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arXiv 2022年

作者： Zhang, Jiayi Zhang, Jing Björnson, Emil Ai, Bo The School of Electronic and Information Engineering Beijing Jiaotong University Beijing100044 China The Frontiers Science Center for Smart High-Speed Railway System Beijing Jiaotong University Beijing100044 China The Department of Electrical Engineering Linköping University Linköping Sweden The Department of Computer Science KTH Royal Institute of Technology Kista Sweden The State Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong University Beijing100044 China The Frontiers Science Center for Smart High-Speed Railway System Henan Joint International Research Laboratory of Intelligent Networking and Data Analysis Zhengzhou University Zhengzhou450001 China Research Center of Networks and Communications Peng Cheng Laboratory Shenzhen China

Cell-free massive multiple-input multiple-output (MIMO) provides more uniform spectral efficiency (SE) for users (UEs) than cellular technology. The main challenge to achieve the benefits of cell-free massive MIMO is to realize signal processing in a scalable way. In this paper, we consider scalable full-pilot zero-forcing (FZF), partial FZF (PFZF), protective weak PFZF (PWPFZF), and local regularized ZF (LRZF) combining by exploiting channel statistics. We derive closed-form expressions of the uplink SE for FZF, PFZF, and PWPFZF combining with large-scale fading decoding over independent Rayleigh fading channels, taking channel estimation errors and pilot contamination into account. Moreover, we investigate the impact of the number of pilot sequences, antennas per AP, and APs on the performance. Numerical results show that LRZF provides the highest SE. However, PWPFZF is preferable when the number of pilot sequences is large and the number of antennas per AP is small. The reason is that PWPFZF has lower computational complexity and the SE expression can be computed in closed-form. Furthermore, we investigate the performance of PWPFZF combining with fractional power control and the numerical results show that it improves the performance of weak UEs and realizes uniformly good service for all UEs in a scalable fashion. Copyright © 2022, The Authors. All rights reserved.

关键词： Power control

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征信数据的关联规则挖掘方法研究

征信数据的关联规则挖掘方法研究

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第18届全国计算机新科技与计算机教育学术大会

作者： YOU Chuiju 尤垂桔 CHEN Xin 陈昕 School of Economical Management Beijing Institute of machineBeijing100086 北京机械工业学院经济管理学院北京100086 Computer Information System Department Beijing Information Technology InstituteBeijing100101 北京信息工程学院计算机信息系统系北京100101

中国人民银行征信系统自从2006年开通运行以来，受到了金融业人士的广泛关注。本文以人民银行个人信用信息数据为数据平台，展开关联规则挖掘研究。首先阐述了关联规则的基本概念，分析了关联规则挖掘的基本算法。然后从实际应用的角度... 详细信息

中国人民银行征信系统自从2006年开通运行以来，受到了金融业人士的广泛关注。本文以人民银行个人信用信息数据为数据平台，展开关联规则挖掘研究。首先阐述了关联规则的基本概念，分析了关联规则挖掘的基本算法。然后从实际应用的角度，对数据预处理，关联规则挖掘算法进行研究，最后实现了一个挖掘系统。

关键词：征信数据关联规则挖掘算法系统设计

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AI in Video Analysis, Production and Streaming Delivery

引用

Journal of Physics: Conference Series 2020年第1期1712卷

作者： A. Jayanthiladevi Arun Gnana Raj R Narmadha Sajin Chandran Sai Shaju K Krishna Prasad Professor-Computer Science & Information Science Srinivas University Karnataka India Solution Architect Qanawat LLC Dubai UAE Assistant Professor Sathyabama Institute of Science and Technology Tamilnadu India Video Editor Sai Brothers Media Tamilnadu India Sound Engineer Sai Brothers Media Tamilnadu India Associate Professor-Computer Science & Information Science Srinivas University Karnataka India

Video technologies evolve steadily with the evolution of machine learning and artificial intelligence which use cloud platform and video transcoding for better video production, delivery and live streaming. AI has profound effect on media and film industry, from content delivery to viewer's experience. AI serves the richer and realistic experiences in personalization of user experience for video production and analysis process. AI changes the fact of manual tasks and facilitates deep content indexing. Quality assessment becomes easier when AI scrutinizes the content. Personal and interactive video provides new delightful viewing experiences. AI generates new level of interactions at scene by dichotomizing the videos and builds more practical access methods within the content.

