检索结果-内蒙古大学图书馆

46th Annual Southeast Regional Conference on XX, ACM-SE 46

作者： Lee, Eun-Joc Laboratory for High Performance Scientific Computing and Computer Simulation Department of Computer Science University of Kentucky United States

ISBN: (纸本)9781605581057

A two-phase preconditioning strategy based on a factored sparse approximate inverse is proposed for solving sparse indefinite matrices. In each phase, the strategy first makes the original matrix diagonally dominant to enhance the stability by a shifting method, and constructs an inverse approximation of the shifted matrix by utilizing a factored sparse approximate inverse preconditioner. The two inverse approximation matrices produced from each phase are then combined to be used as a preconditioner. Experimental results show that the presented strategy improves the accuracy and the stability of the preconditioner on solving indefinite sparse matrices. Furthermore, the strategy ensures that convergence rate of the preconditioned iterations of the two-phase preconditioning strategy is much better than that of the standard sparse approximate inverse ones for solving indefinite matrices. Copyright 2008 ACM.

关键词： Matrix algebra

来源：评论

学校读者我要写书评

暂无评论

TRANSPORT-EQUATION APPROACH FOR HETEROJUNCTION BIPOLAR-TRANSISTORS

引用

IEEE TRANSACTIONS ON ELECTRON DEVICES 1990年第3期37卷 519-529页

作者： TOMIZAWA, K PAVLIDIS, D Center of High-frequency Microelectronics Solid-State Electronic Laboratory Department of Electrical Engineering and Computer Science University of Michigan Ann Arbor MI USA Center of High Frequency Microelectronics Solid State Electronic Laboratory Department of Electrical Engineering and Computer Science University of Michigan Ann Arbor MI USA

Transport equations for particle, momentum, and energy densities in two conduction bands are applied to a self-consistent numerical simulation of heterojunction bipolar transistors. Simple formulas for the relaxation frequencies, by which the variation of the conduction band energy and doping concentration in a heterojunction device are easily taken into account, are proposed. The electron transport in the AlGaAs/GaAs heterojunction bipolar transistor with two different collector structures is analyzed and discussed.< >

关键词： Equations Heterojunction bipolar transistors Frequency Electrons Laboratories Bipolar transistors Doping Gallium arsenide Transient analysis Monte Carlo methods

来源：评论

学校读者我要写书评

暂无评论

Snapshot boosting: a fast ensemble framework for deep neural networks

引用

science China(Information sciences) 2020年第1期63卷 77-88页

作者： Wentao ZHANG Jiawei JIANG Yingxia SHAO Bin CUI Center for Data Science Peking University National Engineering Laboratory for Big Data Analysis and Applications Department of Computer Science Beijing Key Lab of Intelligent Telecommunications Software and Multimedia School of Computer ScienceBeijing University of Posts and Telecommunications Key Lab of High Confidence Software Technologies Department of Computer SciencePeking University

Boosting has been proven to be effective in improving the generalization of machine learning models in many fields. It is capable of getting high-diversity base learners and getting an accurate ensemble model by combining a sufficient number of weak learners. However, it is rarely used in deep learning due to the high training budget of the neural network. Another method named snapshot ensemble can significantly reduce the training budget, but it is hard to balance the tradeoff between training costs and diversity. Inspired by the ideas of snapshot ensemble and boosting, we propose a method named snapshot boosting. A series of operations are performed to get many base models with high diversity and accuracy, such as the use of the validation set, the boosting-based training framework, and the effective ensemble strategy. Last, we evaluate our method on the computer vision(CV) and the natural language processing(NLP) tasks, and the results show that snapshot boosting can get a more balanced trade-off between training expenses and ensemble accuracy than other well-known ensemble methods.

关键词： ensemble learning deep learning boosting neural network snapshot ensemble

来源：评论

学校读者我要写书评

暂无评论

performance evaluation of SLIM and DRBL diskless PC clusters on fedora core 3

Performance evaluation of SLIM and DRBL diskless PC clusters...

引用

6th International Conference on Parallel and Distributed Computing, Applications and Technologies, PDCAT 2005

作者： Yang, Chao-Tung Chen, Ping-I. Chen, Ya-Ling High-Performance Computing Laboratory Department of Computer Science and Information Engineering Tunghai University Taichung 40704 Taiwan

ISBN: (纸本)0769524052

In this paper, we introduce our experiments on SLIM and DRBL diskless PC clusters. We constructed them by using 16 machines and only one disk. We run the matrix multiplication and bioinformatics software to evaluate their performance. We find that the performance of SLIM has a great improvement, and the system setup time is much less than before. The network loading of DRBL is also very high. The system boot-up time is no difference between these two systems. The best way to construct the diskless Linux cluster is to eliminate the image size. It can make the nodes have more memory space to handle the program and ease the network loading. © 2005 IEEE.

