Limits of Keras EarlyStopping Verbosity on Console Noise and Warning Visibility
Goal: silence the per‑epoch messages produced by Keras callbacks during model.fit while preserving the ability to be notified of serious training anomalies such as NaN metric values or checkpoint write failures. Constraint: setting verbose=0 on callbacks like EarlyStopping, ModelCheckpoint, or CSVLogger removes all stdout output from those callbacks, but it
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