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IEEE International Symposium on Geoscience and Remote Sensing (IGARSS)

作者： Xin-Lu Wang Björn Waske Jón Atli Benediktsson Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University Changchun China Faculty of Electrical and Computer Engineering University of Iceland Reykjavik Iceland

Classification of hyperspectral data with high spatial resolution from urban areas is investigated. The approach is an extension of existing approaches, using both spectral and spatial information for classification. The spatial information is derived by mathematical morphology and principal components of the hyperspectral data set, generating a set of different morphological profiles. The whole data set is classified by the Random Forest algorithm. However, the computational complexity as well as the increased dimensionality and redundancy of data sets based on morphological profiles are potential drawbacks. Thus, in the presented study, feature selection is applied, using nonparametric weighted feature extraction and the variable importance of the random forests. The proposed approach is applied to ROSIS data from an urban area. The experimental results demonstrate that a feature reduction is useful in terms of accuracy. Moreover, the proposed approach also shows excellent results with a limited training set.

关键词： Hyperspectral imaging Feature extraction Radio frequency Hyperspectral sensors Morphology Remote sensing Data mining Image reconstruction knowledge engineering Spatial resolution

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ON RESEARCH OF OPTIMIZATION STRATEGY FOR DYNAMIC BACKTRACKING

ON RESEARCH OF OPTIMIZATION STRATEGY FOR DYNAMIC BACKTRACKIN...

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2009 International Conference on Machine Learning and Cybernetics(2009机器学习与控制论国际会议)

作者： HONG-BO LI ZHAN-SHAN LI YANG AI HUI-YING DU Key Laboratory of Symbolic Computation and Knowledge Engineering for Ministry of Education Jilin University Changchun 130012 College of Computer Science and Technology Jilin University Changchun 130012

Constraint Satisfaction Problem is an important branch of Artificial Intelligence, one typical algorithm to solve Constraint Satisfaction Problem is the searching algorithm based on backtracking. The Dynamic Backtracking algorithm proposed by Ginsberg in 1993 is an efficient algorithm which uses backtracking integrates with constraint propagation. Now, according to the basic idea of dynamic backtracking, we put forward four implementary strategies and demonstrate that the efficiency and backtracking times of these four strategies are different The most efficient strategy of these four strategies is the Strategy2.1,it can significantly improve the efficiency and reduce the backtracking times. Anatomizing the results of experiments, we find the differences between these four strategies, then we propose an heuristic rules to improve dynamic backtracking algorithm on selecting a variable that has not been instantiated - Successful Assignment Principle. According to the Failure First Principle, we propose an optimization strategy that combine the Successful Assignment Principle with the Failure First Principle - Strategy 2.4. What is more ,the final test results show that efficiency of Strategy 2.4 is 1.595 ～2.227 times more than the that of Strategy 2.1.

关键词： Constraint satisfaction problem Dynamic backtracking

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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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A New Framework for Accessing Trusted Network

A New Framework for Accessing Trusted Network

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International Workshop on Intelligent Networks and Intelligent Systems (ICINIS)

作者： Jian Wang Yanheng Liu Xiangpeng Jia Xiaomin Liu Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University Changchun China Jilin University Changchun Jilin CN China Mobile Shenyang Branch Corporation Shenyang China

Trusted network connect (TNC), whose goal is to improve network security from source, now has become hot topic in security domain. We proposed a new access model for the terminals without meeting the requirements in TNC specifications. Also we discussed the work flow and communication process of presented model. Simulations show that the feasibility of the presented model used in the scenario where terminals fall short of network demand can pass the access authentication of network with TNC specifications.

关键词： Authentication Computer networks Protection Computer architecture Computer security Intelligent networks Data security Intrusion detection Access control Peer to peer computing

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Modeling Email Worm Propagation Using Game Theory

Modeling Email Worm Propagation Using Game Theory

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The First International Conference on Multimedia Information Networking and Security(第一届国际多媒体网络信息安全会议 MINES 2009)

作者： Xin Sun Yanheng Liu Jian Wang College of Computer Science and Technology Jilin University Changchun Jilin 130012 China Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University Changchun Jilin 130012 China

One of the most prevalent security problems in network is the rampant propagation of email worms. In this paper game theory is suggested as a method for modeling and computing the probabilities of expected behaviors of email users in the email worm propagation process. The game situation models the actions of the email users under the condition that at the time they open an attachment, the system may be infected. Results of email worm propagation simulation under a practical simulation environment show that well camouflaged worms spread more quickly and survive longer than naive worms, moreover, user's security consciousness and the update frequency of anti-virus software make great impact on email worm propagation.

