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My Retraining Silently Deleted a Class

This story is from 2026-09-23. It is preserved in the archive; the latest stories are on the live feed.

Nobody touched the code. Nobody changed the model. I just tidied my mailbox. And my classifier lost an entire class, without a single warning. TL;DR : my email triage bot classifies with a TF-IDF model trained on my own folders. A manual re-sort drained the Personnel class from 196 examples to 9. T…

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  1. 2026-09-23 06:03 · DEV Community — Machine Learning
    My Retraining Silently Deleted a Class

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