检索结果-内蒙古大学图书馆

第29届中国数据库学术会议

作者： WANG Guangdong 王广东 WANG Yijie 王意洁 LI Xiaoyong 李小勇 WANG Yuan 王媛 National Key Laboratory for Parallel and Distributed Processing College of Computer Science Nation 国防科技大学计算机学院并行与分布处理国家重点实验室长沙410073

不确定数据流上的Skyline查询技术逐步引起研究者的关注，传统的集中式流处理算法难以满足海量数据的查询需求，并且云计算所提供的海量计算资源和有效的存储管理模式，为研究并行Skyline查询技术提供了充足的条件。基于上述事实，提出... 详细信息

不确定数据流上的Skyline查询技术逐步引起研究者的关注，传统的集中式流处理算法难以满足海量数据的查询需求，并且云计算所提供的海量计算资源和有效的存储管理模式，为研究并行Skyline查询技术提供了充足的条件。基于上述事实，提出了一种不确定数据流上的并行Skyline查询算法(PSUDS)。该算法通过交叉划分滑动窗口的方式，将集中式流查询转化为并行处理，以并行执行的方式来解决集中式算法处理性能不足的问题。大量实验结果表明，该算法具有较好的并行可扩展性。

关键词：不确定数据流云计算并行处理查询算法性能测试

来源：评论

学校读者我要写书评

暂无评论

不确定Skyline查询技术研究

不确定Skyline查询技术研究

引用

第29届中国数据库学术会议

作者： Wang Yijie 王意洁 Li Xiaoyong 李小勇 Yang Yongtao 杨永滔 Qi Yafei 祁亚斐 Wang Guangdong 王广东 National Key Laboratory for Parallel and Distributed Processing College of Computer National Unive 国防科学技术大学计算机学院并行与分布处理国家重点实验室长沙 410073

当前不确定数据广泛存在于诸如传感器网络、RFID网络、基于位置服务、移动对象管理网上购物和市场监控等各种实际应用中。不确定Skyline查询作为不确定数据管理的一个重要方面，由于其在决策制定、市场分析、环境监控和数据挖掘等方面... 详细信息

当前不确定数据广泛存在于诸如传感器网络、RFID网络、基于位置服务、移动对象管理网上购物和市场监控等各种实际应用中。不确定Skyline查询作为不确定数据管理的一个重要方面，由于其在决策制定、市场分析、环境监控和数据挖掘等方面的重要作用，近年来在数据库和网络计算领域受到广泛关注。首先，概述了各种不确定数据类型上的Skyline查询定义，包括离散、连续概率分布模型以及不完全数据上的Skyline查询定义;其次，分析了不确定Skyline查询的特点，并在此基础上综述了现有的各种不确定数据集上的集中式和分布式Skyline查询方法，重点分析了各种算法的原理和优缺点;再次，介绍了不确定数据流上的Skyline查询定义并综述了各种不确定数据流上的Skyline查询方法;最后，基于最新研究动态指出了未来不确定Skyline查询研究的趋势。

关键词：数据查询不确定数据分布式技术

来源：评论

学校读者我要写书评

暂无评论

基于移动云计算的大规模上下文流处理框架研究

基于移动云计算的大规模上下文流处理框架研究

引用

第九届中国通信学会学术年会

作者： XIAO You 肖友 SHI Dian-xi 史殿习 National Key Laboratory for Parallel and Distributed Processing School of Computer ScienceNational 国防科技大学计算机学院并行与分布处理国家重点实验室长沙410073

随着移动云计算的兴起，有关于大规模移动设备上下文信息处理的研究成为了热点。目前比较流行的解决方案是采用基于MapReduce计算模型的Hadoop框架，它虽能解决大规模数据处理的吞吐量问题但是却不能很好的解决数据处理的时效问题。因... 详细信息

随着移动云计算的兴起，有关于大规模移动设备上下文信息处理的研究成为了热点。目前比较流行的解决方案是采用基于MapReduce计算模型的Hadoop框架，它虽能解决大规模数据处理的吞吐量问题但是却不能很好的解决数据处理的时效问题。因此，本文针对存在的问题，提出了移动云计算与流处理技术相结合的解决方案，并构建与实现了一个实时处理大规模上下文的流处理框架。最后通过此框架对本文的研究内容进行了验证，且以一个道路实况监测的实例验证了框架的可行性及有效性。

