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Giannis Tyrovolas

2 accepted papers

2025

Fraud-Proof Revenue Division on Subscription Platforms

ICML 2025poster

We study a model of subscription-based platforms where users pay a fixed fee for unlimited access to content, and creators receive a share of the revenue. Existing approaches to detecting fraud predominantly rely on machine learning methods, engaging in an ongoing arms race with bad actors. We explo…

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2024

Unravelling Expressive Delegations: Complexity and Normative Analysis

AAAI 2024technical

We consider binary group decision-making under a rich model of liquid democracy: agents submit ranked delegation options, where each option may be a function of multiple agents' votes; e.g., "I vote yes if a majority of my friends vote yes." Such ballots are unravelled into a profile of direct votes…

Cited by 2Source ↗PDF ↗Scholar ↗