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A Query Recommending Scheme for an efficient evidence search in e-Discovery 基于查询推荐方案的电子证据检索
Pub Date : 2014-03-27 DOI: 10.1109/ICACT.2014.6779156
Heon-min Lee, Su-bin Han, Taerim Lee, Sanguk Shin
In recent years, the importance of e-Discovery is being strongly emphasized according to the rapid increase of litigation between the business corporations. The success of e-Discovery depends on how well the litigant and lawyer search relevant evidence, and it is closely associated with making fine queries based on their analysis of complaint and data set. Therefore, this paper proposes a Query Recommending Scheme called QRS for an efficient evidence search in e-Discovery procedure. This scheme is composed with four different phases and various techniques are applied such as document parsing, machine learning and scoring. We describe how QRS works using the flow chart and introduce further researches for the improvement of QRS.
近年来,随着商事公司间诉讼案件的迅速增多,电子举证的重要性日益受到重视。电子举证的成功与否取决于当事人和律师对相关证据的搜索能力,而这与基于对投诉和数据集的分析而做出准确的查询密切相关。为此,本文提出了一种名为QRS的查询推荐方案,用于电子证据发现过程中的高效证据检索。该方案由四个不同的阶段组成,采用了文档解析、机器学习和评分等技术。我们使用流程图描述了QRS的工作原理,并介绍了改进QRS的进一步研究。
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引用次数: 2
DVB-RCS: Efficiently quantized turbo decoder DVB-RCS:高效量化turbo解码器
Pub Date : 2014-03-27 DOI: 10.1109/ICACT.2014.6779202
S. Shaker
Turbo codes have been incorporated into many important wireless communication standards including the satellite return channel in DVB-RCS standards. According to their iterative nature, the computational complexity of turbo decoder is much higher than that of convolutional FEC decoders. From the hardware implementation point of view, the complexity can be reduced by using quantized decoder. For DVB-RCS turbo coding, there are many block sizes and different code rates. In order to realize the DVB-RCS turbo decoder efficiently, an algorithm should be developed for the best computation of quantization range for each code rate and at different signal-to-noise ratios. This paper investigates the decoder input quantization of low complexity decoding algorithm and proposes an algorithm for efficient decoder quantization by introducing a scaling factor into the decoding algorithm, aiming to achieve significant improvement in the hardware implementation of the decoder architecture.
Turbo码已被纳入许多重要的无线通信标准,包括DVB-RCS标准中的卫星返回信道。由于turbo译码器的迭代特性,其计算复杂度远高于卷积FEC译码器。从硬件实现的角度来看,采用量化解码器可以降低复杂度。对于DVB-RCS turbo编码,有许多块大小和不同的码率。为了有效地实现DVB-RCS turbo译码器,需要研究在不同码率和信噪比下量化范围的最佳计算算法。本文对低复杂度译码算法的解码器输入量化进行了研究,提出了一种通过在译码算法中引入比例因子实现高效解码器量化的算法,旨在显著改进解码器架构的硬件实现。
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引用次数: 3
Ultrasonic sensor system for ecology observation and timing synchronization of ZigBee network 用于ZigBee网络生态观测和定时同步的超声波传感器系统
Pub Date : 2014-03-27 DOI: 10.1109/ICACT.2014.6778983
A. Morikawa, Hiroshi Yamamoto, Maki Yamamoto, K. Yamazaki
Timing synchronization is essential in case where multiple sensor nodes with ultrasonic sensors are deployed on the same place. This is because the ultrasonic sensors should be powered at an appropriate timing so as to prevent ultrasonic interference. In this paper, we propose a harmful bird attack system and a new timing synchronization method for ZigBee sensor network. In this timing synchronizing method, by concentrating the processing load to the server, the amount of calculation on each node can be minimized and is unaffected by the increase in the number of nodes. Evaluation of the proposed method has shown that it sufficiently fulfills the timing requirement for the proposed harmful birds attack system.
