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2009 Fourth International Conference on Digital Information Management最新文献

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Motivations for media sharing among mobile phone users 手机用户媒体分享的动机
Pub Date : 2009-12-18 DOI: 10.1109/ICDIM.2009.5356782
A. Chua, C. S. Lee, D. Goh, R. Ang
Mobile media sharing has become an increasingly commonly activity. Using a dairy study, we investigated motivations behind mobile media sharing. Participants maintained a month-long diary, documenting their media sharing activities. Post-study interviews were also conducted to elicit additional information. Results suggest a range of motivational factors for media sharing behavior. These include personal and social influences. Participants were also more inclined to share photos than with any other media due to cost and transmission time considerations. Implications of our work are discussed.
移动媒体共享已经成为一种越来越普遍的活动。通过乳制品研究,我们调查了移动媒体分享背后的动机。参与者坚持一个月的日记,记录他们的媒体分享活动。研究结束后的访谈也是为了获得更多的信息。研究结果表明,媒体分享行为有一系列的动机因素。这些因素包括个人和社会影响。由于成本和传播时间的考虑,参与者也更倾向于与其他媒体分享照片。讨论了我们工作的意义。
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引用次数: 4
A topology-aware load balancing algorithm for P2P systems 基于拓扑感知的P2P系统负载均衡算法
Pub Date : 2009-12-18 DOI: 10.1109/ICDIM.2009.5356795
Seyed Iman Mirrezaei, Javad Shahparian, M. Ghodsi
One of the challenges of P2P systems is to perform load balancing efficiently. A distributed hash table (DHT) abstraction, heterogeneous nodes, and non uniform distribution of objects cause load imbalance in structured P2P overlay networks. Several solutions are suggested to solve this problem but they have some restrictions. They assume the homogeneous capabilities of nodes, unawareness of the link latency during transferring load and imposing logical structures to collect and reassign load. This paper presents a distributed load balancing algorithm with topology awareness using the concept of virtual servers. In our proposed approach, each node collects neighborhood load information from physically close nodes and reassigns virtual servers to overlay nodes according to topology of underlying network. Consequently, it provides rapid convergence on load balance and reduces the load transfer cost. Moreover, our parametric algorithm increases the quality of load balancing among close nodes of overlay and also provides a new tradeoff between the quality of load balancing and load transfer cost among all overlay nodes. Our simulations show that our approach reduces the load transfer cost and saves a great network bandwidth.
P2P系统面临的挑战之一是如何有效地进行负载平衡。分布式哈希表(DHT)抽象、异构节点和对象分布不均匀是结构化P2P覆盖网络负载不均衡的主要原因。提出了几种解决方案来解决这个问题,但它们有一些限制。它们假定节点的能力是同构的,在传输负载期间不知道链路延迟,并施加逻辑结构来收集和重新分配负载。本文利用虚拟服务器的概念,提出了一种具有拓扑感知的分布式负载均衡算法。在我们提出的方法中,每个节点从物理上接近的节点收集邻域负载信息,并根据底层网络的拓扑结构将虚拟服务器重新分配给覆盖节点。因此,它提供了快速收敛的负载均衡和降低负载转移成本。此外,我们的参数化算法提高了覆盖节点间负载均衡的质量,并提供了覆盖节点间负载均衡质量与负载转移成本之间的一种新的权衡。仿真结果表明,该方法降低了负载传输成本,节省了大量网络带宽。
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引用次数: 9
Human-computer interface design in an e-Learning system for individuals with cognitive and learning disabilities 认知与学习障碍者电子学习系统之人机介面设计
Pub Date : 2009-12-18 DOI: 10.1109/ICDIM.2009.5356784
Grant D. Fryia, Renata Wachowiak-Smolíkova, M. Wachowiak
As computer systems continue to improve, they also often become larger and more complicated. This may create barriers for individuals with cognitive and learning disabilities, who may find these systems more difficult to use. In this paper, an approach incorporating recent research into interface accessibility for assistive technology is taken to improve the usability of an e-Learning system. By developing a prototype without unnecessary complexities or distractions and by retaining and enhancing those features that are required, this type of e-Learning system can meet the needs of its intended users.
