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26th Annual Computational Neuroscience Meeting (CNS*2017): Part 3 Antwerp, Belgium. 15-20 July 2017 Abstracts

BMC NEUROSCIENCE 2017年第SUPPL 1期18卷 95-176页

作者： [Anonymous] Department of Neuroscience Yale University New Haven CT 06520 USA Department Physiology & Pharmacology SUNY Downstate Brooklyn NY 11203 USA NYU School of Engineering 6 MetroTech Center Brooklyn NY 11201 USA Departament de Matemàtica Aplicada Universitat Politècnica de Catalunya Barcelona 08028 Spain Institut de Neurobiologie de la Méditerrannée (INMED) INSERM UMR901 Aix-Marseille Univ Marseille France Center of Neural Science New York University New York NY USA Aix-Marseille Univ INSERM INS Inst Neurosci Syst Marseille France Laboratoire de Physique Théorique et Modélisation CNRS UMR 8089 Université de Cergy-Pontoise 95300 Cergy-Pontoise Cedex France Department of Mathematics and Computer Science ENSAT Abdelmalek Essaadi’s University Tangier Morocco Laboratory of Natural Computation Department of Information and Electrical Engineering and Applied Mathematics University of Salerno 84084 Fisciano SA Italy Department of Medicine University of Salerno 84083 Lancusi SA Italy Dipartimento di Fisica Università degli Studi Aldo Moro Bari and INFN Sezione Di Bari Italy Data Analysis Department Ghent University Ghent Belgium Coma Science Group University of Liège Liège Belgium Cruces Hospital and Ikerbasque Research Center Bilbao Spain BIOtech Department of Industrial Engineering University of Trento and IRCS-PAT FBK 38010 Trento Italy Department of Data Analysis Ghent University Ghent 9000 Belgium The Wellcome Trust Centre for Neuroimaging University College London London WC1N 3BG UK Department of Electronic Engineering NED University of Engineering and Technology Karachi Pakistan Blue Brain Project École Polytechnique Fédérale de Lausanne Lausanne Switzerland Departement of Mathematics Swansea University Swansea Wales UK Laboratory for Topology and Neuroscience at the Brain Mind Institute École polytechnique fédérale de Lausanne Lausanne Switzerland Institute of Mathematics University of Aberdeen Aberdeen Scotland UK Department of Integrativ

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User Posting Behavior Analysis and Modeling in Microblog

User Posting Behavior Analysis and Modeling in Microblog

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International Conference on Intelligent information Hiding and Multimedia Signal Processing (IIHMSP)

作者： Yun Liu Weiguo Yuan Key Laboratory of Communication and Information Systems Beijing Jiaotong University Beijing China Computer Network Information Center Beijing Jiaotong University Beijing China

In this paper, we studied the statistical features of user posting behavior in microblog. The number of statuses exhibits a double power-law distribution and there is strong positive correlation between the number of forwarding and comments. According to the empirical analysis of user behavior in both group level and individual level respectively, we find the interval distribution of user posting behavior follows a power-law distribution and there is positive correlation between users' activity and the power-law exponent. There is obvious periodicity of the user posting time series to some extent. Further studies show that user's interests are influenced by the forwarding and comment behaviors. Considering these effects, this paper analyzed an improved user posting behavior model co-driven by user's interests and interactions. We also proposed another model where user's interests change with Logistic function. The simulation results verify these two models and provide reference to the studies of human dynamics in online social networks.

关键词： Analytical models Logistics Correlation Adaptation models Twitter Simulation

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A Hierarchical Multi-label Propagation Algorithm for Overlapping Community Discovery in Social networks

A Hierarchical Multi-label Propagation Algorithm for Overlap...

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2014 11th Web information System and Application Conference(第十一届全国web信息系统及其应用学术会议)

作者： Song Shi Yuzhong Chen Mingyue Fang Wanhua Li Shining College of Mathematics and Computer Science Fujian Key Laboratory of Network Computing and Intelligent Information Processing Fuzhou University FuZhou China

ISBN: (纸本)9781479957286

Multi-label propagation algorithms (MLPAs) have nearly linear time complexity, but the accuracy and stability still need to be improved when applied to overlapping community *** from the idea that boundary nodes are more probable to appear in the overlapping regions of different communities, a Hierarchical Multi-label Propagation Algorithm (HMPA) based on node hierarchy and label propagation gain for overlapping community discovery in social networks is proposed in this paper, HMPA consists of three ***, HMPA utilizes LPAm to unfold initial non-overlapping ***, a PageRank-like method is proposed to mark the hierarchy of each node according to the initial partition of the first ***, multi-label propagation algorithm considering label propagation gain between nodes, which is calculated based on node hierarchy, is introduced to refine overlapping *** results on both the synthetic and real world networks show that the proposed algorithm can effectively solve the problems of traditional multi-label propagation algorithms in terms of accuracy and stability.

