Automated collaborative filtering is on the verge of becoming a popular technique to reduce overloaded information as well as to solve the problems that content-based information filtering systems cannot handle. In this paper, we describe three different algorithms that perform collaborative filtering: GroupLens that is th traditional technique; Best N, the modified one; and an algorithm that uses clustering. Based on the exeprimental results using real data, the algorithm using clustering is compared with the existing representative collaborative filtering agent algorithms such as GroupLens and Best N. The experimental results indicate that the algorithms using clustering is similar to Best N and better than GroupLens for prediction accuracy. The results also demonstrate that the algorithm using clustering produces the best performance according to the standard deviation of error rate. This means that the algorithm using clustering gives the most stable and the best uniform recommendation. In addition, the algorithm using clustering reduces the time of recommendation.

Workflow means the automation of a business process, in which documents, information or tasks are transferred among participants for business action according to a set of procedural rules, and workflow management system is a system which defines, creates and manages the execution of workflow running one or more workflow engines. In this research, necessity of standardizing current workflow systems is recognized, and problems such as interoperability of current systems, dynamic adaptation to changing business environment and lacking of assessment, management and auditing of business processes are analyzed so that the design and implementation of a workflow system is focused on to offer a solution to the problems. The system is designed and implemented to change dynamically on Run-Time the processes definition defined on Build-Time, and interoperability is enabled by developing workflow engine and related modules based on the WfMC specifications and APIs.

Existing internet auction systems have adopted the form which gives a win to the auction bidder who proposes the top bid price for the goods posted on the auction board. But they haven't been satisfying the automatical one-step processing for user's convenience because they must require continuous care of user for bidding and checking as well as neglecting the convenience of user interface while participating in the electronic bidding system. The AuctionBot system of Michigan Univ. is known as the representative internet auction system. It has merit allowing the various kids of bidding. But it does not support automatic a process which can replaces what user has to do using an agent. To improve this kind of user interface, we propose an automatic bidding price strategy algorithm which composes the auction system using agent and design for auto-bidding system using agent so that I can replace user's bidding activity. This mechanism gives an auction system the efficient bidding price strategy.

With wide spending the Internet and Web techniques, we have recognized the necessary and commercial-value of electronic commerce system. Electronic commerce(EC) means the whole economical activities based on electronic medium. Both scalability and flexibility are fundamental attributes of EC system and interoperability among heterogeneous systems must be supported. So, for successful a developing of EC system, it is necessary to apply the CBD (Component Based Development) based on component assembling and customization. In this paper, we propose the method for identifying and specifying the components to construct the component based electronic commerce system. To do, we define the component/system architecture specified on EC domain, identified and classified the EC components with hierarchy relationship. Also, we suggested the specification notation and some examples.

Electronic commerce using internet is rapidly increasing a method to introduce and sell goods. persons who buy products in electronic commerce prefer to make interactive communications by multi users about products rather than show product informations. Reserved interactive transaction system for electronic commerce is electronic commerce system that is able to make a real communication buyers and customers. In this paper, e intend to design and implement reserved interactive transaction system for electronic commerce. it is efficiently used in middle and samll transaction system and able to make similar applications to sell and negotiate products for commercial transaction.

현재 대다숭의 전자 상거래 시스쳄은 수요자 및 공급자에 많은 부하를 주고 있다. 본 논문은 이러한 문제점을 해결하기 위하여 사례 기반의 추론을 이용한 판매 지원 에이전트를 제안한다. 먼저, 본 논문은 상품 정보 수집 에이전트, 색인 구성 에이전트, 판매 지원 에이전트, 검색엔진 등으로 구성된 다중 에이전트 시스템의 설계 방안을 제안하고 판매 지원 에이전트가 사용자의 취향을 알아내고 이를 흥정과정에 적용할 수 있도록 사례 기반의 지능형 에이전트를 설계한다. 또한, 프로토타입을 구현하여 판매지원 에이전트가 사례기반 추론 방법의 학습을 통하여 고객의 나이, 직업, 학력, 드에 따라 고객의 취향에 맞는상품 정보만을 빠르게 검색하는 과정을 보인다.

Mobile agents based e-commerce system has many advantage than traditional e-commerce-information gathering on goods, price settlement and payment, delivery of the goods purchased, and so on. However, due to the security vulnerability that stems from mobile agent's mobility, mobile agents based e-commerce system has additional security problems. Therefore, in order to do e-commerce securely in th system, first of al the security issues on mobile agents must be addressed. It this paper, we propose a mobile agent transfer protocol that provides confidentiality and integrity of mobile agent in transit and mutual authentication for communicating hosts. We further show the security of the protocol against many possible attacks. Also, we suggest the location management mechanism of mobile agents based on the trust center. This mechanism is capable of finding their locations transparently and detecting mobile agent clones.

본 논문에서는 전자상거래 시스템에서 요구하는 상호운용성과 실시간 요구사항들을 지원할 수 있는 실시간 웹 미들웨이(RTWM Real-Time Web Middleware) 프레임워크를 제안한다. RTWM시스템은 전자상거래 시스템의 실시간 요구사항들을 지원하기 위해CORBA 객체 서비스 구조를 확장하여 이벤트 모니터, 실시간 스케줄러, 실시간 이벤트 서비스 등의 객체 컴포넌트를 포함하는 구조를 가진다. 특히, 본 논문에서는 전자상거래 사용자의 실시간 요구사항을 지원할 수 있는 실시간 이벤트 필터링을 제공하는 것에 중점을 두었다. 사용자로부터 시간적 제약조건과 원하는 이벤트 정보를 입력받아 QoS저장소에 저장하고, 실시간 이벤트가 발생하며RTFA(Real-Time Fitering Agent)를 통해 소비자가 원하는 이벤트를 필터링하여 제공하게 된다. 이로써 사용자는 보다 높은 서비스를 제공받게 되고 이 과정을 통해 전체적인 네트워크 트래픽이 감소되는 효과를 얻을 수 있다.

