检索结果-内蒙古大学图书馆

19th International Conference on Information Processing in Medical Imaging, IPMI 2005

作者： Zhang, Jun Kang, Ning Rose, Stephen E. Laboratory for High Performance Scientific Computing and Computer Simulation Department of Computer Science University of Kentucky Lexington KY 40506-0046 United States Centre for Magnetic Resonance University of Queensland Brisbane QLD 4072 Australia

We present a new technique for noninvasively tracing brain white matter fiber tracts using diffusion tensor magnetic resonance imaging (DT-MRI). This technique is based on performing diffusion simulations over a series of overlapping three dimensional diffusion kernels that cover only a small portion of the human brain volume and are geometrically centered upon selected starting voxels where a seed is placed. Synthetic and real DT-MRI data are employed to demonstrate the tracking scheme. It is shown that the synthetic tracts can be accurately replicated, while several major white matter fiber pathways in the human brain can be reproduced noninvasively as well. The primary advantages of the algorithm lie in the handling of fiber branching and crossing and its seamless adaptation to the platform established by new imaging techniques, such as high angular, q-space, or generalized diffusion tensor imaging. © Springer-Verlag Berlin Heidelberg 2005.

关键词： Brain

来源：评论

学校读者我要写书评

暂无评论

Hierarchical multi-level fault simulation of large systems

引用

Journal of Electronic Testing 1990年第2期1卷 139-149页

作者： Saab, Daniel G. Mueller-Thuns, Robert B. Blaauw, David Rahmeh, Joseph T. Abraham, Jacob A. Center for Reliable and High Performance Computing Coordinated Science Laboratory University of Illinois at Urbana-Champaign Urbana 61801 IL United States Computer Engineering Research Center University of Texas at Austin Austin 78712 TX United States

This article discusses an approach for hierarchical multilevel fault simulation for large systems described at the transistor, gate, and higher levels. The approach reduces the memory requirement of the simulation drastically, thus allowing the simulation of circuits that are too large to simulate at one flat level on typical engineering workstations. This is achieved by exploiting the regularity and modularity found in a hierarchical circuit description that contains many repeated substructures. The hierarchical setup also allows flexible multilevel simulation: behavioral models can replace subcircuits at any level of the hierarchy for accelerated simulation. The simulation algorithms are at the switch level so that general MOS digital designs with bidirectional signal flow can be handled, and both stuck-at and transistor faults are treated accurately. The approach has been implemented in the hierarchical logic and fault simulation system, CHAMP, that runs under UNIX on SUN-3 and SUN-4 workstations. It has been used successfully for simulating and fault grading a large commercial microprocessor. © 1990 Kluwer Academic Publishers.

关键词： fault simulation multilevel simulation testing VLSI design

来源：评论

学校读者我要写书评

暂无评论

A multithreaded message-passing system for high performance distributed computing applications

A multithreaded message-passing system for high performance ...

引用

International Conference on Distributed computing Systems

作者： S.-Y. Park J. Lee S. Hariri High Performance Distributed Computing (HPDC) Laboratory Department of Electrical Engineering and Computer Science High Performance Distributed Computing HPDC Laboratory Syracuse University Syracuse NY USA

NYNET (ATM wide area network testbed in New York state) Communication System (NCS) is a multithreaded message passing system developed at Syracase University that provides high performance and flexible communication services over asynchronous transfer mode (ATM) based high performance distributed computing (HPDC) environments. NCS capitalizes on thread based programming model to overlap computations and communications, and develop a dynamic message passing environment with separate data and control paths. This leads to a flexible and adaptive message passing environment that can support multiple flow control, error control, and multicasting algorithms. We provide an overview of the NCS architecture and present how NCS point to point communication services are implemented. We also analyze the overhead incurred by using multithreading and compare the performance of NCS point to point communication primitives with those of other message passing systems such as p4, PVM, and MPI. Benchmarking results indicate that NCS shows comparable performance to other systems for small message sizes but outperforms other systems for large message sizes.

