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International Conference on information technology and computer Science, ITCS

作者： Ying-Hong Liang Jin-xiang Li Jun Cao De-pang Wang School of Mechanical and Electronic Engineering North East Forestry University Harbin China JiangSu Province Support Software Engineering Research and Development Center for Modern Information Technology Application in Enterprise School of Computer Engineering Suzhou Vocational University Suzhou China

Traditional English text chunking approach is to identify phrases using only one model and same features. It is shown that one model could not consider each phrasepsilas characteristics, and same features are not suitable to all phrases. In this paper, a multi-agent text chunking model is proposed. This model uses individual sensitive features of each phrase to identify different phrases. Through testing on the public training and test corpus, this multi-agent model is effective because F score of English chunking using this multi-agent model achieves to 95.70%, which is higher than the best result that has been reported.

关键词： information technology Testing Software engineering Research and development application software Learning systems Data mining Natural language processing Text processing computer science

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A query index for continuous queries on RFID streaming data

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Science in China(Series F) 2008年第12期51卷 2047-2061页

作者： Jaekwan PARK Bonghee HONG Chaehoon BAN Department of Computer Engineering Pusan National University Department of Internet Application College of Information & Technology

RFID middleware collects and filters RFID streaming data to process applications＇ requests called continuous queries, because they are executed continuously during tag movement. Several approaches to building an index on queries rather than data records, called a query index, have been proposed to evaluate continuous queries over streaming data. EPCglobal proposed an Event Cycle Specification （ECSpec） model, which is a de facto standard query interface for RFID applications. Continuous queries based on ECSpec consist of a large number of segments that represent the query conditions. The problem when using any of the existing query indexes on these continuous queries is that it takes a long time to build the index, because it is necessary to insert a large number of segments into the index. To solve this problem, we propose a transform method that converts a group of segments into compressed data. We also propose an efficient query index scheme for the transformed space. Comparing with existing query indexes, the performance of proposed index outperforms the others on various datasets.

关键词： RFID system middleware continuous query stabbing query query index

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Performance analysis of encrypted data files by improved RC4 (IRC4) and original RC4

Advances in Intelligent Systems and Computing

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Advances in Intelligent Systems and Computing 2008年 542卷 513-519页

作者： Dey, Hemanta Roy, Uttam Kumar Department of Computer Application Techno India College of Technology Kolkata India Department of Information Technology Jadavpur University Kolkata India

ISBN: (纸本)9789811032226

In Cryptography, RC4 is one of the best known stream cipher from the last two decades in steam cipher family and it’s already achieved the trust of many organizations after its code become public. Many Eminent researchers like Roos and et al. established that RC4 contains weakness and biasness in its internal stages. Most of the researcher feels that in KSA part of RC4 components contain most bias values related to the keys. If the KSA part generates strong output as for input of PRGA then resultant stream become more random. Already we proved and published that Improved RC4 (IRC4) gives better result compare to original RC4 in the generation of stream keys for encryption of any plaintext file. In this paper we generate two types of output stream files from the algorithm of IRC4 and original RC4 and implemented the both types of stream files to make encrypted files using same plaintext files and generates corresponding cipher text files. The two set of encrypted type files are testing through NIST Statistical package and from where we find out that IRC4 returns better result related to randomness of the cipher texts files, from where we can conclude that IRC4 algorithm generates more random stream and indirectly increase the security. © Springer Nature Singapore Pte Ltd. 2018.

关键词： Cryptography

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A parallel optimization model for massive data stream application

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Ruan Jian Xue Bao/Journal of Software 2009年第SUPPL. 1期20卷 23-33页

作者： Sun, Xiao-Juan Sun, Ning-Hui Lei, Bin Key Laboratory of Technology in Geo-Spatial Information Processing and Application System Institute of Electronics The Chinese Academy of Sciences Beijing 100190 China Key Laboratory of Computer System and Architecture Institute of Computing Technology The Chinese Academy of Sciences Beijing 100190 China

