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2017 IEEE 7th International Symposium on Cloud and Service Computing (SC2)最新文献

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A Lightweight Approach to Detect the Low/High Rate IP Spoofed Cloud DDoS Attacks 一种低速率/高速率IP欺骗云DDoS攻击的轻量级检测方法
Neha Agrawal, S. Tapaswi
In cloud computing, broadly two facets of Distributed Denial-of-Service (DDoS) attack exist. The attacker uses Internet Protocol (IP) spoofing technique for launching the DDoS attack to disguise the source's identity. Consequently, its detection becomes a crucial and challenging task. The objective of the paper is to propose an adaptive and lightweight approach which can detect the low and high rate spoofed DDoS attack traffic accurately. The approach is implemented in a closed cloud environment. The experimental results showed that the approach can effectively detect internal and external low/high rate spoofed DDoS attacks with 99.3% accuracy and provides better performance.
在云计算中,分布式拒绝服务(DDoS)攻击大致存在两个方面。攻击者利用IP (Internet Protocol)欺骗技术发动DDoS攻击,以伪装源的身份。因此,它的检测成为一项至关重要和具有挑战性的任务。本文的目的是提出一种能够准确检测低速率和高速率欺骗DDoS攻击流量的自适应轻量级方法。该方法在封闭的云环境中实现。实验结果表明,该方法能够有效检测内部和外部的低/高速率欺骗DDoS攻击,准确率达到99.3%,具有较好的性能。
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引用次数: 19
A Distributed Cloud Service for the Resolution of SAT 面向SAT分辨率的分布式云服务
Yanik Ngoko, D. Trystram, C. Cérin
In this paper, we introduce a new parallel and distributed algorithm for the resolution of the satisfiability problem. The proposed algorithm is based on algorithm portfolio and is intended to be used for servicing requests in a distributed cloud. The core of our contribution is the modeling of the optimal resource sharing schedule in parallel executions and the proposition of heuristics for its approximation. For this purpose, we reformulate a computational problem introduced in prior work. The main assumption is that it is possible to learn the optimal resource sharing from traces collected on past executions on a representative set of instances. We show that the learning can be formalized as a set coverage problem. Then, we propose to solve it by approximation and dynamic programming algorithms. These algorithms are based on classical greedy algorithms for the maximum coverage problem. Finally, we conduct an experimental evaluation for comparing the performance of the various proposed algorithms. The results show that some algorithms become more competitive if we intend to determine the trade-off between their quality and the runtime required for their computation.
本文提出了一种新的求解可满足性问题的并行分布式算法。提出的算法基于算法组合,旨在用于分布式云中的请求服务。我们贡献的核心是并行执行中最优资源共享调度的建模和启发式近似的提出。为此,我们重新表述了先前工作中引入的一个计算问题。主要的假设是,有可能从一组有代表性的实例上收集的过去执行的跟踪信息中了解到最佳的资源共享。我们证明了学习可以形式化为一个集合覆盖问题。然后,我们提出了用逼近和动态规划算法来求解它。这些算法是基于经典的贪心算法来解决最大覆盖问题的。最后,我们进行了实验评估,以比较各种算法的性能。结果表明,如果我们打算确定它们的质量和计算所需的运行时间之间的权衡,一些算法会变得更具竞争力。
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引用次数: 1
Cyber Security Body of Knowledge 网络安全知识体系
Evon M. O. Abu-Taieh
The cyber world is an ever-changing world, cyber security is most importance and touches the lives of everyone on the cyber world including: Researchers, students, businesses, academia, and novice user. The paper suggests a body of knowledge that incorporate the view of academia as well as practitioners. This research attempts to put basic step and a frame work for cyber security body of knowledge and to allow practitioners and academicians to face the problem of lack of standardization. Furthermore, the paper attempt to bridge the gap between the different audience. The gap is so broad that the term of cyber security is not agreed upon even in spelling. The suggested body of knowledge may not be perfect yet it is a step forward.
