Achieving Balanced Representation in School Choice with Diversity Goals

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Hauptverfasser: Sun, Zhaohong, Yokoo, Makoto
Format: Preprint
Veröffentlicht: 2024
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author Sun, Zhaohong
Yokoo, Makoto
author_facet Sun, Zhaohong
Yokoo, Makoto
contents Student placements under diversity constraints are a common practice globally. This paper addresses the selection of students by a single school under a \emph{one-to-one convention}, where students can belong to multiple types but are counted only once based on one type. While existing algorithms in economics and computer science aim to help schools meet diversity goals and priorities, we demonstrate that these methods can result in significant imbalances among students with different type combinations. To address this issue, we introduce a new property called \emph{balanced representation}, which ensures fair representation across all types and type combinations. We propose a straightforward choice function that uniquely satisfies four fundamental properties: maximal diversity, non-wastefulness, justified envy-freeness, and balanced representation. While previous research has primarily focused on algorithms based on bipartite graphs, we take a different approach by utilizing flow networks. This method provides a more compact formalization of the problem and significantly improves computational efficiency. Additionally, we present efficient algorithms for implementing our choice function within both the bipartite graph and flow network frameworks.
format Preprint
id arxiv_https___arxiv_org_abs_2412_13622
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Achieving Balanced Representation in School Choice with Diversity Goals
Sun, Zhaohong
Yokoo, Makoto
Computer Science and Game Theory
91B68
F.2; I.2
Student placements under diversity constraints are a common practice globally. This paper addresses the selection of students by a single school under a \emph{one-to-one convention}, where students can belong to multiple types but are counted only once based on one type. While existing algorithms in economics and computer science aim to help schools meet diversity goals and priorities, we demonstrate that these methods can result in significant imbalances among students with different type combinations. To address this issue, we introduce a new property called \emph{balanced representation}, which ensures fair representation across all types and type combinations. We propose a straightforward choice function that uniquely satisfies four fundamental properties: maximal diversity, non-wastefulness, justified envy-freeness, and balanced representation. While previous research has primarily focused on algorithms based on bipartite graphs, we take a different approach by utilizing flow networks. This method provides a more compact formalization of the problem and significantly improves computational efficiency. Additionally, we present efficient algorithms for implementing our choice function within both the bipartite graph and flow network frameworks.
title Achieving Balanced Representation in School Choice with Diversity Goals
topic Computer Science and Game Theory
91B68
F.2; I.2
url https://arxiv.org/abs/2412.13622