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2nd International Conference on Multimedia technology, ICMT 2011

作者： Zhu, Haiping Yang, Yang Chen, Yan Yu, Xiaolu Department of Computer Science and Technology Xi'an Jiaotong University Min. of Education Key Lab for Intelligent Networks and Network Security of xi'An Jiaotong University Xi'an China

ISBN: (纸本)9781612847740

This paper is based on identification and extraction of topic elements for Chinese interactive text. A topic segmentation method based on time sequence is achieved. Then a novel identification and extraction algorithm of topic elements is proposed. Firstly, noise filtering and Chinese word segmentation on the original corpus are executed. Secondly, the identifying and extracting method in group of mixed turn is used to extract the topic elements, such as time, place and figure. Finally, performance evaluation of identification recall, identification accuracy and extraction accuracy are achieved. The experimental results show the effectiveness of the algorithm. © 2011 IEEE.

关键词： Extraction

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A Trust-Personality Mechanism for Emotion Compensation

A Trust-Personality Mechanism for Emotion Compensation

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International Conference on Advanced Learning Technologies (ICALT)

作者： Jiwei Qin Qinghua Zheng Feng Tian Department of Computer Science and Technology Xi'an Jiaotong University Xi'an China Xi'an Jiaotong University Xi'an Shaanxi CN Ministry of Education Key Laboratory for Intelligent Networks and Network Security Xi'an Jiaotong University Xi'an China

E-learning provides an unprecedented flexibility and convenience for learners via breaking the limitation of space-time. Most researchers are only concerned about the learner's cognitive and construct a great amount of substantive digital learning resources, however they neglect of the learners' affect in current e-learning systems. In this paper, we focus primarily on the negative affect of learners, and propose an emotion compensation mechanism associated with trust and personality traits in traditional recommender technology. First, we analyze the difference between emotion compensation and traditional recommender. Next, the score of trust is calculated with historical behavior, otherwise depend on similarity of personality traits without historical experience. We use trustworthiness to replace similarity as prediction weight in trust filtering process. At last we do experiments with data collected in previous system named emotion-chatting. Compared with results of experiments between traditional recommender and trust-personality recommender, the average of accuracy is improved 4 points in percentage.

关键词： Recommender systems Electronic learning Accuracy Internet Psychology Context

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A Topic Partition Algorithm Based on Average Sentence Similarity for Interactive Text

A Topic Partition Algorithm Based on Average Sentence Simila...

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International Conference on Computational Intelligence and security

作者： Haiping Zhu Yan Chen Yang Yang Chao Gao Ministry of Education Key Laboratory of Intelligent Networks and Network Security Xi'an Jiaotong University Xi'an China Xi'an Jiaotong University Xi'an Shaanxi CN Department of Computer Science and Technology Xi'an Jiaotong University Xi'an China

Based on the research and analysis of interactive text properties, the word frequency statistics and synonyms merger are imported to obtain the keywords of interactive text. The Sentence similarity is used to describe the degree of coupling between sentences. Then a novel topic partition algorithm based on average sentence similarity is proposed. The experimental results show the effectiveness of the algorithm. Along with the mining of the deep correlations among texts, the algorithm precision and accuracy will be improved.

关键词： Partitioning algorithms Educational institutions Semantics Algorithm design and analysis computer science Electronic mail Correlation

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Cryptanalysis of two ID based password authentication schemes for multi-server environments

International Journal of Digital Content Technology and its ...

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International Journal of Digital Content technology and its Applications 2011年第1期5卷 87-94页

作者： Tan, Zuowen School of Information Technology Jiangxi University of Finance and Economics Nanchang 330032 Jiangxi Province China Key Lab of Network Security and Cryptology School of Mathematics and Computer Science Fujian Normal University Fuzhou 350007 Fujian Province China

Recently, Hsiang and Shih proposed a secure dynamic ID based remote user authentication scheme for multi-server environment. In this paper, we show that Hsiang and Shih's scheme is still vulnerable to off-line password guessing attacks, impersonation attacks and server spoofing attacks. And it cannot resist against extracting secret data by intercepting the authentication message. Chen, Huang and Chou proposed an improvement on Hsiang and Shih's scheme. However, we demonstrate that Chen, Huang and Chou's improved scheme suffers from impersonation attacks, password guessing attacks and server spoofing attacks. In addition, Chen et al.'s scheme cannot provide perfect forward security.

关键词： Authentication

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Improvement on a password authentication scheme for multi-server environments

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Journal of Convergence Information technology 2011年第1期6卷 218-228页

Since each user needs to have different passwords with different remote servers in the multi-server environment, it is impossible to apply the authentication methods in a single server environment to the multi-server environment. Recently, Ren-Chiun Wang, Wen-Shenq Juang, and Chin-Laung Lei proposed an ID based remote user authentication scheme for multi-server environments. However, we demonstrate that their ID based authentication scheme lacks the authenticity of the Registration Center to the server. Moreover, their ID based authentication scheme does not satisfy perfect forward security. In this paper, an improved multi-server password based smart card authentication scheme is proposed. Our scheme can remove their security flaws. Compared with the previous password based smart card authentication schemes for the multi-server environments, our proposed scheme can hold more security advantages.