网络世界是一个瞬息万变的世界,网络安全是最重要的,涉及网络世界上每个人的生活,包括:研究人员,学生,企业,学术界和新手用户。本文提出了一个包含学术界和实践者观点的知识体系。本研究试图为网络安全知识体系提供基本步骤和框架,并使从业者和学者能够面对缺乏标准化的问题。此外,本文试图弥合不同受众之间的差距。差距如此之大,以至于网络安全一词甚至在拼写上都没有达成一致。所建议的知识体系可能并不完美,但它是向前迈出的一步。
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引用次数: 69
A Hidden Markov Model-Based Map-Matching Approach for Low-Sampling-Rate GPS Trajectories 基于隐马尔可夫模型的低采样率GPS轨迹匹配方法
Yu-Ling Hsueh, Ho-Chian Chen, Wei-Jie Huang
Map matching is the process of matching a series of recorded geographic coordinates (e.g., a GPS trajectory) to a road network. Due to GPS positioning errors and the sampling constraints, the GPS data collected by the GPS devices are not precise, and the location of a user cannot always be correctly shown on the map. Unfortunately, most current map-matching algorithms only consider the distance between the GPS points and the road segments, the topology of the road network, and the speed constraint of the road segment to determine the matching results. In this paper, we propose a spatio-temporal based matching algorithm (STD-matching) for low-sampling-rate GPS trajectories. STD-matching considers the spatial features such as the distance information and topology of the road network, the speed constraints of the road network, and the realtime moving direction which shows the movement of the user. In our experiments, we compare STD-matching with three existing algorithms, the ST-matching algorithm, the stMM algorithm, and the HMM-RCM algorithm, using a real data set. The experiment results show that our STD-matching algorithm outperforms the three existing algorithms in terms of matching accuracy.
地图匹配是将一系列记录的地理坐标(例如GPS轨迹)与道路网络匹配的过程。由于GPS定位误差和采样限制,GPS设备收集的GPS数据并不精确,用户的位置并不总是能正确地显示在地图上。遗憾的是,目前大多数地图匹配算法仅考虑GPS点与道路段之间的距离、道路网络的拓扑结构以及道路段的速度约束来确定匹配结果。本文提出了一种基于时空的低采样率GPS轨迹匹配算法。std匹配考虑了道路网络的距离信息和拓扑结构等空间特征、道路网络的速度约束以及显示用户运动的实时运动方向。在实验中,我们使用真实数据集,将std匹配与现有的三种算法(st匹配算法、stMM算法和HMM-RCM算法)进行了比较。实验结果表明,我们的std匹配算法在匹配精度上优于现有的三种算法。
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引用次数: 10
Reducing Imbalance Ratio in MapReduce 减少MapReduce中的失衡比例
Hsing-Lung Chen, Y. Shen
In order to speed up the processing, MapReduce invokes many mappers and reducers concurrently. Each mapper sends the intermediate map-outputs to reducers according to the key of data. For some big data with the property of data skew, some partitions will own a huge amounts of data. Thus, some reducers need more time to process their assigned partitions, resulting in increasing the total execution time. This paper proposes a balanced partition method to divide the intermediate map-outputs evenly. The balanced partition method has a preprocessing mapreduce (mapper1 and reducer1) by which partitioner is derived. The mapper1 is used to counting key frequencies by employing trie data structure efficiently. In reducer1, based on all the key frequencies, many sub-partitions are derived by cut-points and these sub-partitions are evenly distributed to partitions. The cut-points and the mapping table are used in every mappers of the application mapreduce for partitioning the intermediate map-outputs evenly, resulting in reducing the execution time.
为了加快处理速度,MapReduce并发地调用了许多映射器和reducer。每个映射器根据数据的键值将中间映射输出发送给reducer。对于一些具有数据倾斜属性的大数据,一些分区会拥有大量的数据。因此,一些reducer需要更多的时间来处理它们分配的分区,从而增加了总执行时间。本文提出了一种平衡划分方法,对中间映射输出进行均匀划分。平衡分区方法有一个预处理mapreduce (mapper1和reducer1),通过它派生分区器。mapper1采用trie数据结构,有效地实现了键频率的计数。在reducer1中,基于所有的键频率,通过切割点派生出许多子分区,并且这些子分区均匀地分布到分区中。在应用程序mapreduce的每个映射器中使用截断点和映射表,以便均匀地对中间映射输出进行分区,从而减少执行时间。
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引用次数: 2
A Recommendation-Based Parameter Tuning Approach for Hadoop 基于推荐的Hadoop参数调优方法
Lin Cai, Yong Qi, Jingwei Li
Nowadays we have entered the big data era. Hadoop, one of the popular big data processing platforms, has many parameters that relate closely to the utilization of resources (e.g. CPU or memory). Tuning these parameters thus becomes one of the important approaches to improve the resource utilization of Hadoop. However, tuning parameters manually is impractical because the time cost fortuning is too high. Hence it is necessary to configure parameters automatically and quickly to optimize resource utilization. The former auto-tuning methods often take a long time before getting the optimal configuration, which would reduce the overall resource efficiency of cluster. In this paper, we propose mrEtalon, an adaptive tuning framework to recommend a near-optimal configuration for the new job in a short time. mrEtalon sets a configuration repository to provide candidate configurations, as well as a collaborative filtering based recommendation engine that can accelerate the optimization for parameters. We have deployed mrEtalon in our experimental cluster, and the results demonstrate that, for a new MapReduce application, compared to the former methods, mrEtalon can reduce the recommend time to 20% to 30% while keeping nearly the same recommendation quality.
