• 한국전자거래학회지
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• 제7권2호
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• pp.55-68
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• 2002

Internet group buying systems have been widely used recently. In those systems, because the reserve price is provided by the buyer, the success rate can be decreased if the reserve price is set too low compared with the normal price. Otherwise, an unsuitable successful bid can be made if the reserve price is set too high based on inaccurate information. Likewise, the seller's providing too high a bid price can deteriorate his/her own successful bid rate, whereas a successful bid with too low a price may make no profit in the sale. Therefore, pricing agents that recommend adequate prices based on the past buying and selling history data can be helpful. In this paper, we propose two kinds of agents. One suggests reserve prices to buyers based on the past buying history database of the system. The other recommends bid prices to a seller based on the past bidding history data of the company using the cost accounting theory. Through performance experiments, we show that the successful bid rate can increase by preventing buyers from making unreasonable reserve prices. Also, we show that, for the seller, the rate of successful bids with appropriate profits can increase. Using the pricing agents, we design and implement an XML-based group buying system.

• Asia pacific journal of information systems
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• 제17권1호
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• pp.59-76
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• 2007

Information and Communication Technologies (ICT) changed our everyday business drastically. Business routines have been transformed to online activities. New theories and models were developed for the brand new online environment. For online negotiations, however, the research on new mechanisms is not enough, especially for bilateral distributive negotiations. A reserve price reporting mechanism (RPR) together with its extended version (ERPR) is proposed in this paper. The key improvement of reserve price reporting mechanisms is to let the negotiators report their reserve price to a third-party system before they actually start the negotiation. A prototype of this RPR system is developed and a lab experiment is conducted to test the performance of the two mechanisms compared with traditional direct bargaining (TDB) mechanism. The results of the experiment support that the reserve price report mechanisms proposed are more efficient than the traditional one in several dimensions including social welfare.

• Journal of Information Technology Applications and Management
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• 제12권1호
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• pp.141-155
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• 2005

It is very important that sellers provide reasonable reserve prices for auction items in internet auction systems. Recently, an agent has been proposed to generate reserve prices automatically based on the case similarity of information retrieval theory and the moving average of time series analysis. However, one problem of the previous approaches is that the recent trend of auction prices is not well reflected on the generated reserve prices, because it simply provides the bid price of the most similar item or an average price of some similar items using the past auction data. In this paper. in order to overcome the problem. we propose a method that generates reserve prices based on the moving average. the exponential smoothing, and the least square of time series analysis. Through performance experiments. we show that the successful bid rate of the new method can be increased by preventing sellers from making unreasonable reserve prices compared with the previous methods.

• 한국경영과학회지
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• 제9권2호
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• pp.9-14
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• 1984

The competitive bidding model with the reserve price has been studied by Riley and Samuelson. We extend their studies to the competitive model with the reserve price and the entry fee. First we present the bidder's optimal strategy, the winner's expected profit, the auctioner's expected revenue in the first-price sealed bidding model, and next those in the second-price sealed bidding model.

• 정보처리학회논문지D
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• 제9D권5호
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• pp.955-962
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• 2002

최근에 전자상거래가 보편화되면서 전자경매를 통한 거래가 급증하고 있다. 그러나, 기존 전자경매 시스템들은 낙찰 예정가 결정을 판매자에게만 의존하고 있으므로, 물품의 낙찰가가 낮게 결정되거나 유찰되는 경우가 많다. 본 논문에서는 이러한 문제점을 해결하고자, 과거의 경매 기록과 인터넷 전자상거래 사이트의 가격 정보로부터 사례 유사도를 적용하여 적합한 낙찰 예정가를 자동으로 생성하고 이를 판매자에게 추천하는 시스템을 제안한다. 성능실험 결과 추천된 낙찰 예정가를 사용할 경우 지나치게 높은 낙찰 예정가로 인한 유찰을 줄임으로써 경매 성공률이 향상될 뿐만 아니라, 물품에 대한 낮은 평가를 방지할 수 있음을 보인다. 또한, 본 논문에서는 낙찰 예정가 자동 생성에이전트를 이용하여 인터넷 경매 시스템을 설계 및 구현한다.

