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1st International Conference on Information Science and Engineering, ICISE2009

作者： Xu, Zezhong Zhuang, Yanbin Changzhou Key Laboratory of Software Technology and Application Changzhou China Department of Computer Information and Engineering Changzhou Institute of Technology Changzhou China

ISBN: (纸本)9780769538877

Image registration is widely used in 3D modeling. In this paper, an approach for multiview image registration based on augmented Kalman filter is proposed. The position and orientation of viewpoint are considered as augmented system state vector. A simplified system state and two system models are constructed. The system state is augmented and updated recursively. The position and orientation of each viewpoint is estimated. The proposed multiview image registration method can handle the uncertainty efficiently and the registration result is globally consistent. Some experimental results are provided to validate the performance of the proposed method. ©2009 IEEE.

关键词： Kalman filters

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A Hierarchy Controllable RBAC-Based User Access Control Model

A Hierarchy Controllable RBAC-Based User Access Control Mode...

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International Workshop on Intelligent Networks and Intelligent Systems (ICINIS)

作者： Weiliang Tan Peizhen Lin Bo Liang Hui Deng Yunnan Computer Technology Application Key Laboratory Kunming University of Science and Technology Kunming China

Access control is a significant concept in the fields of information security. However, to date, it is still difficult to design an effective access control mechanism to support numerous users incorporating numerous different roles. In this paper, we present a hierarchy controllable user access control model based on traditional RBAC (HCRBAC). The permission lock technique which can effectively control the permission's conferral and retrieval is presented in detail. A treelike multi-hierarchy permission management mechanism for any users and any roles is implemented so that the user in any hierarchy can effectively control its subordinate users' permissions respectively. HCRBAC can alleviate the drawbacks of current access control mode and implement the management among different administrated domains in the decentralized management.

关键词： Access control Permission Intelligent networks ANSI standards Safety NIST Intelligent systems Control system synthesis computer applications computer networks

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A Study on a Lightweight Scientific Workflow System for Astronomical E-Science Service

A Study on a Lightweight Scientific Workflow System for Astr...

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International Symposium on Intelligent Information technology application, IITA

作者： Feng Wang Hui Deng Bo Liang Ling Guo Kaifan Ji Yunnan Computer Technology Application Key Laboratory Kunming University of Science and Technology Kunming China

Network-grid computing is widely adopted in complex data computing and distributed data processing. In order to construct loosely-coupled application, the scientific workflow technique was used to invoke distributed services and data. However, there are many drawbacks in current scientific workflow system such as the complexity of manipulation and the difficulty of system deploy. In this paper, aims to the urgent requirement of astronomic data processing, we have a study on a lightweight scientific workflow system and discuss the critical techniques of the system implementation. Finally, we present a lightweight scientific workflow system, which named C-SWF, to support the complicated data processing in the field of astronomy. C-SWF fully implemented the critical features such as task customization, job scheduling, data movement, data's provenance and task re-run mechanism. Comparing with the existing scientific workflow system, C-SWF has many useful features that simplify the manipulation and deployment of the system.

关键词： Astronomy Data processing computer networks application software Distributed computing Resource management Intelligent networks Information technology computer applications Space technology

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Enhancing Dynamic Packet Filtering Technique with d-Left Counting Bloom Filter Algorithm

Enhancing Dynamic Packet Filtering Technique with d-Left Cou...

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International Workshop on Intelligent Networks and Intelligent Systems (ICINIS)

作者： Peizhen Lin Feng Wang Weiliang Tan Hui Deng Yunnan Computer Technology Application Key Laboratory Kunming University of Science and Technology Kunming China

In the previous study of dynamic packet filtering technique, Counting Bloom Filter (CBF) algorithm was adopted to implement the filtering rule's adding and deleting dynamically. However, the drawbacks of CBF, i.e., low memory utilization, limited rule capacity and high false positive rate, are obvious. In this paper, d-left Counting Bloom Filter (d-left CBF) algorithm is exploited to improve the performance of the dynamic packet filtering. Through the usage of the algorithm, compared with CBF, approximately 56 times memory space is saved. In addition, with the increasing of memory allocation, the false positive rate of d-left CBF decreases more significantly than CBF. The experimental results and corresponding analyses indicate that d-left CBF is feasible and high-efficient in the process of the dynamic packet filtering.

关键词： Filters Filtering algorithms application software Intelligent networks Central Processing Unit application specific integrated circuits Counting circuits Intelligent systems computer applications computer networks

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Influence of Network Bandwidth on Parallel Computing Performance with Intra-node and Inter-node Communication

Influence of Network Bandwidth on Parallel Computing Perform...

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International Workshop on Intelligent Networks and Intelligent Systems (ICINIS)

作者： Weiliang Tan Peizhen Lin Bo Liang Hui Deng Yunnan Computer Technology Application Key Laboratory Kunming University of Science and Technology Kunming China

As technologies such as symmetrical multiprocessing (SMP) and multicore processor (MCP) advanced, more and more computational cores are contained in one node. Therefore, parallel applications running on a cluster can exchange data among processes through either intra-node or inter-node communication. This gives rise to the question of how much network bandwidth impact on parallel computing performance when intra-node and inter-node communications exist in a certain proportion. In this paper, we try to analyze and estimate this impact via using communication mechanism of message passing interface (MPI) and multi-core technology. The results show that the proportion of intra-node communication to inter-node communication has a significant effect on performance when the network bandwidth is between 50~400Mib/s, especially about 200Mib/s.

关键词： Bandwidth Parallel processing computer networks Concurrent computing application software Intelligent networks Multicore processing Supercomputers Large-scale systems computer architecture

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Pen User Interactions Based on Pressure-Driven and Stroke-Driven Modes

Pen User Interactions Based on Pressure-Driven and Stroke-Dr...

