Adjusted Winner: from Splitting to Selling

Fuente: arXiv
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Autores principales: Bredereck, Robert, Sun, Bin, Briman, Eyal, Talmon, Nimrod
Formato: Preprint
Publicado: 2026
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author Bredereck, Robert
Sun, Bin
Briman, Eyal
Talmon, Nimrod
author_facet Bredereck, Robert
Sun, Bin
Briman, Eyal
Talmon, Nimrod
contents The Adjusted Winner (AW) method is a fundamental procedure for the fair division of indivisible resources between two agents. However, its reliance on splitting resources can lead to practical complications. To address this limitation, we propose an extension of AW that allows the sale of selected resources under a budget constraint, with the proceeds subsequently redistributed, thereby aiming for allocations that remain as equitable as possible. Alongside developing this extended framework, we provide an axiomatic analysis that examines how equitability and envy-freeness are modified in our setting. We then formally define the resulting combinatorial problems, establish their computational complexity, and design a fully polynomial-time approximation scheme (FPTAS) to mitigate their inherent intractability. Finally, we complement our theoretical results with computer-based simulations.
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id arxiv_https___arxiv_org_abs_2602_12231
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Adjusted Winner: from Splitting to Selling
Bredereck, Robert
Sun, Bin
Briman, Eyal
Talmon, Nimrod
Computer Science and Game Theory
The Adjusted Winner (AW) method is a fundamental procedure for the fair division of indivisible resources between two agents. However, its reliance on splitting resources can lead to practical complications. To address this limitation, we propose an extension of AW that allows the sale of selected resources under a budget constraint, with the proceeds subsequently redistributed, thereby aiming for allocations that remain as equitable as possible. Alongside developing this extended framework, we provide an axiomatic analysis that examines how equitability and envy-freeness are modified in our setting. We then formally define the resulting combinatorial problems, establish their computational complexity, and design a fully polynomial-time approximation scheme (FPTAS) to mitigate their inherent intractability. Finally, we complement our theoretical results with computer-based simulations.
title Adjusted Winner: from Splitting to Selling
topic Computer Science and Game Theory
url https://arxiv.org/abs/2602.12231