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作者：Cominetti, Roberto; Correa, Jose; Larre, Omar
作者单位：Universidad de Chile
摘要：Flows over time provide a natural and convenient description for the dynamics of a continuous stream of particles traveling from a source to a sink in a network, allowing to track the progress of each infinitesimal particle along time. A basic model for the propagation of flow is the so-called fluid queue model in which the time to traverse an edge is composed of a flow-dependent waiting time in a queue at the entrance of the edge plus a constant travel time after leaving the queue. In a dynam...
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作者：Siebert, Johannes; Keeney, Ralph L.
作者单位：University of Bayreuth; Duke University
摘要：The quality of alternatives is crucial for making good decisions. This research, based on five empirical studies of important personally relevant decisions, examines the ability of decision makers to create alternatives for their important decisions and the effectiveness of different stimuli for improving this ability. For decisions for which the full set of potentially desirable alternatives is not readily apparent, our first study indicates that decision makers identify less than half of the...
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作者：Chao, Xiuli; Gong, Xiting; Shi, Cong; Zhang, Huanan
作者单位：University of Michigan System; University of Michigan; Chinese University of Hong Kong
摘要：We develop the first approximation algorithms with worst-case performance guarantees for periodic-review perishable inventory systems with general product lifetime, for both backlogging and lost-sales models. The demand process can be nonstationary and correlated over time, capturing such features as demand seasonality and forecast updates. The optimal control policy for such systems is notoriously complicated, thus finding effective heuristic policies is of practical importance. In this paper...
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作者：Prekopa, Andras; Unuvar, Merve
作者单位：Rutgers University System; Rutgers University New Brunswick; International Business Machines (IBM); IBM USA
摘要：Single commodity networks are considered, where demands at the nodes are random. The problem is to find minimum cost optimal built in capacities at the nodes and arcs subject to the constraint that all demands should be met on a prescribed probability level (reliability constraint) and some deterministic constraints should be satisfied. The reliability constraint is formulated in terms of the Gale-Hoffman feasibility inequalities, but their number is reduced by elimination technique. The conce...
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作者：Luo, Wei; Shang, Kevin
作者单位：University of Navarra; IESE Business School; Duke University
摘要：This paper develops a centralized supply chain model that integrates material flows with cash flows. The supply chain is owned by a single firm with two divisions. The downstream division (headquarters), facing random customer demand, replenishes materials from the upstream division. The firm installs a financial services platform that pools the divisions' cash into a master account managed by the headquarters. In each period, cash is received from customers and paid to the outside vendor afte...
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作者：Kohli, Rajeev; Jedidi, Kamel
作者单位：Columbia University
摘要：Elimination by aspects (EBA) is a random utility model that is considered to represent the choice process used by consumers more faithfully than logit and probit models. One limitation of the model is that it does not have a known error theory. We show that EBA can be derived by assuming that aspects have random utilities with independent, extreme value distributions. Multinomial logit and rank-ordered logit models are special cases of EBA.
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作者：Pinker, Edieal J.
作者单位：Yale University
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作者：Shang, Kevin H.; Tao, Zhijie; Zhou, Sean X.
作者单位：Duke University; Shanghai University of Finance & Economics; Chinese University of Hong Kong
摘要：We consider a periodic-review inventory system in which N non-identical retailers replenish from a warehouse, which further replenishes from an outside vendor with ample supply. Each facility faces Poisson demand and replenishes according to a base-stock policy in a fixed time interval. Fixed costs are incurred for placing an order. The warehouse fills the retailers' orders in the same sequence as the occurrence of the demand at the retailers. The objective is to minimize the average system co...
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作者：Tsetlin, Ilia; Winkler, Robert L.; Huang, Rachel J.; Tzeng, Larry Y.
作者单位：INSEAD Business School; Duke University; National Central University; National Taiwan University
摘要：Almost stochastic dominance allows small violations of stochastic dominance rules to avoid situations where most decision makers prefer one alternative to another but stochastic dominance cannot rank them. While the idea behind almost stochastic dominance is quite promising, it has not caught on in practice. Implementation issues and inconsistencies between integral conditions and their associated utility classes contribute to this situation. We develop generalized almost second-degree stochas...
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作者：Abbas, Ali E.; Bell, David E.
作者单位：University of Southern California; University of Southern California; Harvard University
摘要：We study the problem of finding ordinal utility functions to rank the outcomes of a decision when preference independence between the attributes is not present. We propose that the next level of complexity is to assume that preferences over one attribute can switch at most once as another attribute varies from low to high. We refer to this property as ordinal one-switch independence. We present both necessary and sufficient conditions for this ordinal property to hold and provide families of f...