如果多个传感器节点与超声波传感器部署在同一位置,定时同步是必不可少的。这是因为超声波传感器应在适当的时间供电,以防止超声波干扰。本文提出了一种针对ZigBee传感器网络的有害鸟类攻击系统和一种新的定时同步方法。在这种定时同步方法中,通过将处理负载集中到服务器上,可以将每个节点上的计算量降至最低,并且不受节点数量增加的影响。对所提方法的评价表明,该方法能充分满足所提害鸟攻击系统的定时要求。
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引用次数: 1
Building firewall over the software-defined network controller 在软件定义的网络控制器上构建防火墙
Pub Date : 2014-03-27 DOI: 10.1109/ICACT.2014.6779061
M. Suh, Sae Hyong Park, Byungjoon Lee, Sunhee Yang
Many have recognized the need to restructure the current internet work into a much more dynamic networking environment. It is difficult for today's inflexible infrastructure to cope with the fast changing demands of the users. As a result, Software-Defined Network (SDN) was introduced around 2005 to transform today's network to have centralized management, rapid innovation, and programmability by decoupling the control and data planes. This study focuses on developing a firewall application that runs over an OpenFlow-based SDN controller to show that most of the firewall functionalities are able to be built on software, without the aid of a dedicated hardware. Among many OpenFlow controllers that already exist for the public, we have chosen POX written in Python for the experiment; and to create the SDN network topology, we have used VirtualBox and Mininet. In this study, we cover the implementation detail of our firewall application, as well as the experimentation result.
许多人已经认识到需要将当前的互联网工作重组为一个更加动态的网络环境。当今缺乏灵活性的基础设施很难满足用户快速变化的需求。因此,2005年左右引入了软件定义网络(SDN),通过分离控制平面和数据平面,将当今的网络转变为具有集中管理、快速创新和可编程性的网络。本研究的重点是开发一个运行在基于openflow的SDN控制器上的防火墙应用程序,以表明大多数防火墙功能能够在软件上构建,而无需专用硬件的帮助。在许多已经为公众存在的OpenFlow控制器中,我们选择了用Python编写的POX进行实验;为了创建SDN网络拓扑,我们使用了VirtualBox和Mininet。在本研究中,我们介绍了我们的防火墙应用程序的实现细节,以及实验结果。
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引用次数: 90
Development of yield prediction system based on real-time agricultural meteorological information 基于实时农业气象信息的产量预测系统开发
Pub Date : 2014-03-27 DOI: 10.1109/ICACT.2014.6779168
Haedong Lee, Aekyung Moon
This paper contains about the research and the building of an effective agricultural yield forecasting system based on real-time monthly weather. It is difficult to predict the agricultural crop production because of the abnormal weather that happens every year and rapid regional climate change due to global warming. The development of agricultural yield forecasting system that leverages real-time weather information is urgently required. In this research, we cover how to process the number of weather data(monthly, daily) and how to configure the prediction system. We establish a non-parametric statistical model on the basis of 33 years of agricultural weather information. According to the implemented model, we predict final production using the monthly weather information. This paper contains the results of the simulation.
本文研究并建立了一个有效的基于实时月度天气的农业产量预报系统。由于每年发生的异常天气和全球变暖导致的快速区域气候变化,使农业作物产量难以预测。开发利用实时天气信息的农业产量预报系统是迫切需要的。在本研究中,我们介绍了如何处理天气数据的数量(月、日)和如何配置预测系统。以33年农业气象资料为基础,建立了非参数统计模型。根据所实现的模型,我们利用每月的天气信息来预测最终的产量。本文给出了仿真结果。
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引用次数: 17
A parallel implementation of JPEG2000 encoder on multi-GPU system JPEG2000编码器在多gpu系统上的并行实现
Pub Date : 2014-03-27 DOI: 10.1109/ICACT.2014.6779033
Bumho Kim, Jeong-Woo Lee, K. Yoon
There has been an increase in the demand for a high-quality video codec that supports 4K (3,840 × 2,160) or more. JPEG2000 is an important technique for data compression, which has been successfully used in digital cinema and medical application. To process the high workload of JPEG2000 coding for large-scale video data, hybrid CPU/GPU platform is used to obtain high computing power. In this paper, we develop and implementation of the JPEG2000 compression standard in hybrid CPU/GPU platforms. Specifically, we develop multi-GPU implementations of the JPEG2000 encode to obtain high computing power and balance the load between cores and GPUs in the hybrid architecture. In out experiments with multi-GPU, we couple the JPEG2000 codec optimized for multicores and multi-GPUs and achieve high performance of the JPEG2000 compression.
