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9th International Conference on Body Area Networks, BODYNETS 2014

作者： Hayajneh, Thaier Vasilakos, Athanasios V. Almashaqbeh, Ghada Mohd, Bassam J. Imran, Muhammad A. Shakir, Muhammad Z. Qaraqe, Khalid A. School of Engineering and Computing Sciences New York Institute of Technology New York United States Computer Science Department Kuwait University Kuwait Dept. of Computer Science and Engineering University of Notre Dame Notre DameIN United States Computer Engineering Dept. Hashemite University Zarqa Jordan Center for Communication Systems Research University of Surrey United Kingdom Dept. of Electrical and Computer Engineering Texas A and M University at Qatar Qatar

ISBN: (纸本)9781631900471

Merging WBAN systems with cloud computing is an efficient solution to overcome limitations inherent in WBAN, especially in critical human-related applications such as remote health monitoring. In cloud-based WBAN, the nodes are classified into WBAN sensors that report measurements about the human body and WBAN actuators that receive commands from the medical staff and perform actions. Authenticating these commands is a critical security issue as any alteration may lead to serious consequences. This paper presents a light-weight public-key authentication protocol for cloud-based WBAN systems. The proposed protocol is based on the modified Rabin authentication algorithm which is customized in this paper by making some of its components run in parallel. To prove the efficiency of the modified Rabin we implemented the algorithm with different hardware settings using Tmote Sky motes. The Rabin algorithm with and without the parallel settings is also programmed on FPGA to evaluate its design and performance. The results show that secure, direct, instant, and authenticated commands can be delivered from the medical staff located at the cloud side to the WBAN nodes located in/on the human body. Compared to other public-key protocols implemented on the motes, Rabin algorithm achieved extremely faster verification and reasonable signature gen- eration speed. Moreover, the suggested parallel settings of the Rabin signature generation significantly reduced the delays( by almost 80%) which is a critical issue in WBAN applications. Copyright © 2014 ICST.

关键词： Authentication

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Self-Adaptive Topic Model： A Solution to the Problem of ＂Rich Topics Get Richer＂

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China Communications 2014年第12期11卷 35-43页

作者： FANG Ying School of Computer Science and Technology Beijing Institute of Technology Beijing 100081 R R. China Beijing Engineering Research Center of High Volume Language Information Processing and Cloud Computing Beijing 100081 P. R. China School of computer & technology ShangQiu Normal College ShangQiu HeNan 476000 P. R. China

The problem of "rich topics get richer"(RTGR) is popular to the topic models,which will bring the wrong topic distribution if the distributing process has not been *** standard LDA(Latent Dirichlet Allocation) model,each word in all the documents has the same statistical *** fact,the words have different impact towards different *** the guidance of this thought,we extend ILDA(Infinite LDA) by considering the bias role of words to divide the *** propose a self-adaptive topic model to overcome the RTGR problem *** model proposed in this paper is adapted to three questions:(1) the topic number is changeable with the collection of the documents,which is suitable for the dynamic data;(2) the words have discriminating attributes to topic distribution;(3) a selfadaptive method is used to realize the automatic *** verify our model,we design a topic evolution analysis system which can realize the following functions:the topic classification in each cycle,the topic correlation in the adjacent cycles and the strength calculation of the sub topics in the *** experiment both on NIPS corpus and our self-built news collections showed that the system could meet the given demand,the result was feasible.

关键词： topic model infinite Latent Dirichlet Allocation Dirichlet process topic evolution

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Microblog Keyphrase Extraction Based on Similarity Features

Microblog Keyphrase Extraction Based on Similarity Features

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2013 International Conference on Advanced computer science and Electronics Information(ICACSEI 2013)

作者： Lizi Liao Heyan Huang Beijing Engineering Applications Research Center of High Volume Language Information Processing and Cloud Computing (BIT) School of Computer Science and Technology Beijing Institute of Technology

This paper proposes to extract keyphrases from microblog based on similarity features. We analyze a large number of microblogs and find an interesting phenomenon that people use various nugget phrases to express the same factoid while many of these nugget phrases show similarity relationships. We propose a similarity features based context-sensitive topical PageRank method for keyphrase ranking. We evaluate our proposed methods on a large microblog dataset. Experiments show that our system is very effective for keyphrase extraction.

关键词： Keyphrase extraction, Similarity features, Graph- based model

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A General P2P Scheme for Constructing Large-Scale Virtual Environments

A General P2P Scheme for Constructing Large-Scale Virtual En...

