检索结果-内蒙古大学图书馆

arXiv 2018年

作者： Chen, Yao Xia, Weiguo Cao, Ming Lü, Jinhu Department of Computer Science Southwestern University of Finance and Economics Chengdu611130 China School of Control Science and Engineering Dalian University of Technology Dalian116024 China Faculty of Science and Engineering ENTEG University of Groningen Groningen9747 AG Netherlands School of Automation Science and Electrical Engineering State Key Laboratory of Software Development Environment Beijing Advanced Innovation Center for Big Data and Brain Computing Beihang University Beijing100191 China Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing100190 China

Distributed coordination algorithms (DCA) carry out information processing processes among a group of networked agents without centralized information fusion. Though it is well known that DCA characterized by an SIA (stochastic, indecomposable, aperiodic) matrix generate consensus asymptotically via synchronous iterations, the dynamics of DCA with asynchronous iterations have not been studied extensively, especially when viewed as stochastic processes. This paper aims to show that for any given irreducible stochastic matrix, even non-SIA, the corresponding DCA lead to consensus successfully via random asynchronous iterations under a wide range of conditions on the transition probability. Particularly, the transition probability is neither required to be independent and identically distributed, nor characterized by a Markov chain. Copyright © 2018, The Authors. All rights reserved.

关键词： Stochastic systems

来源：评论

学校读者我要写书评

暂无评论

Information Leakage Problem in High-Capacity Quantum Secure Communication with Authentication Using Einstein-Podolsky-Rosen Pairs

引用

Chinese Physics Letters 2016年第7期33卷 14-15页

作者：刘志昊陈汉武刘文杰 School of Computer Science and Engineering Southeast University Key Laboratory of Computer Network and Information Integration(Ministry of Education) Southeast University Centre for Quantum Computation and Intelligent Systems Faculty of Engineering and Information TechnologyUniversity of Technology Sydney School of Computer and Software Nanjing University of Information Science & Technology

The information leakage problem often exists in bidirectional quantum secure direct communication or quantum dialogue. In this work, we find that this problem also exists in the one-way quantum secure communication protocol [Chin. Phys. Lett. 32 （2015） 050301]. Specifically, the first bit of every four-bit message block is leaked out without awareness. A way to improve the information leakage problem is given.

关键词： in or of is that with

来源：评论

学校读者我要写书评

暂无评论

A Pattern Division Multiple Access Scheme with Low Complexity Iterative Receiver for 5G Wireless Communication systems

A Pattern Division Multiple Access Scheme with Low Complexit...

引用

IEEE Vehicular Technology Conference

作者： Kai Zhang Jin Xu Changchuan Yin Chunyu Pan Weiqiang Tan Guixian Xu Beijing University of Posts and Telecommunications Beijing Key Laboratory of Network System Architecture and Convergence Beijing 100876 P. R. China Zhengzhou University of Light Industry School of Computer and Communication Engineering Zhengzhou 450001 P. R. China Guangzhou University School of Computer Science and Educational Software Guangzhou 510006 P. R. China Aalborg University Department of Electronic Systems Aalborg 9400 Denmark

ISBN: (纸本)9781538663592;9781538663585

Non-orthogonal multiple access schemes with higher spectral efficiency and the capability of accessing more users than orthogonal multiple access (OMA) scheme is preferred for the fifth generation (5G) wireless networks. In this work, a non-orthogonal transmission scheme called pattern division multiple access (PDMA) is proposed for the 5G wireless communication systems. Two pattern matrices are proposed for 150% and 200% overloaded PDMA systems. Then, a low complexity symbol-wise belief propagation iterative detection and decoding (BPIDD) algorithm for multiple user detection is proposed. Numerical results and analysis provided by utilizing extrinsic information transfer chart show that the proposed scheme outperforms the traditional OMA systems significantly, and the performance of the proposed scheme is better than that of the existing schemes up to 1 dB. Finally, simulation results show that the proposed scheme is superior to the existing schemes and the proposed BPIDD algorithm is better than that of the BP algorithm over 0.5 dB.

