasting method to determine the sales growth rate and make sales forecasts. On this basis, measures such as ForecastAccuracy, ForecastAccumulation and SalesAccumu-lation are created. By making visual charts in Power Bi, analyze the trend of the accuracy rate of sales forecasts, and compare the cumulative difference between the sales forecasts and the actual sales, so as to help enterprise carry out budget management more scientifically and effectively.
微软Power BI是基于大数据的商业分析工具。它编译了单视图、多面板显示,用于数据查询和快速决策。本文借助Power Bi软件,根据历史销售金额,采用滚动预测法确定销售增长率,进行销售预测。在此基础上,创建了ForecastAccuracy、ForecastAccumulation和salesaccumulation等度量。通过在Power Bi中制作可视化图表,分析销售预测准确率的趋势,对比销售预测与实际销售的累积差异,从而帮助企业更加科学有效地进行预算管理。
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引用次数: 0
Research on spatial development strategy of Daxu ancient town scenic spot based on big data analysis 基于大数据分析的大徐古镇景区空间发展策略研究
Shuo Sun
In the era of big data and information, it is of great significance to apply big data to the study of tourism spatial development strategies of scenic spots for effective protection and rational utilization of resources. Daxu Ancient Town is a typical representative of Guilin Lijiang River Scenic Area that pays equal attention to history and culture. This paper selects it as the research object, crawls the big data of tourists' travel notes in recent years from Ctrip Travel, uses ROST Content Mining 6 software to conduct text analysis on the data of tourists' travel notes in Daxu Ancient Town, deeply analyzes tourists' image perception of the ancient town from key word frequency, semantic emotion and other aspects, and clarifies the existing problems in the scenic spot, Explore the core resources of scenic tourism, and then put forward suggestions on space protection and development.
在大数据、信息化时代,将大数据应用于景区旅游空间发展策略研究,对资源的有效保护和合理利用具有重要意义。大徐古镇是桂林丽江风景区历史文化并重的典型代表。本文选取其作为研究对象,抓取携程旅游近年来的游客游记大数据,利用ROST内容挖掘6软件对大旭古镇游客游记数据进行文本分析,从关键词频次、语义情感等方面深入分析游客对古镇的形象感知,理清景区存在的问题,挖掘景区旅游的核心资源。进而提出空间保护与开发的建议。
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引用次数: 0
Wildfire Detection and Perimeter Mapping using Satellite Imagery and Machine Learning with Hyperopt Tuning 野火探测和周边测绘使用卫星图像和机器学习与Hyperopt调谐
Haolin Yang
In part due to climate change, the last few years have been some of the warmest on record and characterized by hot and dry weather. This led to a frequent outbreak of wildfires, especially in already dry areas such as California. Experiments were conducted to evaluate the ability of machine learning models to detect wildfires and map the areas burnt using satellite images. For the detection of wildfires, machine learning models of different complexities are trained to distinguish between images containing wildfires and images containing no wildfires. The tested models achieved consistently training accuracies above 90% and testing accuracies above 70%. HyperOpt was then used to fine tune the models’ hyperparameters to improve their accuracy. For mapping the areas burnt by wildfires referred to for the rest of the paper as wildfire perimeter mapping, a preliminary burn map is produced mathematically from each image. The preliminary map is then refined using an object detection model. The refined burn maps achieved an average accuracy of around 10%. However, in a few cases where the original satellite images have high image quality, the refined burn map that was produced reflected the recorded burn area with above 90% accuracy. In conclusion, machine learning models alongside satellite images have the potential to be used for quick and efficient detection of a wildfire outbreak. With some improvements to the current process, machine learning also has the potential to accurately determine the area burnt by the wildfire at any given time simply using a satellite image - a significant improvement over traditional methods such as hand sketching or GPS walk.
在一定程度上,由于气候变化,过去几年是有记录以来最热的几年,天气炎热干燥。这导致了野火的频繁爆发,特别是在加利福尼亚等已经干旱的地区。进行实验以评估机器学习模型检测野火并使用卫星图像绘制燃烧区域的能力。为了检测野火,需要训练不同复杂性的机器学习模型来区分包含野火的图像和不包含野火的图像。测试模型的训练准确率始终在90%以上,测试准确率始终在70%以上。然后使用HyperOpt对模型的超参数进行微调以提高其准确性。为了绘制被野火烧毁的区域(本文其余部分称为野火周界图),从每个图像中生成一个初步的火灾地图。然后使用目标检测模型对初步地图进行细化。经过改进的燃烧图的平均精度在10%左右。然而,在原始卫星图像质量较高的少数情况下,生成的精炼烧伤图反映记录的烧伤面积的准确率在90%以上。总之,机器学习模型和卫星图像有可能用于快速有效地检测野火爆发。通过对当前过程的一些改进,机器学习也有可能在任何给定时间使用卫星图像准确确定野火烧毁的区域-这是对传统方法(如手绘或GPS行走)的重大改进。
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引用次数: 0
Fuzzing Framework for IEC 60870-5-104 Protocol IEC 60870-5-104协议模糊测试框架
Petr Ilgner, R. Fujdiak
The importance of SCADA systems within the power grid is currently increasing due to the increased complexity of the grid. Thus, these systems may contain various security vulnerabilities, the exploitation of which may lead to large-scale blackouts. Therefore, the emphasis is nowadays on cyber security. One tool for automated testing and detection of hard-to-detect vulnerabilities such as buffer overflow and others is fuzzing. This paper discusses the fuzzing testing capabilities of IEC 60870-5-104 protocol which is used by power grid. We present a framework that can be used for automated testing. By using load balancing, high performance of the fuzzing process is achieved. The framework also provides a graphical environment to facilitate continuous testing. The functionality of the framework is demonstrated on a demonstration server into which a buffer overflow vulnerability was inserted, which was detected by the fuzzing framework.
