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International Symposium on knowledge Acquisition and Modeling, KAM

作者： Junhua Wang Wanli Zuo Fengling He Ying Wang College of Computer Science and Technology Jilin University Changchun China Key Laboratory of Symbolic Computation and Knowledge Engineering Ministry of Education China

Ontology definition is the base of ontology engineering, however, ontology definition currently seldom provides the accurate mathematical characteristics, namely, most of the ontology definitions cannot be described in a formal way, and the existing ontology definitions aren't complete enough. In this paper, it reviews and sums up the ontology definitions and the formal descriptions of ontology. And, it proposes a novel method of formal ontology definition by analyzing existing ontology definitions, which can make the ontology modeling primitives precise by delimiting the data types with functional description language. Lastly, puts forward the closed definition of ontology algebra, and gives a formal description of ontology algebra based on the new formal description of ontology.

关键词： Ontologies Algebra knowledge engineering Vocabulary Artificial intelligence Set theory knowledge acquisition Mathematical model educational institutions Computer science

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Improved Semantic Retrieval Based on Domain Ontology

Improved Semantic Retrieval Based on Domain Ontology

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International Conference on Fuzzy Systems and knowledge Discovery (FSKD)

作者： Dong-hui Yuan Da-you Liu Shi-qun Shen Pu Yan Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University Changchun China Jilin University Changchun Jilin CN

Semantic retrieval is a hot area of Web search technology constantly because of the growing information. This paper proposed a creative semantic retrieval method with Path Weight Semantic Distance (PWSD) algorithm which is improved from current model. Based on the domain ontology built by protege, PWSD considers both the hierarchy and the property restrictions of the concepts synthetically, and provides an accurate computation of semantic distance between conceptions. We have investigated the feasibilities, advantages and statistical significances from the comparison between our system and personalized categorization system (PCAT) and found that our system has high performances with 95% or higher statistical significance for short queries tasks.

关键词： Ontologies Information retrieval educational technology Web search Taxonomy Search engines Fuzzy systems educational institutions Computer science Laboratories

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Semantic-Based Hierarchicalize the Result of Suffix Tree Clustering

Semantic-Based Hierarchicalize the Result of Suffix Tree Clu...

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International Symposium on knowledge Acquisition and Modeling, KAM

作者： Guodong hu Wanli Zuo Fengling He Ying Wang College of Computer Science and Technology Jilin University Changchun China Key Laboratory of Symbolic of Computation and Knowledge Engineering Ministry of Education China

Suffix tree clustering is a fast, incremental, linear time clustering algorithm, but there are synonymous and label-contained relations among the result clusters. So just return these results to the users directly, would give them an added burden. In response to this problem, this paper presents a method that merging the semantic duplicate clusters and hierarchicalizing the label-contained clusters. The experimental results show that this method can effectively remove semantic duplication and hierarchicalize label-contained clusters clearly. It improves the organization of clustering results. To the STC search engine, this will provide users with better results and better classification.

关键词： Clustering algorithms Search engines Merging Java knowledge acquisition educational institutions Computer science educational technology Laboratories knowledge engineering

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Extending the Expression Ability of LAV Using Ontology Technique

Extending the Expression Ability of LAV Using Ontology Techn...

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International Conference on Information Technology and Computer Science, ITCS

作者： Hao Liang Fei Ren Wanli Zuo Aiqi Zhang College of Computer Science and Technology Jilin University Changchun China Department of Information Changchun Taxation College Changchun China Engineering of the Ministry of Education Key Laboratory of Symbolic Computation and Knowledge Engineering Ministry of Education Changchun China

Information fusion is an interdisciplinary research field aiming to combine and merge the information or data from different information sources. The output of information fusion system is a global schema through which users can get information or data from different dispersed sources. To generate a deep Web information fusion system is facing many challenges, because the nature of Web is different from those of traditional databases and multi-databases. The major challenge in a deep Web information fusion system is the data source modeling problem, which determine the technical method of the whole system. The query interfaces provided by the deep Web are the clues to disclose the hidden schemas. But the complicated semantic relationships in the query interfaces lead to the lower generality and ability of local as view (LAV) method in the traditional information fusion system. We present an approach that the semantic relationships between semantic related attributes can be evaluated by the WordNet, a kind of ontology instrument. The experiment is carried out on the famous dataset, and the result shows the efficiency of ontology extended LAV of building mappings between local views and mediator schema.

关键词： Ontologies databases Computer science educational institutions educational technology Fusion power generation Information technology Laboratories knowledge engineering Computer science education

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Generating the semantic containers for the query interfaces of deep web

Generating the semantic containers for the query interfaces ...

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International Conference on Management and Service Science, MASS 2009

作者： Hao, Liang Wanli, Zuo Jian, Chen Yunge, Mao College of Computer Science and Technology Jilin University Changchun 130012 China Department of Information Changchun Taxation College Changchun 130117 China Key Laboratory of Symbol Computation Knowledge Engineering of the Ministry of Education Changchun 130012 China Network Center of Changchun Taxation College Changchun 130117 China

ISBN: (纸本)9781424446391

With the myriad emergence of the online Web database, the Web is divided into a two layers information platform which is composed of Surface Web and Deep Web. The huge information hidden in the Deep Web is higher in the quality than the Surface Web. This interests the researchers of the traditional database community. In order to adapt the Web community, the idea of information fusion is further transformed. However, the nature of the Web is great different from the database in structure, principle and function. Query reformulation is one of the technical challenges. The only accessible method to get the information in the Deep Web is through the query interfaces provided by the Website of Deep Web. There are many semantic restrictions between the attributes in the query interface. Some attributes are co-occurred and the others are exclusive sometimes. To generate a valid query, we have to reconcile the key attributes and their semantic relations. To address the problem, a method based on the HTML codes is presented in this paper. Different kinds of semantic containers can be got through analyzing the codes of the query interface. The experiment is carried out on the famous dataset of Deep Web to show the feasibility of the method. ©2009 IEEE.