关键词： 5G mobile communication iterative decoding matrix algebra multi-access systems multiuser detection Multi access systems matrix algebra Multiuser detection Iterative decoding multiple access Wireless communication systems Scheme iterative receiver spectral efficiency Information Transfer

来源：评论

学校读者我要写书评

暂无评论

Users’ perceived control, trust and expectation on privacy settings of smartphone 9th

Users’ perceived control, trust and expectation on privacy ...

引用

9th International Symposium on Cyberspace Safety and Security, CSS 2017

作者： Zhou, Yun Raake, Alexander Xu, Tao Zhang, Xuyun School of Education Shaanxi Normal University Xi’anShaanxi710062 China Audiovisual Technology Group Institute for Media Technology University of Technology Ilmenau Ilmenau98693 Germany School of Software and Microelectronics Northwestern Polytechnical University Xi’anShaanxi710072 China State Key Laboratory for Manufacturing Systems Engineering Xi’an Jiaotong University Xi’anShaanxi710054 China Department of Electrical and Computer Engineering University of Auckland Auckland1010 New Zealand

ISBN: (纸本)9783319694702

A common issue is that a large number of authorized apps use important and sensitive personal information without arousing users’ full awareness. Existing schemes for privacy protection on smartphones try to provide users with privacy settings to control privacy leakage. Privacy settings on smartphone are intended to inform users about risks of privacy leakage and let users take over control of smartphone. Therefore, it is essential to understand and measure how much users perceive and trust these settings. To this end, we design and conduct a fine-grained online survey with 222 respondents. We collect the demographics as well as users’ smartphone usage, covering not only participants’ basic background information like age, gender, job, but also time of smartphone use per day, respective importance and sensitivity level of personal data, and their smartphone OSs. In this paper, we investigate users’ current privacy perception and protection on smartphone in different groups, discussing participants’ responses to (1) Rating the importance and sensitivity of personal information;(2) Trust on existing privacy protection;(3) Perceived control on smartphone;(4) Frequency of searching privacy knowledge;(5) Concerns about manufacturer and third-party company’s behaviors on personal data and decision. © 2017, Springer International Publishing AG.

关键词： Surveys

来源：评论

学校读者我要写书评

暂无评论

Understanding feature requests by leveraging fuzzy method and linguistic analysis 17

Understanding feature requests by leveraging fuzzy method an...

引用

IEEE International Conference on Automated software engineering (ASE)

作者： Lin Shi Celia Chen Qing Wang Shoubin Li Barry Boehm Laboratory for Internet Software Technologies Institute of Software Chinese Academy of Sciences Beijing China University of Chinese Academy of Sciences Beijing China Department of Computer Science Occidental College Los Angeles CA Center for Systems and Software Engineering University of Southern California Los Angeles USA State Key Laboratory of Computer Sciences Institute of Software Chinese Academy of Sciences Beijing China

ISBN: (纸本)9781538626849

In open software development environment, a large number of feature requests with mixed quality are often posted by stakeholders and usually managed in issue tracking systems. Thoroughly understanding and analyzing the real intents that feature requests imply is a labor-intensive and challenging task. In this paper, we introduce an approach to understand feature requests automatically. We generate a set of fuzzy rules based on natural language processing techniques that classify each sentence in feature requests into a set of categories: Intent, Explanation, Benefit, Drawback, Example and Trivia. Consequently, the feature requests can be automatically structured based on the classification results. We conduct experiments on 2,112 sentences taken from 602 feature requests of nine popular open source projects. The results show that our method can reach a high performance on classifying sentences from feature requests. Moreover, when applying fuzzy rules on machine learning methods, the performance can be improved significantly.

