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2011 7th International Conference on Computational Intelligence and Security, CIS 2011

作者： Li, Wei Li, Guangye Liu, Chunlei Key Lab. of Beijing Network Technology School of Computer Science and Technology Beihang University Beijing China

ISBN: (纸本)9780769545844

Query privacy protection is an important part of the privacy protection in LBS. Currently, query privacy protection mainly consider the two typical attack models: query sampling attack and query homogeneity attack. The two attack model can be prevented by ensuring that cloaking regions satisfy k-sharing property or l-diversity property, however, when the overall POI (point of interests) distribution is non-uniform, attackers may still infer a specific user's query content with a high probability, which we refer to as skew attack. To address this issue, we modify the t-closeness model which is widely used in the data privacy protection, then we propose the QueryAwareCloak algorithm which is query-aware when generating cloaking regions. Finally, we verify the validation and effectiveness of the model and algorithm by experiments. © 2011 IEEE.

关键词： data privacy

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Improved quantum "Ping-pong" protocol based on GHZ state and classical XOR operation

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science China(Physics,Mechanics & Astronomy) 2011年第9期54卷 1612-1618页

作者： LI Jian JIN HaiFei JING Bo State Key Lab of Network and Switching Technology Beijing University of Posts and Telecommunications Beijing 100876 China Department of Computer Science Beijing Institute of Applied Meteorology Beijing 100029 China

In order to transmit the secure message, a deterministic secure quantum direct communication protocol which was called ＂Ping-pong＂ protocol was proposed by Bostrrm and Felbinger [Bostrom K, et al. Phys Rev Lett, 2002, 89： 187902]. But the protocol was proved very vulnerable, and can be attacked by an eavesdropper. An improved ＂Ping-pong＂ protocol is presented to overcome the problem. The GHZ state particles are used to detect eavesdroppers, and the classical XOR operation which serves as a one-time-pad is used to ensure the security of the protocol. During the security analysis, the method of the entropy theory is introduced, and three detection strategies are compared quantitatively by using the constraint between the information which an eavesdropper can obtain and the interference introduced. If the eavesdropper gets the full information, the detection rate of the original ＂Ping-pong＂ protocol is 50%; the detection rate of the second protocol which used two particles of EPR pair as detection particles is also 50%; and the detection rate of the presented protocol is 75%. In the end, the security of the pro-posed protocol is discussed. The analysis results show that the improved ＂Ping-pong＂ protocol in this paper is more secure than the other two.

关键词：＂Ping-pong＂ protocol XOR operation GHZ state eavesdropping detection protocol security

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Quantum Secure Direct Communication with Five-Qubit Entangled State

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Chinese Physics Letters 2011年第3期28卷 17-20页

作者： LIN Song GAO Fei LIU Xiao-Fen School of Mathematics and Computer Science Fujian Normal UniversityFuzhou 350007 Key Lab of Network Security and Cryptography Fujian Normal UniversityFuzhou 350007 State Key Laboratory of Networking and Switching Technology Beijing University of Posts and TelecommunicationsBeijing 100876

Recently,a genuine five-qubit entangled state has been achieved by Brown et al.[***.A 38(2005)1119].Later it was indicated that this state can be used for quantum teleportation and quantum state *** we build a quantum secure direct communication protocol with this state,and prove that it is secure in ideal *** the protocol,the sender performs unitary transformations to encode a secret message on his/her particles and sends them to the *** receiver then performs projective determinate measurement to decode the secret message ***,this protocol utilizes superdense coding to achieve a high intrinsic efficiency and source capacity.

关键词： conditions capacity quantum

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Green Multimedia Communications over Internet of Things

Green Multimedia Communications over Internet of Things

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IEEE International Conference on Communications

作者： Liang Zhou Min Chen Baoyu Zheng Jingwu Cui Key Lab of Broadband Wireless Communication and Sensor Network Technology (Nanjing University of Posts and Telecommunications) Ministry of Education School of Computer Science and Engineering Seoul National University

ISBN: (纸本)9781457720529

In this paper, we consider a power-aware multimedia communications over internet of things (IoT). Specifically, we consider a generic IoT scenario where a multimedia server provides heterogeneous applications without knowing the application's quality of experience (QoE) model and playout period. Our objective aims at dynamically adjusting the power allocation for each application over a uncertain period to maximize the system overall mean opinion score (MOS). Note that the practical QoE model can be observed over time, but the underlying functional relationship between the power and MOS is unknown. The highlight of this paper is to develop a dynamic powering algorithm, in which one learns the satisfaction function and optimizes power-aware user satisfaction with on-line operation. More precisely, the proposed algorithm performance is measured in terms of loss which denotes the MOS loss compared to the optimal one. Numerical simulation results validate the efficiency of the proposed algorithm.

