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A knapsack auction is an auction in which several identical items are sold, and there are several bidders with different valuations interested in different amounts of items. The goal is to choose a subset of the bidders with a total demand, at most, the number of items and, subject to that, a maximum total value.
In some cases, this may be extremely helpful for bidders because the reserve needs to be met. For an example, suppose a property is coming up for auction and there is only one person interested in bidding for it in the room. The reserve has been set at $100,000, and this bidder is happy to buy it at $120,000. The bidding starts at $80,000.
An online auction (also electronic auction, e-auction, virtual auction, or eAuction) is an auction held over the internet and accessed by internet connected devices. [ 1 ] [ 2 ] [ 3 ] Similar to in-person auctions, online auctions come in a variety of types , with different bidding and selling rules.
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An online shop evokes the physical analogy of buying products or services at a regular "brick-and-mortar" retailer or shopping center; the process is called business-to-consumer (B2C) online shopping. When an online store is set up to enable businesses to buy from another businesses, the process is called business-to-business (B2B) online ...
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FedBid, Inc. is now known as Unison Marketplace Inc. Unison Marketplace is a privately held company based in Vienna, Virginia, that operates a full-service online marketplace designed to optimize how federal, state and local governments, and educational institutions purchase simple goods and services such as IT products, office supplies and lab equipment, through a reverse auction-based platform.
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