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IEEE International Symposium on Parallel and Distributed Processing Workshops and Phd Forum (IPDPSW)

作者： Wei Wang Guisong Yang Naixue Xiong Xingyu He Wenzhong Guo Cloud Computing Center Chinese Academy of Science Dongguan P.R.Chinayanwan School of Optical-Electrical and Computer Engineering University of Shanghai for Science and Technology Shanghai P.R. China School of Computer Science Colorado Technical University CO USA College of Mathematics and Computer Science Fuzhou University China

To construct various Virtual Environments (VEs) is essential for geographically dispersed users to real-time interact and roam in various virtual worlds(e.g., virtual city, massively multiuser online games). However, this operation has been hindered by the contradiction between explosively growing 3D contents and relatively slower increasing resources (e.g., bandwidth, CPU resource). This work thus designs a Peer-to-Peer (P2P) based scenes progressive downloading (i.e., P2P 3D streaming) scheme for constructing large scale VE (named as PSVE) efficiently. Main work of this paper is elaborated as follows: determination of downloading priority for all Level of Detail (LoD) pieces of models, discovery and selection a node to distribute required scenes by two strategies respectively. Simulations based on real network conditions are implemented to evaluate the performance of PSVE. The simulation results demonstrate that our work has achieved high performance in terms of streaming quality, overhead and stability, our presented scheme could realize real-time walkthrough in a large scale P2P-DVE even with high churn of nodes.

关键词： Three-dimensional displays Servers Peer-to-peer computing Availability Solid modeling Internet Virtual environments

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Reverse Engineering Web Applications for Security Mechanism Enhancement

Reverse Engineering Web Applications for Security Mechanism ...

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IEEE Annual computer Software and Applications Conference Workshops (COMPSACW)

作者： Hui Guan Hongji Yang Hossam Hakeem School of Computer Science and Technology Shenyang University of Chemical Technology Shenyang China Center for Creative Computing Bath Spa University England UK Faculty of Computing and Information Technology King Abdulaziz University Jeddah Saudi Arabia

This paper focuses on reverse engineering web application for security mechanisms detection in the current design and thereby presents a security evaluation method for web application taking consideration of potential threats, security features provided by the detected security mechanisms and user's security objectives. Based on our previous work on risk assessment for web applications, evaluation of current security implementation is conducted combining core security structure detection and security knowledge checklist matching. Reverse engineering techniques have been used to extract system models from source code based on which security relevant artefacts are identified and matched with built security artefacts base. The paper describes the general structure of the proposed method.

关键词： Encryption Authentication Access control Software Reverse engineering

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Wire length of midimew-connected mesh network

Wire length of midimew-connected mesh network

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11th IFIP WG 10.3 International Conference on Network and Parallel computing, NPC 2014

作者： Awal, Md. Rabiul Rahman, M. M. Hafizur Nor, Rizal Mohd Sembok, Tengku Mohd Bin Tengku Miura, Yasuyuki Inoguchi, Yasushi Department of Computer Science KICT IIUM Jalan Gombak Kuala Lumpur 50728 Malaysia Cyber Security Center National Defense University Malaysia Kuala Lumpur 57000 Malaysia Graduate School of Technology Shonan Institute of Technology 1-1-25 Tsujido Nishikaigan Fujisawa Kanagawa Japan Research Center for Advanced Computing Infrastructure JAIST Nomi-Shi Ishikawa 923-1292 Japan

ISBN: (纸本)9783662449165

Midimew connected Mesh Network (MMN) is a Minimal DIstance MEsh with Wrap-around links (midimew) network. In this paper, we present the architecture of MMN and evaluate the total wire length of MMN, TESH, mesh, and torus networks. It is shown that the proposed MMN possesses simple structure and moderate wire length. The total wire length of MMN is slightly higher than that of mesh network and lower than that of 2-D torus network. Overall performance suggests that, MMN is an optimal network among these networks. © 2014 IFIP International Federation for Information Processing.

关键词： Interconnection networks (circuit switching)

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11th German Conference on Chemoinformatics (GCC 2015) Abstracts

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JOURNAL OF CHEMINFORMATICS 2016年第SUPPL 1期8卷 1-27页

作者： [Anonymous] GDCh-CIC Division Associated Board Member Beilstein-Institut zur Förderung der Chemischen Wissenschaften Trakehner Str. 7-9 60487 Frankfurt Germany. ufechner@beilstein-institut.de. Division Medicinal Chemistry Amsterdam Institute for Molecules Medicines and Systems (AIMMS) VU University Amsterdam The Netherlands. Centre for Bioinformatics Uni Hamburg Bundesstr. 43 20146 Hamburg Germany. Sanofi-Aventis Deutschland GmbH 65926 Frankfurt am Main Germany. stefan.guessregen@***. Sanofi-Aventis Deutschland GmbH 65926 Frankfurt am Main Germany. GlaxoSmithKline Stevenage SG1 2NY UK. nicola.j.richmond@***. Discngine Paris 75011 France. Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Germany. marwin.segler@wwu.de. Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Germany. Bundeskriminalamt Wiesbaden Central Analytics II 65173 Wiesbaden Germany. Department of Chemistry and Biochemistry University of California Santa Barbara CA 93111 USA. shea@chem.ucsb.edu. Department of Chemistry and Biochemistry University of California Santa Barbara CA 93111 USA. Chemistry Department Ludwig-Maximilians-Universität München Butenandtstr. 7 81377 Munich Germany. Inorganic Chemistry and Center for Nanointegration University of Duisburg-Essen Essen Germany. CAM-D Technologies Essen Germany. Institute for Bioinformatics and Chemoinformatics Westphalian University of Applied Sciences Recklinghausen Germany. Institute for Bioinformatics and Chemoinformatics Westphalian University of Applied Sciences Recklinghausen Germany. achim.zielesny@w-hs.de. Leiden University Leiden Netherlands. j.fraaije@chem.leidenuniv.nl. Culgi BV Berlin Germany. Physikalische Chemie III TU Dortmund 44227 Dortmund Germany. stefan.kast@tu-dortmund.de. Centre for Molecular Informatics Department of Chemistry University of Cambridge Lensfield Road Cambridge CB2 1EW United Kingdom. kcb27@cam.ac.uk. Centre for Molecular Informatics Department of Chemistry

