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2012 Sixth International Conference on Innovative Mobile and Internet Services in Ubiquitous Computing最新文献

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Passive YouTube QoE Monitoring for ISPs isp被动监控YouTube QoE
R. Schatz, T. Hossfeld, P. Casas
Over the last decade, Quality of Experience (QoE) has become the guiding paradigm for enabling a more user-centric understanding of quality of communication networks and services. The intensifying competition among ISPs and the exponentially increasing traffic volumes caused by online video platforms like YouTube is forcing service providers to integrate QoE into their corporate DNA. This paper investigates the problem of YouTube QoE monitoring from an access provider's perspective. To this end, we present three novel methods for in-network measurement of the QoE impairment that dominates user perception in the context of HTTP video-streaming: stalling of playback. Our evaluation results show that it is possible to detect application-level stalling events at high accuracy by using network-level passive probing only. However, only the most complex and most accurate approach can be used for QoE prediction due to the non-linear ties inherent in human quality perception.
在过去十年中,体验质量(Quality of Experience, QoE)已经成为一种指导范例,使人们能够更加以用户为中心地理解通信网络和服务的质量。互联网服务提供商之间的竞争日益激烈,YouTube等在线视频平台带来的流量呈指数级增长,迫使服务提供商将QoE整合到他们的企业DNA中。本文从接入提供商的角度研究了YouTube QoE监控问题。为此,我们提出了三种新的方法来测量在HTTP视频流环境中主导用户感知的QoE损伤:播放延迟。我们的评估结果表明,仅使用网络级被动探测就可以高精度地检测应用程序级的停机事件。然而,由于人类质量感知固有的非线性关系,只有最复杂和最准确的方法才能用于QoE预测。
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引用次数: 92
A New Identity-Based Group Signature Scheme Based on Knapsack ECC 一种新的基于背包ECC的身份群签名方案
S. Parvin, Song Han, Z. Rehman, M. A. Faruque, F. Hussain
Elliptic curve cryptography (ECC) is a way to provide security for exchanging keys among communicating parties using the Diffie Hellman key exchange algorithm. This paper presents the ECC implementation for identity-based signature authentication and then applies the knapsack algorithm on ECC for signing a message. The group signature is the concatenation of the identity-based signature with the user's public key. In this paper, we attempt to provide a secure ID-based group signature scheme by using knapsack based ECC.
椭圆曲线密码学(ECC)是一种使用Diffie Hellman密钥交换算法为通信各方之间的密钥交换提供安全性的方法。提出了基于身份签名认证的ECC实现,并在ECC上应用了背包算法对消息进行签名。组签名是基于身份的签名与用户的公钥的连接。在本文中,我们尝试使用基于背包的ECC提供一个安全的基于身份的群签名方案。
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引用次数: 4
Enabling Transparent Communication with Global ID for the Internet of Things 实现物联网全球ID透明通信
S. Jeong, S. Kim, Minkeun Ha, Taehong Kim, Jinyoung Yang, N. Giang, Daeyoung Kim
Enabling the Internet of Things (IoT) requires a global identification system for things to be distinguished from trillions of things and to make them globally accessible from the Internet. Unfortunately, the current Internet architecture using an IP address as both ID and locator (i.e., address) makes it difficult to improve networking solutions for the IoT. To solve this, we newly design novel IoT architecture composed of Things' Identification Service (TIDS) and Things' Profile Service (TPS), enabling things to use both a domain name and a global ID in globally accessing other things in the world. It also exploits existing Domain Name Service (DNS) and Dynamic DNS (DDNS) to trace of mobile thing's changing IP address. In addition to this, we develop Things' Application-level Protocol (TALP) to provide users with transparent access to the things over heterogeneous networks. To show the feasibility, we implement TIDS, TPS, and TALP and construct the test-bed for the proposed IoT architecture. Based on this, we prove the feasibility of the proposed IoT architecture.
