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2012 16th Panhellenic Conference on Informatics最新文献

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Privacy and Traceability in Social Networking Sites 社交网站中的隐私和可追溯性
2012 16th Panhellenic Conference on Informatics Pub Date : 2012-10-05 DOI: 10.1109/PCi.2012.57
Efthymios Lalas, Anastasios Papathanasiou, C. Lambrinoudakis
{"title":"Privacy and Traceability in Social Networking Sites","authors":"Efthymios Lalas, Anastasios Papathanasiou, C. Lambrinoudakis","doi":"10.1109/PCi.2012.57","DOIUrl":"https://doi.org/10.1109/PCi.2012.57","url":null,"abstract":"Over the last few years the use of social networking sites has been dramatically increased. However, this extensive growth is not without consequences, identity theft, cyber bullying and child exploitation are only some of the problems that have arisen and are directly connected to privacy violation and trace ability problems that are present in such platforms. This paper proposes an architecture for easing the aforementioned problems and demonstrates it through its implementation in facebook. Furthermore, the main advantages of the proposed approach are discussed in terms of future implementations in other social networking sites.","PeriodicalId":131195,"journal":{"name":"2012 16th Panhellenic Conference on Informatics","volume":"150 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122470116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
A Survey of Transport Protocols for Haptic Applications 触觉应用的传输协议综述
2012 16th Panhellenic Conference on Informatics Pub Date : 2012-10-05 DOI: 10.1109/PCi.2012.54
G. Kokkonis, K. Psannis, M. Roumeliotis, Sotirios Kontogiannis
{"title":"A Survey of Transport Protocols for Haptic Applications","authors":"G. Kokkonis, K. Psannis, M. Roumeliotis, Sotirios Kontogiannis","doi":"10.1109/PCi.2012.54","DOIUrl":"https://doi.org/10.1109/PCi.2012.54","url":null,"abstract":"The term Hap tic refers to the sense of touch. The feeling has the ability to increase the sense of reality, to excite the user and improve the quality of experience. To carry out this sense through the Internet was, until recently, impracticable due to processing inefficiencies and/or protocol performance in capabilities, such as throughput and jitter constraints. This paper describes a Hap tic system architecture. Moreover it presents a survey of transport protocols for hap tic applications. It also performs a classification of related protocol capabilities and outlines the flow requirements that should be met by protocols designed to carry such data.","PeriodicalId":131195,"journal":{"name":"2012 16th Panhellenic Conference on Informatics","volume":"243 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123576152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 16
Multilingual Educational Repositories: Breaking Down the Language Barrier 多语言教育资源库:打破语言障碍
2012 16th Panhellenic Conference on Informatics Pub Date : 2012-10-05 DOI: 10.1109/PCi.2012.77
A. Koutoumanos, V. Protonotarios
{"title":"Multilingual Educational Repositories: Breaking Down the Language Barrier","authors":"A. Koutoumanos, V. Protonotarios","doi":"10.1109/PCi.2012.77","DOIUrl":"https://doi.org/10.1109/PCi.2012.77","url":null,"abstract":"This paper presents a framework for introducing multilingualism into web portals, aiming to facilitate bringing down the language barriers, bridging the language divide between information seekers and the wealth of resources from around the world that are made available through such portals. The main research question addressed is the definition of the problem itself and the description of design affordances that shall allow web portals to meet different linguistic profiles, needs and expectations from users around the globe. The paper describes the methodology used for the analysis of user requirements of the international user base of a thematic web portal aiming to promote discovery of educational resources and concludes with some initial results, discussion of the findings and suggestions for future work.","PeriodicalId":131195,"journal":{"name":"2012 16th Panhellenic Conference on Informatics","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125646818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Implementing Basic Computational Kernels of Linear Algebra on Multicore 在多核上实现线性代数基本计算核
2012 16th Panhellenic Conference on Informatics Pub Date : 2012-10-05 DOI: 10.1109/PCi.2012.23
Panagiotis D. Michailidis, K. Margaritis