随着计算机系统的不断改进,它们也常常变得更大、更复杂。这可能会对有认知和学习障碍的个人造成障碍,他们可能会发现这些系统更难以使用。在本文中,采用了一种方法,结合了最近对辅助技术界面可访问性的研究,以提高电子学习系统的可用性。通过开发一个没有不必要的复杂性或干扰的原型,通过保留和增强所需的那些功能,这种类型的电子学习系统可以满足其预期用户的需求。
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引用次数: 10
Quantifying the impact of funded research works 量化受资助研究工作的影响
Pub Date : 2009-12-18 DOI: 10.1109/ICDIM.2009.5356778
S. Stamou, Paraskevi Tzekou, Nikos Zotos
A number of scientific publications discuss works that have been financially supported by agencies that invest in research. We refer to those publications as funded research works. In this paper, we try to capture the impact of funded research works, in order to assist funding agencies evaluate their efficacy in identifying the best research efforts. To accomplish our goal, we firstly need a method that automatically identifies publications that correspond to funded research. Our proposed method leverages NLP techniques in order to identify acknowledgments of financial support in the publications' content. Publications containing acknowledgments of financial support are deemed as funded works. Following the identification of funded research articles, we quantify their impact by considering the number of their citations, their freshness as well as the impact of their publication venue. The application of our method to a number of publications reveals that although funded research articles account to nearly 23% of the scientific publications, their average impact is increased compared to the average impact of non-funded publications. Our findings suggest that investments made on research deliver significant results and that funding agencies are effective in judging the potential impact of research efforts.
许多科学出版物讨论了由投资研究的机构资助的工作。我们将这些出版物称为资助研究作品。在本文中,我们试图捕捉资助研究工作的影响,以帮助资助机构评估他们在确定最佳研究工作方面的功效。为了实现我们的目标,我们首先需要一种自动识别与资助研究相对应的出版物的方法。我们提出的方法利用NLP技术来识别出版物内容中对财务支持的确认。包含财政支持致谢的出版物被视为资助作品。在确定资助研究文章之后,我们通过考虑其引用次数,新鲜度以及出版地点的影响来量化其影响力。将我们的方法应用于一些出版物表明,尽管资助的研究文章占科学出版物的近23%,但与非资助出版物的平均影响力相比,它们的平均影响力有所增加。我们的研究结果表明,对研究的投资产生了显著的成果,资助机构在判断研究工作的潜在影响方面是有效的。
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引用次数: 3
Group based access control scheme (GBAC): Keeping information sharing secure in mobile Ad- hoc environment 基于组的访问控制方案(GBAC):保证移动自组织环境下信息共享的安全性
Pub Date : 2009-12-18 DOI: 10.1109/ICDIM.2009.5356797
Asmidar Abu Bakar, Roslan Ismail, A. Ahmad, J. Manan, J. Jais
Mobile ad-hoc network is a network that can dynamically setup on the fly by mobile nodes. Due to its unique characteristics, it is becoming an attractive choice for commercial and also military application and among the used is to support information sharing among mobile nodes. However due to its borderless infrastructure, this network is highly susceptible to adversaries nodes, that illegally able to access information shared in the network. Hence to overcome this problem we proposed a Group Based Access Control scheme, a step by step process or protocol that able to make an access to share information in the network secure. We use emergency rescue mission scenario to illustrate the use of the scheme. The protocol created meets the security properties such as data confidentiality, integrity and also non-repudiation.
移动自组织网络是一种可以由移动节点动态设置的网络。由于其独特的特性,它正成为商业和军事应用的一个有吸引力的选择,其中使用的是支持移动节点之间的信息共享。然而,由于其无边界的基础设施,该网络非常容易受到对手节点的影响,这些节点能够非法访问网络中共享的信息。因此,为了克服这个问题,我们提出了一种基于组的访问控制方案,这是一种循序渐进的过程或协议,能够使网络中共享信息的访问安全。以紧急救援任务场景为例说明该方案的使用。创建的协议满足数据机密性、完整性和不可否认性等安全属性。
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引用次数: 9
P2P applied in CMS for advertising P2P应用于CMS广告
Pub Date : 2009-12-18 DOI: 10.1109/ICDIM.2009.5356799
Oliver Batz, Carsten Kleiner, Arne Koschel
Peer-to-Peer (P2P) networks promise to be a means for secure, reliable and effective data distribution. This paper describes the p2pcds project, which requires such features for a closed distributed advertising system. In this system large multimedia files are to be shared for simultaneous display on a large number of advertising screens. The project delivers a new and improved P2P based approach for a currently available client-server system. p2pcds utilizes P2P networks for a decentral network structure and includes peers for data distribution to get a fast and reliable system. It also establishes multipoint connections via IP-multicast to increase the data transfer rate. Other features include a public-key- infrastructure for secure decentral authentication and a kind of a two-phase commit for concurrent data transfers. Presented are p2pcds concepts and some details about its implementation with Java and JXTA.
