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19th international conference on Advances in Multimedia Modeling, MMM 2013

作者： Cheng, Zhiyong Ren, Jing Shen, Jialie Miao, Haiyan School of Information Systems Singapore Management University Singapore Institute of High Performance Computing ÁSTAR Singapore

ISBN: (纸本)9783642357275

Studying and analyzing system performance is one of the fundamental factors for the related technological advancement in image retrieval. In this paper, we report the construction of a large scale test collection for facilitating robust performance evaluation of mobile landmark image search. Totally, the test collection consists of (1) 355,141 images about 128 landmarks in five cities over 3 continents from Flickr;(2) different kinds of textual features for each image, including surrounding text (e.g. tags), contextual data (e.g. geo-location and upload time), and metadata (e.g. uploader and EXIF);and (3) six types of low-level visual features. For the task of landmark image retrieval evaluation, we also conduct a series of baseline experimental studies on the search performance over different visual queries, which represent different views of a landmark. © Springer-Verlag 2013.

关键词： Image retrieval

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Lecture Notes in computer science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics): Preface

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Lecture Notes in computer science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2013年 7830 LNCS卷 V-VI页

作者： Doerr, Joerg Opdahl, Andreas L. Fraunhofer IESE Information Systems Division Fraunhofer-Platz 1 67663 Kaiserslautern Germany University of Bergen Department of Information Science and Media Studies Fosswinckelsgate 7 5020 Bergen Norway

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Targeting different abstraction layers by model-based design methods for embedded systems: A case study

Targeting different abstraction layers by model-based design...

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IEEE international conference on Embedded and Real-Time Computing systems and Applications (RTCSA)

作者： Omair Rafique Manuel Gesell Klaus Schneider Department of Computer Science University of Kaiserslautern Kaiserslautern Germany

In this paper, we show how code can be generated at different levels of abstraction from a single source description. To this end, we use a model-driven development tool called Averest that is based on a synchronous programming language. We illustrate our approach by means of a case study from the domain of distributed real-time automotive embedded systems. this paper focuses thereby mainly on the use of the Averest toolkit to generate code at different levels of abstraction.

关键词： Mathematical model Unified modeling language Switches Pulse width modulation Hardware Embedded systems

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A lightweight fingerprint recognition mechanism of user identification in real-name social networks

A lightweight fingerprint recognition mechanism of user iden...

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19th international conference on Advances in Multimedia Modeling, MMM 2013

作者： Cai, Haibin Qin, Zishan Su, Yunyun Tu, Junnan Jiang, Linhua Shanghai Key Laboratory of Trustworthy Computing East China Normal University Shanghai 200062 China State Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong University Beijing 130012 China

ISBN: (纸本)9783642357275

Today, the popularity of social networks poses a great threat to user's information, thus the work of security and privacy protection is becoming increasingly important and urgent. this paper aims to explore the problem of user identification based on biometrics methods in security and privacy issues for social networks sites. In this paper, we propose a lightweight fingerprint recognition mechanism of user identification in real-name social networks. We describe the architecture by using block diagram of our proposed lightweight fingerprint recognition system, and explain how the important steps of proposed mechanism such as minutiae detection, lightweight operation and minutiae matching are implemented. We have performed the experiments to evaluate the user identification reliability of the proposed mechanism. the results of the experiments show that the performance of our lightweight fingerprint recognition system is realistic. © Springer-Verlag 2013.

关键词： Network security

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Long-distance resolution: Proof generation and strategy extraction in search-based QBF solving

Long-distance resolution: Proof generation and strategy extr...

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19th international conference on Logic for Programming, Artificial Intelligence, and Reasoning, LPAR 2013

作者： Egly, Uwe Lonsing, Florian Widl, Magdalena Institute of Information Systems Vienna University of Technology Austria

ISBN: (纸本)9783642452208

Strategies (and certificates) for quantified Boolean formulas (QBFs) are of high practical relevance as they facilitate the verification of results returned by QBF solvers and the generation of solutions to problems formulated as QBFs. State of the art approaches to obtain strategies require traversing a Q-resolution proof of a QBF, which for many real-life instances is too large to handle. In this work, we consider the long-distance Q-resolution (LDQ) calculus, which allows particular tautological resolvents. We show that for a family of QBFs using the LDQ-resolution allows for exponentially shorter proofs compared to Q-resolution. We further show that an approach to strategy extraction originally presented for Q-resolution proofs can also be applied to LDQ-resolution proofs. As a practical application, we consider search-based QBF solvers which are able to learn tauto-logical clauses based on resolution and the conflict-driven clause learning method. We prove that the resolution proofs produced by these solvers correspond to proofs in the LDQ calculus and can therefore be used as input for strategy extraction algorithms. Experimental results illustrate the potential of the LDQ calculus in search-based QBF solving. © Springer-Verlag 2013.

关键词： Extraction

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A space-based wear leveling for PCM-based embedded systems

A space-based wear leveling for PCM-based embedded systems

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IEEE international conference on Embedded and Real-Time Computing systems and Applications (RTCSA)

作者： Linbo Long Dou Liu Jingtong Hu Shouzhen Gu Qingfeng Zhuge Edwin H.-M. Sha College of Computer Science Chongqing University Chongqing China Department of Computer Science University of Texas at Dallas Richardson Texas USA

Phase change memory (PCM) has emerged as a promising candidate to replace DRAM in embedded systems. However, it can only sustain a limited number of write operations. To solve this issue, this paper proposes a novel and effective wear-leveling technique in software level to prolong the lifetime of PCM-based embedded systems. A polynomial-time algorithm, Multi-Space Wear Leveling Algorithm (MWL), is proposed to achieve effective wear-leveling. the experimental results show our technique can greatly extend the lifetime of PCM-based embedded systems compared with the previous work. Compared with the method without adopting wear-leveling, it introduces no more than 0.7% extra writes and 0.6% running overhead.