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Coalition game based user association for mmWave mobile relay systems in rail traffic scenarios

arXiv

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arXiv 2021年

作者： Chen, Chen Niu, Yong Mao, Shiwen Zhang, Xiaodan Han, Zhu Ai, Bo Gao, Meilin Xiao, Huahua Wang, Ning The State Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong University Beijing100044 China The Frontiers Science Center for Smart High-Speed Railway System Beijing Jiaotong University Beijing100044 China The National Mobile Communications Research Laboratory Southeast University Nanjing211189 China The Department of Electrical and Computer Engineering Auburn University AuburnAL36849-5201 United States The School of Management Shenzhen Institute of Information Technology Shenzhen518172 China The Department of Electrical and Computer Engineering The University of Houston HoustonTX77004 United States The Department of Computer Science and Engineering Kyung Hee University Seoul446-701 Korea Republic of The Beijing Engineering Research Center of High-Speed Railway Broadband Mobile Communications Beijing Jiaotong University Beijing100044 China The Tsinghua Space Center Tsinghua University Beijing100091 China The ZTE Corporation State Key Laboratory of Mobile Network Mobile Multimedia Technology Shenzhen518057 China The School of Information Engineering Zhengzhou University Zhengzhou450001 China

Rail transportation, especially, high-speed rails (HSR), is an important infrastructure for the development of national economy and the promotion of passenger experience. Due to the large bandwidth, millimeter wave (mmWave) communication is regarded as a promising technology to meet the demand of high data rates. However, since mmWave communication has the characteristic of high attenuation, mobile relay (MR) is considered in this paper. Also, full-duplex (FD) communications have been proposed to improve the spectral efficiency. However, because of the high speed, as well as the problem of penetration loss, passengers on the train have a poor quality of service. Consequently, an effective user association scheme for HSR in mmWave band is necessary. In this paper, we investigate the user association optimization problem in mmWave mobile relay systems where the MRs operate in the FD mode. To maximize the system capacity, we propose a cooperative user association approach based on coalition formation game, and develop a coalition formation algorithm to solve the challenging NP-hard problem. We also prove the convergence and Nash-stable property of the proposed algorithm. Extensive simulations are done to show the system performance of the proposed scheme under various network settings. It is demonstrated that the proposed distributed low complexity scheme achieves a near-optimal performance and outperforms two baseline schemes in terms of average system throughput. Copyright © 2021, The Authors. All rights reserved.

关键词： Game theory

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Is the winner really the best? A critical analysis of common research practice in biomedical image analysis competitions