点对点(P2P)网络有望成为一种安全、可靠和有效的数据分发手段。本文描述了p2pcds项目,该项目要求封闭的分布式广告系统具有这些特性。在该系统中,需要共享大型多媒体文件,以便在大量广告屏幕上同时显示。该项目为当前可用的客户机-服务器系统提供了一种新的改进的基于P2P的方法。p2pcds利用P2P网络作为分散的网络结构,并包含对等体进行数据分发,以获得快速可靠的系统。它还通过ip多播建立多点连接,以提高数据传输速率。其他特性包括用于安全分散身份验证的公钥基础设施和用于并发数据传输的一种两阶段提交。本文介绍了p2pcds的概念以及使用Java和JXTA实现p2pcds的一些细节。
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引用次数: 0
Google based name search: Resolving mixed entities on the web 基于Google的名称搜索:解决网络上的混合实体
Pub Date : 2009-12-18 DOI: 10.1109/ICDIM.2009.5356763
Byung-Won On, Ingyu Lee
When non-unique values are used as the identifier of entities, due to their homonym, confusion can occur. In particular, when part of “names” of entities are used as their identifiers, the problem is often referred to as a mixed entity resolution problem, where goal is to sort out the erroneous entities due to name homonyms (e.g., if only last name is used as an identifier, one cannot distinguish “Vannevar Bush” from “George Bush”). Especially, a mixed entity resolution problem is common on the Web data. For instance, to search for a product name (e.g., Oracle) in Google, there exist a mixture of web pages due to the name homonyms (e.g., Oracle Database, Oracle Audio, Oracle Academy, etc.). In this paper, we present a practical system for resolving such mixed entities on the Web. For development of such a system, we propose a web service based interface, an unsu-pervised clustering scheme, and cluster ranking algorithms. In particular, since the correct number of clusters is often unknown, we study a state-of-the-art unsupervised clustering solution based on propagation of pairwise similarities of entities. Our claim is empirically validated via experimentation, showing that our approach outperforms main competing solution.
当使用非唯一值作为实体的标识符时,由于它们的同音,可能会出现混淆。特别是,当使用实体的部分“名称”作为其标识符时,该问题通常被称为混合实体解析问题,其目标是将由于名称同音而导致的错误实体分类(例如,如果仅使用姓氏作为标识符,则无法区分“Vannevar Bush”和“George Bush”)。特别是,混合实体解析问题在Web数据上很常见。例如,在Google中搜索一个产品名称(例如,Oracle),由于名称同音,存在混合的网页(例如,Oracle Database, Oracle Audio, Oracle Academy等)。在本文中,我们提出了一个实用的系统来解决Web上的这种混合实体。为了开发这样一个系统,我们提出了一个基于web服务的接口,一个无监督聚类方案和聚类排序算法。特别是,由于正确的聚类数量通常是未知的,我们研究了基于实体成对相似性传播的最先进的无监督聚类解决方案。通过实验验证了我们的主张,表明我们的方法优于主要竞争解决方案。
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引用次数: 3
Power efficient clustering algorithm 节能聚类算法
Pub Date : 2009-12-18 DOI: 10.1109/ICDIM.2009.5356796
Hasan Al-Hamadi, Maytham Safar, Dariush Ebrahimi
A wireless sensor network (WSN) is a form of network that consists of randomly distributed devices/nodes in a known space. In this kind of environment there are two major concerns that governs the efficiency, availability and functionality of the network, namely power consumption and fault tolerance. This paper introduces a new algorithm that is Power Efficient Cluster Algorithm (PECA). The main focus of the proposed algorithm is to reduce the power consumption required to setup the network since it is the stage where power is used the most. This is achieved by reducing the total number of radio transmission required for the network setup. As a fault tolerance approach the algorithm stores some information about each node for easier recovery of the network should any node fails in the network. The proposed algorithm is compared with Self Organizing Sensor (SOS) algorithm; the result shows that PECA consume significantly less power than SOS.
