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  • 标题:Asynchronous Optimization over Weakly Coupled Renewal Systems
  • 本地全文:下载
  • 作者:Xiaohan Wei ; Michael J. Neely
  • 期刊名称:Stochastic Systems
  • 印刷版ISSN:1946-5238
  • 出版年度:2018
  • 卷号:8
  • 期号:3
  • 页码:167-191
  • DOI:10.1287/stsy.2018.0013
  • 语种:English
  • 出版社:Institute for Operations Research and the Management Sciences (INFORMS), Applied Probability Society
  • 摘要:This paper considers optimization over multiple renewal systems coupled by time-average constraints. These systems act asynchronously over variable length frames. When a particular system starts a new renewal frame, it chooses an action from a set of options for that frame. The action determines the duration of the frame, the penalty incurred during the frame (such as energy expenditure), and a vector of performance metrics (such as instantaneous number of job services). The goal is to minimize the time-average penalty subject to time-average overall constraints on the corresponding metrics. This problem has applications to task processing networks and coupled Markov decision processes. We propose a new algorithm so that each system can make its own decision after observing a global multiplier that is updated every slot. We show that this algorithm satisfies the desired constraints and achieves O(ε) near optimality with O(1/ε2) convergence time.
  • 关键词:stochastic programming; fractional programming; Markov decision processes; renewal processes
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