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Author

Ermis Soumalias

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#machine learning Preprint Oct 2026

MIRT: Transformers for Truthful Generative Auctions with Whole-feed Permutation Externalities

Modern online platforms commonly rank ads and organic content separately before blending them into a feed displayed to the user, overlooking externalities: an item's click-through rate depends on its surrounding content, not only on its own position. Recent learning-based feed generation mechanisms model some of these...

A. Elahi, Ermis Soumalias, J. Liang et al. · 0 citations
#artificial intelligence Preprint Oct 2026

Incentive Alignment in Online Experimentation

Evaluating the causal effect of new features is a central goal for online platforms. While recent literature addresses limited testing traffic via centralized portfolio optimization, this perspective abstracts away a critical institutional reality: experimentation is operationally decentralized. The experimenters who d...

Ermis Soumalias, R. Mudd, Abbas Zaidi · 0 citations

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