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IEEE 13th international conference on Data Mining (ICDM)

作者： Su, Sen Cheng, Xiang Gao, Lixin Yin, Jiangtao Beijing Univ Posts & Telecommun State Key Lab Networking & Switching Technol Beijing Peoples R China Univ Massachusetts Dept Elect & Comp Engn Amherst MA 01003 USA

Co-clustering is a powerful data mining tool for co-occurrence and dyadic data. As data sets become increasingly large, the scalability of co-clustering becomes more and more important. In this paper, we propose two approaches to parallelize co-clustering with sequential updates in a distributed environment. Based on these two approaches, we present a new distributed framework, Co-ClusterD, that supports efficient implementations of co-clustering algorithms with sequential updates. We design and implement Co-ClusterD, and show its efficiency through two co-clustering algorithms: fast non-negative matrix tri-factorization (FNMTF) and information theoretic co-clustering (ITCC). We evaluate our framework on both a local cluster of machines and the Amazon EC2 cloud. Our evaluation shows that co-clustering algorithms implemented in Co-ClusterD can achieve better results and run faster than their traditional concurrent counterparts.

关键词： Co-Clustering Concurrent Updates Sequential Updates Cloud computing distributed Framework

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Shaping a social software for a distributed military organisation 13

Shaping a social software for a distributed military organis...

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13th international conference on Knowledge Management and Knowledge Technologies, i-KNOW 2013

作者： Bülow, Christina Metscher, Johannes Schnurr, Jan-Mathis Koch, Michael Bundeswehr University Munich Werner-Heisenberg-Weg 39 D-85577 Neubiberg Germany

ISBN: (纸本)9781450323000

While the deployment of social software has become widespread in private enterprises in the past years, the usage in military institutions is not common practice yet. this paper documents the implementation and usage of a social networking service in the medical service of the German armed forces - the San-Netz. the case study documents the whole process from a user needs analysis, which took place in two waves of interviews in 2011 and 2012, to conceptualization, development and rollout of the social networking service. Analysis shows several challenges for platform adoption, which stem from the socio-technical context. the paper details possible solutions for these challenges. One proposed solution that is discussed in details is the employment of use-case-centred documentation. © 2013 ACM.

关键词： Social software

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Foreword to special issue

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Journal of Interconnection Networks 2013年第3期14卷 1302001-1302001页

作者： Shen, Hong Sang, Yingpeng Li, Yidong School of Computer Science University of Adelaide Australia School of Computer and Information Science Beijing Jiaotong University China School of Computer and Information Technology Beijing Jiaotong University China

Parallel and distributed computing has been under many years of development, having played a central role in shaping different research and application trends such as grid computing, cloud computing, green computing, etc. the broad applications of parallel and distributed computing have also made the relevant research field interdisciplinary, cross boundaries among architectures, communications, computing, algorithms and programming. the objective of this special issue is to address some recent developments in this interdisciplinary area. the special issue is based on the presentations made at the 13th international conference on Parallel and distributed computing, Applications and Technologies (PDCAT 2012) held in Beijing, 14-16 December 2012.

关键词： Grid computing Cloud computing distributed computing algorithms Parallel Lines international conference

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Mobile-to-mobile video recommendation 9th

Mobile-to-mobile video recommendation

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9th international conference on Mobile and Ubiquitous Systems: computing, networking and Services, MobiQuitous 2012

作者： Seshadri, Padmanabha Venkatagiri Chan, Mun Choon Ooi, Wei Tsang National University of Singapore Computing 1 13 Computing Drive 117417 Singapore

ISBN: (纸本)9783642402371

Mobile device users can now easily capture and socially share video clips in a timely manner by uploading them wirelessly to a server. When attending crowded events, however, timely sharing of videos becomes difficult due to choking bandwidth in the network infrastructure, preventing like-minded attendees from easily sharing videos with each other through a server. One solution to alleviate this problem is to use direct device-to-device communication to share videos among nearby attendees. Contact capacity between two devices, however, is limited, and thus a recommendation algorithm is needed to select and transmit only videos of potential interest to an attendee. In this paper, we address the question: which video clip should be transmitted to which user. We proposed an video transmission scheduling algorithm, called CoFiGel, that runs in a distributed manner and aims to improve both the prediction coverage and precision of the recommendation algorithm. At each device, CoFiGel transmits the video that would increase the estimated number of positive user-video ratings the most if this video is transferred to the destination device. We evaluated CoFiGel using real-world traces and show that substantial improvement can be achieved compared to baseline schemes that do not consider rating or contact history. © Institute for Computer Sciences, Social Informatics and Telecommunications Engineering 2013.

关键词： Mobile telecommunication systems

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A message from the conference chair

A message from the conference chair

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13th ACIS international conference on Software Engineering, Artificial Intelligence, networking, and Parallel/distributed computing, SNPD 2012

作者： Hochin, Teruhisa Lee, Roger

ISBN: (纸本)9780769547619

the 13th international conference on Software Engineering, Artificial Intelligence, networking, and Parallel/distributed computing (SNPD 2012) is being held in Kyoto, Japan. the conference is sponsored by the international Association for Computer and Information Science (ACIS), in cooperation with Kyoto Institute of Technology, and international Institute of Applied Informatics (IIAI). this conference brings together researchers and practitioners from academia, industry, and government to exchange their research ideas and results and to discuss the state of the art in the areas of the conference. In this conference, we have keynote addresses by Dr. Morshed Chowdhury and Dr. Noriyoshi Sano. © 2012 IEEE.

关键词： Software engineering

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Virtual tree: A robust overlay network for ensuring interval valid queries in dynamic distributed systems

Virtual tree: A robust overlay network for ensuring interval...