关键词： Phase change memory Software Resource management Software algorithms Acceleration Benchmark testing

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Prototyping and evaluation of a network-aware Job Management System on a cluster system

Prototyping and evaluation of a network-aware Job Management...

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IEEE international conference on Networks

作者： Yasuhiro Watashiba Yoshiyuki Kido Susumu Date Hirotake Abe Kohei Ichikawa Hiroaki Yamanaka Eiji Kawai Haruo Takemura Osaka University Japan University of Tsukuba Japan Nara Institute of Science and Technology Japan National Institute of Information and Communications Technology (NICT) Japan

Network performance in high-performance computing environments such as supercomputers and Grid systems takes a role of great importance in deciding the overall performance of computation. However, most Job Management systems (JMSs) available today, which are responsible for managing multiple computing resources for distribution and balancing of a computational workload, do not consider network awareness for resource management and allocation. In this paper, the authors briefly overview our proposed and prototyped network-aware JMS that can allocate an appropriate set of computing and network resources to a job request. Also, we evaluate the usefulness and effectiveness of our proposal. Experiments conducted with the prototype implementation imply that our proposed network-aware JMS could reduce job execution time by 23.4 percent.

关键词： Resource management control systems Prototypes computer architecture Bandwidth Databases Electronic mail

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Distributed contention based MAC protocol for cognitive radio networks with QoS provisioning

Distributed contention based MAC protocol for cognitive radi...

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IEEE international conference on Networks

作者： Mishra Vishram Lau Chiew Tong Chan Syin School of Computer Engineering Nanyang Technological University Singapore

In this paper we propose a medium access control protocol for single-hop cognitive radio network which distributes the contention for channel access onto respective channel instead of common control channel. the design utilizes rendezvous channel as a media for distributing information about the nodes and channels in the network. the distribution of contention on different channels mitigate the harmful effects of control channel saturation. the proposed protocol also caters the quality of service need for different applications by prioritizing packets accordingly. Simulation is done to evaluate the performance of the proposed protocol.

关键词： Real-time systems Sensors throughput Cognitive radio Quality of service Data transfer Receivers

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BBQ: A straightforward queuing scheme to reduce HoL-blocking in high-performance hybrid networks

BBQ: A straightforward queuing scheme to reduce HoL-blocking...

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19th international conference on Parallel Processing, Euro-Par 2013

作者： Yebenes Segura, Pedro Escudero-Sahuquillo, Jesus Gomez Requena, Crispin Garcia, Pedro Javier Quiles, Francisco J. Duato, Jose Dept. of Computing Systems University of Castilla-La Mancha Spain Dept. of Computer Engineering Universitat Politècnica de València Spain

ISBN: (纸本)9783642400469

Head-of-Line (HoL) blocking is a well-known phenomenon that may dramatically degrade the performance of the modern high-performance interconnection networks. Many techniques have been proposed to solve this problem, most of them based on separating traffic flows into different queues at switch ports. However, the efficiency of these proposals may vary depending on the network topology or routing algorithm, as many of them are not aware of any specific network configuration. By contrast, other schemes are tailored to specific topologies like fat-trees, achieving a greater efficiency than "topology-agnostic" schemes. In this paper we propose a straightforward queuing scheme intended to be used in an efficient, recently-proposed hybrid topology. Our proposal significantly boosts network performance with respect to other queuing schemes while requiring similar or fewer resources. Moreover, the implementation of this scheme in InfiniBand-based networks is elementary thanks to the mapping of Service-Levels to Virtual-Lanes supported by this specification. © 2013 Springer-Verlag.

关键词： Topology

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Combining visual and textual systems within the context of user feedback

Combining visual and textual systems within the context of u...

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19th international conference on Advances in Multimedia Modeling, MMM 2013

作者： Kaliciak, Leszek Song, Dawei Wiratunga, Nirmalie Pan, Jeff Robert Gordon University Aberdeen United Kingdom Open University Milton Keynes United Kingdom Aberdeen University Aberdeen United Kingdom

ISBN: (纸本)9783642357244

It has been proven experimentally, that a combination of textual and visual representations can improve the retrieval performance ([20], [23]). It is due to the fact, that the textual and visual feature spaces often represent complementary yet correlated aspects of the same image, thus forming a composite system. In this paper, we present a model for the combination of visual and textual sub-systems within the user feedback context. the model was inspired by the measurement utilized in quantum mechanics (QM) and the tensor product of co-occurrence (density) matrices, which represents a density matrix of the composite system in QM. It provides a sound and natural framework to seamlessly integrate multiple feature spaces by considering them as a composite system, as well as a new way of measuring the relevance of an image with respect to a context. the proposed approach takes into account both intra (via co-occurrence matrices) and inter (via tensor operator) relationships between features' dimensions. It is also computationally cheap and scalable to large data collections. We test our approach on ImageCLEF2007photo data collection and present interesting findings. © Springer-Verlag 2013.

关键词： Quantum theory

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