关键词： Authentication

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Identification and extraction of topic elements for Chinese interactive text

Identification and extraction of topic elements for Chinese ...

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International Conference on Multimedia technology

作者： Haiping Zhu Yang Yang Yan Chen Xiaolu Yu Shaanxi Province Key Laboratory of Satellite and Terrestrial Network Technology Research and Development Ministry of Education Key Laboratory for Intelligent Networks and Network Security Xi''an Jiaotong University Xi'an China Department of Computer Science and Technology Xi'an Jiaotong University China Department of Computer Science and Technology Xi''an Jiaotong University Xi'an China Xi'an Jiaotong University Xi'an Shaanxi CN

ISBN: (纸本)9781612847719

关键词： XML Semantics security Nickel Accuracy Satellites

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A NEW THRESHOLD AUTHENTICATED ENCRYPTION SCHEME USING labOR-DIVISION SIGNATURE

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Journal of Systems Science & Complexity 2010年第6期23卷 1183-1194页

作者： Zuowen TAN School of Information Technology Jiangxi University of Finance and Economics Nanchang 330032 China Key Lab of Network Security and Cryptology School of Mathematics and Computer Science Fujian Normal University Fuzhou 350007 China.

This paper shows several security weaknesses of a threshold authenticated encryption scheme. A new threshold authenticated encryption scheme using labor-division signature is proposed without redundancy added to message blocks. On the assumptions of EDDH problems, the proposed scheme is secure against chosen-ciphertext attacks and existentially unforgeable against the chosen- message attacks in the random oracle model.

关键词： Authenticated encryption scheme public key cryptography threshold signature.

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Application of D-S Evidence theory to uncertainty of assessment result in E-government

Application of D-S Evidence theory to uncertainty of assessm...

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7th Web Information Systems and Applications Conference, WISA 2010, 5th Workshop on Semantic Web and Ontology, SWON 2010, 4th Workshop on Electronic Government technology and Application, EGTA 2010

作者： Xia, Bing Pan, Heng Zheng, Qiusheng Miao, Fengjun School of Computer Science Zhongyuan University of Technology Zhengzhou Key Lab of Computer Network Security Assessment Zhengzhou China

ISBN: (纸本)9780769541938

How to solve uncertainty of assessment result is an important issue in E-government. Current qualitative assessment are based on subjective qualitative evaluation and the rigid division of the quantitative data, however both methods are less objective ,precise and impartiality, as a result cause accuracy of assessment poorly. D-S Evidence theory is fit for processing the subjective judgment and synthesizing the uncertain knowledge. So, this theory is applied to the uncertainty of assessment results. Firstly used the classic 2/8 rule to build a dynamic contribution matrix. Then after weighted and normalized, we got a basic probability assignment MASS matrix. Final chosen one of the largest number of synthetic probability as assessment result. The algorithm has a strong versatility and an example is used to demonstrate its effectively in this text. © 2010 IEEE.

关键词： Matrix algebra

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An efficient automated trust negotiation framework supporting adaptive policies

An efficient automated trust negotiation framework supportin...

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2nd International Workshop on Education technology and computer Science, ETCS 2010

作者： Liu, Bailing Lu, Hongwei Zhao, Yizhu College of Computer Science and Technology Huazhong University of Science and Technology Wuhan China Key Lab of Information Network Security Ministry of Public Security Shanghai China

ISBN: (纸本)9780769539874

Automated trust negotiation (ATN) is an approach that establishes mutual trust between strangers wishing to share resources or conduct business by gradually requesting and disclosing digitally signed credentials. Previous work on improving negotiation efficiency mainly focuses on using history negotiation information, which may leak much unnecessary information and cannot improve the negotiation efficiency if both negotiators do not have appropriate history information. Thus in this paper, we enhance the negotiation efficiency from a new aspect adaptive policies. An ATN framework is designed to enhance the negotiation efficiency, which can not only simplify the negotiation process and reduce the number of exchanged credentials and credential validations whenever possible, but also avoid to revealing unnecessary information during negotiations. This framework presents a number of innovative features, such as the support for overlapping virtual organizations (VOs for short) to evaluate trustworthiness level, and the use of fine-grained adaptive policies to adjust policies based on the trustworthiness levels. © 2010 IEEE.

关键词： Efficiency

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An immune danger theory inspired model for network security monitoring

An immune danger theory inspired model for network security ...

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2010 International Conference on Challenges in Environmental Science and computer Engineering, CESCE 2010

作者： Sun, Feixian Han, Xinchao Wang, Jianhong School of Computer Science Zhongyuan University of Technology Zhengzhou China Zhengzhou Key Lab of Computer Network Security Assessment Zhengzhou China

ISBN: (纸本)9780769539720

In order to overcome the deficiencies of the traditional Artificial Immune Systems (AIS) in the security field of computer information system, an immune danger theory inspired model for network security monitoring is proposed in this paper. After introducing the back ground to the danger theory, a novel model for network security monitoring is presented. With the formal definitions of antigen, antibody, and detector improved, the computation method of affinity and danger signal are described. And then, the network attack monitoring algorithm is given. Theoretical analysis results show that the proposed model is feasible. Thus, it provides a good solution to the security assurance of computer information systems. © 2010 IEEE.

关键词： network security

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