关键词：移动云计算上下文信息流处理框架可行性分析

来源：评论

学校读者我要写书评

暂无评论

基于物理轨迹数据和社会网络的泛化行程推荐

基于物理轨迹数据和社会网络的泛化行程推荐

引用

第六届中国传感器网络学术会议(CWSN 2012)

作者： MENG Xiang-Xu 孟祥旭 WANG Xiao-Dong 王晓东 ZHOU Xing-Ming 周兴铭 National Key Laboratory of Parallel and Distributed Processing(College of Computer Science National 并行与分布处理国家重点实验室(国防科学技术大学计算机学院) 湖南长沙410073

人类活动行程的制定往往基于宽泛的最初意向，通过综合考虑各种约束条件加以优化而完成。当前，基于位置点名称查找的行程制定方法，不支持用户一次性提交多个具有时序关系的宽泛出行意向，更不能同时为多个地理位置点提供详细的最优驾... 详细信息

人类活动行程的制定往往基于宽泛的最初意向，通过综合考虑各种约束条件加以优化而完成。当前，基于位置点名称查找的行程制定方法，不支持用户一次性提交多个具有时序关系的宽泛出行意向，更不能同时为多个地理位置点提供详细的最优驾车方案。基于位置社交网络信息和车辆历史轨迹数据，探索了支持用户多个模糊意向输入的泛化行程推荐框架，主要工作包括：(1)对泛化的行程推荐问题进行建模;(2)设计并实现了基于分类树的地理位置点(POI)查询策略和算法;(3)提出了基于Voronoi图的GPS轨迹分析模型，并实现了任意两个位置点间最优行驶路径计算方法;(4)联合社会网络和语义交通信息图，基于蚁群算法进行行程的推荐，并实现了原型系统。实验及问卷调查结果表明，推荐结果的用户满意度可达80％。

关键词：行程规划泛化模型优化设计物理轨迹数据社会网络

来源：评论

学校读者我要写书评

暂无评论

NTIRE 2021 multi-modal aerial view object classification challenge

arXiv

引用

arXiv 2021年

作者： Nina, Oliver Liu, Jerrick Menart, Chris Lee, Bob Timofte, Radu Inkawhich, Nathan Duan, Yuru Wei, Wei Zhang, Lei Xu, Songzheng Sun, Yuxuan Tang, Jiaqi Li, Gongzhe Tan, Zhiwen Pan, Lin-Peng Cummings, Sol Yang, Cheng-Yen Hsu, Hung-Min Cai, Jiarui Mei, Jie Yeh, Chia-Ying Hwang, JenqNeng Yifei, Xu Jain, Sahil Geng, Xueli Ma, Mengru Cai, Huanqia Cai, Chengxue Miron, Casian Pasarica, Alexandru Shangguan, Zhongkai Zheng, Zihe Yang, Lehan Xu, Kele Air Force Research Laboratory United States University of Illinois at Urbana-Champaign United States Wright Brothers Institute United States Duke University United States Computer Vision Lab ETH Zürich Switzerland Chang'an Campus Northwestern Polytechnical University Shaanxi Province Xi'an China Beihang University China PASCO Corporation Japan University of Washington United States Xidian University China Dengzhuang South Road Haidian District China Gheorghe Asachi Technical University Romania University of Rochester United States The University of Sydney Key Laboratory for Parallel and Distributed Processing China

In this paper, we introduce the first Challenge on Multi-modal Aerial View Object Classification (MAVOC) in conjunction with the NTIRE 2021 workshop at CVPR. This challenge is composed of two different tracks using EO and SAR imagery. Both EO and SAR sensors possess different advantages and drawbacks. The purpose of this competition is to analyze how to use both sets of sensory information in complementary ways. We discuss the top methods submitted for this competition and evaluate their results on our blind test set. Our challenge results show significant improvement of more than 15% accuracy from our current baselines for each track of the competition. © 2021, CC BY.