无线传感器网络(WSN)是由在已知空间中随机分布的设备/节点组成的一种网络形式。在这种环境中,有两个主要问题支配着网络的效率、可用性和功能,即功耗和容错性。本文介绍了一种新的算法——功率高效聚类算法(PECA)。该算法的主要重点是减少设置网络所需的功耗,因为这是功耗使用最多的阶段。这是通过减少网络设置所需的无线电传输总数来实现的。作为一种容错方法,该算法存储了每个节点的一些信息,以便在网络中任何节点发生故障时更容易恢复网络。将该算法与自组织传感器(SOS)算法进行了比较;结果表明,PECA的功耗明显低于SOS。
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引用次数: 2
Query operations of process-based searches 基于流程的查询操作
Pub Date : 2009-12-18 DOI: 10.1109/ICDIM.2009.5356786
Yaling Liu, A. Agah
This paper introduces a non-traditional Web search problem, referred to as “process-based search”, and focuses on the query analysis and formulation of this type of search. Traditional information retrieval models were created based on the assumption that one query can be answered by one document. A query needs to properly specify the topic being requested. Recently published work, referred to as subtopic retrieval or aspect retrieval, has relaxed this assumption that a query may contain multiple subtopics and it can be answered by a set of documents, each of which covers one or multiple subtopics. However, the original query was still assumed to explicitly specify the subtopics. Process-based search further relaxes the assumption to facilitate complex Web searches. The subtopics of the query do not have to be explicitly specified, because the user may not be able to do so in the initial search due to the lack of knowledge for the topic. A database of processes is used to discover the subtopics implied by the query. Thus, this type of search is called process-based search. This paper focuses on the algorithms for formulating sub-queries for the process-based search. Experiments on real data sets showed that the needs of process-based searching exist in the real world and the proposed concepts and approaches effectively solve this problem.
本文介绍了一种非传统的Web搜索问题,称为“基于流程的搜索”,并重点研究了这类搜索的查询分析和表述。传统的信息检索模型是基于一个文档可以回答一个查询的假设而创建的。查询需要正确指定所请求的主题。最近发表的工作(称为子主题检索或方面检索)放宽了这样的假设,即查询可以包含多个子主题,并且可以由一组文档回答,每个文档涵盖一个或多个子主题。但是,仍然假设原始查询显式地指定子主题。基于流程的搜索进一步放宽了假设,以方便复杂的Web搜索。查询的子主题不必显式地指定,因为用户在最初的搜索中可能由于缺乏对主题的了解而无法这样做。进程数据库用于发现查询所隐含的子主题。因此,这种类型的搜索称为基于流程的搜索。本文重点研究了基于过程的搜索中子查询的形成算法。在实际数据集上的实验表明,现实世界中存在基于过程的搜索需求,所提出的概念和方法有效地解决了这一问题。
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引用次数: 0
Are SentiWordNet scores suited for multi-domain sentiment classification? SentiWordNet分数适合多领域情感分类吗?
Pub Date : 2009-12-18 DOI: 10.1109/ICDIM.2009.5356764
K. Denecke
Motivated by the numerous applications of analysing opinions in multi-domain scenarios, this paper studies the potential of a still rarely considered approach to the problem of multi-domain sentiment analysis based on Senti-WordNet as lexical resource. SentiWordNet scores are exploited together with additional features to assign a polarity to a text using machine learning. On the other hand, a rule-based approach is studied based on sentiment scores. The introduced methods are tested on single domains of a real-world data set consisting of documents in six different domains, but also in cross-domain settings. The results show that for cross-domain sentiment analysis rule-based approaches with fix opinion lexica are unsuited. For machine-learning based sentiment classification a mixture of documents of different domains achieves good results.
由于观点分析在多领域场景中的大量应用,本文研究了一种基于sentiti - wordnet作为词汇资源的多领域情感分析方法的潜力。SentiWordNet分数与其他功能一起利用机器学习为文本分配极性。另一方面,研究了基于情感得分的基于规则的方法。所介绍的方法在由六个不同域的文档组成的真实数据集的单个域上进行了测试,也在跨域设置中进行了测试。结果表明,对于跨领域情感分析,基于规则的固定意见词典方法是不适合的。对于基于机器学习的情感分类,混合不同领域的文档可以获得很好的结果。
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引用次数: 95
期刊
2009 Fourth International Conference on Digital Information Management
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