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Illustration by IOAI Training
🌍 IOAI 2025, Individual Day 2
Antique Painting Authentication
Classify paintings as authentic or replica from five numeric features when most training samples are unlabelled.
- Statement
- English · Original statement ↗
- To hand in
- A predictions file
- Hardware
- A laptop is enough (CPU)
- Data size
- 0.15 MB
- Data type
- 📊 Tables
- Estimated difficulty
- ★★★☆☆
- Solution
- See a solution · best opened after you have tried
Arena
Download the official data and submit your predictions: our server scores them with the problem's metric and ranks you on the leaderboard.
0
players
0
submissions
·
best score
90.0 %
to solve it
1Download the data
- training_set.csv500 paintings: 5 features and the Authenticated label (1 authentic, -1 replica, 0 unknown)
- test_set.csv500 paintings to classify (5 features, no label)
Official data : CC-BY-4.0, IOAI 2025
2Submit your predictions
- Expected format
- A 500-line CSV file: one prediction per line (1 = authentic, -1 = replica), in the order of test_set.csv. A header line is accepted.
- Metric
- Accuracy: the share of the 500 paintings classified correctly, as at the IOAI.
Leaderboard
Get ready on the platform
The chapters of the learning path that prepare for this problem.
These chapters are picked from the solution: showing them may hint at the approach.
›How to tackle it
- Read the statement. What to hand in, the metric that scores you, the time and hardware limits.
- Explore the data. Size, format, missing values, how the labels are spread.
- Score yourself first. Keep part of the training data aside to measure your work before submitting.
- Start simple, then improve. A first solution that works end to end, then one change at a time.
- Compare with a solution. Once you have searched, open it and see what you would have done differently.
The statement, data and solutions belong to their authors; we only link to them. Licence : CC-BY-4.0.
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