전자상거래가 활성화됨에 따라 다양한 지불시스템이 연구되고, 상용화되고 있다. 고객 확보 차원에서 점차 보편화되고 있는 기존의 로열티는 지불 수단이라기보다는 고객 서비스의 일종으로 볼 수 있다. 그러나 본 논문에서 제안하는 로열티 시스템은 로열티 즉, 보너스 포인트, 개념에 화폐 기능과 보안 체계를 지원하고, 각 상점마다의 개별적인 로열티 운영이 아닌 포괄적인 활용을 가능하게 함으로써 전자지불시스템으로서의 력할을 제공할 수 있다. 본 논문에서는 이러한 로열티시스템의 구조를 소개하고 지불시스템으로 활용할 수 있는 특성인 보안체계의 익명성에 중점을 두어 논의한다.

Recently, many researchers have tried to establish EC framework EC framework for automated contract and brokerage using agent technologies in electronic commerce. Traditional researches, however, often enforced the user's participations during the automated brokerage process of agents an did not supported the procedures and methodologies for satisfying various user's requirements. In this paper, we propose a brokerge framework based on multi-agent to overcome the defects of the previous researches. For the optimal brokerage, the proposed framework is divided into tow layers, which are called competition layer and constraint satisfaction layer. The Agents process behaviors of brokerage through two layers accroding to th proposed message driven communication protocol. W also apply CSP (Constraint Satisfaction Problems) techniques to brokerage process to satisfy various preferential requirements from the user. That is, e model the relationship between buyer agents and seller agents using CSP and propose efficient CSP models for the optimal brokerage as the types of brokerage. Finally, e implemented prototype systems applying the proposed framework and showed the efficiency of he proposed framwork with the experimental results.

인터넷상에서의 상거래가 활성화됨에 따라 상거래 대상 품목도 그 종류가 다양화되어지고 있고 이용자 층도 확대되어 가고 있다. 이로 인해 인터넷이나 전자상거래에 익숙해 있지 않은 많은 사용자들은 자신이 필요로 하는 상품 혹은 그것을 취급하는 상점을 찾기 위해 많은 노력고 시간이 요구되어진다. 이러한 배경으로 에이전트라는 지응형 소프트웨어를 기반으로 한 상점 및 상품검색 등이 중요한 이슈로 대두되고 있다. 본 논문에서는 이러한 에이전트 기반의 지능형 전자상거래를 가능하게 하기 우해서 반드시 필요한 온토로지 서버의 구축과 그러한 서버에 등록되어져 있는 은토로지를 기반으로 한 개인 적응형 상품검색기능을 설계 구현하였다. 구현하였다.

In the operating of electronic commerce system, the information about consumer purchasing intention to product through e-mail has caused the problems in the management aspects. These are the using of information again and response to the situations promptly in consumer purchasing intension, etc. Moreover, it has brought out the issues timely to operate the electronic commerce system strategically with reapplication of consumer intention information. In this studies, the agent system AWEC(Agent Windows for EC) was proposed as an alternative paln, which charges of he getting and transmitting information of consumers intension in the electronic commerce system. In this proposed AWEC, the functional structure and working allocation were executed. And also eh performance of the proposed system is analyzed and evaluated through experiment.

Since the advance of WWW, internet related fields have been growing very rapidly. Especially, the development of electronic commerce ares have changed even or life style. This paper is about the design and implementation of an internet auction system, which is considered as on of the most attractive internet services. An internet auction system has more complex processes compared with other electronic commerce systems. In auction systems, bids and a successful bid are required in trading all goods. In this paper, I designed and implemented all processes of an internet auction system, in which a bid tracing systems is included for the first time. The bid tracing system is implemented using only HTTP in maintain compatibility in WWW environment. I also used th JAVA blocking concept to simulate two-way communication. The proposed system is implemented on Windows NT environment using JAVA, ASP, and the Oracle database.

전자상거래가 활성화되면서 인터넷을 이용한 상품의 구매가 점점 증가하고 있다. 현재 전자상거래에 이용되는 대부분의 상품은 하드웨어가 주를 이루고 있다. 전자파일 형태의 상품 즉, 디지털 상품의 온라인 판매는 물류비용이 없고, 상품의 검색이용이하며, 한시적으로 사용해 본 후 구입할 수 있는등의 많은 장점을 가지고 있지만 불법 복제 문제 때문에 혀재 전자상거래에서는기피 상품으로 취급받고 있다. 디지털 소프트웨어 상품의 불법 복제 문제는 상용권 관리 기술의 부재가 가장 큰 이유중이 하나니 . 현재 이루어지고 있는 전자상거래는 사용권 부여 대상의 식별 방법이 없고, 대상의 이동 방지가 불가능하고, 해킹 방지가 미비하며, 기타 전자상거래 구조가 미완성되어 사용권 관리상에 많은 문제젬을 드러내고 있다. 본 논문에서는 전자상거래 상에서 소프트웨어 상품의 유통을 활성화 할 수 있는 새로운 사용권 관리 기술인 동적 사용권 관리(DLCC: Dynamic License Control)기술을 이용하여 디지털 상품의 유통을 활성화 할 뿐 아니라 불법 복제를 막을 수 있는 디지털 소프트웨어 상품의 상품 작성 시스템의 설계 및 구현을 제안한다.을 제안한다.