对支持4K (3840 × 2160)或更高分辨率的高质量视频编解码器的需求有所增加。JPEG2000是一种重要的数据压缩技术,已成功应用于数字电影和医疗领域。为了处理JPEG2000编码对大规模视频数据的高工作量,采用CPU/GPU混合平台来获得高计算能力。本文在CPU/GPU混合平台上开发并实现了JPEG2000压缩标准。具体而言,我们开发了JPEG2000编码的多gpu实现,以获得高计算能力,并在混合架构中平衡内核和gpu之间的负载。在我们的多gpu实验中,我们将针对多核和多gpu优化的JPEG2000编解码器耦合在一起,实现了JPEG2000的高性能压缩。
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引用次数: 3
IRIS: The Openflow-based Recursive SDN controller IRIS:基于openflow的递归SDN控制器
Pub Date : 2014-03-27 DOI: 10.1109/ICACT.2014.6779154
Byungjoon Lee, Sae Hyong Park, Jisoo Shin, Sunhee Yang
SDN is a novel and promising networking technology that enables a software-based control over reactive packet-switching devices which query forwarding decisions for every flow: by controlling the answers to the queries, it is possible to `program' the whole network according to a specific set of networking policies. That kind of programmability is backed by NOS (Network OS), which is usually called SDN controller. A Controller supports network-controlling applications to run on top of it by transparently dealing with the actual communication with the switching devices. However, as the controller is normally centralized, the scalability and availability issue is inevitable: a controller should provide reasonable performance to each of the switching device regardless of the network size, and guarantee the non-stop operation of NOS applications against system and software failures to prevent the whole network from halting on the control plane crashes. In this paper, we investigate the issues deeply, and introduce a comprehensive solution called IRIS (ETRI Recursive SDN controller platform).
SDN是一种新颖而有前途的网络技术,它使基于软件的控制反应性分组交换设备能够查询每个流的转发决策:通过控制查询的答案,可以根据一组特定的网络策略“编程”整个网络。这种可编程性是由NOS (Network OS)支持的,它通常被称为SDN控制器。控制器通过透明地处理与交换设备的实际通信,支持网络控制应用程序在其上运行。然而,由于控制器通常是集中式的,可扩展性和可用性问题是不可避免的:无论网络大小,控制器都应该为每个交换设备提供合理的性能,并保证NOS应用程序在系统和软件故障时不间断运行,以防止整个网络因控制平面崩溃而停止。在本文中,我们深入研究了这些问题,并介绍了一个名为IRIS (ETRI递归SDN控制器平台)的综合解决方案。
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引用次数: 45
Design of small-area transimpedance optical receiver module for optical interconnects 光互连用小面积透阻光接收模块的设计
Pub Date : 2014-03-27 DOI: 10.1109/ICACT.2014.6779184
J. Sangirov, I. Ukaegbu, N. Nguyen, Tae-Woo Lee, M. Cho, Hyo-Hoon Park
The development and miniaturization of electronic devices and components is pushing the system devices and their interconnecting interfaces to become even smaller. Thus, reducing the size of receiver (Rx) and transmitter (Tx) chips plays an plays an important role in designing a small-size optical modules utilized in o/e and e/o converters. Therefore, designing a small-area optical Rx may require intuitive solutions, such as building single-ended Rx and utilizing some of the advantages of differential Rx. Optical Rx should convert optical input signal to voltage output signal and provide sufficient gain and frequency operation for feeding to subsequent blocks including clock and data recovery circuit (CDR) and/or Serializer and Deserializer (SerDes). Therefore, we have designed a small-area transimpedance optical receiver (TIORx) using regulated-cascode (RGC) as an input stage which converts input photocurrent to voltage signal. The RGC block is connected to post amplifying stages to increase the overall transimpedance gain of the TIORx. The post amplifying gain stages utilizes two intersecting active feedback in order to increase the frequency operation in addition to increasing the gain of the proposed TIORx chip. The TIORx module is designed in a 0.13μm CMOS technology and works up to 10 Gbps data rate. The TIORx chip core occupies an area of 0.051mm2 with power consumption of 16.9 mW at 1.3 V. A measured 3-dB bandwidth of 6.9 GHz was obtained for the TIORx module with a transimpedance gain of 60 dBQ.
