Editing Auction (section)

===Structure of a bid===

In usual auctions like the English one, bids are prices. In Dutch and Japanese auctions, the bids are confirmations. In a version of the [[Brazilian auction]], bids are numbers of units being traded. Structure elements of a bid are called attributes. If a bid is one number like price, it is a '''single-attribute auction'''. If bids consists of multiple-attributes, it is a [[multi-attribute auction]].<ref>{{cite journal |last1=Pla |first1=Albert |last2=López |first2=Beatriz |last3=Murillo |first3=Javier |last4=Maudet |first4=Nicolas |title=Multi-attribute auctions with different types of attributes: Enacting properties in multi-attribute auctions |journal=Expert Systems with Applications |date=August 2014 |volume=41 |issue=10 |pages=4829–4843 |doi=10.1016/j.eswa.2014.02.023|hdl=10256/9601 |hdl-access=free }}</ref><ref>{{cite journal |last1=Huang |first1=He |last2=Liu |first2=Liming |last3=Parker |first3=Geoffrey |last4=Tan |first4=Yinliang (Ricky) |last5=Xu |first5=Hongyan |title=Multi-Attribute Procurement Auctions in the Presence of Satisfaction Risk |journal=Production and Operations Management |date=26 December 2018 |volume=28 |issue=5 |pages=1206–1221 |doi=10.1111/poms.12979|doi-access=free }}</ref>

A [[Yankee auction]] is a single-attribute multiunit auction running like a Dutch auction, where the bids are the portions of a total amount of identical units.<ref>{{cite web|title=Yankee Auction|url= http://www.gametheory.net/dictionary/Auctions/YankeeAuction.html|website=Game Theory .net}}</ref><ref>{{cite web|title=Cigar Auctioneer|url=https://www.cigarauctioneer.com/help/auction_help_formats.cfm}}</ref><ref>{{cite web|title=E-Auctions in Sourcing: Yankee Auction|website=eSourcing {{!}} Wiki|url=http://www.esourcingwiki.com/index.php/E-Auctions_in_Sourcing#Yankee_Auction|access-date=2020-02-07|archive-date=2020-01-27|archive-url=https://web.archive.org/web/20200127200654/http://www.esourcingwiki.com/index.php/E-Auctions_in_Sourcing#Yankee_Auction}}</ref> The amount of auctioned items is firm in a Yankee auction unlike a Brazilian auction. The portions of the total amount, bidders can bid, are limited to lower numbers than the total amount. Therefore, only a portion of the total amount will be traded for the best price and the rest to the suboptimal prices.