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Erel Segal-Halevi

8 accepted papers

2025

Reducing Leximin Fairness to Utilitarian Optimization

AAAI 2025technical

Two prominent objectives in social choice are utilitarian - maximizing the sum of agents' utilities, and leximin - maximizing the smallest agent's utility, then the second-smallest, etc. Utilitarianism is typically computationally easier to attain but is generally viewed as less fair. This paper pr…

Cited by 0SourcePDFScholar
2023

Ordinal Maximin Share Approximation for Goods (Extended Abstract)

IJCAI 2023poster

In fair division of indivisible goods, l-out-of-d maximin share (MMS) is the value that an agent can guarantee by partitioning the goods into d bundles and choosing the l least preferred bundles. Most existing works aim to guarantee to all agents a constant fraction of their 1-out-of-n MMS. But this…

Cited by 0SourcePDFScholar
2022

Weighted Fairness Notions for Indivisible Items Revisited

AAAI 2022technical

We revisit the setting of fairly allocating indivisible items when agents have different weights representing their entitlements. First, we propose a parameterized family of relaxations for weighted envy-freeness and the same for weighted proportionality; the parameters indicate whether smaller-weig…