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作者：Podinovski, Victor V.; Chambers, Robert G.; Atici, Kazim Baris; Deineko, Iryna D.
作者单位：Loughborough University; University System of Maryland; University of Maryland College Park; Hacettepe University; University of Warwick
摘要：We present a unifying linear programming approach to the calculation of various directional derivatives for a very large class of production frontiers of data envelopment analysis (DEA). Special cases of this include different marginal rates, the scale elasticity, and a spectrum of partial and mixed elasticity measures. Our development applies to any polyhedral production technology including, to name a few, the conventional variable and constant returns-to-scale DEA technologies, their extens...
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作者：Fan, Weiwei; Hong, L. Jeff; Nelson, Barry L.
作者单位：Chinese Academy of Sciences; University of Science & Technology of China, CAS; City University of Hong Kong; City University of Hong Kong; Northwestern University
摘要：Many procedures have been proposed in the literature to select the simulated alternative with the best mean performance from a finite set of alternatives. Among these procedures, frequentist procedures are typically designed under either the subset-selection (SS) formulation or the indifference-zone (IZ) formulation. Both formulations may encounter problems when the goal is to select the unique best alternative for any configuration of the means. In particular, SS procedures may return a subse...
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作者：Li, Qing; Yu, Peiwen; Wu, Xiaoli
作者单位：Hong Kong University of Science & Technology; Fudan University; South China University of Technology
摘要：We study joint replenishment and clearance sales of perishable goods under a general finite lifetime and a last-in-firstout (LIFO) issuing rule, a problem common in retailing. We show that the optimal policies can be characterized by two thresholds for each age group of inventory: a lower one and a higher one. For an age group of inventory with a remaining lifetime of two periods or longer, if its inventory level is below its lower threshold, then there is no clearance sales; if it is above it...
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作者：Giallombardo, Giovanni; Jiang, Houyuan; Miglionico, Giovanna
作者单位：University of Calabria; University of Cambridge
摘要：We consider the conflict-resolution problem arising in the allocation of commercial advertisements to television program breaks. Because of the competition-avoidance requirements issued by advertisers, broadcasters aim to allocate any pairs of commercials promoting highly conflicting products to different breaks. Hence, the problem consists of assigning commercials to breaks, subject to time capacity constraints, with the aim of maximizing a total measure of the conflicts among commercials ass...
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作者：Chen, Xin; Hu, Peng; Shum, Stephen; Zhang, Yuhan
作者单位：University of Illinois System; University of Illinois Urbana-Champaign; Huazhong University of Science & Technology; City University of Hong Kong
摘要：We analyze the joint inventory and pricing decisions of a firm when demand depends on not only the current selling price but also a memory-based reference price and customers are loss averse. The presence of reference price effect leads to a nonconcave one-period expected revenue in price and reference price. We introduce a transformation technique that allows us to prove under some mild assumptions the optimality of a reference-price-dependent base-stock list-price policy, which is characteri...
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作者：Bimpikis, Kostas; Ozdaglar, Asuman; Yildiz, Ercan
作者单位：Stanford University; Massachusetts Institute of Technology (MIT)
摘要：Recent advances in information technology have allowed firms to gather vast amounts of data regarding consumers' preferences and the structure and intensity of their social interactions. This paper examines a game-theoretic model of competition between firms that can target their marketing budgets to individuals embedded in a social network. We provide a sharp characterization of the optimal targeted advertising strategies and highlight their dependence on the underlying social network structu...
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作者：Zhang, Huanan; Shi, Cong; Chao, Xiuli
作者单位：University of Michigan System; University of Michigan
摘要：We develop the first approximation algorithm for periodic-review perishable inventory systems with setup costs. The ordering lead time is zero. The model allows for correlated demand processes that generalize the well-known approaches to model dynamic demand forecast updates. The structure of optimal policies for this fundamental class of problems is not known in the literature. Thus, finding provably near-optimal control policies has been an open challenge. We develop a randomized proportiona...
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作者：Arts, Joachim; Basten, Rob; Van Houtum, Geert-Jan
作者单位：Eindhoven University of Technology
摘要：We consider a single stock-point for a repairable item facing Markov modulated Poisson demand. Repair of failed parts may be expedited at an additional cost to receive a shorter lead time. Demand that cannot be filled immediately is backordered and penalized. The manager decides on the number of spare repairables to purchase and on the expediting policy. We characterize the optimal expediting policy using a Markov decision process formulation and provide closed-form necessary and sufficient co...
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作者：Cont, Rama; Duffie, Darrell; Glasserman, Paul; Rogers, Chris; Vega-Redondo, Fernando
作者单位：Imperial College London; Stanford University; Columbia University; University of Cambridge; Bocconi University
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作者：Kley, Oliver; Klueppelberg, Claudia; Reinert, Gesine
作者单位：Technical University of Munich; University of Oxford
摘要：We model the influence of sharing large exogeneous losses to the reinsurance market by a bipartite graph. Using Paretotailed claims and multivariate regular variation we obtain asymptotic results for the value-at-risk and the conditional tail expectation. We show that the dependence on the network structure plays a fundamental role in their asymptotic behaviour. As is well known in a nonnetwork setting, if the Pareto exponent is larger than 1, then for the individual agent (reinsurance company...
