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Proceedings of the 2019 3rd International Symposium on Computer Science and Intelligent Control最新文献

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Modal Regression Estimation for Heteroscedastic Single-Index Model 异方差单指标模型的模态回归估计
Waled Khaled, Jinguan Lin
The single-index model is a semi-parametric regression model that avoids the curse of dimensionality because of the linear combination of p-regression coefficients and covariates. Most of the works in this setting done for the homogenous single index models are limited and based on the minimum average conditional variance estimation (MAVE). To overcome these drawbacks, in this paper, we provide a robust and efficient estimate with modal regression for the single-index model under the existence of heteroscedasticity. The EM algorithm and bandwidth selection are employed to prepare the estimation method. Simulation studies demonstrate the performance of the proposed estimation; this method outperforms MAVE in various situations even if the errors are generated from a heavy-tailed distribution while it achieves the same efficiency as well as MAVE for the normally distributed errors. Finally, the application of the proposed method is illustrated by a real example of the heteroscedastic model.
单指标模型是一种半参数回归模型,由于p回归系数和协变量的线性组合,避免了维数的诅咒。在这种情况下,针对同质单指标模型所做的大多数工作都是有限的,并且基于最小平均条件方差估计(MAVE)。为了克服这些缺点,本文利用模态回归对存在异方差的单指标模型进行了稳健有效的估计。利用EM算法和带宽选择来准备估计方法。仿真研究证明了所提估计的有效性;该方法在各种情况下,即使是重尾分布产生的误差也优于MAVE,而对于正态分布的误差,其效率与MAVE相同。最后,通过异方差模型的实例说明了该方法的应用。
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引用次数: 0
Reengineering of the New Customer Gas Connection Process Utilizing Industry 4.0 Technologies: The Greek Case of Public Gas Distribution Networks S.A. 利用工业4.0技术的新客户燃气连接流程再造:希腊公共燃气分销网络公司的案例
N. Panayiotou, V. P. Stavrou, K. Stergiou
The process in order for a future customer (household consumer or business consumer) to be connected to a gas network and address its energy needs requires a difficult, demanding and usually time-consuming sequence of steps. For this reason, both process optimization and minimization of administrative effort are issues of great importance for companies operating gas networks. The present study dealt with the optimization of the abovementioned process (New Customer Gas Connection) regarding a company operating as a natural gas network operator in Greece. For this purpose, interviews were conducted with the company's top management and employees in order to record the current situation (AS-IS) concerning the process. After the implementation of AS-IS analysis, existing process weaknesses were identified and an improved process was designed. At this point, the study introduced Industry 4.0 technologies, which are a developing and hot trend in the last decade, focusing on the use of sensors and actuators in order to automate a series of processes. Industry 4.0 is used mainly in industries, and its methodologies and tools have also been used in the gas industry. During the process reengineering (TO-BE), four Industry 4.0- related domains were identified, in which major improvements could be applied: the use of smart meters in order to measure gas consumption, the use of smart tags in order to manage the maintenance of gas equipment, the use of smart tags in order to control document traceability within the company and the coordination (integration) of the process using appropriate information systems. Based on the above, it is concluded that by using technologies and tools related to Industry 4.0, reorganizing processes and making a sensible investment, long-term savings can be achieved. In addition, the total duration of the process may be significantly reduced. The research effort should be continued by further analyzing more case studies which clarify the role and importance of managing and modeling business processes in conjunction with Industry 4.0, with the final aim of improving processes and performance of companies as a whole.