由于电网的复杂性增加,SCADA系统在电网中的重要性正在增加。因此,这些系统可能包含各种安全漏洞,利用这些漏洞可能导致大规模停电。因此,现在的重点是网络安全。用于自动测试和检测难以检测的漏洞(如缓冲区溢出和其他漏洞)的一种工具是模糊测试。本文讨论了电网使用的IEC 60870-5-104协议的模糊测试能力。我们提出了一个可以用于自动化测试的框架。通过采用负载均衡,实现了模糊过程的高性能。该框架还提供了一个图形化环境来促进持续测试。该框架的功能在一个演示服务器上进行了演示,该演示服务器插入了一个缓冲区溢出漏洞,该漏洞被模糊测试框架检测到。
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引用次数: 1
LP-HPA:Load Predict-Horizontal Pod Autoscaler for Container Elastic Scaling LP-HPA:负载预测-水平Pod自动缩放容器弹性缩放
Yifei Xu, Kai Qiao, Chaoyong Wang, Li Zhu
In the cloud environment, application elastic scaling is very important. The number of copies can be dynamically adjusted according to load. A good elastic scaling scheme can not only ensure the stability of application, but also improve resource utilization of platform. The existing responsive scaling strategy of Kubernetes platform has many problems, which can not meet requirements of web system for service quality. This paper optimizes the default elastic scaling scheme in Kubernetes cluster, and proposes a container dynamic scaling scheme LP-HPA (load predict horizon pod autoscaling) based on load prediction. This scheme uses LSTM-GRU model to predict the application load, comprehensively considers predicted data and current data, realizes dynamic scaling of container, and ensures the service quality of application. Finally, by building Kubernetes cluster, this paper uses open source data set to verify the LP-HPA scheme. Experimental results show that our proposed scheme is better than Kubernetes' default scaling scheme in three scenarios: load rise, load drop and load jitter.
在云环境中,应用程序的弹性扩展非常重要。副本数量可以根据负载动态调整。良好的弹性缩放方案不仅可以保证应用的稳定性,还可以提高平台的资源利用率。现有的Kubernetes平台响应式扩展策略存在许多问题,不能满足web系统对服务质量的要求。本文对Kubernetes集群默认弹性扩展方案进行了优化,提出了一种基于负载预测的容器动态扩展方案LP-HPA (load prediction horizon pod autoscaling)。该方案采用LSTM-GRU模型预测应用负载,综合考虑预测数据和当前数据,实现容器的动态扩展,保证应用的服务质量。最后,通过构建Kubernetes集群,利用开源数据集对LP-HPA方案进行验证。实验结果表明,本文提出的方案在负载上升、负载下降和负载抖动三种场景下都优于Kubernetes的默认扩展方案。
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引用次数: 0
A Chronic Disease Medication Data Sharing Model Based on Blockchain 基于区块链的慢性病用药数据共享模型
Xiameng Si, Boyu Liu, Bobai Zhao
Chronic Disease Medication Data (CDMD) includes a great number of valuable patients’ information collected from smart pillboxes. CDMD sharing in the Chronic Disease Medication Compliance Management System is helpful to improve the medical level and service. Blockchain provides a new way to solve the problems, e.g., privacy security, user control rights, and single point of failure, in data sharing. In this paper, we propose a secure CDMD sharing method in a decentralized way based on blockchain and cryptography technology to realize secure data sharing among entities by a model of ’on-chain deposition to confirm rights, off-chain storage of transmission data’. This method can enable secure sharing of medication administration data between institutions, avoiding the trustless problem caused by data centralization.
慢性疾病药物数据(Chronic Disease Medication Data, CDMD)包括从智能药箱中收集的大量有价值的患者信息。慢性疾病用药依从性管理系统中CDMD共享有助于提高医疗水平和服务水平。区块链为解决数据共享中的隐私安全、用户控制权、单点故障等问题提供了一种新的方法。本文提出了一种基于区块链和密码学技术的去中心化安全CDMD共享方法,通过“链上存储确认权限,传输数据链下存储”的模式实现实体间的安全数据共享。该方法可以实现机构间用药管理数据的安全共享,避免数据集中带来的不信任问题。
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引用次数: 0
期刊
Proceedings of the 5th International Conference on Computer Science and Software Engineering
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