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George Christodoulou

4 accepted papers

2025

Maximin Share Guarantees for Few Agents with Subadditive Valuations

IJCAI 2025

We study the problem of fairly allocating a set of indivisible items among a set of agents. We consider the notion of (approximate) maximin share (MMS) and we provide an improved lower bound of 1/2 (which is tight) for the case of subadditive valuations when the number of agents is at most four. We

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2022

Truthful Aggregation of Budget Proposals with Proportionality Guarantees

AAAI 2022technical

We study a participatory budgeting problem, where a set of strategic agents wish to split a divisible budget among different projects by aggregating their proposals on a single division. Unfortunately, the straightforward rule that divides the budget proportionally is susceptible to manipulation. Re…

Cited by 12Source ↗PDF ↗Scholar ↗