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13th international conference on distributed computing and networking, icdcn 2012

作者： Baldoni, Roberto Bonomi, Silvia Cerocchi, Adriano Querzoni, Leonardo Sapienza Università di Roma Via Ariosto 25 00185 Roma Italy

ISBN: (纸本)9783642259586

Today's large scale distributed systems are characterized by strong dynamics caused by the inherent unreliability of their constituting elements (e.g. process and link failures, processes joining or leaving the system). this continuous dynamism has a strong negative impact on distributed algorithms designed to work on such systems. Regular registers [1], Replication [2], in-network aggregation[3], are all examples of such problem. © 2012 Springer-Verlag.

关键词： Overlay networks

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Cryptanalysis of a certificateless multi-proxy signature scheme (short paper)

Cryptanalysis of a certificateless multi-proxy signature sch...

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13th international conference on distributed computing and networking, icdcn 2012

作者： Zhang, Lei Software Engineering Institute East China Normal University Shanghai China

ISBN: (纸本)9783642259586

Proxy signatures allow a proxy signer to sign messages on behalf of an original signer within a given context. they are widely used in distributed systems, grid computing, mobile agent applications, distributed shared object systems, global distribution networks, and mobile communications. Multi-proxy signature is a variation of the proxy signature primitive. In such a scheme, an original signer delegates his signing power to a group of proxy signers, and then only the cooperation of all the proxy signers can generate valid proxy signatures, referred to as multi-proxy signatures, on behalf of the original signer. Recently, a multi-proxy signature scheme is presented in certificateless public key cryptosystem. We show this scheme is insecure. © 2012 Springer-Verlag.

关键词： Grid computing

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Parallel implementation of apriori algorithm based on MapReduce

Parallel implementation of apriori algorithm based on MapRed...

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13th ACIS international conference on Software Engineering, Artificial Intelligence, networking, and Parallel/distributed computing, SNPD 2012

作者： Li, Ning Zeng, Li He, Qing Shi, Zhongzhi Key Laboratory of Intelligent Information Processing Institute of Computing Technology Chinese Academy of Sciences Beijing 100190 China Graduate University Chinese Academy of Sciences Beijing 100139 China Key Lab. of Machine Learning and Computational Intelligence College of Mathematics and Computer Science Hebei University Baoding 071002 Hebei China

ISBN: (纸本)9780769547619

Searching frequent patterns in transactional databases is considered as one of the most important data mining problems and Apriori is one of the typical algorithms for this task. Developing fast and efficient algorithms that can handle large volumes of data becomes a challenging task due to the large databases. In this paper, we implement a parallel Apriori algorithm based on MapReduce, which is a framework for processing huge datasets on certain kinds of distributable problems using a large number of computers (nodes). the experimental results demonstrate that the proposed algorithm can scale well and efficiently process large datasets on commodity hardware. © 2012 IEEE.

关键词： MapReduce

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Application Utility-based Bandwidth Allocation Scheme for Data Center Networks

Application Utility-based Bandwidth Allocation Scheme for Da...

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13th international conference on Parallel and distributed computing, Applications, and Technologies (PDCAT)

作者： Li, Yangyang Wang, Hongbo Dong, Jiankang Cheng, Shiduan Beijing Univ Posts & Telecommun State Key Lab Networking & Switching Technol Beijing 100876 Peoples R China

ISBN: (纸本)9780769548791

the key infrastructure of Cloud computing is data center which is shared by many tenants. Each tenant's application competes for acquiring more network bandwidth in order to maximize its utility. However, this may cause interference among these diverse applications. Malicious competition not only degrades its performance, but also makes the overall performance of the data center poor and ineffective. To ensure the Quality of Services (QoS) and achieve high network utilization, in this paper, we propose a bandwidth allocation scheme for data center networks (DCNs), which is based on an application utility-based model. In our scheme, multi-path feature of DCN is leveraged to improve the network utilization, and utility functions are constructed to differentiate the throughput and delay sensibilities of different applications. Moreover, our scheme is suitable for arbitrary DCN topologies and without modification on current hardware. the numerical simulation shows that our scheme can provide bandwidth guarantee, fine-grained service differentiation and achieve high network utilization.

关键词： Cloud computing Data Center Networks Application Utility Bandwidth Allocation

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A novel online event analysis framework for micro-blog based on incremental topic modeling

A novel online event analysis framework for micro-blog based...

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13th ACIS international conference on Software Engineering, Artificial Intelligence, networking, and Parallel/distributed computing, SNPD 2012

作者： Ma, Huifang Wang, Bo Li, Ning Department of Computer Science Northwest Normal University Lanzhou Gansu 730070 China Department of Military Information Management Shanghai Branch PLA Nanjing Institute of Politics Shanghai 200433 China Key Laboratory of Intelligent Information Processing Institute of Computing Technology Chinese Academy of Sciences 100190 Beijing China

ISBN: (纸本)9780769547619

In this paper, we present a scalable implementation of a topic modeling (Adaptive Link-IPLSA) based method for online event analysis, which summarize the gist of massive amount of changing tweets and enable users to explore the temporal trends in topics. this model also can simultaneously maintain the continuity of the latent semantics to better capture the time line development of events. With the help of this model, users can quickly grasp major topics in these twitters. the preliminary results show that our method leads to more balanced and comprehensive improvement for online event detection compared to benchmark approaches. Additionally our algorithm is computationally feasible in near real-time scenarios making it an attractive alternative for capturing the rapidly changing dynamics of microblogs. © 2012 IEEE.

关键词： Semantics

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