关键词： overlapping community detection multi-label propagation node hierarchy propagation gain

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A forensics tool of Foxmail client

A forensics tool of Foxmail client

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International Conference on Systems and Informatics (ICSAI)

作者： Lili Xie Guolong Chen College of Mathematics and Computer Science Fujian Provincial Key Laboratory of Network Computing and Intelligent Information Processing Fuzhou Fujian China

ISBN: (纸本)9781479954599

computer forensics is an important part of the computer crime investigation. So a Forensics system aimed to Foxmail data analysis and investigation is proposed in this paper. The system can index the email data based on Lucene technology and the MMSeg participle algorithm, and provides the full text retrieval of the email content function. Subsequently, a visual communication graph would be generated according to the retrieval results. Based on the communication graph, an algorithm on graphic structure analysis is proposed, and by means of centrality and minimum traffic filtering method, multilevel analysis is carried out on the graph, which can detect the possible suspicious personnel and their relationships and provide strong support for the computer crime investigation.

关键词： Electronic mail Forensics Postal services Indexes Filtering Personnel Algorithm design and analysis

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Arranging the layout of alphanumeric buttons-the role of passwords 21

Arranging the layout of alphanumeric buttons-the role of pas...

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21st ACM Conference on computer and Communications Security, CCS 2014

作者： Li, Xiangxue Yu, Yu Li, Qiang Qian, Haifeng Zhou, Yuan Weng, Jian Department of Computer Science and Technology East China Normal University China State Key Laboratory of Integrated Services Networks Xidian University China School of Electronic Information and Electrical Engineering Shanghai Jiaotong University China Network Emergency Response Technical Team Coordination Center China Computer Science Department Jinan University China

ISBN: (纸本)9781450329576

A typical but trivial layout of alphanumeric buttons in the touchscreen setting is to arrange the 10 digits and 26 letters in a natural order. This arrangement does not take into account the frequencies of letters and digits when the users touch the buttons to key in their passwords or messages. We examine large scale datasets of over 141 million passwords collected from several leading websites for social networking, Internet forums, gaming, dating, and various other online service providers in China, and find that the distribution of letters in passwords is quite close to that in Chinese language. Based on the letter/digit frequencies, we further propose an alphanumeric button layout scheme with the following advantages: the buttons are clicked as uniformly as possible, so that the lifetime of the touchscreen can be prolonged and finger oil residues may scatter more evenly over the button area of the screen;and in the meantime, the movements of users' fingers are improved to enhance good user experience when inputting messages. The idea behind the layout is potentially applicable to diversified races. Copyright is held by the author/owner(s).

关键词： Fasteners

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A Provably secure Certificate based ring signature without pairing

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International Journal of network Security 2014年第4期16卷 278-285页

作者： Qin, Zhiguang Xiong, Hu Li, Fagen School of Computer Science and Engineering University of Electronic Science and Technology of China No. 4 North Jianshe Road Chenghua District chengdu Sichuan 610054 China Key Lab of Network Security and Cryptology Fujian Normal University No. 8 Shangsan Road Cangshan District Fuzhou Fujian 350007 China State Key Laboratory of Information Security Institute of Software Chinese Academy of Sciences No. 19 Yuquan Road Shijingshan District Beijing 100190 China

In Eurocrypt 2003, Gentry introduced the notion of certificate-based encryption. The merit of certificate-based encryption lies in implicit certificate and no private key escrow. This feature is desirable especially for the efficiency and the real spontaneity of ring signature, which involve a large number of public keys in each execution. In this paper, we propose an efficient certificate-based ring signature scheme which does not require any pairing computation. Furthermore, this scheme is proven secure under the Discrete Logarithm assumption in the random oracle model. To the best of authors' knowledge, this is the first construction of certificate-based ring signature scheme in the literature that has such kind of feature.

关键词： Authentication

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Research on a security method for domain name resolution on the client side

Research on a security method for domain name resolution on ...

