• 제목/요약/키워드: Agent Model

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홈 네트워크 응용을 위한 Multi Agent System (MAS) 프레임워크 (Multi Agent System (MAS) Framework for Home Network Application)

  • 장인훈;심귀보
    • 한국지능시스템학회논문지
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    • 제17권1호
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    • pp.80-85
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    • 2007
  • 홈네트워크 시스템의 본격적인 보급과 함께 가정용서비스 로봇의 최근 연구 성과들은 인간과 지능로봇이 가정에 공존하며 서로 의사소통을 할 수 있는 시대가 가까운 미래에 현실화 될 수 있음을 보여주고 있다. 한편 가정의 환경적인 특징은 open이기 때문에 그러한 환경에 적응하고 주어진 임무를 수행하는 데는 단일 로봇 또는 단일 홈서버보다는 로봇을 포함하는 홈네트워크 시스템 내의 여러 장치들이 어울려 분산처리를 수행하는 multi-agent 시스템이 일반적으로 더 좋다고 알려져 있다. 따라서 본 논문은 홈네트워크 시스템을 가진 가정에서 필요한 agent들을 정의하기 위해 framework 모델을 구축하고 각 agent 간의 통신 protocol architecture를 제시한다. 이를 위해 로봇 또는 홈서버의 단일 지능이나 기능보다는 그 안에 존재하는 복수개의 agent instance들의 집합으로서 agent를 정의하고, 각 agent 내외에서 agent들 사이의 협력(cooperation)과 타협(negotiation)을 통해 환경과 적응하는 방법 및 사람과 교감(interactive)하는 방법을 제시한다.

기업소모성자재(MRO) 관련 e-Marketplace의 경쟁구조와 비즈니스 모델에 관한 연구 (A Study on the Competitive Structure and Business Models of MRO e-Marketplace)

  • 안종수
    • 통상정보연구
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    • 제7권4호
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    • pp.117-134
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    • 2005
  • B2B transaction was expected to dominate in the global market and thus many e-marketplaces have been built since 1999 in Korea. However, only a few e-marketplaces are thriving and the future of B2B e-marketplaces except MRO area seem to be uncertain. This paper explores why B2B transactions only in MRO area are rapidly increasing and examines the competing structure and business models of MRO e-marketplace. Business models of MRO e-marketplaces are various among different countries. However, they can be classified as three business models:information portal model, purchasing agent model, open market model. It is not easy to answer which business model is most competitive because each models have their own advantages and functions. Information portal model can be easily applied for the e-marketplace which operates off-line enterprises. Purchasing agent model is favorable to the e-marketplaces which has already obtained buyers and sellers. Open market model is desirable to the e-marketplace which has excess to global market.

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Applicable SIB에 의한 IMT-2000 분산 망관리 에이전트의 인터페이스 스펙 모델링 (Interface Specification Modeling for Distributed Network Management Agent of IMT-2000 Based on Applicable Service Independent Building Blocks)

  • 박수현
    • 한국IT서비스학회지
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    • 제1권1호
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    • pp.119-139
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    • 2002
  • It is noteworthy that IMT -2000 communication network based on All-HP/AIN(Advanced Intelligent Network) should accomodate current and future wire/wireless AIN service easily through integration and gearing AIN construction elements. In this paper. Intelligent Farmer model(I-Farmer Model) and methodology are suggested in order to solve the several problems including standardization on implementation of Q3 interface in Telecommunication Management Network(TMN) agents which is caused by heterogeneous platform environment and future maintenance. Also this paper proposes ITI algorithm transforming the system which is designed by I-Farmer model to Interface Specification Model(ISM) applying the I-Farmer model. In addition to ITI algorithm. we suggest NTS(Node to SIB) algorithm converting entity node and ILB/OLB component in agent system designed by the I-Farmer model to SIB of AIN GFP(Global Functional Plane) and to ASIB for application program.

Digital Library System by Advanced Distributed Agent Platform

  • Cho, Young-Im
    • International Journal of Fuzzy Logic and Intelligent Systems
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    • 제4권1호
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    • pp.29-33
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    • 2004
  • I propose a personalized digital library system (PDLS) based on an advanced distributed agent platform. The new platform is developed by improving the DECAF (Distributed Environment-Centered Agent Framework) which is one of the conventional distributed agent development toolkits. Also, a mobile ORB (Object Request Broker), Voyager, and a new multi agent negotiation algorithm are adopted to develop the advanced platform. The new platform is for mobile multi agents as well as the distributed environment, whereas the DECAF is for the distributed and non-mobile environment. From the results of the simulation the searched time of PDLS is lower, as the numbers of servers and agents are increased. And the user satisfaction is four times greater than the conventional client-server model. Therefore, the new platform has some optimality and higher performance in the distributed mobile environment.

내한제 및 단열거푸집을 이용한 한중콘크리트의 모의구조체 적용에 관한 실험 연구 (An Experimental Study on the Mock-up Test of Cold Weather Concreting Using Anti-freeze Agent and Insulating Form)

  • 김경민;손성운;김기철;오선교;한천구
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 2002년도 봄 학술발표회 논문집
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    • pp.663-668
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    • 2002
  • In this paper, insulating effects and strength development of concrete placed at mock up model structure are discussed using anti freezing agent and insulating forms. According to test results, concrete containing 8% of anti freezing agent shows lower freezing temperature, earlier setting time and higher strength development than plain concrete. As for the temperature history of mock up structures, when plain concrete is placed at euro form, the temperature drops to -4${\circ}$ before early 24 hours, and when concrete containing anti freeze agent at euro form, it to -3${\circ}$ before early 24 hours. Nevertheless, when concrete containing anti freeze agent is placed at insulating form, it does not go below zero, and the concrete containing anti freeze agent enhances higher strength development.

