| http://www.w3.org/ns/prov#value | - A method, comprising participating in a synthetic continuous double auction having contingent bidding on a plurality of heterogeneous item auctions, wherein a composite reverse auction, defined by a bid set including a first contingent bid on a first of the plurality of heterogeneous item auctions and a second contingent bid on a second of the plurality of heterogeneous item auctions, is ended whe
|