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2014 International Conference on computer Science and Systems Engineering（CSSE2014）

作者： W.Zhang W.Wang X.C.Zhang H.L.Shi Shandong Provincial Key Laboratory of Computer Networks Shandong Computer Science Center(National Supercomputer Center in Jinan) DNSLAB China Internet Network Information Center

ISBN: (纸本)9781784660543

With the development of information technology, the domain name system(DNS) has become a very popular application. DNS forms the logical backbone of the World Wide Web, and the service which the DNS provides is used on the order of a trillion times a day. DNS security has garnered quite a lot of interest, due to the DNS cache-poisoning attacks discovered by Dan Kaminsky. In this paper, a security method for domain name resolution on the client side is employed to detection the security of the DNS protocol, especially when it is under DNS cache-poisoning attacks. At first, the framework of this method is given and then the whole process of mathematic analysis is proposed. The initial results on mathematic analysis are also proposed in this paper. Through the experimental results it can be seen that the security method for domain name resolution on the client side is useful for protecting DNS attacks.

关键词： DNS DNS cache-poisoning attacks mathematic analysis

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Bottleneck Analysis for Data Acquisition in High-Speed network Traffic Monitoring

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China Communications 2014年第1期11卷 110-118页

作者： JIANG Wei TIAN Zhihong CAI Chao GONG Bei College of Computer Science Beijing University of Technology Beijing 100124 China School of Computer National University of Defense Technology Changsha 410073 China Key Laboratory of Information and Network Security Ministry of Public Security Shanghai 201204 China School of Computer Science and Technology Harbin Institute of Technology Harbin 150001 China

The increasing network throughput challenges the current network traffic monitor systems to have compatible high-performance data *** design of packet processing systems is guided by the requirements of high packet processing *** this paper,we depict an in-depth research on the related techniques and an implementation of a high-performance data acquisition *** the bottleneck analysis with the aid of queuing network model,several performance optimising methods,such as service rate increasing,queue removing and model simplification,are *** experiment results indicate that this approach is capable of reducing the CPU utilization ratio while improving the efficiency of data acquisition in high-speed networks.

关键词： data acquisition bottleneck ana- lysis queuing theory semi-polling

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Topic trend prediction based on wavelet transformation

Topic trend prediction based on wavelet transformation

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2014 11th Web information System and Application Conference(第十一届全国web信息系统及其应用学术会议)

作者： Mingyue Fang Yuzhong Chen Peng Gao Shuiyuan Zhao Songpan Zheng College of Mathematics and Computer Science Fujian Key Laboratory of Network Computing and Intelligent Information Processing Fuzhou University Fuzhou Fujian China

ISBN: (纸本)9781479957286

The research of topic trend prediction can be a good reference for maximizing the propagation effects of network advertisements as well as guiding and controlling the network *** paper proposes PTEP(the Prediction of Topic Energy Peak) method to model the life cycle of a topic and predicts the time when a hot topic will ***, taking the number and the authority of followers and the interest of users to a topic into consideration, we design a topic-related user authority (TRUA) algorithm to measure the authority of ***, we calculate the energy value considering both the tweets and users authority related to the ***,we measure the fluctuation of the energy value based on wavelet ***, we present rules to predict topic *** results show that our method can effectively predict the peak of a topic in advance with a low omission rate.

关键词： microblog topic trend prediction user authority aging theory wavelet analysis

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Quantitative Measurement of Coronary Artery Stenosis in CCTA Images Using a 2D Parametric Intensity Model

Quantitative Measurement of Coronary Artery Stenosis in CCTA...

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Annual International Conference of the IEEE Engineering in Medicine and Biology Society

作者： Guanyu YANG Xinglou ZHAO Lijun TANG Huzhong SHU Christine TOUMOULIN Lab of Image Science and Technology Key Laboratory of Computer Network and Information Integration (Southeast University) Dept. of Radiology the First Affiliated Hospital of Nanjing Medical University INSERM-U1099 LTSI Universite de Rennes 1

ISBN: (纸本)9781424479276

In this paper, we propose an approach based on 2D vessel model to segment the vessel lumen in three-dimensional coronary computed tomographic angiography (CCTA) images. The 2D parametric intensity model is introduced first to simulate the intensity distribution of vessel lumen with different size in the longitudinal images. Then the Levenberg-Marquardt method is applied to fit the model within a series of region-of interests defined in the longitudinal image. The estimated parameters of the model are employed to define the boundary points of vessel lumen. The detected boundary points of vessel lumen in six longitudinal images are transformed to the cross-sectional planes in order to calculate the degree of stenosis according to the luminal areas. Our proposed method was evaluated in ten CCTA images with ten reported non-calcified stenosis. The degree of each stenosis was computed according to the luminal area and compared with the standard reference given by radiologists. Experimental results show that our method can estimate the degree of stenosis with a high accuracy.

关键词： Image segmentation Arteries Fitting Solid modeling Three-dimensional displays Computational modeling Accuracy

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