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EMTP-MODELS를 이용한 Multi-Agent System 기반의 자동 재폐로 계전 알고리즘 구현 (Implementation of Auto-reclosing Relay Algorithm based on Multi-Agent System using EMTP-MODELS)

  • 이병현;여상민;이유진;김철환;성노규
    • 전기학회논문지
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    • 제57권1호
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    • pp.8-13
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    • 2008
  • This paper presents auto-reclosing algorithms with reference to power system stability based on MAS(Multi-Agent System). And this paper shows auto-reclosing algorithms considering power system stability. It includes the variable dead time, optimal reclosing, sequential reclosing, emergency extended equal-area criterion(EEEAC) algorithm, and modified EEEAC algorithm. This paper divides Auto-reclosing algorithms into respectively agents according to their tasks. A separated agent is merely a software entity that is situated in some environment and is able to autonomously react to changes in the environment. And all the simulations in this parer were tested by EMTP MODELS.

지역적 정보 공유를 활용하는 멀티 에이전트 시스템 기반의 공급사슬 관리 아키텍쳐 (A Multi-agent Architecture for Coordination of Supply Chains with Local Information Sharing)

  • 안형준;박성주
    • Asia pacific journal of information systems
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    • 제14권4호
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    • pp.49-70
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    • 2004
  • Multi-agent technology is being regarded as one of the promising technologies for today's supply chain management because of its desirable features such as autonomy, intelligence, and collaboration. This paper suggests a multi-agent system architecture with which companies can improve the efficiency of their supply chains by collaborative operation. Reflecting the practical difficulties of collaboration in complex supply chains, the architecture allows agent systems to share information with only neighboring companies for the coordinated operation. The suggested architecture is elaborated with a collaboration model based on Petri-net, conversation models for communication, and internal behavior models of each agent. A simulation experiment was performed for the evaluation of the suggested architecture. The result implies that when the estimation of market demand is higher than a certain level, the suggested architecture can be beneficial.

A Multi-Agent Negotiation System with Negotiation Models Changeable According to the Bargaining Environment

  • Ha, Sung-Ho;Kim, Dong-Sup
    • Journal of Information Technology Applications and Management
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    • 제16권1호
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    • pp.1-20
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    • 2009
  • Negotiation is a process of reaching an agreement on the terms of a transaction. such as price, quantity, for two or more parties. Negotiation tries to maximize the benefits for all parties concerned. instead of using human-based negotiation. the e-commerce environment provides such an environment as adopting automated negotiation. Thus. choosing agent technology is appropriate for an automatic electronic negotiation platform. since autonomous software agents strive for the best deal on behalf of the human participants. Negotiation agents need a clear-cut definition of negotiation models or strategies. In reality, most bargaining systems embody nearly one negotiation model. In this article. we present a mobile agent negotiation system with reusable negotiation strategies that allows agents to dynamically embody a user's favorite negotiation strategy which can be preinstalled as a component in the system. We develop a prototype system, which is fully implemented in compliance with FIPA specifications, and then. describe the benefits of using the system.

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Computer Aided Diagnosis System based on Performance Evaluation Agent Model

  • Rhee, Hyun-Sook
    • 한국컴퓨터정보학회논문지
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    • 제21권1호
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    • pp.9-16
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    • 2016
  • In this paper, we present a performance evaluation agent based on fuzzy cluster analysis and validity measures. The proposed agent is consists of three modules, fuzzy cluster analyzer, performance evaluation measures, and feature ranking algorithm for feature selection step in CAD system. Feature selection is an important step commonly used to create more accurate system to help human experts. Through this agent, we get the feature ranking on the dataset of mass and calcification lesions extracted from the public real world mammogram database DDSM. Also we design a CAD system incorporating the agent and apply five different feature combinations to the system. Experimental results proposed approach has higher classification accuracy and shows the feasibility as a diagnosis supporting tool.

Adaptive and optimized agent placement scheme for parallel agent-based simulation

  • Jin, Ki-Sung;Lee, Sang-Min;Kim, Young-Chul
    • ETRI Journal
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    • 제44권2호
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    • pp.313-326
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    • 2022
  • This study presents a noble scheme for distributed and parallel simulations with optimized agent placement for simulation instances. The traditional parallel simulation has some limitations in that it does not provide sufficient performance even though using multiple resources. The main reason for this discrepancy is that supporting parallelism inevitably requires additional costs in addition to the base simulation cost. We present a comprehensive study of parallel simulation architectures, execution flows, and characteristics. Then, we identify critical challenges for optimizing large simulations for parallel instances. Based on our cost-benefit analysis, we propose a novel approach to overcome the performance constraints of agent-based parallel simulations. We also propose a solution for eliminating the synchronizing cost among local instances. Our method ensures balanced performance through optimal deployment of agents to local instances and an adaptive agent placement scheme according to the simulation load. Additionally, our empirical evaluation reveals that the proposed model achieves better performance than conventional methods under several conditions.