关键词： Message passing Asynchronous transfer mode Dynamic programming Communication system control Wide area networks System testing Distributed computing Yarn Computational modeling Programmable control

来源：评论

学校读者我要写书评

暂无评论

A K-Nearest Centroid Neighbor with atention Classifier 5

A K-Nearest Centroid Neighbor with atention Classifier

引用

5th International Conference on computer science and Artificial Intelligence, CSAI 2021

作者： Huang, Rui Ma, Ying Wang, Tian Li, GuoQi Yan, Ming Department of Computer and Information Engineering Xiamen University of Technology China Institute of High Performance Computing Agency for Science Technology and Research Singapore Singapore School of Information Science and Engineering Hunan First Normal University China Department of Precision Instrument Center for Brain Inspired Computing Research

ISBN: (纸本)9781450384155

Among classic algorithms of data mining, the K-nearest neighbor based methods are simple and effective pattern classification algorithms. However, most KNN-based methods do not fully take into account the impact of different training sample points on classification, lead to inaccurate classification. To address this issue, we propose a scheme named Attention-based local mean K-Nearest Centroid Neighbor Classifier (ALMKNCN), combining nearest centroid neighbor with attention mechanism, the influence of each training sample on the query sample is fully considered. Given the query pattern, we first calculate the local centroid mean vector for each class, and then use the idea of attention mechanism to calculate the weight of pseudo-distance between each class and test sample. Finally, based on attention coefficient, the distances between the query sample and local mean vectors are weighted to determine the class of the query sample. Extensive experiments on UCI and KEEL data sets are carried out by comparing ALMKNCN to the state-of-art KNN-based methods. The experimental results demonstrate that the proposed ALMKNCN outperforms the related competitive KNN-based methods with more effectiveness. © 2021 ACM.

关键词： Data mining

来源：评论

学校读者我要写书评

暂无评论

Automatic facet extraction based on multidimensional semantic index

Automatic facet extraction based on multidimensional semanti...

引用

2012 8th International Conference on Semantics, Knowledge and Grids, SKG 2012

作者： Wei, Xiao Luo, Xiangfeng Li, Qing School of Computing Engineering and Science High Performance Computing Center Shanghai University Shanghai 200072 China School of Computer Science and Information Engineering Shanghai Institute of Technology Shanghai 200235 China City University of Hong Kong Department of Computer Science City University of Hong Kong Hong Kong Hong Kong

ISBN: (纸本)9780769547947

Faceted search on web pages needs exact facets. However, it is difficult to extract facets exactly from web pages because the web pages are unstructured and lack of facet information. Therefore, facet extraction is a key to faceted search. This paper proposed a method of extracting facets automatically from unstructured web pages to improve the faceted search on web. The Multidimensional Semantic Index (MDSI) of web pages is constructed by mining all kinds of semantic relations among the words from web pages, which creates a semantic-rich index for web pages. In MDSI, the differently dimensional semantic indexes are bridged by mining the semantic mapping between them. Based on the MDSI of web pages, the facets are extracted by analyzing semantic mapping relations in MDSI. To validate the effect of the proposed method, two datasets are constructed and the experimental results show that the proposed method is feasible and comparatively precise. © 2012 IEEE.

关键词： Extraction

来源：评论

学校读者我要写书评

暂无评论

Eliminate self-interference misses of cache through modifying data layout of arrays

Eliminate self-interference misses of cache through modifyin...

引用

International Conference on high performance computing in the Asia-Pacific Region

作者： Xinda Lu Jie Chen High Performance Computing Laboratory Department of Computer Science and Engineering Shanghai Jiaotong University Shanghai China

ISBN: (纸本)0769505892

Loop tiling is an effective way to improve the cache hit ratio. However, while eliminating self-interference misses, tiling may produce small tiling factors for the cases of some arrays. In order to obtain stable and proper tiling factors, a new method that automatically generates tiling factors is proposed in this paper. These tiling factors are independent of arrays and can completely eliminate self-interference misses and can also significantly reduce cross-interference misses.

关键词： Interference elimination Space technology high performance computing Laboratories computer science Data engineering Automatic testing computer languages Operating systems

来源：评论

学校读者我要写书评

暂无评论

A parallel loop self-scheduling on grid computing environments

A parallel loop self-scheduling on grid computing environmen...

引用

International Symposium on Parallel Architectures, Algorithms and Networks (ISPAN)

作者： Kuan-Wei Cheng Chao-Tung Yang Chuan-Lin Lai Shun-Chyi Chang High-Performance Computing Laboratory Department of Computer Science and Information Engineering Tunghai University Taichung Taiwan

ISBN: (纸本)0769521355

Internet computing and grid technologies promise to change the way we tackle complex problems. They will enable large-scale aggregation and sharing of computational, data and other resources across institutional boundaries. And harnessing these new technologies effectively will transform scientific disciplines ranging from high-energy physics to the life sciences. In this paper, a grid computing environment is proposed and constructed on multiple PC clusters by using Globus Toolkit (GT) and SUN Grid Engine (SGE). The experimental results are also conducted by using the matrix multiplication to demonstrate the performance. On the other hand, the approaches to deal with scheduling and load balancing on multiple heterogeneous PC clusters computer system are not mature. Self-scheduling schemes which are suitable for parallel loops with independent iterations on heterogeneous cluster computer system have been designed in the past. However, these schemes, such as FSS, GSS and TSS, can not achieve load balancing in extremely heterogeneous environment. We propose a heuristic approach based upon a two-phase scheme to solve parallel regular loop scheduling problem on an extremely heterogeneous grid computing environment.

