MesaNet: Sequence Modeling by Locally Optimal Test-Time Training - von Oswald, Johannes; Scherrer, Nino; Kobayashi, Seijin; Versari, Luca; Yang, Songlin; Schlegel, Maximilian; Maile, Kaitlin; Schimpf, Yanick; Sieberling, Oliver; Meulemans, Alexander; Lajoie, Guillaume; A. Saurous, Rif; et al. (International Conference on Learning Representations, 2026)