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Stability of the stochastic matching model

Published online by Cambridge University Press:  09 December 2016

Jean Mairesse*
Affiliation:
CNRS and UPMC
Pascal Moyal*
Affiliation:
Université de Technologie de Compiègne and Northwestern University
*
* Postal address: Sorbonne Universités, UPMC Univ Paris 06, CNRS, LIP6, 4 place Jussieu, 75252 Paris Cedex 05, France.
** Postal address: LMAC, Université de Technologie de Compiègne, 60203 Compiègne Cedex, France. Email address: pascal.moyal@utc.fr

Abstract

We introduce and study a new model that we call the matching model. Items arrive one by one in a buffer and depart from it as soon as possible but by pairs. The items of a departing pair are said to be matched. There is a finite set of classes 𝒱 for the items, and the allowed matchings depend on the classes, according to a matching graph on 𝒱. Upon arrival, an item may find several possible matches in the buffer. This indeterminacy is resolved by a matching policy. When the sequence of classes of the arriving items is independent and identically distributed, the sequence of buffer-content is a Markov chain, whose stability is investigated. In particular, we prove that the model may be stable if and only if the matching graph is nonbipartite.

Type
Research Papers
Copyright
Copyright © Applied Probability Trust 2016 

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