关键词： Semantics

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Impact of human factors on email worm propagation

Impact of human factors on email worm propagation

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IEEE Symposium on Web Society, SWS

作者： Xin Sun Yanheng Liu Jian Wang Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University Changchun Jilin China Jilin University Changchun Jilin CN

One of the most prevalent security problems in network is the rampant propagation of email worms. Unlike active worms, the email worm has to be activated by user action in order to spread further. This paper deals with modeling email worm propagation by analyzing and combining human factors. Impact of human factors on email worm propagation is investigated and discussed. Results of email worm propagation under a practical simulation environment show that the presented model well describes the email worm behavior. Conclusions are also drawn that infection probability decreases during evolution of worm infection due to the security consciousness rising, and highly connected nodes are more susceptible.

关键词： Human factors Computer worms Network topology Security Electronic mail educational institutions Computer science educational technology Laboratories Computer networks

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A Combined Method Based on Extension Rule and Resolution

A Combined Method Based on Extension Rule and Resolution

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International Conference on Artificial Intelligence and Computational Intelligence (AICI)

作者： Xia Wu Haihong Yu Ying Li College of Computer Science and Technology Jilin University Changchun China Key Laboratory of Symbolic Computation and Knowledge Engineering Ministry of Education Changchun China

Theorem proving based on the extension rule is a new reasoning method. It is, in a sense, potentially a complementary method to resolution based method. HRIER is a very fast extension rule algorithm with reduction rules and heuristic function. DR is a fast ordering-based restricted resolution method in proposition logic. In order to make best use of the respective characteristic of the extension rule method and resolution method, this paper proposes a combined algorithm CDE based on HRIER and DR. And then the soundness and completeness of it are proved. The experiment results show CDE is a fast SAT solver.

关键词： Erbium Logic Artificial intelligence Computer science Mathematics Computational intelligence educational institutions educational technology Laboratories knowledge engineering

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The design and analysis of distributed authentication scheme in VANET

The design and analysis of distributed authentication scheme...

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IEEE Youth Conference on Information, Computing and Telecommunication, YC-ICT

作者： Jian Wang Yanheng Liu Yu Jiao Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University Changchun Jilin China Jilin University Changchun Jilin CN

Vehicular ad hoc networks (VANETs) have many new characteristics unlike traditional network, such as centriclessness, mobility and multi-hop transmission, which invalidate conventional key managements. The fast development and successful application of trusted computing technology provide a potential solution to achieve effective authentication and trust evaluation. According to the VANETs with hierarchy organization structure like tank group, a new authentication and trust evaluation framework is proposed based on trusted computing technology, the concepts of "trusted attribute" and "trusted grade" are introduced, and the key management architecture as well as authentication process of mobile node are explained in detail. Moreover, the real applications of the presented framework in tank fight are discussed, and the trust evaluation methods and its argumentations in the presented framework are given.

关键词： Authentication Frequency Wire Electronic packaging thermal management Circuit simulation Scattering parameters Bonding Integrated circuit packaging Chip scale packaging Equivalent circuits

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Heuristics Propositional Extension Rule Method

Heuristics Propositional Extension Rule Method

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International Conference on Innovative Computing, Information and Control (ICICIC)

Theorem proving based on the extension rule is a new reasoning method. Based on the extension rule algorithm RIER, this paper presents a more efficient algorithm HRIER, which uses the heuristic strategy to guide the choosing of restricted searching space. The experiment results show HRIER improves the efficiency a lot, meanwhile it keeps the essence characteristic of extension rule method, namely it is still potentially a complementary method to resolution based methods.

关键词： Erbium Computer science Mathematics educational institutions educational technology Laboratories knowledge engineering Computer science education Control engineering education Frequency

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Web page malicious code detection based on embedded fingerprints

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Qinghua Daxue Xuebao/Journal of Tsinghua University 2009年第SUPPL. 2期49卷 2208-2214页

作者： Huang, Jianjun Liang, Bin Key Laboratory of Data Engineering and Knowledge Engineering of Ministry of Education School of Information Renmin University of China Beijing 100872 China

Web sites have become the main targets of many attackers. Signature-based detection needs to maintain a large signature database and Honeypot based methods are not efficient. Since attackers always make the malicious codes in Web pages difficult to detect by the browser users, their methods can be classified into various fingerprints. Various malicious codes were analyzed to identify 6 types of fingerprints. The system utilizes a spider integrated with script interpretation to fetch target Web pages and extract specific tags for detection by HTML parsing for matching with the fingerprints to detect malicious codes. This method needs fewer fingerprints than traditional detection methods and is more efficient. Results for 60 websites show that the system has a false negative rate of 2.63% and a false positive rate of 1.99%.

关键词： Websites

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