关键词： Synthetic aperture radar

来源：评论

学校读者我要写书评

暂无评论

Corrigendum to “A distributed Relation Detection Approach in the Internet of Things”

引用

Mobile Information Systems 2019年第1期2019卷

作者： Weiping Zhu Hongliang Lu Xiaohui Cui Jiannong Cao International School of Software Wuhan University Wuhan *** Science and Technology on Parallel and Distributed Processing Laboratory National University of Defense Technology Changsha *** Department of Computing Hong Kong Polytechnic University Kowloon Hong Kongpolyu.edu.hk

来源：评论

学校读者我要写书评

暂无评论

High-energy-density electron beam from interaction of two successive laser pulses with subcritical-density plasma

引用

Physical Review Accelerators and Beams 2016年第2期19卷 021301-021301页

作者： J. W. Wang W. Yu M. Y. Yu H. Xu J. J. Ju S. X. Luan M. Murakami M. Zepf S. Rykovanov Helmholtz Institute Jena Jena 07743 Germany State Key Laboratory of High Field Laser Physics Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai 201800 China Institute for Fusion Theory and Simulation and the Department of Physics Zhejiang University Hangzhou 310027 China Institute for Theoretical Physics I Ruhr University Bochum D-44780 Germany National Laboratory for Parallel and Distributed Processing School of Computer Science National University of Defense Technology Changsha 410073 China Institute of Laser Engineering Osaka University Osaka 565-0871 Japan Centre for Plasma Physics School of Mathematics and Physics Queen’s University Belfast Belfast BT7 1NN United Kingdom

It is shown by particle-in-cell simulations that a narrow electron beam with high energy and charge density can be generated in a subcritical-density plasma by two consecutive laser pulses. Although the first laser pulse dissipates rapidly, the second pulse can propagate for a long distance in the thin wake channel created by the first pulse and can further accelerate the preaccelerated electrons therein. Given that the second pulse also self-focuses, the resulting electron beam has a narrow waist and high charge and energy densities. Such beams are useful for enhancing the target-back space-charge field in target normal sheath acceleration of ions and bremsstrahlung sources, among others.

关键词： Plasma acceleration & new acceleration techniques

来源：评论

学校读者我要写书评

暂无评论

Quasimonoenergetic Proton Bunch Generation by Dual-Peaked Electrostatic-Field Acceleration in Foils Irradiated by an Intense Linearly Polarized Laser

引用

Physical Review Letters 2010年第6期105卷 065003-065003页

作者： H. B. Zhuo (卓红斌) Z. L. Chen (陈正林) W. Yu (余玮) Z. M. Sheng (盛政明) M. Y. Yu (郁明阳) Z. Jin (金展) R. Kodama (兒玉了祐) Graduate School of Engineering Osaka University 2-1 Yamada-oka Suita Osaka 565-0871 Japan National Laboratory for Parallel and Distributed Processing School of Computer Science National University of Defense Technology Changsha 410073 People’s Republic of China Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai 201800 People’s Republic of China Department of Physics Shanghai Jiao Tong University Shanghai 200240 People’s Republic of China Beijing National Laboratory for Condensed Matter Physics Institute of Physics CAS Beijing 100080 People’s Republic of China Institute for Fusion Theory and Simulation Zhejiang University Hangzhou 310027 People’s Republic of China Institute for Theoretical Physics I Ruhr University Bochum D-44780 Germany Institute of Laser Engineering Osaka University 2-6 Yamada-oka Suita Osaka 565-0871 Japan

It is found that stable proton acceleration from a thin foil irradiated by a linearly polarized ultraintense laser can be realized for appropriate foil thickness and laser intensity. A dual-peaked electrostatic field, originating from the oscillating and nonoscillating components of the laser ponderomotive force, is formed around the foil surfaces. This field combines radiation-pressure acceleration and target normal sheath acceleration to produce a single quasimonoenergetic ion bunch. A criterion for this mechanism to be operative is obtained and verified by two-dimensional particle-in-cell simulation. At a laser intensity of ∼5.5×1022 W/cm2, quasimonoenergetic GeV proton bunches are obtained with ∼100 MeV energy spread, less than 4° spatial divergence, and ∼50% energy conversion efficiency from the laser.

关键词： Germanium compounds

来源：评论

学校读者我要写书评

暂无评论

NTIRE 2024 Challenge on Short-form UGC Video Quality Assessment: Methods and Results

