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A queueing model for crowdsourcing

Author

Listed:
  • Srinivas R. Chakravarthy

    (Kettering University)

  • Alexander N. Dudin

    (Belarussian State University)

Abstract

Crowdsourcing is getting popular after a number of industries such as food, consumer products, hotels, electronics, and other large retailers bought into this idea of serving customers. In this paper, we introduce a multi-server queueing model in the context of crowdsourcing. We assume that two types, say, Type 1 and Type 2, of customers arrive to a c-server queueing system. A Type 1 customer has to receive service by one of c servers while a Type 2 customer may be served by a Type 1 customer who is available to act as a server soon after getting a service or by one of c servers. We assume that a Type 1 customer will be available for serving a Type 2 customer (provided there is at least one Type 2 customer waiting in the queue at the time of the service completion of that Type 1 customer) with probability $$p, 0 \le p \le 1$$ p , 0 ≤ p ≤ 1 . With probability $$q = 1 - p$$ q = 1 - p , a Type 1 customer will opt out of serving a Type 2 customer provided there is at least one Type 2 customer waiting in the system. Upon completion of a service a free server will offer service to a Type 1 customer on an FCFS basis; however, if there are no Type 1 customers waiting in the system, the server will serve a Type 2 customer if there is one present in the queue. If a Type 1 customer decides to serve a Type 2 customer, for our analysis purposes that Type 2 customer will be removed from the system as Type 1 customer will leave the system with that Type 2 customer. Under the assumption of exponential services for both types of customers we study the model in steady state using matrix analytic methods and establish some results including explicit ones for the waiting time distributions. Some illustrative numerical examples are presented.

Suggested Citation

  • Srinivas R. Chakravarthy & Alexander N. Dudin, 2017. "A queueing model for crowdsourcing," Journal of the Operational Research Society, Palgrave Macmillan;The OR Society, vol. 68(3), pages 221-236, March.
  • Handle: RePEc:pal:jorsoc:v:68:y:2017:i:3:d:10.1057_s41274-016-0099-x
    DOI: 10.1057/s41274-016-0099-x
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    Cited by:

    1. Srinivas R. Chakravarthy & Alexander N. Dudin & Sergey A. Dudin & Olga S. Dudina, 2023. "Queueing System with Potential for Recruiting Secondary Servers," Mathematics, MDPI, vol. 11(3), pages 1-24, January.

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