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🇧🇬 Bulgaria NCAI 2026, National Competition in AI, final (in-person) round

Training-Free Statistical Defect Localisation in Latent Space

✍️ Solved by us

Without any training, flag and localise product defects from precomputed patch embeddings while staying robust to a distribution shift between two regimes.

To hand in
A Python function
Data type
🖼️ Images
Estimated difficulty
★★★★☆
Correction
Our worked correction · best opened after you have tried

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›How to tackle it
  1. Read the statement. What to hand in, the metric that scores you, the time and hardware limits.
  2. Explore the data. Size, format, missing values, how the labels are spread.
  3. Score yourself first. Keep part of the training data aside to measure your work before submitting.
  4. Start simple, then improve. A first solution that works end to end, then one change at a time.
  5. Compare with a solution. Once you have searched, open it and see what you would have done differently.

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