关键词： Personal computers

来源：评论

学校读者我要写书评

暂无评论

Robust laser self-mixing displacement demodulation viacontinuous wavelet–Hilbert transform for high-precision accelerometercalibration

引用

Applied Optics 2025年第16期64卷 4559-4567页

作者： Zhikun Chang Song Song Dongbai Xue Chunling He Zhoumiao Shi Jing Yu Ming Kong Yuying Xie Xiao Deng Tongbao Li Xinbin Cheng Institute of Precision Optical Engineering Tongji University Shanghai 200092 China National Metrology and Testing Center for Integrated Circuit Measurement and Inspection Equipment Industry (Shanghai) Tongji University Shanghai 200092 China MOE Key Laboratory of Advanced Micro-Structured Materials Tongji University Shanghai 200092 China Shanghai Frontiers Science Center of Digital Optics Tongji University Shanghai 200092 China Shanghai Professional Technical Service Platform for Full-Spectrum and High-Performance Optical Thin Film Devices and Applications Tongji University Shanghai 200092 China School of Physics Science and Engineering Tongji University Shanghai 200092 China School of Computer Science and Technology Zhejiang University of Water Resources and Electric Power Hangzhou 310018 China Shenzhen Institute of Technology Innovation NIM Shenzhen 518107 China College of Metrology and Testing Engineering China Jiliang University Hangzhou 310018 China

The laser self-mixing grating interferometer based on Cr atomlithography gratings hasbeen applied to the primarycalibration of accelerometers due to its compact structure, low cost,high accuracy, and directon-site traceability. However, the high line density of Cr gratings(4700 l/mm) introduces dense outliers in interferometricsignals, complicating displacement demodulation via conventionalderivative-based methods and causing frequent phase jumps. To addressthis challenge, we propose a hybrid algorithm integrating thecontinuous wavelet transform and the Hilbert transform, which enablesrobust displacement demodulation under high-noise *** validation on a commercial MEMS accelerometerdemonstrated exceptional accuracy: 100 consecutive data segments weresuccessfully demodulated with a displacement fitting goodness of $R^2 = 0.9964$ ( $\sigma_{R_2} =0.0027$ ), and the derived sensitivitydeviated by only 0.1% from the nominal value. This algorithmestablishes a paradigm for the high-accuracy dynamic calibration ofinertial sensors in field applications.

关键词： Laser interferometry Lithography Phase shift Refractive index Systems design Wavelet transforms

来源：评论

学校读者我要写书评

暂无评论

Computation speedup in the dynamic simulation of MEMS by macromodels

引用

自然科学进展(英文版) 2003年第3期13卷 219-227页

作者： LIN Wuzhong LIANG Yanchun LEE Kwok Hong LIM Siak Piang LEE Heow Pueh Institute of High Performance Computing Singapore 117528 Institute of High Performance Computing Singapore 117528 College of Computer Science and Technology Jilin UniversityChangchun 130012 China Department of Mechanical Engineering National University of Singapore Singapore 119260

A doubly clamped microbeam actuated by electrostatic force with squeezed gas film damping is a well-known and standard micro-device in microelectromechanical system (MEMS) for many researchers to demonstrate how reduced-order dynamic macromodel is an effective way to faithfully capture the device behaviors. However it still takes time to directly recompute the time-dependant nonlinear terms in macromodels which are generated by a proper orthogonal decomposition (POD) method with Galerkin procedure at every time step during the macromodel simulation. This paper proposes two methods for speeding up the computation of macromodel simulations. In the first method, the computation speedup is achieved based on the concept of precomputation upon the basis functions are available. In the second method, cubic splines approximation is used to interpolate the basis functions and their first and second derivatives, and spatial integration is performed by application of the Gaussian quadrature. Numerical results show both methods could enhance the efficiency of the macromodel simulation compared with our previous computation results.

关键词： MEMS macromodels model order reduction proper orthogonal decomposition

来源：评论

学校读者我要写书评

暂无评论

Using grid computing and PVFS2 technologies for construction of an e-learning environment

Using grid computing and PVFS2 technologies for construction...

引用

5th IEEE International Conference on Advanced Learning Technologies, ICALT 2005

作者： Yang, Chao-Tung Ho, Hsin-Chuan Pan, Chien-Tung High-Performance Computing Laboratory Department of Computer Science and Information Engineering Tunghai University Taichung 40704 Taiwan

ISBN: (纸本)0769523382

In recent years, e-Learning has become a popular method of learning. Generally, an e-Learning Platform which provided multi-media content required a high capacity storage device such as NAS (Network Attached Storage) or SAN (Storage Area Network). However, many schools with insufficient budgets cannot afford this type of expensive equipment. Thus, we employ Grid Computing and PVFS (Parallel Virtual file system) technology to integrate the idling storage resources in the school as a means to substitute the purchase of an expensive high-level storage server. In this research we will link several sets of PCs in the school to make them armed with the storage and computing capacity like that of a high-end server. We hope the goal of sharing and reuse of resources among the schools can be achieved. © 2005 IEEE.

