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Help diagnosing 100% accuracy (Data Leakage) on DeBERTa & 0% (Label Flip) on a Portuguese DeBERTa model

This story is from 2026-09-08. It is preserved in the archive; the latest stories are on the live feed.

I’m classifying scientific abstracts written in Portuguese into two temporal categories: "Old" vs "Recent". I tested several models, but two of them are giving me massive red flags: DeBERTa (base): Getting exactly 100% accuracy on the test set. Albertina (a Portuguese DeBERTa-based model): Getting…

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Timeline · 2 reports

  1. 2026-09-08 00:25 · r/learnmachinelearning
    Help diagnosing 100% accuracy (Data Leakage) on DeBERTa & 0% (Label Flip) on a Portuguese DeBERTa model
  2. 2026-09-08 00:24 · r/LanguageTechnology
    Help diagnosing 100% accuracy (Data Leakage) on DeBERTa & 0% (Label Flip) on a Portuguese DeBERTa model

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