• Title, Summary, Keyword: Hybrid Computing

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Hybrid Self Organizing Map using Monte Carlo Computing

  • Jun Sung-Hae;Park Min-Jae;Oh Kyung-Whan
    • Proceedings of the Korean Institute of Intelligent Systems Conference
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    • pp.381-384
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    • 2006
  • Self Organizing Map(SOM) is a powerful neural network model for unsupervised loaming. In many clustering works with exploratory data analysis, it has been popularly used. But it has a weakness which is the poorly theoretical base. A lot more researches for settling the problem have been published. Also, our paper proposes a method to overcome the drawback of SOM. As compared with the presented researches, our method has a different approach to solve the problem. So, a hybrid SOM is proposed in this paper. Using Monte Carlo computing, a hybrid SOM improves the performance of clustering. We verify the improved performance of a hybrid SOM according to the experimental results using UCI machine loaming repository. In addition to, the number of clusters is determined by our hybrid SOM.

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Implementation of Fog Computing Architecture for IoT Service on Hybrid Broadcast Environment (하이브리드 방송 환경에서의 IoT 서비스 지원을 위한 Fog Computing Architecture 구현)

  • Kum, Seung Woo;Lim, Tae-Beom;Park, Jong-Il
    • Journal of Broadcast Engineering
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    • v.22 no.1
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    • pp.107-117
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    • 2017
  • Recently, IoT applications are being deployed in Smart TVs, and these IoT applications are using smart TVs as application platforms rather than broadcast platforms. With the advent of Hybrid broadcast technologies, now it becomes available to develop IoT applications which are coupled to the broadcast information. However, the existing IoT services are not suitable for Hybrid broadcast application since they are built on cloud and require various protocol implementations. In this paper, a Fog Computing-based architecture for hybrid broadcast application is proposed. Instead of accessing IoT services from hybrid broadcast app directly, the proposed architecture places Fog Applet Server between them and distribute loads of hybrid broadcast app to the Fog Applet. The proposed architecture is implemented as a service to control IoT device with hybrid application.

CMOS-Memristor Hybrid 4-bit Multiplier Circuit for Energy-Efficient Computing

  • Vo, Huan Minh;Truong, Son Ngoc;Shin, Sanghak;Min, Kyeong-Sik
    • Journal of IKEEE
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    • v.18 no.2
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    • pp.228-233
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    • 2014
  • In this paper, we propose a CMOS-memristor hybrid circuit that can perform 4-bit multiplication for future energy-efficient computing in nano-scale digital systems. The proposed CMOS-memristor hybrid circuit is based on the parallel architecture with AND and OR planes. This parallel architecture can be very useful in improving the power-delay product of the proposed circuit compared to the conventional CMOS array multiplier. Particularly, from the SPECTRE simulation of the proposed hybrid circuit with 0.13-mm CMOS devices and memristors, this proposed multiplier is estimated to have better power-delay product by 48% compared to the conventional CMOS array multiplier. In addition to this improvement in energy efficiency, this 4-bit multiplier circuit can occupy smaller area than the conventional array multiplier, because each cross-point memristor can be made only as small as $4F^2$.

Hybrid Computing Method for Customer Satisfaction Index (고객만족도의 HYBRID 중요도 산출방법)

  • Cho Yong-Jun;Kim Yeong-Hwa
    • The Korean Journal of Applied Statistics
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    • v.19 no.1
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    • pp.43-55
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    • 2006
  • CS(Customer Satisfaction) has been focused as one of the most important factors in business administration nowadays. After measuring and evaluating CS level, most companies are performing many activities to improve it. Therefore, it is very important for driving CS management to measure the exact CS level. When measuring CS level, however, CSI(Customer Satisfaction Index) is changed by the computing method of importance for CS factors, and the corporate strategy is changed by CSI. In this research, some computing methods are reviewed and compared through the analysis of real data. Also, a hybrid computing method for CSI is proposed and compared it with other methods.

Design of An Authentication System Proper for Hybrid Cloud Computing System (하이브리드 클라우드 컴퓨팅 환경에 적합한 인증시스템 설계)

  • Lee, Geuk;Ji, Jae-Won;Chun, Hyun-Woo;Lee, Kyu-Won
    • Convergence Security Journal
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    • v.11 no.6
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    • pp.31-36
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    • 2011
  • Cloud computing is a system which efficiently utilizes resources. In this paper, we propose 2-factor authentication system combing PKI, ID_PW and location information. The proposed method improve the security of hybrid cloud systems and manage resources more safely.

The Contents management of Access Grid Node using Hybrid P2P Computing (Access Grid 기반구조에서 Hybrid P2P Computing 기법을 이용한 Node의 컨텐츠 관리)

  • 홍필두;이용우
    • Proceedings of the Korean Information Science Society Conference
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    • pp.40-42
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    • 2004
  • Access Grid는 상호공동작업을 위하여 대용량의 컨텐츠 파일들을 주고받으며 공유한다. 특별히 중앙의 집중된 관리서버가 없는 Access Grid환경에서는 컨텐츠의 위치추적의 어려움, 부재, 병목 등의 현상이 발생하는데 이를 본 논문에서 1. 중앙 Hybrid서버의 구현 2. 집중컨텐츠의 거점노드복제 3. 중요컨텐츠의 24시간 공유보장 등의 기법으로 해결방안을 제안하였다. 그리고 이에 대한 효율성을 시뮬레이션 자료로 증명하였다.