为了让未来的客户(家庭消费者或企业消费者)连接到天然气网络并解决其能源需求,这一过程需要一个困难、苛刻且通常耗时的步骤序列。因此,对于运营天然气网络的公司来说,流程优化和管理工作量最小化都是非常重要的问题。本研究涉及希腊一家天然气网络运营商公司的上述过程(新客户天然气连接)的优化。为此,与公司高层管理人员和员工进行了访谈,以记录有关该过程的现状。在实施AS-IS分析后,发现了现有流程的弱点,并设计了改进的流程。在这一点上,该研究介绍了工业4.0技术,这是过去十年发展和热门的趋势,重点是使用传感器和执行器来实现一系列流程的自动化。工业4.0主要应用于工业领域,其方法和工具也被用于天然气行业。在流程再造(将来)过程中,确定了四个与工业4.0相关的领域,其中可以应用重大改进:使用智能仪表来测量燃气消耗,使用智能标签来管理燃气设备的维护,使用智能标签来控制公司内部的文件可追溯性,以及使用适当的信息系统来协调(集成)流程。综上所述,通过使用与工业4.0相关的技术和工具,重组流程并进行合理的投资,可以实现长期的节省。此外,该过程的总持续时间可能会大大减少。研究工作应该通过进一步分析更多的案例研究来继续,这些案例研究阐明了与工业4.0相结合的管理和建模业务流程的作用和重要性,最终目标是改善整个公司的流程和绩效。
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引用次数: 1
A Secure CBIR Method based on Bag-of-Visual-Words Model under Cloud Environment 云环境下基于视觉词袋模型的安全CBIR方法
Yanyan Xu, Xiao Zhao, Jiaying Gong
Cloud computing platform has powerful computing capacity and nearly infinite resource pool, which provides a strong guarantee for mass data storage and computing. Considering double security threats from malicious external attackers and "honest-but-curious" CSP (cloud service provider), users need to encrypt images to ensure the data security before outsourcing images to cloud. But encryption can have an impact on the necessary data services, such as content based image retrieval (CBIR). A secure CBIR method based on BoVW (Bag of Visual Words) model under cloud environment is proposed in the paper. Images are expressed as frequency histogram by BoVW model, orthogonal decomposition is utilized to divide it into two individual parts of component coefficients thus encryption operation and feature extraction operation can be executed separately, and orthogonal composition is used to fuse the encrypted operation results to construct secure image index. After encrypted image index and encrypted images are outsourced to CSP, distance comparison can be executed by CSP on feature extraction field without violating data privacy. Encrypted images with the closest distance to query trapdoor are returned to users to decrypt and obtain plain images. Any encryption algorithms can be used to encrypt images and search index by using orthogonal transformation, so that the proposed method is practicable. Retrieval precision is improved and better performance are achieved by using BoVW model. The security analysis and experimental results show our scheme has obvious advantages in security and retrieval performance.
云计算平台具有强大的计算能力和近乎无限的资源池,为海量数据的存储和计算提供了强有力的保障。考虑到恶意外部攻击者和“诚实但好奇”的云服务提供商CSP (cloud service provider)的双重安全威胁,用户在将图像外包给云之前,需要对图像进行加密,以确保数据安全。但是加密可能会对必要的数据服务产生影响,例如基于内容的图像检索(CBIR)。提出了一种基于BoVW (Bag of Visual Words)模型的云环境下安全的CBIR方法。采用BoVW模型将图像表示为频率直方图,利用正交分解将其分解为分量系数的两个独立部分,从而可以分别进行加密操作和特征提取操作,并利用正交组合将加密操作结果融合,构建安全的图像索引。加密图像索引和加密图像外包给CSP后,CSP可以在不侵犯数据隐私的情况下对特征提取领域进行距离比较。将与查询trapdoor距离最近的加密图像返回给用户解密,得到明文图像。任何加密算法都可以使用正交变换对图像进行加密和搜索索引,因此该方法是可行的。采用BoVW模型提高了检索精度,取得了较好的检索性能。安全性分析和实验结果表明,该方案在安全性和检索性能方面具有明显的优势。
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引用次数: 0
A Computationally Efficient Tracking Scheme for Localization of Soccer Players in an Aerial Video Sequence 航拍视频序列中足球运动员定位的高效跟踪方法
R. Aoki, T. Oki, Hiro Yokokawa, R. Miyamoto
The authors attempted to construct a novel sensor networking system that estimates locations of sensor nodes as locations of humans wearing them via image processing. In this application, computationally efficient human localization is indispensable because the operation should be executed on embedded systems. To actualize human localization at a lower computational cost, this study proposes a novel tracking scheme using only detection results. Experimental results using the computer graphics (CG) dataset that was created using player locations of an actual soccer game showed that the proposed scheme outperformed existing schemes implemented in the OpenCV library.
