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SCI: A Metacognitive Control for Signal Dynamics

arXiv.org Artificial Intelligence

Modern deep learning systems are typically deployed as open-loop function approximators: they map inputs to outputs in a single pass, without regulating how much computation or explanatory effort is spent on a given case. In safety-critical settings, this is brittle: easy and ambiguous inputs receive identical processing, and uncertainty is only read off retrospectively from raw probabilities. We introduce the Surgical Cognitive Interpreter (SCI), a lightweight closed-loop metacognitive control layer that wraps an existing stochastic model and turns prediction into an iterative process. SCI monitors a scalar interpretive state SP(t), here instantiated as a normalized entropy-based confidence signal, and adaptively decides whether to stop, continue sampling, or abstain. The goal is not to improve accuracy per se, but to regulate interpretive error ΔSP and expose a safety signal that tracks when the underlying model is likely to fail. We instantiate SCI around Monte Carlo dropout classifiers in three domains: vision (MNIST digits), medical time series (MIT-BIH arrhythmia), and industrial condition monitoring (rolling-element bearings). In all cases, the controller allocates more inference steps to misclassified inputs than to correct ones (up to about 3-4x on MNIST and bearings, and 1.4x on MIT-BIH). The resulting ΔSP acts as a usable safety signal for detecting misclassifications (AUROC 0.63 on MNIST, 0.70 on MIT-BIH, 0.86 on bearings). Code and reproducibility: https://github.com/vishal-1344/sci


How cutting-edge AI technology is improving surgical precision

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Artificial intelligence (AI) is improving surgical planning, guidance and review, says Paul Mussenden, Chief Executive Officer, Cydar Medical. It's operating in all areas of healthcare and helping join up the different stages of the care pathway. That's because AI is very good at rationalising lots of complex data in a broad range of areas such as imaging data, diagnostic data, clinical data and genetic data -- and using it to personalise healthcare for individual patients. It gives clinicians the best information and new insights to make better decisions. Over the last 15 years, there has been a big shift to minimally invasive procedures.