While computing is entering a new phase in which CPU improvements are driven by the addition of multiple cores on a single chip, rather than higher frequencies. Parallel processing on these systems is in a primitive stage, and requires the explicit use and knowledge of underlying thread architecture. Based on the features of massive data stream application, this paper proposes three-level pipelining programming model of multithreading system, which realizes the new synchronization mechanism with no contention of shared structures and is capable to provide differential service for data streams. Then the paper applies the new model to remote sensing information processing system and backbone network intrusion detection system, and evaluates the improved system on several multicore platforms. In performance analysis, the optimized effects of backbone network intrusion detection system are evaluated in several aspects of throughput scalability on both SPARC T1 and x86 platforms, the impacts of different multithreading mapping methods on throughput, and the comparison of response time and service quality before and after optimization. The experimental results show that the system throughput has good scalability on both platforms, the values of response time are greatly improved and the prioritized streams achieve better response time with the differential service mechanism. © by Institute of Software, the Chinese Academy of Sciences. All rights reserved.

关键词： Metadata

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Multivariate classification of deep web sources based on maximum entropy model

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Journal of Computational information Systems 2008年第3期4卷 1093-1100页

作者： Huang, Li Zhao, Pengpeng Cui, Zhiming Wei, Fang Institute of Intelligent Information Processing and Application Soochow University Suzhou 215006 China Jiangsu Key Laboratory of Computer Information Processing Technology Soochow University Suzhou 215006 China

With the fast development of World Wide Web, the quantity of web information is increasing in an unprecedented pace, a great many of which are generated dynamically from background databases, and can't be indexed by traditional search engine, so we call them Deep Web. For the heterogeneous and dynamic features of Deep Web sources, classifying the Deep Web source by domain effectively is a significant precondition of Deep Web sources integration. In this paper, we consider the visible features of Deep Web and Maximum Entropy approach, and then on the basis of binary classification, we propose a new multivariate classification approach based on Maximum Entropy towards Deep Web sources. In addition, we propose a Feedback algorithm to improve the accuracy of classification. An experimental evaluation over real Web data shows that, our approach could provide an effective and general solution to the multivariate classification of Deep Web sources.

关键词： Search engines

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Restricted-domain question classification with the help of syntactic structures relationships and domain characteristic

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Journal of Computational information Systems 2008年第6期4卷 2659-2665页

作者： Meng, Xiangyan Yu, Zhengtao Zhang, Cheng Li, Yingwei Guo, Jianyi Mao, Cunli School of Information Engineering and Automation Kunming University of Science and Technology Kunming 650051 China Computer Technology Application Key Laboratory of Yunnan Province B The Institute of Intelligent Information Processing Kunming 650051 China

Question classification is an important step in a question answering system, the accuracy rate of question classification has great impact to a question answering system's following module. This paper proposed a question classification method which union syntactic structures relationships and domain characteristic. This method chooses sentence trunk and domain terms as classified characteristic, uses improved Bayes classify learning algorithm to structure question classification model. This paper has realized question classification in Yunnan tourism question answering system. Experiment results showed that the method is effective;the accuracy rate is 87.4% in 5 coarse and 79.5% in 23 fine in Yunnan traveling domain. © 2008 Binary information Press.

关键词： Syntactics

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Anti-counterfeit ownership transfer protocol for low cost RFID system

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WSEAS Transactions on computers 2008年第8期7卷 1149-1158页

作者： Chen, Chin-Ling Chen, Yu-Yi Huang, Yu-Cheng Liu, Chen-Shen Lin, Chia-I. Shih, Tzay-Farn Department of Computer Science and Information Engineering Chaoyang University of Technology Taichung 41349 Taiwan Department of Management Information Systems National Chung Hsing University Taichung 402 Taiwan Innovative Supply-Chain Application Division Identification and Security Technology Center Industrial Technology Research Institute Hsinchu 310 Taiwan

Radio Frequency Identification (RFID) is a new technology. In recent years, it is convenient and feasible in many applications. However, it also addresses many security issues which are worth discussing. The Counterfeit imposes a menace to industry worldwide, and the problem is not specific for certain products or countries. In 2003, Koh et al. describe a RFID system based on "track and trace" solution to apply into pharmaceutical supply chain management to fight the counterfeit. Moreover, there are applications to solve malicious manner were presented. But there always still existed some disputes and not conform Class 1 Generation 2 (C1G2) standards. Unfortunately, the trick is changeable. The Koh et al.'s scheme is at premise rather primitive. In order to tackle this problem, we propose an anti-counterfeit ownership transfer protocol for low cost RFID system. We only use a tag to be a storage media. The proposed scheme can ensure a secure transaction.

