Stable matching of student-groups to dormitories

Nitsan Perach*, Shoshana Anily

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


This paper generalizes results of former papers on the assignment of students to dormitories, under an entrance criterion, by allowing students to apply in groups. A group-application means that its applicants ask to be assigned to the same dormitory, and otherwise they prefer living off-campus. The underlying assumption in our model is that the dormitories share a common preference over the student-groups, which is given by a strictly increasing ranking of their credit scores. The definition of a quasi-stable outcome is adjusted in order to incorporate student-group applications, and we prove that such an outcome always exists. Furthermore, a polynomial-time algorithm that finds all the quasi-stable outcomes is proposed. Apparently, not all properties of the single students’ model continue to hold under group-applications. Finally, we consider the incentive compatibility property of the proposed algorithm, and describe a specific quasi-stable outcome for which no subset of student-groups can gain by misrepresenting their preferences over the dormitories.

Original languageEnglish
Pages (from-to)50-61
Number of pages12
JournalEuropean Journal of Operational Research
Issue number1
StatePublished - 1 Oct 2022


FundersFunder number
Coller Foundation
Henry Crown Israeli Institute for Business Research
Israel Science Foundation338/15, 1489/19
Technion-Israel Institute of Technology


    • Assignment
    • Dormitories
    • Incentive compatibility
    • Many-to-many matching
    • Stable matching


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