电子设备和元件的发展和小型化正在推动系统设备及其互连接口变得更小。因此,减小接收(Rx)和发送(Tx)芯片的尺寸对于设计用于o/e和e/o转换器的小尺寸光模块具有重要作用。因此,设计一个小面积的光学Rx可能需要直观的解决方案,例如构建单端Rx和利用差分Rx的一些优点。光学Rx应将光输入信号转换为电压输出信号,并提供足够的增益和频率操作,以馈送到后续模块,包括时钟和数据恢复电路(CDR)和/或串行和反串行器(SerDes)。因此,我们设计了一个小面积透阻光接收器(TIORx),使用调节级联码(RGC)作为输入级,将输入光电流转换为电压信号。RGC模块连接到后放大级,以增加TIORx的整体跨阻增益。后放大增益级利用两个相交的有源反馈,除了增加所提出的TIORx芯片的增益外,还增加了频率操作。TIORx模块采用0.13μm CMOS技术设计,数据速率高达10gbps。TIORx芯片核心面积为0.051mm2, 1.3 V时功耗为16.9 mW。TIORx模块测量到的3db带宽为6.9 GHz,跨阻增益为60 dBQ。
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引用次数: 1
Template-based traditional building component modelling 基于模板的传统建筑构件建模
Pub Date : 2014-03-27 DOI: 10.1109/ICACT.2014.6779043
Jae Woo Kim, Kyung-Kyu Kang, Ji Hyung Lee
Creating 3D object models is a crucial in many areas such as computer graphics, virtual reality, animations, and computer aided design(CAD). In this paper, we discuss our ongoing research on creating traditional building component modelling using component templates. We developed a prototype system that can create building component templates by editing fundamental 3D object primitives using the open source CAD software FreeCAD. Once a building component template is created, it will be segmented and analyzed to select the unit shapes that are commonly and frequently used for a variety of component templates, and they will be registered back into the primitive database so that they can be used in creating other templates in the future. Our system provides easy-to-use editing tool that a user can create the shape of the building component and then the system automatically generate a set of parameters necessary to describe the shape. Our experience showed that users can easily create the component templates they desire to make in a few minutes.
创建3D对象模型在计算机图形学、虚拟现实、动画和计算机辅助设计(CAD)等许多领域都是至关重要的。在本文中,我们讨论了我们正在进行的使用组件模板创建传统建筑组件建模的研究。我们开发了一个原型系统,该系统可以通过使用开源CAD软件FreeCAD编辑基本的3D对象原语来创建建筑组件模板。一旦创建了一个建筑组件模板,它将被分割和分析,以选择通常和经常用于各种组件模板的单元形状,并将它们注册回原语数据库,以便将来可以在创建其他模板时使用它们。我们的系统提供了易于使用的编辑工具,用户可以创建建筑构件的形状,然后系统自动生成一组必要的参数来描述形状。我们的经验表明,用户可以在几分钟内轻松创建他们想要的组件模板。
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引用次数: 1
Design of construction stability test system using small unmanned aerial vehicle based on image processing 基于图像处理的小型无人机建筑稳定性测试系统设计
Pub Date : 2014-03-27 DOI: 10.1109/ICACT.2014.6779171
Sung-suk Choi, E. Kim
Stability test of high-rise buildings must be achieved periodically for the buildings' maintenance, but there are many problems that it is dangerous for inspector to make a personal test, it needs much time and cost, and accurate diagnosis is difficult. This paper proposes a monitoring system for construction stability test based on image processing to analyze and process data from sensors in the vehicle to inspect internal and exterior crack and deformation of constructions by using unmanned aerial vehicle. The system loads various sensors such as temperature sensor, humidity sensor, smoke sensor, illuminance sensor, CO2 sensor, ultrasonic sensor, and infrared thermal imaging sensor and can achieve stability inspection. So, It can reduce inspection time and building's maintenance cost.
高层建筑的稳定性检测是高层建筑维修必须定期进行的,但检测人员亲自检测存在着危险、费时、费钱、难以准确诊断等问题。本文提出了一种基于图像处理的建筑稳定性试验监测系统,利用无人机对来自车内传感器的数据进行分析处理,检测建筑的内外裂缝和变形。系统加载温度传感器、湿度传感器、烟雾传感器、照度传感器、CO2传感器、超声波传感器、红外热成像传感器等多种传感器,实现稳定性检测。因此,它可以减少检查时间和建筑物的维护成本。
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引用次数: 1
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16th International Conference on Advanced Communication Technology
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