arXiv

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arXiv 2018年

作者： Maier-Hein, Lena Eisenmann, Matthias Reinke, Annika Onogur, Sinan Stankovic, Marko Scholz, Patrick Arbel, Tal Bogunovic, Hrvoje Bradley, Andrew P. Carass, Aaron Carolin Feldmann Frangi, Alejandro F. Ful, Peter M. van Ginneken, Bram Hanbury, Allan Honauer, Katrin Kozubek, Michal Landman, Bennett A. Marz, Keno Maier, Oskar Maier-Hein, Klaus Menze, Bjoern H. Müller, Henning Neher, Peter F. Niessen, Wiro Rajpoot, Nasir Sharp, Gregory C. Sirinukunwattana, Korsuk Speidel, Stefanie Stock, Christian Stoyanov, Danail Taha, Abdel Aziz van der Sommen, Fons Wang, Ching-Wei Weber, Marc-André Zheng, Guoyan Jannin, Pierre Kopp-Schneider, Annette Heidelberg Germany Centre for Intelligent Machines McGill University MontrealQC Canada Christian Doppler Laboratory for Ophthalmic Image Analysis Department of Ophthalmology Medical University Vienna Vienna Austria Science and Engineering Faculty Queensland University of Technology BrisbaneQLD Australia Department of Electrical and Computer Engineering Department of Computer Science Johns Hopkins University Baltimore United States CISTIB Centre for Computational Imaging and Simulation Technologies in Biomedicine University of Sheffield Sheffield United Kingdom Department of Radiology and Nuclear Medicine Medical Image Analysis Radboud University Center Nijmegen Netherlands Institute of Information Systems Engineering TU Wien Vienna Austria Heidelberg University Heidelberg Germany Centre for Biomedical Image Analysis Masaryk University Brno Czech Republic Electrical Engineering Vanderbilt University NashvilleTN United States Institute of Medical Informatics Universität zu Lübeck Lübeck Germany Heidelberg Germany Institute for Advanced Studies Department of Informatics Technical University of Munich Munich Germany Information System Institute HES-SO Sierre Switzerland Departments of Radiology Nuclear Medicine and Medical Informatics Erasmus MC Rotterdam Netherlands Department of Computer Science University of Warwick Coventry United Kingdom Department of Radiation Oncology Massachusetts General Hospital BostonMA United States Institute of Biomedical Engineering University of Oxford Oxford United Kingdom National Center for Tumor Diseases Dresden Dresden Germany Heidelberg Germany Department of Computer Science University College London London United Kingdom Data Science Studio Research Studios Austria FG Vienna Austria Department of Electrical Engineering Eindhoven University of Technology Eindhoven Netherlands AIExplore NTUST Center of Computer Vision and Medical Imaging Graduate Institute of Biomedical Engineering National Ta

International challenges have become the standard for validation of biomedical image analysis methods. Given their scientific impact, it is surprising that a critical analysis of common practices related to the organization of challenges has not yet been performed. In this paper, we present a comprehensive analysis of biomedical image analysis challenges conducted up to now. We demonstrate the importance of challenges and show that the lack of quality control has critical consequences. First, reproducibility and interpretation of the results is often hampered as only a fraction of relevant information is typically provided. Second, the rank of an algorithm is generally not robust to a number of variables such as the test data used for validation, the ranking scheme applied and the observers that make the reference annotations. To overcome these problems, we recommend best practice guidelines and define open research questions to be addressed in the future. Copyright © 2018, The Authors. All rights reserved.

关键词： Quality control

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Healthcare Workers' Perceptions of information in the Electronic Health Record

引用

Proceedings of the Human Factors and Ergonomics Society Annual Meeting 2009年第11期53卷 635 - 639页

作者： Alissa L. Russ Jason J. Saleem Connie F. Justice Heather Hagg Peter A. Woodbridge Bradley N. Doebbeling VA HSR&D Center on Implementing Evidence-Based Practice Roudebush VAMC Indianapolis IN；Indiana University (IU) Center for Health Services & Outcomes Research Regenstrief Institute Indianapolis IN； VA HSR&D Center on Implementing Evidence-Based Practice Roudebush VAMC Indianapolis IN；Indiana University (IU) Center for Health Services & Outcomes Research Regenstrief Institute Indianapolis IN；Department of Computer Information Technology IUPUI Indianapolis IN； VA Nebraska Western Iowa Heath Care System Omaha NE；University of Nebraska Medical Center College of Public Health Omaha NE； VA HSR&D Center on Implementing Evidence-Based Practice Roudebush VAMC Indianapolis IN；Indiana University (IU) Center for Health Services & Outcomes Research Regenstrief Institute Indianapolis IN；Department of Medicine IU School of Medicine Indianapolis IN.

