Detection vs. Execution: Single-Bucket Probes Miss Half the Mamba-2 State Sink
Researchers have identified a significant limitation in how Mamba-2's internal workings are understood. They found that standard probing techniques, which aim to link representational signatures to computational execution, only capture a fraction of the model's 'state sink' mechanism. A larger, 'detection layer' with similar representational patterns was missed by these single-bucket probes, highlighting a gap between representational similarity and actual functional execution in the model. AI
IMPACT Reveals limitations in current interpretability methods for state-space models, potentially impacting how future models are analyzed and understood.