实现物联网(IoT)需要一个全球识别系统,将物与数万亿的事物区分开来,并使其能够通过互联网在全球范围内访问。不幸的是,目前使用IP地址作为ID和定位器(即地址)的互联网架构很难改进物联网的网络解决方案。为了解决这个问题,我们全新设计了由物联网识别服务(TIDS)和物联网配置文件服务(TPS)组成的物联网架构,使物联网可以同时使用域名和全局ID来全球访问世界上的其他事物。它还利用现有的域名服务(DNS)和动态DNS (DDNS)来跟踪移动设备的IP地址变化。除此之外,我们还开发了物的应用层协议(TALP),为用户提供对异构网络上的物的透明访问。为了证明可行性,我们实现了TIDS、TPS和TALP,并为提出的物联网架构构建了测试平台。基于此,我们证明了所提出的物联网架构的可行性。
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引用次数: 10
Content-Based Image Retrieval Using Wavelet Spatial-Color and Gabor Normalized Texture in Multi-resolution Database 基于小波空间颜色和Gabor归一化纹理的多分辨率数据库图像检索
Yong-Hwan Lee, Sang-Burm Rhee, Bonam Kim
Image retrieval is one of the most exciting and fastest growing research areas in the field of multimedia technology. This paper proposes a new efficient image retrieval method that applies a weighted combination of color and texture to the wavelet transform, based on spatial-color and second order statistics, respectively. To evaluate the performance of the proposed algorithm, we assess the simulation's performance in terms of average precision and Fscore using several image databases, and perform comparative analysis with existing methods such as MPEG-7. The experimental results show that the proposed approach significantly improves the effectiveness of image retrieval. The proposed descriptor is particularly useful for multi-resolution image search and retrieval.
图像检索是多媒体技术领域中最令人兴奋和发展最快的研究领域之一。本文提出了一种基于空间颜色统计量和二阶统计量的图像检索方法,该方法将颜色和纹理的加权组合应用于小波变换。为了评估所提出算法的性能,我们使用多个图像数据库评估了模拟的平均精度和Fscore性能,并与现有方法(如MPEG-7)进行了比较分析。实验结果表明,该方法显著提高了图像检索的有效性。所提出的描述符对于多分辨率图像的搜索和检索特别有用。
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引用次数: 22
Document Classification through Building Specified N-Gram 通过构建指定N-Gram进行文档分类
Byeongkyu Ko, Dongjin Choi, Chang Choi, Junho Choi, Pankoo Kim
This paper proposed a method to classify textural documents using specified n-gram data set. Human lives in the world where web documents have a great potential and the amount of valuable information has been consistently growing over the year. There is a problem that finding relevant web documents corresponding to what users want is more difficult due to the huge amount of web size. For this reason, many approaches have been suggested to overcome this obstacle. The most important task is classifying textural documents into predefined categories. Over the years, many statistical approaches were introduced though, no one can find perfect solution yet. In this paper, we suggest a method for textural document classification using n-gram model. The n-gram data frequency has a great potential to find similarities between documents. For this reason, we construct our own n-gram data sets from research papers. If an unknown document comes to the system, the system will extract n-grams from the given unknown documents. After this step, n-grams from unknown document and n-grams in previous data sets will be compared by proposed similarity measurement. The precision rate of this method comes to 86%.
提出了一种使用指定n-gram数据集对文本文档进行分类的方法。在人类生活的世界里,网络文档具有巨大的潜力,而且有价值的信息的数量在过去的一年里一直在持续增长。有一个问题是,由于庞大的网络规模,找到与用户想要的相对应的相关网络文档变得更加困难。出于这个原因,已经提出了许多方法来克服这一障碍。最重要的任务是将纹理文档分类到预定义的类别中。多年来,许多统计方法被引入,但没有人能找到完美的解决方案。本文提出了一种基于n-gram模型的文本文档分类方法。n-gram数据频率在查找文档之间的相似性方面具有很大的潜力。出于这个原因,我们从研究论文中构建了自己的n-gram数据集。如果一个未知文档进入系统,系统将从给定的未知文档中提取n个图。在此步骤之后,将未知文档中的n个图与之前数据集中的n个图进行相似性度量比较。该方法的准确率可达86%。
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引用次数: 2
A Privacy Preserving Model for Personal Information in Search Engine 搜索引擎中个人信息的隐私保护模型
Eun-Ae Cho, Kyungroul Lee, Kangbin Yim
In this modern-day society, people get information by using a search engine, and this is a very ordinary part of our lives. When users, however, begin to retrieve some information after their login on the portal sites, the data related to the user and the query information may be sent to the portal server to enhance the users' comfort. Here, the information that the user does not want to expose can be included. So, an invasion of privacy can occur and we have to protect this kind of incident. In this case, if the user hides all the information, the server can not show the customized result for the user, which can influence the advertising revenue. Moreover, there may be a general downward trend in the portal sites field. Thus, in this paper, we propose a user privacy preserving model in a search engine by using a homomorphic encryption algorithm on the user's policy to solve this problem. This can provide information on what the user wants to know with encrypted user information and targeted advertising service from the portal sites.