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Buffer Policy based on High-capacity Hybrid Memories for Latency Reduction of Read/Write Operations in High-performance SSD Systems

  • Kim, Sungho;Hwang, Sang-Ho;Lee, Myungsub;Kwak, Jong Wook;Park, Chang-Hyeon
    • Journal of the Korea Society of Computer and Information
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    • v.24 no.7
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    • pp.1-8
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    • 2019
  • Recently, an SSD with hybrid buffer memories is actively researching to reduce the overall latency in server computing systems. However, existing hybrid buffer policies caused many swapping operations in pages because it did not consider the overall latency such as read/write operations of flash chips in the SSD. This paper proposes the clock with hybrid buffer memories (CLOCK-HBM) for a new hybrid buffer policy in the SSD with server computing systems. The CLOCK-HBM constructs new policies based on unique characteristics in both DRAM buffer and NVMs buffer for reducing the number of swapping operations in the SSD. In experimental results, the CLOCK-HBM reduced the number of swapping operations in the SSD by 43.5% on average, compared with LRU, CLOCK, and CLOCK-DNV.

Semantic Cloud Resource Recommendation Using Cluster Analysis in Hybrid Cloud Computing Environment (군집분석을 이용한 하이브리드 클라우드 컴퓨팅 환경에서의 시맨틱 클라우드 자원 추천 서비스 기법)

  • Ahn, Younsun;Kim, Yoonhee
    • KIPS Transactions on Computer and Communication Systems
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    • v.4 no.9
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    • pp.283-288
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    • 2015
  • Scientists gain benefits from on-demand scalable resource provisioning, and various computing environments by using cloud computing resources for their applications. However, many cloud computing service providers offer their cloud resources according to their own policies. The descriptions of resource specification are diverse among vendors. Subsequently, it becomes difficult to find suitable cloud resources according to the characteristics of an application. Due to limited understanding of resource availability, scientists tend to choose resources used in previous experiments or over-performed resources without considering the characteristics of their applications. The need for standardized notations on diverse cloud resources without the constraints of complicated specification given by providers leads to active studies on intercloud to support interoperability in hybrid cloud environments. However, projects related to intercloud studies are limited as they are short of expertise in application characteristics. We define an intercloud resource classification and propose semantic resource recommendation based on statistical analysis to provide semantic cloud resource services for an application in hybrid cloud computing environments. The scheme proves benefits on resource availability and cost-efficiency with choosing semantically similar cloud resources using cluster analysis while considering application characteristics.

A PRICING METHOD OF HYBRID DLS WITH GPGPU

  • YOON, YEOCHANG;KIM, YONSIK;BAE, HYEONG-OHK
    • Journal of the Korean Society for Industrial and Applied Mathematics
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    • v.20 no.4
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    • pp.277-293
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    • 2016
  • We develop an efficient numerical method for pricing the Derivative Linked Securities (DLS). The payoff structure of the hybrid DLS consists with a standard 2-Star step-down type ELS and the range accrual product which depends on the number of days in the coupon period that the index stay within the pre-determined range. We assume that the 2-dimensional Geometric Brownian Motion (GBM) as the model of two equities and a no-arbitrage interest model (One-factor Hull and White interest rate model) as a model for the interest rate. In this study, we employ the Monte Carlo simulation method with the Compute Unified Device Architecture (CUDA) parallel computing as the General Purpose computing on Graphic Processing Unit (GPGPU) technology for fast and efficient numerical valuation of DLS. Comparing the Monte Carlo method with single CPU computation or MPI implementation, the result of Monte Carlo simulation with CUDA parallel computing produces higher performance.

Design and Evaluation of Hybrid Tag Interface (하이브리드 태그 인터페이스 디자인 및 평가)

  • 윤형민;이창수;신현구;권오영;손영우;한탁돈
    • Journal of KIISE:Software and Applications
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    • v.31 no.11
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    • pp.1483-1495
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    • 2004
  • Recently, new computing technologies are emerging from various life environments, as a result of the spread of network environments and the advent of new computing devices. This trend in computing technology is called "Ubiquitous computing" and is being developed to provide a convenient lifestyle through the dynamic integration of physical objects and digital information. The hybrid tag interface suggested in this paper is a usage model that integrates widely used image codes and recently applied RFIDs in various applications. On the basis of this concept, we eventually designed five different models such as Dual, Partial, Relative, Rebind and Discrete types according to their interrelation. In this paper, the characteristics of tag interfaces in the form of image codes and RFIDs are analyzed and the hybrid tag interface is proposed here for more efficient and convenient interface.