关键词： Distributed computer systems

来源：评论

学校读者我要写书评

暂无评论

Using data grid technologies to construct a digital library environment

Using data grid technologies to construct a digital library ...

引用

ITRE 2005 - 3rd International Conference on Information Technology: Research and Education

作者： Yang, Chao-Tung Ho, Hsin-Chuan High-Performance Computing Laboratory Department of Computer Science and Information Engineering Tunghai University Taichung 40704 Taiwan

ISBN: (纸本)0780389328

Since the beginning of the 21st century, knowledge has been accumulating at a tremendous speed. Access to global books, literature, and data are continually increasing in large quantities. With the development of Internet and the rapid advancement of information technology, a new knowledge transfer model has been developed: Books and other forms of digitized data provide readers with the most convenient methods to search for and obtain library content. We propose a Global Digital Library Grid concept This digital library organization is not only to include new members (new libraries or new museums) flexibility, but also not affect the system and framework of the original Grid member. As the organization grows, it will form an enormous Virtual Grid Digital Library to provide readers with speedy Knowledge Service that will meet their individual requirements. © 2005 IEEE.

关键词： Digital libraries

来源：评论

学校读者我要写书评

暂无评论

AI Linguistics

Natural Language Processing Journal

引用

Natural Language Processing Journal 2025年 10卷

作者： Guosheng Zhang Department of Computer Engineering San Jose State University San Jose USA The Center for High Precision Patterning Science Lawrence Berkeley National Laboratory Berkeley USA

This research investigates the development of a linguistics for artificial intelligence (AI) to demystify the ”black box” of AI. At its core, the language of AI is Embedding—a novel high-dimensional, intelligent language. Embedding exhibits dual characteristics: it operates both as a semantic domain and as a mathematical point. This duality enables Embedding to maintain the discrete, symbolic nature of human languages while facilitating continuous operations in high-dimensional spaces, unlocking significant potential for advanced intelligence. A series of specialized experiments were designed to explore Embedding’s intrinsic properties, including its behavior as a semantic cloud in high-dimensional space, its degrees of freedom, and spatial transformations. Key findings include the discovery of substantial redundant dimensions in embeddings, confirmation that embeddings lack critical dimensions, and the measurement of engineering dimensions in natural language. This research also establishes the linguistic foundations and application limits of techniques such as dropout strategies, AI model distillation, and scaling laws among others. Building on these insights, we propose innovative solutions across several fields, including AI architecture design, AI reasoning, domain-based embedding search, and the construction of a multi-intelligence spectrum for embeddings. Ultimately, we introduce a foundational methodology for embedding everything from real-world into the AI world, providing a comprehensive reference framework for the evolution of artificial general intelligence (AGI) and artificial superintelligence (ASI). Additionally, this research explores linguistic approaches to the co-evolution of human intelligence and artificial intelligence.

关键词： AI architecture Embedding augmentation Embedding dimensionality Embedding domain General embedding

来源：评论

学校读者我要写书评

暂无评论

Ontology-based content organization and retrieval for SCORM-compliant teaching materials in data grids

引用

Future Generation computer Systems 2009年第6期25卷 687-694页

作者： Shih, Wen-Chung Yang, Chao-Tung Tseng, Shian-Shyong Department of Information Science and Applications Asia University Taichung 41354 Taiwan High-Performance Computing Laboratory Department of Computer Science Tunghai University Taichung 40704 Taiwan Department of Computer Science National Chiao Tung University Hsinchu 300 Taiwan

With the rapid growth of e-Learning, a tremendous amount of learning content has been developed by numerous providers. Recently, the Sharable Content Object Reference Model (SCORM) has been widely accepted as a standard of e-Learning for users to share and reuse various teaching materials. Data grids, characterized by their goal to manage large-scale dataset, are promising platforms to support sharing of geographically dispersed learning content. However, current data grid standards have not provided complete solutions to content-based information retrieval. To increase the precision of content retrieval on data grids, our idea is to propose an ontology-based approach to organize and retrieve learning content in geographically dispersed repositories. We designed a layered architecture to enable learning content organization and retrieval on data grids, implemented in a metropolitan-scale grid environment. Experimental results show that the proposed approach can precisely retrieve SCORM-compliant learning content. © 2009 Elsevier B.V. All rights reserved.

关键词： Information retrieval

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：