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Why 98% accuracy in human activity recognition might not mean what you think

I've been looking into how machine-learning models are evaluated for radar-based human activity recognition (HAR), and one issue that deserves more attention is how datasets are split. Consider a simple example. Suppose we have continuous radar recordings divided into: Window length: 4 seconds Wind…

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  1. 2026-10-28 15:25 · r/learnmachinelearning
    Why 98% accuracy in human activity recognition might not mean what you think

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