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Our mechanism's efficiency is within a continuing fraction of the a posteriori optimally environment friendly solution. Our mechanism's technical core is a variant of the online weighted bipartite matching downside where unlike prior variants through which one randomizes edge arrivals or bounds edge weights, we might revoke previously committed edges. Further, it bounds the earnings of speculators who're in the sport to obtain the cancellation charges. Our mannequin allows the vendor to cancel at any time any reservation made earlier, wherein case the holder of the reservation incurs a utility loss amounting to a fraction of her worth for the reservation and may receive a cancellation price from the seller. They still hold if we change items with elements of a matroid and matchings with independent sets, or if all bidders have additive worth for a set of items. A vendor will display a set of slots sooner or later T sooner or later. Many advertisers (bidders) use Internet programs to purchase display ads on publishers’ webpages or on conventional media akin to radio, Tv and newsprint.
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发表于 2022-10-15 16:06:04
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