• 한국전자거래학회지
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• 제9권2호
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• pp.17-31
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• 2004

인터넷 경매 시스템에서는 물품의 판매자가 경매 물품에 적합한 낙찰 예정가를 제안하는 것이 매우 중요하다. 최근에 정보검색 이론의 사례 유사도에 기초하여 경매 물품의 낙찰 예정가를 자동으로 생성하는 에이전트가 연구되었다. 그러나, 이것은 과거의 경매 물품 전체를 대상으로 가장 유사한 사례의 낙찰가를 낙찰 예정가로 생성하므로, 최근의 추세를 반영한 가격을 생성하지 못하는 단점 이 있다. 본 논문에서는 이러한 문제점을 해결하고자 시계열 분석에서 사용하는 이동 평균을 이용하여 최근의 경매 자료에 높은 가중치를 부여하여 낙찰 예정가를 생성하는 방법을 제안한다. 성능 실험을 통하여, 새로운 방법 이 판매자가 경매 물품에 대하여 불합리한 낙찰 예정가를 제시하는 것을 방지함으로써 낙찰률을 높일 수 있음을 보인다.

• 한국경영과학회지
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• 제11권2호
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• pp.27-36
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• 1986

This paper deals with four types of multiple unit simultaneous auctions such as the discriminating. uniform-price, lowest accepted-price, and progressive auctions. These auctions have been studied by Vickrey, Ortega-Reichert, Herris and Raviv and so forth. In this paper, their studies are extended to the case with a reserve price and an entry fee, and then the equilibrium bidding strategy are presented. Further, those are analyzed with respect to the change of a reserve price, an entry fee, and the number of bidders and objects.

• 에너지공학
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• 제15권4호
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• pp.229-234
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• 2006

전기에너지는 저장성이 없기 때문에 부하의 불규칙적인 변화에 대한 실시간 대처가 어렵다. 그 중 전력 계통의 대규모 공급지장에 대비하여 안정적인 공급을 위해서 예비력을 운영하고 있다. 그러나 예비력을 운영함으로써 전력계통 전체에 경제적 손실이 발생하는데 이를 최소화하기 위해서는 적정예비력 확보와 적절한 가격보상이 필요하다. 본 논문에서는 예비력시장을 운영함으로써 발생하는 기회비용을 반영하여 에너지와 예비력 가격 설정방법을 제시하였다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2006년도 제37회 하계학술대회 논문집 A
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• pp.418-419
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• 2006

After electricity power industry restructuring, "Long term power development plan", setting up by government, is replaced by "Basic plan of electricity supply and demand". In this basic plan, one of the most important factors is assessment of appropriate capacity margin. The benefit of GENCO is decided by the market price, and the price is largely affected by the level of reserve margin. As a consequence, appropriate reserve margin is determined by market power. However, Cost Based Pool(CBP) is a limited competitive market, and government policy for supply and demand is very important factor or reserve margin determination. This paper points out issues about existing reserve margin assessment method which is used in basic plan and suggests improved assessment method. In the case study, capacity margin is calculated by proposed assessment method and result shows the advantages of suggested method.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1995년도 하계학술대회 논문집 B
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• pp.581-583
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• 1995

This paper presents a theory on the pricing and allocation of spinning reserve. It is shown in this paper, that it is possible to maintain system security with many participants each attempting to optimize their own benefit, through pricing incentive. Participant offers power consumption/generation and reserve contribution according to its price. And Price setter only distribute pricing signal to acquire system security. Participants induce disturbance on power system and they pay the penalty according to the size of disturbance. And they also offers some reserve capacity to earn reserve cost. In this scheme, the amount of data communication is very small.