在这个现代社会,人们通过使用搜索引擎获取信息,这是我们生活中非常普通的一部分。然而,当用户登录门户网站后开始检索某些信息时,可能会将与用户相关的数据和查询信息发送到门户服务器,以增强用户的舒适性。在这里,可以包含用户不想公开的信息。因此,侵犯隐私是可能发生的,我们必须保护这类事件。在这种情况下,如果用户隐藏所有信息,服务器将无法为用户显示定制的结果,从而影响广告收入。此外,门户网站领域可能会出现总体下降趋势。为此,本文提出了一种基于用户策略的同态加密算法的搜索引擎用户隐私保护模型。这可以通过加密的用户信息和门户网站的定向广告服务提供用户想要知道的信息。
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引用次数: 2
Mobile Computer System with User Friendly Environment and Security Protection 具有友好环境和安全保护的移动计算机系统
Chu-Hsing Lin, Jung-Chun Liu, W. Wu, T. You, Ming Liu
In this paper, motion detection with the web cam can determine current conditions around mobile computers, which act accordingly with a variety of response methods. A good balance is achieved between sensitivity of machines and experiences of users. Many practical applications are investigated, and this paper is primarily focused on two main points: user-friendly operations and security. Our system provides dynamic detection features for suspicious objects: photos of suspected thieves are taken, saved, and uploaded to the Internet, and when necessary, warning Short Message Service messages are sent to mobile phone users. Apart from this application, many other applications are feasible, for example, connection of alternative current power cords of laptops can be used to determine whether they are at a risk of being stolen.
在本文中,利用网络摄像头进行运动检测,可以确定移动计算机周围的当前状况,并采用多种响应方法进行相应的动作。在机器的灵敏度和用户的体验之间取得了很好的平衡。本文研究了许多实际应用,主要集中在两个方面:用户友好的操作和安全性。我们的系统提供了对可疑物体的动态检测功能:对可疑窃贼的照片进行拍摄、保存并上传至互联网,必要时向手机用户发送警告短信服务。除了这个应用之外,还有很多其他的应用是可行的,例如,连接笔记本电脑的交流电源线可以用来判断它们是否有被盗的危险。
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引用次数: 0
Random Graph Languages for Distorted and Ambiguous Patterns: Single Layer Model 用于扭曲和模糊模式的随机图语言:单层模型
M. Ogiela, M. Piekarczyk
The work introduces a linguistic based model designed for distorted or ambiguous patterns where a graph based approach is used for structure representation. The knowledge about unevenness is usually created on the basis of finite number of patterns treated as positive samples of unknown language. The IE graphs are used as the base. Single pattern can be represented using deterministic IE graph. Subsequently, the collection of patterns, represented by deterministic graph is transformed into equivalent random graph language. Utilization of the grammatical inference mechanisms gives the possibility to perform this process in automatic way. Using the IE graphs and imposing some simple limitations on graph structures allows to obtain a polynomial complexity of knowledge inference. In the work it is described how to use the proposed model for collecting the knowledge in handwritten signatures recognition and analysis systems. Information about graphemes (solid fragment of handwritten signature) variability is stored in the form of random IE graphs and stochastic ETPL(k) graph grammars. Instead of an ordinary the IE graph, an attributed one is used in order to increase a descriptive power of the proposed schema. The parametrical data embedded in the graph carries some additional semantic information associated with the structure of pattern. The work presents discussion about inference scheme and computational complexity of the proposed linguistic representation scheme. Described methodology can be especially suited for creating the knowledge representation of the handwritten signatures, signs and ideograms (e.g. kanji) in offline recognition systems.