Electronic health record (EHR) systems and health information technology (IT) hold unrealized potential for improving the quality, continuity, and safety of medical care; they can also introduce new gaps in care and present unique challenges for healthcare workers. We conducted 14 key informant, semi-structured interviews at a large Veterans Affairs Medical Center and asked healthcare employees why paper use persists despite a fully implemented EHR. In this investigation, we performed a secondary analysis on interview data to identify characteristics of information technology (IT) that are important to support healthcare workflow. As a result of this study, 17 distinct information characteristics emerged; in this document, we provide detail on five characteristics that were often cited as desirable for workflow but insufficiently supported by health IT: 1) customizable, 2) prioritized, 3) trendable, 4) locatable, and 5) accessible. Results from this study reveal key electronic information characteristics for healthcare workflow and have implications for patient safety and future health IT designs.

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Covert channel mitigation method for secure real-time database using capacity metric

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Tongxin Xuebao/Journal on Communications 2008年第8期29卷 46-56页

作者： Zeng, Hai-Tao Wang, Yong-Ji Ruan, Li Zu, W. Cai, Jia-Yong Lab for Internet Software Technology Institute of Software Chinese Academy of Science Beijing 100190 China Key Laboratory for Computer Science Chinese Academy of Sciences Beijing 100190 China Graduate University Chinese Academy of Sciences Beijing 100049 China National Engineering Research Center for Fundamental Software Institute of Software Chinese Academy of Science Beijing 100190 China Integrate Information System Research Center Institute of Automation Chinese Academy of Science Beijing 100190 China

A capacity using covert channel mitigation method (CUCCMM) was proposed. This method uses capacity as metric for channel danger measure according to trusted computer system evaluation criteria (TCSEC) and multiple probabilities based protocol selection policy (MPBPSP) to guide die application of secure concurrency control protocol. The algorithms of channel's capacity measure and policy's parameter computing are also presented. Experimental results show that CUCCMM implements the restriction criterion on channel's capacity effectively and accurately, and the MPBPSP significantly decreases the influence of restriction operation on real-time performance.

关键词： Concurrency control

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PREFACE

引用

International Journal of Foundations of computer Science 2010年第3期21卷 385-386页

作者： JACIR L. BORDIM AKIHIRO FUJIWARA KOJI NAKANO Department of Computer Science University of Brasilia Asa Norte 70910-900 Brasilia-DF Brazil Department of Computer Science and System Engineering Kyushu Institute of Technology Iizuka Fukuoka 820-8502 Japan Department of Information Engineering Hiroshima University Kagamiyama Higashi-Hiroshima 739-8527 Japan

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PREFACE

引用

International Journal of Foundations of computer Science 2011年第3期22卷 517-518页

作者： JACIR L. BORDIM KOJI NAKANO AKIHIRO FUJIWARA Department of Computer Science University of Brasilia Asa Norte 70910-900 Brasilia-DF Brazil Department of Information Engineering Hiroshima University Kagamiyama Higashi-Hiroshima 739-8527 Japan Department of Computer Science and System Engineering Kyushu Institute of Technology Iizuka Fukuoka 820-8502 Japan

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Application of logistic regression model: Propagation effect on internal soliton

Chung Cheng Ling Hsueh Pao/Journal of Chung Cheng Institute ...

引用

Chung Cheng Ling Hsueh Pao/Journal of Chung Cheng institute of technology 2009年第2期37卷 1-10页

作者： Chen, T.H. Yang, H.C.P. Chen, C.Y. Chen, C.W. Department of Business Administration Shu-Te University Taiwan Department of Risk Management and Insurance National Kaohsiung First University of Science and Technology Taiwan Department of Computer Science National Pingtung University of Education No. 4-18 Ming Shen Rd. Pingtung 90003 Taiwan Department of Management Information System Yung-Ta Institute of Technology and Commerce Taiwan Department of Logistics Management Shu-Te University Taiwan

A laboratory experiment on internal solitary wave propagation over a submarine ridge was performed. Analytical methods, binary and cumulative logistic regression model included, were appropriately employed to analyze amplitude-based transmission rate, defined as ratio of incident wave amplitude and transmission wave amplitude. We concluded that the prediction comprehension by the cumulative logistic regression model was better than the binary logistic regression model. Furthermore, the binary logistics is more stable and suitable to describe the characteristics of samples.

关键词： Wave propagation

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