作者试图构建一个新的传感器网络系统,该系统通过图像处理将传感器节点的位置估计为佩戴它们的人的位置。在这种应用中,计算效率高的人类定位是必不可少的,因为操作应该在嵌入式系统上执行。为了以更低的计算成本实现人体定位,本研究提出了一种新的仅使用检测结果的跟踪方案。利用实际足球比赛中球员位置创建的计算机图形(CG)数据集的实验结果表明,所提出的方案优于OpenCV库中实现的现有方案。
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引用次数: 1
Securitization and Criminalization of Migrants in Bosnia and Herzegovina 波斯尼亚和黑塞哥维那境内移徙者的证券化和刑事定罪
Armin Kržalić, Nedzad Korajlic, S. Dinarevic
The paper explores the nature and trend of migration during 2018, on the example of Bosnia and Herzegovina. The politicization of migrants' issues as well as a number of other factors contributed to the attitude of criminalization and securitization of migrants. Most authors and researchers dealing with the issue of migrants as well as the security representatives themselves argue that migrants are not a security threat to Bosnia and Herzegovina and that the state should treat them humanely and treat them according to international standards. In this paper we have determined that it is necessary to work on building additional capacities to accommodate migrants who have not found any accommodation or are on routes of Bosnia and Herzegovina, and that is important to undertake activities on technical, material and financial support for migration management in Bosnia and Herzegovina. We have used a qualitative research approach with the use of interview techniques and desk analysis for the purpose of collecting and processing primary and secondary data.
本文以波斯尼亚和黑塞哥维那为例,探讨了2018年移民的性质和趋势。移民问题的政治化以及一些其他因素促成了对移民的刑事定罪和证券化的态度。大多数处理移民问题的作者和研究人员以及安全代表本身都认为,移民对波斯尼亚和黑塞哥维那不是安全威胁,国家应该人道地对待他们,并按照国际标准对待他们。在本文件中,我们已经确定,必须努力建立额外的能力,以容纳没有找到任何住处或在波斯尼亚-黑塞哥维那路线上的移徙者,这对于开展为波斯尼亚-黑塞哥维那境内的移徙管理提供技术、物质和财政支助的活动是重要的。我们使用了定性研究方法,使用访谈技术和案头分析来收集和处理主要和次要数据。
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引用次数: 0
Cyber-Physical System Fusion Modeling and Simulation Method 信息物理系统融合建模与仿真方法
Lijin Wu, Guoqiang Gu, Weihua Zhang
Aiming at the digital design of typical Cyber-Physical System (CPS) and the construction requirements of Digital Twin System, this paper studies the fusion modeling and simulation method of CPS, including fusion modeling framework and model description, Cyber model and Physical model interface and interoperability mechanism, coordination and fusion simulation method for CPS heterogeneity model, etc. The modeling and simulation of Cyber-Physical System provides a theoretical and methodological basis for model-based design verification, evaluation and optimization of complex equipment.
针对典型的信息物理系统(Cyber-Physical System, CPS)的数字化设计和数字孪生系统的构建需求,研究了CPS的融合建模与仿真方法,包括融合建模框架与模型描述、Cyber模型与Physical模型的接口与互操作机制、CPS异构模型的协调与融合仿真方法等。信息物理系统的建模与仿真为复杂装备基于模型的设计验证、评估与优化提供了理论和方法依据。
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引用次数: 2
Using Graph Representations for Semantic Information Extraction from Chinese Patents 基于图表示的中文专利语义信息提取
Wei Ding, Junli Wang, Haohao Zhu
This paper proposes a graph representation approach to automatically extract semantic information from Chinese patents, which can be used to provide semantic support for text-content based patent intelligent analysis. Two graph models are devised using graph representations, i.e., a keyword based text graph model and a dependency tree based text graph model. The first graph model is constructed by computing the similarities between two keywords, while the second graph model is constructed by extracting syntactic relations from text sentences. In the case study a frequent subgraph mining algorithm is utilized to discover frequent subgraph patterns based on the above two models, and such patterns were further used as features to build text classifiers for the purpose of testing the expressivity and effectiveness of the proposed graph models. The experimental results proves the validation of the proposed graph representation methods.
本文提出了一种自动提取中文专利语义信息的图表示方法,可为基于文本内容的专利智能分析提供语义支持。使用图表示设计了两种图模型,即基于关键字的文本图模型和基于依赖树的文本图模型。第一个图模型是通过计算两个关键词之间的相似度来构建的,第二个图模型是通过从文本句子中提取句法关系来构建的。在案例研究中,利用频繁子图挖掘算法在上述两种模型的基础上发现频繁子图模式,并将这些模式作为特征构建文本分类器,以测试所提出的图模型的表达能力和有效性。实验结果证明了所提出的图表示方法的有效性。
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引用次数: 3
Trend Analyses for Blockchain Technology Innovations Using Data Analytics 使用数据分析进行区块链技术创新的趋势分析
Raymund Herradura, F. Thabtah, M. Andrews
Data Visualisations have been identified to play a critical role in business decision making, wherein it acts as a bridge between decision makers and the vast amount of unstructured data. Blockchain applications are being carefully assimilated into the technological space due to Bitcoin's rapid rise in the financial market. Consequently, researchers, technologists and cryptocurrency investors can understand the posture of this technology that leads to articulate technological and financial investment strategies. This paper investigates the role of data analyses in the prominent implementation of Blockchain. We characterise the adoption of Blockchain technology by analysing two types of datasets which are text and multivariate by fitting multiple time series and geographical location to reveal unrealised opportunities for potential income and innovation. In addition, to obtain the useful trends over time a temporal data analyses to fit the Twitter dataset, was conducted. With the automated knowledge discovered this will supplement the decision makers' demand to have a valuable data-driven business strategy, which in return will deliver business or investment opportunities.
