| Keep your dataset small and focused. | |
| ### Pretrain (`corpus_raw.txt`) | |
| Short concept notes you wrote yourself (or public domain). Aim 0.5–5 MB: | |
| - definitions (inertia, momentum, energy…) | |
| - short derivations (one paragraph) | |
| - worked mini examples (1–3 lines) | |
| ### SFT (`sft_train.jsonl`) | |
| Each line: {"instruction": "...", "output": "..."} | |
| Keep answers short and factual. 200–1000 examples is fine. | |
| **Do not include copyrighted textbook dumps.** | |