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Our mechanism's efficiency is within a continuing fraction of the a posteriori optimally efficient solution. Our mechanism's technical core is a variant of the net weighted bipartite matching problem the place not like prior variants wherein one randomizes edge arrivals or bounds edge weights, we may revoke beforehand committed edges. Further, it bounds the earnings of speculators who're in the sport to acquire the cancellation charges. Our model permits the vendor to cancel at any time any reservation made earlier, by which case the holder of the reservation incurs a utility loss amounting to a fraction of her worth for the reservation and might also obtain a cancellation fee from the seller. They nonetheless hold if we replace objects with components of a matroid and matchings with independent sets, or if all bidders have additive value for a set of items. A seller will display a set of slots sooner or later T in the future. Many advertisers (bidders) use Internet techniques to purchase display advertisements on publishers’ webpages or on traditional media reminiscent of radio, Tv and newsprint.
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发表于 2023-3-25 13:03:59
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