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作者：Reed, Josh; Zwart, Bert
作者单位：New York University
摘要：Bandwidth-sharing networks provide a natural modeling framework for describing the dynamic flow-level interaction among elastic data transfers in computer and communication systems, and can be used to develop traffic pricing/charging mechanisms. At the same time, such models are exciting from an operations research perspective because their analysis requires techniques from stochastic modeling and optimization. In this paper, we develop a framework to approximate bandwidth-sharing networks und...
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作者：Glasserman, Paul; Kang, Wanmo
作者单位：Columbia University; Korea Advanced Institute of Science & Technology (KAIST)
摘要：Banking regulations set minimum levels of capital for banks. These requirements are generally formulated through a ratio of capital to risk-weighted assets. A risk-weighting scheme assigns a weight to each asset or category of assets and effectively functions as a linear constraint on a bank's portfolio choice; it also changes the incentives for banks to hold various kinds of assets. In this paper, we investigate the design of risk weights to align regulatory and private objectives in a simple...
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作者：Helm, Jonathan E.; Van Oyen, Mark P.
作者单位：Indiana University System; IU Kelley School of Business; Indiana University Bloomington; University of Michigan System; University of Michigan
摘要：Hospitals typically lack effective enterprise level strategic planning of bed and care resources, contributing to bed census levels that are statistically out of control. This system dysfunction manifests itself in bed block, surgical cancelation, ambulance diversions, and operational chaos. This is the classic hospital admission scheduling and control (HASC) problem, which has been addressed in its entirety only through inexact simulation-based search heuristics. This paper develops new analy...
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作者：Hernandez, Penelope; von Stengel, Bernhard
作者单位：University of Valencia; University of Valencia; University of London; London School Economics & Political Science
摘要：This paper studies the stability of communication protocols that deal with transmission errors. We consider a coordination game between an informed sender and an uninformed receiver, who communicate over a noisy channel. The sender's strategy, called a code, maps states of nature to signals. The receiver's best response is to decode the received channel output as the state with highest expected receiver payoff. Given this decoding, an equilibrium or Nash code results if the sender encodes ever...
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作者：Brown, David B.; Smith, James E.
作者单位：Duke University
摘要：We consider the information relaxation approach for calculating performance bounds for stochastic dynamic programs (DPs). This approach generates performance bounds by solving problems with relaxed nonanticipativity constraints and a penalty that punishes violations of these nonanticipativity constraints. In this paper, we study DPs that have a convex structure and consider gradient penalties that are based on first-order linear approximations of approximate value functions. When used with per...
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作者：Chen, Hong; Zhang, Zhan
作者单位：Shanghai Jiao Tong University; University of British Columbia
摘要：This paper analyzes a periodic-review, joint inventory and pricing control problem for a firm that faces stochastic, price-sensitive demand under a nonstationary environment with fixed ordering costs. Any unsatisfied demand is backlogged. The objective is to maximize expected profit over a finite selling horizon by coordinating the inventory and pricing decisions in each period. We show that for an additive demand model, an (s, S, p) policy is optimal when the expected revenue is quasi-concave...
