地壳
发表于 2025-3-23 11:04:04
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occurrence
发表于 2025-3-23 15:16:33
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Abjure
发表于 2025-3-23 20:23:28
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意见一致
发表于 2025-3-23 23:52:21
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壮丽的去
发表于 2025-3-24 04:51:12
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absorbed
发表于 2025-3-24 06:57:48
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规章
发表于 2025-3-24 12:17:19
Inapproximability Results for Combinatorial Auctions with Submodular Utility Functions,o as to maximize the sum of the utilities of the players (i.e., the social welfare). In the case when the utility of each player is a monotone submodular function, we prove that there is no polynomial time approximation algorithm which approximates the maximum social welfare by a factor better than
BIAS
发表于 2025-3-24 18:11:19
New Algorithms for Mining the Reputation of Participants of Online Auctions,omer e-commerce. Confident reputation rating system is an important factor in managing risk and building customer satisfaction. Unfortunately, most online auction sites employ a very simple reputation rating scheme that utilizes user feedbacks and comments issued after committed auctions. Such schem
FUSC
发表于 2025-3-24 22:31:58
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initiate
发表于 2025-3-25 00:09:01
Walrasian Equilibrium: Hardness, Approximations and Tractable Instances,icipant is interested in only one subset of commodities. Chen et al. showed that it is NP-hard to decide the existence of a Walrasian equilibrium for a single-minded auction and proposed a notion of approximate Walrasian equilibrium called relaxed Walrasian equilibrium. We show that every single