Checklist ROAI 2026 Local Stage · Task 1
Soil Quality Prediction
English title: Predicția calității solului
Compute simple soil indicators and classify agricultural fields as Favorable or Unfavorable for a sensitive crop.
The task
An experimental farm measures physico-chemical soil properties (pH, moisture, nitrogen, phosphorus, potassium, organic matter, conductivity, density, clay percentage) and descriptive information (soil type, region, irrigation, temperature, rainfall, sunlight, slope) for its fields; some fields were labelled Favorable or Unfavorable for a sensitive crop.
For each test field the contestant computes Nutrient_Index = 0.4·Nitrogen + 0.3·Phosphorus + 0.3·Potassium (subtask 1), a pH class Acid/Neutral/Alkaline (subtask 2), whether Moisture exceeds the training median (subtask 3, missing values set to the median) and the number of training fields with the same Soil_Type (subtask 4), and predicts Suitability (subtask 5).
Abridged by SOTA from the official materials. The official statement has the exact rules, and it wins wherever this summary differs.
At a glance
- You get
train_data.csv(with Suitability) andtest_data.csv.- You submit
- CSV with subtaskID (1–5), datapointID (test ID) and answer; every test ID needs an answer for each subtask.
- Scoring
- Subtasks 1–4 (10 points each): correctness of answers. Subtask 5 (60 points): F1 for the Unfavorable class (
pos_label='Unfavorable'); full marks at F1 ≥ 0.785. - Rules
- Online, open to middle- and high-school students in Romania; one common round for all sections
- Only concepts from the 2026 syllabus are needed; an installable contest environment (
setup.zip) is offered - Only the packages listed in the round rules may be used; the final submission must be selected for each problem
- Participants scoring more than 20% qualify for the county stage
- Format
- ROAI 2026 local stage, online window 31 January – 15 February 2026.