检索结果-内蒙古大学图书馆

2019 International Conference on Security, Pattern Analysis, and Cybernetics, SPAC 2019

作者： Miao, Nan Zhao, Shengjie Shi, Qingjiang Zhang, Rongqing Tongji University Key Laboratory of Embedded System and Service Computing of Ministry of Education Shanghai China Tongji University Sch. of Software Eng. the Key Lab. of Embedded System and Service Computing of Ministry of Education Shanghai China Tongji University School of Software Engineering Shanghai China

ISBN: (纸本)9781728159287

With the emerging of smart metering around the world, there is a growing demand to analyse the residential energy usage. In this paper, we propose a Deep Neural Network (DNN)-based approach for non-intrusive load monitoring (NILM), which can achieve effective and efficient estimation of individual appliance usage according to a single main meter reading in a non-intrusive manner. Considering practical situations, two training methods are provided. The first training approach is fully supervised learning, which requires a ground truth of label, indicating the state of the appliance (ON/OFF), to build a prediction model. The second training approach is semi-supervised learning, leading to better performance by F-Measure metric while only requiring some more unlabelled training data. Experimental results on the low-sample rate REDD dataset demonstrate the superior performance of our proposed DNN-based method compared with Hidden Markov Model (HMM)based and Graph Signal Processing (GSP)-based approaches. © 2019 IEEE.

关键词： Deep neural networks

来源：评论

学校读者我要写书评

暂无评论

Object recognition using a Bayesian network imitating human neocortex

Object recognition using a Bayesian network imitating human ...

引用

2009 2nd International Congress on Image and Signal Processing, CISP'09

作者： Lei, Wang Xianbin, Wen Xu, Jiao Jianguang, Zhang Key Laboratory of Computer Vision and System Ministry of Education Tianjin University of Technology Tianjin 300191 China Tianjin Key Laboratory of Intelligence Computing and Novel Software Technology Tianjin 300191 China

ISBN: (纸本)9781424441310

After Mountcastle proposed the theory that all parts of mammalian neocortex are uniform [1], more and more evidences were found to prove that no matter what function the field of neocortex provide, the organizing of cortex cells are same and have an hierarchical structure. It can be inferred every unit of neocortex process information using an identical algorithm. This means if people can find and imitate this algorithm, all intelligence work will be resolved in one way, the only difference is using different sensors. Base on this, Hawkins proposed a top-down model of neocortical operation [2], in which model, both continuous time and prediction play important roles in human's invariant recognition. Then George and Hawkins developed an inspired framework named "Hierarchical Temporal Memory" [3], using a hierarchical Bayesian network to perform prediction and temporal sequence in training the network, which partially implements Hawkins' model, and can provide a rather good performance in invariant recognition. We current study is extending their work by implementing the framework in visual category recognition field. ©2009 IEEE.

关键词： Bayesian networks

来源：评论

学校读者我要写书评

暂无评论

Low-rate non-intrusive appliance load monitoring based on graph signal processing

Low-rate non-intrusive appliance load monitoring based on gr...

引用

2019 International Conference on Security, Pattern Analysis, and Cybernetics, SPAC 2019

作者： Zhang, Bing Zhao, Shengjie Shi, Qingjiang Zhang, Rongqing Tongji University Key Laboratory of Embedded System and Service Computing of Ministry of Education Shanghai China Tongji University Sch. of Software Eng. the Key Lab. of Embedded System and Service Computing of Ministry of Education Shanghai China Tongji University School of Software Engineering Shanghai China

ISBN: (纸本)9781728159287

Thanks to the large-scale smart meters deployments around the world, non-intrusive appliance load monitoring (NILM) is receiving popularity. It aims to disaggregate the total electricity load of a home into individual appliances without resorting to any specific appliance power monitors. NILM is worthy of broad attention owing to its facilitation in energy savings. This paper regards NILM as a classification task and proposes a two-step method based on graph signal processing (GSP). In the first step, a smoothest solution is obtained by minimizing the regularization term. In the second step, gradient projection method, which uses the obtained minimizer as a start point, is adopted to optimize the while objective function, where NILM is regarded as a constrained nonlinear programming problem. The experiment results based on the open-access data set REDD clearly demonstrate that the proposed GSP-based method achieves improved performance compared with other state-of-the-art low-rate NILM approaches. © 2019 IEEE.

关键词： Signal processing

来源：评论

学校读者我要写书评

暂无评论

Software and hardware co-designed multi-level TLBs for chip multiprocessors

Software and hardware co-designed multi-level TLBs for chip ...