关键词： Authentication

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Integrated two Hopfield neural networks for automatic LED defect inspection

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Journal of the Chinese Society of Mechanical Engineers, Transactions of the Chinese Institute of Engineers, Series C/Chung-Kuo Chi Hsueh Kung Ch'eng Hsuebo Pao 2008年第1期29卷 45-51页

作者： Chang, Chuan-Yu Chang, Chuan-Wang Lin, Si-Yan Jeng, Mu-Der Department of Computer and Communication Engineering National Yunlin University of Science and Technology Douliou Yunlin Taiwan Department of Computer Application Engineering Far East University Tainan Taiwan Institute of Computer Science and Information Engineering National Yunlin University of Science and Technology Yunlin Taiwan Department of Electrical Engineering National Taiwan Ocean University Keelung Taiwan

The aim of the wafer defect inspection is to detect defective dies and discard them. The defective dies were usually identified through visual judgment with the aid of a scanning electron microscope. Dozens of engineers visually check wafers and hand-mark the defective regions leading to a significant amount of personnel cost. In this paper, a complete solution which consists of two Hopfield neural networks is proposed to detect the defective dies of wafer image. The experimental results show the proposed method successfully identifies the defective dies on LED wafers images with good performances.

关键词： Hopfield neural networks

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SOAVM: A Service-Oriented virtualization management system with Automated Configuration

SOAVM: A Service-Oriented virtualization management system w...

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4th IEEE International Symposium on Service-Oriented System Engineering, SOSE 2008

作者： Cheng, Zhili Du, Zhihui Chen, Yinong Wang, Xiaoying Tsinghua National Laboratory for Information Science and Technology Department of Computer Science and Technology Tsinghua University Beijing 100084 China Computer Science and Engineering Department Arizona State University Tempe AZ 85287 United States Department of Computer Technology and Application Qinghai University Xining 810016 China

ISBN: (纸本)9780769534992

Virtualization technologies are becoming more and more widely-used in the distributed computing area. In order to organize and manage various virtual machines in the SOA (Service-Oriented Architecture) environment more effectively, a virtualization management system called SOAVM is proposed and demonstrated in this paper. SOAVM addresses the limitation of virtual appliances in software quantities by employing ACS (Automated Configuration Service). ACS provides a more flexible way to conduct automated software configuration on virtual machines compared to the traditional virtual-appliance pattern. The system framework is designed, which defines all functions of SOAVM as services to comply with SOA. Then the system design is described, illustrating how ACS works. Furthermore, critical implementation issues are discussed in detail, which demonstrates that SOAVM is a feasible and efficient virtualization management system. © 2008 IEEE.

关键词： Virtual machine

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Research on MultiMedia Ontology bridging "semantic gap" between perceivable world and conceptual world

Research on MultiMedia Ontology bridging "semantic gap" betw...

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2008 the 1st IEEE International Conference on Ubi-Media Computing and Workshops, U-Media2008

作者： Man, Jun-Feng Yang, Lu-Ming Wu, Zhi-Hui Xu, Guo-Wen College of Information Science and Technology Central South University Changsha 410083 China College of Computer and Communication Hunan University of Technology Zhuzhou 412008 China College of Application Science Jiangxi University of Science and Technology Ganzhou 341000 China

ISBN: (纸本)9781424418657

The producers and customers have difficulties in organizing, finding, retrieving and accessing 'right' media info, reasons for this problem stem from a lack of interoperability and semantic metadata share between several applications for multimedia processing and understanding. Thus, it is necessary to design a set of media info understanding-oriented MultiMedia Ontology (MMO). In order to effectively solve the problem of "semantic gap" between perceivable media world and high-level conceptual world, a novel method of semantic-layering and semantic-abstracting step by step is adopted, viz. the abstract from primary perceptive level to high-level perceptive level by various perceptual components and the abstract from high-level perceptive level to high-level conceptual level by mathematical model such as Hierarchical Hidden Markov Model (HHMM). MMO is designed by re-engineering MPEG-7 with OWL DL rules, which includes core ontology, media ontology and domain ontology, the reason for such design is to be convenient to adopt existing ontology(such as MPEG-7 and DOLCE) and easy to be extended and reused. A use case of semantic-abstracting and semantic-annotating is showed to testify the effect of MMO. © 2008 IEEE.

关键词： Ontology

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