如今,我们已经进入了大数据时代。Hadoop是流行的大数据处理平台之一,它有许多与资源利用率(例如CPU或内存)密切相关的参数。因此,调优这些参数成为提高Hadoop资源利用率的重要方法之一。然而,手动调优参数是不切实际的,因为时间成本太高。因此,有必要自动、快速地配置参数,以优化资源利用。以往的自动调优方法往往需要较长的时间才能得到最优配置,这将降低集群的整体资源效率。在本文中,我们提出了mrEtalon,这是一个自适应调优框架,可以在短时间内为新作业推荐接近最优的配置。mrEtalon设置了一个配置存储库来提供候选配置,以及一个基于协作过滤的推荐引擎,可以加速参数的优化。我们在我们的实验集群中部署了mrEtalon,结果表明,对于一个新的MapReduce应用程序,与以前的方法相比,mrEtalon可以将推荐时间减少到20%到30%,同时保持几乎相同的推荐质量。
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引用次数: 7
Analysis of Influential Factors in Secondary PM2.5 by K-Medoids and Correlation Coefficient 二次PM2.5影响因素的k -介质和相关系数分析
Jui-Hung Chang, Chien-Yuan Tseng, Hung-Hsi Chiang, Ren-Hung Hwang
There are many influential factors in PM2.5, reducing the emission of PM2.5 is one of international subjects. In recent years, it is indicated that one of the sources of secondary PM2.5 is the complex chemical reaction between NH3 and air pollutants (VOCs, particulate matter, NOx, SOx). The Committee on Agriculture of FAO indicates that 64% of NH3 emission on the earth surface is derived from stock raising which motivates this study to discuss following two subjects based on Open Government Data. Subject 1 calculates the effect of the controlled air pollutants (VOCs, particulate matter, NOx, SOx) and the quantity of livestock (e.g. pigs, chickens and so on) nearby the air monitoring stations on the annual mean of PM2.5. Subject 2 uses Apache Spark as Cloud computing platform, the air monitoring stations are geographically clustered by K-medoids to calculate the Spearman's correlation coefficient of pollution source and PM2.5 of each cluster. The experimental results show that the monitoring station with more air pollutants and livestock raised nearby has higher annual mean PM2.5 concentration. The results are expected to provide the government bodies to make environmental decisions and the plants and livestock farms to install air monitors to analyze the air quality data. Our ultimate goals are to improve the environment and reduce both the emission of PM2.5 and the probability of getting cardiovascular disease.
PM2.5的影响因素很多,减少PM2.5的排放是国际课题之一。近年来研究表明,NH3与大气污染物(VOCs、颗粒物、NOx、SOx)的复杂化学反应是二次PM2.5的来源之一。粮农组织农业委员会指出,地球表面64%的NH3排放来自畜牧业,这促使本研究基于开放政府数据讨论以下两个主题。课题1计算空气监测站附近受控制的大气污染物(VOCs、颗粒物、NOx、SOx)和牲畜(如猪、鸡等)数量对PM2.5年平均值的影响。课题2使用Apache Spark作为云计算平台,对空气监测站进行k - medidoids地理聚类,计算每个聚类的污染源与PM2.5的Spearman相关系数。实验结果表明,空气污染物越多、附近饲养家畜越多的监测站,PM2.5的年平均浓度越高。预计该结果将为政府部门制定环境决策提供依据,并为工厂和畜牧场安装空气监测器以分析空气质量数据提供依据。我们的最终目标是改善环境,减少PM2.5的排放,降低患心血管疾病的几率。
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引用次数: 0
Building Microclouds at the Network Edge with the Cloudy Platform 使用云平台在网络边缘构建微云
Felix Freitag, R. P. Centelles, L. Navarro
Edge computing enables new types of services which operate at the network edge. There are important use cases in pervasive computing, ambient intelligence and the Internet of Things (IoT) for edge computing. In this demo paper we present microclouds deployed at the networks edge in the Guifi.net community network leveraging an open extensible platform called Cloudy. The demonstration focuses on the following aspects: The usage of Cloudy for end users, the services of Cloudy to build microclouds, and the application scenarios of IoT data management within microclouds.
