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作者：Johari, Ramesh; Weintraub, Gabriel Y.; Van Roy, Benjamin
作者单位：Stanford University; Columbia University
摘要：We analyze investment incentives and market structure under oligopoly competition in industries with congestion effects. Our results are particularly focused on models inspired by modern technology-based services such as telecommunications and computing services. We consider situations where firms compete by simultaneously choosing prices and investments; increasing investment reduces the congestion disutility experienced by consumers. We define a notion of returns to investment, according to ...
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作者：Chung, William; Fuller, J. David
作者单位：City University of Hong Kong; University of Waterloo
摘要：We present a modification to Dantzig-Wolfe decomposition of variational inequality (VI) problems that allows for approximation of the VI mapping in the subproblem. The approximation is parameterized by the most recent master problem solution, and it must satisfy two simple requirements. In an electronic companion (online appendix), we show that the proofs of convergence and other important properties go through with subproblem approximation. The approximation procedure is illustrated by an app...
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作者：Boyaci, Tamer; Oezer, Oezalp
作者单位：McGill University; University of Texas System; University of Texas Dallas
摘要：This paper investigates a capacity planning strategy that collects commitments to purchase before the capacity decision and uses the acquired advance sales information to decide on the capacity. In particular, we study a profit-maximization model in which a manufacturer collects advance sales information periodically prior to the regular sales season for a capacity decision. Customer demand is stochastic and price sensitive. Once the capacity is set, the manufacturer produces and satisfies cus...
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作者：Iida, Tetsuo; Zipkin, Paul
作者单位：Komazawa University; Duke University
摘要：We consider a serial supply chain with one supplier and one retailer. Each obtains some demand forecast information, which may be shared or not. We investigate the members' benefits from sharing information. The forecasts follow a variant of the Martingale model of forecast evolution (MMFE). We construct a simple transfer-payment scheme to align the players' incentives with that of the overall system. The main finding is that, unless the players' incentives are aligned in this way, sharing inf...
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作者：Honhon, Dorothee; Gaur, Vishal; Seshadri, Sridhar
作者单位：University of Texas System; University of Texas Austin; Cornell University
摘要：We present an efficient dynamic programming algorithm to determine the optimal assortment and inventory levels in a single-period problem with stockout-based substitution. In our model, total customer demand is random and comprises fixed proportion of customers of different types. Customer preferences are modeled through the definition of these types. Each customer type corresponds to a specific preference ordering among products. A customer purchases the highest-ranked product, according to h...
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作者：Zhang, Hao; Nagarajan, Mahesh; Sosic, Greys
作者单位：University of Southern California; University of British Columbia
摘要：In this paper, we examine a supply chain in which a single supplier sells to a downstream retailer. We consider a multiperiod model with the following sequence of events. In period t the supplier offers a contract to the retailer, and the retailer makes her purchasing decision in anticipation of the random demand. The demand then unravels, and the retailer carries over any excess inventory to the next period (unmet demand is lost). In period t + 1 the supplier designs a new contract based on h...
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作者：Bassamboo, Achal; Randhawa, Ramandeep S.
作者单位：Northwestern University; University of Southern California
摘要：We consider queueing systems in which customers arrive according to a Poisson process and have exponentially distributed service requirements. The customers are impatient and may abandon the system while waiting for service after a generally distributed amount of time. The system incurs customer-related costs that consist of waiting and abandonment penalty costs. We study capacity sizing in such systems to minimize the sum of the long-term average customer-related costs and capacity costs. We ...
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作者：Huggins, Eric Logan; Olsen, Tava Lennon
作者单位：Fort Lewis College; University of Auckland
摘要：We consider a single-item, periodic-review inventory control problem in which discrete stochastic demand must be satisfied. When shortages occur, the unmet demand must be filled by some form of expediting; we allow a very general form for the cost structure of expediting. We explicitly consider the case where expedited production is allowed to produce up to a positive inventory level. We also consider the case where expedited production beyond the deficit is not permitted; an alternate applica...
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作者：Atar, Rami; Giat, Chanit; Shimkin, Nahum
作者单位：Technion Israel Institute of Technology
摘要：We consider a multiclass queueing system with multiple homogeneous servers and customer abandonment. For each customer class i, the holding cost per unit time, the service rate, and the abandonment rate are denoted by c(i), mu(i), and theta(i), respectively. We prove that under a many-server fluid scaling and overload conditions, a server-scheduling policy that assigns priority to classes according to their index c(i)mu(i)/theta(i) is asymptotically optimal for minimizing the overall long-run ...
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作者：Hora, Stephen C.
作者单位：University of Southern California; University of Southern California
摘要：It is shown how infinite sequences of densities with defined properties can be used to evaluate the expected performance of mathematical aggregation rules for elicited densities. The performance of these rules is measured through the average variance, calibration, and average Brier score of the aggregates. A general result for the calibration of the arithmetic average of densities from well-calibrated independent experts is given. Arithmetic and geometric aggregation rules are compared using s...