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International Conference on Computational Intelligence and Software Engineering (CiSE)

作者： Jibin Yin Hua Liu Computer Technology Application Key Laboratory of Yunnan Province Kunming University of Science and Technology Kunming China

Pressure and strokes are the much natural input modalities from pens. This study investigates the potentials of coupling pressure and strokes with pen-based interactions by discussing the possible strategies of using them. Pressure can be used as discrete or continuous manners, which are explored by two presented techniques: two-layer operation and Pressure Cursor. An experiment was conduct to determine the pressure spectrum that can be controlled easily. There are two ways to employ strokes to produce a scalar value, which plays a parameter control role in pen-based interactions. The two mechanisms of using strokes to produce a value are examined, which are further demonstrated by a series of applied scenarios.

关键词： Pressure control Navigation computer applications application software Streaming media Mobile handsets Velocity control Mice Bandwidth Haptic interfaces

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A new algorithm of topical crawler

A new algorithm of topical crawler

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2nd International Workshop on computer Science and Engineering, WCSE 2009

作者： Li, Wei-Jiang Ru, Hua-Suo Zhao, Tie-Jun Zang, Wen-Mao Computer Application Key Laboratory of Yunnan Provice Kunming University of Science and Technology Kunming 650051 China Institute of Scientific and Technical Information of Kunming City Kunming Science and Tech. Building 371 Qingnian Road Kunming 650051 China School of Computer Science and Technology Harbin Institute of Technology Harbin 150001 China

ISBN: (纸本)9780769538815

The generic crawler provides more help to people for finding information in WWW. However, it has some drawback in terms of precision and efficiency because of its generality and no specialty. In this paper, we address two issues of the topical web crawler. One is how to make the definition of the topic;the other is how to sort of links to be downloaded in the queue efficiently. It aims to visit only relevant pages, and get a great scale of hyperlinks which link to the relevant pages. The crawl method in this paper is a novel one, which is based on the semi-structured features of the website and content information. The results of experiment show that it is a very effective method for focused crawler. © 2009 IEEE.

关键词： Web crawler

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Summary-based model of information retrieval in language model framework

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Journal of Computational Information Systems 2009年第3期5卷 1201-1207页

作者： Li, Weijiang Zhao, Tiejun Computer Application Key Laboratory of Yunnan Province Kunming University of Science and Technology Kunming 650051 China School of Computer Science and Technology Harbin Institute of Technology Harbin 150001 China

Standard IR treats the whole document as relevant, the implication of this being that using terms from non-relevant sections of these documents for IR may also cause query drift. This paper investigates a novel retrieval model that aims to concentrate more user's attention on the parts of the text that possess a high density of relevant information, while, at the same time, to provide enough information to support their retrieval decisions. It is proposed that an automatically generated summary of each document, biased to a user's query, can provide such a function. Based on the experimental results on TREC collections, it is showed the retrieval model based on summary is more effective than standard one based on document. 1553-9105/ Copyright © 2009 Binary Information Press.

关键词： Information retrieval

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A context-dependent approach to query expansion in information retrieval

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Journal of Computational Information Systems 2009年第3期5卷 1379-1384页

In practical applications of information retrieval, as the search engine, the query user submitted contains only several keywords usually. This will cause unmatched issue between words of relevant documents and user's query and have more serious negative effects on the performance of information retrieval. On the basis of analyzing of process of producing query, this paper puts forward a new method of query expansion on the basis of context and global information. The approach extracts related terms between documents and query through context and global information. The expansion terms are selected according to their relation to the whole query. At the same time, the position information between terms are considered. The experiment result on TREC data collection shows the method proposed by the paper, has 11-29% of the improvement all the time more than the language modeling method without expanding. Compared to the popular approach of query expansion, pseudo feedback, the method proposed in this paper has the competed average precision. 1553-9105/ Copyright © 2009 Binary Information Press.

关键词： Information retrieval

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Research on answer extraction method for domain question answering system(QA)

Research on answer extraction method for domain question ans...

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2009 International Conference on Computational Intelligence and Security, CIS 2009

作者： Mao, Cun-Li Li, Li-Na Yu, Zheng-Tao Han, Lu Guo, Jian-Yi Lei, Xiong-Li School of Information Engineering and Automation Kunming University of Science and Technology Kunming 650051 China Institute of Intelligent Information Processing Computer Technology Application Key Laboratory of Yunnan Province Kunming 650051 China School of Computer Science and Technology Kunming College of Metallurgy Kunming 650093 China School of Architecture and Arts Kunming College of Metallurgy Kunming 650093 China

ISBN: (纸本)9780769539317

The domain knowledge has a direct impact on the result of question - answering (Q & A) in the restricted domain Question Answering System (QA). In this paper, a method of answer extraction for domain Chinese question-and-answer (Q&A) is proposed, which based on the analysis of interrogative sentence and the answer type, carrying on the text retrieval with the help of the domain knowledge and obtaining the relevant paragraphs of the question as the candidate answer. For the question of numeral or list entity type, extracted the question center related domain entity as the answers by adopting the naming entity recognition. For the definition questions, the sentences or paragraphs with higher relevance can be extracted to become the answer based on the relevance ranking between the candidate sentences or paragraphs and questions by combined the computing method of keywords weighting and the method of semantic similarity between the sentences and questions. Experimented on the answer extraction in Yunnan tourism domain, the results show that more remarkable effects have been achieved by adopting the method of answer extraction from domain Chinese question-and-answer. © 2009 IEEE.

关键词： Domain Knowledge

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