关键词： Internet of things Green multimedia communications Dynamic powering QoE model

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BIPR: A new TCP variant over satellite networks

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Journal of China Universities of Posts and Telecommunications 2011年第SUPPL. 1期18卷 34-39页

作者： Xiao, Fu Sun, Li-Juan Wang, Ru-Chuan Fang, Yue-Chao College of Computer Science and Technology Nanjing University of Posts and Telecommunications Nanjing 210003 China Jiangsu High Technology Research Key Laboratory for Wireless Sensor Networks Nanjing 210003 China Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Nanjing 210003 China

Standard TCP perform poorly in satellite networks since the long delay, high bit error ratio and other characters. A new TCP variant, called BIPR for satellite networks is presented in this paper. Using the binary increase of window growth function, long bandwidth-delay product can be overcome, while probe method is also adopted in BIPR for conquer the high bit error rates in satellite links. Simulation results show that good performances in terms of throughput, link utilization and RTT fairness can be achieved in satellite networks using our method. © 2011 The Journal of China Universities of Posts and Telecommunications.

关键词： Satellites

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Web service selection with quantitative and qualitative user preferences

Web service selection with quantitative and qualitative user...

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2011 IEEE/WIC/ACM International Conference on Web Intelligence, WI 2011

作者： Wang, Hongbing Liu, Weihong Key Lab of Computer Network and Information Integration School of Computer Science and Engineering Southeast University 211189 China School of Computer Science Anhui Unversity of Technology 243002 China

ISBN: (纸本)9780769545134

Most existing approaches of Web service selection with user preferences are either quantitative or qualitative. However, using a qualitative or quantitative approach alone cannot handle all the non-functional properties(NFPs). To solve this problem, we present an approach of service selection with quantitative and qualitative user preferences, where qualitative preferences are modeled as a TCP-net and quantitative preferences are specified by using arbitrary positive numbers. Our approach consists of two steps, that is, qualitative selection based on qualitative preferences and quantitative selection based on quantitative preferences. We prove its effectiveness and verify its efficiency through extensive experiments. © 2011 IEEE.

关键词： Websites

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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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2011 7th International Conference on Computational Intelligence and Security, CIS 2011

作者： Zhu, Haiping Chen, Yan Yang, Yang Gao, Chao Department of Computer Science and Technology Xi'an Jiaotong University Shaanxi Province Key Lab. of Satellite and Terrestrial Network Tech. R and D Xi'an China Ministry of Education Key Lab. for Intelligent Networks and Network Security Xi'an Jiaotong University Xi'an 710049 China Department of Computer Science and Technology Xi'an Jiaotong University Xi'an China

ISBN: (纸本)9780769545844

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. © 2011 IEEE.

关键词： Average Sentence Similarity component Frequency Statistics Interactive Text Topic Partition

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A real-valued quantum genetic niching clustering algorithm and its application to color image segmentation

A real-valued quantum genetic niching clustering algorithm a...

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2011 IEEE International conference on Intelligent Computation and Bio-Medical Instrumentation, ICBMI 2011

作者： Chang, Dongxia Zhao, Yao Zheng, Changwen Institute of Information Science Beijing Jiaotong University Beijing Key Laboratory of Advanced Information Science and Network Technology Beijing 100044 China National Key Lab. of Integrated Information System Technology Institute of Software Chinese Academy of Sciences Beijing 100080 China

ISBN: (纸本)9780769546230

This paper proposes a novel genetic clustering algorithm, called a real-valued quantum genetic niching clustering algorithm (RQGN), which is based on the concept and principles of quantum computing, such as the qubits and superposition of states. Our algorithm can automatically clustering a data set into clusters without the need to know the number of clusters in advance. A dynamic identification of the niches is performed at each generation to automatically evolve the optimal number of clusters as well as the cluster centers of the data set. After getting the niches of the population, a Q-gate with adaptive selection of the angle for every niches is introduced as a variation operator to drive individuals toward better solutions. The experimental results show that RQGN algorithm has high performance, effectiveness and flexibility. © 2011 IEEE.

关键词： Clustering algorithms

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The availability of fast-flux service networks

The availability of fast-flux service networks

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2011 International Conference on Selected Topics in Mobile and Wireless networking, iCOST 2011

作者： Xu, Yunfeng Lu, Yansheng Guo, Zhengbiao School of Computer Science and Technology Hua Zhong University of Science and Technology Wuhan China Hubei Province Public Security Bureau to Defend the Corps Cyber Security Key Lab of Information NetWork Security Ministry of Public Security China

ISBN: (纸本)9781457720048

Fast-flux service network (FFSN) is consisted of a large scale of computers which have two main functions. Firstly, by providing a pool of huge number of IP addresses, the controller of FFSN can choose the IPs to provide services for their own domain name. Secondly, these computers can be served as agents to hide mother-ship. The character of FFSN is that the DNS records of domain name changes constantly at a high frequency. In this paper, we analyze the issue on the reliability of FFSN. The issue is resulted from the uncontrollable nodes of FFSN. We establish a model to describe the reliability by the theory of Poisson Process, and analyze the relationship between the reliability of FFSN and its size. © 2011 IEEE.

关键词： Reliability theory

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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

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

ISBN: (纸本)9780769543468

E-learning provides an unprecedented flexibility and convenience for learners via breaking the limitation of spacetime. 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. © 2011 IEEE.

关键词： E-learning

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