关键词： Pragmatics software Terminology Semantics Syntactics Natural language processing Learning systems

来源：评论

学校读者我要写书评

暂无评论

Joint product numerical range and geometry of reduced density matrices

引用

Science China(Physics,Mechanics & Astronomy) 2017年第2期60卷 9-17页

作者： Jianxin Chen Cheng Guo Zhengfeng Ji Yiu-Tung Poon Nengkun YU Bei Zeng Jie Zhou Joint Center for Quantum Information and Computer Science University of Maryland College Park 20740 USA Institute for Advanced Study Tsinghua University Beijing 100084 China Centre for Quantum Computation ＆ Intelligent Systems School of Software Faculty of Engineering and Information Technology University of Technology Sydney Sydney 2007 Australia State Key Laboratory of Computer Science.Institute of Software Chinese Academy of Sciences Beijing 100084 China Department of Mathematics Iowa State University Ames 50011-2140 USA Institute for Quantum Computing University of Waterloo Waterloo N2L 3G1 Canada Department of Mathematics ＆ Statistics University of Guelph Guelph N1G 2 W1 Canada Perimeter Institute for Theoretical Physics Waterloo N2L 2Y5 Canada

The reduced density matrices of a many-body quantum system form a convex set, whose three-dimensional projection is convex in R3. The boundary of may exhibit nontrivial geometry, in particular ruled surfaces. Two physical mechanisms are known for the origins of ruled surfaces： symmetry breaking and gapless. In this work, we study the emergence of ruled surfaces for systems with local Hamiltonians in infinite spatial dimension, where the reduced density matrices are known to be separable as a consequence of the quantum de Finetti＇s theorem. This allows us to identify the reduced density matrix geometry with joint product numerical range II of the Hamiltonian interaction terms. We focus on the case where the interaction terms have certain structures, such that a ruled surface emerges naturally when taking a convex hull of ∏. We show that, a ruled surface on sitting in ∏ has a gapless origin, otherwise it has a symmetry breaking origin. As an example, we demonstrate that a famous ruled surface, known as the oloid, is a possible shape of , with two boundary pieces of symmetry breaking origin separated by two gapless lines.

关键词： reduced density matrices quantum tomography numerical range quantum information oloid ruled surface

来源：评论

学校读者我要写书评

暂无评论

Physical origins of ruled surfaces on the reduced density matrices geometry

引用

Science China(Physics,Mechanics & Astronomy) 2017年第2期60卷 1-8页

作者： Ji-Yao Chen Zhengfeng Ji Zheng-Xin Liu Xiaofei Qi Nengkun Yu Bei Zeng Duanlu Zhou State Key Laboratory of Low Dimensional Quantum Physics Department of Physics Tsinghua University Beijing 100084 China Perimeter Institute for Theoretical Physics Waterloo N2L 2Y5 Canada Centre for Quantum Computation ＆ Intelligent Systems School of Software Faculty of Engineering and Information Technology University of Technology Sydney Sydney 2007 Australia State Key Laboratory of Computer Science Institute of Software Chinese Academy of Sciences Beijing 100190 China Department of Physics Renmin University of China Beijing 100872 China Department of Mathematics Shanxi University Taiyuan 030000 China Institute for Quantum Computing University of Waterloo Waterloo N2L 3G1 Canada Department of Mathematics ＆ Statistics University of Guelph Guelph N1G 2W1 Canada Institute of Physics Chinese Academy of Sciences Beijing 100190 China

The reduced density matrices （RDMs） of many-body quantum states form a convex set. The boundary of low dimensional projections of this convex set may exhibit nontrivial geometry such as ruled surfaces. In this paper, we study the physical origins of these ruled surfaces for bosonic systems. The emergence of ruled surfaces was recently proposed as signatures of symmetry- breaking phase. We show that, apart from being signatures of symmetry-brealdng, ruled surfaces can also be the consequence of gapless quantum systems by demonstrating an explicit example in terms of a two-mode Ising model. Our analysis was largely simplified by the quantum de Finetti＇s theorem--in the limit of large system size, these RDMs are the convex set of all the symmetric separable states. To distinguish ruled surfaces originated from gapless systems from those caused by symmetry- breaking, we propose to use the finite size scaling method for the corresponding geometry. This method is then applied to the two-mode XY model, successfully identifying a ruled surface as the consequence of gapless systems.