{"title":"Implementing Basic Computational Kernels of Linear Algebra on Multicore","authors":"Panagiotis D. Michailidis, K. Margaritis","doi":"10.1109/PCi.2012.23","DOIUrl":"https://doi.org/10.1109/PCi.2012.23","url":null,"abstract":"This paper implements basic computational kernels of the scientific computing such as matrix - vector product, matrix product and Gaussian elimination on multi-core platforms using several parallel programming tools. Specifically, these tools are Pthreads, OpenMP, Intel Cilk++, Intel TBB, Intel ArBB, SMPSs, SWARM and Fast Flow. The aim of this paper is to present an unified quantitative and qualitative study of these tools for parallel computation of scientific computing kernels on multicore. Finally, based on this study we conclude that the Intel ArBB and SWARM parallel programming tools are the most appropriate because these give good performance and simplicity of programming.","PeriodicalId":131195,"journal":{"name":"2012 16th Panhellenic Conference on Informatics","volume":"258 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132799417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Secure Wireless Infrastructures and Mobile Learning for Deaf and Hard-of-Hearing Students 安全无线基础设施和聋哑和听力障碍学生的移动学习
2012 16th Panhellenic Conference on Informatics Pub Date : 2012-10-05 DOI: 10.1109/PCi.2012.66
P. Belsis, S. Gritzalis, C. Marinagi, C. Skourlas, D. Vassis
{"title":"Secure Wireless Infrastructures and Mobile Learning for Deaf and Hard-of-Hearing Students","authors":"P. Belsis, S. Gritzalis, C. Marinagi, C. Skourlas, D. Vassis","doi":"10.1109/PCi.2012.66","DOIUrl":"https://doi.org/10.1109/PCi.2012.66","url":null,"abstract":"In this paper, we discuss how wireless networks and mobile learning form an attractive and helpful framework for supporting Deaf and Hard of Hearing (D-HH) students in Higher Education. The proposed multi-domain framework includes Secure Wireless Infrastructures and Personalized Educational Learning Environments (SWI_PELE). We present the collaboration of such environments and briefly discuss a pilot implementation. The framework includes a scheme of servers and incorporates wireless infrastructure, and personalized, multimedia based educational course material. We also present and discuss how the proposed architecture can support services for D-HH students.","PeriodicalId":131195,"journal":{"name":"2012 16th Panhellenic Conference on Informatics","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127160763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
ROTA: An Archipelago-Wide Area Network for High Speed Communication to Ships 用于船舶高速通信的群岛广域网
2012 16th Panhellenic Conference on Informatics Pub Date : 2012-10-05 DOI: 10.1109/PCI.2012.42
I. Papaefstathiou, E. Sotiriades, S. Apostolakis, A. Dollas, P. Karamolegkos, Marios Logaras, I. Chatzigiannakis, Leonidas Vasilikiotis, M. Emmanouilidou, Stavros Aggelidakis, Petros Hatzidakis
{"title":"ROTA: An Archipelago-Wide Area Network for High Speed Communication to Ships","authors":"I. Papaefstathiou, E. Sotiriades, S. Apostolakis, A. Dollas, P. Karamolegkos, Marios Logaras, I. Chatzigiannakis, Leonidas Vasilikiotis, M. Emmanouilidou, Stavros Aggelidakis, Petros Hatzidakis","doi":"10.1109/PCI.2012.42","DOIUrl":"https://doi.org/10.1109/PCI.2012.42","url":null,"abstract":"The ROTA project is aimed at offering high-speed network connections to ships traveling at archipelagos, i.e. seas with dense clusters of islands, such as the Aegean sea. The ROTA system is based on the use of directional antennas on-board the ships and stationary antennas on the islands. The stationary antennas on the islands are connected to high-speed commercial computer networks, which are available on practically all inhabited islands at the Aegean sea, thus implementing a Virtual Private Network (VPN). This approach is much more cost-effective when compared to current approaches that rely on the usage of satellite communications. This paper presents the concept behind ROTA platform.","PeriodicalId":131195,"journal":{"name":"2012 16th Panhellenic Conference on Informatics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129461910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
TensorSplat: Spotting Latent Anomalies in Time TensorSplat:及时发现潜在的异常
2012 16th Panhellenic Conference on Informatics Pub Date : 2012-10-05 DOI: 10.1109/PCI.2012.60
Danai Koutra, E. Papalexakis, C. Faloutsos
{"title":"TensorSplat: Spotting Latent Anomalies in Time","authors":"Danai Koutra, E. Papalexakis, C. Faloutsos","doi":"10.1109/PCI.2012.60","DOIUrl":"https://doi.org/10.1109/PCI.2012.60","url":null,"abstract":"How can we spot anomalies in large, time-evolving graphs? When we have multi-aspect data, e.g. who published which paper on which conference and on what year, how can we combine this information, in order to obtain good summaries thereof and unravel hidden anomalies and patterns? Such multi-aspect data, including time-evolving graphs, can be successfully modelled using Tensors. In this paper, we show that when we have multiple dimensions in the dataset, then tensor analysis is a powerful and promising tool. Our method TENSORSPLAT, at the heart of which lies the \"PARAFAC\" decomposition method, can give good insights about the large networks that are of interest nowadays, and contributes to spotting micro-clusters, changes and, in general, anomalies. We report extensive experiments on a variety of datasets (co-authorship network, time-evolving DBLP network, computer network and Facebook wall posts) and show how tensors can be proved useful in detecting \"strange\" behaviors.","PeriodicalId":131195,"journal":{"name":"2012 16th Panhellenic Conference on Informatics","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122331572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 52
