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The uniform-price auction does not, however, result in bidders bidding their true valuations as they do in a second-price auction unless each bidder has demand for only a single unit. A generalization of the Vickrey auction that maintains the incentive to bid truthfully is known as the Vickrey–Clarke–Groves (VCG) mechanism.
Auction chanting is a method of conducting live auctions frequently found in North America where it is practiced in English, Spanish, French and other languages. It is much less common outside North America, [ citation needed ] and the most notable exceptions within North America are auction houses with significant ties elsewhere in the world ...
Proxy bidding is an implementation of an English second-price auction used on eBay, in which the winning bidder pays the price of the second-highest bid plus a defined increment. It differs from a Vickrey auction in that bids are not sealed; the "current highest bid" (defined as second-highest bid plus bid increment) is always displayed.
A first-price sealed-bid auction (FPSBA) is a common type of auction. It is also known as blind auction. [1] In this type of auction, all bidders simultaneously submit sealed bids so that no bidder knows the bid of any other participant. The highest bidder pays the price that was submitted. [2]: p2 [3]
However, online auction sites, unlike live auctions, usually have an automatic bidding system which allows a bidder to enter their maximum acceptable bid. This is a hidden or proxy bid, known to the system, but not any other bidders; during the auction the actual bid is incremented only enough to beat the existing highest bid. For example, if ...
Another special case of a combinatorial auction is the combinatorial clock auction (CCA), which combines a clock auction, during which bidders may provide their confirmations in response to the rising prices, with a subsequantial sealed bid auction, in which bidders submit sealed package bids. The auctioneer uses the final bids to compute the ...
An English auction is an open-outcry ascending dynamic auction. It proceeds as follows. The auctioneer opens the auction by announcing a suggested opening bid, a starting price, or a reserve for the item on sale. Then the auctioneer accepts increasingly higher bids from the floor and sometimes from other sources, for example online or telephone ...
Concierge Auctions is a residential real estate company based in New York and Texas. It auctions properties to the highest bidder. [2] In November 2021, ...
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