数据可视化在商业决策中起着至关重要的作用,它是决策者与大量非结构化数据之间的桥梁。由于比特币在金融市场的迅速崛起,区块链应用程序正在被仔细地吸收到技术领域。因此,研究人员、技术专家和加密货币投资者可以了解这项技术的现状,从而明确技术和金融投资策略。本文探讨了数据分析在区块链突出实施中的作用。我们通过分析文本和多变量两种类型的数据集来描述区块链技术的采用,通过拟合多个时间序列和地理位置来揭示潜在收入和创新的未实现机会。此外,为了获得随时间的有用趋势,进行了适合Twitter数据集的时间数据分析。随着自动化知识的发现,这将补充决策者对有价值的数据驱动业务战略的需求,这反过来将提供业务或投资机会。
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引用次数: 0
10Gbps Real-time OFDM Wireless Communication System 10Gbps实时OFDM无线通信系统
Jianbin Zou, K. Gao, Erbao Li
This paper presents a 10 Gbps real-time millimeter wave OFDM experimental system using a highly efficient 64APSK modulation and 7/8 rate LDPC coding scheme. For the sensitivity of phase noise and the high peak to average power ratio (PAPR) in OFDM systems, common phase error (CPE) compensation algorithm and partial transmit sequence (PTS) PAPR suppression algorithm are implemented in this system. In this paper, a real-time 10Gbps 64-APSK end to end wireless transmission experiment system using reconfigurable Field Programmable Gate Array (FPGA) baseband modulator has built to verify the feasibility and effectiveness of our scheme.
提出了一种采用高效64APSK调制和7/8 LDPC编码方案的10gbps实时毫米波OFDM实验系统。针对OFDM系统中相位噪声的敏感性和峰值平均功率比(PAPR)的高特性,在系统中实现了共相位误差(CPE)补偿算法和部分发射序列(PTS) PAPR抑制算法。本文利用可重构现场可编程门阵列(FPGA)基带调制器构建了10Gbps 64-APSK实时端到端无线传输实验系统,验证了该方案的可行性和有效性。
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引用次数: 1
A Comparison of Software Quality Characteristics and Software Sustainability Characteristics 软件质量特征与软件可持续性特征的比较
Sulaiman Aljarallah, R. Lock
Software sustainability has generated much interest in the software engineering field in recent times, and has been widely investigated across different fields and from different standpoints. The relationship between software quality and software sustainability is still an open question. In this study, a literature survey and comparison was conducted using three-phases, having as a starting point the comparison of basic models for software quality. A follow-up study, conducted at a more comprehensive level to cover both basic models and the most cited tailored models., Software sustainability literature is investigated to find the most frequent characteristics. Finally, data gathered from these studies and a comparison shows a similarity in the top level of these characteristics between software sustainability and software quality, and the emphasis on sustainability, maintainability and portability. The study suggests that ISO 25010 can be utilised by software sustainability. As a future work, the findings will be investigated empirically to support designing software sustainability framework identifying the most important criteria in the technical dimension.
近年来,软件可持续性在软件工程领域引起了很大的兴趣,并在不同的领域和不同的立场上进行了广泛的研究。软件质量和软件可持续性之间的关系仍然是一个悬而未决的问题。在本研究中,以比较软件质量的基本模型为出发点,分三个阶段进行文献调查和比较。后续研究,在更全面的层面上进行,涵盖基本模型和被引用最多的定制模型。研究了软件可持续性文献,找出了最常见的特征。最后,从这些研究中收集的数据和比较表明,软件可持续性和软件质量在这些特征的顶层是相似的,并且强调可持续性、可维护性和可移植性。研究表明,ISO 25010可用于软件可持续性。作为未来的工作,研究结果将进行实证调查,以支持设计软件可持续性框架,确定技术维度中最重要的标准。
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引用次数: 3
期刊
Proceedings of the 2019 3rd International Symposium on Computer Science and Intelligent Control
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