README.md

---
license: cc-by-4.0
pretty_name: "IOAI 2026 – IOAI Field"
tags:
- ioai
- olympiad
- regression
viewer: false
---

# IOAI 2026 — IOAI Field

Official contest data for **IOAI Field**, task 6 (Day 2) of the [IOAI 2026](https://ioai-official.org) Individual Contest, held in Astana, Kazakhstan.

The IOAI logo is modelled as a spatial function F(x, y, W) over the unit plane. Contestants train a small network **from scratch** (no pretrained weights, ≤ 20,260 parameters) to reproduce the field; the grader overlays hidden leaderboard configurations onto the training config and retrains the submitted notebook.

The task statement, translations, baseline and grader live in the [IOAI-2026 GitHub repository](https://github.com/IOAI-official/IOAI-2026/tree/main/Individual-Contest/6_IOAI_Field). This repository holds **data only** and is **not published**.

## Subsets

| Subset | Path | Contestants saw it | Role |
|---|---|---|---|
| Public – train | `public/train_config/`, `public/train.npz`, `public/test.npz`, `public/meta.json`, `public/preview.png` | yes | the visible field configuration and samples |
| Private – held-out test | `private/test_private.npz` | no | hidden evaluation queries |
| Private – Leaderboard A | `private/leaderboard_a_config/` | no | hidden field config for the **live leaderboard** |
| Private – Leaderboard B | `private/leaderboard_b_config/` | no | hidden field config for the **final ranking** |

## Credits

Proposed by **Evgenii Tsymbalov**; developed by **Evgenii Tsymbalov**, **Ekaterina Fadeeva**, **Daniil Kazantsev**, **Maiya Goloburda** and **Magauiya Zhussip**. Published by the IOAI 2026 Scientific Committee under CC BY 4.0.