边缘计算使在网络边缘运行的新型服务成为可能。在普适计算、环境智能和边缘计算的物联网(IoT)中有重要的用例。在这篇演示论文中,我们展示了部署在gufi.net社区网络边缘的微云,利用一个名为Cloudy的开放可扩展平台。演示内容主要包括:cloud对终端用户的使用,cloud构建微云的服务,以及微云中物联网数据管理的应用场景。
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引用次数: 1
Using ANN to Analyze the Correlation Between Tourism-Related Hot Words and Tourist Numbers: A Case Study in Japan 使用 ANN 分析旅游相关热词与游客人数之间的相关性:日本案例研究
Jui-Hung Chang, Chien-Yuan Tseng, Ren-Hung Hwang, Mingcao Ma
Google's search engine has recorded the popularity of a great number of tourism-related hot words. Prior to vacationing, many people will search the four dimensions of tourism, namely food, fashion, accommodation and transportation, on the Internet before an overseas trip. Exploring the correlation between popularity trends of tourism-related hot words and the number of tourists visiting a particular destination is a potentially valuable research area for the tourist industry. Therefore, this study counted the occurrence frequency of words related to Japanese tourism in the Google search engine and in tourism articles on electronic news websites. With these data, it calculated the Pearson correlation coefficient of the number of Taiwanese tourists visiting Japan "n" months later. Additionally, a deep learning (Artificial Neural Network) model was established, and the relationship between the popularity scores of tourism-related hot words and the interval of the number of Taiwanese tourists in Japan was examined. The research results show that the popularity of tourism-related hot words on Google is highly related to the number of Taiwanese tourists visiting Japan.
谷歌搜索引擎记录了大量与旅游相关的热词。很多人在出国度假前都会上网搜索旅游的四个方面,即吃、穿、住、行。探索旅游相关热词的流行趋势与特定目的地游客数量之间的相关性,对旅游业来说是一个具有潜在价值的研究领域。因此,本研究统计了日本旅游相关词汇在谷歌搜索引擎和电子新闻网站旅游文章中的出现频率。通过这些数据,本研究计算了 "n "个月后赴日旅游的台湾游客人数的皮尔逊相关系数。此外,还建立了深度学习(人工神经网络)模型,研究了旅游相关热词的流行度得分与台湾赴日游客人数区间的关系。研究结果表明,旅游相关热词在谷歌上的受欢迎程度与台湾游客访日人数高度相关。
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引用次数: 2
A Mobile Cloud-Based Biofeedback Platform for Evaluating Medication Response 一种基于云的移动生物反馈平台,用于评估药物反应
Yu-Zheng Lai, Chih-Hua Tai, Yue-Shan Chang, Kuo-Hsuan Chung
In recent years, biofeedback has been widely applied into diagnosis and treatment of various diseases. There are also increasingly research exploiting various ICT (Information & Communication Technology) technologies, such as cloud technology, to achieve diagnosis and treatment. Therefore, how to use mobile cloud technology to assist the disease's diagnosis, to record treatment status, and to infer the result will be an important issue. In this paper, we will propose a mobile cloud platform and framework for the patient of mental illness for evaluating medication response through a variety of biofeedback information collection, integration, and fusion, so that physician can know the patient's situation. The physiological data including Heart Rate Variability and Brain Wave are collected through wearable sensors. And the psychological data is collected through monthly mood chart. The biofeedback physiological and psychological data can be fused into together to show the medication response after patient taking some medicines. An APP for the framework has been developed to show the effectiveness.
近年来,生物反馈已广泛应用于各种疾病的诊断和治疗。越来越多的研究利用各种ICT(信息通信技术)技术,如云技术,来实现诊断和治疗。因此,如何利用移动云技术辅助疾病的诊断,记录治疗状态,推断结果将是一个重要的问题。在本文中,我们将为精神疾病患者提出一个移动云平台和框架,通过各种生物反馈信息的收集、整合和融合,评估药物反应,使医生能够了解患者的情况。通过可穿戴传感器采集心率变异性、脑电波等生理数据。通过月度情绪图收集心理数据。生物反馈的生理和心理数据可以融合在一起,显示患者服用某些药物后的药物反应。为该框架开发了一个应用程序,以显示其有效性。
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引用次数: 1
期刊
2017 IEEE 7th International Symposium on Cloud and Service Computing (SC2)
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