关键词： Grid computing Processor scheduling Load management Internet Large-scale systems Physics Sun Search engines Concurrent computing Frequency selective surfaces

来源：评论

学校读者我要写书评

暂无评论

Implementation of Monitoring and Information Service Using Ganglia and NWS for Grid Resource Brokers

Implementation of Monitoring and Information Service Using G...

引用

IEEE Asia-Pacific Conference on Services computing (APSCC)

作者： Chao-Tung Yang Tsui-Ting Chen Sung-Yi Chen High-Performance Computing Laboratory Department of Computer Science and Information Engineering Tunghai University Taichung Taiwan

Grid computing is increasingly used by organizations to achieve high performance computing and heterogeneous resources sharing. These grids may span several domain administrations via Internet. As a result of this, it may be difficult to monitor, control and manage those machines and resources. This paper aims at providing a multi-platform grid monitoring service which can monitor resources such as CPU speed and utilization, memory usage, disk usage, and network bandwidth in a real-time manner. Monitoring data is extracted form Ganglia and NWS tools then stored and transmitted in XML form and then used for displaying. All the information is displayed using real-time graphs.

关键词： Grid computing high performance computing Bandwidth Data mining computerized monitoring Condition monitoring Resource management XML Weather forecasting Chaos

来源：评论

学校读者我要写书评

暂无评论

A dynamic file replication strategy in data grids

A dynamic file replication strategy in data grids

引用

IEEE Region 10 International Conference TENCON

作者： Chao-Tung Yang Chun-Pin Fu Chien-Jung Huang High-Performance Computing Laboratory Department of Computer Science and Information Engineering Tunghai University Taichung Taiwan

As large amount of data that is produced by scientific experiments and simulations, data grid is a very important and useful technique to solve these kinds of problems in this region. Data replication is one technique that many researchers discuss in past years in data grid. It can create many copies of file and stored in the appropriate location to shorten the time of getting the file. In this paper, we propose a dynamical maintenance service of replication to maintain the data in grid environment. Replicas will be adjusted to the appropriate location for using. The BHR algorithm is a strategy to maintain replica dynamically. We point out a scenario that the BHR algorithm will cause a mistake when it operates. That mistake will limit the speed of transferring file. We propose the Dynamic Maintenance Service is aimed at overcoming the mistake proposed. The contributions of this paper are that the data grid environment will be more efficiency by using DMS algorithm. And the experimental results show that the DMS algorithm is more efficient than other replication strategies.

关键词： Bandwidth Delay Grid computing Computational modeling Distributed computing Resource management computer networks high performance computing Chaos Laboratories

来源：评论

学校读者我要写书评

暂无评论

Construct a grid computing environment for bioinformatics

Construct a grid computing environment for bioinformatics

引用

International Symposium on Parallel Architectures, Algorithms and Networks (ISPAN)

作者： Yu-Lun Kuo Chao-Tung Yang Chuan-Lin Lai Tsai-Ming Tseng High-Performance Computing Laboratory Department of Computer Science and Information Engineering Tunghai University Taichung Taiwan

ISBN: (纸本)0769521355

Internet computing and grid technologies promise to change the way we tackle complex problems. They will enable large-scale aggregation and sharing of computational, data and other resources across institutional boundaries. And harnessing these new technologies effectively will transform scientific disciplines ranging from high-energy physics to the life sciences. The computational analysis of biological sequences is a kind of computation driven science. Cause the biology data growing quickly and these databases are heterogeneous. We can use the grid system sharing and integrating the heterogeneous biology database. As we know, bioinformatics tools can speed up analysis the large-scale sequence data, especially about sequence alignment. The FASTA is a tool for aligning multiple protein or nucleotide sequences. FASTA which we used is a distributed and parallel version. The software uses a message-passing library called MPl (Message Passing Interface) and runs on distributed workstation clusters as well as on traditional parallel computers. A grid computing environment is proposed and constructed on multiple Linux PC clusters by using Globus Toolkit (GT) and SUN Grid Engine (SGE). The experimental results and performances of the bioinformatics tool using on grid system are also presented in this paper.

关键词： Grid computing Bioinformatics Sequences Biology computing Large-scale systems Databases Internet Physics Proteins Software libraries

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：