引用

11th IEEE International Conference on Computer and Information technology, CIT 2011 and 11th IEEE International Conference on Scalable computing and Communications, SCALCOM 2011

作者： Zhang, Xiaohui Cong, Ming Chen, Guangqiang Key Laboratory of Computer System and Architecture Institute of Computing Technology Graduate University Beijing China National University of Defense Technology Changsha China

ISBN: (纸本)9780769543888

Translation Lookaside Buffers ( TLBs ) have a significant impact on system performance. Numerous prior studies focus on TLBs design for uniprocessors. With the advent of chip multiprocessors (CMPs), we need a shift to TLBs for chip multiprocessors. This paper presents a software-implemented level-two TLB-SL2-TLB which is a shared level-two TLB for multiprocessors. It not only reduces the cost of TLB refill handler for every processor core, but also reduces the redundant TLB misses' cost for CMPs effectively. Today, CMPs typically employ private per-core TLBs. SL2-TLB together with the hardware TLBs make up a software-hardware co-designed multilevel TLB system which brings great benefit to system performance while avoiding changing the hardware TLB. So it is a convenient and efficient method for CMPs' TLB performance improvement. The benefit brought by SL2-TLB to SPECCPU2000 is less than that to SPECCPU2006, about 5% and 7% separately. Thereinto, the average performance improvement of SPECint 2006 reaches about 12.7%. That is because the overhead for TLB refill is small when the cache is large enough to avoid a miss as walking the page table of applications with small memory footprints. The further optimization for SL2-TLB is kept the SL2-TLB table stay in L2 cache forever by the cache locking scheme. SL2-TLB together with cache locking scheme improves the performances by over 13% for SPECint 2006. And an average performance improvement of over 7% is brought to the new emerging parallel benchmark suite- Princeton Application Repository for Shared-Memory Computers (PARSEC). And all the above evaluations are done on Godson-3 processors which is the latest generation of China's most powerful microprocessor family. © 2011 IEEE.

关键词： Benchmarking

来源：评论

学校读者我要写书评

暂无评论

Flex memory: Exploiting and managing abundant off-chip optical bandwidth

Flex memory: Exploiting and managing abundant off-chip optic...

引用

作者： Wang, Ying Zhang, Lei Han, Yinhe Li, Huawei Li, Xiaowei Key Laboratory of Computer System and Architecture Institute of Computing Technology Chinese Academy of Sciences Beijing China

ISBN: (纸本)9783981080179

The emerging nanophotonic technology can avoid the limitation of I/O pin count, and provide abundant memory bandwidth. However, current DRAM organization has mainly been optimized for a higher storage capacity and package pin utilization. The resulted data fetching mechanism is quite inefficient in performance and energy saving, and cannot effectively utilize the abundant optical bandwidth in off-chip communication. This paper inspects the opportunity brought by optical communication, and revisits the DRAM memory architecture considering the technology trend towards multiprocessors. In our FlexMemory design, super-line prefetching is proposed to boost system performance and promote energy efficiency, which leverages the abundant photonic bandwidth to enlarge the effective data fetch size per memory cycle. To further preserve locality and maintain service parallelism for different workloads, page folding technique is employed to achieve adaptive data mapping in photonics-connected DRAM chips via optical wavelengths allocation. By combining both techniques, surplus off-chip bandwidth can be utilized and effectively managed adapting to the workloads intensity. Experimental results show that our FlexMemory achieves considerable improvements in performance and energy efficiency. © 2011 EDAA.

关键词： Dynamic random access storage

来源：评论

学校读者我要写书评

暂无评论

An efficient confidentiality protection solution for pub/sub system

引用

Cybersecurity 2023年第4期6卷 14-25页

作者： Jinglei Pei Yuyang Shi Qingling Feng Ruisheng Shi Lina Lan Shui Yu Jinqiao Shi Zhaofeng Ma Beijing University of Posts and Telecommunications Beijing100876China Key Laboratory of Trustworthy Distributed Computing and Service(BUPT) Ministry of EducationBeijingChina School of Computer Science University of Technology SydneySydneyNSWAustralia

Publish/subscribe(pub/sub)systems are widely used in large-scale messaging systems due to their asynchronous and decoupled *** the population of pub/sub cloud services,the privacy protection problem of pub/sub systems has started to emerge,and events and subscriptions are exposed when executing event matching on untrustworthy cloud ***,as the number of subscriptions increases,the effectiveness of the previous confidentiality protection approaches declines *** this paper,we propose SBM(scalable blind matching),an effective confidentiality protection scheme for pub/sub *** the best of our knowledge,SBM is the first scheme that applies order-preserving encryption algorithm to protect the system’s confidentiality and ensure its *** this scheme,SBM-I is highly effective in subscription matching but is unable to achieve ideal security IND-OCPA,whereas SBM-II is suggested to ensure system security and SGX is used to reduce interaction and boost ciphertext matching *** experiment demonstrates that this method has better matching performance compared to others:the average matching time of SBM-I is 3–4 orders of magnitude faster than the matching algorithm MP and SGX-based algorithm SCBR when the number of subscriptions is 500,000,and the average matching time of SBM-II is 40 times faster than MP and 24 times than SCBR.

关键词： Pub/sub Confidentiality Privacy protection SGX Scalability

来源：评论

学校读者我要写书评

暂无评论

Locality and parallelism optimization for dynamic programming algorithm in bioinformatics

Locality and parallelism optimization for dynamic programmin...

