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Cengiz Pehlevan

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Jul 2026

A Defense of the Quadratic Model

Due to the complexity of neural network loss landscapes, optimization theory is forced to rely on idealized models, and there is generally a tradeoff between how theoretically tractable the model is, and how accurately it describes the true optimization dynamics. In this work, we stress test the simplest possible model...

Alexandru Meterez, Pranav Ajit Nair, Depen Morwani et al. · 3 citations
#artificial intelligence Preprint Sep 2026

On the Importance of Gating: Memorization vs. In-Context Learning in State Space Models

State Space Models (SSMs) have emerged as a compelling alternative to Transformers, enabling sequence modeling with constant memory and linear compute. Although SSMs exhibit reasonable performance and favorable computational characteristics, they continue to lag behind Transformers on tasks that require in-context lear...

W. Tong, Aryo Lotfi, Emmanuel Abbe et al. · 0 citations

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