arXiv

引用

arXiv 2024年

作者： Li, Xin Yuan, Kun Pei, Yajing Lu, Yiting Sun, Ming Zhou, Chao Chen, Zhibo Timofte, Radu Sun, Wei Wu, Haoning Zhang, Zicheng Jia, Jun Zhang, Zhichao Cao, Linhan Chen, Qiubo Min, Xiongkuo Lin, Weisi Zhai, Guangtao Sun, JianHui Wang, Tianyi Li, Lei Kong, Han Wang, Wenxuan Li, Bing Luo, Cheng Wang, Haiqiang Chen, Xiangguang Meng, Wenhui Pan, Xiang Shi, Huiying Zhu, Han Xu, Xiaozhong Sun, Lei Chen, Zhenzhong Liu, Shan Kong, Fangyuan Fan, Haotian Xu, Yifang Xu, Haoran Yang, Mengduo Zhou, Jie Li, Jiaze Wen, Shijie Xu, Mai Li, Da Yao, Shunyu Du, Jiazhi Zuo, Wangmeng Li, Zhibo He, Shuai Ming, Anlong Fu, Huiyuan Ma, Huadong Wu, Yong Xue, Fie Zhao, Guozhi Du, Lina Guo, Jie Zhang, Yu Zheng, Huimin Chen, Junhao Liu, Yue Zhou, Dulan Xu, Kele Xu, Qisheng Sun, Tao Ding, Zhixiang Hu, Yuhang University of Science and Technology of China China Kuaishou Technology China University of Würzburg Germany Shanghai Jiao Tong University China Nanyang Technological University Singapore Xiaohongshu China WeChat China Tencent China Wuhan University China ByteDance Shenzhen China Zhejiang University China Department of Electronic and Information Engineering Beihang University Beijing China Southern University of Science and Technology China Harbin Institute of Technology China Beijing University of Posts and Telecommunications China China Merchants Bank China Shandong Jianzhu University China Key Laboratory for Parallel and Distributed Processing Changsha China Institute of Automation CAS China University of Chinese Academy of Sciences China

This paper reviews the NTIRE 2024 Challenge on Short-form UGC Video Quality Assessment (S-UGC VQA), where various excellent solutions are submitted and evaluated on the collected dataset KVQ from popular short-form video platform, i.e., Kuaishou/Kwai Platform. The KVQ database is divided into three parts, including 2926 videos for training, 420 videos for validation, and 854 videos for testing. The purpose is to build new benchmarks and advance the development of S-UGC VQA. The competition had 200 participants and 13 teams submitted valid solutions for the final testing phase. The proposed solutions achieved state-of-the-art performances for S-UGC VQA. The project can be found at https://***/lixinustc/KVQ-Challenge-CVPR-NTIRE2024. Copyright © 2024, The Authors. All rights reserved.

关键词：

来源：评论

学校读者我要写书评

暂无评论

A standard cell global routing algorithm with net selection for over-the-cell routing

引用

ELECTRONICS AND COMMUNICATIONS IN JAPAN PART III-FUNDAMENTAL ELECTRONIC SCIENCE 1995年第12期78卷 102-115页

作者： Koide, T Suzuki, T Wakabayashi, S Yoshida, N Member Faculty of Engineering Hiroshima University Higashi-Hiroshima Japan 724 Associate Member Shin'ichi:Wakabayashi received his B.E. degree in Electrical Engineering and his M.E. and Ph.D. degrees in Systems Engineering from Hiroshima University in 1979 1981 and 1984 respectively. He was a Researcher at Tokyo Research Laboratory IBM Japan Ltd. in 1984-1988. Since 1988 he has been an Associate Professor on the Faculty of Engineering Hiroshima University. His research interests include VLSI CAD combinatorial optimization parallel and distributed algorithms and theory of computing. Dr. Wakabayashi is a member of the Institute of Electrical and Electronics Engineers the Association for Computing Machinery the Institute of Electronics Information and Communication Engineers and the Information Processing Society of Japan. Members

In the detailed routing for VLSI standard cell layout design, the over-the-cell channel routing, which utilizes the over-the-cell legion as the routing region, has been proposed. In this design method, after determining the net assignment to each channel in the global routing step, the track assignment both in channel and on over-the-cell regions is performed by an over-the-cell channel router. However, conventional global routing algorithms do not assume over-the-cell channel routing but conventional channel routing, Therefore, the minimization of channel density does not always successfully lead to the minimization of the final channel height. This paper presents a new global Touting method for standard cell layouts to determine global routes for each net in both channel and over-the-cell regions simultaneously. The standard cell layout design system GLORIA based on the proposed algorithm is developed, and the experimental results compared with the conventional global routing method that performs the over-the-cell channel routing after global-routing with TimberWolf-SC4.2c are reported. Experimental results showed that the proposed routing algorithm can route about 18.4 percent fewer number of tracks than the conventional routing method, and the effectiveness of the proposed method is shown. The experimental results of applying the proposed method to the three-layer routing layout model also are presented.

关键词： standard cell layout design CAD global routing over-the-cell routing

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：