Editing Auction (section)

===Winner selection===

The winner selection in most auctions selects the best bid. [[Unique bid auction]]s offer a special winner selection:<ref>{{cite journal |last1=Costa-Gomes |first1=Miguel A. |last2=Shimoji |first2=Makoto |title=Theoretical approaches to lowest unique bid auctions |journal=Journal of Mathematical Economics |date=May 2014 |volume=52 |pages=16–24 |doi=10.1016/j.jmateco.2014.02.011}}</ref> the winner is the bidder with the lowest unique bid. The [[Chinese auction]] selects a winner partially based on randomness.<ref name="chinese"/>

The final price for the selected winner is not always conducted according to their final bid. In the case of the second-price ruling as in a [[Vickrey auction]], the final price for the winner is based on the second bidder's price. A [[Proxy bid]] is a special case of second-price ruling used by [[eBay]], where a predefined increment is added to the second highest bid in response to a yet higher bid.

Auctions with more than one winner are called '''multi-winner auctions'''.<ref>{{cite journal |last1=Zhang |first1=Wen-zhu |last2=Wang |first2=Ling-yun |title=Dynamic spectrum allocation based on one-band multi-winner auction |journal=Journal on Communications |date=2012 |volume=2012-02 |url=http://en.cnki.com.cn/Article_en/CJFDTotal-TXXB201202000.htm}}</ref> [[Multiunit auction]], [[Combinatorial auction]], [[Generalized first-price auction]] and [[Generalized second-price auction]] are multi-winner auctions.