关键词： ruled surfaces reduced density matrices bosonic system geometry

来源：评论

学校读者我要写书评

暂无评论

Bayesian Modeling of COTS Power MOSFET Ionizing Dose Impact on Circuit Response

Bayesian Modeling of COTS Power MOSFET Ionizing Dose Impact ...

引用

European Conference on Radiation and its Effects on Components and systems (RADECS)

作者： A. F. Witulski M. B. Smith N. Mahadevan A. L. Sternberg C. Barnes D. Sheldon R. D. Schrimpf G. Karsai M. W. McCurdy Department of Electrical Engineering and Computer Science Vanderbilt University USA Department of Electrical Engineering and Computer Science Vanderbilt University Nashville CA Office of Safety and Mission Success Jet Propulsion Laboratory 4800 Oak Grove Drive Pasadena USA Institute for Software Integrated Systems at Vanderbilt University

Threshold voltage variation with ionizing dose was measured for a commercial power MOSFET. Variation of radiation response was captured using a Bayesian linear model, which enabled a Monte Carlo simulation of variatio... 详细信息

ISBN: (纸本)9781538612620;9781538612613

关键词： Threshold voltage Semiconductor device modeling Bayes methods Integrated circuit modeling MOSFET Degradation

来源：评论

学校读者我要写书评

暂无评论

Improving missing issue-commit link recovery using positive and unlabeled data 17

Improving missing issue-commit link recovery using positive ...

引用

IEEE International Conference on Automated software engineering (ASE)

作者： Yan Sun Celia Chen Qing Wang Barry Boehm Laboratory for Internet Software Technologies State Key Laboratory of Computer Science Institute of Software Chinese Academy of Sciences Beijing P.R. China University of Chinese Academy of Sciences Beijing P.R. China Department of Computer Science Occidental College Los Angeles CA Center for Systems and Software Engineering University of Southern California Los Angeles USA

ISBN: (纸本)9781538626849

Links between issue reports and corresponding fix commits are widely used in software maintenance. The quality of links directly affects maintenance costs. Currently, such links are mainly maintained by error-prone manual efforts, which may result in missing links. To tackle this problem, automatic link recovery approaches have been proposed by building traditional classifiers with positive and negative links. However, these traditional classifiers may not perform well due to the inherent characteristics of missing links. Positive links, which can be used to build link recovery model, are quite limited as the result of missing links. Since the construction of negative links depends on the number of positive links in many existing approaches, the available negative links also become restricted. In this paper, we point out that it is better to consider the missing link problem as a model learning problem by using positive and unlabeled data, rather than the construction of traditional classifier. We propose PULink, an approach that constructs the link recovery model with positive and unlabeled links. Our experiment results show that compared to existing state-of-the-art technologies built on traditional classifier, PULink can achieve competitive performance by utilizing only 70% positive links that are used in those approaches.

关键词： Feature extraction Indexes Metadata Training software maintenance

来源：评论

学校读者我要写书评

暂无评论

software industry experience for high school students 123

Software industry experience for high school students

引用

123rd ASEE Annual Conference and Exposition

作者： Towhidnejad, Massood Spradlin, Alexandria Bassa, Thomas Rogers Embry-Riddle Aeronautical University Department of Electrical Computer Software and Systems Engineering Daytona Beach United States Laboratory United States

High school students typically do not have an understanding of what it takes to successfully transition between the high school and professional world. This paper describes how a group of ten high school students participated in a nine-week software development internship program. The interns worked on developing a semi-autonomous vehicle to be controlled remotely by a ground station. They went through the full development life-cycle using formal agile process. The participants gained experience in project management, and how to negotiate with the customer to reduce the complexity of the project to an achievable scope, given available resources (time, personnel, and cost). © American Society for engineering Education, 2016.

关键词：

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：