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Our mechanism's effectivity is inside a relentless fraction of the a posteriori optimally efficient solution. Our mechanism's technical core is a variant of the online weighted bipartite matching downside the place unlike prior variants through which one randomizes edge arrivals or bounds edge weights, we could revoke beforehand dedicated edges. Further, it bounds the earnings of speculators who are in the game to acquire the cancellation charges. Our model permits the seller to cancel at any time any reservation made earlier, during which case the holder of the reservation incurs a utility loss amounting to a fraction of her worth for the reservation and may additionally receive a cancellation payment from the seller. They nonetheless hold if we change items with parts of a matroid and matchings with independent sets, or if all bidders have additive value for a set of items. A vendor will show a set of slots at some point T sooner or later. Many advertisers (bidders) use Internet programs to purchase show advertisements on publishers’ webpages or on conventional media corresponding to radio, Tv and newsprint.
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发表于 2023-2-19 05:36:13
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