tailieunhanh - Multiagent-Systems 2010 Part 14

Tham khảo tài liệu 'multiagent-systems 2010 part 14', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Auctions and Electronic Markets 383 Auction Protocol Description Strategy Ascending Bid or English auction The price is successively raised until at least one bidder remains. This can be done by having an auctioneer announce prices or by having bids submitted electronically with the current best bid posted. The essential feature of the English auction is that at any point in time each bidder knows the current best bid. Antiques art work and houses are sometimes sold using this type of auction. The agent s dominant strategy the best thing to do irrespective of what the others do is to bid a small amount more than the current highest bid and stop when the user s valuation is reached. For example in Yahoo auctions autonomic bidding allows users to input their maximum bid and an agent will bid incrementally when it is necessary to win the auction. Descending Bid or Dutch auction The agent s dominant strategy the best thing to do irrespective of what the others do Gibbons is to bid a small amount more than the current highest bid and stop when the user s valuation is reached. For example in Yahoo auctions autonomic bidding allows users to input their maximum bid and an agent will bid incrementally when it is necessary to win the auction. Strategically equivalent to First-Price Sealed -Bid Tirsĩ-Prícp Sealed-Bid FPSB auction Each bidder independently submits a single bid without knowledge of what bids is submitted by other participants. The object is sold to the bidder who makes the highest bid. This type of auction is used in auctioning mineral rights in government-owned land and is sometimes used is the sales of artwork and real estate. Of greater quantitative significance is the use of sealed bid tendering for government procurement contracts - that is competing contractors submit prices and the lowest bidder wins and receives her price for fulfilling the contract. The dominant strategy in First-Price Sealed -Bid of complete information is to bid the second highest .