A Workbench for Extractive Summarizing Methods 一个用于抽取总结方法的工作台
2012 16th Panhellenic Conference on Informatics Pub Date : 2012-10-05 DOI: 10.1109/PCi.2012.67
N. Karanikolas, E. Galiotou, Christodoulos Tsoulloftas
{"title":"A Workbench for Extractive Summarizing Methods","authors":"N. Karanikolas, E. Galiotou, Christodoulos Tsoulloftas","doi":"10.1109/PCi.2012.67","DOIUrl":"https://doi.org/10.1109/PCi.2012.67","url":null,"abstract":"We present a software workbench for testing available/well known methods for text summarization. The software was designed and implemented in order to incorporate alternative proposed methodologies of extractive summarization. Therefore, the provided methods do not aim at understanding and condensing the meanings of an amount of original sentences into a smaller number of sentences not occurring in the original text. It simply extracts a subset of the original sentences which are the most (promising as being) relevant for expressing the meaning of the text. Our purpose is twofold: a) to provide a utility for benchmarking of well known summarization methods to researchers or/and professionals who are interested in implementing summarization products, b) to perform our own evaluations of the well known extractive summarization methods.","PeriodicalId":131195,"journal":{"name":"2012 16th Panhellenic Conference on Informatics","volume":"141 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127970488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
ESL as a Gateway from OpenCL to FPGAs: Basic Ideas and Methodology Evaluation ESL作为从OpenCL到fpga的门户:基本思想和方法评估
2012 16th Panhellenic Conference on Informatics Pub Date : 2012-10-05 DOI: 10.1109/PCi.2012.45
G. Economakos
{"title":"ESL as a Gateway from OpenCL to FPGAs: Basic Ideas and Methodology Evaluation","authors":"G. Economakos","doi":"10.1109/PCi.2012.45","DOIUrl":"https://doi.org/10.1109/PCi.2012.45","url":null,"abstract":"OpenCL has been proposed as an open standard for application development in heterogeneous multi-core architectures, utilizing different CPU, DSP and GPU types and configurations. Recently, the technological advances in FPGA devices, offering hundreds of GFLOPs with maximum power efficiency, has turned the parallel processing community towards them. However, FPGA programming requires expertise in a different field as well as the appropriate tools and methodologies. A promising solution, gaining wider acceptance lately, is the use of ESL and high-level synthesis methodologies, supporting C/C++ based hardware design. Starting from high-level synthesis, this paper presents a methodology for the adoption of OpenCL as an FPGA programming environment. Specifically, the opportunities as well as the obstacles imposed to the application developer by the FPGA computing platform and the use of C/C++ as input language are presented, and a systematic way to explore both data level and thread level parallelism is given. Experimental result show that efficient design space exploration is supported, with overall system level performance boost of up to 9x, compared to equivalent GPU implementations.","PeriodicalId":131195,"journal":{"name":"2012 16th Panhellenic Conference on Informatics","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121433064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Towards Privacy-Aware Target Advertising 面向有隐私意识的目标广告
2012 16th Panhellenic Conference on Informatics Pub Date : 2012-10-05 DOI: 10.1109/PCi.2012.30
Aristidis P. Athanasiou, Charalampos N. Raftopoulos, Eleftherios D. Thanos, Georgios V. Kritharellis, N. Tselikas, I. E. Foukarakis, A. Boucouvalas
{"title":"Towards Privacy-Aware Target Advertising","authors":"Aristidis P. Athanasiou, Charalampos N. Raftopoulos, Eleftherios D. Thanos, Georgios V. Kritharellis, N. Tselikas, I. E. Foukarakis, A. Boucouvalas","doi":"10.1109/PCi.2012.30","DOIUrl":"https://doi.org/10.1109/PCi.2012.30","url":null,"abstract":"Online advertising tends to be one of the best ways for promotion and advertising in our days. The more targeted an advertisement is, the more efficient and attractive could also be to the end user. On the other hand, Internet targeted advertising is mostly based on user's personal information such as profiling, Internet habits, history, etc, even if part of such information could be characterized as private. Thus, gathering and analyzing users' information might raise serious privacy concerns. This paper presents a privacy-aware, ontology-based middleware architecture enabling information collection and analysis coming from real-time communication (i.e. chat applications) and triggering third party advertising servers, in order to achieve targeted advertising relevant to the real-time content.","PeriodicalId":131195,"journal":{"name":"2012 16th Panhellenic Conference on Informatics","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134407013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
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