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Workshops held at the ninth annual AAAI conference on artificial intelligence and interactive digital entertainment (AIIDE): A report

Workshops held at the ninth annual AAAI conference on artifi...

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作者： Liapis, Antonios Cook, Michael Smith, Adam M. Smith, Gillian Zook, Alexander Cavazza, Marc Si, Mei Pasquier, Philippe Center for Computer Games Research IT University of Copenhagen Denmark Computational Creativity Group Goldsmiths College London United Kingdom University of Washington United States College of Computer and Information Science and the College of Arts Media and Design Northeastern University United States School of Interactive Computing Georgia Institute of Technology United States Teesside University United States Rensselaer Polytechnic Institute United States School of Interactive Arts and Technology Simon Fraser University Canada

The Ninth Annual AAAI Conference on Artificial Intelligence and Interactive Digital Entertainment (AIIDE) was held October 14-18, 2013, at Northeastern University in Boston, Massachusetts. Workshops were held on the two days prior to the start of the main conference, giving attendees a chance to hold indepth discussions on topics that complement the themes of the main conference program. This year the workshops included the First Workshop on AI and Game Aesthetics (1 day), the Second Workshop on AI in the Game Design Process (1 day), the Second International Workshop on Musical Metacreation (2 day), and the Sixth Workshop on Intelligent Narrative Technologies (2 day). Copyright © 2014, Association for the Advancement of Artificial Intelligence. All rights reserved.

关键词： Artificial intelligence

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SSD lifespan-oriented cache optimization in SSD/HDD hybrid storage system

SSD lifespan-oriented cache optimization in SSD/HDD hybrid s...

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2014 International Conference on Environmental Engineering and computer Application (ICEECA 2014)

作者： X.Wang Q.X.Zhang Y.A.Tan J.Q.Qu Beijing Engineering Research Center of Massive Language Information Processing and Cloud Computing Application School of Computer Science and Technology Beijing Institute of Technology Shanghai Radio Equipment Research Institute

Layered SSD/HDD hybrid storage system has been widely used. However, most traditional designs are performance oriented, and not optimized for SSD lifespan. In this paper, SSD lifespan oriented layered model and cache algorithm are proposed. To decrease SSD wear rate, HDD-RAM switch tunnel is appended to the traditional layered hybrid structure. Cache window size is considered in cache algorithm to filter data, avoiding unnecessary cache cost. Results show optimized designs significantly reduced erase times on SSD, and slightly influenced original performance.

关键词： SSD lifespan-oriented cache optimization in SSD/HDD hybrid storage system HDD RAM cache

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Using Kuliback-Leibler divergence to model opponents in poker 28

Using Kuliback-Leibler divergence to model opponents in poke...

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28th AAAI Conference on Artificial Intelligence, AAAI 2014

作者： Zhang, Jiajia Wang, Xuan Yao, Lin Li, Jingpeng Shen, Xuedong Intelligence Computing Research Center Harbin Institute of Technology Shenzhen Applied Technology Engineering Laboratory for Internet Multimedia Application China Intelligence Computing Research Center Harbin Institute of Technology Public Service Platform of Mobile Internet Application Security Industry China School of Electronics Engineering and Computer Science Peking University China C302 HIT Campus Shenzhen University Town NanShan District XiLi Shenzhen518055 China IER Building Soutn Area Shenzhen High-Tech Industrial Park Shenzhen518055 China

ISBN: (纸本)9781577356653

Opponent modeling is an essential approach for building competitive computer agents in imperfect information games. This paper presents a novel approach to develop opp onent modeling techniques. The approach applies neural networks which are separately trained on different datasct to build K- model clustering opponent models. KullbackL eibler (KL) divergence is used to exploit a safety mode on opponent modeling. Given a parameter d that controls the max divergence between a model's centre point and the units belong to it, the approach is proved to provide a lower bound of expected payoff which is above the minimax payo ff for correctly clustered players. Even for the players that are incorrectly clustered, the lower bound can also be unlimi ted approximated with sufficient history data, In our experi ments, agent with the novel model shows an improved class ification efficiency of opponent modeling comparing with relative researches. And also, the new agent performs better when playing against poker agent HITSZ-CS-13 which participate Annual computer Poker Competition of 2013. © Copyright 2014. Association for the Advancement of Artificial Intelligence (***). All rights reserved.

关键词： computer games

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