该工作介绍了一种基于语言的模型,用于扭曲或模糊的模式,其中基于图的方法用于结构表示。关于不均匀性的知识通常是建立在有限数量的模式的基础上,这些模式被视为未知语言的正样本。IE图形被用作基础。单一模式可以用确定性IE图表示。然后,将以确定性图表示的模式集合转换为等效的随机图语言。语法推理机制的使用为自动完成这一过程提供了可能。使用IE图并对图结构施加一些简单的限制,可以获得多项式复杂度的知识推理。在工作中,描述了如何使用所提出的模型来收集手写签名识别和分析系统中的知识。关于字素(手写签名的实体片段)可变性的信息以随机IE图和随机ETPL(k)图语法的形式存储。与普通的IE图不同,我们使用了带有属性的IE图,以增强所建议模式的描述能力。嵌入图中的参数数据携带了一些与模式结构相关的附加语义信息。本文讨论了所提出的语言表示方案的推理方案和计算复杂度。所描述的方法特别适合于在离线识别系统中创建手写签名、符号和表意文字(如汉字)的知识表示。
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引用次数: 7
Automatic Bibliometric Analysis of Research Literature in Adult Education 成人教育研究文献的自动计量分析
Yao-Hua Wang, Yuen-Hsien Tseng
Due to the vast volume of publications in nowadays research environment, methods for analyzing, organizing, and accessing information from large databases are in great need. Through appropriate analytic tools, competitive intelligence can be revealed to enhance the organization or individual performance. This article will show how a free software package called CATAR carry on the analysis about the literature of the Adult Education science. Adult Education Quarterly (AEQ) is a scholarly forum of research and theory in adult education. The field of adult education is broad-based and inter disciplinary, during 1990 to 2010 having 672 papers from the ISI Web of Knowledge database was collected. The data analyzed include the distribution of authors' countries, topical clusters, the most cited references, the productivity rankings, and others to provide information for further study. Our analysis scenario also suggests a feasible way of analyzing other similar data for readers interesting in literature mining applications.
在当今的研究环境中,由于出版物数量庞大,对大型数据库中的信息进行分析、组织和获取的方法是非常需要的。通过适当的分析工具,可以揭示竞争情报,以提高组织或个人的绩效。本文将展示一个名为CATAR的免费软件包如何对成人教育科学文献进行分析。成人教育季刊(AEQ)是一个关于成人教育研究和理论的学术论坛。成人教育领域是一个基础广泛和跨学科的领域,在1990年至2010年期间,从ISI Web of Knowledge数据库中收集了672篇论文。分析的数据包括作者所在国家的分布、主题集群、被引用最多的参考文献、生产率排名等,为进一步研究提供信息。我们的分析场景也为对文献挖掘应用感兴趣的读者提供了一种分析其他类似数据的可行方法。
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引用次数: 1
A Service Oriented Analysis Environment for Neuroimaging Studies 面向服务的神经成像研究分析环境
A. Anjum, N. Bessis, R. McClatchey, K. Munir, I. Habib, A. Branson, Jetendr Shamdasani
neuGRID is an EC-funded project driven by the needs of the Alzheimer's disease research community that aims to facilitate the collection and archiving of large amounts of imaging data coupled with a set of generalized services and algorithms. By taking Alzheimer's disease as an exemplar, the neuGRID project has developed a set of generic analysis services and a Grid infrastructure that enables the European neuroscience community to carry out research required for the study of degenerative brain diseases. Using the services and the infrastructure, neuroscientists should be able to more easily identify neurodegenerative disease markers through the analysis of magnetic resonance and other brain imaging. The availability of such image-based disease markers will allow earlier diagnosis and foster the development of new drugs. This paper reports our work on the service oriented analysis environment that has been developed from a study of user requirements and that enables the neuroscience community to conduct and trace analyses for the study of Alzheimer's and other neurodegenerative diseases. We present the salient features, architecture and implementation details of the services that will form an analysis environment. We also describe the functionality and benefits that these services will offer to the medical community in general and neuroimaging analysis in particular.
neuGRID是一个由欧洲委员会资助的项目,由阿尔茨海默病研究界的需求驱动,旨在促进大量成像数据的收集和存档,并结合一套通用服务和算法。通过以阿尔茨海默病为例,neuGRID项目开发了一套通用分析服务和网格基础设施,使欧洲神经科学界能够开展退化性脑疾病研究所需的研究。利用这些服务和基础设施,神经科学家应该能够通过核磁共振和其他脑成像分析更容易地识别神经退行性疾病标志物。这种基于图像的疾病标记物的可用性将允许早期诊断并促进新药的开发。本文报告了我们在面向服务的分析环境方面的工作,该环境是从对用户需求的研究中开发出来的,它使神经科学界能够对阿尔茨海默氏症和其他神经退行性疾病的研究进行和跟踪分析。我们介绍了将构成分析环境的服务的显著特性、体系结构和实现细节。我们还描述了这些服务将提供给医学界的功能和好处,特别是神经影像学分析。
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引用次数: 1
期刊
2012 Sixth International Conference on Innovative Mobile and Internet Services in Ubiquitous Computing
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