arXiv Computation and Language By Jiwan Chung, Heechan Choi, Seon Joo Kim

Rethinking State Tracking in Recurrent Models Through Error Control Dynamics

Read the original on arXiv Computation and Language →

The paper argues that error control is as crucial as expressive capacity for state tracking in recurrent models. It proves that affine recurrent networks, including State‑Space Models and Linear Attention, cannot correct errors along state‑separating subspaces once they preserve state representations, leading to finite‑horizon solutions governed by accumulated error. Empirical results on group state‑tracking tasks show that tracking collapses when the distinguishability ratio falls below a readability threshold, and this crossing predicts downstream accuracy failure.

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