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    政大機構典藏 > 理學院 > 應用數學系 > 期刊論文 >  Item 140.119/72877
    Please use this identifier to cite or link to this item: http://nccur.lib.nccu.edu.tw/handle/140.119/72877


    Title: Threshold control policies for heterogeneous server systems
    Authors: Luh, Hsing Paul;Viniotis, Ioannis
    陸行
    Contributors: 應數系
    Keywords: Queueing;Linear Programming;Dynamic Programming;Markov Processes
    Date: 2002-03
    Issue Date: 2015-01-14 15:55:19 (UTC+8)
    Abstract: We study the problem of optimally controlling a multiserver queueing system. Customers arrive in a Poisson fashion and join a single queue, served by N servers, S1,S2,... , SN. The servers have different rates. The service times at each server are independent and exponentially distributed. The objective is to determine the policy which minimizes the average number of customers in the system. We show that any optimal, nonpreemptive policy is of threshold type, i.e., it assigns a customer to server Si, if this server is the fastest server available and the number of customers in the queue is mi or more. The threshold mi may depend on the condition of other (slower) servers at the decision instant. In order to establish the results, we reformulate the optimal control problem as a linear program and use a novel argument based on the structure of the constraint matrix.
    Relation: Mathematical Methods of Operations Research, 55(1), 121-142
    Data Type: article
    DOI 連結: http://dx.doi.org/10.1007/s001860100168
    DOI: 10.1007/s001860100168
    Appears in Collections:[應用數學系] 期刊論文

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