关键词： Netwok security Game theory Email worm propagation User behavior

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The Ontology Based Semantic Evaluating Method in LAV

The Ontology Based Semantic Evaluating Method in LAV

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Pacific-Asia Conference on Circuits, Communications and Systems, PACCS

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

The Web has been dramatically deepened by the deep Web, which the traditional information fusion system shows disability to integrate. The myriad information hidden behind the deep Web attracts the considerable attention from the researchers. The key element in a deep Web information fusion system is the data source modeling problem, which determine the whole 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 low generality and ability of local as view (LAV) method in the traditional information fusion system. An approach of evaluating the semantic relationships between the attributes in the query interfaces by utilizing WordNet, a typical ontology technique, is presented in this paper. The semantic relationships between semantic related attributes are evaluated by the semantic calculating method of WordNet. The meaningless attributes is instantiated by instance information embedded in the interfaces in order to attach correlated semantic information. The experiment is carried out in the real life domains, and the result shows the efficiency of ontology based semantic evaluating method in LAV.

关键词： Ontologies Databases educational institutions Computer science educational technology Search engines Circuits Laboratories knowledge engineering Computer science education

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Escrow mechanism for personal security keys on IBE

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Tongxin Xuebao/Journal on Communications 2009年第11 A期30卷 75-80页

作者： Zou, Yue-Peng Ouyang, Dan-Tong He, Li-Li Bai, Hong-Tao College of Computer Science and Technology Jilin University Changchun 130012 China Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University Changchun 130012 China

A new escrow mechanism for personal security keys on IBE was proposed. This mechanism constructed a security trust system composed of private key generator, key management center, and user security component to set up a personal security key escrow model, thus providing identity validation, confidentiality and integrality check for the application, backup, recovery, and renewal of the escrowed keys. The mechanism, taking advantage of the IBE, simplified the process of authentication and encryption, mede it possible for users to complete independently the escrow of personal security keys. Therefore, it is more practical than traditional key escrow schemes.

关键词： Authentication

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Novel trusted authentication and evaluation framework in VANET

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Tongxin Xuebao/Journal on Communications 2009年第1 A期30卷 107-113页

作者： Wu, Jing Liu, Yan-Heng Wang, Jian Li, Wei-Ping College of Computer Science and Technology Jilin University Changchun 130012 China Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University Changchun 130012 China Changchun Jilin University Information Technologies Co. Ltd. Changchun 130012 China

Vehicular ad hoc networks (VANET) have many new characteristics unlike tranditional 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 VANET with self-organization, a new authentication and trust evaluation framework was proposed based on trusted computing technology, the concepts of "trusted attribute" and "trusted grade" were introduced, and the key management architecture as well as authentication process of mobile node were explained in detail. Moreover, the potential real application of the presented framework was discussed, and the trust evaluation method and its argumentation in the presented framework were given.

关键词： Authentication

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RETRACTED ARTICLE: The IDS model adapt to load characteristic under IPv6/4 environment

RETRACTED ARTICLE: The IDS model adapt to load characteristi...

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2008 International Conference on Wireless Communications, Networking and Mobile computing, WiCOM 2008

作者： Wei, Chuyi Fang, Zhiyi Li, Wei Liu, Xiaonan Yang, Hongjun Key Laboratory of Symbolic Computation and Knowledge Engineering Jilin University Ministry of Education Changchun 130012 China

ISBN: (纸本)9781424421084

Thih paper proposed an intrusion detection system framework adapt to load characteristic under IPv6/4 environment; it uses decision-tree-based classification method, under guidance of a certain flow, creates dynamically rule matching tree adapt to load characteristic, reduces greatly the rule set that per packet or event need to be detected, improves the detection efficiency, can be utilized to solve the high packetloss problem; this paper proposed to make use of Petri net to built a mode to the complicated aggressive behavior, form the complicated aggressive rule library, improve the detection accuracy rate; in view of IPv6 security problem, make use of Snort rule description language, construct the detection rule under IPv6 environment; finally construct the platform in the local area network, carry on the simulation experiment. The experiment proved fully the feasibility and validity of intrusion detective method adapt to load characteristic under IPv6/4 environment. © 2008 IEEE.

关键词： Intrusion detection

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RETRACTED ARTICLE: Experimental research on a new authentication protocol for wireless communication network based on WiMAX

RETRACTED ARTICLE: Experimental research on a new authentica...

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2008 International Conference on Wireless Communications, Networking and Mobile computing, WiCOM 2008

作者： Li, Ruixue Fang, Zhiyi Xu, Peng Xiao, Wei Wang, Wei Key Laboratory of Symbolic Computation and Knowledge Engineering Jilin University Ministry of Education Changchun 130012 China School of Computer Northeast Normal University Changchun 130000 China

ISBN: (纸本)9781424421084

According to the security features of WiMAX-based wireless communication network, a fresh new wireless communication authentication protocol called WCAP was advanced and designed adopting the dual-key authentication scheme based on trusted third party; its security was analyzed by two means of technical realization and formal analysis; the protocol was implemented by devising an integrated security authentication module; a test environment was set to test function and performance of the protocol. The analysis and test results show that WCAP achieves the original safety design goals on the premise of its correctness and performance. © 2008 IEEE.

关键词： Network security

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