引用

2006 ACM/IEEE Conference on Supercomputing, SC'06

作者： Tan, Guangming Feng, Shengzhong Sun, Ninghui Key Laboratory of Computer System and Architecture Institute of Computing Technology Chinese Academy of Sciences Graduate School Chinese Academy of Sciences

ISBN: (纸本)0769527000

Dynamic programming has been one of the most efficient approaches to sequence analysis and structure prediction in biology. However, their performance is limited due to the drastic increase in both the number of biological data and variety of the computer architectures. With regard to such predicament, this paper creates excellent algorithms aimed at addressing the challenges of improving memory efficiency and network latency tolerance for nonserial polyadic dynamic programming where the dependences are nonuniform. By relaxing the nonuniform dependences, we proposed a new cache oblivious scheme to enhance its performance on memory hierarchy architectures. Moreover we develop and extend a tiling technique to parallelize this nonserial polyadic dynamic programming using an alternate block-cyclic mapping strategy for balancing the computational and memory load, where an analytical parameterized model is formulated to determine the tile volume size that minimizes the total execution time and an algorithmic transformation is used to schedule the tile to overlap communication with computation to further minimize communication overhead on parallel architectures. The numerical experiments were carried out on several high performance computer systems. The new cache-oblivious dynamic programming algorithm achieve 2-10 speedup and the parallel tiling algorithm with communication-computation overlapping shows a desired potential for fine-grained parallel computing on massively parallel computer systems. © 2006 IEEE.

关键词： Dynamic programming

来源：评论

学校读者我要写书评

暂无评论

Cooperative differential games guidance laws for multiple attackers against an active defense target

引用

Chinese Journal of Aeronautics 2022年第5期35卷 374-389页

作者： Fei LIU Xiwang DONG Qingdong LI Zhang REN School of Automation Science and Electrical Engineering Science and Technology on Aircraft Control LaboratoryBeihang UniversityBeijing 100083China Beijing Advanced Innovation Center for Big Data and Brain Computing Beihang UniversityBeijing 100083China Key Laboratory of Dependable Service Computing in Cyber Physical Society Ministry of Education of ChinaChongqing UniversityChongqing 400044China

This paper is concerned with a scenario of multiple attackers trying to intercept a target with active *** types of agents are considered in the guidance:The multiple attackers,the target and the defender,where the attackers aim to pursuit the target from different directions and evade from the defender *** guidance engagement is formulated in the framework of a zero-sum two-person differential game between the two opposing teams,such that the measurements on the maneuver of the target or estimations on the defending strategy of the defender can be *** of the attackers resides in two aspects:redundant interception under the threat of the defender and the relative intercept geometry with the *** miss distances,the relative intercept angle errors and the costs of the agents are combined into a single performance index of the *** formulation enables a unitary approach to the design of guidance laws for the *** minimize the control efforts and miss distances for the attackers,an optimization method is proposed to find the best anticipated miss distances to the defender under the constraint that the defender is endowed with a capture *** simulations with two cases are conducted to illustrate the effectiveness of the proposed cooperative guidance law.

关键词： Active defense Cooperative guidance Differential games Minimum effort optimization Relative intercept angle

来源：评论

学校读者我要写书评

暂无评论

High-efficient architecture of Godson-T many-core processor 23

High-efficient architecture of Godson-T many-core processor

引用

23rd IEEE Hot Chips Symposium, HCS 2011

作者： Fan, Dongrui Zhang, Hao Wang, Da Ye, Xiaochun Song, Fenglong Zhang, Junchao Fan, Lingjun Advanced Micro-System Group National Key Laboratory of Computer Architecture Institute of Computing Technology Chinese Academy of Sciences China

This article consists of a collection of slides from the author's conference presentation on the special features, system design, processing capabilities, and targeted markets for AMS's Godson-T microprocessor...

ISBN: (纸本)9781467388771

关键词：

来源：评论

学校读者我要写书评

暂无评论

Protein structure prediction based on a domain clustering database

Protein structure prediction based on a domain clustering da...

引用

2007 1st International Conference on Bioinformatics and Biomedical Engineering, ICBBE

作者： Ma, Zhaoyun Zhang, Fa Xu, Lin Feng, Shengzhong Liu, Zhiyong Key Laboratory of Computer System and Architecture Chinese Academy of Sciences Institute of Computing Technology Graduate School Chinese Academy of Sciences

ISBN: (纸本)1424411203

Homology modeling, as a successful protein structure prediction method, has two major deficiencies, i.e., the lack of the templates (known structures), and the accuracy of alignment between the query (unknown structure) and its templates. To solve these problems, we have constructed a conservative domain clustering template database, and proposed a profile-based alignment algorithm based on the profile extracted from each domain clustering in the database. The extracted profile can well represent the information of the sequence and structure as well. Compared with other alignment methods, such as T-coffee and Smith-Water man, our results show that with this method it's possible to obtain a higher hit rate for template searching and a more accurate and reliable query-template alignment. Therefore, the quality of protein structure prediction can be improved. © 2007 Crown Copyright.

关键词： Proteins

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：